Patent Application
20200086111
The present disclosure is generally related to systems and methods for implanting probe devices.
Conventional methods to record from and/or stimulate neurological sites are limited by an inability to position and size electrodes such that they are able to precisely record and/or stimulate neurological sites of interest. Additionally, conventional electrodes (and electrode arrays) are unable to achieve reliable and conformal integration with structures in the nervous system. Moreover, conventional electrodes are prone to degradation in the quality of recorded and/or stimulated neurological signals over time.
Without electrodes that are able to record from and/or stimulate neurological sites with precision and over a reliable amount of time, implantable devices for neurological sites that use conventional electrodes have limited use for science and research experiments, neural prostheses (e.g., brain/nerve machine interfaces), and the treatment of neuronal disease (e.g., deep brain stimulation for the treatment of epilepsy).
Conventional approaches to implanting implantable devices having electrodes into neurological tissue suffer from limited depth, limited longevity, limited targeting ability, limitations due to their relatively large size, and limited bandwidth.
In some embodiments, a system for robotically implanting a probe device into biological tissue includes a biocompatible probe, an integrated circuit (IC) chip tethered to the probe, a cartridge comprising a temporary attachment surface by which the probe is removably coupled to the cartridge and a fastener for removably coupling the IC chip to the cartridge, a needle configured to reversibly engage with the probe, a robotic arm configured to hold the needle, a camera, and a microprocessor controller configured to control the robotic arm and the needle using the camera in order to: remove the probe from the temporary attachment surface using the needle, pierce the biological tissue with the needle and the probe, withdraw the needle while leaving the probe within the biological tissue, and detach the IC chip from the cartridge and leave the IC chip with the biological tissue, the IC chip still tethered to the probe.
In some aspects, the probe device assembly may further include multiple probes and IC chips. In some aspects, the fastener comprises one or more of a magnetic attachment or a mechanical attachment.
In some aspects, the temporary attachment surface is formed of one or more of parylene or silicon and the cartridge further comprises an adhesive layer beneath the temporary attachment surface. In some aspects, the system further includes an antenna configured to relay data, electricity, or other signals.
In some aspects, the probe includes an electrode configured to be inserted into biological tissue and a receiving feature mounted on the cartridge for engagement with the needle. In some aspects, the robotic arm is a first robotic arm, and the system further includes a second robotic arm configured to couple with the cartridge.
In some embodiments, a method of implanting a probe device into biological tissue includes (i) providing a cartridge comprising a temporary attachment surface by which the cartridge is removably coupled a biocompatible probe, and a fastener by which the cartridge is removably coupled to an integrated circuit (IC) chip tethered to the probe, (ii) reversibly engaging a needle with the probe, (iii) removing the probe from the temporary attachment surface using the needle, (iv) piercing the biological tissue with the needle and the probe, (v) withdrawing the needle while leaving the probe within the biological tissue, and (vi) detaching the IC chip from the cartridge, leaving the IC chip with the biological tissue, the IC chip still tethered to the probe.
In some aspects, the cartridge has multiple probes and IC chips and the method further includes repeating steps (ii)-(v) for each probe, of the multiple probes. In some aspects, reversibly engaging the needle with the selected receiving feature includes rotating the needle from about 5 degrees to about 180 degrees. In some aspects, the probe is left within the biological tissue at a depth of about one to about three millimeters.
In some embodiments, a cartridge-and-probe-device assembly includes a cartridge comprising a first fastener, a second fastener configured to removably couple the cartridge to a robotic arm, and a temporary attachment surface; an integrated circuit (IC) chip removably coupled to the cartridge via the first fastener; and a biocompatible probe tethered to the IC chip and removably coupled to the temporary attachment surface of the cartridge, wherein the probe includes an electrode configured to be inserted into biological tissue.
In some aspects, the cartridge-and-probe-device assembly further includes a communications port arranged to be exposed outside of the biological tissue and configured to relay data, electricity, or other signals. Alternatively, or additionally, in some aspects, the cartridge-and-probe-device assembly further includes an antenna configured to relay data, electricity, or other signals.
In some aspects, the first fastener includes one or more of a magnetic attachment or a mechanical attachment. In some aspects, the second fastener includes one or more of a magnetic attachment or a mechanical attachment.
In some aspects, the cartridge-and-probe-device assembly further includes multiple probes and IC chips, and a projection edge on the cartridge, configured to mount the multiple probes in a position to be engaged with by a needle for implantation.
In some aspects, cartridge-and-probe-device assembly includes four integrated circuit chips and a storage package structure comprising four chip-compartments, each chip-compartment holding a respective IC chip. In some aspects, the temporary attachment surface is formed of one or more of parylene or silicon; and the cartridge further includes an adhesive layer between the temporary attachment surface and the cartridge. In some aspects, the probe has a thickness in a range of from about 2 micrometers (μm) to about 50 μm.
Illustrative aspects of the present disclosure are described in detail below with reference to the following drawing figures. It is intended that that embodiments and figures disclosed herein are to be considered illustrative rather than restrictive.
The present disclosure relates to systems and methods for implanting implantable devices (also referred to herein as “probe device assemblies” or “probe devices”) having electrodes that are configured to record and/or stimulate biological tissue. In some embodiments, biological tissue can include neurological tissue (also referred to as “brain tissue”). “Implanting a probe device” may refer to implanting at least a portion of a probe device into tissue. Alternatively, or additionally, implanting a probe device may include disposing a portion of a probe device on, or in proximity to, tissue.
As noted above, conventional approaches to implanting probe devices into neurological tissue suffer from several limitations. Conventional brain implants with electrodes tend to have a limited depth of penetration. Such implants also tend to have a limited longevity or limited functional lifespan, in part because presently existing neural probes are engineered to be stiff enough to penetrate the brain, but evidence suggests that this stiffness along with subsequent mechanical impedance mismatch (i.e., the brain is relatively soft) leads to chronic micro-motion, which in turn leads to scarring and loss of recording and stimulating ability of the electrode. Further, such implants have limited targeting ability. In some prior systems, probe devices are fabricated in rigid two-dimensional (2D) arrays, which cannot be arranged with sufficient flexibility to, for example, be targeted to avoid blood vessels. The limited targeting ability also means that the electrodes as part of conventional structures or 2D arrays cannot can be targeted or placed at dynamically selected or arbitrarily selected positions throughout the brain. Moreover, such implants are limited due to their relatively large size, as compared to the tissue they are stimulating and/or recording. Such large implants can elicit immune and foreign-body responses. Further, such implants have a limited bandwidth in that prior technologies used in such applications can record or modulate only a small fraction of neurons. Further, in some prior systems, probes are implanted using stiffeners, which is a slow process.
