Endoscopic linear cutting stapler electric drive assembly

Abstract

The application discloses a kind of endoscope linear cutting anastomat electric drive components, it is related to anastomat technical field.The present application includes installation body, the inner wall of installation body is rotatably connected with rotary cylinder, the end of rotary cylinder is hinged with head shaking, the end surface of head shaking is hinged with nail bin module by pivot, the tail of nail bin module is provided with connecting portion, the end surface of head shaking is fixedly installed with nail tongs, the circumferential surface of pivot is fixedly installed with corner bevel gear, the inside of installation body is provided with universal transmission module, the circumferential surface of universal transmission module is drivingly connected with corner bevel gear, the inner wall of rotary cylinder is installed with angle adjusting module.The present application is designed by corner bevel gear, push nail plate, universal ball etc., so that the present device can efficiently complete the electric driving operation when anastomat cutting operation is carried out, and when driving operation is carried out, by the design of corner bevel gear and angle adjusting module, it is convenient to quickly change the cutting angle of cutting mechanism in anastomat during anastomat operation.

Description

Technical Field

[0001] This invention belongs to the field of anastomosis device technology, and in particular relates to an electric drive assembly for a laparoscopic linear cutting anastomosis device. Background Technology

[0002] Surgical staplers are devices used in surgery to replace manual sutures. They work by using titanium or stainless steel staples to separate or anastomose tissue, similar to a stapler. Compared to traditional manual sutures, instrumental suturing has the following advantages: The suturing is quick, the operation is simple, and it saves surgical time. Single-use only to avoid cross-infection; Using titanium or stainless steel nails, the stitching is tight and appropriately loose; Currently, there are two main types of laparoscopic staplers on the market: manually operated and electrically operated. Manually operated laparoscopic staplers are mainly operated by opening and closing the handle to achieve anastomosis and cutting. Opening the jaws requires pulling back the handle or closing it tightly. Manual operation places high demands on the surgeon's grip strength, arm strength, and stability of force application. Electrically operated laparoscopic staplers use electricity as their energy source, which is converted into mechanical energy by a motor to drive the rack to move back and forth. Existing electrically operated staplers are not convenient for turning the cutting head during use, and the firing mechanism in existing electrically operated staplers is not convenient for changing the firing angle in accordance with the turning of the cutting head, thus making firing operations inconvenient. Summary of the Invention

[0003] The purpose of this invention is to provide an electric drive assembly for a laparoscopic linear cutting stapler. Through the design of structures such as a steering shaft, elastic sleeve, and universal ball bearings, it solves the problems in existing electric drive assemblies for laparoscopic linear cutting staplers where the firing mechanism is not convenient for changing the firing angle with the rotation of the cutting head and is not convenient for turning the cutting head.

[0004] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to an electrically driven assembly for a laparoscopic linear cutting anastomosis device, comprising a mounting body. A rotating cylinder is rotatably connected to the inner wall of the mounting body. A rocker arm is hinged to the end of the rotating cylinder. A staple cartridge module is hinged to the end face of the rocker arm via a rotating shaft. A connecting portion is provided at the tail of the staple cartridge module. A staple clamp is fixedly mounted on the end face of the rocker arm. A bevel gear is fixedly mounted on the circumferential side of the rotating shaft. A universal drive module is disposed inside the mounting body, and the circumferential side of the universal drive module is connected to the bevel gear. An angle adjustment module is mounted on the inner wall of the rotating cylinder, and the surface of the angle adjustment module is connected to the rocker arm. Next, a firing module is installed inside the mounting body. A firing cylinder is drivenly connected to the peripheral side of the firing module. The peripheral side of the firing cylinder is slidably connected to the mounting body. A pusher plate that cooperates with the firing cylinder is slidably connected to the inner wall of the cylinder. A push rod is fixedly installed on one surface of the pusher plate. An elastic sleeve is slidably connected to the peripheral side of the push rod. A set of universal balls that fit together sequentially are arranged inside the elastic sleeve. A top ball that fits with the universal balls is fixedly installed at one end of the push rod. The inner wall of the connecting part is slidably connected to the elastic sleeve. A retaining ring is fixedly installed at one end of the elastic sleeve.

