WO2025114879A1

WO2025114879A1 - Electrosurgical instruments and systems having different modes

Info

Publication number: WO2025114879A1
Application number: PCT/IB2024/061851
Authority: WO
Inventors: Graham J. BARRETT; Daniel W. MERCIER; Hayden W. May; Matthew A. ROBY
Original assignee: Covidien LP
Current assignee: Covidien LP
Priority date: 2023-11-29
Filing date: 2024-11-26
Publication date: 2025-06-05
Anticipated expiration: 2026-05-29

Abstract

A surgical system includes a housing, a shaft extending from the housing, an end effector assembly coupled to the shaft, and at least one mode selection assembly. The end effector assembly includes first and second jaw members at least one of which is movable for grasping tissue therebetween. One or both jaw members is configured to transmit energy to the grasped tissue for sealing the grasped tissue and one or both of the jaw members includes an energizable cutting element configured to transmit energy to tissue for cutting tissue. The at least one mode selection is activatable in a first manner to switch between modes of a first category associated with energizing the cutting element and in a second manner different from the first manner to switch between modes of a second, different category associated with energizing the cutting element.

Description

ELECTRO SURGICAL INSTRUMENTS AND SYSTEMS HAVING DIFFERENT MODES

CROSS-REFERENCE TO RELATED APPLICATION

[0001] This application claims priority to U.S. Provisional Patent Application No. 63/604,165, filed November 29, 2023, which is incorporated herein by reference in its entirety.

FIELD

[0002] The present disclosure relates to electrosurgery and, more particularly, to electrosurgical instruments and systems having different modes.

BACKGROUND

[0003] A surgical forceps is a pliers-like surgical instrument that relies on mechanical action between its jaw members to grasp, clamp, and constrict tissue. Energy-based surgical forceps utilize both mechanical clamping action and energy, e.g., monopolar Radio Frequency (RF), bipolar RF, micro wave, ultrasonic, light, thermal, combinations thereof, and/or other suitable energy, to heat tissue to thereby treat, e.g., seal, tissue grasped between jaw members of the energybased surgical forceps. Typically, once tissue is sealed, the surgeon has to accurately sever the sealed tissue. Accordingly, many energy-based surgical forceps are designed to incorporate a knife that is advanced between the jaw members to cut the sealed tissue. As an alternative to a mechanical knife, an energy-based tissue cutting element may be provided to statically or dynamically cut tissue using energy, e.g., the same or different energy as used for sealing the tissue. Such energy-based tissue cutting elements may also be utilized to cut or otherwise treat unsealed tissue.

SUMMARY

[0004] As used herein, the term “distal” refers to the portion that is being described which is farther from an operator (whether a human user (surgeon, nurse, etc.) 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, design variations, and/or other variations, up to and including plus or minus 10 percent. Further, to the extent consistent, any or all of the aspects detailed herein may be used in conjunction with any or all of the other aspects detailed herein. [0005] Provided in accordance with the present disclosure is a surgical system including a housing, a shaft extending distally from the housing, an end effector assembly coupled to a distal end of the shaft, and at least one mode selection assembly. The end effector assembly includes first and second jaw members. At least one of the first or second jaw members is movable between a spaced apart position and an approximated position for grasping tissue therebetween. The first and second jaw members are configured to transmit energy to the grasped tissue for sealing the grasped tissue. At least one of the first or second jaw members includes an energizable cutting element configured to transmit energy to tissue for cutting tissue. The at least one mode selection assembly is activatable in a first manner to switch between modes of a first category of modes associated with energizing the cutting element for cutting tissue and in a second manner different from the first manner to switch between modes of a second, different category of modes associated with energizing the cutting element for cutting tissue.

[0006] In an aspect of the present disclosure, one of the first or second categories of modes is an operational mode category. The modes of the operational mode category may include, in aspects, an automatic cut mode, wherein the cutting element is energized to cut tissue automatically after tissue sealing is completed, and a manual cut mode, wherein user input is required to energize the cutting element to cut tissue.

[0007] In another aspect of the present disclosure, one of the first or second categories of modes is an energy mode category. The modes of the energy mode category may include, in aspects, a first energy mode and a second energy mode wherein at least one of an energy algorithm, an energy delivery parameter, or an energy feedback threshold differs between the first and second energy modes.

[0008] In another aspect of the present disclosure, the at least one mode selection assembly includes first and second buttons. The first manner includes activating only one of the first or second buttons and the second manner includes activating both of the first and second buttons.

[0009] In yet another aspect of the present disclosure, the at least one mode selection assembly includes a first mode selection assembly that is selectively activatable in the first manner and a second mode selection assembly that is selectively activatable in the second manner.

[0010] In still another aspect of the present disclosure, one of the first or second mode selection assemblies includes a button, wherein depression of the button activates the one of the first or second mode selection assemblies. Alternatively or additionally, one of the first or second mode selection assemblies includes a slider, wherein sliding of the slider activates the one of the first or second mode selection assemblies. Alternatively or additionally, one of the first or second mode selection assemblies includes a rocker, wherein rocking of the rocker activates the one of the first or second mode selection assemblies. Alternatively or additionally, one of the first or second mode selection assemblies includes a toggle, wherein pushing the toggle activates the one of the first or second mode selection assemblies.

[0011 ] In still yet another aspect of the present disclosure, one or more of the at least one mode selection assemblies is disposed on the housing.

[0012] In another aspect of the present disclosure, the at least one mode selection assembly is disposed on the housing and includes an indicator configured to visually indicate at least one of an implemented mode of the first category of modes or an implemented mode of the second category of modes.

[0013] In another aspect of the present disclosure, an indicator is disposed on the housing and configured to visually indicate at least one of an implemented mode of the first category of modes or an implemented mode of the second category of modes.

[0014] In still another aspect of the present disclosure, one or more of the at least one mode selection assemblies is configured to produce a tactile and/or audible output in response to at least one of switching between modes of the first category of modes or switching between modes of the second category of modes.

[0015] In yet another aspect of the present disclosure, the system further includes a surgical generator configured to supply the energy to the at least one of the first and second jaw members for sealing the grasped tissue and/or to supply the energy to the cutting element for cutting tissue. [0016] In another aspect of the present disclosure, one or more of the at least one mode selection assembly is associated with a display screen of the surgical generator. Further, at least one of the first manner or the second manner may include interacting with the display screen of the surgical generator. Additionally or alternatively, an implemented mode of the first category of modes and/or an implemented mode of the second category of modes is displayed on the display screen of the surgical generator.