Techniques described herein address these issues. Micron-scale probes may be implemented to address the problems associated with insertion of larger probe devices. Specialized systems can manipulate, aim, and implant these small probes, as it would be difficult to impossible to implant such micron-scale probes manually. Further, the probes are coupled to storage package structures which can be disposed on or near the implantation area. The storage package structures may serve to store and protect one or more integrated circuit (IC) chips. The integrated circuit chips may serve to collect and analyze data gathered from the probes. The probes and storage package structure collectively form a probe device assembly. Such a probe device assembly may include thousands of channels, which can be implanted to targeted regions of tissue to obtain high-bandwidth streams of information from the tissue.
The disclosed probe device can include electrodes with improved depth penetration that are able to penetrate approximately below the surface of the cortex. Example electrodes can include those discussed in U.S. Provisional Application No. 62/731,496 entitled “E
Other approaches to implementing a needle for implanting a probe device can be found in PCT/US2015/066879 entitled “M
As should be appreciated from the present disclosure and the disclosures referenced above, a probe device that overcomes the limitations of conventional approaches to implanting probe devices will have extremely small and fine electrodes. In some embodiments, an array of such electrodes will be connected as part of an overall probe device, where the electrodes are connected to each other and connected to a central module of the implant with similarly small and fine filament-like connections. In some such aspects, the probe device can be considered like a mesh, with electrodes extending out as terminal points of the implant, arranged and configured to send and receive signals. In some aspects, the probe device with such a plurality of terminal electrodes covering the brain can be understood as akin to a multiplexer, having multiple inputs and directing signal individually or in aggregate through an output signal. Of course, the probe device can also be configured to deliver signals through the plurality of electrodes, effectively operating in the opposite direction of current or data.
As should be further appreciated, the probe device assembly may include a storage package structure holding circuitry, which can have variable shapes and sizes, and can be configured to remain in vivo within a subject along with the probe device following surgery. The storage package structure can be, for example, disposed within a portion of the skull of an animal that has been shaved or carved out to accommodate the storage package structure. The probe device assembly can further include a communications relay to transmit and receive signals to and from the probe device. In some aspects, the probe device assembly can further include a port that extends through the skull and is exposed though the skin of the subject, providing an external access point outside of the biological tissue, where the port can relay data, electricity, or other signals. In other aspects, the probe device assembly can further include a wireless communications port, including an antenna configured to transmit on radio frequencies, Wi-Fi frequencies, or the like, in order to relay data, electricity (e.g. for charging the probe device), or other signals.
Many of the details, dimensions, angles and other features shown in the Figures are merely illustrative of particular embodiments. Accordingly, other embodiments can include other details, dimensions, angles and features without departing from the spirit or scope of the present invention. Various embodiments of the present technology can also include structures other than those shown in the Figures and are expressly not limited to the structures shown in the Figures. Moreover, the various elements and features shown in the Figures may not be drawn to scale. In the Figures, identical reference numbers identify identical or at least generally similar elements.
As used herein, the singular forms “a”, “an”, and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “includes” and/or “including”, when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
Spatially relative terms, such as “beneath”, “below”, “lower”, “above”, “upper”, and the like, may be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as “below” or “beneath” other elements or features would then be oriented “above” the other elements or features. Thus, term such as “below” can encompass both an orientation of above and below, depending on the context of its use. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein are interpreted accordingly.
Although the terms “first”, “second”, etc. may be used herein to describe various elements, components, regions, layers and/or sections, it should be understood that they should not be limited by these terms. These terms are used only to distinguish one element, component, region, layer, or section from another region, layer, or section. Thus, a first element, component, region, layer, or section discussed below could be termed a second element, component, region, layer, or section without departing from the teachings of the present invention.
As used herein, the terms “and/or” and “at least one of” include any and all combinations of one or more of the associated listed items.
As used herein, the terms “approximately” and “about” are used to provide flexibility to a numerical range endpoint by providing that a given value may be within a functional range greater than or less than the given value. As used herein, unless otherwise specified, the given value modified by approximately or about is modified by ±10%.
The inserter head 102 includes components for implanting a probe device in biological tissue, and is described in further detail below with respect to
The cleaner 106 may include functionality for cleaning components of system 100. Cleaner 106 may, for example, be an ultrasonic cleaner. Cleaner 106 may be configured to sterilize a needle after insertion and retraction of the needle. Cleaner 106 may facilitate rapidly and automatically sterilizing the needle, which in turn facilitates successful and rapid insertion of probe devices.
Needle assembly 210 may include a needle 220 and pincher 222 movably attached to a substrate disposed on insertion arm 230. Needle assembly 210 may be small (e.g. on the millimeter scale). Needle assembly 210 may be configured to be quickly and easily installed or replaced on insertion arm 230.
Needle 220 may be configured for inserting portions of probe devices into tissue. Needle 220 may be composed of one or more materials such as tungsten, rhenium, iridium, or carbon. As a specific example, needle 220 may be composed of a tungsten-rhenium wire. Needle 220 may be milled from and/or electrochemically etched to achieve a small diameter, e.g., 24 μm, and/or 20-50 μm. In some embodiments, needle 220 may be less than 20 μm, or more than 50 μm in diameter. Needle 220 may include a cannula to facilitate implantation of probe devices.
Pincher 222 may be configured to guide probe devices for insertion. Pincher 222 may be a wire composed of material such as tungsten. Pincher 222 may be bent (e.g., at an approximately 90 degree angle). Pincher 222 may be approximately 50 μm in diameter (e.g., of comparable scale to needle 220). Pincher 222 may serve to support probe devices in transport, as well as to ensure that probe devices, or portions thereof, are inserted along a path of needle 220. Pincher 220 may be configured to extend and retract in operation. Pincher 220 may be configured to rotate to pinch a probe device, e.g., against needle 220. Needle 220 and pincher 222 are not shown to scale.
In some embodiments, needle assembly 210 may include a “touch-down” sensor (not pictured). The touch-down sensor may be configured to deploy from the needle assembly 210 and sense the presence of the biological tissue along a vertical axis. In some aspects, the touch-down sensor can include a force sensor. In other aspects, the touch-down sensor can include capacitor-based electrical sensor. The touch-down sensor can be deployed from needle assembly 210 and then retracted into needle assembly 210 when the presence of the biological tissue is detected. The touch-down sensor can be beneficial in surgical techniques that are performed on live biological tissue, such as the brain, which can pulse and/or move in the vertical direction during surgery.
