CN117752379A - Automatic change electronic laparoscopic surgery anastomat - Google Patents

Abstract

The invention discloses an automatic electric endoscope anastomat, which relates to the technical field of medical appliances, and particularly relates to an automatic electric endoscope anastomat, comprising a gun body, wherein a driving source, a first transmission mechanism, a second transmission mechanism, a manual retracting mechanism, a center rod, an end effector, a short sleeve and an outer sleeve are arranged in an inner cavity of the gun body.

Description

Automatic change electronic laparoscopic surgery anastomat

Technical Field

The invention relates to the technical field of medical appliances, in particular to an automatic electric endoscopic anastomat.

Background

Electric endoscopic staplers have been widely used in abdominal surgery. The electric endoscope anastomat mainly comprises an end effector, a cutting knife assembly, a control button, a driving source and a transmission mechanism, and is used for cutting and anastomosis of tissues in a human body. The control button drives a drive source that provides drive power and the transmission mechanism provides drive power to the end effector and the cutter assembly. The end effector includes a pivotable closed and open jaw for effecting the clamping and release of tissue. The driving source drives the cutter assembly to advance and retreat through the transmission mechanism, the cutter assembly advances to cut and anastomose tissues, and after the cutting anastomosis is finished, the cutter assembly retreats to realize resetting.

However, the existing electric endoscopic anastomat products mostly adopt manual tissue clamping and tissue releasing, electric tissue cutting and anastomosis and resetting, and when thicker tissues are encountered, the manual tissue closing is difficult, so that the operation stability is affected. Some advanced electric anastomat are also provided, and the clamping, releasing, cutting and anastomosing and resetting of tissues are all driven by driving sources, but two different driving sources are adopted, so that the product has large volume, heavy weight, high cost and more control keys which are easy to be confused, and is not ideal from the aspects of operation and economy.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides an automatic electric endoscope anastomat, which solves the problems that two different driving sources are adopted in the prior art, the product has large volume, heavy weight, high cost and more control keys are easy to be confused, and the operation and the economy are not ideal.

In order to achieve the above purpose, the invention is realized by the following technical scheme:

an automatic electric endoscope anastomat comprises a gun body, wherein a driving source, a first transmission mechanism, a second transmission mechanism, a manual tool retracting mechanism, a center rod, an end effector, a short sleeve and an outer sleeve are arranged in the inner cavity of the gun body,

the first transmission mechanism comprises a first gear, a second gear, a connecting rod, a sleeve connecting seat and a first rotating shaft, wherein the first rotating shaft is fixedly connected with an inner cavity of the gun body, the first gear and the second gear are rotatably arranged on the surface of the first rotating shaft, the modulus of the first gear and the modulus of the second gear are the same as the total number of teeth and are coaxial, the connecting rod is fixedly connected with the second gear, the connecting rod is fixedly connected with the sleeve connecting seat, the first gear only keeps partial teeth, the second gear is full teeth, a first boss is arranged on the lower surface of the first gear, a first groove is arranged on the upper surface of the second gear, the lower surface of the first gear is matched with the upper surface of the second gear, the driving source is arranged in the inner cavity of the gun body, the driving source is provided with an output gear which is meshed with the second gear all the time and is meshed with the first gear intermittently,

the second transmission mechanism comprises a third gear, a fourth gear, a fifth gear, a sixth gear and a transmission rack, wherein a second rotating shaft is rotatably arranged in the middle of the third gear and the middle of the fourth gear, the second rotating shaft is fixedly arranged in an inner cavity of the gun body, the modulus and total tooth number of the third gear and the total tooth number of the fourth gear are the same and coaxial, a second groove is formed in the lower surface of the third gear, a second boss is formed in the upper surface of the fourth gear, the lower surface of the third gear is matched with the upper surface of the fourth gear, the fourth gear is divided into an upper part and a lower part, the lower part is full-tooth and is always meshed with an output gear of a driving source, the upper half part of the third gear is intermittently meshed with the output gear of the driving source, the lower half part of the third gear is always meshed with the fifth gear, the fifth gear is meshed with the transmission rack through the sixth gear, a distal groove is formed in the distal end of the transmission rack, and the transmission rack is slidably arranged in the inner cavity of the gun body.

