An electric powered endoscope anastomat

Abstract

The application provides an electric endoscope anastomat, and relates to the technical field of cutting anastomosers.The device comprises a support, and further comprises: a jaw turning transmission mechanism, which is installed on the support and is driven by a main motor; a cutting knife feeding transmission mechanism, which is installed on the support and is in transmission connection with the jaw turning transmission mechanism; and a rack locking mechanism, which is installed between the jaw turning transmission mechanism and the cutting knife feeding transmission mechanism, and the jaw turning transmission mechanism and the cutting knife feeding transmission mechanism are sequentially driven through the rack locking mechanism. The application can realize the functions of jaw turning and cutting knife advancing / retracting through the driving of only one set of main motor, and the overall structure is simple and reliable.

Description

Technical Field

[0001] This invention relates to the field of cutting and anastomosis devices, and in particular to an electric laparoscopic anastomosis device. Background Technology

[0002] For operation modes involving manual closing and bending of the jaws, an electric endoscopic cutting stapler with electrically bent jaws has been developed. The bending action of the electric jaws is achieved by the structural transmission of the electric jaw itself, without the need for external assistance. However, in existing patents such as CN113100858A, an additional motor is required to drive the jaw bending action in addition to the main motor. Since the electric jaws need to rotate 360 ​​degrees in a circumferential direction, the small motor needs to be connected to the power supply through a commutator. This structure has low reliability and is prone to poor contact between the small motor controlling the bending mechanism and the power supply, causing the electric jaws to fail to bend.

[0003] Therefore, there is an urgent need for an electric laparoscopic stapler with a simple structure that can effectively improve structural reliability. Summary of the Invention

[0004] The purpose of this invention is to provide an electric endoscopic stapler that solves the technical problems of existing technologies that rely on an additional motor for steering and have low reliability. The various technical effects of the preferred solutions among the many technical solutions provided by this invention are detailed below.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] The present invention provides an electric laparoscopic stapler, including a support, and further comprising:

[0007] A jaw steering transmission mechanism is mounted on the bracket and driven by a main motor.

[0008] A cutting blade feed transmission mechanism is mounted on the bracket and is connected to the jaw steering transmission mechanism.

[0009] A rack and pinion locking mechanism is installed between the jaw steering transmission mechanism and the cutting blade feed transmission mechanism, and the jaw steering transmission mechanism and the cutting blade feed transmission mechanism are driven in an orderly manner through the rack and pinion locking mechanism.

[0010] Preferably, the jaw steering transmission mechanism includes:

[0011] A jaw bending drive gear is rotatably connected to the bracket and driven by the main motor;

[0012] A bending drive rack is slidably connected to the bracket and meshes with the jaw bending drive gear. The first end of the bending drive rack is connected to the jaw. A rack locking mechanism is installed between the bending drive rack and the cutting blade feed transmission mechanism.

[0013] Preferably, the cutting blade feed transmission mechanism includes:

[0014] A gear transmission unit is mounted on the bracket, and the main motor is connected to the jaw bending drive gear through the gear transmission unit.

[0015] A drive rack is slidably connected to the bracket and is connected to the gear transmission unit. A rack locking mechanism is installed between the bending drive rack and the drive rack.

[0016] Preferably, the rack and pinion locking mechanism includes:

[0017] A rack positioning pin is vertically slidably connected within the bracket, and is correspondingly disposed between the bending drive rack and the opposite side of the drive rack.

[0018] A compression spring is sleeved on the rack positioning pin and abuts between the rack positioning pin and the bracket.

[0019] Preferred options also include:

[0020] The first positioning groove and the second positioning groove are respectively formed on the bottom surface of the bending drive rack, and the top end of the rack positioning pin is correspondingly set with the first positioning groove or the second positioning groove.

[0021] The third positioning groove is formed on the top surface of the drive rack, and the bottom end of the rack positioning pin is correspondingly provided with the third positioning groove.

[0022] Preferably, the gear transmission unit includes:

[0023] A double input gear, which is rotatably connected to the bracket and is driven by the main motor;

[0024] A planetary gear assembly is driven between the jaw bending drive gear and the double input gear, and is also driven by the drive rack.

[0025] Preferably, the planetary gear assembly includes:

[0026] A planetary gear carrier, which is rotatably connected to the bracket and rotates synchronously with the jaw bending drive gear;

[0027] The internal and external gears are connected to the double input gear through several planetary gears. The outer sides of the internal and external gears are meshed with the drive rack. The several planetary gears are rotatably connected to the lower end face of the planetary gear support.