Needle assembly 210 may be coupled to insertion arm 230 (also referred to herein as a robotic arm). Insertion arm 230 may be a structure for effecting motion of the needle assembly 210. Insertion arm 230 may include, or be coupled to, a motor for driving motion. The motor may, for example, be a linear motor configured for variable insertion speeds and rapid retraction acceleration. Insertion arm 230 may be coupled to a microprocessor controller and/or computing device for sending instructions to insertion arm 230 for controlling motion of needle assembly 210.
The microprocessor controller may be configured to control motion of one or more of the insertion arm 230, the cartridge arm 320 of
Insertion arm 230 may include pincher actuator 212 for causing motion of the pincher 222 and needle actuator 214 for causing motion of the needle 220. In some embodiments, motion of the insertion arm 230 as a whole corresponds to relatively large-scale motion, while motion of pincher actuator 212 and needle actuator 214 corresponds to fine motions. Pincher actuator 212 and needle actuator 214 may be moved using the same, or different, microprocessor controllers, computing devices, and motors as insertion arm 230.
Motion of inserter head 200 may be controlled using one or more visualization devices, which may include cameras (e.g., targeting cameras 204 and/or insertion camera 206). Images obtained by the visualization devices may be used to determine motion of insertion arm 230.
Targeting cameras 204 and insertion camera 206 may be cameras for capturing a video feed and/or still images. Inserter head 200 may include one or more targeting cameras 204 and/or insertion cameras 206. Targeting cameras 204 may be used to capture images of the area in which an implant is being inserted, which can be used to control the insertion process. Multiple targeting cameras 204 may be used to achieve a stereoscopic effect. In the example shown in
Targeting camera actuators 202 may control motion of targeting cameras 204. Targeting camera actuators 202 may include mechanical components for moving targeting cameras 204, coupled to a microprocessor controller, which may be the same as, or different from, the microprocessor controller that controls motion of insertion arm 230 and/or components thereof. A targeting camera actuator 202 may be coupled to each targeting camera 204. In
Light pipe assemblies 208 may include functionality for illuminating the area in which the implant is to be inserted. In some embodiments, the light pipe assemblies 208 may be configured to generate targeted wavelengths of light to facilitate computer vision techniques, as described in the '520 application.
Cartridge-pillbox assembly 308 (also be referred to herein as a “cartridge-and-probe-device assembly”) includes a cartridge for guiding implantation of one or more probe device assemblies (also referred to as probe devices). The probe device assemblies may include one or more probes coupled to a storage package structure or “pillbox.” The storage package structure may hold electronics such as one or more circuits which are protected (e.g., hermetically sealed) by the storage package structure. The cartridge may be removably attached to the probes and/or storage package structure. “Removably attached” or “removably coupled” may refer to components that are attached and can be detached relatively easily. For example, magnetically attached components, and components snapped together via mechanical attachments that are loosened with a simple motion, are removably attached. Cartridge-pillbox assembly 308, cartridges, and probe device assemblies are described in detail below with respect to
Cartridge arm 320 (also referred to as a robotic arm) may be removably coupled to cartridge-pillbox assembly 308. Cartridge arm 320 may be a structure for effecting motion of the cartridge-pillbox assembly 308. Cartridge arm 320 may include, or be coupled to, a motor for driving motion of cartridge arm 320. Cartridge arm 320 may be coupled to a microprocessor controller and/or computing device for sending instructions to cartridge arm 320 for controlling motion of cartridge-pillbox assembly 308, as described above with respect to
Alternatively, or additionally, in some embodiments, cartridge-pillbox assembly 308 may be detached from the rest of system 100. For example, one or more cartridge-pillbox assemblies 308 may be placed in proximity to inserter head 200 of
If cartridge-pillbox assembly 308 is attached to cartridge arm 320, motion of cartridge arm 320 and attached cartridge-pillbox assembly 308 may be controlled using one or more visualization devices, which may include cameras (e.g., camera stacks 302 and 304). Images obtained by the visualization devices may be used by the microprocessor controller to control motion of cartridge arm 320.
Camera stacks 302 and 304 may include cameras for capturing a video feed and/or still images. Front camera stack 304 and side camera stack 302 may be oriented with respect to one another to obtain front and side views of the target implantation region. Camera stacks 302 and 304 may be used to capture images of the area in which an implant is being inserted, which can be used to control the insertion process. In some embodiments, camera stacks 302 and 304 are fixedly coupled to one another (e.g., with a bracket or clamp). In the example shown in
Light pipe assemblies 306 may include functionality for illuminating the area in which the implant is to be inserted. In some embodiments, the light pipe assemblies 208 may be configured to generate targeted wavelengths of light for use in computer vision techniques.
Camera pan actuation assembly 310 may include mechanical elements for causing panning motion of camera stacks 302 and 304. Camera pan actuator assembly 310 may swivel the cameras horizontally from a fixed position. In some embodiments, camera pan actuator assembly 310 may move the camera stacks 302 and 304 together so both camera stacks 302 and 304 pan in a same direction while maintaining a same orientation with respect to one another. Camera pan actuator assembly 310 may be communicatively coupled to a microprocessor controller and computing device for sending instructions to camera pan actuator assembly 310 to control motion thereof.
Camera focus actuation assembly 312 may include mechanical elements for causing focusing motion of the camera stacks 302 and 304. Camera focus actuator assembly 312 may adjust the distance between the camera stacks 302 and 304 and a target area. Camera focus actuator assembly 312 may move the camera stacks 302 and 304 together so both camera stacks 302 and 304 focus in a same direction while maintaining a same orientation with respect to one another. Alternatively, or additionally, camera focus actuator assembly 312 may include separate fine focus elements for controlling fine focus of side camera stack 302 and front camera stack 304 separately. Camera focus actuator assembly 312 may be communicatively coupled to a microprocessor controller and computing device for sending instructions to camera focus actuator assembly 312 to control motion thereof. Camera pan actuator assembly 310 and camera focus actuator assembly 312 may be controlled by the same, or different, microprocessor controllers and computing devices.
The implantable devices to be implanted using the system 100 of
Probe 421 is a device for implantation into biological tissue. Probe 421 may be a biocompatible probe, e.g., composed of biocompatible material such as polyimide or other polymetric material. Probe 421 may include a wire 408 for insertion into the biological tissue, one or more electrodes 407 disposed on wire 408, and a receiving feature 409.
