Electric anastomat with novel bending mechanism

Abstract

The invention discloses an electric anastomat with a novel bending mechanism. The electric anastomat comprises a cannula module and a bending mechanism, a device body module; the rotating module is arranged on the periphery of the near end of the sleeve module and comprises a rotating shell and a bending mechanism installed on the rotating shell, a steering rod is arranged between the outer sleeve and the inner sleeve, the near end of the steering rod is in transmission connection with the bending mechanism, and the far end of the steering rod is movably connected with the steering control mechanism; the bending mechanism comprises a bending driving sliding block in axial sliding fit with the outer sleeve, a bending gear connecting rod rotationally arranged on the rotating shell, a bending driving assembly driving the bending gear connecting rod to rotate and a driving sliding shaft connecting the bending driving sliding block and the bending gear connecting rod. The driving sliding shaft is driven by the bending gear connecting rod to move in the axial direction of the outer sleeve, and the near end of the steering rod is fixedly connected with the bending driving sliding block. According to the electric anastomat with the novel bending mechanism, bending operation is convenient and fast, safety and reliability are achieved, and operation safety is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to an electric stapler with a novel bending mechanism. Background Art

[0002] Electric laparoscopic cutting staplers have been widely praised in domestic and foreign markets in recent years due to their many advantages such as ease of use and good surgical treatment effects.

[0003] During clinical surgery, medical staff often need to hold a variety of instruments. Therefore, the design of the laparoscopic stapler requires a compact structure and reasonable positioning of the functional buttons to facilitate one-handed operation by the doctor.

[0004] Chinese patent CN 105816214B discloses a safety system and a stapler with the safety system. The jaw bending action of the stapler still adopts the traditional manual operation, that is, the doctor first hooks the rotating hand wheel with his fingers to pull back to release the locking effect of the internal structure of the instrument on the jaw, and then uses other objects to hold the jaw to bend the jaw, and then releases the rotating hand wheel to lock the jaw in the bent position. However, in actual clinical use, the doctor's fingers often accidentally trigger the rotating hand wheel, causing the jaw locking mechanism to be released, and the jaw of the instrument suddenly changes from a bent state to a straight state, which is inconvenient for the doctor to operate and is easy to cause harm to the patient. Summary of the invention

[0005] Based on the above problems, the purpose of the present invention is to provide an electric stapler with a novel bending mechanism, which is convenient and quick to operate, less prone to accidental touch, and improves surgical safety.

[0006] In order to overcome the deficiencies of the prior art, the technical solution provided by the present invention is:

[0007] The electric stapler with a novel bending mechanism comprises:

[0008] A sleeve module, comprising an outer sleeve, a steering sleeve hinged to the distal end of the outer sleeve, an inner sleeve inserted in the outer sleeve, a steering control mechanism arranged at the distal end of the inner sleeve and extending to the steering sleeve, a nail magazine mechanism fixedly connected to the steering control mechanism, a firing rod inserted in the inner sleeve, and a cutting knife mechanism connected to the distal end of the firing rod and extending to the steering control mechanism;

[0009] The body module comprises a bracket and a cutting drive mechanism mounted on the bracket, wherein the firing rod is drivingly connected to the cutting drive mechanism and moves along the axial direction of the inner sleeve under the drive of the cutting drive mechanism;

[0010] A rotating module is arranged at the outer periphery of the proximal end of the sleeve module, comprising a rotating shell and a bending mechanism installed on the rotating shell, a steering rod is arranged between the outer sleeve and the inner sleeve, a proximal end of the steering rod is transmission-connected with the bending mechanism and a distal end of the steering rod is movably connected with the steering control mechanism;

[0011] The bending mechanism includes a bending drive slider that is axially slidably matched with the outer sleeve, a bending gear connecting rod rotatably arranged on the rotating outer shell, a bending drive assembly that drives the bending gear connecting rod to rotate, and a driving sliding shaft connecting the bending drive slider and the bending gear connecting rod. The driving sliding shaft moves axially along the outer sleeve under the drive of the bending gear connecting rod, and the proximal end of the steering rod is fixedly connected to the bending drive slider.

[0012] In one of the embodiments, the bending drive assembly includes a bending drive motor and a bending drive gear arranged at a power output end of the bending drive motor, and the bending drive gear is meshed with the bending gear connecting rod.

[0013] In one embodiment, the bending drive assembly includes a bending drive shaft extending radially along the outer sleeve, an elastic limiter mounted on the bending drive shaft, a rotating handle fixedly connected to the bending drive shaft, and an L-shaped rack respectively meshing with the bending drive shaft and the bending gear connecting rod, and the two ends of the elastic limiter respectively abut against the rotating outer shell and the bending drive shaft.

[0014] In one of the embodiments, a lower end surface of the rotating handle is provided with a plurality of grooves arranged along the circumferential direction, and a protrusion cooperating with the plurality of grooves is provided on the rotating housing.