[0005] Preferably, the universal drive module includes a main shaft, a rocker shaft, a steering shaft, a main worm gear, and a first drive motor. The peripheral side of the first drive motor is fixedly connected to the mounting body. The peripheral sides of the main shaft and the main worm gear are rotatably connected to the mounting body. The peripheral sides of the steering shaft and the rocker shaft are rotatably connected to the rocker shaft. The output shaft end of the first drive motor is fixedly connected to the main worm gear. The peripheral side of the main worm gear is drively connected to the main shaft. A coupling is fixedly installed at one end of the main shaft. One surface of the coupling is fixedly connected to the rocker shaft. The peripheral side of the rocker shaft is drively connected to the steering shaft via a belt. A transmission bevel gear that meshes with the angle bevel gear is fixedly installed on the peripheral side of the steering shaft.

[0006] Preferably, a drive gear that cooperates with the main worm gear is fixedly installed on the circumferential side of the main shaft.

[0007] Preferably, the coupling includes a first hinge joint and a second hinge joint, the inner wall of the first hinge joint is hinged to the second hinge joint, the surface of the first hinge joint is fixedly connected to the main shaft, and the surface of the second hinge joint is fixedly connected to the rocker shaft.

[0008] Preferably, the firing cylinder is sleeved on the outside of the main shaft, the firing cylinder is a hollow cylindrical structure with openings at both ends, the elastic sleeve is made of elastic rubber, and the push rod is made of metal.

[0009] Preferably, the angle adjustment module includes a second drive motor, a secondary worm gear, and a gear ring. The peripheral side of the second drive motor is fixedly connected to the rotating cylinder. An angle adjustment shaft is fixedly installed on the output shaft end of the second drive motor. The peripheral sides of the secondary worm gear and the angle adjustment shaft are rotatably connected to the rotating cylinder. The bottom surface of the gear ring is fixedly connected to the oscillating cylinder. The peripheral side of the secondary worm gear is driven to the angle adjustment shaft via a belt. The peripheral side of the secondary worm gear is driven to the gear ring.

[0010] Preferably, a storage battery is fixedly installed inside the mounting body, a control panel is installed on the surface of the mounting body, and a set of actuating paddles arranged in a circular array are fixedly installed on the circumferential side of the rotating cylinder.

[0011] Preferably, the firing module includes a third transmission motor and a transmission screw. The peripheral side of the third transmission motor is fixedly connected to the mounting body, the peripheral side of the transmission screw is rotatably connected to the mounting body, the output shaft end of the third transmission motor is drivenly connected to the transmission screw, and the peripheral side of the transmission screw is drivenly connected to the firing cylinder.

[0012] Preferably, a driven bevel gear is fixedly installed on the peripheral side of the transmission screw, and a driving bevel gear is fixedly installed on the output shaft end of the third transmission motor.

[0013] Preferably, the connecting part has a through hole that mates with the elastic sleeve, the nail cartridge module has a firing hole that is coaxially arranged with the through hole, and the top surface of the sway head is equipped with two symmetrically arranged steering guide rollers that mate with the elastic sleeve.

[0014] The present invention has the following beneficial effects: This invention, through the design of a bevel gear, push plate, and universal ball bearings, enables the device to efficiently complete the electrically driven operation of the stapler during cutting. Furthermore, the bevel gear and angle adjustment module design facilitates rapid changes in the cutting angle of the stapler's cutting mechanism during operation. The multiple shaft components allow for multi-directional angle changes of the cutting mechanism electrically. The combined design of the universal ball bearings, elastic sleeve, and top column ensures that the angle of the firing mechanism and the head-shaking angle change synchronously during stapler use. This synchronized change function facilitates efficient electrically firing of the stapler.

[0015] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic cross-sectional view of an electrically driven assembly for a laparoscopic linear anastomosis device. Figure 2 for Figure 1 A magnified schematic diagram of the local structure at point A; Figure 3 for Figure 1 A magnified view of the structure at point B in the middle; Figure 4 This is a schematic diagram of the third transmission motor, the second transmission motor, and the transmission lead screw. Figure 5 for Figure 4 A magnified schematic diagram of the local structure at point C; Figure 6 for Figure 4 A magnified schematic diagram of the local structure at point D; Figure 7 This is a schematic diagram of the oscillating and rotating cylinder structures; Figure 8 for Figure 7 A magnified schematic diagram of the local structure at point E; Figure 9 This is a schematic diagram of the cross-sectional structure of the elastic sleeve when it is bent.

