A manual reset device for an adapter

Abstract

This utility model discloses a manual reset device for an adapter. The adapter is connected to the stapler main unit and the staple cartridge assembly. The adapter includes an adapter body and an adapter rotating shaft, one end of which is connected to a drive screw. The manual reset device includes a fixed part and a rotating part, the rotating part being rotatable relative to the fixed part. When the manual reset device is connected to the adapter, the fixed part is fixedly connected to the adapter body, and the rotating part is fixedly connected to the other end of the adapter rotating shaft. Rotating the rotating part drives the adapter rotating shaft to rotate, and the rotation of the adapter rotating shaft drives the staple cartridge assembly to open and close via the drive screw. This utility model's manual reset device effectively reduces the driving force required for manual reset, making the reset operation labor-saving, smooth, and highly efficient. It also simplifies the complex process of manual reset, reducing the workload of medical staff. Furthermore, its continuous rotation capability significantly shortens the adapter reset time, reduces surgical time, and lowers potential risks during the medical process.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to a manual reset device for an adapter. Background Technology

[0002] The modular laparoscopic stapler is a new type of medical device among medical staplers. The stapler includes a main unit and an adapter. The modular laparoscopic stapler can be used with disposable staple cartridges for the resection, transection and anastomosis of tissues in abdominal, obstetric, pediatric and thoracic surgery. It can also be used for the resection and transection of liver parenchyma, hepatic blood vessels and gallbladder duct.

[0003] The modular stapler consists of a main unit, an adapter, and a staple cartridge assembly. The main unit is the control unit of the instrument, the adapter is the drive transmission part of the main unit, and the staple cartridge assembly is mounted on the adapter. Operating the main unit allows for tissue suturing and cutting. Currently, most existing modular staplers require a manual reset device when the electric reset mechanism fails to function properly due to high reset forces. However, existing manual reset devices present several inconveniences in practice: firstly, manual reset requires significant force, undoubtedly increasing the difficulty for the surgeon; secondly, the operation of the manual reset device is cumbersome, requiring stopping and changing the hand position after every half-turn. Existing manual reset devices are not only inconvenient to operate, but the repeated operations are also inefficient and significantly increase surgical time. In the time-sensitive surgical environment, prolonged surgical time may expose the patient to higher risks, such as increased infection risk and prolonged anesthesia time. Utility Model Content

[0004] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0005] A manual reset device for an adapter is disclosed, wherein the adapter is connected to the stapler host and the staple cartridge assembly. The adapter includes an adapter body and an adapter rotating shaft, one end of which is connected to a drive screw. The manual reset device includes a fixed part and a rotating part, the rotating part being rotatable relative to the fixed part. When the manual reset device is connected to the adapter, the fixed part is fixedly connected to the adapter body, and the rotating part is fixedly connected to the other end of the adapter rotating shaft. Rotating the rotating part at this time can drive the adapter rotating shaft to rotate, and the rotation of the adapter rotating shaft drives the staple cartridge assembly to open and close via the drive screw.

[0006] Furthermore, the rotating part includes a drive part and a handheld operation part, and the fixed part includes a bracket that can be detachably connected to the adapter.

[0007] Furthermore, the main body of the adapter includes: a rotating head and an adapter connector; the rotating head and the adapter connector can rotate relative to each other, and the rotation of the rotating head can drive the nail box assembly to rotate; one end of the adapter connector is connected to the main unit and the other end is connected to the nail box assembly; the bracket is provided with a first fixing rib and a first fixing groove, and correspondingly, the rotating head of the adapter is provided with a second fixing groove and the adapter connector is provided with a second fixing rib, the first fixing rib cooperates with the second fixing groove, and the first fixing groove cooperates with the second fixing rib.

[0008] Furthermore, the bracket includes a fixing buckle, and correspondingly, the adapter is provided with a fixing slot. When the manual reset device is installed on the adapter, the fixing buckle and the fixing slot cooperate to prevent the bracket and the adapter from moving axially relative to each other.

[0009] Furthermore, the drive unit includes: a reset shaft and a reset shaft mounting base, with the reset shaft fixed on the reset shaft mounting base; the drive unit also includes a retaining ring, and the bracket includes a central hole, through which the reset shaft passes and is fixed by the retaining ring, so that the drive unit can only rotate axially relative to the bracket and cannot move axially.

[0010] Furthermore, the handheld operating part includes: a rocker arm and a rocker assembly. The rocker assembly includes a rocker mounting base, a rocker bushing, and a rocker. After the rocker bushing is fitted onto the outside of the rocker, the rocker is fixedly connected to the rocker mounting base. One end of the rocker arm is rotatably connected to the reset shaft mounting base, and the other end of the rocker arm is rotatably connected to the rocker mounting base.