[0015] In one embodiment, the bending gear connecting rod is in a fan-shaped structure and a tooth portion is arranged in the arc length direction of the fan, and a waist-shaped sliding groove is arranged on the bending gear connecting rod for the driving sliding shaft to pass through;

[0016] The bending driving slider includes a slider body, a connecting portion arranged on the slider body and cooperating with the bending driving slider, and a traction portion arranged on the slider body and cooperating with the steering rod. An arc surface cooperating with the outer sleeve is formed on the slider body, and a sliding groove cooperating with the traction portion is provided on the outer wall of the outer sleeve.

[0017] In one embodiment, the steering control mechanism includes a steering fixing seat fixedly connected to the inner sleeve, a steering control seat rotatably matched with the steering fixing seat, and a cutting knife steering seat arranged on the steering control seat, the cutting knife mechanism is inserted into the cutting knife steering seat, the steering control seat is provided with a steering drive pin, and the steering rod is provided with a steering waist-shaped hole matched with the steering drive pin.

[0018] In one embodiment, the nail magazine mechanism includes a nail magazine seat fixedly connected to the steering control mechanism, a nail anvil seat hinged to the nail magazine seat, and a spring plate assembly arranged between the nail magazine seat and the nail anvil seat;

[0019] The spring sheet assembly includes a spring sheet body fixedly connected to the nail magazine seat, a first spring sheet portion abutting the nail abutment seat, and a second spring sheet portion abutting the cutting knife mechanism. When there is no suturing assembly in the nail magazine seat, the second spring sheet portion limits the movement of the cutting knife mechanism.

[0020] In one embodiment, the cutting knife mechanism includes a knife seat, a cutting knife arranged on the knife seat, a crimping portion arranged on the knife seat away from the electric kiss jaws and cooperating with the second spring sheet portion, a hanging ear arranged on the side of the knife seat, and a lifting portion arranged on the knife seat facing the electric kiss jaws, and the nail magazine seat is provided with a limit platform and a sinking groove cooperating with the hanging ear;

[0021] When there is no suturing assembly in the jaws of the electric kiss, the second spring sheet portion abuts against the crimping portion so that the ear is located in the sunken groove and abuts against the limit table, and the cutting knife mechanism cannot move. When there is a suturing assembly in the jaws of the electric kiss, the sliding block of the suturing assembly abuts against the lifting portion, and the knife seat overcomes the elastic force of the second spring sheet portion and moves upward, so that the ear is separated from the limit table, and the cutting knife assembly can move freely.

[0022] In one embodiment, the cutting drive mechanism includes a cutting motor, a gear assembly drivingly connected to the cutting motor, and a retracting assembly for disengaging the gear assembly from the cutting motor;

[0023] The gear assembly includes a pin fixed on the bracket, a double gear rotatably arranged on the pin, a plurality of planetary gears meshing with the pinion of the double gear, a planetary carrier supporting the plurality of planetary gears, and inner and outer gears meshing with the outer sides of the plurality of planetary gears. The planetary carrier is sleeved on the pin and is coaxially arranged with the double gear and the inner and outer gears. The large gear of the double gear is transmission-connected to the cutting motor, and the inner and outer gears are meshed with a rack connected to the firing rod.

[0024] In one embodiment, the retraction assembly includes a retraction square shaft sleeved on the pin shaft and fixedly connected to the planetary carrier, a retraction handle is hinged on the retraction square shaft, and a limit block assembly for limiting the rotation of the retraction handle is provided on the bracket.

[0025] In one embodiment, a movable handle assembly for closing the jaws is hingedly connected to the bracket, and a closing assembly cooperating with the movable handle assembly is provided on the outer sleeve;

[0026] The closing assembly comprises a sleeve rear seat fixed on the outer wall of the outer sleeve and a reset component arranged between the sleeve rear seat and the bracket. The sleeve rear seat is provided with a hinged portion hinged to the movable handle assembly.

[0027] In one embodiment, the movable handle assembly includes a handle portion hinged to the bracket, a closing link hinged to the handle portion on a side close to the hinge portion, and a locking portion arranged on a side of the handle portion away from the hinge portion. A locking button that cooperates with the locking portion is rotatably provided on the bracket. When the handle portion is rotated to close the electric kiss jaws, the locking portion abuts against the locking button and is locked. After the locking button is rotated, the locking portion is disengaged from the locking button, and the handle portion is reset under the action of the reset component.

[0028] Compared with the prior art, the advantages of the present invention are:

[0029] 1. Through the cooperation between the bending mechanism and the steering rod, when the bending drive assembly drives the bending drive slider to move along the axial direction of the outer sleeve, the steering rod can be driven to move along the axial direction of the outer sleeve between the outer sleeve and the inner sleeve, thereby driving the nail magazine mechanism to rotate through the steering control mechanism to realize the left and right steering of the jaws;

[0030] 2. When the bending and turning drive assembly is electrically driven, it is convenient for doctors to operate with one hand during surgery, thus improving surgical efficiency;

[0031] 3. When the turning drive assembly is manually operated, an elastic limiting component is provided between the rotating handle and the rotating drive shaft, so that the rotating handle is pressed against the rotating shell, which is not easy to be accidentally touched. Matching grooves and protrusions are provided on the rotating handle and the rotating shell, which can further avoid accidental touches. When the turning operation is performed, a click sound after the rotating handle and the rotating shell are matched will be heard, indicating the turning gear position;