[0017] In still yet another aspect of the present disclosure, the system further includes an activation assembly and/or a trigger assembly. The activation assembly is configured such that activation of the activation assembly initiates the transmission of the energy for sealing. The trigger assembly is configured such that activation of the trigger assembly initiates the transmission of the energy for cutting.

BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and other aspects and features of the present disclosure will become more apparent in view of the following detailed description when taken in conjunction with the accompanying drawings wherein like reference numerals identify similar or identical elements. [0019] FIG. 1 is a side view of an electrosurgical system in accordance with the present disclosure including an electrosurgical forceps and an electrosurgical generator;

[0020] FIG. 2A is an enlarged, perspective view of an end effector assembly of the electrosurgical forceps of the system of FIG. 1;

[0021] FIGS. 3 A and 3B are left and right side views, respectively, of a housing of the electrosurgical forceps of the system of FIG. 1 including user interface features in accordance with the present disclosure;

[0022] FIGS. 4A and 4B are top views of a mode selection button including an indicator providing first and second outputs, respectively, corresponding to first and second modes;

[0023] FIG. 5 is a side view of the housing of the electrosurgical forceps of the system of FIG. 1 including another indicator in accordance with the present disclosure;

[0024] FIGS. 6A and 6B are side views of the housing of the electrosurgical forceps of the system of FIG. 1 including a user interface feature in accordance with the present disclosure disposed in first and second conditions, respectively, corresponding to first and second modes;

[0025] FIGS. 7A and 7B are side views of another user interface features in accordance with the present disclosure configured for use with the electrosurgical forceps of the system of FIG. 1 and shown in first and second conditions, respectively, corresponding to first and second modes;

[0026] FIGS. 8 A and 8B are front views of the housing of the electrosurgical forceps of the system of FIG. 1 including still another user interface feature in accordance with the present disclosure shown in first and second conditions, respectively, corresponding to first and second modes;

[0027] FIGS. 9A and 9B are screenshots of a graphical user interface (GUI) of the electrosurgical generator of the system of FIG. 1 indicating first and second modes, respectively; and [0028] FIGS. 10A and 10B are screenshots of portions of a graphical user interface (GUI) configured for use with the electrosurgical generator of the system of FIG. 1 indicating first and second modes, respectively.

DETAILED DESCRIPTION

[0029] The present disclosure provides electrosurgical instruments and systems having different modes and user interface features to facilitate switching between modes and/or alerting a user as to the implemented mode(s). Although described herein with respect to modes associated with energy-based tissue cutting in an electrosurgical forceps, the present disclosure is equally applicable for use with any other suitable surgical instrument and/or for activating and/or alerting any other suitable modes.

[0030] Referring to FIG. 1 , an electrosurgical system 2 provided in accordance with the present disclosure includes an electrosurgical forceps 10 and an electrosurgical generator 18. Forceps 10 includes a housing 20, a handle assembly 30, a rotating assembly 40, a trigger assembly 50, an activation assembly 60, an end effector assembly 70, a jaw drive assembly 80, and a mode selection assembly 90. End effector assembly 70 includes first and second jaw members 72, 74, at least one of which is movable relative to the other (e.g., about pivot pin 78 (FIG. 2) or other suitable structure(s)) between a spaced apart position and an approximated position to grasp tissue to enable sealing and/or dividing of the grasped tissue. End effector assembly 70 further includes an energybased cutting element 110 such as, for example, a cutting electrode, operably coupled to trigger assembly 50 to enable, in one or more operational modes, the selective supply of energy to cutting element 110 to cut tissue grasped between jaw members 72, 74 or otherwise in contact with cutting element 110.

[0031] Forceps 10 further includes an outer shaft 12 that has a proximal end portion operatively engaged to a body 21 of housing 20 and a distal end portion operably engaged to end effector assembly 70. Forceps 10 also includes an electrosurgical cable 14 configured to connect forceps 10 to generator 18 to enable generator 18 to communicate with forceps 10 and control the supply of electrosurgical energy to end effector assembly 70 of forceps 10 for sealing tissue grasped between first and second jaw members 72, 74 and for cutting tissue disposed between first and second jaw members 72, 74 or otherwise in contact with cutting element 110 of end effector assembly 70 (e.g., in accordance with an implemented mode). [0032] Continuing with reference to FIG. 1, handle assembly 30 includes a fixed handle 32 and a movable handle or lever 34. Fixed handle 32 is integrally associated with housing 20, depending from body 21 thereof, and lever 34 is movable relative to fixed handle 32 to actuate jaw drive assembly 80. More specifically, lever 34 is coupled to housing 20, e.g., pivotably secured to housing 20 via a pivot 35, and jaw drive assembly 80 such that actuation of lever 34 moves either or both of jaw members 72, 74 between the spaced apart and approximated positions. Jaw drive assembly 80 may include one or more linkages 82, a carriage 84, a compression spring 86, and a drive shaft 88. Lever 34 couples to linkage(s) 82 and linkage(s) 82, in turn, cooperate to move carriage 84 against compression spring 86 in response to actuation of lever 34 towards fixed handle 32. Movement of carriage 84 distally against compression spring 86, in turn, regulates translation of drive shaft 88 through outer shaft 12 and relative to end effector assembly 70 to move either or both of jaw members 72, 74 relative to one another to grasp tissue between jaw members 72, 74 and regulate the closure force applied to tissue grasped between jaw members 72, 74.

[0033] More specifically, and with additional reference to FIG. 2, movement of carriage 84 distally against compression spring 86 initially urges compression spring 86 to translate to thereby translate drive shaft 88 through shaft 12 to drive relative movement of cam pin 76 through cam slots 77, 79 defined within respective first and second jaw members 72, 74 to urge jaw member 72 to pivot about pivot pin 78 and relative to jaw member 74 from the spaced apart position to the approximated position to grasp tissue between first and second jaw members 72, 74 and apply a closure force to the grasped tissue.

