The present disclosure is directed to systems and methods related to a biopsy tool.
Minimally invasive medical techniques are intended to reduce the amount of tissue that is damaged during medical procedures, thereby reducing patient recovery time, discomfort, and harmful side effects. Such minimally invasive techniques may be performed through natural orifices in a patient anatomy or through one or more surgical incisions. Through these natural orifices or incisions clinicians may insert minimally invasive medical instruments (including surgical, diagnostic, and/or therapeutic instruments) to reach a target tissue location. One such minimally invasive technique is to use a flexible and/or steerable elongate device, such as a flexible catheter that can be inserted into anatomic passageways and navigated toward a region of interest within the patient anatomy. Medical tools, such as biopsy instruments, may be deployed through the catheter to perform a medical procedure at the region of interest.
In one embodiment, a biopsy tool may include a flexible cannula having a cutting surface on a distal end portion of the flexible cannula; and a flexible stylet disposed at least partially within and extending from the distal end portion of the flexible cannula. The flexible stylet may have an atraumatic tip disposed on a distal end portion of the flexible stylet, where the atraumatic tip is configured to at least partially shield the cutting surface of the flexible cannula when the flexible cannula and the flexible stylet are in a closed configuration.
In one embodiment, a method for performing a biopsy may include: passing a biopsy tool through an internal channel of a medical device to a target biopsy site in a patient, wherein the biopsy tool comprises a flexible cannula having a cutting surface on a distal end portion of the flexible cannula and a flexible stylet disposed at least partially within and extending from the distal end portion of the flexible cannula; and at least partially shielding the cutting surface of the flexible cannula with an atraumatic tip of the flexible stylet as the biopsy tool is passed through the internal channel of the medical device.
In one embodiment, a biopsy tool may include a flexible cannula having a cutting surface on a distal end portion of the flexible cannula; and a flexible stylet disposed at least partially within and extending from the distal end portion of the flexible cannula. The flexible stylet may have an atraumatic tip at a distal end portion that extends proximally towards the cutting surface of the flexible cannula, where an outer maximum transverse dimension of the atraumatic tip is larger than an outer maximum transverse dimension of the flexible cannula at least at a leading distal end of the flexible cannula.
It should be appreciated that the foregoing concepts, and additional concepts discussed below, may be arranged in any suitable combination, as the present disclosure is not limited in this respect. Further, other advantages and novel features of the present disclosure will become apparent from the following detailed description of various non-limiting examples when considered in conjunction with the accompanying figures.
In cases where the present specification and a document incorporated by reference include conflicting and/or inconsistent disclosure, the present specification shall control. If two or more documents incorporated by reference include conflicting and/or inconsistent disclosure with respect to each other, then the document having the later effective date shall control.
The accompanying drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. In the drawings:
A biopsy tool may be used to collect biopsy samples from a patient to diagnose a benign or malignant lesion. Larger biopsy samples with more layers of intact tissue may be required to definitively diagnosis a benign lesion than to diagnose a malignant lesion. If a large enough biopsy tissue sample is not collected, the patient may not receive a clear diagnosis of a suspicious lesion and may be subject to repeated and/or more invasive procedures. Conventional percutaneous devices for collecting lung biopsy samples from a patient typically include a rigid biopsy needle. A doctor guides the rigid biopsy needle from outside the patient's body, puncturing the patient's skin, underlying tissue, and lungs to position the rigid biopsy needle at the lesion site to collect a sample.
A flexible robotic-assisted medical system, or other flexible medical device, may permit access to the lungs or other organs via different routes (e.g., endoluminally through a patient's mouth, trachea, airway, etc.). However, conventional rigid biopsy tools may be incompatible with these medical systems and procedures. For example, lung biopsy procedures include inserting an elongated, flexible device with an internal channel (e.g., catheter, endoscope, laparoscope) into a patient's mouth through the airway to a target tissue site (e.g., lesion) in the lungs. As such, a flexible biopsy tool is desirable to permit the biopsy tool to be inserted through a narrow and sometimes tortuous internal channel of the elongated device to reach a distal opening of the elongated device at the target tissue.
Furthermore, conventional biopsy tools include a sharp distal tip to collect a tissue sample at the target site. In some instances, a sharp tip may damage the internal channel of the flexible device as the biopsy tool passes through the flexible device. More than one biopsy sample may be taken, so one or more biopsy tools may be inserted into and removed from the flexible device multiple times during a procedure. To prevent damage to the internal channel from the sharp tip as the biopsy tools pass through the channel in both directions, an outer protective sheath positioned between the biopsy tool and the surface of the internal channel is typically used to shield the internal channel from the sharp tip. However, the protective sheath around the biopsy takes up space in the internal channel and reduces the size of a biopsy tool that may fit through the narrow channel, resulting in smaller tissue sample sizes that may be collected by the narrower biopsy tool.
