Resetting device and surgical instrument

Abstract

The application provides a reset device and a surgical instrument. The reset device comprises a transmission component movable in a first direction or a second direction, an electric mechanism providing power for movement of the transmission component, and a transmission mechanism detachably connecting the transmission component and the electric mechanism. The reset device further comprises a reset mechanism configured to be operated to move at least partially in the first direction to drive the transmission mechanism to be separated from the transmission component, and after the transmission mechanism is separated from the transmission component, to be operated to move at least partially in the second direction to drive the transmission component to move in the second direction. The application can manually reset the transmission component when the electric back-off function fails, adapt to ergonomic operation behavior habits, be beneficial to operation of a doctor in a tense psychological state in an emergency situation of failure of the surgical instrument, improve use experience, and improve surgical effect.

Description

Technical Field

[0001] This application relates to the field of medical device technology, specifically to a repositioning device and a surgical instrument. Background Technology

[0002] In existing technologies, some surgical instruments require the surgeon to operate a firing mechanism at the proximal end to drive a transmission shaft to move distally, thereby driving a distal actuator to perform the corresponding surgical operation. Taking a surgical stapler as an example, a conventional surgical stapler includes a stapler body, a firing handle movably connected to the stapler body, and an end effector that cooperates with the stapler body. The stapler body includes a transmission component. During surgery, tissue is placed between the anvil and the staple cartridge of the end effector. The distance between the anvil and the staple cartridge is adjusted to gradually clamp the tissue. Then, by operating the handle, the transmission component moves distally, causing the staples in the staple cartridge to be formed on the anvil, completing the tissue anastomosis.

[0003] During operation, surgeons often need to apply considerable force to the firing mechanism (such as the firing handle) to complete the surgery, which is quite inconvenient. Therefore, electrically driven surgical instruments were developed. The surgeon simply starts the motor, causing the output shaft to rotate in a specific direction, which drives the transmission components to move distally. After the surgery, the motor output shaft can be rotated in the opposite direction, causing the transmission components to move proximally and return the instrument to its original position. However, when the motor and related mechanical and electronic components malfunction, the electric retraction function may fail, preventing the instrument from returning to its original position to open the end effector jaws, thus hindering the surgery. Summary of the Invention

[0004] To address the problems in the prior art, the purpose of this application is to provide a reset device and surgical instrument that enables manual reset of the transmission components when the electric retraction function fails.

[0005] This application provides a reset device for surgical instruments. The reset device includes a transmission component movable in a first direction or a second direction, an electric mechanism providing power for the movement of the transmission component, and a transmission mechanism detachably connecting the transmission component and the electric mechanism. The reset device further includes:

[0006] A reset mechanism is configured to be operated to move at least partially along the first direction to drive the transmission mechanism to separate from the transmission member, and after the transmission mechanism is separated from the transmission member, to be operated to move at least partially along the second direction to drive the transmission member to move along the second direction.

[0007] In some embodiments, the reset mechanism includes:

[0008] A first driving member is configured to be driven to move along the first direction to drive the transmission mechanism to separate from the transmission component;

[0009] An operating mechanism is configured to be operated to drive the first drive member to move along the first direction, and after the transmission mechanism is separated from the transmission member, to be operated to move along the second direction to drive the transmission member to move along the second direction.

[0010] In some embodiments, the transmission mechanism is configured to be driven by the first drive member to move along a third direction to separate from the transmission member, wherein the third direction is perpendicular to the first direction.

[0011] In some embodiments, the transmission mechanism includes a first gear. When the transmission mechanism is in a first state, the first gear is engaged with the electric mechanism and the transmission component respectively. When the transmission mechanism is in a second state, the first gear is disengaged from the transmission component.

[0012] The transmission mechanism further includes a third driving member, which abuts against one end face of the first gear and also abuts against the first driving member.

[0013] In some embodiments, the surface of the third driving member that abuts against the first driving member is an inclined surface or an arc surface.

[0014] In some embodiments, the operating mechanism includes a first rod and a second drive member. The first rod is at least partially provided with an external thread, and the second drive member is disposed at a first end of the first rod. The second drive member is at least partially provided with an internal thread that mates with the external thread. The second drive member or the first rod at least partially abuts against the first drive member.