Preferably, the cover plate structure is installed on the gun body, the cover plate structure includes first safety cover plate, second safety cover plate, the inside first safety cover plate that is provided with in gun body top, the inner chamber of the gun body is provided with the circuit board, the tail end fixed mounting in gun body inner chamber has the battery package, install the button on the gun body, button and circuit board electric connection.

Preferably, the manual tool retracting mechanism is located below the first safety cover plate, the manual tool retracting mechanism comprises a manual tool retracting wrench, a tool retracting cam, a pressing plate, a spring, a torsion spring and a tool retracting key, the manual tool retracting wrench is installed in an inner cavity of the gun body through a shaft, the manual tool retracting wrench is provided with a tool retracting boss, a torsion spring groove and an eccentric hole, and the tool retracting cam is provided with a fan-shaped groove.

Preferably, a manual knob is arranged on the connecting rod, the manual knob is positioned in the inner cavity of the gun body, and a second safety cover plate is arranged on the gun body and below the manual knob.

Preferably, the proximal end of the central rod is provided with a proximal boss, and the transmission rack is fixedly connected with the central rod through a distal groove and the proximal boss on the central rod.

And a tooth slot is formed in the transmission rack.

Preferably, the retracting key is provided with a third groove, a third boss, a rotating shaft and a ratchet, the rotating shaft on the retracting key is matched with the eccentric hole of the manual retracting wrench, the torsion spring rotates around the center of the manual retracting wrench, one arm of the torsion spring always abuts against the third groove of the retracting key, and the other arm is always positioned in the torsion spring groove of the manual retracting wrench.

Preferably, the ratchet is matched with the tooth slot.

Preferably, the bottom of the tool retracting cam is contacted with the surface of the pressing plate, the pressing plate is movably mounted on the output shaft of the driving source, the pressing plate is positioned above the sixth gear, the output shaft of the driving source is movably sleeved with a spring, and the top end of the spring is contacted with the sixth gear.

Preferably, a fourth groove is formed in the pressing plate, and a fourth boss is arranged on the tool retracting cam.

The invention provides an automatic electric endoscope anastomat, which has the following beneficial effects:

1. the automatic electric endoscope anastomat is matched with the driving source, the first transmission mechanism, the second transmission mechanism and the manual retracting mechanism to be used, so that the automatic electric endoscope anastomat controls the closing and opening of the jaws and the advancing and retreating of the cutting knife assembly, realizes the clamping and releasing of tissues and the cutting anastomosis and the resetting of the cutting knife assembly, is driven by the same driving source, has compact structure, small volume, light weight, few control keys, convenient operation and low cost, solves the problem of unstable manual closing operation, and improves the functionality of the automatic electric endoscope anastomat.

2. According to the automatic electric endoscope anastomat, the manual tool retracting wrench is lifted upwards, the tool retracting cam is driven to rotate anticlockwise by the manual tool retracting wrench, the pressing plate is pressed downwards by the tool retracting cam until a fourth boss on the tool retracting cam rotates into a fourth groove of the pressing plate, a surface A and a surface B of the tool retracting cam are respectively contacted with a surface A and a surface B of the pressing plate, at the moment, a sixth gear is pressed downwards to a certain position and is disengaged from a transmission rack, the state can not be reset, meanwhile, the tool retracting key is driven to rotate towards the near end by rotation of the manual tool retracting wrench, a third boss on the tool retracting key is separated from the limit of a gun body, the tool retracting key is pressed downwards under the action of a torsion spring, a tooth groove on a ratchet and the transmission rack is meshed, the meshing state is kept, at the moment, the manual tool retracting wrench is rocked up and down in a reverse mode, the tool retracting key drives the transmission rack to move towards the near end until the transmission rack is completely reset, and the manual tool retracting can be realized, and the use safety is higher.

Drawings

FIG. 1 is a schematic cross-sectional view of the present invention;

FIG. 2 is a schematic view of a part of the structure of the present invention;

FIG. 3 is a schematic diagram of the front face of the manual retracting mechanism of the present invention;

FIG. 4 is a schematic view of the back of the manual retracting mechanism of the present invention;

FIG. 5 is a schematic view of the structure of the retracting cam and the pressing plate of the present invention;

FIG. 6 is a schematic view of the structure of the retracting key of the present invention;

FIG. 7 is a schematic view of a manually opened, jaw closed configuration of the present invention;

FIG. 8 is a schematic diagram of the first, second, third and fourth gears according to the present invention;

fig. 9 is a schematic structural view of the appearance of the present invention.