[0028] Preferred options also include:

[0029] A sleeve assembly is mounted on the bracket and connected to the bending drive rack and drive rack. The bending drive rack drives the jaws to rotate through the sleeve assembly, and the bending drive rack drives the cutting blade to move through the sleeve assembly.

[0030] Preferably, the sleeve assembly includes:

[0031] An inner sleeve, which is positioned on the bracket, and the jaws are hinged to the end of the inner sleeve away from the bracket;

[0032] The firing rod has an inner sleeve fitted over its outer side. The first end of the firing rod is connected to the first end of the drive rack, and the second end of the firing rod is connected to the cutting blade.

[0033] Preferred options also include:

[0034] A steering tie rod is slidably connected to the side wall of the inner sleeve. The first end of the steering tie rod is connected to the bending drive rack, and the second end of the steering tie rod is hinged to the jaws.

[0035] In existing technologies, electric laparoscopic anastomosis devices with electrically bent jaws have been developed. The bending action of the electric jaws is achieved by the structure of the electric anastomosis itself, without the need for external assistance. However, existing anastomosis devices require an additional motor besides the main motor to drive the jaw bending action. Since the electric jaws need to rotate 360 ​​degrees circumferentially, the small motor needs to be connected to the power supply through a commutator. This structure has low reliability and is prone to poor contact between the small motor controlling the bending mechanism and the power supply, causing the electric jaw bending to fail. In the technical solution provided by this invention, the jaw steering transmission mechanism mainly functions to drive the jaws to rotate in the correct direction through the main motor; the cutting blade feed transmission mechanism mainly functions to drive the cutting blade to move and complete the cutting action through the main motor; the rack and pinion locking mechanism mainly functions to lock either the jaw steering transmission mechanism or the cutting blade feed transmission mechanism. Through the drive of the main motor, the jaw steering transmission mechanism and the cutting blade feed transmission mechanism achieve orderly transmission, sequentially completing the steering and cutting actions. This application achieves both jaw rotation and cutter forward / backward functions through the drive of only one main motor. Overall, the structure is simple and reliable. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0038] Figure 2 This is a schematic diagram of the gear transmission unit of the present invention;

[0039] Figure 3 This is a cross-sectional schematic diagram of the bending drive rack and the drive rack of the present invention;

[0040] Figure 4 This is a schematic diagram showing the initial positions of the first and second positioning surfaces of the present invention;

[0041] Figure 5 This is a cross-sectional schematic diagram of the gear transmission unit of the present invention;

[0042] Figure 6 This is a schematic diagram of the sleeve assembly of the present invention;

[0043] Figure 7 This is a schematic diagram of the jaw bend of the present invention;

[0044] Figure 8 This invention relates to a single swing head pull tab fixing component;

[0045] Figure 9 This is a schematic diagram of the steering control seat of the present invention;

[0046] Figure 10 This is a schematic diagram of the steering fixing seat of the present invention;

[0047] Figure 11 This is a schematic cross-sectional view of the anastomosis device in its initial state according to the present invention;

[0048] Figure 12 yes Figure 11 A magnified view of part B in the diagram;

[0049] Figure 13 yes Figure 11 A magnified view of part C in the diagram;

[0050] Figure 14 This is a schematic diagram showing the position of the bending drive rack and the drive rack when the jaws of the present invention complete a rightward turn;

[0051] Figure 15 This is a schematic diagram of the cutting blade being driven when the jaws of the present invention are turned to the right;

[0052] Figure 16 This is a schematic diagram showing the position of the bending drive rack and the drive rack when the jaws of the present invention complete a leftward turn;

[0053] Figure 17 This is a schematic diagram of the cutting blade being driven when the jaws of the present invention are turned to the left;

[0054] Figure 18 This is a schematic diagram of the jaws of the present invention rotating to the right;

[0055] Figure 19 This is a schematic diagram of the jaws of the present invention turning left.

[0056] In the diagram: 11-Bracket; 121-Jaw bending drive gear; 1221-Planetary gear bracket positioning pin; 1222-Planetary gear bracket; 1223-Planetary gear; 123-Internal and external gears; 124-Double input gear; 131-Bending drive rack; 1312-First positioning groove; 1313-Second positioning groove; 132-Steering hook; 14-Drive rack; 142-Third positioning groove; 15-Main motor ; 161-Rack locating pin; 1611-First locating surface; 1613-Second locating surface; 162-Compression spring; 21-Firing lever; 22-Inner sleeve; 23-Swivel pull plate fixing component; 233-Circular arc groove; 24-Anchor seat; 25-Pin cartridge seat; 26-Steering control seat; 261-Location hole; 262-Location pin; 27-Steering tie rod; 28-Steering fixing seat; 281-Fixing pin; 29-Outer sleeve. Detailed Implementation

[0057] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0058] refer to Figure 1-19 A specific embodiment of the present invention provides an electric laparoscopic stapler, including a support 11, comprising:

[0059] The jaw steering transmission mechanism is mounted on the bracket 11 and driven by the main motor 15.