[0015] In some embodiments, the operating mechanism further includes a second lever, which is rotatably connected to a second end of the first lever via a pivot;

[0016] The first rod has an internal cavity, and the second rod has a guide groove on one side. The pivot enters at least partially into the guide groove and can move along the extension direction of the guide groove so that the second rod enters at least partially into the cavity of the first rod.

[0017] In some embodiments, the transmission component includes a transmission shaft, wherein the first direction and the second direction are respectively directions along the axial direction of the transmission shaft, and the first direction and the second direction are opposite to each other;

[0018] The operating mechanism is connected to the drive shaft, and when the operating mechanism is operated to move at least partially along the second direction, it drives the drive shaft to move along the second direction.

[0019] In some embodiments, the operating mechanism is provided with a first connecting portion, and the transmission component is provided with a second connecting portion, wherein the first connecting portion and the second connecting portion form a rotatable connection that cannot move along the axial direction of the transmission shaft.

[0020] In some embodiments, the first connecting portion includes a tapered segment and a connecting segment, and the second connecting portion includes a snap-fit ​​portion and a receiving portion. The maximum outer diameter of the tapered segment is greater than the outer diameter of the connecting segment. The tapered segment enters the receiving portion, and the connecting segment cooperates with the snap-fit ​​portion.

[0021] In some embodiments, the system further includes a housing, with the transmission component and the transmission mechanism at least partially entering the interior of the housing; the operating mechanism is detachably connected to the transmission shaft, and the housing is also provided with a receiving cavity, into which the operating mechanism can at least partially enter after being separated from the transmission component.

[0022] This application also provides a surgical instrument, including the aforementioned repositioning device.

[0023] The repositioning device and surgical instrument provided in this application have the following advantages:

[0024] By adopting this application, when the electric retraction function fails, a reset mechanism can be used to drive the transmission mechanism to separate from the transmission component. After the transmission mechanism and transmission component are separated, the reset mechanism can be operated to move in a second direction to drive the transmission component to move in the second direction, thereby achieving manual reset of the transmission component. The second direction is both the direction of force application during manual operation and the retraction direction of the transmission component; that is, the direction of force application and the direction of retraction are consistent, conforming to ergonomic operating habits. In emergency situations involving surgical instrument malfunction, this facilitates operation under stress for doctors, improving the user experience and enhancing surgical outcomes. This application can be applied to surgical staplers or other types of electric surgical instruments. Attached Figure Description

[0025] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0026] Figure 1 This is a schematic diagram of the structure of a reset device according to an embodiment of this application;

[0027] Figure 2 This is a schematic diagram of the structure for housing the operating lever of a reset device according to an embodiment of this application;

[0028] Figure 3 This is a schematic diagram of the internal structure of the housing according to an embodiment of this application;

[0029] Figure 4 This is a schematic diagram of the structure of a reset device after removing the housing according to an embodiment of this application;

[0030] Figure 5 This is a schematic diagram of the fit between the housing and internal components according to an embodiment of this application;

[0031] Figure 6 This is a schematic diagram of the structure of a reset device after removing the housing according to an embodiment of this application;

[0032] Figure 7 This is a schematic diagram of the cooperation between the transmission component, the transmission mechanism, and the operating mechanism according to an embodiment of this application;

[0033] Figure 8 This is a schematic diagram of the cooperation between the transmission component and the operating component according to an embodiment of this application;

[0034] Figure 9 This is a schematic diagram of the cooperation between the transmission component and the operating mechanism according to an embodiment of this application;

[0035] Figure 10 This is a schematic diagram of the proximal end of a drive shaft according to an embodiment of this application;

[0036] Figure 11 This is a schematic diagram of the structure of the operating lever according to an embodiment of this application;

[0037] Figure 12 This is a schematic diagram illustrating the second rod storage process according to an embodiment of this application;

[0038] Figure 13 This is a schematic diagram of the second rod being retracted according to an embodiment of this application;

[0039] Figure 14 and Figure 15 This is a schematic diagram of the structure of the reset mechanism driving the transmission mechanism into the second state according to an embodiment of this application;

[0040] Figure 16 This is a schematic diagram of the structure of the operating mechanism and the first driving member in another embodiment of this application.