Wire 408 may be a thin piece of polymer including one or more biocompatible thin film materials. Wire 408 may include conductive material to transmit information. For example, wire 408 may include a gold thin film trace. In some embodiments, the gold thin film trace is encased in polyimide substrate. For example, a thin film layer of polyimide is deposited, then a gold thin film layer is deposited, then another thin film layer of polyimide is deposited, such that the gold thin film layer is sandwiched between the polyimide layers. In some embodiments, wire 408 may include up to three layers of insulation and two layers of conductor. Although a single probe 421 is illustrated in
Electrodes 407 are small pieces of electrically conductive materials. Electrodes 407 may be configured for recording and/or stimulation of biological tissue (e.g., stimulating neurons in the brain and recording neural spikes from the brain). Alternatively, or additionally, wire 408 may be dispersed with other conduits for conducting information such as a wave guide or microfluidic channel. In some embodiments, the electrodes 407 (or other conduits) are spaced by approximately 50 μm, 75 μm, and/or between 25-100 μm. Each probe 421 may include approximately 32 electrodes 407 and/or between 1-100 electrodes or 25-75 electrodes 407. Electrodes 407 may be configured to be inserted into biological tissue (e.g., biocompatible and/or sized to be inserted into biological tissue).
One end of wire 408 may terminate in a receiving feature 409. Receiving feature 409 may be a feature for receiving a needle and/or engagement feature. Examples of receiving features 409 include a loop, hook, or clamp. For example, wire 408 may include a (16×50) μm2 loop to receive an engagement feature of a micron-scale needle.
In some embodiments, probe 421 may have a length from the receiving feature 409 to the chip-compartment portion 413 that is in the range of from about 100 μm to 50 mm. As a specific example, the length of probe 421 is approximately 20 millimeters (mm). In various other aspects, probe 421 can have a length that is less than 100 μm or greater than 50 mm. While only four (4) electrodes 407 are represented in the partial illustration of probe 421 shown in
In some embodiments, probe device assembly 400 may include an antenna 403. Antenna 403 may include functionality for wirelessly transmitting and receiving data. Alternatively, or additionally, a subset of probe device assemblies 400 may include antenna 403. For example, a first probe device assembly may include an antenna, and wired connections to a set of additional probe device assemblies 400, such that the first probe device assembly 400 externally transmits data gathered from the additional probe device assemblies 400.
Probe device assembly 400 may further include one or more chips 405 (also referred to herein as an integrated circuit chip). Chip 405 may be a specially configured integrated circuit (IC) or electrical chip 405. Chip 405 may be communicatively coupled to the electrodes 407 via wire 408. Chip 405 may be connected to at least one antenna 403 configured to wirelessly transmit and receive data and information to and from the chip 405. Accordingly, the chip 405 can be configured to be in electronic communication, informational communication, and/or operational communication with both antenna 403 and electrodes 407.
Chips 405 can be disposed within a storage package structure 423. Storage package structure 423 may also be referred to herein to as an electronics storage package structure or a pillbox. Storage package structure 423 may protect chips 405 and other electronics from moisture and other impurities associated with proximity to biological tissue.
Storage package structure 423 may include one or more chip-compartments 411A, 411B, 411C, and 411D in which chips 405 can be disposed (collectively, chip-compartment portion 413). In some embodiments, a plurality of chips 405 can fit within the chip-compartment portion 413 of the pillbox. As illustrated in
The chip-compartment portion 413 can include pillbox component engagement features 413A. A second portion, a cover 415 of storage package structure 423, can be configured to engage with the chip-compartment portion 413 via pillbox component engagement features 415B. Chip-compartment portion 413 of the pillbox may be mechanically connected to cover 415 of storage package structure 423 by way of the pillbox component engagement features 413A and 415B. Alternatively, or additionally, an adhesive can be applied to affix cover 415 to chip-compartment portion 413. The adhesive may, for example, be epoxy or any other suitable materials. In some embodiments, the adhesive is an electrically isolated, thermally insulated material.
In some embodiments, at least one of the chip-compartment portion 413 or the cover 415 of storage package structure 423 can include a pillbox-head plate engagement feature 419 that is configured to engage the pillbox with a head plate (e.g., head plate 901, shown and described below with respect to
In some embodiments, probe device assembly 400 may include a pillbox-cartridge engagement feature 417 that is located on an outer surface of storage package structure 423. The pillbox-cartridge engagement feature 417 may include magnets and/or mechanical alignment elements configured to removably couple probe device assembly 400 to a cartridge (e.g., the cartridge depicted in
In some embodiments, storage package structure 423 can differ in size, orientation, and shape based on the chip and/or antenna used. In some embodiments, storage package structure 423 can differ in size, orientation, and shape based on the curvature of the brain. In some embodiments, the location of pillbox-head plate engagement feature 419 can vary based on whether the pillbox is configured for implantation on the right or left hemisphere of the brain. For example, pillbox-head plate engagement features 419 can be positioned to mechanically engage (e.g., clip-in) to the head plate along the outer perimeter of the biological tissue.
In some embodiments, storage package structure 423, including chip 405 and/or antenna 403, can form a collection of components of the probe device assembly that are configured to be positioned at or above the surface of the biological tissue when the probe is implanted in biological tissue.
In some implementations of the systems and methods of the present disclosure, the shape and configuration of probe device assemblies 400 is the same for both the left and right sides of a brain. In other implementations, two separate types of probe device assemblies 400 (often mirrored in shape and configuration) are used for the left and right sides of a brain, respectively.
In some embodiments, a portion of probe device assembly 400 may extend beyond the skull and skin of a subject. In some cases, a single probe device assembly 400, or a condensed set of probe device assemblies 400, may be implanted so as to protrude from the skull and skin in a specific area (e.g., so as to appear similar a Mohawk hairstyle). This may be suitable for use in small animals such as a rat, where the space between the brain and the skull is relatively small. Alternatively, smaller probe devices may be placed under the skin of a subject, as described below with respect to
Probes 504 may be substantially similar to probes 421, described above with respect to
Each probe device assembly 500 may include from about 1 to 200 probes 504 or more than 200 probes 504. In particular, a probe device assembly may include 48 or 96 probes 504.