In view of the above, described herein are designs for a flexible biopsy tool that is compatible with elongated flexible devices having an internal channel. In some examples, the flexible biopsy tool includes a flexible cannula having a cutting surface on a distal end. A flexible stylet disposed at least partially within the cannula extends from a distal end portion of the flexible cannula. The stylet may include an atraumatic tip at a distal end of the stylet that shields the cutting surface of the cannula when the cannula and the stylet are in a closed configuration. As such, when in the closed position, the flexible biopsy tool may traverse through an elongated device to a distal opening of the device without risk of damage to the internal channel of the elongated device from the cutting surface. An outer protective sheath might not be used to protect the internal channel from the cutting surface of the biopsy tool in such an example, allowing the biopsy tool to be sized larger than biopsy tools that are used with outer sheaths.
In some examples, a flexible stylet of a biopsy tool includes a tissue-collecting notch that is exposed when the flexible cannula and the flexible stylet are in an open configuration. When a distal end of the biopsy tool reaches a distal opening of an associated elongated device and is positioned proximate to a tissue target site, the biopsy tool may be moved from the closed configuration to the open configuration (e.g., by moving the flexible cannula, the flexible stylet, or both). Once in the open configuration, the biopsy tool may be positioned to receive a portion of the target tissue into a volume of the notch. In the open configuration, the cutting surface of the cannula might no longer be shielded by the atraumatic tip, and the exposed cutting surface may be used to shear off a sample of the target tissue. For example, the biopsy device may be actuated back to the closed position (e.g., by firing the cannula, stylet, or both to move axially relative to each other), causing the cutting surface to shear off the target tissue positioned in the notch as the cutting surface and a distal end portion of the stylet are displaced toward each other.
In examples including the above noted atraumatic tip, the atraumatic tip may be sized and shaped to at least partially shield the cutting surface of the associated cannula to help prevent, or at least partially mitigate, the cutting surface catching on or cutting the internal channel of the elongated device as the biopsy tool travels through the device. In some examples, a proximal portion of the atraumatic tip may be shaped to conform to and match the shape of at least a portion of the cutting surface when the biopsy tool is in the closed configuration with the cutting surface positioned adjacent to the proximal portion of the atraumatic tip. In some examples, the atraumatic tip may have a larger diameter, or other maximum transverse dimension, than a corresponding maximum transverse dimension of a distal end portion of the cannula to prevent the cutting surface of the cannula from extending past the atraumatic tip. Thus, the cutting surface might only be exposed when the biopsy tool is moved to the open configuration. In some examples, a distal end portion of the atraumatic tip may be chamfered at an appropriate angle to allow the tip to safely navigate through an elongated internal channel and still allow the tip to puncture through tissue at a tissue target site.
In some examples, the disclosed flexible biopsy tool may be used to capture larger target tissue sample sizes as compared to conventional tools which may improve the accurate diagnoses of malignant and benign tumors. The disclosed flexible biopsy tools may also be compatible with a variety of flexible medical devices, including elongated devices with internal channels (e.g., catheter, endoscope, laparoscope, etc.). Regardless, in some examples, disclosed biopsy tools (e.g., without outer protective sheaths) may be navigated through narrow, tortuous elongated devices without risk of damage to the elongated devices in order to reach target tissue sites such as suspicious lesions throughout the body, including in the lungs and other organs. However, examples in which a sheath is used with a particular example of a biopsy tool are also contemplated as the disclosure is not so limited.
While some examples provided herein are related to usage of the disclosed biopsy tools with robotic-assisted surgical, diagnostic, and/or therapeutic procedures, any reference to medical or surgical instruments as well as medical or surgical methods is non-limiting. Specifically, the systems, instruments, and methods described herein may be used for manual operations, robotic-assisted operations, and/or any other desired usage. Additionally, the systems, instruments, and methods described herein may be used for operations related to humans, animals, human cadavers, animal cadavers, portions of human or animal anatomy, organ models, non-surgical diagnosis, as well as for industrial systems and general robotic, general teleoperational, robotic medical systems, and/or any other appropriate application as the disclosure is not limited in this manner.