[0041] Figure label:

[0042] 1. Housing 3. First driving component

[0043] 11 First opening 31 Distal guiding surface

[0044] 12 Second opening 32 Proximal mating surface

[0045] 13 Third opening 4 Transmission mechanism

[0046] 14 Receiving cavity 41 First gear

[0047] 15 Transmission component receiving groove 42 First gear shaft

[0048] 20 Reset mechanism 43 Third drive component

[0049] 2. Operating mechanism 431, supporting surface

[0050] 21 Operating component 44 Elastic component

[0051] 211 First lever 5 Electric mechanism

[0052] 2111 External Thread 51 Motor

[0053] 2112 First connecting part 52 Second gear

[0054] 2113 Conical Section 6 Transmission Components

[0055] 2114 Connecting section 60 Drive shaft

[0056] 212 Second rod, 61 tooth surface

[0057] 2121 Guide groove 62 Second connecting part

[0058] 213 Pivot 621 Snap-fit ​​Part

[0059] 22 Second drive component 622 Receiving part

[0060] 221 Internal Thread Detailed Implementation

[0061] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this application will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted. The words “or” and “or” in the specification may mean “and” or “or”. Although the terms “upper,” “lower,” “between,” etc., may be used in this specification to describe different exemplary features and elements of this application, these terms are used herein only for convenience, such as the orientation of the examples described in the accompanying drawings. Nothing in this specification should be construed as requiring a specific three-dimensional orientation of the structure to fall within the scope of this application. Although “first,” “second,” or “third,” etc., are used in this specification to denote certain features, they are merely indicative of function and not as a limitation on the number or importance of specific features.

[0062] To address the technical problems in the prior art, this application provides a resetting device for surgical instruments and a surgical instrument including the resetting device. The surgical instrument includes an instrument body and an actuator, the actuator being located at the distal end of the instrument body. The instrument body contains an electric mechanism and a transmission component. The electric mechanism drives the transmission component to move distally, thereby driving the actuator to perform the required actions. After surgery, the electric mechanism drives the transmission component to move proximally back to achieve resetting. When the electric mechanism's retraction function fails, the resetting device of this application can drive the transmission component to reset.

[0063] The structure of the repositioning device is described in detail below with reference to the accompanying drawings, using a surgical stapler as an example. It is understood that this application is not limited to use in surgical staplers, but can also be applied to other types of surgical instruments.

[0064] like Figures 1-4As shown, in one embodiment, the reset device includes a transmission component 6 movable along a first direction or a second direction, an electric mechanism 5 providing power for the movement of the transmission component 6, a transmission mechanism 4 detachably connecting the transmission component 6 and the electric mechanism 5, a reset mechanism 20 for manually driving the transmission component 6 to reset, and a housing 1. The transmission component 6 and the transmission mechanism 4 are at least partially inserted into the interior of the housing 1. The first direction is the forward direction of the transmission component 6 when the stapler is fired, and the second direction is the retraction direction of the transmission component 6 after the stapler is fired. When the stapler is fired, the transmission component 6 moves from its initial position along the first direction to the firing position. After the stapler is fired, the transmission component 6 can be driven to move from the firing position along the second direction back to the initial position.

[0065] When a motor or related mechanical or electronic component malfunctions, causing the electric retraction function to fail, the reset mechanism 20 is configured to be operable and at least partially movable along the first direction to drive the transmission mechanism 4 to separate from the transmission component 6, facilitating manual retraction of the transmission component 6. Furthermore, after the transmission mechanism 4 separates from the transmission component 6, the reset mechanism 20 can be operated and at least partially moved along the second direction to drive the transmission component 6 to move along the second direction, thus achieving the retraction and reset of the transmission component 6. The second direction is both the direction of force application during manual operation and the retraction direction of the transmission component; that is, the direction of force application and the retraction direction are consistent, conforming to ergonomic operating habits. In emergency situations involving surgical instrument malfunctions, this allows doctors to operate under stress, improving the user experience and enhancing surgical outcomes.

