Manually operable anastomosis device in case of power failure

Abstract

The present invention discloses an anastomotic instrument that can be manually operated when the electric mode is disabled, and includes a housing, an actuator, a trigger control unit, a swing control unit, a first manual member, and a connecting block, wherein the trigger control unit includes a first drive motor and a gear set, and the swing control unit includes a second drive motor and a transmission component, the connecting block is driven by the first manual member to displace radially, and a first stopper and a second stopper are provided on the distal side of the connecting block, which are displaced radially synchronously with the first manual member, and the radial displacement of the first stopper interrupts power transmission between the first drive motor and the actuator, and the radial displacement of the second stopper interrupts power transmission between the second drive motor and the actuator. In the disabled mode, the first manual member simultaneously releases electrical control of the actuators of the trigger control unit and the swing control unit, allowing the actuators to return to their initial positions for safe withdrawal, and the actuators can also be manually operated via the second manual member to complete the surgery.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority to a Chinese patent application filed with the State Intellectual Property Office of the People's Republic of China on November 21, 2022, bearing application number 202211452627.1 and entitled "Manually operable anastomosis device when the electric mode stops functioning," the entire contents of which are incorporated herein by reference. [Technical Field]

[0002] The present invention relates to the technical field of medical devices, and more particularly to an anastomosis instrument that can be manually operated in case the powered mode fails. [Background technology]

[0003] An anastomosis instrument is a common medical device that grasps tissue and performs incision and anastomosis. It is mainly divided into manual anastomosis instruments and electric anastomosis instruments. Electric anastomosis instruments are powered by electrical energy and are becoming increasingly popular and used due to their stability and convenience of use. In actual use, an electric anastomosis instrument needs to electrically control its end actuator to bend and rotate in order to grasp the tissue that needs to be sutured, and after the incision and anastomosis are completed, it returns to its initial position and then withdraws.

[0004] However, electric anastomotic instruments can sometimes stop functioning due to a lack of battery power or motor failure. If such an emergency occurs during surgery, the electric anastomotic instrument cannot return to its initial position and exit the patient's body, making it impossible to continue the surgery. Furthermore, the anastomotic instrument must be removed during open surgery, which not only interrupts the surgery but also causes secondary injury to the patient. Some existing anastomotic instruments, as disclosed in patent application publication number CN113796906A, are equipped with a retraction mechanism to assist in withdrawal after the anastomotic instrument stops functioning. However, such anastomotic instruments can only ensure safe withdrawal, but do not allow the surgery to continue. Therefore, if an anastomotic instrument stops functioning during surgery, it must be replaced and the surgery restarted, which takes time and effort, increases patient discomfort and surgical costs, and increases the difficulty of suturing in the second surgery.

[0005] Therefore, how to ensure normal operation of an anastomosis instrument in a shutdown mode has become an urgent issue to be solved. Summary of the Invention [Problem to be solved by the invention]

[0006] SUMMARY OF THE INVENTION It is an object of the present invention to overcome the deficiencies of the prior art by providing an anastomosis instrument that can be manually operated in the event that the powered mode fails. [Means for solving the problem]

[0007] The object of the present invention is achieved by the following technical solutions:

[0008] The manually operable anastomosis instrument when the electric mode is disabled includes a housing, an actuator provided at the distal end of the housing, a trigger control unit built into the housing for driving the actuator to close or anastomose, and a swing control unit for driving the actuator to swing, the trigger control unit including a first drive motor, a drive gear provided on a motor shaft of the first drive motor, and a gear set including a driven gear that meshes with the drive gear and transmits power to the actuator, and the swing control unit includes a second drive motor, a drive block screwed onto the motor shaft of the second drive motor. and a transmission component including a drive rod that receives an axial driving force from the drive block via the plug connection member and transmits it to the actuator, the transmission component including a first manual member and a connecting block, the proximal side of the connecting block being fitted with the first manual member and being driven by the first manual member to be displaced in the radial direction, the distal side of the connecting block being provided with a first stopper and a second stopper that are displaced in the radial direction synchronously with the connecting block, the first stopper being displaced in the radial direction to release the axial position restriction on the driven gear, so that the driven gear is displaced in the axial direction by the force and disengages from the drive gear, thereby interrupting the power transmission between the first drive motor and the actuator, and at the same time, the second stopper being displaced in the radial direction to drive the plug connection member to move synchronously in the radial direction, so that the drive block is disengaged from the drive rod, thereby interrupting the power transmission between the second drive motor and the actuator.