[0060] The cutting blade feed transmission mechanism is mounted on the bracket 11 and is connected to the jaw turning transmission mechanism.

[0061] A rack and pinion locking mechanism is installed between the jaw steering transmission mechanism and the cutting blade feed transmission mechanism, allowing the jaw steering transmission mechanism and the cutting blade feed transmission mechanism to drive each other in an orderly manner through the rack and pinion locking mechanism.

[0062] In existing technologies, an electric laparoscopic anastomosis device with electrically bent jaws has been developed. The bending action of the electric jaws is achieved by the structural transmission of the electric anastomosis itself, without the need for external assistance. However, in existing anastomosis devices, in addition to the main motor, an extra motor is required to drive the jaw bending action. Since the electric jaws need to rotate 360 ​​degrees circumferentially, the small motor needs to be connected to the power supply through a commutator. This structure has low reliability and is prone to poor contact between the small motor controlling the bending mechanism and the power supply, causing the electric jaw bending to fail. In this application, the jaw turning transmission mechanism mainly functions to drive the jaws to rotate in the correct direction through the main motor 15; the cutting blade feed transmission mechanism mainly functions to drive the cutting blade to move and complete the cutting through the main motor 15; the rack and pinion locking mechanism mainly functions to lock the jaw turning transmission mechanism or the cutting blade feed transmission mechanism. Through the drive of the main motor 15, the jaw turning transmission mechanism and the cutting blade feed transmission mechanism are driven in an orderly manner to complete the turning and cutting actions in sequence. This application can achieve two functions—jaw rotation and cutting blade forward / backward—through only one main motor 15. Overall, the structure is simple and reliable.

[0063] Further optimization of the design includes the following jaw steering transmission mechanism:

[0064] The jaw bending drive gear 121 is rotatably connected to the bracket 11 and is driven by the main motor 15.

[0065] A bending drive rack 131 is slidably connected to the bracket 11 and meshes with the jaw bending drive gear 121. The first end of the bending drive rack 131 is connected to the jaw. A rack locking mechanism is installed between the bending drive rack 131 and the cutting blade feed transmission mechanism.

[0066] By starting the main motor 15, the jaw bending drive gear 121 is driven to rotate, which in turn drives the bending drive rack 131 to move, thereby causing the jaws to rotate.

[0067] Further optimization of the design includes the following cutting tool feed transmission mechanism:

[0068] A gear transmission unit is mounted on the bracket 11. The main motor 15 is connected to the jaw bending drive gear 121 through the gear transmission unit.

[0069] The drive rack 14 is slidably connected to the bracket 11 and is connected to the gear transmission unit. The rack locking mechanism is installed between the bending drive rack 131 and the drive rack 14.

[0070] The main function of the rack and pinion locking mechanism is to lock the bending drive rack 131 or the drive rack 14. Under the transmission action of the gear transmission unit, the main motor 15 can drive the bending drive rack 131 and the drive rack 14 in an orderly manner, thereby completing the turning and cutting actions in sequence.

[0071] Further optimization of the design includes the following rack and pinion locking mechanism:

[0072] The rack positioning pin 161 is vertically slidably connected in the bracket 11, and the rack positioning pin 161 is correspondingly arranged between the opposite sides of the bending drive rack 131 and the drive rack 14.

[0073] Compression spring 162 is sleeved on rack positioning pin 161 and abuts between rack positioning pin 161 and bracket 11;

[0074] The first positioning groove 1312 and the second positioning groove 1313 are respectively opened on the bottom surface of the bending drive rack 131, and the top end of the rack positioning pin 161 is correspondingly set with the first positioning groove 1312 or the second positioning groove 1313.

[0075] The third positioning groove 142 is formed on the top surface of the drive rack 14, and the bottom end of the rack positioning pin 161 is correspondingly set with the third positioning groove 142.