[0011] Furthermore, the reset shaft fixing seat is provided with a rocker arm receiving area, the rocker arm can be located in the rocker arm receiving area and can rotate in the rocker arm receiving area, the rocker arm is provided with a rocker arm assembly receiving area, the rocker arm assembly can be located in the rocker arm assembly receiving area and can rotate in the rocker arm assembly receiving area.

[0012] Furthermore, the manual reset device includes an initial state and a working state. In the initial state, the rocker arm assembly is retracted into the rocker arm's waist rod assembly receiving area, and the rocker arm is retracted into the rocker arm receiving area of ​​the manual reset shaft fixing seat. In the working state, after the rocker arm rotates, it becomes parallel to the surface of the reset shaft fixing seat, and after the rocker arm assembly rotates, it becomes perpendicular to the surface of the reset shaft fixing seat.

[0013] Furthermore, the rocker arm is provided with a ball bearing hole, and the ball bearing is installed in the ball bearing hole. The rocker arm mounting base is provided with a positioning hole, and the ball bearing can press against the positioning hole to position the rocker arm assembly. There are two positioning holes. When the ball bearing presses against the two positioning holes of the rocker arm mounting base respectively, it corresponds to the initial state and the working state respectively.

[0014] Furthermore, the rotating part includes a first rocker arm fixing assembly and a second rocker arm fixing assembly. The first rocker arm fixing assembly includes a rocker arm buckle disposed on the rocker arm and a locking hole disposed on the reset shaft fixing seat. When the rocker arm is disposed in the rocker arm receiving position, the rocker arm is fixed by the rocker arm buckle and the locking hole. The second rocker arm fixing assembly includes a limiting groove disposed on the rocker arm and a limiting protrusion disposed on the reset shaft fixing seat. When the rocker arm rotates from the rocker arm receiving position to the working state, the limiting protrusion engages with the limiting groove to fix the rocker arm.

[0015] With this design, the present invention has at least the following advantages:

[0016] (1) When the combined stapler faces a large resetting resistance and cannot be reset by the electric function of the main unit, the manual resetting device of this utility model can effectively reduce the driving force required for manual resetting, making the resetting operation labor-saving, smooth and efficient, and can simplify the complex process of manual resetting, which can reduce the workload of medical staff.

[0017] (2) The manual reset device of this utility model has the ability to rotate continuously, which significantly shortens the reset time of the adapter, reduces the operation time, and reduces potential risks in the medical process.

[0018] (3) The foldable structure of this utility model can greatly reduce the space occupied by the manual reset device when it is not in use, making the storage and retrieval of the device extremely convenient.

[0019] (4) This utility model has a simple structure, good effect, low cost and easy process implementation. Attached Figure Description

[0020] The above is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model, the following describes this utility model in further detail with reference to the accompanying drawings and specific embodiments.

[0021] Figure 1 This is a schematic diagram of the overall structure of the manual reset device and adapter of this utility model;

[0022] Figure 2 This is a schematic diagram of the overall structure of the manual reset device of this utility model;

[0023] Figure 3 This is an exploded view of the manual reset device of this utility model;

[0024] Figure 4 This is a schematic diagram of the support structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the manual reset device and adapter working together according to this utility model;

[0026] Figure 6 This is a schematic diagram showing the fixing of the rotating part and the fixed part of this utility model;

[0027] Figure 7 This is a schematic diagram of the resetting shaft fixing seat structure of this utility model;

[0028] Figure 8 This is a schematic diagram of the rocker arm structure of this utility model;

[0029] Figure 9 This is a schematic cross-sectional view of the rocker arm assembly of this utility model;

[0030] Figure 10 This is a schematic diagram of the rocker arm assembly and its cooperation with the rocker arm of this utility model;

[0031] Figure 11 This is a schematic diagram showing the cooperation between the rocker arm and the reset shaft fixing seat of this utility model;

[0032] Figure 12 This is a schematic diagram of the initial state of the manual reset device of this utility model;

[0033] Figure 13 This is a schematic diagram of the working state of the manual reset device of this utility model.

