Signal transmission structure for an electric endoscopic stapler and an electric endoscopic stapler

Abstract

The present invention relates to a signal transmission structure for an electric laparoscopic stapler and an electric laparoscopic stapler. The signal transmission structure for the electric laparoscopic stapler includes a driving housing, in which a motor and a lead screw connected to the output shaft of the motor are provided. A translation nut is sleeved outside the lead screw, and a sleeve is sleeved outside the translation nut. The sleeve circumferentially limits the rotation of the translation nut. The translation nut can be connected to a cutting knife in various types of anvil assemblies through a firing rod; the sleeve is connected to the driving housing, and a rotating housing is covered outside the sleeve. A conductive slip ring is provided between the outer wall of the sleeve and the inner wall of the rotating housing. The conductive slip ring is respectively connected to the action control end of the cutting knife in the anvil assembly and the main control board for controlling the working state of the motor through signal connection lines on both sides thereof. The present invention solves the technical problems of poor adaptability, cumbersome operation and inconvenient use of laparoscopic staplers.

Description

Technical Field

[0001] The present invention relates to the field of medical devices. Further, it relates to a signal transmission structure for an electric laparoscopic stapler and an electric laparoscopic stapler, and particularly to a structure and an electric laparoscopic stapler for multi-stroke control of an electric laparoscopic stapler and capable of achieving stable signal transmission. Background Art

[0002] A stapler is a device used in surgery to replace manual suturing. Its working principle is to use titanium nails or stainless steel nails to cut or anastomose tissues. Its advantages are as follows: rapid suturing, simple operation, saving surgical time; single-use, avoiding cross-infection; using titanium nails or stainless steel nails, with tight and appropriate suturing; few side effects and surgical complications, etc. It also enables the resection of tumors that could not be removed in the past, and is very popular among surgeons.

[0003] The applicable scope of staplers has covered various fields such as gastrointestinal surgery, hepatobiliary surgery, thoracic surgery, urology, and obstetrics and gynecology, becoming one of the essential tools for doctors. Replacing manual suturing with instruments has multiple advantages for patients, such as less bleeding during the operation, reduced surgical time, reduced errors caused by manual work, avoiding infection, and rapid postoperative functional recovery. However, the disadvantages of existing laparoscopic staplers are as follows: poor adaptability, one model of laparoscopic stapler can only meet the needs of one length of cutting and anastomosis, inconvenient to use. Once it is necessary to replace an anvil assembly of a different model during the operation, it may delay the best treatment time of the operation and cause irreversible harm to the patient. Therefore, existing laparoscopic staplers have poor adaptability and cannot guarantee safety and stability.

[0004] Regarding the problems of poor adaptability, cumbersome operation, and inconvenient use of laparoscopic staplers in the related art, no effective solution has been given yet.

[0005] Therefore, based on the experience and practice of being engaged in the relevant industry for many years, the inventor of the present invention proposes a signal transmission structure for an electric laparoscopic stapler and an electric laparoscopic stapler to overcome the defects of the prior art. Summary of the Invention

[0006] The purpose of the present invention is to provide a signal transmission structure for an electric laparoscopic stapler and an electric laparoscopic stapler. By adding a conductive slip ring, it can be adapted to various models of anvil assemblies, and the signal transmission line will not be entangled or knotted during the operation, ensuring the smooth transmission of control signals and the stable operation of the laparoscopic stapler.

[0007] Another object of the present invention is to provide a signal transmission structure for an electric laparoscopic stapler and an electric laparoscopic stapler, which are provided with a plurality of travel switches. The installation positions of the travel switches correspond to anvil assemblies of different models, so that the travel distances of anvil assemblies of different models can be automatically controlled, and the automation and intelligence levels of the product are greatly improved.

[0008] The object of the present invention can be achieved by the following technical solutions:

[0009] The present invention provides a signal transmission structure for an electric laparoscopic stapler, including a driving housing. A motor and a lead screw connected to the output shaft of the motor are arranged inside the driving housing. A translation nut is sleeved outside the lead screw, and a sleeve is sleeved outside the translation nut. The sleeve is connected to the driving housing, and the sleeve circumferentially limits the rotation of the translation nut. The translation nut can be connected to a cutting knife in various models of anvil assemblies through a firing rod;

[0010] A rotating housing is sleeved outside the sleeve, and a conductive slip ring is arranged between the outer wall of the sleeve and the inner wall of the rotating housing. The conductive slip ring is respectively connected to the action control end of the cutting knife in the anvil assembly and the main control board for controlling the working state of the motor through signal connecting lines on both sides thereof.