Proximate to the receiving feature, a portion of probe 504 may be deposited on a temporary attachment surface 502 that holds probe 504 in place until probe 504 is peeled off of temporary attachment surface 502 (e.g., using the needle 220 and needle actuator 214 shown above in
A second end of each probe 504 may terminate at a chip in storage package structure 506. Storage package structure 506 may enclose and hermetically seal one or more chips therein. The probes 504 may be bonded or tethered to contacts on the chip. Probes 504, of a given probe device assembly 500, may be connected to a single circuit board. Alternatively, probes 504 may be connected to multiple circuit boards (e.g., one probe 504 per circuit board). In various embodiments, the storage package structure 506 can have a size that is about from 50 μm to 100 mm wide, 50 μm to 100 mm wide in length, and 50 μm to 100 mm wide deep. Probe device assembly 500 may be, relative to the embodiment as shown in
Storage package structure 506 can have a rectangular shape (e.g., as illustrated in
In some embodiments, each probe device assembly 500 can be connected via a cable (e.g., flexible cable or wire) to a connector port. The connector port may extend outside of the body and skin of a subject. In some cases, the connector port is the only portion that is exposed outside of the body or skin. Alternatively, or additionally, the total number of probe device assemblies 500 implanted in a subject, and the related electrodes inserted into the neurological tissue, will be connected to a single communications module having a direct (wired) port or wireless transmission structure. In other words, the chip, container, and array are all completely under the skin, and moreover largely on bone (e.g. placed into a formed recess in the skull) when implanted, with only (in some embodiments) a port breaking the skin to provide for external access to the probe device assembly once implanted. In alternative embodiments, two communications modules could be used (e.g., one for each hemisphere of the brain). In other alternative embodiments, two separate modules implanted in the subject could be used, one for communications and one for power (e.g., for charging the implanted device). Alternatively, or additionally, one or more probe device assemblies may include an antenna for wireless communication. One configuration of multiple probe device assemblies and communication elements is illustrated and described in detail below with respect to
Cartridge 600 may have a generally trapezoidal shape. Alternatively, cartridge 600 may have other shapes such as pyramidal or rectangular, as suitable to accommodate the probe device and/or subject animal of interest. Cartridge 600 may include a projected edge 607. Projected edge 607 may extend from an upper surface 602 of cartridge 600. Projected edge 607 can be configured to align the receiving features (e.g., 409 of
As illustrated in
Cartridge 600 is shown attached to robotic arm 620. One or more side surfaces 605 of the cartridge 600 can include robotic arm engagement features that are configured to attach cartridge 600 to a robotic arm 620 of a surgical robot or the like. In some embodiments, cartridge 600 may include robotic arm engagement features on both side surfaces 605, shown as exposed on one side (unattached to a robotic arm) in
Cartridge 600 may further include a temporary attachment surface for removable attachment of one or more probes. Such a temporary attachment surface is described in further detail below with respect to
In some implementations of the systems and methods of the present disclosure, the shape and configuration of the cartridge used for inserting a probe device into neurological tissue is the same for both the left and right sides of a brain. In other implementations, two separate types of cartridges (often mirrored in shape and configuration) are used for inserting a probe device into neurological tissue is the same for the left and right sides of a brain, respectively.
Cartridge 703 may be substantially similar to cartridge 600, described above with respect to
Storage package structure 701 may be a structure for containing circuitry and/or organizing connections for a set of probes 707. Storage package structure 701 may be similar to storage package structure 423 of
Probes 707 may be wires dispersed with electrodes for implantation into biological tissue, as described above with respect to probes 421
Cartridge 703 may include a projected edge 705 that extends a distance away from the main body of the cartridge. Probes 707 may extend out of storage package structure 701 and be arranged such that a receiving feature of each probe 707 is mounted on projected edge 705 so as to present a receiving feature 704 (e.g., a loop) of each probe 707 in an engageable position. In other words, an electrode-loaded filament-like wire is positioned on projected edge 705 of cartridge 703 such that a receiving feature 704 on an end of the wire can be engaged with by another structure, such as an needle.
Projected edge 705 may extend outward from an upper surface of cartridge 703 at an angle that is arranged to best present the receiving portions of each probe 707. In some implementations, projected edge 705 extends out at a 37° angle (relative to the upper surface of cartridge 303). In some aspects, projected edge 705 may extend out at an angle that is from about 27° to about 47° (relative to the upper surface of the cartridge).
In some embodiments, probes 707 are removably adhered or coupled to a temporary attachment surface. In this context, the term adhere can be used to indicate that the probes are loosely associated with the flexible backing sheet such that they can be removed from the flexible backing sheet by an engaged needle. The probes 707 can be adhered to the flexible backing sheet in such a way that they remain associated with the sheet in an organized manner (e.g., with regular spacing forming an array of probes 707) until a probe 707 is engaged with needle 710 and peeled (delaminated) from the flexible backing sheet. In other words, needle 710 may engage with and pull probe 707 with sufficient mechanical force to overcome the strength of the adhesion between probe 707 and the flexible backing sheet without disturbing other probes 707 which are still affixed to the backing sheet or already implanted in tissue. In such implementations, needle 710 can be moved to catch the receiving element of probe 707 and to move with a peeling motion to pull probe 707 off of the flexible backing sheet without damaging probe 707.
In some embodiments, probes 707 can adhere to the flexible backing sheet by way of being deposited on a thin film. The flexible backing sheet may be a flexible material that forms a thin film, such as parylene, a parylene-based polymer, and/or the like. Such a thin film may be attached to the cartridge via an adhesive layer. In some embodiments, the flexible backing sheet can include one or more dielectric layers to facilitate release of probes 707 from the flexible backing sheet (e.g., in proximity to the electrodes). In some embodiments, the flexible backing sheet can be bonded or adhered to a solid support (e.g., stainless steel such as magnetic stainless steel) that permits handling by a machine and/or human. As another example, probes 707 may be deposited on a silicon backing such that the probes can be peeled off of the silicon backing. The silicon backing may be bonded to a substrate such as a black glass slide. The substrate may be bonded (e.g., with an adhesive layer) to the cartridge. Alternatively, or additionally, an adhesive substance can be used to adhere the probes to the flexible backing sheet.
The organized adherence of probes 707 to the flexible backing sheet can enable the use of robotic surgery techniques. As discussed above, computer vision techniques can be used to guide needle 710 to engage with probe 707 and remove probe 707 from cartridge 703 in an organized fashion.
In some embodiments, a cartridge-pillbox assembly, includes (a) a plurality of probes that each have: (i) a biocompatible substrate (e.g., the wire 408 of
In some embodiments, the cartridge-pillbox assembly may be manufactured as a single unit. Upon implantation of the a probe device, the cartridge may be removed from cartridge arm 320 and replaced with a new cartridge-pillbox assembly.
In
In
When needle assembly 801 engages with probe 802 and moves upward, exerting an upward force on probe 802, probe 802 disengages from temporary attachment surface 805 and peels off of temporary attachment surface 805. At this point, a selected probe 802 is attached to needle 804, forming a loaded needle (i.e., a needle that is reversibly engaged with a receiving feature of a probe). At this point, the needle is loaded with the probe 802 and ready to implant probe 802 in a target such as biological tissue.