[0066] In this embodiment, the first direction is from the proximal side to the distal side of the stapler, and the second direction is from the distal side to the proximal side of the stapler. Both the first and second directions are parallel to the axis of the stapler. The distal and proximal sides are relative to the operator; the side closer to the operator is the proximal side, and the side farther from the operator, i.e., closer to the surgical position, is the distal side. The direction along the axis of the stapler is the axis of the stapler. For example, in Figure 1 From the perspective of [the device], direction S1 is the first direction, i.e., the direction from the proximal side to the distal side. Direction S2 is the height direction, i.e., the longitudinal direction. Direction S3 is the lateral direction, i.e., the width direction. In this application, for a component, the inner and outer sides are relative to the center of the component; the side closer to the center is the inner side, and the side farther from the center is the outer side.

[0067] like Figures 1-4As shown, the transmission component 6 includes a transmission shaft 60 extending axially along the anastomosis device, and the interior of the housing 1 is provided with a receiving groove 15 for accommodating the transmission component 6. The transmission component 6 has a toothed surface 61 on its surface facing the transmission mechanism 4. The transmission mechanism 4 includes a first gear 41, a first gear shaft 42 passing through the axis of the first gear 41, a third driving member 43, and an elastic member 44. The third driving member 43 at least partially covers the upper end face of the first gear 41. The housing 1 also has a second opening 12 through which the electric mechanism 5 partially passes. The elastic member 44 is a compression spring, located between the lower end face of the first gear 41 and the electric mechanism 5, providing an upward elastic biasing force to the first gear 41. When no external force is applied, the elastic biasing force of the elastic member 44 holds the first gear 41 in a state of engagement with the transmission component 6. The electric mechanism 5 includes a motor 51 and a second gear 52. The second gear 52 engages with the output shaft of the motor 51, allowing the motor 51 to drive the second gear 52 to rotate. The transmission mechanism 4 includes a first state and a second state. In the initial state, the transmission mechanism 4 is in the first state, and the first gear 41 simultaneously meshes with the tooth surface 61 of the transmission component 6 and the second gear 52. Figure 4 (As shown in the diagram), if the motor 51 drives the second gear 52 to rotate, the transmission component 6 can be driven to move axially along the anastomosis device via the first gear 41. When the reset mechanism 20 is operated and moves at least partially along the first direction, it can drive the first gear 41 to separate from the tooth surface 61 of the transmission component 6, causing the transmission mechanism 4 to enter the second state from the first state. When the transmission mechanism 4 is in the second state, the first gear 41 only maintains engagement with the second gear 52, and the first gear 41 is separated from the tooth surface 61 of the transmission component 6. Figure 14 and Figure 15 (The state shown).

[0068] The first gear 41 is at least partially located on one side of the transmission component 6 along a third direction. For example... Figures 3-6 As shown, the third party is in Figure 4 The direction from top to bottom, that is Figure 1The direction is opposite to the S2 direction shown in the diagram. That is, the transmission component 6 is at least partially located on one side of the first gear 41 along the S2 direction. The third direction is perpendicular to the first direction. The elastic biasing force provided by the elastic member 44 to the first gear 41 is opposite to the third direction. The first gear shaft 42 and the output shaft of the motor 51 are both parallel to the third direction. The reset mechanism 20 includes a first drive member 3. The first drive member 3 extends along the axial direction of the connector, and the distal end of the first drive member 3 is close to or abuts against the abutting surface 431 of the third drive member 43. The abutting surface 431 of the third drive member 43 is a slope or an arc surface, so as to facilitate the abutting surface 31 of the distal end of the first drive member 3 against the abutting surface 431 of the third drive member 43, and drive the first gear 41 to move along the third direction and separate from the tooth surface 61 of the transmission component 6. Preferably, the distal end of the first drive member 3 is provided with an arc-shaped or inclined guide surface 31, which can improve the stability of the abutting engagement between the third drive member 43 and the first drive member 3. When the first driving member 3 is driven from its initial position and moves along the first direction, the distal guide surface 31 of the first driving member 3 abuts against the abutting surface 431 of the third driving member 43, driving the first gear 41 to move along the third direction and separate from the tooth surface 61 of the transmission component 6. The elastic member 44 undergoes elastic deformation, causing the transmission mechanism 4 to enter the second state from the first state. After subsequent steps are performed to return the transmission component 6 to its initial position, the first driving member 3 can be driven to separate from the third driving member 43. After the third driving member 43 loses the driving force of the first driving member 3, the first gear 41 can return to the first state of meshing with the transmission component 6 under the action of the elastic deformation restoring force of the elastic member 44.