[0011] In a preferred embodiment of the present invention, the conductive slip ring includes an inner slip ring and an outer slip ring rotatably sleeved outside the inner slip ring. A plurality of signal connecting lines connected to each other are respectively led out on the inner slip ring and the outer slip ring. The conductive slip ring is sleeved outside the sleeve, and the inner slip ring is connected to the outer wall of the sleeve. The control signal output end of the main control board is connected to the control end of the motor;

[0012] The outer slip ring is connected to the action control end of the cutting knife in the corresponding anvil assembly through the signal connecting line, and the inner slip ring is connected to the detection signal receiving end of the main control board through the signal connecting line; or the inner slip ring is connected to the action control end of the cutting knife in the corresponding anvil assembly through the signal connecting line, and the outer slip ring is connected to the detection signal receiving end of the main control board through the signal connecting line.

[0013] In a preferred embodiment of the present invention, the driving housing is a cylindrical structure with openings at both ends. The motor is located inside the driving housing. The power supply end of the motor is connected to the main control board through a power transmission line. The power transmission line connected to the main control board passes through one end of the driving housing and is connected to a power supply located at the handle position. The output shaft of the motor passes through the other end of the driving housing and is connected to one end of the lead screw. The other end of the lead screw extends axially away from the motor along the driving housing.

[0014] In a preferred embodiment of the present invention, the translation nut is a cylindrical structure with openings at both ends. An internal thread that mates with the lead screw is provided on the inner wall of the translation nut. The translation nut is threadedly connected to the lead screw. A first translation slideway that penetrates the translation nut is axially provided on the outer wall of the translation nut along the axis of the translation nut. A second translation slideway that penetrates the sleeve is axially provided on the inner wall of the sleeve along the axis of the sleeve. The first translation slideway is in fit with the second translation slideway.

[0015] In a preferred embodiment of the present invention, the sleeve is a cylindrical structure with openings at both ends. One end of the sleeve extends into the interior of the drive housing and is fixedly connected to the drive housing. The other end of the sleeve is located outside the drive housing. The translation nut can move axially along the sleeve and is connected to one end of the firing rod. The other end of the firing rod is hinged to the cutting knife in the anvil assembly.

[0016] In a preferred embodiment of the present invention, the signal transmission structure for the electric laparoscopic stapler further includes a sub-control board. The sub-control board is disposed on the outer wall of the sleeve. A plurality of travel switches are axially spaced along the axis of the drive housing on the sub-control board. The control signal output end of the main control board is respectively connected to the control ends of each travel switch. The contacts on each travel switch pass through the side wall of the sleeve and extend into the interior of the sleeve to trigger the corresponding travel switch to act after the translation nut moves a preset distance in the anvil assembly.

[0017] In a preferred embodiment of the present invention, a bearing is provided between one end of the lead screw close to the motor and the inner wall of the drive housing, and a circlip for preventing the axial movement of the lead screw is provided between the lead screw and the inner wall of the drive housing.

[0018] The present invention provides an electric laparoscopic stapler. The electric laparoscopic stapler includes a handle housing, anvil assemblies of multiple models, and the above-mentioned signal transmission structure for the electric laparoscopic stapler. The signal transmission structure for the electric laparoscopic stapler is located in the handle housing, and the signal transmission structure for the electric laparoscopic stapler can be adaptively connected to the anvil assemblies of various models respectively.

[0019] In a preferred embodiment of the present invention, the electric laparoscopic stapler further includes a rotating shell. The rotating shell is rotatably connected to the handle housing, and a drive module for controlling the movement of the cutting knife in the anvil assembly is provided in the rotating shell.

[0020] In a preferred embodiment of the present invention, the electric endoscopic stapler further includes a control button, which is arranged on the handle housing and is connected to the control signal receiving end of the main control board.

