Manual reset structure for electric endoscope anastomat bending mechanism

Abstract

The utility model relates to a manual reset structure for a bending mechanism of an electric endoscope anastomat, which comprises a swinging head bolt, a swinging head nut and an inner gear ring which are rotatably arranged in a rotating handle, and the swinging head bolt is in threaded connection with the swinging head nut; the swing head nut comprises an internal thread section connected with the swing head and an internal smooth section connected with the inner gear ring, the internal smooth section is provided with a containing ring groove for the inner gear ring to be embedded, an inserting block is arranged on the face, close to the swing head bolt, of the inner gear ring, and an inserting groove for the inserting block to be clamped is formed in the containing ring groove; the inner gear ring is slidably connected with the swing nut through a manual reset piece, the manual reset piece penetrates into the insertion groove and abuts against the insertion block, the manual reset piece pushes the inner gear ring in the direction away from the swing bolt till the insertion block is disengaged from the insertion groove, and an operation opening allowing the manual reset piece to be inserted into the insertion groove is formed in the outer wall of the rotating handle. The electric endoscope anastomat has the advantages that the use safety of the electric endoscope anastomat is improved, the operation risk is reduced, and medical accidents are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of the bending mechanism of an electric laparoscopic stapler, in particular to a manual reset structure for the bending mechanism of an electric laparoscopic stapler. Background Art

[0002] The electric laparoscopic stapler is one of the important instruments for laparoscopic surgery. When the execution end of the electric laparoscopic stapler fires the staples, it cuts the tissue between two staples and drives the staples on both sides into the tissue to suture the wound. By converting electrical energy into stable mechanical energy, the electric laparoscopic stapler can reduce the jitter of the jaws, bringing a more stable cutting and stapling effect, greatly improving the safety and efficiency of the operation, and has been widely recognized clinically.

[0003] The existing electric laparoscopic stapler drives the actuator to bend to different angles through a bending mechanism. The bending mechanism mainly includes a swing head connecting block 21, a transmission connecting rod 22, a swing head bolt 2, a swing head nut 3, and a bending motor 5. The swing head connecting block 21 is connected to the actuator and drives the actuator to bend and swing synchronously. One end of the transmission connecting rod 22 is fixedly connected to the swing head bolt 2, and the other end of the transmission connecting rod 22 is hinged to the swing head connecting block 21. The swing head bolt 2 and the swing head nut 3 are rotatably arranged in the rotary handle 1 of the stapler. A fixed frame 12 is arranged in the rotary handle 1. The swing head bolt 2 and the swing head nut 3 are both sleeved on the fixed frame 12 and rotate. The swing head bolt 2 and the swing head nut 3 are threadedly connected. The swing head nut 3 is axially fixed by the limiting protrusion on the inner wall of the housing of the rotary handle 1. When the swing head nut 3 rotates, it drives the swing head bolt 2 to rotate and the swing head bolt 2 and the swing head nut 3 move axially, and drives the transmission connecting rod 22 to move linearly back and forth.

[0004] An internal gear ring 4 is fixed to the inner side of the swing head nut 3. The bending motor 5 is arranged on the fixed frame 12. A transmission gear 51 is connected to the output shaft of the bending motor 5. The transmission gear 51 meshes with the internal gear ring 4. The bending motor 5 drives the transmission gear 51 to rotate, drives the internal gear ring 4 to rotate, and drives the swing head nut 3 to rotate.

[0005] Swing shafts 211 for restricting the swinging position of the swing head connecting block 21 are coaxially arranged on both sides in the thickness direction of the swing head connecting block 21. The swing shafts 211 are arranged in the middle of both sides in the thickness direction of the swing head connecting block 21. The swing shafts 211 are rotatably connected to the inner wall of the rotary handle 1 of the stapler and the swing shafts 211 rotate. The hinge point of the transmission connecting rod 22 and the swing head connecting block 21 is located at a position close to the side of the swing head connecting block 21. When the transmission connecting rod 22 moves linearly back and forth, it drives the swing head connecting block 21 to swing, thereby driving the actuator to swing and bend.