In the figure: 1. a first gear; 2. a second gear; 3. a third gear; 4. a fourth gear; 5. a fifth gear; 6. a sixth gear; 7. a circuit board; 8. a central rod; 9. a torsion spring; 10. a drive rack; 11. a second safety cover plate; 12. a first safety cover plate; 13. a manual retracting mechanism; 14. a button; 15. a battery pack; 16. a distal recess; 17. a proximal boss; 18. a sleeve connecting seat; 19. a manual knob; 20. a manual tool retracting wrench; 21. a retracting cam; 22. a pressing plate; 23. a spring; 24. a tool retracting key; 25. an output gear; 26. a tool retracting boss; 27. a fan-shaped groove; 28. a fourth boss; 29. a fourth groove; 30. a rotating shaft; 31. a ratchet; 32. a torsion spring groove; 33. a first boss; 34. a first groove; 35. a second groove; 36. a second boss; 37. a third boss; 38. a third groove; 39. a fifth boss; 41. a connecting rod; 49. a driving source; 50. a gun body.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.

Referring to fig. 1 to 8, the present invention provides a technical solution: an automatic electric endoscope anastomat comprises a gun body 50, wherein a driving source 49, a first transmission mechanism, a second transmission mechanism, a manual knife retracting mechanism 13, a center rod 8, an end effector, a short sleeve and an outer sleeve are arranged in the inner cavity of the gun body 50,

the first transmission mechanism comprises a first gear 1, a second gear 2, a connecting rod 41, a sleeve connecting seat 18 and a first rotating shaft, wherein the first rotating shaft is fixedly connected to an inner cavity of a gun body 50, the surface of the first rotating shaft is rotatably provided with the first gear 1 and the second gear 2, the modulus and total tooth number of the first gear 1 and the second gear 2 are the same, and the same is coaxial, the connecting rod 41 is fixedly connected with the second gear 2, the connecting rod 41 is fixedly connected with the sleeve connecting seat 18, the sleeve connecting seat 18 is fixedly connected with an outer sleeve, an end effector comprises a pivotable jaw and a short sleeve structure, the short sleeve is in contact with an outer sleeve pipeline and can relatively pivot, the short sleeve can axially move along the end effector, the jaw comprises a nail bin seat and a nail abutting seat, the nail abutting seat relatively to the nail bin seat and pivot to form an openable and closable jaw, the first gear 1 only keeps partial teeth, the second gear 2 is full teeth, the lower surface of the first gear 1 is provided with a first boss 33, the upper surface of the second gear 2 is provided with a first groove 34, the lower surface of the first gear 1 is matched with the upper surface of the second gear 2, a driving source 49 is arranged on the first gear 25 and is meshed with the first gear 25, the intermittent output shaft is meshed with the first gear 25, the driving source is meshed with the intermittent gear 25, and the first gear 2 is meshed with the intermittent output shaft 25,

the second transmission mechanism comprises a third gear 3, a fourth gear 4, a fifth gear 5, a sixth gear 6 and a transmission rack 10, wherein a second rotating shaft is rotatably arranged in the middle of the third gear 3 and the fourth gear 4, the second rotating shaft is fixedly arranged in an inner cavity of a gun body 50, the modulus and total tooth number of the third gear 3 and the fourth gear 4 are the same and coaxial, a second groove 35 is formed in the lower surface of the third gear 3, a second boss 36 is formed in the upper surface of the fourth gear 4, the lower surface of the third gear 3 is matched with the upper surface of the fourth gear 4, the fourth gear 4 is divided into an upper part and a lower part, the lower part is full-tooth and is always meshed with an output gear 25 of a driving source 49, the upper half part of the third gear 3 is partially-tooth meshed with the output gear 25 of the driving source 49, the lower half part of the third gear 3 is always meshed with the fifth gear 5, the fifth gear 5 is meshed with the transmission rack 10 through the sixth gear 6, a distal groove 16 is formed in the distal end of the transmission rack 10, and the transmission rack 10 is slidably arranged in the inner cavity of the gun body 50.