[0018] The attached diagram lists the components represented by each number as follows: 1. Mounting body; 2. Rotating cylinder; 3. Shaking head; 4. Rotating shaft; 5. Nail cartridge module; 6. Connecting part; 7. Nail clamp; 8. Angle bevel gear; 9. Firing cylinder; 10. Nail pusher plate; 11. Push rod; 12. Elastic sleeve; 13. Universal ball bearing; 14. Top ball; 15. Retaining ring; 16. Main shaft; 17. Rocker shaft; 18. Steering shaft; 19. Main worm gear; 20. First transmission motor; 21. Coupling; 22. Transmission bevel gear; 23. Second transmission motor; 24. Secondary worm gear; 25. Gear ring; 26. Angle adjusting shaft; 27. Third transmission motor; 28. Transmission lead screw; 29. ​​Steering guide roller; 30. Battery; 31. Actuating plate. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1-9 The present invention is an electric drive assembly for a laparoscopic linear cutting anastomosis device, including a mounting body 1, a rotating cylinder 2 rotatably connected to the inner wall of the mounting body 1, and a set of actuating plates 31 arranged in a circular array fixedly mounted on the circumferential side of the rotating cylinder 2. The actuating plates 31 are configured to change the main placement angle and placement direction of the staple cartridge module 5 and the staple clamp 7. The end of the rotating cylinder 2 is hinged with a swing 3, and the end face of the swing 3 is hinged with a staple cartridge module 5 via a rotating shaft 4. The tail of the staple cartridge module 5 is provided with a connecting part 6. The end face of the sway bar 3 is fixedly installed with a nail clamp 7, the circumferential side of the rotating shaft 4 is fixedly installed with a bevel gear 8, and the interior of the mounting body 1 is provided with a universal transmission module, the circumferential side of the universal transmission module is connected to the bevel gear 8 for transmission. The function of the universal drive module is to change the angle between the staple clamp 7 and the staple cartridge module 5. The universal drive module includes a main shaft 16, a rocker shaft 17, a steering shaft 18, a main worm gear 19, and a first drive motor 20. The peripheral side of the first drive motor 20 is fixedly connected to the mounting body 1. The peripheral side of the main shaft 16 and the main worm gear 19 are rotatably connected to the mounting body 1. The peripheral side of the steering shaft 18 and the rocker shaft 17 are rotatably connected to the yaw 3. The output shaft end of the first drive motor 20 is fixedly connected to the main worm gear 19. The peripheral side of the main worm gear 19 is drively connected to the main shaft 16. A drive gear that mates with the main worm gear 19 is fixedly mounted on the peripheral side of the main shaft 16. A coupling 21 is fixedly installed at one end of the main shaft 16. One surface of the coupling 21 is fixedly connected to the rocker shaft 17. The circumferential side of the rocker shaft 17 is connected to the steering shaft 18 via a belt. A transmission bevel gear 22 that cooperates with the corner bevel gear 8 is fixedly installed on the circumferential side of the steering shaft 18. The coupling 21 includes a first hinge joint and a second hinge joint. The inner wall of the first hinge joint is hinged to the second hinge joint. The surface of the first hinge joint is fixedly connected to the main shaft 16. The surface of the second hinge joint is fixedly connected to the rocker shaft 17. An angle adjustment module is installed on the inner wall of the rotating cylinder 2. The surface of the angle adjustment module is connected to the oscillating 3. The function of the angle adjustment module is to change the angle between the oscillating 3 and the rotating cylinder 2. The angle adjustment module includes a second drive motor 23, a secondary worm gear 24, and a gear ring 25. The peripheral side of the second drive motor 23 is fixedly connected to the rotating cylinder 2. An angle adjustment shaft 26 is fixedly installed on the output shaft end of the second drive motor 23. The peripheral side of the secondary worm gear 24 and the angle adjustment shaft 26 are rotatably connected to the rotating cylinder 2. The bottom surface of the gear ring 25 is fixedly connected to the oscillating head 3. The peripheral side of the secondary worm gear 24 is connected to the angle adjustment shaft 26 via a belt. The peripheral side of the secondary worm gear 24 is connected to the gear ring 25 via a belt. The firing module is installed inside the mounting body 1. The firing module is connected to the firing cylinder 9 via a transmission connection. The firing cylinder 9 is slidably connected to the mounting body 1. The firing cylinder 9 is sleeved on the outside of the main shaft 16. The firing cylinder 9 is a hollow cylindrical structure with openings at both ends. The inner wall of the rotating cylinder 2 is slidably connected to a pusher plate 10 that cooperates with the firing cylinder 9. A pusher rod 11 is fixedly installed on one surface of the pusher plate 10. The pusher rod 11 is made of metal. An elastic sleeve 12 is slidably connected to the periphery of the pusher rod 11. The elastic sleeve 12 is made of elastic rubber. A set of universal balls 13 are arranged in sequence inside the elastic sleeve 12. A top ball 14 that is in contact with the universal balls 13 is fixedly installed at one end of the pusher rod 11. The inner wall of the connecting part 6 is slidably connected to the elastic sleeve 12. A through hole that cooperates with the elastic sleeve 12 is fixedly opened inside the connecting part 6. A retaining ring 15 is fixedly installed at one end of the elastic sleeve 12. The retaining ring 15 is set to prevent the elastic sleeve 12 from coming out of the connecting part 6. A firing hole that is coaxially arranged with the through hole is fixedly opened inside the nail magazine module 5. Two symmetrically arranged steering guide rollers 29 that cooperate with the elastic sleeve 12 are installed on the top surface of the sway 3. A battery 30 is fixedly installed inside the mounting body 1. A control panel is installed on the surface of the mounting body 1. A knob for driving the first drive motor 20, the second drive motor 23 and the third drive motor 27 is fixedly installed on the surface of the control panel.