[0021] As described above, the characteristics and advantages of the signal transmission structure for the electric endoscopic stapler and the electric endoscopic stapler of the present invention are as follows: A conductive slip ring is added between the sleeve and the rotating shell of the electric endoscopic stapler. The conductive slip ring is respectively connected to the action control end of the cutting knife in the anvil assembly and the main control board for controlling the working state of the motor through the signal connecting wires on both sides thereof. The stability of signal transmission is improved through the conductive slip ring, thereby avoiding the situation that the signal connecting wires are wound or knotted due to the rotation of the rotating shell. It is convenient to use and simple to operate, ensuring the stable control of the main control board over the cutting knife and the motor in the anvil assembly, and ensuring the long-term and stable working state of the electric endoscopic stapler. In addition, the electric endoscopic stapler of the present invention can be adapted to various types of anvil assemblies and has good applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The following drawings are only intended to illustrate and explain the present invention schematically and do not limit the scope of the present invention. Among them:

[0023] Figure 1 : Schematic diagram of the installation position of the conductive slip ring in the signal transmission structure for the electric endoscopic stapler of the present invention.

[0024] Figure 2 : Internal structure connection diagram of the signal transmission structure for the electric endoscopic stapler of the present invention.

[0025] Figure 3 : Schematic diagram of the structure of the conductive slip ring in the signal transmission structure for the electric endoscopic stapler of the present invention (one).

[0026] Figure 4 : Schematic diagram of the structure of the conductive slip ring in the signal transmission structure for the electric endoscopic stapler of the present invention (two).

[0027] Figure 5 : Schematic diagram of the installation position of the anvil assembly in the signal transmission structure for the electric endoscopic stapler of the present invention.

[0028] Figure 6 : Connection structure block diagram of the signal transmission structure for the electric endoscopic stapler of the present invention.

[0029] The reference numerals in the present invention are:

[0030] 1. Conductive slip ring; 101. Inner ring of the slip ring;

[0031] 102. Outer ring of the slip ring; 2. Main control board;

[0032] 3. Anvil assembly; 4. Motor;

[0033] 5. Sub-control board; 501. Travel switch;

[0034] 6. Power supply; 7. Lead screw;

[0035] 8. Translation nut; 9. Sleeve;

[0036] 10. Rotating shell; 11. Firing rod;

[0037] 12. Driving housing; 13. Handle housing;

[0038] 14. Bearing; 15. Circlip;

[0039] 16. Control button. Detailed implementation manners

[0040] For a clearer understanding of the technical features, objectives, and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings.

[0041] Embodiment 1

[0042] As shown in Figures 1 to 6 , the present invention provides a signal transmission structure for an electric laparoscopic stapler. The signal transmission structure for the electric laparoscopic stapler includes a driving housing 12 disposed inside the electric laparoscopic stapler. A motor 4 and a lead screw 7 connected to the output shaft of the motor 4 are disposed inside the driving housing 12. A translation nut 8 threadedly connected to the lead screw 7 is sleeved outside the lead screw 7. A sleeve 9 is sleeved outside the translation nut 8. The sleeve 9 is fixedly connected to the driving housing 12. A rotational limiting structure is disposed between the sleeve 9 and the translation nut 8 to limit the circumferential rotation of the translation nut 8. During the rotation of the lead screw 7, the translation nut 8 only moves axially along the sleeve 9. The translation nut 8 can be connected to the cutting knife in various types of anvil assemblies 3 through a firing rod 11. A rotating shell 10 is disposed outside the sleeve 9. A conductive slip ring 1 (i.e., a collector ring, which is a power transmission device for realizing the transmission of image and data signals between two relatively rotating mechanisms) is disposed between the outer wall of the sleeve 9 and the inner wall of the rotating shell 10. One side of the conductive slip ring 1 is connected to the action control end of the cutting knife in the anvil assembly 3 through a signal connection line. The other side of the conductive slip ring 1 is connected to the main control board 2 for controlling the working state of the motor 4 through a signal connection line.

[0043] In the present invention, a conductive slip ring 1 is added between the sleeve 9 and the rotating shell 10 of the electric endoscopic stapler. The conductive slip ring 1 is respectively connected to the action control end of the cutting knife in the anvil assembly 3 and the main control board 2 through the signal connection lines on both sides thereof. During the use of the electric endoscopic stapler, it is necessary to rotate the rotating shell 10 to control the action state of the cutting knife in the anvil assembly 3. The conductive slip ring 1 improves the stability of signal transmission, thereby avoiding the situation that the signal connection lines are wound or knotted due to the rotation of the rotating shell 10. It is convenient to use and simple to operate, ensuring the stable control of the main control board 2 over the anvil assembly 3 and the motor 4, and ensuring the long-term and stable working state of the electric endoscopic stapler.