[0009] In some embodiments, the first manual member is fitted into the end cap, the proximal end of the first manual member is a drive unit that manually drives the first manual member to rotate on its axis, and an insertion rod is eccentrically provided on the distal end face of the first manual member, and the insertion rod is inserted into the proximal side of the connecting block to convert rotational movement of the first manual member into radial movement of the connecting block.

[0010] In some embodiments, the trigger control further includes a lead screw and a moving member, the moving member threadedly engaged with the threads of the lead screw, the moving member fixedly coupled to the main shaft, the lead screw rotatingly driving the moving member, thereby driving the main shaft to move axially, and a driven gear movably fitted to the lead screw, the axis of the driven gear driving the lead screw via a spline to rotate synchronously.

[0011] In some embodiments, the lead screw is fitted with a spring that abuts against the distal end face of the driven gear, and the spring constantly provides a driving force to the driven gear that drives the driven gear to move axially towards the distal end of the lead screw.

[0012] In some embodiments, the top end of the first stopper is fixedly connected to the connecting block, the bottom of the first stopper fits the outer contour of the lead screw, and a fixed block is provided at the proximal end of the lead screw, and in an initial state, the bottom of the first stopper is inserted between the proximal end face of the driven gear and the distal end face of the fixed block to regulate the axial position of the driven gear, thereby maintaining the driven gear and the driven gear in a constantly meshed state, and in a second state, the first stopper moves radially so that its bottom separates from the driven gear and the fixed block, and the driven gear is driven by a spring to move axially and separate from the drive gear.

[0013] In some embodiments, the end cap is fitted with a second manual member, which is fixedly coupled to the proximal end of the lead screw such that rotation of the second manual member can drive the lead screw to rotate synchronously.

[0014] In some embodiments, a through hole is provided at the connection point between the drive block and the drive rod, the top of the plug connection member is inserted into the groove at the top of the drive block, the rod portion of the plug connection member is inserted into the through hole to connect the drive block and the drive rod, and the side of the plug connection member is connected to the second stopper.

[0015] In some embodiments, the bottom end of the side of the plug connection member has an engagement claw protruding outward, and the second stopper has an elongated engagement groove parallel to the drive rod, and the engagement claw is slidably inserted into the elongated engagement groove, so that the plug connection member is engaged with the second stopper. axial movement relative to the

[0016] In some embodiments, the second stopper is an elongated extension plate having a drive slot extending obliquely at a proximal end, and a drive pin is fixedly provided on the side wall of the connecting block, the drive pin is slidably inserted into the drive slot, and the drive pin drives the second stopper to move radially synchronously with the radial movement.

[0017] In some embodiments, the second stopper further includes at least one driven slot perpendicular to the drive slot, and a positioning pin is slidably inserted into the driven slot, and the positioning pin is fixedly attached to the housing. [Effects of the Invention]

[0018] The beneficial effects of the present invention are mainly as follows: The connecting block, the first stopper, and the second stopper are connected to each other, and a first manual member is provided to rotate and drive the connecting block to move radially. The first stopper and the second stopper are driven by the connecting block to move radially synchronously, thereby simultaneously releasing the power transmission between the first drive motor and the actuator, and the second drive motor, so that even in the disabled mode, the actuator can return to its initial position and safely exit, ensuring safety in use. At the same time, the actuator can be manually operated by rotating the second manual member instead of the first drive motor, so that even in the disabled mode, the actuator can continue to complete tissue anastomosis, ensuring smooth progress and a high completion rate of the surgery, and avoiding the need for redundant operations such as performing two surgeries. [Brief explanation of the drawings]

[0019] The technical solution of the present invention will be further described below with reference to the drawings. [Figure 1] FIG. 2 is a front view of the internal structure in the initial state in the embodiment of the present invention. [Figure 2] FIG. 2 is a front view of the internal structure in a shutdown mode in an embodiment of the present invention. [Figure 3] FIG. 2 is a schematic diagram of the internal structure in a shutdown mode according to an embodiment of the present invention. [Figure 4] FIG. 4 is an enlarged schematic view of part A in FIG. 3. [Figure 5] FIG. 2 is a schematic diagram of the internal structure of the opposite side in the initial state in the embodiment of the present invention. [Figure 6] FIG. 2 is a front view of the internal structure in the initial state in the embodiment of the present invention. [Figure 7] FIG. 2 is a top view of a portion of the structure in a shutdown mode in an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0020] The present invention will be described in detail below with reference to specific embodiments shown in the drawings. However, these embodiments do not limit the present invention, and any structural, method, or functional changes made by those skilled in the art based on these embodiments are within the scope of protection of the present invention.