[0032] 4. The spring sheet assembly arranged between the nail magazine seat and the nail anvil seat can form an electric kiss jaw between the nail magazine seat and the nail anvil seat. The spring sheet assembly can also cooperate with the cutting knife assembly. When there is no partition assembly in the electric kiss jaw, the movement of the cutting knife assembly can be restricted to play a safety role;

[0033] 5. A retraction assembly is provided on the cutting drive mechanism to facilitate separation of the gear assembly from the cutting motor. When the motor fails, the cutting knife mechanism can be reset by operating the retraction assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0035] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0036] Figure 2 This is a schematic structural diagram of a body module in Embodiment 1 of the present invention;

[0037] Figure 3 This is one of the structural schematic diagrams of the gear assembly in Example 1 of the present invention;

[0038] Figure 4 for Figure 3 AA cross-sectional diagram of ;

[0039] Figure 5 This is the second structural schematic diagram of the gear assembly in Embodiment 1 of the present invention;

[0040] Figure 6 This is a schematic diagram of the structure of the rollback component in Example 1 of the present invention;

[0041] Figure 7 This is a schematic diagram of the structure of the movable handle assembly in Example 1 of the present invention;

[0042] Figure 8 This is a schematic diagram of the structure of the rotating module in Embodiment 1 of the present invention;

[0043] Fig. 9 for Figure 8 The local enlarged view of point I in the middle;

[0044] Fig.10 for Figure 8 Schematic diagram of the middle BB section;

[0045] Fig.11 This is a schematic diagram of the structure of the bending gear connecting rod in Example 1 of the present invention;

[0046] Fig.12 Schematic diagram of the structure of the bending driving slider in Embodiment 1 of the present invention;

[0047] Fig.13 This is a schematic structural diagram of a sleeve module in Embodiment 1 of the present invention;

[0048] Fig.14 Fig.13 Schematic diagram of the middle BB section;

[0049] Fig.15This is one of the structural schematic diagrams of the steering control mechanism in Example 1 of the present invention;

[0050] Fig.16 This is a second structural schematic diagram of the steering control mechanism in Embodiment 1 of the present invention;

[0051] Fig.17 It is a schematic structural diagram of the steering rod in Example 1 of the present invention;

[0052] Fig.18 This is a schematic diagram of the structure of the steering rod and the steering drive slider in embodiment 1 of the present invention;

[0053] Fig.19 This is a schematic diagram of the structure of the steering rod and the steering control mechanism in Embodiment 1 of the present invention;

[0054] Fig. 20 It is a structural schematic diagram of the spring element assembly in Embodiment 1 of the present invention;

[0055] Fig.21 Schematic diagram of the structure of the nail magazine mechanism in Example 1 of the present invention;

[0056] Fig. 22 This is a schematic structural diagram of a nail magazine seat in Embodiment 1 of the present invention;

[0057] Fig.23 for Fig. 22 A partial enlarged view of the H in the middle;

[0058] Fig.24 Schematic diagram of the structure of the cutting knife mechanism in Example 1 of the present invention;

[0059] Fig.25 This is a schematic diagram of the cutting insurance state in Example 1 of the present invention;

[0060] Fig.26 This is a schematic diagram of the structure of the contact cutting insurance state in Embodiment 1 of the present invention;

[0061] Fig. 27 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0062] Fig.28 for Fig. 27 Schematic diagram of the middle DD section;

[0063] Fig.29 This is a schematic diagram of the structure of the rotary handle in Example 2 of the present invention;

[0064] Fig.30 for Fig.29 A partial enlarged view of the middle J;

[0065] Fig.31 It is a schematic diagram of the structure of the rotating housing in Embodiment 2 of the present invention;

[0066] Fig.32 for Fig.31 A partial enlarged view of the K in the middle;

[0067] Fig.33 Schematic diagram of the structure of the L-shaped rack in Example 2 of the present invention;

[0068] in:

[0069] 1. Body module; 11. Cutting motor; 111. Cutting drive gear; 112. Rack; 113. Gear assembly; 1131. Retracting square shaft; 1132. Planet carrier; 1133. Planetary gear; 1134. Inner and outer gears; 11341. Outer gears; 11342. Inner gears; 1135. Double gears; 11351. Large gear; 11352. Small gear; 1136. Pin; 1137. Retracting handle; 121. Locking button; 122. Movable handle assembly; 1221. Handle part; 1222. Closing connecting rod; 1223. Locking part; 13. Circuit board; 14. Bracket; 141. Limit block;

[0070] 2. Rotating module; 21. Rotating housing; 211. Driving slide groove; 212. Protruding part; 22. Bending driving motor; 221. Rotating handle; 2211. Groove; 222. Bending driving shaft; 223. Elastic limiting member; 23. Bending driving gear; 24. Bending gear connecting rod; 241. Waist-shaped slide groove; 242. Shaft hole; 25. Driving slide shaft; 26. Bending driving slider; 261. Connecting part; 262. Slider body; 263. Traction part; 27. Rotating shaft; 28. Elastic limiting member; 29. ​​L-shaped rack; 291. First meshing tooth; 292. Second meshing tooth;