[0021] The firing module includes a third drive motor 27 and a drive screw 28. The peripheral side of the third drive motor 27 is fixedly connected to the mounting body 1, and the peripheral side of the drive screw 28 is rotatably connected to the mounting body 1. The output shaft end of the third drive motor 27 is connected to the drive screw 28, and the peripheral side of the drive screw 28 is connected to the firing cylinder 9.

[0022] Among them, a driven bevel gear is fixedly installed on the peripheral side of the transmission screw 28, and a driving bevel gear is fixedly installed on the output shaft end of the third transmission motor 27.

[0023] This device is mainly suitable for the electric drive operation of a linear cutting stapler. During use, the angle between the staple clamp 7 and the staple cartridge module 5 can be effectively controlled by the universal transmission module. By rotating the rotating cylinder 2, the main arrangement angle between the staple clamp 7 and the staple cartridge module 5 can be effectively changed. By controlling the angle adjustment module, the angle between the swing head 3 and the rotating cylinder 2 can be controlled. When the angle between the swing head 3 and the rotating cylinder 2 changes, the angle of the elastic sleeve 12 changes accordingly. When it is necessary to fire the staple cartridge module 5, the transmission screw 28 works. After the transmission screw 28 works, it drives the push rod 11 to move. After the push rod 11 moves, it pushes out the elastic sleeve 12. During the ejection process, due to the design inside the elastic sleeve 12, the angle of the elastic sleeve 12 can be effectively limited and maintained. After the elastic sleeve 12 is ejected, it enters the staple cartridge module 5 through the firing hole. After the elastic sleeve 12 enters the staple cartridge module 5, it fires the cutting blade of the staple cartridge module 5.

[0024] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0025] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An electrically driven assembly for a laparoscopic linear cutting stapler, comprising a mounting body (1), characterized in that: The inner wall of the mounting body (1) is rotatably connected to a rotating cylinder (2). A head-shaking device (3) is hinged to the end of the rotating cylinder (2). The end face of the head-shaking device (3) is hinged to a staple cartridge module (5) via a rotating shaft (4). A connecting part (6) is provided at the tail of the staple cartridge module (5). A staple clamp (7) is fixedly installed on the end face of the head-shaking device (3). A bevel gear (8) is fixedly installed on the circumferential side of the rotating shaft (4). A universal drive module is provided inside the mounting body (1). The circumferential side of the universal drive module is connected to the bevel gear (8). An angle adjustment module is installed on the inner wall of the rotating cylinder (2). The surface of the angle adjustment module is connected to the head-shaking device (3). A firing module is installed inside the mounting body (1). The module is connected to a firing cylinder (9) via a transmission connection. The firing cylinder (9) is slidably connected to the mounting body (1). The inner wall of the rotating cylinder (2) is slidably connected to a pusher plate (10) that cooperates with the firing cylinder (9). A pusher rod (11) is fixedly installed on one surface of the pusher plate (10). An elastic sleeve (12) is slidably connected to the outer side of the pusher rod (11). A set of universal balls (13) are arranged inside the elastic sleeve (12) in sequence. A top ball (14) that is in contact with the universal balls (13) is fixedly installed at one end of the pusher rod (11). The inner wall of the connecting part (6) is slidably connected to the elastic sleeve (12). A retaining ring (15) is fixedly installed at one end of the elastic sleeve (12). The angle adjustment module includes a second drive motor (23), a secondary worm gear (24), and a gear ring (25). The peripheral side of the second drive motor (23) is fixedly connected to the rotating cylinder (2). An angle adjustment shaft (26) is fixedly installed on the output shaft end of the second drive motor (23). The peripheral side of the secondary worm gear (24) and the angle adjustment shaft (26) are rotatably connected to the rotating cylinder (2). The bottom surface of the gear ring (25) is fixedly connected to the oscillating head (3). The peripheral side of the secondary worm gear (24) is connected to the angle adjustment shaft (26) via a belt. The peripheral side of the secondary worm gear (24) is connected to the gear ring (25). The connecting part (6) has a through hole that cooperates with the elastic sleeve (12) inside. The nail cartridge module (5) has a firing hole that is coaxially arranged with the through hole inside. The top surface of the head-shaking (3) is equipped with two symmetrically arranged steering guide rollers (29) that cooperate with the elastic sleeve (12).

