The present disclosure relates generally to surgical devices and systems and, more particularly, to thermal cutting-assisted tissue resection devices and systems.
Tissue resection may be performed endoscopically by inserting an endoscope into an internal surgical site and passing a tissue resection device through the endoscope and into the internal surgical site. With respect to such endoscopic tissue resection procedures, it often is desirable to distend the internal surgical site with a fluid, for example, saline, sorbitol, or glycine. The inflow and outflow of the fluid during the procedure maintains the internal surgical site in a distended state and flushes tissue and other debris therefrom to maintain a visible working space. Tissue resection may also be performed in open and/or other surgical procedures.
As used herein, the term “distal” refers to the portion that is being described which is further from an operator (whether a human surgeon or a surgical robot), while the term “proximal” refers to the portion that is being described which is closer to the operator. Terms including “generally,” “about,” “substantially,” and the like, as utilized herein, are meant to encompass variations, e.g., manufacturing tolerances, material tolerances, use and environmental tolerances, measurement variations, and/or other variations, up to and including plus or minus 10 percent. Further, any or all of the aspects described herein, to the extent consistent, may be used in conjunction with any or all of the other aspects described herein.
Provided in accordance with the present disclosure is a tissue resection device including a handpiece and an end effector assembly extending distally from the handpiece. The end effector assembly includes an outer shaft including a window defined therethrough towards a distal end thereof, an inner shaft rotationally disposed within the outer shaft, a cutting element disposed at a distal end portion of the inner shaft within the outer shaft and at least partially overlapping the window, and at least one electromagnetic induction coil surrounding at least a portion of the cutting element. The inner shaft is operably coupled to the handpiece such that the handpiece is capable of rotationally driving the inner shaft relative to the outer shaft. The cutting element is configured such that rotation of the inner shaft rotates the cutting element. The cutting element is formed at least partially from a ferromagnetic material capable of being inductively heated. The at least one electromagnetic induction coil is adapted to connect to a source of energy to produce an electromagnetic field within the at least one electromagnetic induction coil to thereby inductively heat the cutting element.
In an aspect of the present disclosure, the cutting element defines at least one cutting edge configured to cut tissue upon at least one of heating of the cutting element or rotation of the cutting element.
In another aspect of the present disclosure, the cutting element defines a screw-shaped configuration including at least one helical cutting edge.
In still another aspect of the present disclosure, the cutting element includes an elongated body and a plurality of elongated arms annularly spaced about the elongated body. Each elongated arm of the plurality of elongated arms defines at least one elongated cutting edge. In such aspects, each elongated arm of the plurality of elongated arms may define an elongated cutting edge along each side thereof.
In yet another aspect of the present disclosure, the at least one electromagnetic induction coil includes an electromagnetic induction coil disposed on or embedded within the outer shaft. Alternatively, the at least one electromagnetic induction coil may include a plurality of electromagnetic induction coils disposed about different portions of the cutting element, e.g., arms extending from a body of the cutting element.
In still yet another aspect of the present disclosure, the handpiece includes a motor and an output coupler connected to the motor and the end effector assembly includes an input coupler connected to the inner shaft. The input coupler is configured to engage the output coupler to enable the motor to drive rotation of the inner shaft.
In another aspect of the present disclosure, the end effector assembly is configured to releasably engage the handpiece to thereby releasably couple the output and input couplers with one another.
In yet another aspect of the present disclosure, the handpiece is adapted to connect to a vacuum source to establish suction through the outer shaft, thereby facilitating drawing tissue through the window and into the outer shaft for cutting with the cutting element.
In still another aspect of the present disclosure, the cutting element is formed from a ferromagnetic material.
Another tissue resection device provided in accordance with the present disclosure includes a handpiece and an end effector assembly extending distally from the handpiece. The end effector assembly includes an outer shaft including a window defined therethrough towards a distal end thereof, an electromagnetic induction coil disposed on or embedded within the outer shaft, an inner shaft rotationally disposed within the outer shaft and operably coupled to the handpiece such that the handpiece is capable of rotationally driving the inner shaft relative to the outer shaft, and a cutting element disposed at a distal end portion of the inner shaft within the outer shaft and at least partially overlapping the window and the electromagnetic induction coil. The cutting element is configured such that rotation of the inner shaft rotates the cutting element. The electromagnetic induction coil is adapted to connect to a source of energy to produce an electromagnetic field within the outer shaft. The cutting element is formed at least partially from a ferromagnetic material capable of being inductively heated by the electromagnetic field produced by the electromagnetic induction coil.