Wherein install the apron structure on the rifle body 50, the apron structure includes first safety apron 12, second safety apron 11, and the inside first safety apron 12 that is provided with in rifle body 50 top, the inner chamber of rifle body 50 is provided with circuit board 7, and the tail end fixed mounting in rifle body 50 inner chamber has battery package 15, installs button 14 on the rifle body 50, button 14 and circuit board 7 electric connection are equipped with a multidirectional control button, can brake about from top to bottom. The up-down braking drives the driving source 49 to rotate positively and negatively, and at different stages, the closing and opening of the jaws or the forward and backward movement of the cutter assembly are controlled, so that the clamping and releasing of tissues or the forward movement (the cutting anastomosis of tissues) and the backward movement (the resetting of the cutter assembly) of the cutter assembly are realized. Left and right braking, driving the drive source 49 to rotate in a forward and reverse direction, drives the end effector and the cutter assembly to bend, and facilitates the end effector and the cutter assembly to reach the intended surgical position.

The manual tool retracting mechanism 13 is located below the first safety cover plate 12, the manual tool retracting mechanism 13 comprises a manual tool retracting wrench 20, a tool retracting cam 21, a pressing plate 22, a spring 23, a torsion spring 9 and a tool retracting key 24, the manual tool retracting wrench 20 is installed in an inner cavity of the gun body 50 through a shaft, a tool retracting boss 26, a torsion spring groove 32 and an eccentric hole are formed in the manual tool retracting wrench 20, and a fan-shaped groove 27 is formed in the tool retracting cam 21.

The connecting rod 41 is provided with a manual knob 19, the manual knob 19 is positioned in the inner cavity of the gun body 50, and the gun body 50 is provided with a second safety cover plate 11 below the manual knob 19.

Wherein the proximal end of the central rod 8 is provided with a proximal boss 17, the transmission rack 10 is fixedly connected with the central rod 8 through a distal groove 16 and the proximal boss 17 on the central rod 8, the distal end of the central rod 8 is fixedly connected with a cutting knife assembly, thereby realizing the axial movement of the cutting knife assembly,

wherein, the transmission rack 10 is provided with tooth grooves.

Wherein, the retracting key 24 is provided with a third groove 38, a third boss 37, a rotating shaft 30 and a ratchet 31, the rotating shaft 30 on the retracting key 24 is matched with the eccentric hole of the manual retracting wrench 20, the torsion spring 9 rotates around the center of the manual retracting wrench 20, one arm of the torsion spring 9 always abuts against the third groove 38 of the retracting key 24, and the other arm is always positioned in the torsion spring groove 32 of the manual retracting wrench 20, so that the retracting key 24 is in a pressing state consistently.

Wherein the ratchet 31 is engaged with the tooth slot.

The bottom of the retracting cam 21 contacts with the surface of the pressing plate 22, the pressing plate 22 is movably mounted on the output shaft of the driving source 49, the pressing plate 22 is located above the sixth gear 6, the output shaft of the driving source 49 is movably sleeved with the spring 23, and the top end of the spring 23 contacts with the sixth gear 6.

The pressing plate 22 is provided with a fourth groove 29, and the retracting cam 21 is provided with a fourth boss 28.

Wherein the drive source 49 is a motor.

The initial state is when the jaw is opened: the first boss 33 of the first gear 1 is located at the initial position of the first groove 34 on the second gear 2, the second boss 36 of the fourth gear 4 is located at the initial position of the second groove 35 on the third gear 3, and the toothed portion of the second gear 2 is engaged with the output gear 25 on the drive source 49; the portion of the upper half of the fourth gear 4 where there is no tooth is in a position to mesh with the output gear 25 on the drive source 49;

closing the jaws: after the driving source 49 is started, the output shaft of the driving source 49 drives the output gear 25 to rotate clockwise, and simultaneously drives the first gear 1 and the second gear 2 to rotate anticlockwise, so that the connecting rod 41 drives the sleeve connecting seat 18 and the outer sleeve to move along the axial distal end, and further drives the short sleeve to move along the axial direction of the end effector, drives the nail supporting seat to pivot and closes the jaw, and the process also becomes an effective stroke of the first transmission mechanism; in this process, the output gear 25 of the driving source 49 drives the fourth gear 4 to rotate anticlockwise, and in the rotating process, the boss of the fourth gear 4 slides in the groove of the third gear 3, the fourth gear 4 remains stationary, and the rotation of the fifth gear 5 and the sixth gear 6 and the movement of the transmission rack 10 cannot be driven, so that the fourth gear 4 is said to be in an ineffective stroke at present; the position where the first gear 1 of the first transmission mechanism and the output gear 25 are meshed rotates to a portion without teeth, and the jaws are completely closed; a boss of a fourth gear 4 in the second transmission mechanism rotates to the tail end position of a chute of a third gear 3;