[0044] The electric endoscopic stapler of the present invention can be adapted to various models of anvil assemblies 3. During the use of the electric endoscopic stapler, different conductive slip rings 1 can be replaced to adjust the number of signal connection lines on the conductive slip ring 1, ensuring that the conductive slip ring 1 can be adapted to various models of anvil assemblies 3, improving the applicability of the product, and enabling the rapid iteration and upgrade of the product without complex modification of the product structure.

[0045] Specifically, as Figure 1 , Figure 3 , Figure 4 , Figure 6 shown, the conductive slip ring 1 includes a slip ring inner ring 101 and a slip ring outer ring 102 rotatably sleeved outside the slip ring inner ring 101. Multiple connected signal connection lines are respectively led out on the slip ring inner ring 101 and the slip ring outer ring 102. The conductive slip ring 1 is sleeved outside the sleeve 9, and the slip ring inner ring 101 is fixedly connected to the outer wall of the sleeve 9. The control signal output end of the main control board 2 is connected to the control end of the motor 4. Multiple signal connection lines are respectively led out on the slip ring outer ring 102 and the slip ring inner ring 101. When each signal connection line on the slip ring outer ring 102 is respectively connected to the action control end of the cutting knife in the corresponding anvil assembly 3, each signal line on the slip ring inner ring 101 is connected to the detection signal receiving end of the main control board; when each signal connection line on the slip ring inner ring 101 is respectively connected to the action control end of the cutting knife in the corresponding anvil assembly 3, each signal line on the slip ring outer ring 102 is connected to the detection signal receiving end of the main control board. During the use of the electric endoscopic stapler, since the slip ring outer ring 102 and the slip ring inner ring 101 can rotate freely, there will be no interference between the signal connection lines on the slip ring outer ring 102 and the signal connection lines on the slip ring inner ring 101 during use, so that the signal connection lines connected to the anvil assembly 3 will not be wound or knotted, and the slip ring inner ring 101 does not rotate with the slip ring outer ring 102, and the signal connection lines on the slip ring inner ring 101 maintain a stable connection relationship with the main control board 2.

[0046] Furthermore, the driving housing 12 can be, but is not limited to, injection molded.

[0047] Furthermore, a driving module (an existing driving device) for controlling the operation of the anvil assembly 3 and a plurality of wiring ports correspondingly connected to the operation control ends of the cutting blades in the anvil assemblies 3 of multiple models are provided inside the rotating housing 10. The operation control ends of the cutting blades in the anvil assemblies 3 of different models are connected to the corresponding wiring ports through the driving module, and the corresponding signal connection lines on the outer ring 102 of the slip ring are then connected to the corresponding wiring ports. Thus, the signals of the anvil assemblies 3 of different models can be transmitted to the main control board 2 through the respective wiring ports, and further, the main control board 2 can control the moving distance of the cutting blades in the currently used anvil assembly 3.

[0048] In an alternative embodiment of the present invention, as Figure 1 、 Figure 2 shown, the driving housing 12 is a cylindrical structure with openings at both ends. The motor 4 is fixedly arranged inside the driving housing 12. The power supply end of the motor 4 is connected to the main control board 2 through a power transmission line. The power transmission line connected to the main control board 2 passes through one opening of the driving housing 12 and is connected to the power supply 6 located at the position of the handle of the manual and electric laparoscopic stapler. The output shaft of the motor 4 passes through the other opening of the driving housing 12 and is connected to one end of the lead screw 7. The other end of the lead screw 7 extends axially away from the motor 4 along the driving housing 12.

[0049] Furthermore, as Figure 1 、 Figure 2 shown, the translation nut 8 is a cylindrical structure with openings at both ends. An internal thread matching the external thread on the lead screw 7 is provided on the inner wall of the translation nut 8. The translation nut 8 and the lead screw 7 are connected by the cooperation of the internal thread and the external thread. A first translation slideway (not shown) penetrating the translation nut 8 axially is provided on the outer wall of the translation nut 8. A second translation slideway (not shown) penetrating the sleeve 9 axially is provided on the inner wall of the sleeve 9. The first translation slideway and the second translation slideway are in contact with each other. The first translation slideway and the second translation slideway cooperate with the sleeve 9 to form a rotation limiting structure, so as to play a circumferential limiting role on the translation nut 8 during the rotation of the lead screw 7, so that the translation nut 8 can only move axially along the sleeve 9.