[0021] In the description of the solution, the orientations or positional relationships indicated by terms such as "center," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," "outer," "proximal end," and "distal end" are based on the orientations or positional relationships shown in the drawings and are intended merely to facilitate explanation and simplify the description. They do not necessarily indicate or imply that the devices or components shown have a specific orientation or are configured or operated in a specific orientation, and therefore cannot be understood as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used merely for explanation and cannot be understood as indicating or implying relative importance. In the description of the solution, the operator is used as the reference, and the direction closer to the operator is the proximal end, and the direction away from the operator is the distal end.

[0022] As shown in FIGS. 1 to 7 , the present invention discloses an anastomosis instrument that can be manually operated when the electric mode has stopped functioning, the anastomosis instrument including a housing 1, an actuator provided at the distal end of the housing 1, a trigger control unit built into the housing 1 for driving the actuator to close or anastomose, and a swing control unit for driving the actuator to swing, the trigger control unit including a first drive motor 200, a drive gear 201 provided on the motor shaft of the first drive motor 200, and a gear set including a driven gear 202 that meshes with the drive gear 201 and transmits power to the actuator, and the swing control unit including a second drive motor 300, a drive block 301 screwed onto the motor shaft of the second drive motor 300, and a drive rod 303 that receives axial driving force from the drive block 301 via a plug connection member 302 and transmits it to the actuator. The drive motor 200 includes a transmission component, and includes a first manual member 5 and a connecting block 4, a proximal side of the connecting block 4 is fitted with the first manual member 5 and is driven by the first manual member 5 to be displaced radially, and a distal side of the connecting block 4 is provided with a first stopper 401 and a second stopper 402 that are displaced radially synchronously therewith, the first stopper 401 releasing the axial position restriction on the driven gear 202 by radial displacement, causing the driven gear 202 to be displaced axially under force and disengage from the drive gear 201, thereby cutting off the power transmission between the first drive motor 200 and the actuator, and at the same time, the second stopper 402 driving the plug connection member 302 to move radially synchronously by radial displacement, causing the drive block 301 to disengage from the drive rod 303, thereby cutting off the power transmission between the second drive motor 300 and the actuator.

[0023] The actuator in this solution includes components for completing the incision and anastomosis operations, such as jaws, staple cartridge base, anvil base, redirection pull tab, blade, actuation tube, etc., which are prior art and not the focus of the present invention, so detailed description will be omitted here.

[0024] As shown in FIGS. 3 and 4 , the first manual member 5 is fitted into the end cap 101. The proximal end of the first manual member 5 is a drive unit that manually drives the first manual member 5 to rotate on its axis. An insertion rod 501 is eccentrically mounted on the distal end surface of the first manual member 5. The insertion rod 501 is inserted into the proximal side of the connection block 4 and converts the rotational movement of the first manual member 5 into the radial movement of the connection block 4. In some possible embodiments, the first manual member 5 is a rotatable column that does not protrude outward from the end cap 101. The space between the end cap 101 and the housing 1 is used to accommodate a battery. When the battery is in a normal state, the first manual member 5 is hidden by the battery, preventing accidental manual touches. By fitting the first manual member 5 into the end cap 101, its position is kept relatively fixed and does not affect the normal use of the anastomosis instrument. The drive portion is a recess formed on the distal end surface of the first manual member 5, and the inner wall of the recess has a non-circular structure. In some possible embodiments, the inner wall of the recess may be hexagonal, which makes it easy to insert and rotate a tool. In other possible embodiments, the first manual member 5 can drive the connecting block 4 to move radially using other possible motion methods. For example, by providing a vertical slide groove on the end cap 101, the first manual member 5 can directly drive the connecting block 4 to move radially synchronously by radial movement.