cutting and anastomosis: the control button 14 makes the output gear 25 of the driving source 49 continue to rotate clockwise, the second gear 2 continues to rotate anticlockwise, and the first boss 33 of the first gear 1 slides in the first groove 34 of the second gear 2, so that the first gear 1 cannot be driven; meanwhile, as the meshing position of the output gear 25 and the first gear 1 is not provided with teeth, the output gear 25 cannot directly drive the first gear 1, so that the first gear 1 is kept still, a subsequent related mechanism cannot be driven, and an ineffective stroke of the first transmission mechanism is entered; the fourth gear 4 drives the third gear 3, the fifth gear 5 and the sixth gear 6 to rotate, the second transmission mechanism enters an effective stroke and pushes the rack to move towards the far end, and the rack pushes the cutting knife to move towards the far end through the center rod 8, so that tissue cutting and anastomosis are realized; until the toothless part of the upper half of the fourth gear 4 is rotated to a position engaged with the output gear 25 of the driving source 49, the cutting anastomosis is completed; at this time, the protrusion of the first gear 1 is located at the end position of the groove of the second gear 2;

resetting the cutting knife assembly: after the above action, the control button 14 makes the output gear 25 of the driving source 49 rotate anticlockwise, drives the fourth gear 4 to rotate clockwise, the toothed part of the upper half part of the fourth gear 4 enters into a meshing state with the output gear 25 of the driving source 49, the second transmission mechanism enters into an effective stroke, and then drives the third gear 3, the fourth gear 4 and the fifth gear 5 to rotate, and drives the transmission rack 10 to move proximally until the upper half part of the fourth gear 4 rotates to a toothless part, the fourth gear 4 and the fifth gear 5 are disengaged, and the cutter returns to the initial position; during the reset period of the cutter, the output gear 25 drives the second gear 2 to rotate clockwise, the bulge of the first gear 1 slides in the groove of the second gear 2, and meanwhile, as the meshing position of the first gear 1 and the output gear 25 is not toothed at present, the anticlockwise rotation of the second gear 2 and the output gear 25 can not drive the first gear 1 and a related transmission mechanism at the back, the first transmission mechanism enters an ineffective stroke, and the jaws still keep a closed state; when the cutter returns to the initial position, the first boss 33 of the first gear 1 slides to the initial position of the first groove 34 on the second gear 2;

the jaw is opened: after the above action, the control button 14 makes the output gear 25 of the driving source 49 continue to rotate anticlockwise, the output gear 25 drives the second gear 2 to rotate clockwise, and as the protrusion of the first gear 1 moves to the initial position of the groove of the second gear 2, the clockwise rotation of the second gear 2 drives the first gear 1 to rotate clockwise synchronously, and then the short sleeve of the end effector is pulled to move proximally through the connecting rod 41, the sleeve connecting seat 18 and the outer sleeve, the external constraint is released, the nail propping seat pivots outwards around the nail cartridge seat, and the jaw is opened; in this process, the output gear 25 still drives the fourth gear 4 to rotate clockwise, but because the protrusion of the fourth gear 4 slides in the groove of the third gear 3, the third gear 3 cannot be driven to rotate clockwise, and the fifth gear 5, the sixth gear 6 and the driving rack 10 at the back cannot be driven to enter an ineffective stroke; the cutter position remains unchanged until the position where the first gear 1 and the output gear 25 mesh is turned to a portion without teeth, the jaws are fully opened and the tissue is fully released; at this time, the projection of the fourth gear 4 moves to the initial position of the groove of the third gear 3; all the transmission mechanisms return to the initial state;

normal electric control: the spring 23 pushes up the sixth gear 6, so that the sixth gear 6 can be meshed with the transmission rack 10, and further the rotation of the output gear 25 on the driving source 49 finally drives the transmission rack 10 to move proximally through gear transmission, and drives the cutting knife assembly to move proximally to realize reset; the back of the tool retracting key 24 is provided with a third boss 37, the third boss 37 is clamped on the gun body 50, and even if the torsion spring 9 is pressed down, the tool retracting key 24 in the current state still cannot be contacted with the transmission rack 10, so that the manual tool retracting mechanism 13 is in a non-working state at the moment;