[0076] In the initial state, the first positioning surface 1611 at the lower end of the rack positioning pin 161 is exactly located in the third positioning groove 142 on the drive rack 14, and the second positioning surface 1613 at the upper end of the rack positioning pin 161 is located below the bending drive rack 131 and is also located between the first positioning groove 1312 and the second positioning groove 1313.

[0077] Further optimization of the scheme, the gear transmission unit includes:

[0078] The double input gear 124 is rotatably connected to the bracket 11 and is configured to drive the main motor 15.

[0079] The planetary gear assembly is connected between the jaw bending drive gear 121 and the double input gear 124, and is also connected to the drive rack 14.

[0080] Further optimization of the design includes the following planetary gear assembly:

[0081] Planetary gear support 1222 is rotatably connected to support 11 and rotates synchronously with jaw bending drive gear 121;

[0082] The internal and external gears 123 are connected to the double input gear 124 via several planetary gears 1223. The outer sides of the internal and external gears 123 are meshed with the drive rack 14. The several planetary gears 1223 are rotatably connected to the lower end face of the planetary gear support 1222.

[0083] Further optimizations to the plan include:

[0084] The sleeve assembly is mounted on the bracket 11 and connected to the bending drive rack 131 and the drive rack 14. The bending drive rack 131 drives the jaws to rotate through the sleeve assembly, and the bending drive rack 131 drives the cutting blade to move through the sleeve assembly.

[0085] Start the main motor 15 to drive the bending drive rack 131, which in turn drives the jaws to rotate through the sleeve assembly. Under the action of the rack locking mechanism, after the jaws have rotated in the specified direction, the cutting blade is moved through the sleeve assembly to complete the cutting action.

[0086] Further optimization of the design, the bushing assembly includes:

[0087] Inner sleeve 22, the inner sleeve 22 is limited on the bracket 11, and the jaws are hinged to the end of the inner sleeve 22 away from the bracket 11;

[0088] The inner sleeve 22 is fitted on the outside of the firing rod 21. The first end of the firing rod 21 is connected to the first end of the drive rack 14, and the second end of the firing rod 21 is connected to the cutting blade.

[0089] Specifically, the cutting blade is moved by the firing lever 21.

[0090] Further optimizations to the plan include:

[0091] Steering tie rod 27 is slidably connected to the side wall of inner sleeve 22. The first end of steering tie rod 27 is connected to bending drive rack 131, and the second end of steering tie rod 27 is hinged to jaws.

[0092] Specifically, the jaws rotate around one end of the inner sleeve 22 via the steering tie rod 27.

[0093] Further optimizations to the plan include:

[0094] The components include: 23 (swivel pull plate fixing component), 24 (anchor pin seat), 25 (anchor pin holder), 26 (steering control seat), 28 (steering fixing seat), and 29 (outer tube).

[0095] Specifically, the firing lever 21 moves through the inner sleeve 22; the steering fixing seat 28 is fixedly connected to the inner sleeve 22; the fixing pin 281 on the steering fixing seat 28 is hinged to the positioning hole 261 on the steering control seat 26; the staple cartridge seat 25 is fixedly connected to the steering control seat 26; the pin abutment 24 is hinged to the staple cartridge seat 25, and the pin abutment 24 and the staple cartridge seat 25 form a jaw. The jaw in this application is an existing structure, which is opened or closed by manually driving the outer sleeve 29 to move axially. Specifically, the opening or closing... The principle and process will not be elaborated further; the fixing hole on the steering tie rod 27 is hinged to the positioning pin 262 on the steering control seat 26; the positioning pin on the sway head pull plate fixing member 23 moves through the fixing hole on the steering tie rod 27 and is fixedly sleeved in the positioning hole on another sway head pull plate fixing member 23, and the two sway head pull plate fixing members 23 assembled together are movably sleeved on the inner sleeve 22, that is, the sway head pull plate fixing member 23 assembly can drive the steering tie rod 27 to move back and forth along the axis of the inner sleeve 22.

[0096] The firing lever 21 is movably sleeved on the drive rack 14. The sleeve assembly is fixed to the drive rack 14 on the axis as a whole, but the outer sleeve 29 can rotate 360 ​​degrees around the drive rack 14. The arc drive ring 1321 on the steering hook 132 is precisely engaged in the arc groove 233 on the sway head pull plate fixing member 23 on the outer sleeve 29. When the sway head pull plate fixing member 23 rotates 360 degrees together with the outer sleeve 29, the arc drive ring 1321 on the steering hook 132 is always engaged in the arc groove 233 on the sway head pull plate fixing member 23. However, the sway head pull plate fixing member 23 can move back and forth along the axis of the outer sleeve 29 under the drive of the steering hook 132.