[0071] 3. Sleeve module; 30. Firing rod; 31. Inner sleeve; 32. Sleeve back seat; 321. Articulated part; 33. Reset component; 341. Outer sleeve; 342. Steering sleeve; 351. Anchor seat; 352. Nail magazine seat; 3521. Limiting boss; 3522. Sinking groove; 353. Articulated shaft; 361. Steering rod; 3611. Square hole; 3612. Steering waist hole; 362. Steering Control mechanism; 3621, steering fixing seat; 36211, steering pin shaft; 3622, cutting knife steering seat; 3623, steering control seat; 36231, steering pin hole; 36232, steering drive pin; 36233, mounting hole; 37, spring sheet assembly; 371, first spring sheet; 372, second spring sheet; 38, cutting knife mechanism; 381, hanging ear; 382, ​​crimping part; 383, lifting part;

[0072] 4. Suture components. DETAILED DESCRIPTION

[0073] The above scheme is further described below in conjunction with specific examples. It should be understood that these examples are used to illustrate the present invention and are not limited to the scope of the present invention. The implementation conditions adopted in the examples can be further adjusted according to the conditions of the specific manufacturer, and the unspecified implementation conditions are usually the conditions in conventional experiments.

[0074] See also Figure 1 , which is a structural schematic diagram of Example 1 of the present invention, provides an electric stapler with a novel bending mechanism, including a body module 1, a rotation module 2 and a sleeve module 3 arranged in sequence.

[0075] like Fig.13 and Fig.14 As shown, the sleeve module 3 includes an outer sleeve 341, an inner sleeve 31 hinged at the distal end of the outer sleeve 341 to the steering sleeve 342, and inserted into the outer sleeve 341, a steering control mechanism 362 arranged at the distal end of the inner sleeve 31 and extending to the steering sleeve 342, a nail magazine mechanism fixedly connected to the steering control mechanism 362, a firing rod 30 inserted into the inner sleeve 31, and a cutting knife mechanism 38 connected to the distal end of the firing rod 30 and extending to the steering control mechanism 362. The distal end here refers to the end close to the patient during the operation, and the proximal end refers to the end away from the patient during the operation.

[0076] like Figures 8 to 10 As shown, the rotating module 2 is arranged on the outer periphery of the proximal end of the sleeve module 3, including a rotating shell 21 and a bending mechanism installed on the rotating shell 21, and a steering rod 361 is provided between the outer sleeve 341 and the inner sleeve 31. The proximal end of the steering rod 361 is transmission-connected to the bending mechanism and the distal end is movably connected to the steering control mechanism 362. The rotating shell 21 can be configured as a left rotating shell and a right rotating shell connected to each other.

[0077] The bending mechanism includes a bending drive slider 26 that is axially slidably matched with the outer sleeve 341, a bending gear connecting rod 24 that is rotatably arranged on the rotating outer shell 21, a bending drive assembly that drives the bending gear connecting rod 24 to rotate, and a driving slide shaft 25 connecting the bending drive slider 26 and the bending gear connecting rod 24. The driving slide shaft 25 moves axially along the outer sleeve 341 under the drive of the bending gear connecting rod 24. The proximal end of the steering rod 361 is fixedly connected to the bending drive slider 26. The bending drive assembly drives the bending gear connecting rod 24 to rotate, so as to drive the bending drive slider 26 to move axially along the outer sleeve 341, thereby driving the steering rod 361 to move axially along the outer sleeve 341, and then the steering rod 361 drives the steering control mechanism 362 to complete the steering.

[0078] like Fig.11As shown, the bending gear connecting rod 24 is fan-shaped and has teeth arranged in the arc length direction of the fan. A waist-shaped slide groove 241 is arranged on the bending gear connecting rod 24 for the driving slide shaft 25 to pass through. When the bending gear connecting rod 24 rotates, the driving slide shaft 25 can move in the waist-shaped slide groove 241 to achieve axial movement along the outer sleeve 341. The bending gear connecting rod 24 is rotatably arranged on the rotating shaft 27 on the rotating housing 21. Accordingly, the bending gear connecting rod 24 is provided with an axial hole 242 for the rotating shaft 27 to pass through.

[0079] In order to improve the stability of the structure, a driving groove 211 that cooperates with the first end of the driving slide shaft 25 is provided on the rotating shell 21, and a limiting boss is provided in the middle of the driving slide shaft 25. An elastic limiting component 28 is sleeved on the driving slide shaft 25, and the elastic limiting component 28 abuts between the limiting boss and the driving groove 211. Preferably, the elastic limiting component 28 is a spring, and the second end of the driving slide shaft 25 is inserted into the bending driving slider 26 and the bending gear connecting rod 24. Through the action of the elastic limiting component 28, the driving slide shaft 25 can always be kept on the bending driving slider 26 and the bending gear connecting rod 24, thereby improving the stability of the structure.