This disclosure describes various instruments and portions of instruments in terms of their state in three-dimensional space. As used herein, the term “position” refers to the location of an object or a portion of an object in a three-dimensional space (e.g., three degrees of translational freedom along Cartesian x-, y-, and z-coordinates). As used herein, the term “orientation” refers to the rotational placement of an object or a portion of an object (three degrees of rotational freedom—e.g., roll, pitch, and yaw). As used herein, the term “pose” refers to the position of an object or a portion of an object in at least one degree of translational freedom and to the orientation of that object or portion of the object in at least one degree of rotational freedom (up to six total degrees of freedom). As used herein, the term “shape” refers to a set of poses, positions, or orientations measured along an object.
Turning to the figures, specific non-limiting examples are described in further detail. It should be understood that the various systems, components, features, and methods described relative to these examples may be used either individually and/or in any desired combination as the disclosure is not limited to only the specific examples described herein.
As shown in
It should be noted that the disclosure is not limited to examples where a catheter is inserted into a patient's airway to access target tissue in the lungs, and any elongated device may be inserted into a patient (via a natural opening or through a patient's skin) to access any organ or tissue site in the patient. Reference to a catheter throughout the disclosure may also refer to other elongated devices with internal channels, such as an endoscope, laparoscope, and/or any other appropriate device including a channel through which the biopsy needle may be passed as the disclosure is not so limiting.
The cannula 102 may be flexible to follow the narrow (and sometimes tortuous) internal channel 110 of a catheter 108 that has been inserted into a patient and navigated to a target tissue site. Accordingly, as shown in
As shown in
In some examples, the outer diameter of the cannula 102 may be matched with the inner diameter of the internal channel of a catheter, while allowing for sufficient clearance for the cannula to traverse through the catheter while preventing undesirable movement of the cannula (e.g., bouncing around within the internal channel). In some examples, the outer diameter, or other appropriate maximum transverse dimension, of the cannula 102 may be between or equal to approximately 23-15 gauge (i.e., 0.65 mm and 1.8 mm), 17-15 gauge (i.e., about 1.4 mm and 1.8 mm), and/or any other appropriate size range. Such sizes may allow the biopsy tool 100 to collect much larger tissue sample sizes than biopsy tools having protective outer sheaths, which may include cannulas in the range of 19-18 gauge (i.e., 1.07 mm and 1.27 mm). However, other size ranges both greater and less than those noted above are also contemplated as the disclosure is not limited in this fashion.
As shown in
In some examples, the distal end portion 122 may be angled such that the distal end portion 122 is sharp enough to puncture tissue at a tissue target site, but not too sharp to damage the internal channel of a catheter as the biopsy tool 100 passes through the catheter. In some examples, the angle C of the distal end portion (see
In some examples, as shown in
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In some examples, and as shown in
As shown in
As discussed above, in some examples, a biopsy tool 100 includes an atraumatic tip 120 that shields a cutting surface 116 on the distal end of the cannula 102 when the biopsy tool is in a closed configuration. The atraumatic tip 120 prevents damage to an internal channel of a catheter and unwanted cutting of tissue. Once the biopsy tool 100 has navigated through the catheter to a distal opening of the catheter and the atraumatic tip 120 has been positioned adjacent a target tissue site, the biopsy tool 100 may be moved to an open configuration to expose a notch 140 formed in the stylet 104 (e.g., as shown in
As shown in
In some examples, a length of the spine 142 may be equal to or greater than approximately 5 mm and less than or equal to approximately 25 mm. In some examples, the length of the spine 142 may be between or equal to approximately 10 mm and 20 mm, 14 mm and 16 mm, or any other desired range. In one example, the spine may have a length of about 13 mm. In some examples, a thickness (t) of the spine may be equal to or greater than approximately 0.007 inches and less than or equal to approximately 0.015 inches. In some examples, a width of the spine 142 may be equal to or greater than approximately 0.025 and less than or equal to approximately 0.05 inches. Combinations of the forgoing dimensions, as well as dimensions both greater than and less than those noted above are contemplated as the disclosure is not so limited.