[0034] Upon reaching a threshold closure force applied to tissue grasped between first and second jaw members 72, 74, further movement of carriage 84 against compression spring 86, e.g., in response to further actuation of lever 34 towards fixed handle 32, compresses compression spring 86 rather than translating compression spring 86 (due to the resistive force applied by tissue inhibiting further closure of jaw members 72, 74) such that drive shaft 88 and, thus, first and second jaw members 72, 74 are maintained in position grasping tissue therebetween. In this manner, the closure force applied to tissue grasped between jaw members 72, 74 is regulated to maintain a closure force or closure force within a closure force range. In aspects, a return spring (not shown) is provided to bias lever 34 away from fixed handle 32, thereby biasing jaw members 72, 74 towards the spaced apart position. [0035] In order to move drive relative movement of cam pin 76 through cam slots 77, 79, drive shaft 88 may be translationally fixed to cam pin 76 and shaft 12 translationally fixed to pivot pin 78 such that translation of drive shaft 88 moves cam pin 76 relative to jaw members 72, 74 (and, thus, cam slots 77, 79) to thereby drive relative movement of cam pin 76 through cam slots 77, 79 to pivot first jaw member 72 towards second jaw member 74 to grasp tissue therebetween and apply the closure force to the grasped tissue. Alternatively, drive shaft 88 may be translationally fixed to pivot pin 78 and shaft 12 translationally fixed to cam pin 76 such that translation of drive shaft 88 moves jaw members 72, 74 (and, thus, cam slots 77, 79) relative to cam pin 76 to thereby drive relative movement of cam pin 76 through cam slots 77, 79 to pivot first jaw member 72 towards second jaw member 74 to grasp tissue between first and second jaw members 72, 74 and apply the closure force to the grasped tissue. However, other suitable closure mechanisms are also contemplated, e.g., wherein rotation of a drive element approximates jaw members 72, 74.

[0036] Although end effector assembly 70 is described as a unilateral assembly, e.g., wherein second jaw member 74 is fixed relative to shaft 12 and first jaw member 72 is pivotable relative to second jaw member 74 and shaft 12, a bilateral assembly, e.g., wherein both first and second jaw members 72, 74 are pivotable relative to one another and shaft 12, is also contemplated. Further, instead of a cam and slot mechanism (as shown and detailed above), other suitable configurations for driving relative movement of either or both of jaw members 72, 74 are also contemplated such as, for example using one or more linkages, a lead screw, a slidable flangeaperture engagement, or any other suitable mechanism.

[0037] Continuing with reference to FIGS. 1 and 2, each jaw member 72, 74 of end effector assembly 70 includes an electrically conductive tissue contacting surface 73, 75. Jaw members

72, 74 are configured to grasp tissue between electrically conductive tissue contacting surface 73, 75 in the approximated position thereof. Electrically conductive tissue contacting surfaces 73, 75 are adapted to connect to generator 18, e.g., via suitable electrical lead wires, electrically conductive structures, or combinations thereof extending through shaft 12, housing 20, and electrosurgical cable 14, to enable energization of electrically conductive tissue contacting surface

73, 75 with, for example, Radio Frequency (RF) energy at different potentials (thus defining a bipolar configuration) to enable the conduction of the RF energy between electrically conductive tissue contacting surface 73, 75 and through tissue grasped therebetween to seal the tissue. In addition to supplying energy, generator 18 is configured to monitor properties, e.g., current, voltage, power, tissue impedance, changes thereof, etc., associated with the supply of energy to implement feedback-based control of the tissue sealing process and/or to determine when tissue sealing is complete. For example, and without limitation, generator 18 may monitor tissue impedance and determine that tissue sealing is complete when a target end impedance is reached. Other suitable energy modalities, e.g., monopolar RF, ultrasonic, micro wave, thermal, light, etc. are also contemplated, as are combinations thereof.

[0038] Either or both jaw member 72, 74 may further include one or more stop members 71 disposed on or otherwise associated with either or both tissue-contacting surfaces 73, 75 to maintain a minimum gap distance or gap distance within a minimum gap distance range between tissue contacting surfaces 73, 75 when jaw members 72, 74 are disposed in a fully approximated position, thus inhibiting electrical shorting. Stop member(s) 71 may be insulative, partly insulative, and/or electrically isolated from either or both tissue contacting surfaces 73, 75.

[0039] As noted above, end effector assembly 70 further includes an energy-based cutting element 110. Cutting element 110 may be configured as a cutting electrode configured to conduct RF energy to tissue or may be configured in any other suitable manner to deliver any additional or alternative form of energy, e.g., ultrasonic, thermal, light, micro wave, combinations thereof, etc., to cut tissue in contact with or otherwise in close proximity to cutting element 110. In RF configurations, cutting element 110 may be energized with either or both of tissue contacting surfaces 73, 75 at different potentials to conduct energy between cutting element 110 and either or both of tissue contacting surfaces 73, 75 and through tissue disposed therebetween to cut tissue. Alternatively, cutting element 110 may be energized to conduct energy to tissue to cut tissue while a remote return electrode (not shown), e.g., a return pad, is utilized to return the energy to generator 18 to complete the electrosurgical circuit. Other electrical pathway configurations between cutting element 110 and one or more return components are also contemplated.

[0040] Cutting element 110 may be disposed within a longitudinally-extending slot 112 defined through tissue contacting surface 75 of jaw member 74 with an insulator (not shown) disposed between cutting electrode 110 and tissue contacting surface 75, thus maintaining electrical isolation between cutting element 110 and tissue contacting surface 75. Further, cutting element 110 may be positioned to oppose an insulative member (not shown) disposed on or extending through tissue contacting surface 73 of jaw member 72 in the approximated position of jaw members 72, 74 to likewise maintain electrical isolation between cutting element 110 and tissue contacting surface 73. However, other configurations are also contemplated, including configurations wherein cutting element 110 is electrically coupled to one of tissue contacting surface 73, 75.

[0041] Referring again to FIG. 1, rotating assembly 40 includes a rotation wheel 42 engaged with outer shaft 12 and rotatably disposed about a distal nose 24 of body 21 of housing 20 to enable a user to manually control the orientation of outer shaft 12 and thus, end effector assembly 70, relative to housing 20, e.g., by manipulating rotation wheel 42. In aspects, rotating assembly 40 is infinitely rotatable in either direction to similarly rotate end effector assembly 70 relative to housing 20. Alternatively, rotating assembly 40 may have a defined range of motion.