[0080] like Fig.12 As shown, the bending drive slider 26 includes a slider body 262, a connecting portion 261 arranged on the slider body 262 and cooperating with the bending gear connecting rod 24, and a traction portion 263 arranged on the slider body 262 and cooperating with the steering rod 361. An arc surface cooperating with the outer sleeve 341 is formed on the slider body 262, and a sliding groove cooperating with the traction portion 263 is provided on the outer wall of the outer sleeve 341. The lower end of the traction portion 263 is a square structure. In order to cooperate with the traction portion 263, a square hole 3611 is provided on the steering rod 361 to achieve fixed cooperation with the traction portion 263.

[0081] In this example, the bending drive assembly includes a bending drive motor 22 and a bending drive gear 23 arranged at the power output end of the bending drive motor 22 , and the bending drive gear 23 is meshed with a bending gear connecting rod 24 .

[0082] When the bending motor 22 fails and cannot rotate, in order to facilitate the resetting of the jaws after bending, an operating window hole connected to the driving slide shaft 25 is provided on the rotating shell 21. The driving slide shaft 25 is manually pulled to overcome the limiting effect of the elastic limiting component 28 and move into the driving slide groove 211 until the connection between the bending gear connecting rod 24 and the bending driving slider 26 is cut off. At this time, since the bending motor 22 is not locked, the electric kiss jaws are in an active state, and the coaxiality of the electric kiss jaws and the outer sleeve 341 can be adjusted to achieve the resetting of the electric kiss jaws.

[0083] like Fig.15 and Fig.16As shown, the steering control mechanism 362 includes a steering fixed seat 3621 fixedly connected to the inner sleeve 31, a steering control seat 3623 rotatably matched with the steering fixed seat 3621, and a cutting knife steering seat 3622 arranged on the steering control seat 3623, the cutting knife mechanism 38 is inserted into the cutting knife steering seat 3622, a steering pin shaft 36211 is provided on the steering fixed seat 3621, and a steering pin hole 36231 matched with the steering pin shaft 36211 is provided on the steering control seat 3623, and the steering control seat 3623 is realized through the cooperation of the steering pin shaft 36211 and the steering pin hole 36231, and the rotational cooperation between the steering control seat 3623 and the steering fixed seat 3621 is realized.

[0084] A steering drive pin 36232 is provided on the rotation control seat 3623, and a steering waist-shaped hole 3612 is provided on the steering rod 361 to match the steering drive pin 36232. When the turning mechanism drives the steering rod 361 to move axially along the outer sleeve 341, the steering drive pin 36232 can move in the steering waist-shaped hole 3612, and the steering control seat 3623 is rotated around the steering fixed seat 3621 through the action of the steering rod 361 to achieve left and right steering.

[0085] like Fig.21 As shown, the nail magazine mechanism includes a nail magazine seat 352 fixedly connected to the steering control seat 3623, a nail support seat 351 hinged to the nail magazine seat 352, and a spring assembly 37 arranged between the nail magazine seat 352 and the nail support seat 351, wherein the nail magazine seat 352 is fixed to the mounting hole 36233 on the steering control seat 3623 via fasteners.

[0086] like Fig. 20 As shown, the spring sheet assembly 37 includes a spring sheet body fixedly connected to the staple cartridge seat, a first spring sheet portion abutting against the staple cartridge seat 351, and a second spring sheet portion abutting against the cutting knife mechanism 38. When there is no suturing assembly 4 in the staple cartridge seat 351, the second spring sheet portion limits the movement of the cutting knife mechanism 38. Specifically, the first spring sheet portion includes two first spring sheets 371 arranged in parallel, the second spring sheet portion includes a second spring sheet 372 arranged between the two first spring sheets 371, and the angle between the first spring sheet 371 and the spring sheet body is greater than the angle between the second spring sheet 372 and the spring sheet body.

[0087] like Fig.24 As shown, the cutting knife mechanism 38 includes a knife seat, a cutting knife arranged on the knife seat, a crimping portion 382 arranged on the knife seat away from the electric kiss jaws and cooperating with the second elastic sheet portion, a hanging ear 381 arranged on the side of the knife seat, and a lifting portion 383 arranged on the knife seat facing the electric kiss jaws, as shown in FIG. Fig. 22 and Fig.23 As shown, the nail magazine seat 352 is provided with a limit platform 3521 and a sinking groove 3522 that cooperate with the hanging ear 381. Fig.25As shown, when there is no suture assembly 4 in the electric kiss jaws, the second spring portion abuts against the crimping portion 382 so that the hook 381 is located in the sunken groove 3522 on the nail magazine seat 352 and abuts against the limit platform 3521, and the cutting knife mechanism 38 cannot move. Fig.26 As shown, when there is a suture assembly 4 in the electric kiss jaws, the slider of the suture assembly 4 abuts against the lifting part 383, and the knife seat overcomes the elastic force of the second spring piece part and moves upward, so that the hanging ear 381 is separated from the limit platform 3521, and the cutting knife mechanism 38 can move freely. Therefore, the spring piece assembly 37 can form an electric kiss jaw between the nail magazine seat 352 and the nail support seat 351, and can also play a role of cutting insurance. Only when the suture assembly is installed, the cutting knife assembly can work.