In some examples, the spine 142 may include a plurality of slits (not shown) along a length of the spine. The plurality of slits may increase the flexibility of the spine to allow for easier tracking of the stylet 104 with a shape of the flexible cannula 102 as the biopsy tool is passed through an internal channel of a catheter or other device. In some examples, a pattern for a plurality of slits on the spine may be similar to the pattern of the plurality of slits 114 in the cannula 102, shown in
As shown in
In some examples, the biopsy tool may include, or be configured to be connected to, a vacuum source. During operation, the vacuum source may apply a suction to at least a portion of the interior volume of the notch to bias a portion of target tissue into the notch. The vacuum source may include a vacuum lock, an active pump, or any other appropriate source of suction. The suction may be provided through a channel in the cannula 102, a tube extending through the cannula to the notch, a channel formed in the stylet 104, or any other construction that provides fluid communication between a vacuum source and the notch to apply the desired suction to at least a portion of the notch.
As mentioned above, the stylet 104 may be rigid enough to allow the biopsy tool to puncture through tissue and to move through an internal channel of a catheter. In some examples, a stylet 104 may include a solid portion 132 that is received at least partially within a distal end portion of the cannula 102. In the depicted example, an atraumatic tip 120 may correspond to a collar press fit on, or otherwise attached to, the solid portion of the stylet to provide the desired shielding of the cutting surface of the cannula. In the closed configuration, as shown in
As mentioned above, in some examples, the biopsy tool 100 may include a mechanical stop to prevent a cutting surface 116 of a cannula 102 from extending past an atraumatic tip 120 of a stylet 104. As shown in
In some examples, the stylet 404 may include a proximal segment 429 positioned proximal to a notch 426 of the stylet. The proximal segment 429 may be smaller in diameter than the atraumatic tip to increase the flexibility of the stylet 404 and allow for better tracking in a cannula. As shown in
In some examples, as shown in
In some examples, as shown in
In the examples described above, a cannula and/or a stylet of a biopsy tool may be made using metal, plastic, a combination thereof, and/or any other appropriate material. For example, both the cannula and stylet may be made of metal (e.g., stainless steel, nitinol, any clastic biocompatible alloy, spiral cut stainless steel, coil pipe stainless steel, etc.). Alternatively, one of the cannula, stylet, or both may be made of a plastic (e.g., PEEK, nylon, polyethylene, etc.). However, it should be understood that the cannula and/or stylet may be made of any material that provides sufficient flexibility to traverse through a narrow, tortuous catheter, while also being rigid enough to collect a tissue sample, and in some examples, puncture through tissue.
In optional step 810, a tool having a sharp distal tip may be inserted through the internal channel of the elongated device to the distal opening. The tool may be used to create a pilot hole at the tissue target site. A pilot hole may be useful to assist a biopsy tool having an atraumatic tip in puncturing through tissue at the target site. After creating a pilot hole, the tool is then removed. The tool may be inserted prior to inserting the elongated device into the patient or after the elongated device is inserted. An outer protective sheath may be used with the sharp tool to prevent the sharp tool from damaging the internal channel of the elongated device.
In step 820, a biopsy tool is inserted into the proximal opening of the elongated device and advanced through the internal channel to the distal opening. The biopsy tool may be biased towards a closed configuration while traversing the internal channel. In the closed configuration, an atraumatic tip on the distal end portion of a stylet may shield a cutting surface on a distal end of a cannula to protect the internal channel from damage. However, examples in which a sharp distal tip is used are also contemplated.
In step 830, the atraumatic tip at the distal end of the biopsy tool is positioned proximate to the target tissue site. The tissue site may be a suspicious lesion in a patient, such as in the lungs or other organ. Positioning the atraumatic tip proximate to target tissue may include puncturing through tissue to reach a suspicious lesion (e.g., an extraluminal lesion in the lungs). In step 840, the biopsy tool is moved to an open configuration to expose a notch in the stylet. The biopsy tool may be moved to the open configuration by axially moving the cannula in a proximal direction, or axially moving the stylet in a distal direction, or a combination of both. Alternatively, the tip of the biopsy tool may be pushed into a target tissue (step 830) while still in the closed configuration, and then moved to the open configuration (step 840).
Once in the open configuration, in step 850, the biopsy tool is positioned to receive a portion of the target tissue into the exposed notch. In some examples, the catheter, or other device, may be slightly articulated in a direction of the notch (e.g., manually or via software if robotically assisted) to precisely position the target tissue into the notch with increased control. In some examples, the biopsy device may include or be connected to a vacuum source through a channel in the cannula and/or stylet to apply a suction at the notch to ensure a portion of the target tissue is well seated in the notch.