As illustrated in
In some embodiments, the implantation of the probe into the biological tissue can include the use of a “touch-down” sensor (described above with respect to
Once the probes from a pillbox-cartridge assembly are implanted in the biological tissue, needle assembly 911 can travel out of the area of the head plate 901 as is illustrated in
As illustrated in
As illustrated in
As illustrated in
As shown in
As pictured, each probe device assembly 1003, or a collection of probe device assemblies 1003, may include an antenna configured to relay data, electricity, or other signals. Alternatively, or additionally, probe device assemblies 1003 may be coupled to one or more cables leading out of the skull and skin of a subject (not pictured). A probe device assembly 1003, or a collection of probe device assemblies 1003, may include or be coupled to a communications port arranged to be exposed outside of the biological tissue and configured to relay data, electricity, or other signals. As an example, each probe device assembly 1003 may be coupled to a wire, and the wires may connect to lead out to a communications port (e.g., USB C cable) disposed outside of the skin and skull of the subject. In either case, the data may be relayed to a computing device for analyzing data gathered by the probe device assemblies 1003.
A plurality of storage package structures 1103 may be positioned on or above tissue proximate to the implantation area. For example, storage package structure 1103 may rest on the tissue or be affixed to the skull above the biological tissue implantation area. Accordingly, in some embodiments, the entire probe device assembly (e.g., storage package structure 1103 and one or more probes, which are not visible in
The storage package structures 1103 may be coupled to respective connecting leads 1107. Connecting leads 1107 may, for example, be wires or flexible cable. Connecting leads 1107 may communicatively couple the storage package structures 1103 (e.g., the circuitry therein) to an internal hub 1105. Internal hub 1105 may gather data from each of the storage package structures 1103, as obtained via the respective probes thereof.
Internal hub 1105 may wirelessly communicate with an external hub 1109. In another embodiment, each probe device assembly may be in wireless communication with external hub 1109 (e.g., without internal hub 1105). External hub 1109 may process and/or store the received data. External hub 1109 may further transmit all or some of the received data to an external computing device with which external hub 1109 is in wired or wireless communication. For example, external hub 1109 may be coupled to an external computing device via a USB cable. Alternatively, or additionally, internal hub 1105 may be communicatively coupled to an external device via a wired connection.
In an example embodiment, which may correspond to the probe devices shown in any of
At block 1202, the method can begin with providing a cartridge that is removably coupled to probes and an IC chip (e.g., the cartridge-pillbox assembly of
At block 1204, the method can include selecting and targeting a probe. For example, as shown in
At block 1206, the method can include reversibly engaging a needle with the selected probe. The needle may be guided to the receiving feature of the selected probe. In some embodiments, computer vision techniques may be used to guide the needle to engagement, as described in the '520 patent. Visualization components such as cameras and light pipes can be used to identify position information and transmit such information to one or more microprocessor controllers. The microprocessor controller(s) may control motion of one or more robot arms (e.g., insertion arm 230 of
An engagement feature (e.g., a hook or the like) of the needle may catch the receiving feature of the probe. In some aspects, the motion of the needle engaging with the receiving feature of the probe device can include a partial rotation of the needle that aids with both the insertion of the probe device into biological tissue and the withdrawal of the needle once the probe device potion has been secured within the biological tissue. More specifically, once the needle has engaged with the probe receiving feature, the robotic arm controlling the motion of the needle can rotate a predetermined amount, further securing the probe device on the engagement feature of the needle. In various aspects, this rotation of the needle can be from about five to about one hundred eighty degrees (5°-180°), or increments or gradients of rotation within that range. In some aspects, where the probe device is in part made from a wire or filament, this rotation can encourage, nudge, or guide a portion of the probe device to align that wire or filament alongside the needle.
The engagement of the needle and receiving feature may be aided using a pincher to guide the probe (e.g., pincher 22 of
At block 1208, the method can include piercing biological tissue with the needle and the probe. In some implementations, the target depth of probe insertion can be from about one to three millimeters (1-3 mm), or increments or gradients of depth within that range. The loaded needle may be inserted into the biological tissue by application of a downward force on the needle via the insertion arm.
At block 1210, the method can include withdrawing the needle while leaving the probe within the biological tissue. The needle may be retracted by exerting a substantially upward force on the needle via the insertion arm. In some embodiments, the needle may be retracted by a linear motor at a rapid acceleration (e.g., up to 30,000 mm/s) to encourage separation of the needle from the probe. Alternatively, or additionally, torque may be applied to encourage disengagement of the probe and needle (e.g., by twisting the needle).
At block 1212, there may be a determination whether additional probes are on the cartridge. For example, the cartridge may initially be coupled to five probes as shown in
At block 1214, the IC chip is detached from the cartridge, leaving the IC chip with the biological tissue. “With the biological tissue” may refer to being in contact with, or within about 7 mm of, the biological tissue. For example, the storage package structure may be coupled to a head plate such that the storage package structure is touching, or hovering slightly over, the brain tissue. Such an implantation scheme is illustrated, for example, in
The cartridge may be disengaged from the storage package structure by applying an upward force on the cartridge and/or a downward force on the target tissue to overcome the magnetic attraction between the storage package structure and the cartridge. Disengagement of the storage package structure and cartridge is further described above with respect to
In some embodiments, additional probe device assemblies may be implanted by repeating steps 1202-1214. This may result in the implantation of multiple probe devices. For example, in
The systems and methods described herein may be capable of inserting about six probes per minute. For example, with 32 electrodes per probe, the system can insert up to 192 electrodes per minute. Further, the needle assembly can be replaced mid-surgery in under a minute. Accordingly, the techniques described herein enable rapid implantation of hundreds or up to tens of thousands of electrodes in biological tissue.
The probe devices described herein can be used for science and research experiments, neural prostheses (e.g., brain/nerve machine interfaces) and the treatment of neuronal disease (e.g., deep brain stimulation for the treatment of epilepsy, sensory recording and/or electrical stimulation for the treatment of Alzheimer's disease, sensory recording and/or electrical stimulation for the treatment of Parkinson's disease, or the like).
In some embodiments, the probe device can be configured for implantation in biological tissue. Biological tissue may include, but is not limited to, the brain, muscle, liver, pancreas, spleen, kidney, bladder, intestine, heart, stomach, skin, colon and the like. Additionally, the electrode array designs may be used in connection with any suitable multicellular organism including, but not limited to, invertebrates, vertebrates, fish, bird, mammals, rodents (e.g., mice, rats), ungulates, cows, sheep, pigs, horses, non-human primates, and humans. Moreover, biological tissue may be ex vivo (e.g., tissue explant), or in vivo (e.g., the method is a surgical procedure performed on a patient).