[0025] The trigger control section further includes a lead screw 203 and a moving member 204, the moving member 204 being threadedly engaged with the threaded portion of the lead screw 203, the moving member 204 being fixedly connected to the main shaft 6, the lead screw 203 driving the moving member 204 by rotation, thereby driving the main shaft 6 to move in the axial direction, and driving the main shaft 6 to control the closing operation and the anastomosis operation of the actuator. The driven gear 202 is movably fitted to the lead screw 203. The shaft of the driven gear 202 drives the lead screw 203 via a spline so as to rotate synchronously.

[0026] Furthermore, a spring 205 abutting against the distal end surface of the driven gear 202 is fitted to the lead screw 203, and the spring 205 always applies a driving force to the driven gear 202 to drive the driven gear 202 to move axially toward the proximal end of the lead screw 203. In some possible embodiments, the spring 205 has a pre-compression amount, so that the elastic force of the spring 205 always applies a driving force to the driven gear 202 to move the driven gear 202 toward the proximal end of the lead screw 203. In other possible embodiments, the spring 205 may be replaced by a tension spring, which is provided on the proximal end surface of the driven gear 202 and applies a tension force to the driven gear 202 to move it toward the proximal end of the lead screw 203.

[0027] As shown in Figures 1 and 2, the top end of the first stopper 401 is fixedly connected to the connecting block 4, and a fixed block 206 is provided at the proximal end of the lead screw 203. In the initial state, the bottom of the first stopper 401 is inserted between the proximal end face of the driven gear 202 and the distal end face of the fixed block 206 to regulate the axial position of the driven gear 202, thereby keeping the driven gear 202 and the drive gear 201 constantly meshed. In the second state, the first stopper 401 moves radially so that its bottom separates from the driven gear 202 and the fixed block 206, and the driven gear 202 is driven by the spring 205 to move axially and separate from the drive gear 201. In some possible embodiments, the bottom of the first stopper 401 fits the outer contour of the lead screw 203, so that the first stopper 401 fits tightly against the lead screw 203, ensuring the stability of the first stopper 401 under normal use conditions.

[0028] Furthermore, the end cap 101 is fitted with a second manual member 7, which is fixedly coupled to the proximal end of the lead screw 203, and the rotation of the second manual member 7 can drive the lead screw 203 to rotate synchronously. In some possible embodiments, the second manual member 7 may have a rod-like structure, and the proximal end surface of the second manual member 7 is recessed inward to form a recess into which a tool can be easily inserted for rotation.

[0029] By installing the first manual member 5 and the second manual member 7, if an emergency situation suddenly occurs in the anastomosis instrument of this solution during surgery, such as the electric mode of the trigger control unit ceasing to function due to a lack of battery power or a malfunction of the first drive motor 200, the first manual member 5 can be used to switch from electric mode to manual mode, and manual operation can be continued in manual mode to complete the surgery.

[0030] The specific operating principle is as follows: First, the first manual member 5 is rotated, which drives the connecting block 4 to move radially. This drives the connecting block 4 to synchronously move the first stopper 401 radially, releasing the axial position restriction of the driven gear 202. This causes the driven gear 202 to be driven by the spring 205 to move toward the proximal end of the lead screw 203 and separate from the drive gear 201, cutting off the power transmission from the first drive motor 200 to the lead screw 203. Then, the second manual member 7 is rotated, which drives the lead screw 203 to continue rotating and transmits power to the actuator, which continues to close the actuator and perform tissue anastomosis, ensuring the smooth progress of the surgery, avoiding redundant operations such as double surgery, and ensuring the success rate of the surgery. In this solution, the battery is accommodated between the end cap 101 and the housing 1. In the event of a malfunction, the battery needs to be removed and then connected and rotated via a connecting member that matches the first manual member 5 or the second manual member 7. The connecting member can be fixedly connected to the first manual member 5 or the second manual member 7, and can be manually operated. It may be any simple material, and as this is not the focus of the present solution, a detailed description will be omitted here.

[0031] As shown in the drawings, 2, 3 and 5, the swing control section has a through hole at the connection point between the drive block 301 and the drive rod 303, the top of the plug connection member 302 is inserted into the groove 3011 at the top of the drive block 301, the rod portion of the plug connection member 302 is inserted into the through hole to connect the drive block 301 and the drive rod 303, and the side of the plug connection member 302 is connected to the second stopper 402.