[0006] In view of the above related technologies, the actuator can only be driven by a bending motor to swing and bend. During the use of an electric laparoscopic stapler, there is a situation where the bending motor suddenly fails and cannot work properly. In this case, the actuator cannot bend. If the operation is in progress and the actuator has entered the human body through the trocar and is in a bent state, at this time, the actuator cannot be reset to the original straight state, and it is difficult to remove the actuator from the trocar and the human body, which may cause medical accidents. In order to improve the safety of using an electric laparoscopic stapler, reduce the surgical risk, and reduce the occurrence of medical accidents, a manual reset structure for the bending mechanism of an electric laparoscopic stapler is urgently needed. Summary of the Utility Model

[0007] In order to solve the above technical problems, the present application provides a manual reset structure for the bending mechanism of an electric laparoscopic stapler.

[0008] The manual reset structure for the bending mechanism of an electric laparoscopic stapler provided by the present application adopts the following technical solutions:

[0009] A manual reset structure for the bending mechanism of an electric laparoscopic stapler includes a swing head bolt, a swing head nut, and an internal gear ring that are rotatably arranged in a rotary handle. One end of the swing head bolt is rotatably connected to a swing head connecting block, and the other end of the swing head bolt is threadedly connected to the swing head nut;

[0010] The swing head nut includes an internal thread section connected to the swing head bolt and an internal smooth section connected to the internal gear ring. A receiving ring groove for embedding the internal gear ring is provided on the surface of the internal smooth section away from the swing head bolt. A plugging block is provided on the surface of the internal gear ring close to the swing head bolt, and a plugging groove for the plugging block to be inserted is provided on the inner bottom wall of the receiving ring groove;

[0011] The internal gear ring is slidably connected to the swing head nut through a manual reset member, and the sliding direction of the internal gear ring is the axial direction of the swing head nut. The manual reset member is located on the side of the plugging block close to the swing head bolt. The manual reset member penetrates into the plugging groove and abuts against the plugging block. The manual reset member pushes the internal gear ring away from the swing head bolt until the plugging block disengages from the plugging groove. An operation port for the manual reset member to be inserted into the plugging groove is provided on the outer wall of the rotary handle, and the operation port communicates with the plugging groove.

[0012] By adopting the above technical solution, when the bending motor of the electric endoscopic stapler fails, the inner gear ring is pushed away from the swing head bolt by the manual resetting member until the insertion block disengages from the insertion slot, so as to prevent the inner gear ring from being connected to the swing head nut and affecting the resetting of the swing head nut. Then, the swing head nut is manually rotated to tighten or loosen the swing head bolt and the swing head nut. When the swing head bolt and the swing head nut are tightened, the swing head bolt moves away from the swing head connecting block. When the swing head bolt and the swing head nut are loosened, the swing head bolt moves closer to the swing head connecting block. Thus, the swing of the swing head connecting block is manually controlled until the actuator is reset to the original ratio state, so that the actuator can be smoothly removed from the human body, improving the use safety of the electric endoscopic stapler, reducing the surgical risk, and reducing the occurrence of medical accidents.

[0013] Preferably, the manual resetting member includes an operating rod and a pushing block connected to each other. The insertion slot penetrates through both sides in the thickness direction of the swing head nut. The pushing block penetrates into the insertion slot along the radial direction of the swing head nut and abuts against the insertion block.

[0014] A first inclined surface is arranged on one side of the insertion block close to the swing head bolt. The side of the first inclined surface away from the swing head bolt is also away from the center of the circle of the inner gear ring. A second inclined surface is arranged on one side of the pushing block close to the insertion block. The second inclined surface is matched with the first inclined surface.

[0015] When the pushing block slides towards the center of the swing head nut, the second inclined surface abuts against the first inclined surface and makes the inner gear ring slide away from the swing head bolt until the insertion block disengages from the insertion slot.

[0016] By adopting the above technical solution, when the pushing block slides towards the center of the swing head nut, one end of the pushing block of the manual resetting member is inserted into the insertion slot. The second inclined surface of the pushing block abuts against the first inclined surface of the insertion block and makes the inner gear ring slide away from the swing head bolt, realizing the disengagement of the insertion block from the insertion slot. The manual resetting member inserted into the insertion slot also facilitates the operator to rotate the swing head nut.

[0017] Preferably, a plurality of the insertion blocks are arranged at equal intervals along the circumferential direction of the inner gear ring, and a plurality of the insertion slots are arranged at equal intervals along the circumferential direction of the swing head nut. The insertion slots correspond to the insertion blocks one by one.