In step 860, the biopsy tool is actuated to move the cannula and stylet to the closed configuration. In some examples, the cannula is actuated to move axially in a distal direction with sufficient force, causing the cutting surface on the distal end of the cannula to shear off the target tissue positioned in the notch. Alternatively, the stylet may be actuated to move axially in a proximal direction, or both the cannula and stylet may be actuated simultaneously. In some examples, a handle of the biopsy tool may include an actuator to actuate the biopsy tool between the open and closed configurations. The biopsy tool may include any actuation system including, for example, a servo, inputs from a separate robotic system, a separate power pack, the spring and draw handle arrangement described above, and/or any other appropriate actuator as the disclosure is not so limiting.
The biopsy device may store the sheared off target tissue in the notch, protected by the inner surface of the cannula when in the closed configuration. The biopsy tool may then be removed from the catheter to retrieve the target sample. The same or different biopsy tool may be inserted to retrieve multiple target tissue samples.
In some examples, the medical tools disclosed herein may be used in a medical procedure performed with a robotic-assisted medical system as described in further detail below. As shown in
Robotic-assisted medical system 900 also may include a display system 910 for displaying an image or representation of the surgical site and medical tool 904 generated by a sensor system 908 which may include an endoscopic imaging system. Display system 910 and master assembly 906 may be oriented so an operator O can control medical tool 904 and master assembly 906 with the perception of telepresence. Any of the previously described graphical user interfaces may be displayable on a display system 910 and/or a display system of an independent planning workstation.
In some examples, medical tool 904 may include components for use in surgery, biopsy, ablation, illumination, irrigation, or suction. Optionally medical tool 904, together with sensor system 908 may be used to gather (e.g., measure or survey) a set of data points corresponding to locations within anatomic passageways of a patient, such as patient P. In some examples, medical tool 904 may include components of the imaging system which may include an imaging scope assembly or imaging instrument that records a concurrent or real-time image of a surgical site and provides the image to the operator or operator O through the display system 910. In some examples, imaging system components may be integrally or removably coupled to medical tool 904. However, in some examples, a separate endoscope, attached to a separate manipulator assembly may be used with medical tool 904 to image the surgical site. The imaging system may be implemented as hardware, firmware, software or a combination thereof which interact with or are otherwise executed by one or more computer processors, which may include the processors of the control system 912.
The sensor system 908 may include a position/location sensor system (e.g., an electromagnetic (EM) sensor system) and/or a shape sensor system for determining the position, orientation, speed, velocity, pose, and/or shape of the medical tool 904.
Robotic-assisted medical system 900 may also include control system 912. Control system 912 may include at least one memory 916 and at least one computer processor 914 for effecting control between medical tool 904, master assembly 906, sensor system 908, and display system 910. Control system 912 also may include programmed instructions (e.g., a non-transitory machine-readable medium storing the instructions) to implement a plurality of operating modes of the robotic-assisted medical system including a navigation planning mode, a navigation mode, and/or a procedure mode. Control system 912 also may include programmed instructions (e.g., a non-transitory machine-readable medium storing the instructions) to implement some or all of the methods described in accordance with aspects disclosed herein, including, for example, moving a mounting bracket coupled to the manipulator assembly to the connection member, processing sensor information about the mounting bracket and/or connection member, and providing adjustment signals or instructions for adjusting the mounting bracket.
Control system 912 may further include a virtual visualization system to provide navigation assistance to operator O when controlling medical tool 904 during an image-guided surgical procedure. Virtual navigation using the virtual visualization system may be based upon reference to an acquired pre-operative or intra-operative dataset of anatomic passageways. The virtual visualization system processes images of the surgical site imaged using imaging technology such as computerized tomography (CT), magnetic resonance imaging (MRI), fluoroscopy, thermography, ultrasound, optical coherence tomography (OCT), thermal imaging, impedance imaging, laser imaging, nanotube X-ray imaging, and/or the like.