[0032] Specifically, the plug connection member 302 has an engagement claw 3021 protruding outward at the bottom end of its side, and the second stopper 402 has an elongated engagement groove 4021 parallel to the drive rod 303. The engagement claw 3021 is slidably inserted into the elongated engagement groove 4021, allowing the plug connection member 302 to move axially relative to the second stopper 402. Furthermore, due to the structure in which the second stopper 402 is connected to the plug connection member 302, the second stopper 402 always serves to limit the position of the plug connection member 302 in the radial direction, and by moving the plug connection member 302 in the radial direction, the connection between the drive block 301 and the drive rod 303 can be controlled, thereby controlling the connection between the second drive motor 300 and the actuator.

[0033] The operating principle of the swing control unit to control the actuator to swing is as follows: The distal end of the drive rod 303 is hook-shaped and is engaged with a connecting ring 304 slidably provided on the main shaft 6, and is further connected via the connecting ring 304 to a transmission rod 305 fixedly connected to the side of the connecting ring 304. The second drive motor 300 rotates its motor shaft to drive the drive block 301 to move in the axial direction, and the drive block 301 further drives the drive rod 303 and the transmission rod 305 to move axially synchronously, controlling the actuator to swing and move to the surgical site.

[0034] During surgery, the actuator usually needs to be swung to accurately align with the surgical site, and if the second drive motor 300 stops functioning due to reasons such as low battery power, the actuator needs to return to its initial position for safe exit, and therefore the connection between the second drive motor 300 and the actuator needs to be cut off.

[0035] 1 to 7, the second stopper 402 is a long extension plate for connecting the connection block 4 and the plug connection member 302. A driving slot 4022 extending at an angle is provided at the proximal end of the second stopper 402, and a driving pin 403 is fixedly provided on the side wall of the connection block 4. The driving pin 403 is slidably inserted into the driving slot 4022, and the driving pin 403 moves radially in synchronization with the connection block 4, and the radial movement drives the second stopper 402 to move radially in synchronization with the radial movement. In some possible embodiments, the driving slot 4022 may be inclined at 45° toward the proximal end of the second stopper 402.

[0036] To ensure the consistency of the synchronous movement between the distal end and the proximal end of the second stopper 402, the second stopper 402 is further provided with at least one driven slot 4023 perpendicular to the drive slot 4022, and a positioning pin 404 is slidably inserted into the driven slot 4023, and the positioning pin 404 is fixedly provided to the housing 1. In the illustrated embodiment, the second stopper 402 is provided with two driven slots 4023, and due to the structure in which the driven slots 4023 are perpendicular to the drive slots 4022, the connecting block 4 can drive the entire second stopper 402 to move synchronously in the radial direction.

[0037] In the present invention, the first manual member 5 is installed, and the rotation of the first manual member 5 drives the connecting block 4 to move radially, and the first stopper 401 and the second stopper 402 are driven by the connecting block 4 to move radially synchronously, thereby simultaneously releasing the power transmission between the first driving motor 200, the second driving motor 300 and the actuator. In the function-stop mode, the actuator can not only return to its initial position and safely exit, but also rotate the second manual member 7 to transmit power to the actuator instead of the first driving motor 200 to continue the tissue anastomosis, ensuring the smooth progress of the surgery. In addition, the structure is simple and the manufacturing cost is low, which is favorable for its widespread use.

[0038] This specification will be described based on embodiments, but each embodiment does not include only one independent technical solution, and such description of the specification is for the sake of clarity only, and those skilled in the art should view the specification as a whole, and should understand that the technical solutions in each embodiment can also be appropriately combined to form other embodiments that are understandable to those skilled in the art.