[0069] like Figures 3-6As shown, the reset mechanism 20 further includes an operating mechanism 2. The operating mechanism 2 is configured to drive the first driving member 3 to move along a first direction when operated to rotate at least partially, and to drive the transmission member 6 to move along a second direction when operated to move at least partially along a second direction. The operating mechanism 2 includes an operating member 21 and a second driving member 22. The operating member 21 includes a first rod 211 and a second rod 212. The second rod 212 is rotatably connected to the second end of the first rod 211 via a pivot 213, and the second driving member 22 is disposed at the first end of the first rod 211. When it is necessary to use the operating member 21 to drive the transmission member 6 to reset, the second rod 212 is set at a certain angle (e.g., about 90°) to the first rod 211. The user can hold the second rod 212 and operate the second rod 212 to rotate the first rod 211. The distal end of the first rod 211 enters the interior of the housing 1 through the first opening 11 of the housing 1 and cooperates with the transmission member 6. When the operating component 21 is not in use, it can be stored as a whole and inserted into the receiving cavity 14 of the housing 1 through the third opening 13 of the housing 1. The operating component 21 has a working state when connected to the transmission component 6 and a stored state when stored in the receiving cavity 14. Figure 5 The example shows the operating component 21 in both the use state and the storage state.

[0070] like Figures 7-9As shown, the distal end of the second driving member 22 abuts against the proximal mating surface 32 of the first driving member 3. The distal surface of the second driving member 22 is preferably a plane facilitating abutment, but this application is not limited to this. In other alternative embodiments, the distal end of the second driving member 22 and the proximal end of the first driving member 3 can be further fixed by means of embedded connection, fastener connection, etc. The second driving member 22 is an annular ring sleeved on the distal end of the first rod 211, and forms a threaded engagement with the first rod 211. Specifically, the inner surface of the second driving member 22 is provided with an internal thread 221, and the outer surface of the first rod 211 is provided with an external thread 2111 that mates with the internal thread 221. The first driving member 3 is circumferentially fixed and cannot rotate around the first rod 211. For example, a guide groove extending along the axial direction of the stapler is provided on the inner wall of the first opening 11 of the housing 1, and the second driving member 22 is partially embedded in the guide groove, so that the second driving member 22 can only move along the axial direction of the stapler and cannot rotate. When the first rod 211 rotates, it can drive the second driving member 22 to move along the first direction or the second direction. Specifically, in the initial state, when the first rod 211 rotates along the first rotation direction, it can drive the second driving member 22 to move along the first direction. The second driving member 22 abuts against the proximal mating surface 32 of the first driving member 3 and drives the first driving member 3 to move along the first direction. The first driving member 3 cooperates with the abutting surface 431 of the third driving member 43 to drive the first gear 41 to move along the third direction, so that the first gear 41 separates from the tooth surface 61 of the transmission component 6, and the transmission mechanism 4 enters the second state from the first state. When the first rod 211 rotates along the second rotation direction, it can drive the second driving member 22 to move along the second direction. Depending on the direction of the thread setting, the first rotation direction can be clockwise or counterclockwise.

[0071] like Figures 8-10As shown, the operating mechanism 2 is connected to the proximal end of the transmission component 6. When the operating mechanism 2 is configured to be operated and at least partially moved along the second direction, it drives the transmission shaft 60 to move along the second direction. Specifically, the first end (distal end) of the first rod 211 is provided with a first connecting portion 2112, and the proximal end of the transmission component 6 is provided with a second connecting portion 62. The first connecting portion 2112 and the second connecting portion 62 form a rotatable but non-axial connection of the transmission component 6. Therefore, when the user drives the first rod 211 to rotate by operating the second rod 212, the rotation of the first rod 211 will not drive the rotation of the transmission component 6. During the process of the first driving member 3 driving the transmission mechanism 4 from the first state to the second state by rotating the first rod 211, the position and state of the transmission component 6 will not change. However, when the first rod 211 moves along the second direction, the transmission component 6 can be driven to move along the second direction through the connection of the first connecting portion 2112 and the second connecting portion 62.