In an aspect of the present disclosure, the cutting element defines a screw-shaped configuration including at least one helical cutting edge.
In another aspect of the present disclosure, the handpiece includes a motor and an output coupler connected to the motor, the end effector assembly includes an input coupler connected to the inner shaft, and the input coupler is configured to engage the output coupler to enable the motor to drive rotation of the inner shaft.
In another aspect of the present disclosure, the handpiece is adapted to connect to a vacuum source to establish suction through the outer shaft, thereby facilitating drawing tissue through the window and into the outer shaft for cutting with the cutting element.
Still another tissue resection device provided in accordance with the present disclosure includes a handpiece and an end effector assembly extending distally from the handpiece. The end effector assembly includes an outer shaft including a window defined therethrough towards a distal end thereof, an inner shaft rotationally disposed within the outer shaft and operably coupled to the handpiece such that the handpiece is capable of rotationally driving the inner shaft relative to the outer shaft, a cutting element disposed at a distal end portion of the inner shaft within the outer shaft and at least partially overlapping the window, and a plurality of electromagnetic induction coils. The cutting element is configured such that rotation of the inner shaft rotates the cutting element. The cutting element is formed at least partially from a ferromagnetic material capable of being inductively heated and includes a body having a plurality of arms disposed annularly thereabout. Each electromagnetic induction coil of the plurality of electromagnetic induction coils is disposed about an arm of the plurality of arms. Each electromagnetic induction coil is adapted to connect to a source of energy to produce an electromagnetic field therewithin to thereby inductively heat the corresponding arm of the cutting element.
In an aspect of the present disclosure, each arm of the plurality of arms defines an elongated cutting edge along each side thereof.
In another aspect of the present disclosure, the handpiece includes a motor and an output coupler connected to the motor, the end effector assembly includes an input coupler connected to the inner shaft, and the input coupler is configured to engage the output coupler to enable the motor to drive rotation of the inner shaft.
In another aspect of the present disclosure, the handpiece is adapted to connect to a vacuum source to establish suction through the outer shaft, thereby facilitating drawing tissue through the window and into the outer shaft for cutting with the cutting element.
Various aspects and features of the present disclosure are described hereinbelow with reference to the drawings wherein like numerals designate identical or corresponding elements in each of the several views.
Referring to
With additional reference to
Cable 170 electrically couples handpiece 112 and control console 130 with one another and, more specifically: electrically couples control console 130 with motor 120 to power and control operation of motor 120; electrically couples control console 130 with a storage device(s), e.g., a microchip(s) (not explicitly shown), associated with handpiece 112 and/or end effector assembly 114 to enable communication of, for example, identification, setting, and control information therebetween; and electrically couples end effector assembly 114 with a generator 195 disposed within control console 130 via electrical connection assemblies 122, 123 to enable selective energization of end effector assembly 114 and control of the energization thereof, as detailed below. In aspects, cable 170 is fixedly attached to handpiece 112 and releasably couplable with control console 130, although other configurations are also contemplated. As an alternative to the above-detailed configuration, motor 120 may be remotely disposed, e.g., within control console 130 and, in such aspects, cable 170 may mechanically or electromechanically couple motor 120 with handpiece 112. Further, manually-powered actuation, pneumatically-powered actuation, and/or other actuation configurations aside from an electric motor are also contemplated, whether disposed at handpiece 112 or remotely, e.g., at control console 130.