[0097] In this application, the bending process of the electric kiss's jaws is as follows:

[0098] In the initial state, the jaws formed by the pin holder 24 and the pin cartridge 25 coincide with the axis of the inner sleeve 22; the first positioning surface 1611 at the lower end of the rack positioning pin 161 is exactly located in the third positioning groove 142 on the drive rack 14, and the second positioning surface 1613 at the upper end of the rack positioning pin 161 is located between the first positioning groove 1312 and the second positioning groove 1313 on the bending drive rack 131, as shown. Figure 4 As shown.

[0099] When the jaws formed by the pin holder 24 and the pin cartridge 25 need to turn right, the output gear of the main motor 15 rotates counterclockwise. Through the power transmission of the double input gear 124, planetary gear 1223, planetary gear support 1222, planetary gear support positioning pin 1221, and jaw bending drive gear 121, the output gear of the main motor 15 drives the bending drive rack 131 to move to the left. The bending drive rack 131 then drives the positioning pin 262 on the steering control seat 26 to move to the left through the steering hook 132, the sway head pull plate fixing member 23, and the steering tie rod 27. The positioning hole 261 on the steering control seat 26 then rotates around the steering fixing... When the fixing pin 281 on the seat 28 rotates clockwise, the jaws formed by the pin seat 24 and the pin cartridge seat 25 complete the right turn. After the right turn is completed, the second positioning groove 1313 on the bending drive rack 131 is exactly above the second positioning surface 1613 on the rack positioning pin 161. During the right turn of the jaws, since the rack positioning pin 161 is always limited by the lower surface of the bending drive rack 131, and the third positioning groove 142 on the drive rack 14 is limited by the first positioning surface 1611 on the rack positioning pin 161, the drive rack 14 cannot move left or right, that is, the internal and external gears 123 meshing with the drive rack 14 are locked. After the jaws complete their right turn, the output gear of the main motor 15 continues to rotate counterclockwise. Since the bending drive rack 131 is limited by the bracket 11 and cannot move further to the left, the main motor 15 drives the drive rack 14 to move to the left through the transmission of the double input gear 124, planetary gear 1223, and internal and external gears 123. During the leftward movement of the drive rack 14, the third positioning groove 142 on the drive rack 14 drives the first positioning surface 1611 on the rack positioning pin 161 to overcome the force of the compression spring 162 and move upward. After completing the upward movement, the first positioning surface 1611 on the rack positioning pin 161 is exactly located on the upper surface of the drive rack 14, and the second positioning surface 1613 on the rack positioning pin 161 exactly enters the second positioning groove 1313 on the bending drive rack 131. That is, the rack positioning pin 161 completes the locking action on the bending drive rack 131. Figure 14-15 As shown in Figure 18.

[0100] When the jaws formed by the pin holder 24 and the pin cartridge seat 25 need to turn left, the output gear of the main motor 15 rotates clockwise. Through the power transmission of the double input gear 124, planetary gear 1223, planetary gear support 1222, planetary gear support positioning pin 1221, and jaw bending drive gear 121, the main motor output gear drives the bending drive rack 131 to move to the right. The bending drive rack 131 then drives the positioning pin 262 on the steering control seat 26 to move to the right through the steering hook 132, the sway head pull plate fixing member 23, and the steering tie rod 27. The positioning hole 261 on the steering control seat 26 then rotates around the steering fixing seat. When the fixing pin 281 on 28 rotates counterclockwise, the jaws formed by the pin seat 24 and the pin cartridge seat 25 complete the left turn. After the left turn is completed, the first positioning groove 1312 on the bending drive rack 131 is exactly above the second positioning surface 1613 on the rack positioning pin 161. During the left turn of the jaws, since the rack positioning pin 161 is always limited by the lower surface of the bending drive rack 131, and the third positioning groove 142 on the drive rack 14 is limited by the first positioning surface 1611 on the rack positioning pin 161, the drive rack 14 cannot move left or right, that is, the internal and external gears 123 meshing with the drive rack 14 are locked. After the jaws complete a leftward turn, the output gear of the main motor 15 rotates clockwise. Since the bending drive rack 131 is limited by the bracket 11 and cannot move further to the right, the main motor 15 drives the drive rack 14 to move to the left through the transmission of the upper double input gear 124, planetary gear 1223, and internal and external gears 123. During the leftward movement of the drive rack 14, the third positioning groove 142 on the drive rack 14 drives the first positioning surface 1611 on the rack positioning pin 161 to overcome the force of the compression spring 162 and move upward. After completing the upward movement, the first positioning surface 1611 on the rack positioning pin 161 is exactly located on the upper surface of the drive rack 14, and the second positioning surface 1613 on the rack positioning pin 161 exactly enters the first positioning groove 1312 on the bending drive rack 131. That is, the rack positioning pin 161 completes the locking action of the bending drive rack 131. Figure 16-17 As shown in Figure 19.