[0072] In this embodiment, the first connecting portion 2112 includes a tapered segment 2113 and a connecting segment 2114, and the second connecting portion 62 includes a snap-fit ​​portion 621 and a receiving portion 622. The maximum outer diameter of the tapered segment 2113 is larger than the outer diameter of the connecting segment 2114. The tapered segment 2113 enters the receiving portion 622, and the connecting segment 2114 engages with the snap-fit ​​portion 621. When the first rod 211 rotates, the tapered segment 2113 rotates in the receiving portion 622, and the connecting segment 2114 rotates in the snap-fit ​​portion 621. When the first rod 211 is operated to move in the proximal direction along the second direction, the proximal end face of the tapered segment 2113 engages with the snap-fit ​​portion 621, thereby driving the transmission component 6 to move in the second direction. Further, the snap-fit ​​portion 621 or the tapered segment 2113 has a certain elasticity. When the user applies a first force along the second direction to the first rod 211, the first force is insufficient to overcome the force resisting elastic deformation of the locking part 621 or the tapered section 2113. The first rod 211 will not separate from the transmission component 6 and can drive the transmission component 6 to move together along the second direction. When the user applies a second force along the second direction to the first rod 211, and the second force is sufficient to overcome the force resisting elastic deformation of the locking part 621 or the tapered section 2113, the first connecting part 2112 disengages from the second connecting part 62. The first rod 211 separates from the transmission component 6 and can be housed in the receiving cavity 14 of the housing 1. Alternatively, a limiting structure is provided on the proximal side of the initial position of the transmission component 6. When the proximal end of the transmission component 6 abuts against the limiting structure and applies a force along the second direction to the first rod 211, the first connecting part 2112 disengages from the second connecting part 62.

[0073] Furthermore, in order to reduce the volume of the receiving cavity 14 in the housing 1, the second rod 212 of the operating member 21 can be housed inside the first rod 211, thereby reducing the volume occupied by the operating member 21 when housed. Figures 11-13 The process of retracting the second rod 212 of the operating member 21 is illustrated. The second rod 212 is rotatably connected to the proximal end of the first rod 211 via a pivot 213. The first rod 211 has an internal cavity, and the second rod 212 has a guide groove 2121 on one side. The pivot 213 at least partially enters the guide groove 2121 and is movable along the extending direction of the guide groove 2121. When it is necessary to retract the second rod 212, the second rod 212 is first operated to rotate it relative to the first rod 211 until it is substantially parallel to the first rod 211, i.e. Figure 12 The state shown. Then, the second rod 212 is pushed into the internal cavity of the first rod 211. The pivot 213 slides along the guide groove 2121, causing the second rod 212 to at least partially enter the cavity of the first rod 211, reaching... Figure 13 The state shown is illustrated here. Two pivots 213 are exemplarily shown, with two guide grooves 2121 corresponding to the upper and lower sides of the second rod 212, respectively. In another embodiment, the pivot 213 may also be a shaft passing through the second rod 212, and the guide grooves 2121 may pass through the upper and lower sides of the second rod 212.

[0074] The following is combined Figure 4 , Figure 6 , Figure 14 and Figure 15 This section details the usage process of the reset device.

[0075] like Figure 4 and Figure 6As shown, in the initial state, the second driving member 22, the first driving member 3, and the transmission member 6 are all in their initial positions. The operating member 21 is housed in the receiving cavity 14 of the housing 1, and the second rod 212 is housed in the internal cavity of the first rod 211. The transmission mechanism 4 is in the first state, with the first gear 41 meshing with the tooth surface 61 of the transmission member 6 and the second gear 52, respectively. In this state, when the stapler needs to be fired, the motor 51 is started, causing the output shaft of the motor 51 to rotate around a specific direction. The first gear 41 can drive the transmission member 6 to move in the first direction, thereby driving the distal actuator to complete the suturing and cutting actions, and the transmission member 6 reaches the firing position. After the stapler is fired, when the output shaft of the driving motor 51 rotates in the opposite direction, the second gear 52 can drive the transmission member 6 to retract in the second direction to reset it. When the electric reset function fails, a reset device can be used to manually reset the transmission member 6. The manual reset specifically includes two steps: separating the transmission mechanism 4 and retracting the transmission member 6.