End effector assembly 114 includes a proximal hub 124 configured to releasably engage housing 116 of handpiece 112 to releasably mechanically engage end effector assembly 114 with handpiece 112. End effector assembly 114 further includes an outer shaft 126 extending distally from proximal hub 124 and an inner shaft 128 extending through outer shaft 126. A proximal end portion of inner shaft 128 extends into proximal hub 124 wherein an input coupler 129 is engaged with inner shaft 128. Input coupler 129 is configured to operably couple to output coupler 118 of handpiece 112 when proximal hub 124 is engaged with housing 116 such that, when motor 120 is activated to drive rotation of output coupler 118, input coupler 129 is driven to rotate in a corresponding manner to thereby rotate inner shaft 128 within and relative to outer shaft 126. Output and input couplers 118, 129, respectively, may be directly coupled to achieve an output to input ratio of 1:1, e.g., wherein the rotation output from output coupler 118 equals the rotation input to input coupler 129, or may be amplified or attenuated, e.g., using suitable gearing (not shown), to achieve an output to input ratio of greater than or less than 1:1. Inner shaft 128 is coaxially disposed on a longitudinal axis of outer shaft 126 and is configured to rotate about the longitudinal axis. As an alternative to or in addition to rotation of inner shaft 128 relative to outer shaft 126, inner shaft may be configured to reciprocate within and relative to outer shaft 126, e.g., via a cam-follower and helical track mechanism or other suitable mechanism operably coupled between input coupler 129 and inner shaft 128.
Outer shaft 126, as noted above, extends distally from proximal hub 124 and, in some configurations, is stationary relative to proximal hub 124, although other configurations are also contemplated. Outer shaft 126 may define a window 140 through a portion of a side and/or end wall thereof towards a distal end thereof to provide access to cutting element 150 which is rotatably disposed within outer shaft 126. At least a portion of the edge 142 of outer shaft 126 that extends about and defines window 140 may be a sharpened cutting edge and/or a dull edge. Further, in aspects, outer shaft 126 and inner shaft 128 may be flexible, e.g., steerable, malleable, pre-bent, or otherwise configured to define one or more non-linear shapes to better position the distal end portions thereof for resecting tissue.
Continuing with reference to
Coil 146 is configured to electrically couple to an electrical connection assembly 123 of end effector assembly 114. Electrical connection assembly 123, more specifically, may include a pair of electrical connectors 123a, 123b that are electrically isolated from one another and adapted to connect to first and second end portions of coil 146, e.g., via suitable connectors or conductors extending through outer shaft 126, embedded within outer shaft 126, formed on outer shaft 126, etc. Electrical connection assembly 123, in turn, is configured to electrically couple to electrical connection assembly 122 of handpiece 112 upon engagement of end effector assembly 114 with handpiece 112. Electrical connection assembly 122 may include a pair of electrical connectors 122a, 122b that are electrically isolated from one another and adapted to connect to electrical connectors 123a, 123b, respectively, to enable connection of different potentials of electrical energy to the first and second end portions of coil 146 to enable energization thereof. Connectors 122a, 122b may extend from handpiece 112 through cable 170 to connect to generator 195 of control console 130, thus connecting coil 146 to a source of energy.
Cutting element 150, as noted above, is rotatably disposed within outer shaft 126, and is positioned to at least partially overlap with window 140 defined through outer shaft 126. Cutting element 150 may extend the same length as coil 146, may be shorter than and within the longitudinal bounds of coil 146, or may extend beyond coil 146 in proximal and/or distal directions. Cutting element 150 may form part of, the entirety of, or may be distinct from and coupled to inner shaft 128. Regardless of the particular configuration, inner shaft 128 is rotatable within and relative to outer shaft 126 to thereby rotate cutting element 150 within and relative to outer shaft 126. Cutting element 150, as illustrated, defines a screw-shaped configuration including a body 152 having one or more helical-shaped cut-outs 153 that define one or more helical-shaped cutting edges 154. Cutting element 150 may alternatively define any other suitable configuration to facilitate tissue resection including one or more cutting edges and/or dull edges such as, for example: a corkscrew-shaped configuration; a hook-shaped configuration; a body including a plurality of barbs, projections, or other sharp or blunt cutting features; a body defining one or more cutting apertures, slots, and/or other openings, etc., combinations of the above, or any other suitable configuration. Cutting element 150 includes a distal end portion 155 at the distal end of body 152 that is rotatably received within a hub 158 disposed on an interior surface of outer shaft 126, e.g., an interior distal surface of outer shaft 126, to translationally fix and rotationally support cutting element 150 within outer shaft 126, although in other configurations distal end portion 155 of cutting element 150 is not supported by or in contact with the interior distal surface of outer shaft 126.
Cutting element 150 may be formed from a ferromagnetic material and, in aspects, a ferromagnetic material, e.g., a metal, that is inductively heated with relatively high efficiency as compared to the inductive heating efficiency of outer shaft 126 (in configurations where outer shaft 126 is electromagnetic). In aspects, cutting element 150 is formed from a ferromagnetic material such that when an electromagnetic field is applied, e.g., from coil 146, the cutting element 150 is heated up to its Curie point (thus providing automatic, Curie-point temperature control).