[0018] By adopting the above technical solution, since there are a plurality of insertion slots, it is convenient for the operator to find the insertion slots.

[0019] Preferably, a round hole is arranged at each end of the length direction of each insertion slot at intervals. The round hole penetrates through both sides in the thickness direction of the swing head nut. The diameter of the orifice of the round hole is smaller than the width of the notch of the insertion slot. The end face diameter of the operating rod is consistent with the diameter of the orifice of the round hole.

[0020] Preferably, the operation port covers one insertion slot and two adjacent round holes along the length direction.

[0021] By adopting the above technical solution, the size of the round hole is smaller than that of the insertion slot, so that more round holes for the operating rod to insert can be arranged in the circumferential direction of the swing head nut. When the swing head nut rotates to any position, the manual resetting member has a hole for insertion, which further facilitates the operator to rotate the swing head nut.

[0022] Preferably, each side edge of the push block is provided with a rounded corner, and the circumferential side edge of the end of the operating rod away from the push block is provided with a rounded corner.

[0023] By adopting the above technical solution, it is convenient for the push block to penetrate into the insertion slot and for the operating rod to penetrate into the round hole.

[0024] Preferably, a support roller is connected to one end of the fixed frame close to the gear ring. The support roller is coaxially arranged with the internal gear ring, and the internal tooth surface of the internal gear ring contacts the outer peripheral wall of the support roller.

[0025] By adopting the above technical solution, support and guidance are provided for the rotation and sliding of the internal gear ring, and the stability of the rotation and sliding of the internal gear ring is improved.

[0026] Preferably, a cover plate is clamped at the operation port.

[0027] By adopting the above technical solution, the arrangement of the cover plate reduces the possibility of dust entering the inside of the rotary handle.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] 1. When the bending motor of the electric laparoscopic stapler fails, the internal gear ring is pushed away from the swing head bolt by the manual resetting member until the insertion block disengages from the insertion slot, avoiding the connection between the internal gear ring and the swing head nut from affecting the reset of the swing head nut. Then, the swing head nut is manually rotated to tighten or loosen the swing head bolt and the swing head nut. When the swing head bolt and the swing head nut are tightened, the swing head bolt moves away from the swing head connection block. When the swing head bolt and the swing head nut are loosened, the swing head bolt moves towards the swing head connection block, thereby manually controlling the swing of the swing head connection block until the actuator is reset to the original ratio state, enabling the actuator to be smoothly removed from the human body, improving the use safety of the electric laparoscopic stapler, reducing the surgical risk, and reducing the occurrence of medical accidents;

[0030] 2. When the swing head nut rotates to any position, the manual resetting member has a hole for insertion, which further facilitates the operator to rotate the swing head nut. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of a manual reset structure for a bending mechanism of an electric laparoscopic stapler in an embodiment of the present application.

[0032] Figure 2 It is an exploded structural schematic diagram for showing the first inclined surface in the embodiment of the present application.

[0033] Figure 3 It is a structural schematic diagram for showing the cooperation relationship between the limit retaining ring and the swing head nut in the embodiment of the present application.

[0034] Figure 4 It is an exploded structural schematic diagram for showing the positional relationship between the internal gear ring and the support roller in the embodiment of the present application.

[0035] Figure 5 It is a structural schematic diagram for showing the operation port and the cover plate in the embodiment of the present application.

[0036] Explanation of reference numerals: 1, rotating handle; 11, limit retaining ring; 12, fixing frame; 121, support roller; 13, operation port; 14, cover plate; 2, swing head bolt; 21, swing head connecting block; 211, swing shaft; 22, transmission connecting rod; 3, swing head nut; 31, internal thread section; 32, internal smooth section; 33, accommodation ring groove; 34, insertion slot; 35, round hole; 4, internal gear ring; 41, insertion block; 411, first inclined surface; 5, bending motor; 51, transmission gear; 6, manual reset member; 61, operating rod; 62, pushing block; 621, second inclined surface. Detailed implementation manners

[0037] The following Figures 1-5 further describes the present application in detail.

[0038] The embodiment of the present application discloses a manual reset structure for the bending mechanism of an electric laparoscopic stapler.