[0076] Separation of transmission mechanism 4: First, the user removes the operating member 21 from the receiving cavity 14, removes the second rod 212 from the first rod 211, and rotates the second rod 212 so that the second rod 212 and the first rod 211 form a certain angle. The user inserts the first connecting part 2112 of the first rod 211 into the second connecting part 62 of the transmission component 6. The second driving member 22 abuts against the proximal mating surface 32 of the first driving member 3, and the external thread 2111 of the first rod 211 mates with the internal thread 221 of the second driving member 22. Operating the second lever 212 causes the first lever 211 to move along the first rotation direction. The first lever 211 drives the second driving member 22 to move along the first direction. The second driving member 22 abuts against the first driving member 3, driving the first driving member 3 to move along the first direction. The first driving member 3 abuts against the abutting surface 431 of the third driving member 43, thereby driving the first gear 41 to move along the third direction. This causes the first gear 41 to separate from the transmission component 6, and the elastic member 44 undergoes elastic deformation. The transmission mechanism 4 then enters the second state. After the first gear 41 separates from the transmission component 6, the movement of the transmission component 6 will not interfere with the first gear 41.

[0077] Retraction of transmission component 6: After the first gear 41 is separated from the transmission component 6, the user operates the second lever 212 to drive the first lever 211 to move in the second direction towards the proximal side. The first connecting part 2112 of the first lever 211 drives the second connecting part 62 of the transmission component 6 to move in the second direction, thereby driving the transmission component 6 to move in the second direction, so that the transmission component 6 retracts from the firing position to the initial position, realizing the retraction and reset of the transmission component 6.

[0078] After the transmission component 6 has retracted, the user can apply a relatively large force along the second direction to the second rod 212, causing the distal end of the first rod 211 to separate from the proximal end of the transmission component 6, thus removing the operating element 21 from the first opening 11. The second rod 212 is then rotated and inserted into the internal cavity of the first rod 211. The operating element 21 is then placed into the receiving cavity 14 of the housing 1 through the third opening 13, completing the storage of the operating element 21.

[0079] The above embodiments exemplify the structure and shape of each component, but are not intended to limit the scope of protection of this application. In other embodiments, the first driving member may also have other shapes, such as a protrusion, a boss, etc. The operating member may only include a first rod and not a second rod. A threadless operating part may be provided at the proximal end of the first rod, and the first rod can be directly rotated to drive the second driving member to move along the first direction. The transmission mechanism may include one or more first gears. When the transmission mechanism includes multiple first gears, when the transmission mechanism enters the second state from the first state, the first gear that was previously engaged with the transmission component is separated from the transmission component. The end face of the first gear may not be provided with a third driving member, and the first driving member may directly engage with the first gear. Alternatively, the third driving member may be a protrusion fixed to the end face of the first gear. The output shaft of the motor may not be parallel to the first gear shaft of at least part of the first gear. And when the first driving member moves along the first direction to drive the first gear, the direction of movement of the first gear is not limited to a third direction perpendicular to the first direction, but can be directed away from the transmission component. The elastic element is not limited to a compression spring, but can also be a tension spring disposed between the first gear and the transmission component, a spring sheet disposed on the upper or lower end face of the first gear, an elastic pad, or other components.

[0080] Figure 16 This is a schematic diagram illustrating the structure of the operating mechanism and the first driving member cooperating in another embodiment of this application. This embodiment is similar to... Figures 1-15The difference in the illustrated embodiment is that the second driving member 22 of the operating mechanism 2 is fixed to the housing 1, and the first end (distal end) of the first rod 211 of the operating mechanism 2 abuts against the first driving member 3. When the second rod 212 is operated to drive the first rod 211 to rotate, since the second driving member 22 is fixedly installed, the first rod 211 advances along the first direction (S1 direction) under the cooperation of the external thread 2111 and the internal thread 221, driving the first driving member 3 to advance along the first direction (S1 direction). In this embodiment, the thread pitch of the external thread on the outer surface of the first rod 211 can be increased as needed. Thus, when the second rod 212 is operated to drive the first rod 211 to rotate, the first rod 211 advances a longer distance for each revolution of the second rod 212, resulting in a faster advance speed of the first driving member 3 and faster manual reset.