[0042] Trigger 52 of trigger assembly 50 is coupled to an underlying electrical switch 54 of trigger assembly 50 that, in turn, is operably connected to generator 18 and configured, in response to actuation of trigger 52 (in at least one operational mode), to signal generator 18 to initiate the supply of energy to cutting element 110 to energize cutting element 110 (alone or in conjunction with other components) for treating, e.g., cutting, tissue. Generator 18, more specifically, may be configured to read an output, e.g., the presence of a resistance, voltage, current, etc. and/or a value of the resistance, voltage, current, etc., established by the state or change in state of electrical switch 54 of trigger assembly 50 to thereby detect the state of electrical switch 54 and, thus, to detect whether the user has activated trigger 52. For example, generator 18 may read the first state of electrical switch 54 as corresponding to a deactivated state and the second state of electrical switch 54 as corresponding to an activated state. In aspects, trigger 52 is biased towards an unactivated position and, thus, electrical switch 54 is biased towards the deactivated state.

[0043] Activation assembly 60 is disposed within fixed handle 32 of housing 20 and is configured, in response to sufficient actuation of lever 34, to signal generator 18 to initiate the supply of energy to first and second jaw members 72, 74, e.g., for sealing tissue. Activation assembly 60 includes an activation button 62 including an underlying activation switch 64 mounted on a printed circuit board (PCB) 65. Activation button 62 is operably positioned relative to lever 34 such that, upon sufficient actuation of lever 34, lever 34 contacts activation button 62 to move activation button 62 from an unactivated position to an activated position to thereby transition underlying electrical switch 64 from a first state (e.g., an OFF state) to a second state (e.g., an ON state). Electrical switch 64, in turn, is adapted to electrically connect to generator 18, e.g., via one or more electrical lead wires extending from electrical switch 64 through housing 20 and electrosurgical cable 14 to enable communication of the state of electrical switch 64 to generator 18. Generator 18, more specifically, may be configured to read an output, e.g., the presence of a resistance, voltage, current, etc. and/or a value of the resistance, voltage, current, etc., established by the state or change in state of the electrical switch 64 to thereby detect the state of electrical switch 64 and, thus, to detect whether the user has activated activation button 62. For example, generator 18 may read the first state of electrical switch 64 as corresponding to a deactivated state and the second state of electrical switch 64 as corresponding to an activated state. In aspects, activation button 62 is biased towards an unactivated position and, thus, electrical switch 64 is biased towards the deactivated state.

[0044] Generator 18 may include, for example, sensor circuitry, a controller, a high voltage power supply (“HVPS”) and first and second output stages. The HVPS provides high voltage power to the first and second output stages which convert the high voltage power into RF electrosurgical energy for delivery to tissue contacting surfaces 73, 75 and cutting element 110 of end effector assembly 70 for sealing and cutting tissue, respectively. The controller includes a processor operably connected to a non-transitory computer-readable storage medium such as a memory. The processor is operably connected to the HVPS and/or the output stages allowing the processor to control the output of generator 18, e.g., in accordance with the implemented mode(s) of operation and/or feedback data. The sensor circuitry, more specifically, enable the processor of generator 18 to detect the implemented mode(s) of forceps 10, as detailed below, and also allow for determining one or more parameters, e.g., tissue impedance, power, current, voltage, etc., associated with the supply of energy to tissue contacting surfaces 73, 75 and/or cutting element 110 for feedback-based control thereof.

[0045] Continuing with reference to FIG. 1, electrosurgical forceps 10 is configured for use in, and to switch between, two or more different operational modes associated with the energization of cutting element 110 to cut tissue. Further, in aspects, electrosurgical forceps 10 is configured for use in, and to switch between, two or more energy modes associated with the energization of cutting element 110 to cut tissue. Each operational mode may have a subset of energy modes associated therewith (including energy modes exclusive to that operation mode and/or universal energy modes) and/or each energy mode may have a subset of operational modes associated therewith (including operational modes exclusive to that energy mode and/or universal operational modes). Alternatively, the operational and energy modes may be utilized in any suitable combination.

[0046] Operational modes associated with the energization of cutting element 110, as utilized herein, refer to modes that dictate what requirements are required to initiate the energization of cutting element 110 to cut tissue. These requirements may include, for example, activation of trigger 52, determination (e.g., by generator 18) that tissue sealing is complete, detection (e.g., by generator 18) of tissue in contact with cutting element 110, determination that jaw members 72, 74 are sufficiently approximated (e.g., using a jaw position or angle sensor (not shown)), determination that jaw members 72, 74 are in the spaced apart position (e.g., using a jaw position or angle sensor (not shown)), combinations thereof, etc.

[0047] In aspects, electrosurgical forceps 10 is configured for use in, and to switch between, at least two operational modes: a manual cut mode and an automatic cut mode. In the manual cut operational mode, activation of trigger 52 (and/or other suitable user interface feature of forceps 10 or generator 18) is required to initiate the energization of cutting element 110 to cut tissue. Other events may also be required. Thus, regardless of particular conditions (e.g., whether tissue has been previously sealed, whether jaw members 72, 74 are disposed in the approximated position, etc.), manual input, e.g., activation of trigger 52, is required to energize cutting element 110 in the manual cut operational mode. It is noted that, while manual input is required to energize cutting element 110 in the manual cut operational mode, manual input alone, in aspects, may not be sufficient to energize cutting element 110. That is, in aspects, other requirements (e.g., the detection of tissue in contact with cutting element 110, the determination that tissue has been sealed, etc.), in addition to manual input, must be met to enable energization of cutting element 110.

[0048] In the automatic cut operational mode, energization of cutting element 110 is affected in response to satisfaction of one or more requirements without the need for intervening manual input. For example, in the automatic cut operational mode, cutting element 110 is automatically energized to cut tissue grasped between jaw members 72, 74 after (e.g., immediately or after a predetermined delay) generator 18 determines that tissue grasped between jaw members 72, 74 has been sealed (e.g., based on tissue impedance reaching an end impedance). The tissue sealing may be in response to user activation of activation button 62 of activation assembly 60 (via lever 34), via activation of a corresponding button (virtual or physical) on generator 18, or in any other suitable manner. Additional requirements for automatically energizing cutting element 110 are also contemplated, e.g., requiring jaw members 72, 74 to be maintained in the approximated position after tissue sealing. In the automatic cutting mode, generator 18 may be configured to ignore any output from the activation of trigger 52 or to take another action in response to the activation of trigger 52.