manual tool retracting: opening the first safety cover plate 12 to expose the manual retracting mechanism 13; lifting the manual retracting wrench 20 upward; the manual tool retracting wrench 20 drives the tool retracting cam 21 to rotate anticlockwise, the tool retracting cam 21 presses the pressing plate 22 downwards until a fourth boss 28 on the tool retracting cam 21 rotates into a fourth groove 29 of the pressing plate 22, and the surface A and the surface B of the tool retracting cam 21 are respectively contacted with the surface A and the surface B of the pressing plate 22; at this time, the sixth gear 6 is pressed down to a certain position, disengaged from the drive rack 10, and kept in this state, and cannot be reset; simultaneously, the rotation of the manual tool retracting wrench 20 drives the tool retracting key 24 to rotate proximally, the third boss 37 of the tool retracting key 24 is separated from the limit of the gun body 50, the tool retracting key 24 is pressed down under the action of the torsion spring 9, and the ratchet teeth 31 are meshed with tooth grooves on the transmission rack 10 and keep the meshed state; at this time, the manual retracting wrench 20 is repeatedly rocked up and down, and the retracting key 24 drives the transmission rack 10 to move proximally until the transmission rack 10 is completely reset;

principle of manual opening and closing of jaws: the tail end of the manual knob 19 is provided with a fifth boss 39, the middle is provided with threads, and the head end is provided with a nut; the distal end of the connecting rod 41 is provided with a pin hole which can accommodate a fifth boss 39 on the manual knob 19; the proximal end of the sleeve connecting seat 18 is provided with a stepped hole, the upper layer is a light hole, the through hole can accommodate a fifth boss 39 on the manual knob 19, the lower layer is a threaded through hole, and threads are matched with threads on the manual knob 19; in normal operation, the manual knob 19 acts as a connecting shaft to fixedly connect the sleeve connecting seat 18 and the connecting rod 41; in case of emergency, the second safety cover plate 11 is opened, and the manual knob 19 is exposed; the manual knob 19 is rotated out anticlockwise until the fifth boss 39 and the connecting rod 41 on the manual knob 19 are completely separated and completely fall into the light hole of the sleeve connecting seat 18; at this time, the connecting rod 41 is disconnected from the sleeve connecting seat 18, and the driving source 49 no longer controls the outer sleeve; the manual knob 19 is still connected with the sleeve connecting seat 18 at the moment; the manual knob 19 is moved along the axial direction, so that the sleeve connecting seat 18, the outer sleeve and the short sleeve can be driven to move along the axial direction; moving proximally opens the jaws, releases tissue, and moving distally closes the jaws.

The last points to be described are: first, in the description of the present application, it should be noted that, unless otherwise specified and defined, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be mechanical or electrical, or may be a direct connection between two elements, and "upper," "lower," "left," "right," etc. are merely used to indicate relative positional relationships, which may be changed when the absolute position of the object being described is changed;

secondly: in the drawings of the disclosed embodiments, only the structures related to the embodiments of the present disclosure are referred to, and other structures can refer to the common design, so that the same embodiment and different embodiments of the present disclosure can be combined with each other under the condition of no conflict;

finally: the foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.

Claims (10)

1. An automatic change electronic laparoscopic anastomat, includes rifle body (50), its characterized in that: the inner cavity of the gun body (50) is provided with a driving source (49), a first transmission mechanism, a second transmission mechanism, a manual tool retracting mechanism (13) and a center rod (8);

the first transmission mechanism comprises a first gear (1), a second gear (2), a connecting rod (41), a sleeve connecting seat (18) and a first rotating shaft;

the second transmission mechanism comprises a third gear (3), a fourth gear (4), a fifth gear (5), a sixth gear (6) and a transmission rack (10), the manual tool retracting mechanism (13) comprises a manual tool retracting spanner (20), a tool retracting cam (21), a pressing plate (22), a spring (23), a torsion spring (9) and a tool retracting key (24),

the gun body (50) is provided with a cover plate structure.