Tracking system 1030 may optionally track distal end 1018 and/or one or more of the segments 1024 using a shape sensor 1022. Shape sensor 1022 may optionally include an optical fiber aligned with flexible body 1016 (e.g., provided within an interior channel (not shown) or mounted externally). The optical fiber of shape sensor 1022 forms a fiber optic bend sensor for determining the shape of flexible body 1016. In one alternative, optical fibers including Fiber Bragg Gratings (FBGs) are used to provide strain measurements in structures in one or more dimensions. Various systems and methods for monitoring the shape and relative position of an optical fiber in three dimensions are described in U.S. patent application Ser. No. 11/180,389 (filed Jul. 13, 2005) (disclosing “Fiber optic position and shape sensing device and method relating thereto”); U.S. patent application Ser. No. 12/047,056 (filed on Jul. 16, 2004) (disclosing “Fiber-optic shape and relative position sensing”); and U.S. Pat. No. 6,389,187 (filed on Jun. 17, 1998) (disclosing “Optical Fibre Bend Sensor”), which are all incorporated by reference herein in their entireties. Sensors in some examples may employ other suitable strain sensing techniques, such as Rayleigh scattering, Raman scattering, Brillouin scattering, and Fluorescence scattering. In some examples, the shape of the elongate device may be determined using other techniques. For example, a history of the distal end pose of flexible body 1016 can be used to reconstruct the shape of flexible body 1016 over the interval of time. In some examples, tracking system 1030 may optionally and/or additionally track distal end 1018 using a position sensor system 1020. Position sensor system 1020 may be a component of an EM sensor system with position sensor system 1020 including one or more conductive coils that may be subjected to an externally generated electromagnetic field. Each coil of the EM sensor system then produces an induced electrical signal having characteristics that depend on the position and orientation of the coil relative to the externally generated electromagnetic field. In some examples, position sensor system 1020 may be configured and positioned to measure six degrees of freedom, e.g., three position coordinates X, Y, Z and three orientation angles indicating pitch, yaw, and roll of a base point or five degrees of freedom, e.g., three position coordinates X, Y, Z and two orientation angles indicating pitch and yaw of a base point. Further description of a position sensor system is provided in U.S. Pat. No. 6,380,732 (filed Aug. 11, 1999) (disclosing “Six-Degree of Freedom Tracking System Having a Passive Transponder on the Object Being Tracked”), which is incorporated by reference herein in its entirety.
Flexible body 1016 may include a channel sized and shaped to receive a medical instrument. In various examples, any of the instruments and sheaths described above may be inserted through the channel of the flexible body 1016. For example, any one of the medical tools described herein may be inserted into the channel of the flexible body 1016. Medical instruments may include, for example, image capture probes, biopsy instruments, laser ablation fibers, and/or other surgical, diagnostic, or therapeutic tools. Medical instruments may be used with an imaging instrument (e.g., an image capture probe) also within flexible body 1016.
Flexible body 1016 may also house cables, linkages, or other steering controls (not shown) that extend between drive unit 1004 and distal end 1018 to controllably bend distal end 1018 as shown, for example, by broken dashed line depictions 1019 of distal end 1018. In some examples, at least four cables are used to provide independent “up-down” steering to control a pitch of distal end 1018 and “left-right” steering to control a yaw of distal end 1018. Steerable elongate devices are described in detail in U.S. patent application Ser. No. 13/274,208 (filed Oct. 14, 2011) (disclosing “Catheter with Removable Vision Probe”), which is incorporated by reference herein in its entirety.
The information from tracking system 1030 may be sent to a navigation system 1032 where it is combined with information from image processing system 1031 and/or the preoperatively obtained models to provide the operator with real-time position information. In some examples, the real-time position information may be displayed on display system 910 of
In some examples, medical instrument system 1000 may be robotic-assisted within medical system 900 of
While several examples of the present disclosure have been described and illustrated herein, those of ordinary skill in the art will readily envision a variety of other means and/or structures for performing the functions and/or obtaining the results and/or one or more of the advantages described herein, and each of such variations and/or modifications is deemed to be within the scope of the present disclosure. More generally, those skilled in the art will readily appreciate that all parameters, dimensions, materials, and configurations described herein are meant to be illustrative and that the actual parameters, dimensions, materials, and/or configurations will depend upon the specific application or applications for which the teachings of the present disclosure is/are used. Those skilled in the art will recognize, or be able to ascertain using no more than routine experimentation, many equivalents to the specific examples of the disclosure described herein. It is, therefore, to be understood that the foregoing examples are presented by way of example only and that, within the scope of the appended claims and equivalents thereto, the disclosure may be practiced other than as specifically described and claimed. The present disclosure is directed to each individual feature, system, article, material, kit, and/or method described herein. In addition, any combination of two or more such features, systems, articles, materials, kits, and/or methods, if such features, systems, articles, materials, kits, and/or methods are not mutually inconsistent, is included within the scope of the present disclosure.
This application claims priority to and benefit of U.S. Provisional Application No. 63/278,677, filed Nov. 12, 2021 and entitled “Biopsy Tool,” which is incorporated by reference herein in its entirety.
Filing Document | Filing Date | Country | Kind |
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PCT/US2022/079658 | 11/10/2022 | WO |
Number | Date | Country | |
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63278677 | Nov 2021 | US |