[0088] like Figure 2 As shown, the body module 1 includes a bracket 14, a cutting drive mechanism installed on the bracket 14 and a circuit board 13 connected to the cutting drive mechanism. The firing rod 30 is transmission-connected to the cutting drive mechanism and moves axially along the inner sleeve 31 under the drive of the cutting drive mechanism, thereby completing tissue cutting.

[0089] Specifically, the cutting drive mechanism includes a cutting motor 11, a gear assembly drivingly connected to the cutting motor 11, and a retracting assembly that enables the gear assembly to be disengaged from the cutting motor 11. Figures 3 to 5 As shown, the gear assembly includes a pin shaft 1136 fixed to the bracket 14, a double gear 1135 rotatably arranged on the pin shaft 1136, a plurality of planetary gears 1133 meshing with a pinion 11352 of the double gear 1135, a planet carrier 1132 supporting the plurality of planetary gears 1133, and an inner and outer gear 1134 meshing with the outer surface of the plurality of planetary gears 1133, the inner teeth 11341 of the inner and outer gear 1134 meshing with the plurality of planetary gears 1133, the planet carrier 1132 is sleeved on the pin shaft 1136 and meshed with the double gear 11352. 135. The inner and outer gears 1134 are coaxially arranged, the large gear 11351 of the double gear 1135 is transmission-connected to the cutting drive gear 111 at the power output end of the cutting motor 11, the outer teeth 11341 of the inner and outer gear 1134 are meshed with the rack 112 connected to the firing rod 30, the cutting motor 11 drives the large gear 11351 of the double gear 1135 to rotate, the small gear 11352 of the double gear 1135 drives the multiple planetary gears 1133 to rotate, and the multiple planetary gears 1133 further drive the inner and outer gears 1134 to rotate, so as to drive the rack 112 to move, thereby driving the cutting knife mechanism 38 to move.

[0090] like Figure 6As shown, the retraction assembly includes a retraction square shaft 1131 which is sleeved on the pin shaft 1136 and fixedly connected to the planetary frame 1132, and a retraction handle 1137 is hinged on the retraction square shaft 1131. A limit block assembly for limiting the rotation of the retraction handle 1137 is provided on the bracket 14. The retraction handle 1137 is T-shaped, and the limit block assembly includes two limit blocks 141 arranged on both sides of the retraction handle 1137. Placing the retraction handle 1137 between the two limit blocks 141 can limit the rotation of the retraction handle 1137, so that the cutting drive mechanism 38 maintains a stable working state.

[0091] In order to facilitate the opening and closing of the electric kiss jaws, a movable handle assembly 122 is hinged on the bracket 14, and a closing assembly that cooperates with the movable handle assembly 122 is provided on the outer sleeve 341. Fig.13 As shown, the closing assembly includes a sleeve rear seat 32 fixed on the outer sleeve 341 and a reset component 33 arranged between the sleeve rear seat 32 and the bracket 14. The sleeve rear seat 32 is provided with a hinged portion 321 hinged to the movable handle assembly 122. Preferably, the reset component 33 can be a spring. The movable handle assembly 122 pushes the sleeve rear seat 321 to move the outer sleeve 341 toward the distal end, and the outer sleeve 341 further pushes the steering sleeve 342 to move toward the distal end. Since the nail magazine mechanism is connected to the inner sleeve 31, and the inner sleeve 31 remains stationary, the steering sleeve 342 drives the nail support seat 351 to overcome the elastic force of the shrapnel assembly 37 and then closes to achieve the closure of the jaws. When the movable handle assembly 122 is reset, the electric kiss jaws can be opened.

[0092] like Figure 7 As shown, the movable handle assembly 122 includes a handle portion 1221 hinged to the bracket 14, a closing link 1222 hinged to the side of the handle portion 1221 close to the hinge portion 321, and a locking portion 1223 arranged on the side of the handle portion 1221 away from the hinge portion 321. A locking button 121 that cooperates with the locking portion 1223 is rotatably provided on the bracket 14. When the handle portion 1221 is rotated, the closing link 1222 can pull the sleeve rear seat 32 to close the electric kiss jaws. At this time, the locking portion 1223 is abutted and locked with the locking button 121. After the locking button 121 is rotated, the locking portion 1223 is disengaged from the locking button 121, and the handle portion 1221 is reset under the drive of the reset component 33.

[0093] like Fig. 27 and Fig.28As shown, it is a schematic diagram of the structure of the embodiment 2 of the present invention, and the rest is the same as the embodiment 1, except that: the bending is manually operated, specifically, the bending drive assembly includes a bending drive shaft 222 extending radially along the outer sleeve 341, an elastic stopper 223 sleeved on the bending drive shaft 222, a rotating handle 221 fixedly connected to the bending drive shaft 222, and an L-shaped rack 29 respectively meshed with the bending drive shaft 222 and the bending gear connecting rod 24, the elastic stopper 223 can be a spring and its two ends are respectively abutted on the rotating shell 21 and the bending drive shaft 222 to limit the bending handle 221 on the rotating shell 21. By rotating the rotating handle 221, the bending drive shaft 222 is driven to rotate, so as to drive the L-shaped rack 29 to move axially along the outer sleeve 341, and the bending gear connecting rod 24 is driven to rotate calmly, and then the bending drive slider 26 is driven to move to drive the steering rod 361 to move, and then the bending of the jaws is completed.