[0039] Referring to Figures 1-5 , the manual reset structure for the bending mechanism of the electric laparoscopic stapler includes a swing head bolt 2, a swing head nut 3 and an internal gear ring 4 rotatably arranged in a rotating handle 1. One end of the swing head bolt 2 is rotatably connected to a swing head connecting block 21, and the other end of the swing head bolt 2 is threadedly connected to the swing head nut 3. A transmission gear 51 is connected to the output shaft of a bending motor 5, the transmission gear 51 meshes with the internal gear ring 4, the bending motor 5 drives the transmission gear 51 to rotate, drives the internal gear ring 4 to rotate, drives the swing head nut 3 to rotate, and when the swing head nut 3 rotates, it drives the swing head bolt 2 to rotate and the swing head bolt 2 and the swing head nut 3 move axially.

[0040] A limit retaining ring 11 is arranged on the inner peripheral wall of the rotating handle 1, the limit retaining ring 11 is arranged at both axial ends of the swing head nut 3, the limit retaining ring 11 is used to limit the axial movement of the swing head nut 3, and there is a gap between the mutually approaching surfaces of the limit retaining rings 11 and the two axial surfaces of the swing head nut 3 to prevent the swing head nut 3 from being stuck when rotating.

[0041] The swing nut 3 includes an internal thread section 31 connected to the swing bolt 2 and an internal smooth section 32 connected to the internal gear ring 4. A receiving ring groove 33 for embedding the internal gear ring 4 is formed on one side of the internal smooth section 32 away from the swing bolt 2. A plug-in block 41 is fixedly connected to one side of the internal gear ring 4 close to the swing bolt 2. A plug-in slot 34 for the plug-in block 41 to be inserted is formed on the inner bottom wall of the receiving ring groove 33.

[0042] One end of the fixing frame 12 close to the gear ring is connected with a support roller 121. The support roller 121 is coaxially arranged with the internal gear ring 4. The internal tooth surface of the internal gear ring 4 contacts the outer peripheral wall of the support roller 121, providing support and guidance for the rotation and sliding of the internal gear ring 4, and improving the stability of the rotation and sliding of the internal gear ring 4.

[0043] The internal gear ring 4 is slidably connected to the swing nut 3 through a manual reset member 6, and the sliding direction of the internal gear ring 4 is the axial direction of the swing nut 3. The manual reset member 6 is located on the side of the plug-in block 41 close to the swing bolt 2. The manual reset member 6 penetrates into the plug-in slot 34 and abuts against the plug-in block 41. The manual reset member 6 pushes the internal gear ring 4 in the direction away from the swing bolt 2 until the plug-in block 41 disengages from the plug-in slot 34.

[0044] The manual reset member 6 includes an operating rod 61 and a pushing block 62 integrally formed. The plug-in slot 34 penetrates through both sides of the swing nut 3 in the thickness direction. The pushing block 62 penetrates into the plug-in slot 34 along the radial direction of the swing nut 3 and abuts against the plug-in block 41. A first inclined surface 411 is arranged on one side of the plug-in block 41 close to the swing bolt 2. The side of the first inclined surface 411 away from the swing bolt 2 is also away from the center of the internal gear ring 4. A second inclined surface 621 is arranged on one side of the pushing block 62 close to the plug-in block 41. The second inclined surface 621 cooperates with the first inclined surface 411. When the pushing block 62 slides towards the center of the swing nut 3, the second inclined surface 621 abuts against the first inclined surface 411 and makes the internal gear ring 4 slide in the direction away from the swing bolt 2 until the plug-in block 41 disengages from the plug-in slot 34.

[0045] An operation opening 13 for the manual reset member 6 to be inserted into the plug-in slot 34 is formed on the outer wall of the rotary handle 1. The operation opening 13 is communicated with the plug-in slot 34. A cover plate 14 is clamped at the operation opening 13. An elastic buckle is arranged on the cover plate 14. A clamping slot for the elastic buckle to be inserted is formed at the operation opening 13. The elastic buckle and the clamping slot are in interference fit. The cooperation mode between the elastic buckle on the cover plate 14 and the clamping slot is a conventional interference fit clamping mode, so the specific structure of the cooperation between the elastic buckle and the clamping slot is not shown here. When it is necessary to manually reset the swing nut 3, the cover plate 14 is opened. When the bending motor 5 works normally, the cover plate 14 remains closed, reducing the possibility of dust entering the inside of the rotary handle 1.