2. An automated electric endoscopic stapler according to claim 1, wherein: the first rotating shaft is fixedly connected with the inner cavity of the gun body (50), a first gear (1) and a second gear (2) are rotatably arranged on the surface of the first rotating shaft, the first gear (1) and the second gear (2) have the same modulus and total tooth number and are coaxial, the connecting rod (41) is fixedly connected with the second gear (2), the connecting rod (41) is fixedly connected with the sleeve connecting seat (18), only part of teeth are reserved on the first gear (1), the second gear (2) is full-tooth, a first boss (33) is arranged on the lower surface of the first gear (1), a first groove (34) is formed on the upper surface of the second gear (2), the lower surface of the first gear (1) is matched with the upper surface of the second gear (2), the driving source (49) is arranged in the inner cavity of the gun body (50), the output gear (25) is arranged on the driving source (49), the output gear (25) is always meshed with the second gear (2) and is intermittently meshed with the first gear (1),

the middle part rotation of third gear (3) and fourth gear (4) is installed the second pivot, and second pivot fixed mounting has the output gear (25) at rifle body (50) inner chamber, the modulus and the total tooth number of third gear (3) and fourth gear (4) are the same and coaxial heart, and third gear (3) lower surface is equipped with second recess (35), and fourth gear (4) upper surface is equipped with second boss (36), the lower surface of third gear (3) and the upper surface cooperation of fourth gear (4), upper and lower two parts are divided into full tooth and are engaged with output gear (25) of driving source (49) all the time to fourth gear (4), the upper half of third gear (3) is partial tooth and the intermittent engagement of output gear (25) of driving source (49), the lower half of third gear (3) is always engaged with fifth gear (5), fifth gear (5) are engaged with transmission (10) through sixth gear (6), and transmission (10) distal end are equipped with rack (16), rack (10) are seted up on rack (10) the rack (50) and are installed in the inner chamber.

3. An automated electric endoscopic stapler according to claim 2, wherein: the cover plate structure comprises a first safety cover plate (12) and a second safety cover plate (11), the first safety cover plate (12) is arranged inside the top end of the gun body (50), a circuit board (7) is arranged in the inner cavity of the gun body (50), a battery pack (15) is fixedly arranged at the tail end of the inner cavity of the gun body (50), a button (14) is arranged on the gun body (50), and the button (14) is electrically connected with the circuit board (7).

4. An automated electric endoscopic stapler according to claim 3, wherein: the manual tool retracting mechanism (13) is located below the first safety cover plate (12), the manual tool retracting wrench (20) is installed in an inner cavity of the gun body (50) through a shaft, the manual tool retracting wrench (20) is provided with a tool retracting boss (26), a torsion spring groove (32) and an eccentric hole, and the tool retracting cam (21) is provided with a fan-shaped groove (27).

5. An automated electric endoscopic stapler according to claim 4, wherein: the manual knob (19) is arranged on the connecting rod (41), the manual knob (19) is positioned in the inner cavity of the gun body (50), and the second safety cover plate (11) is arranged on the gun body (50) and below the manual knob (19).

6. An automated electric endoscopic stapler according to claim 5, wherein: the proximal end of the central rod (8) is provided with a proximal boss (17), and the transmission rack (10) is fixedly connected with the central rod (8) through a distal groove (16) and the proximal boss (17) on the central rod (8).

7. An automated electric endoscopic stapler according to claim 8, wherein: be equipped with third recess (38), third boss (37), pivot (30), ratchet (31) on the backswing key (24), pivot (30) on backswing key (24) and the eccentric orifices cooperation of manual backswing spanner (20), the center rotation of torsional spring (9) around manual backswing spanner (20), and one arm of torsional spring (9) is in third recess (38) of backswing key (24) all the time, and another arm is located torsional spring groove (32) of manual backswing spanner (20) all the time.

8. An automated electric endoscopic stapler according to claim 7, wherein: the ratchet (31) is matched with the tooth slot.

9. An automated electric endoscopic stapler according to claim 3, wherein: the bottom of the tool retracting cam (21) is contacted with the surface of the pressing plate (22), the pressing plate (22) is movably mounted on an output shaft of the driving source (49), the pressing plate (22) is located above the sixth gear (6), a spring (23) is movably sleeved on the output shaft of the driving source (49), and the top end of the spring (23) is contacted with the sixth gear (6).

10. An automated electric endoscopic stapler according to claim 9, wherein: the pressing plate (22) is provided with a fourth groove (29), and the tool retracting cam (21) is provided with a fourth boss (28).