[0039] The series of detailed descriptions listed above do not limit the protection scope of the present invention, but are merely specific descriptions of the feasible embodiments of the present invention, and any equivalent embodiments or modifications made without departing from the technical process spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. Housing and an actuator disposed at a distal end of the housing; a trigger control incorporated in the housing for driving the actuator to close or anastomosing; a swing control unit for driving the actuator to swing, the trigger control unit includes a first drive motor, a drive gear provided on a motor shaft of the first drive motor, and a gear set including a driven gear that meshes with the drive gear and transmits power to the actuator, the swing control section includes a second drive motor, a drive block that is screwed onto a motor shaft of the second drive motor, and a transmission component that includes a drive rod that receives an axial drive force from the drive block via a plug connection member and transmits the axial drive force to the actuator, a first manual member and a connecting block, a proximal side of the connecting block being fitted with the first manual member and being driven by the first manual member to be displaced in a radial direction, and a first stopper and a second stopper being provided on a distal side of the connecting block, the first stopper and the second stopper being displaced in a radial direction in synchronization with the connecting block; the first stopper releases the axial position restriction on the driven gear by radial displacement, so that the driven gear is displaced axially under force and disengaged from the drive gear, thereby interrupting power transmission between the first drive motor and the actuator; At the same time, the second stopper drives the plug connection member to move radially synchronously by radial displacement, so that the driving block disengages from the driving rod, thereby interrupting the power transmission between the second driving motor and the actuator. An anastomosis instrument that can be manually operated when the electric mode stops functioning.

2. the first manual member is fitted into an end cap, and a proximal end of the first manual member is a drive unit that manually drives the first manual member to rotate on its axis; an insertion rod is eccentrically provided on a distal end surface of the first manual member, and the insertion rod is inserted into a proximal side of the connecting block to convert rotational movement of the first manual member into radial movement of the connecting block; The anastomotic instrument according to claim 1, which can be manually operated when the electric mode stops functioning.

3. The trigger control section further includes a lead screw and a moving member, the moving member being threaded onto the threaded portion of the lead screw, the moving member being fixedly connected to a main shaft, the lead screw driving the moving member by rotation, the main shaft being driven and moving in the axial direction, the driven gear being movably fitted onto the lead screw, and the axis of the driven gear driving the lead screw via a spline to rotate synchronously. The anastomotic instrument according to claim 2, which can be manually operated when the electric mode stops functioning.

4. a spring is fitted to the lead screw and abuts against a distal end surface of the driven gear, and the spring always applies a driving force to the driven gear to drive the driven gear to move axially toward the proximal end of the lead screw; The anastomotic instrument according to claim 3, which can be manually operated when the electric mode stops functioning.

5. The top end of the first stopper is fixedly connected to the connecting block, and a fixed block is provided at the proximal end of the lead screw. In an initial state, the bottom of the first stopper is fitted between the proximal end surface of the driven gear and the distal end surface of the fixed block to regulate the axial position of the driven gear, thereby causing the driven gear and the drive gear to constantly maintain a meshed state. In a second state, the first stopper moves in the radial direction so that the bottom separates from the driven gear and the fixed block, and the driven gear is driven by the spring to move in the axial direction and separate from the drive gear. The anastomotic instrument according to claim 4, which can be manually operated when the electric mode stops functioning.

6. a second manual member fitted to the end cap, the second manual member fixedly coupled to a proximal end of the lead screw, and the second manual member being capable of driving the lead screw to rotate synchronously with the rotation of the second manual member; The anastomotic instrument according to claim 3, which can be manually operated when the electric mode stops functioning.

7. a through hole is provided at the connection point between the drive block and the drive rod, the top of the plug connection member is inserted into the recess at the top of the drive block, the rod portion of the plug connection member is inserted into the through hole to connect the drive block and the drive rod, and the side of the plug connection member is connected to the second stopper; The anastomotic instrument according to claim 1, which can be manually operated when the electric mode stops functioning.

8. The plug connection member has an engagement claw protruding outward at the bottom end of its side, and the second stopper has an elongated engagement groove parallel to the drive rod. The engagement claw is slidably inserted into the elongated engagement groove, allowing the plug connection member to move axially relative to the second stopper. The anastomotic instrument according to claim 7, which can be manually operated when the electric mode stops functioning.

9. The second stopper is a long extension plate having a drive slot extending at an angle at the proximal end, and a drive pin is fixedly provided on the side wall of the connecting block, and the drive pin is slidably inserted into the drive slot, and the drive pin drives the second stopper to move radially synchronously by moving radially. The manually operable anastomosis instrument according to claim 8, wherein the anastomosis instrument is operated in the event that the electric mode is disabled.

10. The second stopper is further provided with at least one driven elongated hole perpendicular to the driving elongated hole, a positioning pin is slidably inserted into the driven elongated hole, and the positioning pin is fixedly provided to the housing. The manually operable anastomosis instrument according to claim 9, wherein the anastomosis instrument is operated in the event of a malfunction of the electric mode.

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