[0094] like Fig.33 As shown, the upper end surface of the L-shaped rack 29 is provided with a first meshing tooth 291 meshing with the bending drive shaft 222, and the side end surface is provided with a second meshing tooth 292 meshing with the bending gear connecting rod 24.

[0095] In order to further optimize the implementation effect of the present invention, Fig.29 and Fig.30 As shown, a plurality of grooves 2211 are arranged along the circumferential direction on the lower end surface of the rotating handle 221. Fig.31 and Fig.32 As shown, a protrusion 212 matching with a plurality of grooves 2211 is provided on the rotating shell 21. When the rotating handle 221 is rotated, a clicking sound is produced after the rotating handle 221 and the rotating shell 21 rotate and cooperate, forming a gear sense and avoiding accidental touch.

[0096] The working principle of the present invention is:

[0097] The jaw closing process: the movable handle assembly 122 is rotated, and the closing link 1222 drives the outer sleeve 341 and the steering sleeve 342 to move to the distal end through the sleeve rear seat 32. Since the stapler mechanism is connected to the inner sleeve 31 and remains stationary, the steering sleeve 342 drives the stapler seat 351 to overcome the elastic force of the spring assembly 37 and close. At this time, the stapler is extended to the tissue position that needs to be cut or the suturing is completed. The locking button 121 is rotated, and the locking part 1223 is disengaged from the locking button 121. The movable handle assembly 122 is reset under the action of the reset component 33, and the jaws are opened.

[0098] Cutting process: the cutting motor 11 drives the large gear 11351 of the double gear 1135 to rotate, the small gear 11352 of the double gear 1135 drives the multiple planetary gears 1133 to rotate, the multiple planetary gears 1133 drive the inner and outer gears 1134 to rotate, and the inner and outer gears 1134 drive the rack 112 connected to the firing rod 30 to move, thereby driving the cutting knife mechanism 38 to move via the firing rod 30 to complete the cutting process. During the cutting process, the cutting knife mechanism 38 will only move when the suture assembly 4 is loaded into the jaws and the slider of the suture assembly 4 lifts the knife seat to make the ear 381 disengage from the limiting boss 3522 on the nail magazine seat 352, thereby achieving the effect of cutting insurance.

[0099] The jaw bending process: the bending gear connecting rod 24 is driven to rotate through the bending drive motor 22 or the rotating handle 221 to drive the bending drive slider 26 to move, thereby driving the steering rod 361 to move, and then driving the steering control seat 3623 to rotate, and finally realizing the rotation of the nail magazine mechanism on the steering control seat 3623 to realize the bending operation of the jaws.

[0100] In summary, the electric stapler has a new bending mechanism, which is easy to operate, can avoid accidental touch, and improve the safety performance of the operation.

[0101] The above examples are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent transformation or modification made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. An electric stapler with a novel bending mechanism, characterized in that: include: A sleeve module, comprising an outer sleeve, a steering sleeve hinged to the distal end of the outer sleeve, an inner sleeve inserted in the outer sleeve, a steering control mechanism arranged at the distal end of the inner sleeve and extending to the steering sleeve, a nail magazine mechanism fixedly connected to the steering control mechanism, a firing rod inserted in the inner sleeve, and a cutting knife mechanism connected to the distal end of the firing rod and extending to the steering control mechanism; The body module comprises a bracket and a cutting drive mechanism mounted on the bracket, wherein the firing rod is drivingly connected to the cutting drive mechanism and moves along the axial direction of the inner sleeve under the drive of the cutting drive mechanism; A rotating module is arranged at the outer periphery of the proximal end of the sleeve module, comprising a rotating shell and a bending mechanism installed on the rotating shell, a steering rod is arranged between the outer sleeve and the inner sleeve, a proximal end of the steering rod is transmission-connected with the bending mechanism and a distal end of the steering rod is movably connected with the steering control mechanism; The bending mechanism includes a bending drive slider that is axially slidably matched with the outer sleeve, a bending gear connecting rod rotatably arranged on the rotating outer shell, a bending drive assembly that drives the bending gear connecting rod to rotate, and a driving sliding shaft connecting the bending drive slider and the bending gear connecting rod. The driving sliding shaft moves axially along the outer sleeve under the drive of the bending gear connecting rod, and the proximal end of the steering rod is fixedly connected to the bending drive slider.

2. The electric stapler with a novel bending mechanism according to claim 1 is characterized in that: The bending drive assembly includes a bending drive motor and a bending drive gear arranged at the power output end of the bending drive motor, and the bending drive gear is meshed with the bending gear connecting rod.

3. The electric stapler with a novel bending mechanism according to claim 1 is characterized in that: The bending drive assembly includes a bending drive shaft extending radially along the outer sleeve, an elastic limiter sleeved on the bending drive shaft, a rotating handle fixedly connected to the bending drive shaft, and an L-shaped rack respectively meshing with the bending drive shaft and the bending gear connecting rod, and two ends of the elastic limiter respectively abut against the rotating outer shell and the bending drive shaft.