[0049] Energy modes associated with the energization of cutting element 110, as utilized herein, refer to modes that dictate the properties and/or parameters of the energy delivered to cutting element 110 (and/or other components) to cut tissue. For example, different energy modes may deliver different modalities of energy (monopolar RF, bipolar RF, thermal, ultrasonic, light, microwave, etc.), different combinations of energy modalities to cutting element 110 (and/or other components), and/or between cutting element 110 and different return electrodes (e.g., a return pad or either or both of tissue contacting surfaces 73, 75). As another example, different energy modes may deliver energy: with different energy parameters (e.g., at different voltage, current, and/or power levels); according to different energy algorithms (e.g., constant current, voltage, power, variable algorithms with different curve shapes and/or magnitudes, etc.); based on different feedback (e.g., power thresholds, impedance thresholds, etc.); for different lengths of time; combinations thereof; etc. The energy modes may correspond to different tissue conditions (e.g., based on detected tissue type, based on whether tissue was previously sealed or not, etc.) and/or conditions of end effector assembly 70 (e.g., whether jaw members 72, 74 are disposed in the spaced apart position or the approximated position).

[0050] With reference to FIGS. 1, 3 A, and 3B, mode selection assembly 90 enables selection of the operational mode and/or the energy mode. Mode selection assembly 90 includes a mode selection button 92 disposed on either side of housing 20. Each mode selection button 92 includes an underlying electrical switch 94 (FIG. 1, only one switch 94 is shown) and may be mounted on printed circuit boards (PCBs) (not shown) within housing 20, although other configurations are also contemplated. The electrical switch 94 associated with each mode selection button 92 is electrically coupled to generator 18, e.g., via one or more electrical lead wires extending from electrical switch 64 through housing 20 and electrosurgical cable 14, such that at least three states of switches 94 are detectable by generator 18: a first state wherein neither of switches 94 are activated; a second state wherein only one of switches 94 is activated; and a third state wherein both of switches 94 are activated. This may be accomplished by independent electrical connections between each switch 94 and generator 18 or by detection of different outputs in response to one switch 94 being activated as compared to both switches 94 being activated. For example, generator 18 may detect different outputs, e.g., different values of resistance, voltage, current, etc., in each of the first, second, and third states. In response to detecting the output corresponding to a particular state, generator 18 may change between or set different operational modes and/or energy modes. Generator 18 may also be configured to determine the length of time mode selection assembly 90 is disposed in the first, second, or third states, e.g., by clocking the length of time the output is detected.

[0051] In aspects, the first state corresponds to a no change state, wherein no mode changes are implemented, the second state corresponds to a first change instruction to change one of the energy mode or the operational mode, and the third state corresponds to a second change instruction to change the other of the energy mode or the operational mode. For example, where either of (but not both) electrical switches 64 are activated, generator 18 may switch from one energy mode to the next energy mode (wherein, after the last energy mode is toggled through, generator 18 returns to the first energy mode). However, where both electrical switches 64 are activated, generator 18 may switch between the operational modes (e.g., between the manual cut mode and the automatic cut mode). Thus, switching between the energy modes and switching between the operational modes can be readily distinguished. In particular, since a user would typically only actuate one mode selection button 92 on one side of housing 20, e.g., with a finger of the same hand that holds housing 20, the act of actuating both mode selection buttons 92 on either side of housing 20, e.g., requiring both hands or a significant readjustment of the grasp of housing 20, requires a particular intent, thus ensuring that the user intends to switch between the operational modes and not between the energy modes. In aspects, switching between the operational modes, e.g., in response to activation of both electrical switches 64, may further include a time requirement, e.g., wherein activation of both electrical switches 64 is required to be maintained for a predetermined time (e.g., 3 seconds, 5 seconds, etc.), thus further distinguishing between the switching between the energy modes and the switching between the operational modes and further ensuring user mode switching in accordance with user intent.

[0052] In aspects, rather than utilizing mode selection assembly 90 to switch between the operational modes, generator 18 may default to one operational mode, e.g., the manual cut mode, and require affirmative input to switch to another operational mode, e.g., the automatic cut mode. For example, generator 18 may remain in the manual cut mode unless trigger 52 is activated during tissue sealing, thus signaling generator 18 to switch to the automatic cut mode for that tissue treatment cycle of sealing and cutting. Once sealing and cutting is complete, in such aspects, generator 18 reverts to the manual cut mode. Activation of trigger 52 during sealing to switch to the automatic cut mode may require any activation, a pre-determined number of activations, a predetermined activation time length, etc.

[0053] In the automatic cut mode, generator 18 may supply energy to cutting element 110 to cut tissue until an end condition is reached, e.g., until generator 18 detects a drop in power below a power threshold, thus indicating that tissue cutting is complete. In the manual cut mode, generator 18 may supply energy to cutting element 110 only so long as trigger 52 remains activated. Other configurations are also contemplated.

[0054] Referring to FIGS. 4A and 4B, another mode selection assembly 490 provided in accordance with the present disclosure is shown. Mode selection assembly 490 may be utilized within forceps 10 (FIG. 1) or any other suitable surgical instrument, and may include one or more mode selection buttons 492, e.g., a mode selection button 492 disposed on either side of housing 20 (FIG. 1) similarly as detailed above with respect to mode selection assembly 90 (FIGS. 1, 3 A, and 3B). Except as explicitly contradicted below, mode selection assembly 490 may include any of the aspects and features of mode selection assembly 90 (FIG. 1) as detailed above.

[0055] Each mode selection button 492 of mode selection assembly 490 defines an at least partially translucent housing. A visual output device 496, e.g., one or more LED’s, display screens, etc., underlies each mode selection button 492 such that a visual output emitted by a visual output device 496 is visible through, e.g., from the exterior of, the corresponding mode selection button 492. The visual output device 496, more specifically, may produce a different output depending upon the mode of forceps 10 (FIG. 1), e.g., a first output 497a when forceps 10 (FIG. 1) is in the manual cut operational mode and a second, different output 497b when forceps 10 (FIG. 1) is in the automatic cut operational mode, thus enabling a user to readily identify the implemented operational mode. Additionally or alternatively, visual output device(s) 496 may indicate the energy mode implemented. One or more audio output devices (not shown), e.g., speakers, disposed on or within forceps 10 and/or generator 18 (see FIG. 1) may additionally or alternatively be provided to indicate the implemented operational mode, and/or when mode switching occurs. As an alternative to indicating the operational mode, mode selection assembly 490 may indicate the energy mode. Generator 18 (FIG. 1) may control visual output device 496 to provide the appropriate output corresponding to the determined mode.