Referring still to
Outflow tubing 180 includes a distal end 184 configured to couple to handpiece 112 and a proximal end 186 configured to couple to collection vessel 160. More specifically, handpiece 112 defines an internal conduit 188 that couples distal end 184 of outflow tubing 180 with the interior of outer shaft 126 in fluid communication therewith such that fluid, cut tissue, and debris drawn into outer shaft 126 may be suctioned, under vacuum, e.g., from a vacuum pump 139 of control console 130, through end effector assembly 114, handpiece 112, and outflow tubing 180, to collection vessel 160.
Referring back to
As an alternative or in addition to establishing suction through interior of outer shaft 126 via vacuum pump 139, flow can be created via a pressure differential between the interior and exterior of outer shaft 126 via by pumping fluid into the uterus (or other body cavity) to establish a positive intrauterine pressure. This may cause tissue, fluid, and/or debris to pass through window 140 and into outer shaft 126. Further, this enables tissue resection upon pressing the distal end portion of outer shaft 126 into contact with tissue, e.g., against the uterine wall or polyp, and subsequent removal of the tissue through window 140 and into outer shaft 126 such that resected tissue, e.g., diseased tissue such as cancerous cells, are removed from the uterus.
Continuing with reference to
Referring again to
With reference to
Cutting element 450 includes an elongated body 452 include a plurality of elongated arms 456 spaced-apart about the annular periphery of elongated body 452 and extending along at least a portion of a length thereof. Although four (4) equally-spaced arms 456 are illustrated, any other suitable arrangement in number and/or spacing may provided. The spacing of arms 456 defines an elongated recess 459 between each pair of adjacent arms 456. Each arm 456 further defines opposing longitudinal cutting edges 457 at the free end thereof such that each elongated recess 459 is surrounded on either side thereof via an elongated cutting edge 457. Arms 456 may taper in thickness from the free ends thereof inwardly towards elongated body 452 to define a neck 462 between the free end of each arm 456 and elongated body 452. Cutting element 450 may be formed from similar materials and/or in a similar manner as detailed above with respect to cutting element 150 (
Continuing with reference to
In use, similarly as detailed above with respect to cutting element 150 (
Turning to
Robotic surgical system 500 generally includes a plurality of robot arms 502, 503; a control device 504; and an operating console 505 coupled with control device 504. Operating console 505 may include a display device 506, which may be set up in particular to display three-dimensional images; and manual input devices 507, 508, by means of which a person, e.g., a surgeon, may be able to telemanipulate robot arms 502, 503 in a first operating mode. Robotic surgical system 500 may be configured for use on a patient 513 lying on a patient table 512 to be treated in a minimally invasive manner. Robotic surgical system 500 may further include a database 514, in particular coupled to control device 504, in which are stored, for example, pre-operative data from patient 513 and/or anatomical atlases.
Each of the robot arms 502, 503 may include a plurality of members, which are connected through joints, and a mounted device which may be, for example, a surgical tool “ST.” One or more of the surgical tools “ST” may be end effector assembly 114 of surgical device 110 (
Robot arms 502, 503 may be driven by electric drives, e.g., motors, connected to control device 504. Control device 504, e.g., a computer, may be configured to activate the motors, in particular by means of a computer program, in such a way that robot arms 502, 503, and, thus, their mounted surgical tools “ST” execute a desired movement and/or function according to a corresponding input from manual input devices 507, 508, respectively. Control device 504 may also be configured in such a way that it regulates the movement of robot arms 502, 503 and/or of the motors.
While several aspects of the disclosure have been shown in the drawings, it is not intended that the disclosure be limited thereto, as it is intended that the disclosure be as broad in scope as the art will allow and that the specification be read likewise. Therefore, the above description should not be construed as limiting, but merely as examples of particular aspects. Those skilled in the art will envision other modifications within the scope and spirit of the claims appended hereto.
This application claims the benefit of, and priority to, U.S. Provisional Patent Application No. 63/081,387 filed on Sep. 22, 2020. The entire contents of each of these applications is hereby incorporated herein by reference.
Number | Date | Country | |
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63081387 | Sep 2020 | US |