[0050] Furthermore, as Figure 1 、 Figure 2As shown, the sleeve 9 is a cylindrical structure with openings at both ends. One end of the sleeve 9 extends into the interior of the drive housing 12 and is fixedly connected to the drive housing 12. The other end of the sleeve 9 is located outside the drive housing 12. The translation nut 8 can move along the axial direction of the sleeve 9, and the end of the translation nut 8 away from the motor 4 is connected to one end of the firing rod 11. The other end of the firing rod 11 is hinged to the cutting knife in the anvil assembly 3. When the motor 4 is in the starting state, the translation nut 8 can be driven to move by the lead screw 7, and then the cutting knife in the anvil assembly 3 can be driven to move to the affected area through the translation nut 8 and the firing rod 11, completing the cutting and suturing of the tissue.

[0051] In an alternative embodiment of the present invention, as Figure 2 , Figure 6 shown, the signal transmission structure for the electric endoscopic stapler further includes a sub-control board 5. The sub-control board 5 is fixedly arranged on the outer wall of the sleeve 9. A plurality of travel switches 501 are arranged at intervals along the axial direction of the drive housing 12 on the sub-control board 5. The control signal output end of the main control board 2 is respectively connected to the control ends of the travel switches 501. The contacts on each travel switch 501 pass through the side wall of the sleeve 9 and extend into the interior of the sleeve 9. In the initial state, the translation nut 8 is in a squeezing state for the contacts of each travel switch 501; when the anvil assembly 3 moves to the preset position, the translation nut 8 moves the same distance and releases the contact of the corresponding travel switch 501 (i.e., no longer squeezes the contact), so that the corresponding travel switch 501 is triggered to act after the anvil assembly 3 moves the preset distance, and the motor 4 stops operating. After receiving the trigger signal, the main control board 2 controls the motor 4 to rotate in the reverse direction so that the anvil assembly 3 can return to its original position after completing the cutting and suturing process.

[0052] Furthermore, as Figure 2 shown, a bearing 14 is arranged between one end of the lead screw 7 close to the motor 4 and the inner wall of the drive housing 12. Through the bearing 14, the lead screw 7 is stably connected to the interior of the drive housing 12 and can rotate freely.

[0053] Furthermore, as Figure 2 shown, a snap ring 15 is arranged between the lead screw 7 and the inner wall of the drive housing 12. Through the snap ring 15, the axial movement of the lead screw 7 during rotation can be avoided.

[0054] In an alternative embodiment of the present invention, as Figure 1 shown, the signal transmission structure for the electric endoscopic stapler further includes a power supply 6. The power supply end of the power supply 6 is connected to the power supply end of the motor 4 through the main control board 2 and the power transmission line. The power supply 6 can supply power to the main control board 2 and the motor 4, thus ensuring the normal operation of the main control board 2 and the motor 4.

[0055] Furthermore, asFigure 1 As shown, the power supply 6 can be but is not limited to a battery.

[0056] The working process of the signal transmission structure for the electric laparoscopic stapler of the present invention is as follows: The cutting knife in the anvil assembly 3 is hinged to the firing rod 11, and the action control end of the cutting knife in the anvil assembly 3 is connected to the main control board 2 through the signal connection line on the outer ring 102 of the slip ring of the slip ring 1. The main control board 2 recognizes the signals of the anvil assembly 3 at different strokes (these signals are transmitted through the slip ring 1); when the control button 16 is pressed, the main control board 2 controls the motor 4 to drive the lead screw 7 to rotate, thereby driving the translation nut 8 to move axially in the sleeve 9, and then driving the firing rod 11 to move. During the movement of the firing rod 11 and the cutting knife in the anvil assembly 3 hinged to it, the tissue is cut and sutured. When moving to a preset distance, the translation nut 8 is separated from the contact of the travel switch 501 at the corresponding position, and the contact of the travel switch 501 acts to disconnect the travel switch 501, then the motor 4 stops working. At this time, the cutting knife has completed the cutting and suturing work of the tissue; afterwards, the main control board 2 controls the motor 4 to rotate in the reverse direction to drive the cutting knife in the anvil assembly 3 to return to its original position.