[0056] Turning to FIG. 5, an indicator assembly 597 is shown disposed on fixed handle 32 of housing 20 with mode selection assembly 90 disposed on body 21 of housing 20. However, this configuration may be reversed or indicator assembly 597 and mode selection assembly 90 may be disposed at any other suitable spaced apart positions on housing 20. Indicator assembly 597, more specifically, is positioned towards a free end of fixed handle 32 and may be oriented on a side of housing 20 and/or on a front face of housing 20, e.g., facing lever 34. In aspects, an indicator assembly 597 is disposed on each side of fixed handle 32 of housing 20.

[0057] Indicator assembly 597 includes a visual output device 598, e.g., one or more LED’s, display screens, etc., disposed on or within fixed handle 32 of housing 20 and configured to produce a different output depending upon the mode of forceps 10 (FIG. 1), similarly as detailed above with respect to visual output device(s) 496 (FIGS. 4A and 4B). Generator 18 (FIG. 1) may control visual output device 598 to provide the appropriate output corresponding to the determined mode.

[0058] Referring to FIGS. 6A and 6B, in aspects, housing 20 includes first and second mode selection assemblies 690a, 690b. First mode selection assembly 690a may be configured similarly as detailed above with respect to mode selection assembly 90 (FIGS. 1, 3 A, and 3B), except that, in aspects, first mode selection assembly 690a does not output the third state for detection by generator 18 (FIG. 1). First mode selection assembly 690a may be configured to enable switching between the energy modes and second mode selection assembly 690b may be configured to enable switching between the operational modes e.g., the manual cut and automatic cut operational modes, although the reverse is also contemplated. In aspects, first mode selection assembly 690a is omitted.

[0059] Second mode selection assembly 690b includes a slider 692 movable along a track 693 between a first position (FIG. 6A) and a second position (FIG. 6B). Second mode selection assembly 690b further includes an underlying electrical circuit 694 including, for example, a potentiometer, first and second switches, and/or other suitable electrical features, to convert the position of slider 692 into an electrical output, e.g., a resistance, voltage, current, etc. and/or a value of the resistance, voltage, current, etc. , to enable detection thereof by generator 18 to set the mode corresponding to the position of slider 692. Further, in aspects, second mode selection assembly 690b includes first and second indicators 698a, 698b which may include colors, graphics, text, combinations thereof, indicating the first and second modes, respectively. Indicators 698a, 698b may be fixed representations or may be variable, e.g., by including LED’s, displays, etc. When slider 692 is disposed in the first position (FIG. 6A), corresponding to the first mode, first indicator 698a is visible, thus indicating to the user that forceps 10 (FIG. 1) is in the first mode. Second indicator 698b is obstructed by slider 692 when slider 692 is disposed in the first position (FIG. 6A). When slider 692 is moved to the second position (FIG. 6B), corresponding to the second mode, second indicator 698b is visible, thus indicating to the user that forceps 10 (FIG. 1) is in the second mode. First indicator 698a is obstructed by slider 692 when slider 692 is disposed in the second position (FIG. 6B).

[0060] Referring to FIGS. 7A and 7B, another mode selection assembly 790 configured for use with forceps 10 (FIG. 1) or other suitable surgical instrument is shown. Mode selection assembly 790 may be positioned on housing 20 similarly as mode selection assembly 690 (see FIGS. 6A and 6B), mode selection assembly 90 (FIG. 1), or in any other suitable position. Mode selection assembly 790 includes a rocker 792 movable between a first position (FIG. 7A) and a second position (FIG. 7B) to selectively activate first and second underlying switches (not shown) corresponding to respective first and second modes, e.g., the manual cut and automatic cut operational modes. Generator 18 (FIG. 1) is configured to detect which of the underlying switches is activated and, thus, which mode to implement. Mode selection assembly 790 may be configured to enable switching between the operational modes or, in other aspects, the energy modes.

[0061] In aspects, mode selection assembly 790 further includes one or more visual output devices 796 configured to provide an indication as to the position of rocker 792 and, thus, the implemented mode, similarly as detailed above with respect to mode selection assembly 490 (FIGS. 4A and 4B).

[0062] With reference to FIGS. 8A and 8B, still another mode selection assembly 890 configured for use with forceps 10 (FIG. 1) or other suitable surgical instrument is shown. Mode selection assembly 890 may be utilized for example, with mode selection assembly 90 (FIGS. 3A and 3B), such that mode selection assembly 890 enables switching between one type of mode (e.g., the operational modes) while mode selection assembly 90 (FIGS. 3A and 3B) enables switching between another type of mode (e.g., the energy modes). Alternatively, mode selection assembly 90 (FIGS. 3 A and 3B) may be omitted. [0063] Mode selection assembly 890 includes a toggle 892 movable through housing 20 between a first position (FIG. 8A), wherein toggle 892 protrudes or protrudes further from a first side of housing 20, and a second position (FIG. 8B), wherein toggle 892 protrudes or protrudes further from a second, opposite side of housing 20. Mode selection assembly 890 further includes an underlying electrical circuit 894 including, for example, a potentiometer, first and second switches, and/or other suitable electrical features, to convert the position of toggle 892 into an electrical output, e.g., a resistance, voltage, current, etc. and/or a value of the resistance, voltage, current, etc., to enable detection thereof by generator 18 to set the mode corresponding to the position of toggle 892 Mode selection assembly 890 may be configured to enable switching between the operational modes e.g., the manual cut and automatic cut operational modes, although other configurations are also contemplated.

[0064] Referring generally to FIGS. 1-8B, any of the above-detailed mode selection assemblies 90, 490, 690, 790, 890 may further be configured to produce tactile and/or audible feedback in response to switching between the first and second positions corresponding to the different modes, thus provide further feedback to the user that the mode has been successfully changed.