[0101] It should be noted that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., used herein to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the equipment or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0102] In this description, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0103] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An electric laparoscopic stapler, comprising a support (11), characterized in that... It also includes: a jaw steering transmission mechanism, which is mounted on the bracket (11) and driven by the main motor (15); a cutting blade feed transmission mechanism, which is mounted on the bracket (11) and connected to the jaw steering transmission mechanism; and a rack locking mechanism, which is installed between the jaw steering transmission mechanism and the cutting blade feed transmission mechanism, and the jaw steering transmission mechanism and the cutting blade feed transmission mechanism are driven in an orderly manner through the rack locking mechanism. The jaw steering transmission mechanism includes: a jaw bending drive gear (121), which is rotatably connected to the bracket (11) and driven by the main motor (15); and a bending drive rack (131), which is slidably connected to the bracket (11) and meshes with the jaw bending drive gear (121), with the first end of the bending drive rack (131) connected to the jaw. The cutting blade feed transmission mechanism includes: a gear transmission unit, which is mounted on the bracket (11), and the main motor (15) is connected to the jaw bending drive gear (121) through the gear transmission unit; a drive rack (14), which is slidably connected to the bracket (11) and is connected to the gear transmission unit; and a rack locking mechanism is installed between the bending drive rack (131) and the drive rack (14). The rack locking mechanism includes: a rack positioning pin (161), which is vertically slidably connected inside the bracket (11) and is correspondingly disposed between the opposite sides of the bending drive rack (131) and the drive rack (14); and a compression spring (162), which is sleeved on the rack positioning pin (161) and abuts against the rack positioning pin (161) and the bracket (11). It also includes: a first positioning groove (1312) and a second positioning groove (1313), the first positioning groove (1312) and the second positioning groove (1313) are respectively opened on the bottom surface of the bending drive rack (131), and the top end of the rack positioning pin (161) is correspondingly set with the first positioning groove (1312) or the second positioning groove (1313); a third positioning groove (142), the third positioning groove (142) is opened on the top surface of the drive rack (14), and the bottom end of the rack positioning pin (161) is correspondingly set with the third positioning groove (142).

2. The electric laparoscopic stapler according to claim 1, characterized in that... The gear transmission unit includes: a double input gear (124), which is rotatably connected to the bracket (11) and is driven by the main motor (15); and a planetary gear assembly, which is driven between the jaw bending drive gear (121) and the double input gear (124) and is driven by the drive rack (14).

3. The electric laparoscopic stapler according to claim 2, characterized in that... The planetary gear assembly includes: a planetary gear carrier (1222), which is rotatably connected to the bracket (11) and rotates synchronously with the jaw bending drive gear (121); and an inner and outer gear (123), which is connected to the double input gear (124) through a plurality of planetary gears (1223). The outer sides of the inner and outer gears (123) are meshed with the drive rack (14). The plurality of planetary gears (1223) are rotatably connected to the lower end face of the planetary gear carrier (1222).

4. The electric laparoscopic stapler according to claim 1, characterized in that... It also includes: a sleeve assembly, which is mounted on the bracket (11) and connected to the bending drive rack (131) and the drive rack (14). The bending drive rack (131) drives the jaws to rotate through the sleeve assembly, and the bending drive rack (131) drives the cutting blade to move through the sleeve assembly.

5. The electric laparoscopic stapler according to claim 4, characterized in that... The sleeve assembly includes: an inner sleeve (22) which is positioned on the bracket (11), and the jaws are hinged to the end of the inner sleeve (22) away from the bracket (11); and a firing rod (21) which is sleeved on the outside of the firing rod (21), with the first end of the firing rod (21) connected to the first end of the drive rack (14) and the second end of the firing rod (21) connected to the cutting blade.

6. The electric laparoscopic stapler according to claim 5, characterized in that... It also includes: a steering tie rod (27), which is slidably connected to the side wall of the inner sleeve (22), the first end of the steering tie rod (27) is connected to the bending drive rack (131), and the second end of the steering tie rod (27) is hinged to the jaw.

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