Bus subsystem 1302 provides a mechanism for letting the various components and subsystems of computer system 1300 communicate with each other as intended. Although bus subsystem 1302 is shown schematically as a single bus, alternative embodiments of the bus subsystem may utilize multiple buses. Bus subsystem 1302 may be any of several types of bus structures including a memory bus or memory controller, a peripheral bus, a local bus using any of a variety of bus architectures, and the like. For example, such architectures may include an Industry Standard Architecture (ISA) bus, Micro Channel Architecture (MCA) bus, Enhanced ISA (EISA) bus, Video Electronics Standards Association (VESA) local bus, and Peripheral Component Interconnect (PCI) bus, which can be implemented as a Mezzanine bus manufactured to the IEEE P1386.1 standard, and the like.
Processing subsystem 1304 controls the operation of computer system 1300 and may comprise one or more processors, application specific integrated circuits (ASICs), or field programmable gate arrays (FPGAs). The processors may include be single core or multicore processors. The processing resources of computer system 1300 can be organized into one or more processing units 1332, 1334, etc. A processing unit may include one or more processors, one or more cores from the same or different processors, a combination of cores and processors, or other combinations of cores and processors. In some embodiments, processing subsystem 1304 can include one or more special purpose co-processors such as graphics processors, digital signal processors (DSPs), or the like. In some embodiments, some or all of the processing units of processing subsystem 1304 can be implemented using customized circuits, such as application specific integrated circuits (ASICs), or field programmable gate arrays (FPGAs).
In some embodiments, the processing units in processing subsystem 1304 can execute instructions stored in system memory 1310 or on computer readable storage media 1322. In various embodiments, the processing units can execute a variety of programs or code instructions and can maintain multiple concurrently executing programs or processes. At any given time, some or all of the program code to be executed can be resident in system memory 1310 and/or on computer-readable storage media 1322 including potentially on one or more storage devices. Through suitable programming, processing subsystem 1304 can provide various functionalities described above. In instances where computer system 1300 is executing one or more virtual machines, one or more processing units may be allocated to each virtual machine.
In certain embodiments, a processing acceleration unit 1306 may optionally be provided for performing customized processing or for off-loading some of the processing performed by processing subsystem 1304 so as to accelerate the overall processing performed by computer system 1300.
I/O subsystem 1308 may include devices and mechanisms for inputting information to computer system 1300 and/or for outputting information from or via computer system 1300. In general, use of the term input device is intended to include all possible types of devices and mechanisms for inputting information to computer system 1300. User interface input devices may include, for example, a keyboard, pointing devices such as a mouse or trackball, a touchpad or touch screen incorporated into a display, a scroll wheel, a click wheel, a dial, a button, a switch, a keypad, audio input devices with voice command recognition systems, microphones, and other types of input devices. User interface input devices may also include motion sensing and/or gesture recognition devices such as the Microsoft Kinect® motion sensor that enables users to control and interact with an input device, the Microsoft Xbox® 360 game controller, devices that provide an interface for receiving input using gestures and spoken commands. User interface input devices may also include eye gesture recognition devices such as the Google Glass® blink detector that detects eye activity (e.g., “blinking” while taking pictures and/or making a menu selection) from users and transforms the eye gestures as inputs to an input device (e.g., Google Glass®). Additionally, user interface input devices may include voice recognition sensing devices that enable users to interact with voice recognition systems (e.g., Siri® navigator) through voice commands.
Other examples of user interface input devices include, without limitation, three dimensional (3D) mice, joysticks or pointing sticks, gamepads and graphic tablets, and audio/visual devices such as speakers, digital cameras, digital camcorders, portable media players, webcams, image scanners, fingerprint scanners, barcode reader 3D scanners, 3D printers, laser rangefinders, and eye gaze tracking devices. Additionally, user interface input devices may include, for example, medical imaging input devices such as computed tomography, magnetic resonance imaging, position emission tomography, and medical ultrasonography devices. User interface input devices may also include, for example, audio input devices such as MIDI keyboards, digital musical instruments and the like.
In general, use of the term output device is intended to include all possible types of devices and mechanisms for outputting information from computer system 1300 to a user or other computer. User interface output devices may include a display subsystem, indicator lights, or non-visual displays such as audio output devices, etc. The display subsystem may be a cathode ray tube (CRT), a flat-panel device, such as that using a liquid crystal display (LCD) or plasma display, a projection device, a touch screen, and the like. For example, user interface output devices may include, without limitation, a variety of display devices that visually convey text, graphics and audio/video information such as monitors, printers, speakers, headphones, automotive navigation systems, plotters, voice output devices, and modems.
Storage subsystem 1318 provides a repository or data store for storing information and data that is used by computer system 1300. Storage subsystem 1318 provides a tangible non-transitory computer-readable storage medium for storing the basic programming and data constructs that provide the functionality of some embodiments. Storage subsystem 1318 may store software (e.g., programs, code modules, instructions) that when executed by processing subsystem 1304 provides the functionality described above. The software may be executed by one or more processing units of processing subsystem 1304. Storage subsystem 1318 may also provide a repository for storing data used in accordance with the teachings of this disclosure.
Storage subsystem 1318 may include one or more non-transitory memory devices, including volatile and non-volatile memory devices. As shown in
By way of example, and not limitation, as depicted in
Computer-readable storage media 1322 may store programming and data constructs that provide the functionality of some embodiments. Computer-readable media 1322 may provide storage of computer-readable instructions, data structures, program modules, and other data for computer system 1300. Software (programs, code modules, instructions) that, when executed by processing subsystem 1304 provides the functionality described above, may be stored in storage subsystem 1318. By way of example, computer-readable storage media 1322 may include non-volatile memory such as a hard disk drive, a magnetic disk drive, an optical disk drive such as a CD ROM, DVD, a Blu-Ray® disk, or other optical media. Computer-readable storage media 1322 may include, but is not limited to, Zip® drives, flash memory cards, universal serial bus (USB) flash drives, secure digital (SD) cards, DVD disks, digital video tape, and the like. Computer-readable storage media 1322 may also include, solid-state drives (SSD) based on non-volatile memory such as flash-memory based SSDs, enterprise flash drives, solid state ROM, and the like, SSDs based on volatile memory such as solid state RAM, dynamic RAM, static RAM, DRAM-based SSDs, magnetoresistive RAM (MRAM) SSDs, and hybrid SSDs that use a combination of DRAM and flash memory based SSDs.
In certain embodiments, storage subsystem 1318 may also include a computer-readable storage media reader 1320 that can further be connected to computer-readable storage media 1322. Reader 1320 may receive and be configured to read data from a memory device such as a disk, a flash drive, etc.