[0065] Turning to FIGS. 9A and 9B, a touch-screen display 900 of generator 18 (FIG. 1) is shown. In addition or as an alternative to any of the above-detailed mode selection assemblies and/or mode indicators disposed on or otherwise associated with housing 20 of forceps 10 (see FIG. 1), mode selection may be made, displayed, and/or confirmed on touch-screen display 900 or other suitable user interface associated with generator 18 (FIG. 1). In aspects, touch-screen display 900 is associated with a robotic surgical system (not shown). In aspects, display 900 is not touchscreen but is configured to receive user input from another user input device, e.g., physical button, foot pedal, etc.

[0066] Touch-screen display screen 900 may include one or more panels 910, 920, 930, 940 corresponding to different energy outputs associated with generator 18 (FIG. 1). Panel 910, for example, may correspond to the output of cut energy to cutting element 110 of forceps 10 (FIG. 1). Thus, with respect to the cut energy provided to cutting element 110 of forceps 10 (FIG. 1), panel 910 may display setting information 912, the energy mode 914, and the operational mode 916. For example, with respect to the energy mode 914, the text “CLOSED CUT” is displayed to indicate that forceps 10 (FIG. 1) is in a closed cut energy mode 914 and/or that panel 910 corresponds to use of cutting element 110 in a closed cut energy mode 914, e.g., wherein energy settings are selected to facilitate cutting tissue grasped between jaw members 72, 74 (FIG. 1). Of course, if forceps 10 (FIG. 1) is in a different energy mode, the energy mode 914 may be displayed with different text, icons, colors, etc., to facilitate determining the energy mode of forceps 10 (FIG. 1) and corresponding settings thereof. Alternatively, panel 910 (or other panels 920, 930, 940) may include information corresponding to other energy modes, e.g., an open cut energy mode wherein energy settings are selected to facilitate cutting tissue with jaw members 72, 74 disposed in the spaced apart position (FIG. 1).

[0067] With respect to the operational mode 916 of forceps 10 (FIG. 1), virtual toggle button 918 is shown in FIG. 9A with the text “ON” and “AUTOCUT” to indicate that forceps 10 (FIG. 1) is in the automatic cut operational mode or, in other words, that the automatic cut operational mode is “ON.” Of course, if forceps 10 (FIG. 1) is switched to the manual cut operational mode, as shown in FIG. 9B, virtual toggle button 918 is moved to an “OFF” position (with corresponding text displayed) to indicate that the automatic cut operational mode is “OFF” and, thus, that the manual operational cut mode is “ON.” In addition or as an alternative to text, other suitable icons, images, etc. to identify the implemented mode are also contemplated.

[0068] In addition or as an alternative to virtual toggle button 918 updating in response to actuation of any of the above-detailed mode selection assemblies disposed on or otherwise associated with housing 20 of forceps 10 (FIG. 1), a user may manipulate virtual toggle button 918, e.g., by pressing or swiping virtual toggle button 918 to switch forceps 10 (FIG. 1) between the automatic cut operational mode (FIG. 9A) and the manual cut operational mode (FIG. 9B).

[0069] With reference to FIGS. 10A and 10B, in aspects, panel 910 may further include a color background 1010, 1020 for at least a portion of panel 910, e.g., for one or more of setting information 912, energy mode 914, operational mode 916, or virtual toggle button 918, to indicate or further indicate the operational mode of forceps 10 (FIG. 1). For example, in the automatic cut operational mode (FIG. 10A) a first color background 1010 for at least a portion of panel 910 is provided while, in the manual cut operational mode (FIG. 10B), a second color background 1020 for at least a portion of panel 910 is provided. First and second color backgrounds 1010, 1020 are different colors, thus facilitating a user’s determination of the implemented operational mode of forceps 10 (FIG. 1) when viewing panel 910. As an alternative to a different color background, color overlays, highlights, borders, etc. are also contemplated. [0070] Aspects of this disclosure may be further described by reference to the following numbered paragraphs:

[0071] 1. A surgical system, comprising: a housing; a shaft extending distally from the housing; an end effector assembly coupled to a distal end of the shaft, the end effector assembly including first and second jaw members, at least one of the first or second jaw members movable between a spaced apart position and an approximated position for grasping tissue between the first and second jaw members, at least one of the first or second jaw members configured to transmit energy to the grasped tissue for sealing the grasped tissue, at least one of the first or second jaw members including an energizable cutting element configured to transmit energy to tissue for cutting tissue; and at least one mode selection assembly, wherein the at least one mode selection assembly is activatable in a first manner to switch between modes of a first category of modes associated with energizing the cutting element for cutting tissue and in a second manner different from the first manner to switch between modes of a second, different category of modes associated with energizing the cutting element for cutting tissue.

[0072] 2. The surgical system according to paragraph 1, wherein one of the first or second categories of modes is an operational mode category.

[0073] 3. The surgical system according to paragraph 2, wherein the modes of the operational mode category include an automatic cut mode, wherein the cutting element is energized to cut tissue automatically after tissue sealing is completed, and a manual cut mode, wherein user input is required to energize the cutting element to cut tissue.

[0074] 4. The surgical system according to paragraph 2, wherein another of the first or second categories of modes is an energy mode category.

[0075] 5. The surgical system according to paragraph 4, wherein the modes of the energy mode category include a first energy mode and a second energy mode, and wherein at least one of an energy algorithm, an energy delivery parameter, or an energy feedback threshold differs between the first and second energy modes.

[0076] 6. The surgical system according to paragraph 1, wherein the at least one mode selection assembly includes first and second buttons, wherein the first manner includes activating only one of the first or second buttons, and wherein the second manner includes activating both of the first and second buttons. [0077] 7. The surgical system according to paragraph 1, wherein the at least one mode selection assembly includes a first mode selection assembly that is selectively activatable in the first manner and a second mode selection assembly that is selectively activatable in the second manner.

[0078] 8. The surgical system according to paragraph 7, wherein one of the first or second mode selection assemblies includes a button and wherein depression of the button activates the one of the first or second mode selection assemblies.

[0079] 9. The surgical system according to paragraph 7, wherein one of the first or second mode selection assemblies includes a slider and wherein sliding of the slider activates the one of the first or second mode selection assemblies.

[0080] 10. The surgical system according to paragraph 7, wherein one of the first or second mode selection assemblies includes a rocker and wherein rocking of the rocker activates the one of the first or second mode selection assemblies.