[0057] The characteristics and advantages of the signal transmission structure for the electric laparoscopic stapler of the present invention are:

[0058] First, a slip ring 1 is added between the sleeve 9 and the rotating shell 10 in the signal transmission structure for the electric laparoscopic stapler. The slip ring 1 is respectively connected to the action control end of the cutting knife in the anvil assembly 3 and the main control board 2 through the signal connection lines on both sides of it. By setting the slip ring 1, the stability of signal transmission is improved, thereby avoiding the situation that the signal connection lines are entangled and knotted during the use of the device. It is convenient to use and simple to operate, ensuring the stable control of the main control board 2 over the anvil assembly 3 and the motor 4, and ensuring the long-term and stable working state of the electric laparoscopic stapler.

[0059] Second, for the signal transmission structure for the electric laparoscopic stapler, by replacing different slip rings 1, the number of signal connection lines on the slip ring 1 can be adjusted to ensure that the slip ring 1 can adapt to various models of anvil assemblies 3, improving the applicability of the product and avoiding complex modifications to the product structure to complete the rapid iteration and upgrade of the product.

[0060] III. The signal transmission structure for the electric laparoscopic stapler adds multiple travel switches 501 on the moving path of the translation nut 8 to trigger the corresponding travel switch 501 to act after the anvil assembly 3 moves a preset distance, thereby controlling the working state of the electric laparoscopic stapler. This achieves the effect that an electric laparoscopic stapler is applicable to anvil assemblies 3 with different strokes. While ensuring stability and safety, it is more convenient to operate, improves work efficiency, and ensures that patients can receive timely treatment.

[0061] Embodiment 2

[0062] As Figure 1 、 Figure 2 shown, the present invention provides an electric laparoscopic stapler, which includes a handle housing 13, anvil assemblies 3 of multiple models, and the above-mentioned signal transmission structure for the electric laparoscopic stapler. The signal transmission structure for the electric laparoscopic stapler is located inside the handle housing 13 and can be adaptively connected to anvil assemblies 3 of various models respectively.

[0063] Furthermore, as Figure 1 shown, the electric laparoscopic stapler further includes a rotating shell 10. The rotating shell 10 is rotatably connected to the handle housing 13, and a driving module for controlling the movement of the cutting knife in the anvil assembly 3 is provided inside the rotating shell 10.

[0064] Furthermore, as Figure 1 shown, the electric laparoscopic stapler further includes a control button 16. The control button 16 is arranged on the handle housing 13 and is connected to the control signal receiving end of the main control board 2.

[0065] Furthermore, the handle housing 13 and the rotating shell 10 can both be but are not limited to injection molding.

[0066] The characteristics and advantages of the electric laparoscopic stapler of the present invention are as follows:

[0067] I. The electric laparoscopic stapler can be adapted to anvil assemblies 3 of multiple models, having a wider scope of application. Moreover, during the operation of the present invention, the signal transmission line will not be entangled or knotted, ensuring the safety and stability of use.

[0068] II. The electric laparoscopic stapler can identify anvil assemblies 3 of different models and automatically control the moving distance of the cutting knife in anvil assemblies 3 of different models through the setting of multiple travel switches 501, reducing the operation difficulty of the electric laparoscopic stapler and greatly improving the automation and intelligence level of the electric laparoscopic stapler.

[0069] The above are only illustrative specific embodiments of the present invention and are not intended to limit the scope of the present invention. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A signal transmission structure for an electric laparoscopic stapler, characterized in that It includes a driving housing, in which a motor and a lead screw connected to the output shaft of the motor are arranged. A translation nut is sleeved outside the lead screw, and a sleeve is sleeved outside the translation nut. The sleeve is connected to the driving housing, and the sleeve circumferentially limits the rotation of the translation nut. The translation nut can be connected to a cutting knife in an anvil assembly of multiple models through a firing rod; A rotating housing covers the outside of the sleeve. A conductive slip ring is arranged between the outer wall of the sleeve and the inner wall of the rotating housing. The conductive slip ring is respectively connected to the action control end of the cutting knife in the anvil assembly and the main control board for controlling the working state of the motor through signal connecting lines on both sides thereof; A driving module for controlling the action of the anvil assembly and a plurality of wiring ports corresponding to the action control ends of the cutting knives in the anvil assemblies of multiple models are arranged inside the rotating housing. The action control ends of the cutting knives in the anvil assemblies of different models are connected to the corresponding wiring ports through the driving module. The corresponding signal connecting lines on the outer ring of the slip ring are then connected to the corresponding wiring ports, and the signals of the anvil assemblies of different models are transmitted to the main control board through each wiring port; The action state of the cutting knife in the anvil assembly is controlled by rotating the rotating housing.