2. The electrically driven assembly of a laparoscopic linear cutting anastomosis device according to claim 1, characterized in that, The universal drive module includes a main shaft (16), a rocker shaft (17), a steering shaft (18), a main worm gear (19), and a first drive motor (20). The peripheral side of the first drive motor (20) is fixedly connected to the mounting body (1). The peripheral side of the main shaft (16) and the main worm gear (19) are rotatably connected to the mounting body (1). The peripheral side of the steering shaft (18) and the rocker shaft (17) are rotatably connected to the sway bar (3). The output shaft end of the first drive motor (20) is fixedly connected to the main worm gear (19). The peripheral side of the main worm gear (19) is drive-connected to the main shaft (16). A coupling (21) is fixedly installed at one end of the main shaft (16). One surface of the coupling (21) is fixedly connected to the rocker shaft (17). The peripheral side of the rocker shaft (17) is drive-connected to the steering shaft (18) via a belt. A drive bevel gear (22) that cooperates with the angle bevel gear (8) is fixedly installed on the peripheral side of the steering shaft (18).

3. The electrically driven assembly of a laparoscopic linear cutting anastomosis device according to claim 2, characterized in that, The main shaft (16) has a drive gear fixedly mounted on its circumferential side, which cooperates with the main worm (19).

4. The electrically driven assembly of a laparoscopic linear cutting anastomosis device according to claim 2, characterized in that, The coupling (21) includes a first hinge joint and a second hinge joint. The inner wall of the first hinge joint is hinged to the second hinge joint. The surface of the first hinge joint is fixedly connected to the main shaft (16). The surface of the second hinge joint is fixedly connected to the rocker shaft (17).

5. The electrically driven assembly of a laparoscopic linear anastomosis device according to claim 1, characterized in that, The firing barrel (9) is sleeved on the outside of the main shaft (16). The firing barrel (9) is a hollow cylindrical structure with openings at both ends. The elastic sleeve (12) is made of elastic rubber, and the push rod (11) is made of metal.

6. The electrically driven assembly of a laparoscopic linear cutting stapler according to claim 1, characterized in that, A storage battery (30) is fixedly installed inside the mounting body (1), a control panel is installed on the surface of the mounting body (1), and a set of toggle pieces (31) arranged in a circular array are fixedly installed on the circumferential side of the rotating cylinder (2).

7. The electrically driven assembly of a laparoscopic linear cutting anastomosis device according to claim 1, characterized in that, The firing module includes a third transmission motor (27) and a transmission screw (28). The peripheral side of the third transmission motor (27) is fixedly connected to the mounting body (1), and the peripheral side of the transmission screw (28) is rotatably connected to the mounting body (1). The output shaft end of the third transmission motor (27) is connected to the transmission screw (28) in a transmission connection, and the peripheral side of the transmission screw (28) is connected to the firing cylinder (9) in a transmission connection.

8. The electrically driven assembly of a laparoscopic linear cutting stapler according to claim 7, characterized in that, A driven bevel gear is fixedly installed on the circumferential side of the transmission screw (28), and a driving bevel gear is fixedly installed on the output shaft end of the third transmission motor (27).

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