[0081] 11. The surgical system according to paragraph 7, wherein one of the first or second mode selection assemblies includes a toggle and wherein pushing the toggle activates the one of the first or second mode selection assemblies.

[0082] 12. The surgical system according to paragraph 1, wherein at least one of the at least one mode selection assembly is disposed on the housing.

[0083] 13. The surgical system according to paragraph 1, wherein the at least one mode selection assembly disposed on the housing includes an indicator configured to visually indicate at least one of an implemented mode of the first category of modes or an implemented mode of the second category of modes.

[0084] 14. The surgical system according to paragraph 1, further comprising an indicator disposed on the housing and configured to visually indicate at least one of an implemented mode of the first category of modes or an implemented mode of the second category of modes.

[0085] 15. The surgical system according to paragraph 1, wherein at least one of the at least one mode selection assembly is configured to produce a tactile and/or audible output in response to at least one of switching between modes of the first category of modes or switching between modes of the second category of modes.

[0086] 16. The surgical system according to paragraph 1, further comprising a surgical generator configured to supply the energy to the at least one of the first or second jaw members for sealing the grasped tissue and to supply the energy to the cutting element for cutting tissue. [0087] 17. The surgical system according to paragraph 16, wherein at least one of the at least one mode selection assembly is associated with a display screen of the surgical generator.

[0088] 18. The surgical system according to paragraph 17, wherein at least one of the first manner or the second manner includes interacting with the display screen.

[0089] 19. The surgical system according to paragraph 17, wherein at least one of an implemented mode of the first category of modes or an implemented mode of the second category of modes is displayed on the display screen.

[0090] 20. The surgical system according to paragraph 1, further comprising: an activation assembly, wherein activation of the activation assembly initiates the transmission of the energy for sealing; and a trigger assembly, wherein activation of the trigger assembly initiates the transmission of the energy for cutting.

[0091] 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 exemplifications of particular configurations. Those skilled in the art will envision other modifications within the scope and spirit of the claims appended hereto.

Claims

WHAT IS CLAIMED IS:

1. A surgical system, comprising: a housing (20); a shaft (12) extending distally from the housing (20); an end effector assembly (70) coupled to a distal end of the shaft (12), the end effector assembly (70) including first and second jaw members (72, 74), at least one of the first or second jaw members (72, 74) movable between a spaced apart position and an approximated position for grasping tissue between the first and second jaw members (72, 74), at least one of the first or second jaw members (72, 74) configured to transmit energy to the grasped tissue for sealing the grasped tissue, at least one of the first or second jaw members (72, 74) including an energizable cutting element (110) configured to transmit energy to tissue for cutting tissue; and at least one mode selection assembly (90, 490, 690a, 690b, 790, 890, 918), wherein the at least one mode selection assembly (90, 490, 690a, 690b, 790, 890, 918) is activatable in a first manner to switch between modes of a first category of modes associated with energizing the cutting element (110) for cutting tissue and in a second manner different from the first manner to switch between modes of a second, different category of modes associated with energizing the cutting element (110) for cutting tissue.

2. The surgical system according to claim 1 , wherein one of the first or second categories of modes is an operational mode category.

3. The surgical system according to claim 2, wherein the modes of the operational mode category include an automatic cut mode, wherein the cutting element (110) is energized to cut tissue automatically after tissue sealing is completed, and a manual cut mode, wherein user input is required to energize the cutting element (110) to cut tissue.

4. The surgical system according to claim 2 or 3, wherein another of the first or second categories of modes is an energy mode category.

5. The surgical system according to claim 4, wherein the modes of the energy mode category include a first energy mode and a second energy mode, and wherein at least one of an energy algorithm, an energy delivery parameter, or an energy feedback threshold differs between the first and second energy modes.

6. The surgical system according to any preceding claim, wherein the at least one mode selection assembly (90) includes first and second buttons (92), wherein the first manner includes activating only one of the first or second buttons (92), and wherein the second manner includes activating both of the first and second buttons (92).

7. The surgical system according to any one of claims 1-5, wherein the at least one mode selection assembly includes a first mode selection assembly (90, 690a) that is selectively activatable in the first manner and a second mode selection assembly (690b, 790, 890, 918) that is selectively activatable in the second manner.

8. The surgical system according to claim 7, wherein: one of the first or second mode selection assemblies includes a button (92, 492) and wherein depression of the button (92, 492) activates the one of the first or second mode selection assemblies; one of the first or second mode selection assemblies includes a slider (694) and wherein sliding of the slider (694) activates the one of the first or second mode selection assemblies; one of the first or second mode selection assemblies includes a rocker (792) and wherein rocking of the rocker (792) activates the one of the first or second mode selection assemblies; or one of the first or second mode selection assemblies includes a toggle (892) and wherein pushing the toggle (892) activates the one of the first or second mode selection assemblies.

9. The surgical system according to any preceding claim, wherein at least one of the at least one mode selection assembly (90, 490, 690a, 690b, 790, 890) is disposed on the housing (20).

10. The surgical system according to any preceding claim, wherein the at least one mode selection assembly disposed on the housing (20) includes an indicator (497a, 497b, 698a, 698b, 796) configured to visually indicate at least one of an implemented mode of the first category of modes or an implemented mode of the second category of modes.

11. The surgical system according to any preceding claim, further comprising an indicator (598) disposed on the housing (20) and configured to visually indicate at least one of an implemented mode of the first category of modes or an implemented mode of the second category of modes.

12. The surgical system according to any preceding claim, wherein at least one of the at least one mode selection assembly (90, 490, 690a, 690b, 790, 890, 918) is configured to produce a tactile and/or audible output in response to at least one of switching between modes of the first category of modes or switching between modes of the second category of modes.

13. The surgical system according to any preceding claim, further comprising a surgical generator (18) configured to supply the energy to the at least one of the first or second jaw members (72, 74) for sealing the grasped tissue and to supply the energy to the cutting element (110) for cutting tissue.

14. The surgical system according to claim 13, wherein at least one of the at least one mode selection assembly is associated with a display screen (910) of the surgical generator (18) and wherein at least one of the first manner or the second manner includes interacting with the display screen (910).

15. The surgical system according to any preceding claim, further comprising: an activation assembly (60), wherein activation of the activation assembly (60) initiates the transmission of the energy for sealing; and a trigger assembly (50), wherein activation of the trigger assembly (50) initiates the transmission of the energy for cutting.