In certain embodiments, computer system 1300 may support virtualization technologies, including but not limited to virtualization of processing and memory resources. For example, computer system 1300 may provide support for executing one or more virtual machines. In certain embodiments, computer system 1300 may execute a program such as a hypervisor that facilitated the configuring and managing of the virtual machines. Each virtual machine may be allocated memory, compute (e.g., processors, cores), I/O, and networking resources. Each virtual machine generally runs independently of the other virtual machines. A virtual machine typically runs its own operating system, which may be the same as or different from the operating systems executed by other virtual machines executed by computer system 1300. Accordingly, multiple operating systems may potentially be run concurrently by computer system 1300.
Communications subsystem 1324 provides an interface to other computer systems and networks. Communications subsystem 1324 serves as an interface for receiving data from and transmitting data to other systems from computer system 1300. For example, communications subsystem 1324 may enable computer system 1300 to establish a communication channel to one or more client devices via the Internet for receiving and sending information from and to the client devices. For example, the communication subsystem may be used to receive speech input from a client device and send a value to the client device in response.
Communication subsystem 1324 may support both wired and/or wireless communication protocols. For example, in certain embodiments, communications subsystem 1324 may include radio frequency (RF) transceiver components for accessing wireless voice and/or data networks (e.g., using cellular telephone technology, advanced data network technology, such as 3G, 4G or EDGE (enhanced data rates for global evolution), Wi-Fi (IEEE 802.XX family standards, or other mobile communication technologies, or any combination thereof), global positioning system (GPS) receiver components, and/or other components. In some embodiments communications subsystem 1324 can provide wired network connectivity (e.g., Ethernet) in addition to or instead of a wireless interface.
Communication subsystem 1324 can receive and transmit data in various forms. For example, in some embodiments, in addition to other forms, communications subsystem 1324 may receive input communications in the form of structured and/or unstructured data feeds 1326, event streams 1328, event updates 1330, and the like. For example, communications subsystem 1324 may be configured to receive (or send) data feeds 1326 in real-time from users of social media networks and/or other communication services such as Twitter® feeds, Facebook® updates, web feeds such as Rich Site Summary (RSS) feeds, and/or real-time updates from one or more third party information sources.
In certain embodiments, communications subsystem 1324 may be configured to receive data in the form of continuous data streams, which may include event streams 1328 of real-time events and/or event updates 1330, that may be continuous or unbounded in nature with no explicit end. Examples of applications that generate continuous data may include, for example, sensor data applications, financial tickers, network performance measuring tools (e.g. network monitoring and traffic management applications), clickstream analysis tools, automobile traffic monitoring, and the like.
Communications subsystem 1324 may also be configured to communicate data from computer system 1300 to other computer systems or networks. The data may be communicated in various different forms such as structured and/or unstructured data feeds 1326, event streams 1328, event updates 1330, and the like to one or more databases that may be in communication with one or more streaming data source computers coupled to computer system 1300.
Computer system 1300 can be one of various types, including a handheld portable device (e.g., an iPhone® cellular phone, an iPad® computing tablet, a PDA), a wearable device (e.g., a Google Glass® head mounted display), a personal computer, a workstation, a mainframe, a kiosk, a server rack, or any other data processing system. Due to the ever-changing nature of computers and networks, the description of computer system 1300 depicted in
It should be appreciated that the robotic system handling, coupling with, and engaging with one or more portions of a probe device can include a control system (or microprocessor controller) having one or more microprocessors/processing devices that can further be a component of the overall system. The control system can be local or remote to the robotic system, and can also include a display interface and/or operational controls configured to be handled by a user to alter the program of the robotic arm, to visualize the probe device, to visualize biological tissue into which the probe device is being inserted, and change configurations of the robotic device, and sub-portions thereof. Such processing devices can be communicatively coupled to a non-volatile memory device via a bus. The non-volatile memory device may include any type of memory device that retains stored information when powered off. Non-limiting examples of the memory device include electrically erasable programmable read-only memory (“ROM”), flash memory, or any other type of non-volatile memory. In some aspects, at least some of the memory device can include a non-transitory medium or memory device from which the processing device can read instructions. A non-transitory computer-readable medium can include electronic, optical, magnetic, or other storage devices capable of providing the processing device with computer-readable instructions or other program code. Non-limiting examples of a non-transitory computer-readable medium include (but are not limited to) magnetic disk(s), memory chip(s), ROM, random-access memory (“RAM”), an ASIC, a configured processor, optical storage, and/or any other medium from which a computer processor can read instructions. The instructions may include processor-specific instructions generated by a compiler and/or an interpreter from code written in any suitable computer-programming language, including, for example, C, C++, C#, Java, Python, Perl, JavaScript, etc.
While the above description describes various embodiments of the invention and the best mode contemplated, regardless how detailed the above text, the invention can be practiced in many ways. Details of the system may vary considerably in its specific implementation, while still being encompassed by the present disclosure. As noted above, particular terminology used when describing certain features or aspects of the invention should not be taken to imply that the terminology is being redefined herein to be restricted to any specific characteristics, features, or aspects of the invention with which that terminology is associated. In general, the terms used in the following claims should not be construed to limit the invention to the specific examples disclosed in the specification, unless the above Detailed Description section explicitly defines such terms. Accordingly, the actual scope of the invention encompasses not only the disclosed examples, but also all equivalent ways of practicing or implementing the invention under the claims.
The teachings of the invention provided herein can be applied to other systems, not necessarily the system described above. The elements and acts of the various examples described above can be combined to provide further implementations of the invention. Some alternative implementations of the invention may include not only additional elements to those implementations noted above, but also may include fewer elements. Further any specific numbers noted herein are only examples; alternative implementations may employ differing values or ranges, and can accommodate various increments and gradients of values within and at the boundaries of such ranges.
References throughout the foregoing description to features, advantages, or similar language do not imply that all of the features and advantages that may be realized with the present technology should be or are in any single embodiment of the invention. Rather, language referring to the features and advantages is understood to mean that a specific feature, advantage, or characteristic described in connection with an embodiment is included in at least one embodiment of the present technology. Thus, discussion of the features and advantages, and similar language, throughout this specification may, but do not necessarily, refer to the same embodiment. Furthermore, the described features, advantages, and characteristics of the present technology may be combined in any suitable manner in one or more embodiments. One skilled in the relevant art will recognize that the present technology can be practiced without one or more of the specific features or advantages of a particular embodiment. In other instances, additional features and advantages may be recognized in certain embodiments that may not be present in all embodiments of the present technology.
This application claims the benefit of priority of U.S. Provisional Application No. 62/731,446 titled “Cartridge for Implantable Devices” and filed on Sep. 14, 2018, which is herein incorporated by reference in its entirety for all purposes.
| Number | Date | Country | |
|---|---|---|---|
| 62731446 | Sep 2018 | US |