[0081] The structure of other components in this embodiment can be adopted. Figures 1-15 The structure of the corresponding component in the embodiment, or the use of Figures 1-15 The corresponding component's deformed structure in the embodiment.

[0082] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of this application and should not be construed as limiting the specific implementation of this application to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of this application, and all such modifications or substitutions should be considered within the scope of protection of this application.

Claims

1. A resetting device for surgical instruments, the resetting device comprising a transmission component (6) movable in a first direction and a second direction, an electric mechanism (5) providing power for the movement of the transmission component (6), and a transmission mechanism (4) detachably connecting the transmission component (6) and the electric mechanism (5), wherein the first direction and the second direction are opposite, characterized in that, The reset device further includes: The reset mechanism (20) includes a first drive member (3) and an operating mechanism (2). The operating mechanism (2) includes a first rod (211) and a second drive member (22). The first end of the first rod (211) is threadedly engaged with the second drive member (22). The second drive member (22) at least partially abuts against the first drive member (3). The first rod (211) and the transmission component (6) form a detachable connection, and the two can rotate relative to each other but cannot move relative to each other along the axial direction of the transmission component (6). When the first rod (211) is operated to rotate in the first rotation direction, the second driving member (22) drives the first driving member (3) to move in the first direction, so as to drive the transmission mechanism (4) to separate from the transmission component (6). Then, when the first rod (211) is operated to move in the second direction, the transmission component (6) is driven to move in the second direction.

2. The reset device according to claim 1, characterized in that, The transmission mechanism (4) is configured to be driven by the first drive member (3) to move along a third direction to separate from the transmission member (6), wherein the third direction is perpendicular to the first direction.

3. The reset device according to claim 2, characterized in that, The transmission mechanism (4) includes a first gear (41). When the transmission mechanism (4) is in a first state, the first gear (41) meshes with the electric mechanism (5) and the transmission component (6) respectively. When the transmission mechanism (4) is in a second state, the first gear (41) is separated from the transmission component (6). The transmission mechanism (4) further includes a third driving member (43), which abuts against one end face of the first gear (41) and also abuts against the first driving member (3).

4. The reset device according to claim 3, characterized in that, The surface (431) of the third driving member (43) that abuts against the first driving member (3) is an inclined surface or an arc surface.

5. The reset device according to claim 1, characterized in that, The first rod (211) is at least partially provided with an external thread (2111), and the second drive member (22) is at least partially provided with an internal thread (221) that mates with the external thread (2111).

6. The reset device according to claim 5, characterized in that, The operating mechanism (2) further includes a second rod (212), which is rotatably connected to the second end of the first rod (211) via a pivot (213); The first rod (211) has a cavity inside, and the second rod (212) has a guide groove (2121) on one side. The pivot (213) enters at least partially into the guide groove (2121) and can move along the extension direction of the guide groove (2121) so that the second rod (212) enters at least partially into the cavity of the first rod (211).

7. The reset device according to claim 1, characterized in that, The transmission component (6) includes a transmission shaft (60), and the first direction and the second direction are respectively the axial directions along the transmission shaft (60); The first rod (211) is connected to the drive shaft (60), and when the first rod (211) is configured to be operated to move in the second direction, it drives the drive shaft (60) to move in the second direction; The first rod (211) is provided with a first connecting part (2112), and the transmission component (6) is provided with a second connecting part (62). The first connecting part (2112) and the second connecting part (62) form a rotatable connection that cannot move along the axial direction of the transmission shaft (60).

8. The reset device according to claim 7, characterized in that, It also includes a housing (1), and the transmission component (6) and the transmission mechanism (4) are at least partially inserted into the interior of the housing (1); The first rod (211) is detachably connected to the transmission shaft (60), and the housing (1) is also provided with a receiving cavity (14). After the first rod (211) is separated from the transmission component (6), it can at least partially enter the receiving cavity (14).

9. A surgical instrument, characterized in that, The reset device includes any one of claims 1 to 8.

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