[0046] The manual reset part 6 is usually placed in the toolbox. When it is necessary to manually reset the swing head nut 3, take out the manual reset part 6 from the toolbox and open the cover plate 6. After the operation of the manual reset actuator, the stapler is disposed of, and there is no need for the internal gear ring 4 to be reset again.

[0047] When the bending motor 5 of the electric laparoscopic stapler fails, one end of the push block 62 of the manual reset part 6 is inserted into the insertion slot 34. The second inclined surface 621 of the push block 62 abuts against the first inclined surface 411 of the insertion block 41 and makes the internal gear ring 4 slide in the direction away from the swing head bolt 2, so as to realize the separation of the insertion block 41 from the insertion slot 34, and prevent the internal gear ring 4 from being connected to the swing head nut 3 and affecting the reset of the swing head nut 3. Then manually rotate the swing head nut 3 to tighten or loosen the swing head bolt 2 and the swing head nut 3. When the swing head bolt 2 and the swing head nut 3 are tightened, the swing head bolt 2 moves in the direction away from the swing head connecting block 21. When the swing head bolt 2 and the swing head nut 3 are loosened, the swing head bolt 2 moves in the direction close to the swing head connecting block 21, so as to manually control the swing of the swing head connecting block 21 until the actuator is reset to the original ratio state, so that the actuator can be smoothly taken out of the human body, improving the use safety of the electric laparoscopic stapler, reducing the surgical risk, and reducing the occurrence of medical accidents.

[0048] A plurality of insertion blocks 41 are equidistantly arranged along the circumferential direction of the internal gear ring 4, and a plurality of insertion slots 34 are equidistantly arranged along the circumferential direction of the swing head nut 3. The insertion slots 34 correspond to the insertion blocks 41 one by one. In this embodiment, three insertion blocks 41 are provided and three insertion slots 34 are provided, which is convenient for the operator to find the insertion slots 34.

[0049] A round hole 35 is arranged at each end of the length direction of each insertion slot 34 at intervals. The round hole 35 penetrates through both sides of the swing head nut 3 in the thickness direction. The diameter of the orifice of the round hole 35 is smaller than the width of the slot opening of the insertion slot 34. The end face diameter of the operating rod 61 is consistent with the diameter of the orifice of the round hole 35. The operating port 13 covers an insertion slot 34 and two adjacent round holes 35 along the length direction.

[0050] The size of the round hole 35 is smaller than that of the insertion slot 34, so that more round holes 35 for inserting the operating rod 61 can be arranged in the circumferential direction of the swing head nut 3, so that when the swing head nut 3 rotates to any position, the manual reset part 6 has an orifice to penetrate, which is further convenient for the operator to rotate the swing head nut 3.

[0051] Each side edge of the push block 62 is provided with a rounded corner, and the circumferential side edge of the operating rod 61 away from the push block 62 is provided with a rounded corner, which is convenient for the push block 62 to penetrate into the insertion slot 34 and for the operating rod 61 to penetrate into the round hole 35.

[0052] The implementation principle of a manual reset structure for a bending mechanism of an electric laparoscopic stapler in an embodiment of the present application is as follows:

[0053] When the bending motor 5 of the electric laparoscopic stapler fails, one end of the push block 62 of the manual resetting member 6 is inserted into the insertion slot 34. The second inclined surface 621 of the push block 62 abuts against the first inclined surface 411 of the insertion block 41 and causes the internal gear ring 4 to slide away from the swing head bolt 2, so that the insertion block 41 is disengaged from the insertion slot 34, preventing the internal gear ring 4 from being connected to the swing head nut 3 and affecting the resetting of the swing head nut 3. Then manually rotate the swing head nut 3 to tighten or loosen the swing head bolt 2 and the swing head nut 3. When the swing head bolt 2 and the swing head nut 3 are tightened, the swing head bolt 2 moves away from the swing head connection block 21. When the swing head bolt 2 and the swing head nut 3 are loosened, the swing head bolt 2 moves towards the swing head connection block 21, thereby manually controlling the swing of the swing head connection block 21 until the actuator is reset to the original ratio state, enabling the actuator to be smoothly removed from the human body, improving the use safety of the electric laparoscopic stapler, reducing the surgical risk, and reducing the occurrence of medical accidents.