4. The electric stapler with a novel bending mechanism according to claim 3 is characterized in that: The lower end surface of the rotating handle is provided with a plurality of grooves arranged along the circumferential direction, and the rotating shell is provided with protrusions matched with the plurality of grooves.

5. The electric stapler with a novel bending mechanism according to claim 2 or 3, characterized in that: The bending gear connecting rod is in a fan-shaped structure and a tooth portion is arranged in the arc length direction of the fan-shaped structure. The bending gear connecting rod is provided with a waist-shaped sliding groove for the driving sliding shaft to pass through. The bending driving slider includes a slider body, a connecting portion arranged on the slider body and cooperating with the bending driving slider, and a traction portion arranged on the slider body and cooperating with the steering rod. An arc surface cooperating with the outer sleeve is formed on the slider body, and a sliding groove cooperating with the traction portion is provided on the outer wall of the outer sleeve.

6. The electric stapler with a novel bending mechanism according to claim 1, characterized in that: The steering control mechanism includes a steering fixing seat fixedly connected to the inner sleeve, a steering control seat rotatably matched with the steering fixing seat, and a cutting knife steering seat arranged on the steering control seat, the cutting knife mechanism is inserted into the cutting knife steering seat, the steering control seat is provided with a steering drive pin, and the steering rod is provided with a steering waist-shaped hole matched with the steering drive pin.

7. The electric stapler with a novel bending mechanism according to claim 1, characterized in that: The nail magazine mechanism includes a nail magazine seat fixedly connected to the steering control mechanism, a nail anvil seat hinged to the nail magazine seat, and a spring sheet assembly arranged between the nail magazine seat and the nail anvil seat; The spring sheet assembly includes a spring sheet body fixedly connected to the nail magazine seat, a first spring sheet portion abutting the nail abutment seat, and a second spring sheet portion abutting the cutting knife mechanism. When there is no suturing assembly in the nail magazine seat, the second spring sheet portion limits the movement of the cutting knife mechanism.

8. The electric stapler with a novel bending mechanism according to claim 7 is characterized in that: The cutting knife mechanism includes a knife seat, a cutting knife arranged on the knife seat, a crimping portion arranged on the knife seat away from the electric kiss jaws and cooperating with the second elastic sheet portion, a hanging ear arranged on the side of the knife seat, and a lifting portion arranged on the knife seat facing the electric kiss jaws, and the nail magazine seat is provided with a limit platform and a sinking groove cooperating with the hanging ear; When there is no suturing assembly in the jaws of the electric kiss, the second spring sheet portion abuts against the crimping portion so that the ear is located in the sunken groove and abuts against the limit table, and the cutting knife mechanism cannot move. When there is a suturing assembly in the jaws of the electric kiss, the sliding block of the suturing assembly abuts against the lifting portion, and the knife seat overcomes the elastic force of the second spring sheet portion and moves upward, so that the ear is separated from the limit table, and the cutting knife assembly can move freely.

9. The electric stapler with a novel bending mechanism according to claim 1, characterized in that: The cutting drive mechanism comprises a cutting motor, a gear assembly drivingly connected to the cutting motor, and a retracting assembly for disengaging the gear assembly from the cutting motor; The gear assembly includes a pin fixed on the bracket, a double gear rotatably arranged on the pin, a plurality of planetary gears meshing with the pinion of the double gear, a planetary carrier supporting the plurality of planetary gears, and inner and outer gears meshing with the outer sides of the plurality of planetary gears. The planetary carrier is sleeved on the pin and is coaxially arranged with the double gear and the inner and outer gears. The large gear of the double gear is transmission-connected to the cutting motor, and the inner and outer gears are meshed with a rack connected to the firing rod.

10. The electric stapler with a novel bending mechanism according to claim 9, characterized in that: The retraction assembly comprises a retraction square shaft sleeved on the pin shaft and fixedly connected to the planetary frame, a retraction handle is hinged on the retraction square shaft, and a limit block assembly for limiting the rotation of the retraction handle is provided on the bracket.

11. The electric stapler with a novel bending mechanism according to claim 1, characterized in that: A movable handle assembly for closing the jaws is hingedly connected to the bracket, and a closing assembly cooperating with the movable handle assembly is provided on the outer sleeve; The closing assembly comprises a sleeve rear seat fixed on the outer wall of the outer sleeve and a reset component arranged between the sleeve rear seat and the bracket. The sleeve rear seat is provided with a hinged portion hinged to the movable handle assembly.

12. The electric stapler with a novel bending mechanism according to claim 11, characterized in that: The movable handle assembly includes a handle portion hinged to the bracket, a closing link hinged to the handle portion on a side close to the hinge portion, and a locking portion arranged on the handle portion on a side away from the hinge portion. A locking button that cooperates with the locking portion is rotatably provided on the bracket. When the handle portion is rotated to close the electric kiss jaws, the locking portion abuts against the locking button and is locked. After the locking button is rotated, the locking portion is disengaged from the locking button, and the handle portion is reset under the action of the reset component.

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