2. The signal transmission structure for an electric endoscopic stapler according to claim 1, characterized in that The conductive slip ring includes a slip ring inner ring and a slip ring outer ring rotatably sleeved outside the slip ring inner ring. A plurality of connected signal connecting lines are respectively led out from the slip ring inner ring and the slip ring outer ring. The conductive slip ring is sleeved outside the sleeve, and the slip ring inner ring is connected to the outer wall of the sleeve. The control signal output end of the main control board is connected to the control end of the motor; The slip ring outer ring is connected to the action control end of the cutting knife in the corresponding anvil assembly through the signal connecting line, and the slip ring inner ring is connected to the detection signal receiving end of the main control board through the signal connecting line; or the slip ring inner ring is connected to the action control end of the cutting knife in the corresponding anvil assembly through the signal connecting line, and the slip ring outer ring is connected to the detection signal receiving end of the main control board through the signal connecting line.

3. The signal transmission structure for an electric laparoscopic stapler according to claim 1, characterized in that, The driving housing is a cylindrical structure with openings at both ends. The motor is located inside the driving housing. The power supply end of the motor is connected to the main control board through a power transmission line. The power transmission line connected to the main control board passes through one end of the driving housing and is connected to a power supply at the handle position. The output shaft of the motor passes through the other end of the driving housing and is connected to one end of the lead screw. The other end of the lead screw extends axially away from the motor along the driving housing.

4. The signal transmission structure for an electric laparoscopic stapler according to claim 3, characterized in that, The translation nut is a cylindrical structure with openings at both ends. An internal thread matching the lead screw is provided on the inner wall of the translation nut. The translation nut is threadedly connected to the lead screw. A first translation slideway penetrating the translation nut is axially provided on the outer wall of the translation nut along the axis of the translation nut. A second translation slideway penetrating the sleeve is axially provided on the inner wall of the sleeve along the axis of the sleeve. The first translation slideway is in fit with the second translation slideway.

5. The signal transmission structure for an electric laparoscopic stapler according to claim 4, characterized in that, The sleeve is a cylindrical structure with openings at both ends. One end of the sleeve extends into the interior of the driving housing and is fixedly connected to the driving housing. The other end of the sleeve is located outside the driving housing. The translation nut can move axially along the sleeve and is connected to one end of the firing rod. The other end of the firing rod is hinged to the cutting knife in the anvil assembly.

6. The signal transmission structure for an electric laparoscopic stapler according to claim 4, characterized in that, The signal transmission structure for the electric endoscopic stapler further includes a sub-control board. The sub-control board is arranged on the outer wall of the sleeve. A plurality of travel switches are axially spaced along the driving housing on the sub-control board. The control signal output end of the main control board is respectively connected to the control ends of each travel switch. The contacts on each travel switch pass through the side wall of the sleeve and extend into the interior of the sleeve, so as to trigger the corresponding travel switch to act after the translation nut moves a preset distance in the anvil assembly.

7. The signal transmission structure for an electric endoscopic stapler according to claim 4, wherein A bearing is provided between one end of the lead screw close to the motor and the inner wall of the driving housing, and a snap ring for preventing axial movement of the lead screw is provided between the lead screw and the inner wall of the driving housing.

8. An electric endoscopic stapler, characterized in that, The electric endoscopic stapler includes a handle housing, anvil assemblies of various models, and the signal transmission structure for the electric endoscopic stapler according to any one of claims 1 to 7. The signal transmission structure for the electric endoscopic stapler is located in the handle housing, and the signal transmission structure for the electric endoscopic stapler can be adaptively connected to the anvil assemblies of various models respectively.

9. The electric laparoscopic stapler according to claim 8, wherein, The electric endoscopic stapler further includes a rotating shell. The rotating shell is rotatably connected to the handle housing, and a driving module for controlling the movement of the cutting knife in the anvil assembly is arranged in the rotating shell.

10. The electric laparoscopic stapler according to claim 8, wherein, The electric endoscopic stapler further includes a control button. The control button is arranged on the handle housing, and the control button is connected to the control signal receiving end of the main control board.

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