[0054] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A manual reset structure for the bending mechanism of an electric laparoscopic stapler, characterized in that: It includes a swing head bolt (2), a swing head nut (3) and an internal gear ring (4) which are rotatably arranged inside a rotary handle (1). One end of the swing head bolt (2) is rotatably connected to a swing head connecting block (21), and the other end of the swing head bolt (2) is threadedly connected to the swing head nut (3). The swing head nut (3) includes an internal thread section (31) connected to the swing head bolt (2) and an internal smooth section (32) connected to the internal gear ring (4). A receiving ring groove (33) for embedding the internal gear ring (4) is formed on a surface of the internal smooth section (32) away from the swing head bolt (2). A plug-in block (41) is arranged on a surface of the internal gear ring (4) close to the swing head bolt (2), and a plug-in slot (34) for clamping the plug-in block (41) is formed on the inner bottom wall of the receiving ring groove (33). The internal gear ring (4) is slidably connected to the swing head nut (3) through a manual resetting member (6), and the sliding direction of the internal gear ring (4) is the axial direction of the swing head nut (3). The manual resetting member (6) is located on a side of the plug-in block (41) close to the swing head bolt (2). The manual resetting member (6) penetrates into the plug-in slot (34) and abuts against the plug-in block (41). The manual resetting member (6) pushes the internal gear ring (4) in a direction away from the swing head bolt (2) until the plug-in block (41) disengages from the plug-in slot (34). An operation port (13) for inserting the manual resetting member (6) into the plug-in slot (34) is formed on an outer wall of the rotary handle (1), and the operation port (13) communicates with the plug-in slot (34).

2. The manual reset structure for the bending mechanism of the electric endoscopic stapler according to claim 1, wherein: The manual resetting member (6) includes an operation rod (61) and a push block (62) which are connected to each other. The plug-in slot (34) penetrates through two surfaces in the thickness direction of the swing head nut (3). The push block (62) penetrates into the plug-in slot (34) along the radial direction of the swing head nut (3) and abuts against the plug-in block (41). A first inclined surface (411) is arranged on a side of the plug-in block (41) close to the swing head bolt (2), and a side of the first inclined surface (411) away from the swing head bolt (2) is also away from the center of the internal gear ring (4). A second inclined surface (621) is arranged on a side of the push block (62) close to the plug-in block (41), and the second inclined surface (621) cooperates with the first inclined surface (411). When the push block (62) slides towards the center of the swing head nut (3), the second inclined surface (621) abuts against the first inclined surface (411) and makes the internal gear ring (4) slide in a direction away from the swing head bolt (2) until the plug-in block (41) disengages from the plug-in slot (34).

3. The manual reset structure for the bending mechanism of the electric laparoscopic stapler according to claim 1, characterized in that: A plurality of the plug-in blocks (41) are arranged at equal intervals along the circumferential direction of the internal gear ring (4), and a plurality of the plug-in slots (34) are arranged at equal intervals along the circumferential direction of the swing head nut (3). The plug-in slots (34) correspond to the plug-in blocks (41) one by one.

4. The manual reset structure for the bending mechanism of the electric laparoscopic stapler according to claim 2, wherein: A circular hole (35) is arranged at each end of the length direction of each plug-in slot (34) at intervals. The circular hole (35) penetrates through two surfaces in the thickness direction of the swing head nut (3). The diameter of the orifice of the circular hole (35) is smaller than the width of the slot opening of the plug-in slot (34). The end face diameter of the operation rod (61) is consistent with the diameter of the orifice of the circular hole (35).

5. The manual reset structure for the bending mechanism of the electric laparoscopic stapler according to claim 1, wherein: The operation port (13) covers a socket groove (34) and two adjacent round holes (35) along the length direction.

6. The manual reset structure for the bending mechanism of the electric laparoscopic stapler according to claim 2, wherein: Each side edge of the push block (62) is provided with a rounded corner, and the peripheral side edge of the operation rod (61) at the end far from the push block (62) is provided with a rounded corner.

7. The manual reset structure for the bending mechanism of the electric endoscopic stapler according to claim 1, wherein: One end of the fixing frame (12) close to the gear ring is connected with a support roller (121). The support roller (121) is coaxially arranged with the internal gear ring (4), and the internal tooth surface of the internal gear ring (4) contacts the outer peripheral wall of the support roller (121).

8. The manual reset structure for the bending mechanism of the electric endoscopic stapler according to claim 1, wherein: A cover plate (14) is clamped at the operation port (13).

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