[0034] The attached diagram shows the following reference numerals: 1. Bracket; 11. Fixing buckle; 12. First fixing rib; 13. First fixing groove; 2. Drive part; 21. Reset shaft; 22. Snap ring; 23. Reset shaft fixing seat; 24. Self-tapping screw; 231. Fifth through hole; 232. Snap hole; 3. Handheld operation part; 31. Rocker arm; 32. Rocker arm fixing seat; 33. Fixing seat pin; 34. Rocker arm bushing; 35. Rocker arm; 36. Rocker arm fixing pin; 37. Elastic ball; 38. Rocker arm pin; 311. Third through hole; 312. Elastic ball hole; 313. Rocker arm buckle; 314. Fourth through hole; 315. Limiting groove; 321. Rocker arm receiving hole; 322. First through hole; 323. Second through hole; 324. Positioning hole; 41. Adapter rotating shaft; 42. Rotating head; 43. Adapter connector. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] In this article, "up" and "down" are used only to indicate the relative positional relationship between related parts, rather than to define the absolute position of these related parts.

[0037] In each component described below, the end closer to the operator is defined as the distal end, and the end farther from the operator is defined as the proximal end. These terms "proximal end" and "distal end" are used only for simplicity and clarity and should not be construed as limiting the scope of this invention.

[0038] See appendix Figure 1-13 This application discloses a manual reset device for an adapter. The adapter is connected to the stapler host and the staple cartridge assembly. The adapter includes an adapter body and an adapter rotating shaft 41, one end of which is connected to a drive screw. The manual reset device includes a fixed part and a rotating part, the rotating part being rotatable relative to the fixed part. When the manual reset device is connected to the adapter, the fixed part is fixedly connected to the adapter body, and the rotating part is fixedly connected to the other end of the adapter rotating shaft 41. Rotating the rotating part at this time can drive the adapter rotating shaft 41 to rotate, and the rotation of the adapter rotating shaft 41 drives the staple cartridge assembly to open and close via the drive screw. The rotating part includes a drive part 2 and a handheld operation part 3; the fixed part includes a bracket 1, which can be detachably connected to the adapter. The adapter body includes a rotating head 42 and an adapter connector 43; the rotating head 42 and the adapter connector 43 are rotatable relative to each other, and the rotation of the rotating head 42 can drive the staple cartridge assembly to rotate. One end of the adapter connector 43 is connected to the host, and the other end is connected to the staple cartridge assembly.

[0039] The bracket 1 is provided with a first fixing rib 12 and a first fixing groove 13. Correspondingly, the rotating head 42 of the adapter is provided with a second fixing groove 421, and the adapter connector 43 is provided with a second fixing rib 431. The first fixing rib 12 cooperates with the second fixing groove 421, and the first fixing groove 13 cooperates with the second fixing rib 431. When the manual reset device is installed on the adapter, it prevents the bracket 1 from rotating relative to the adapter rotating head 42 and the adapter connector 43. Preferably, there are two first fixing ribs 12, two first fixing grooves 13, two second fixing grooves 421, and two second fixing ribs 431.

[0040] Furthermore, the bracket 1 includes a fixing buckle 11, and correspondingly, the adapter is provided with a fixing slot (not shown in the figure). When the manual reset device is installed on the adapter, the fixing buckle 11 and the fixing slot cooperate to prevent the bracket 1 and the adapter from moving axially relative to each other.

[0041] The drive unit 2 includes a reset shaft 21 and a reset shaft mounting base 23, with the reset shaft 21 fixed to the reset shaft mounting base 23. Preferably, the drive unit 2 includes self-tapping screws 24, which fasten the reset shaft 21 and the reset shaft mounting base 23 together. Further, the drive unit 2 also includes a retaining ring 22. The bracket 1 includes a central hole, through which the reset shaft 21 passes and is fixed by the retaining ring 22, so that the drive unit 2 can only rotate axially relative to the bracket 1 and cannot move axially.

[0042] The handheld operating part 3 includes a rocker arm 31 and a rocker assembly. The rocker assembly includes a rocker mounting base 32, a rocker bushing 34, and a rocker 35. After the rocker bushing 34 is fitted over the outside of the rocker 35, the rocker 35 is fixedly connected to the rocker mounting base 34. One end of the rocker arm 31 is rotatably connected to the reset shaft mounting base 23, and the other end of the rocker arm 31 is rotatably connected to the rocker mounting base 32.

[0043] The reset shaft fixing seat 23 is provided with a rocker arm receiving area. The rocker arm 31 can be located in the rocker arm receiving area and can rotate in the rocker arm receiving area. The rocker arm 31 is provided with a rocker arm assembly receiving area. The rocker arm assembly can be located in the rocker arm assembly receiving area and can rotate in the rocker arm assembly receiving area.

[0044] The rocker arm mounting base 32 is provided with a rocker arm receiving hole 321 and a first through hole 322. One end of the rocker arm 35 is provided with a rocker arm through hole. One end of the rocker arm 35 passes through the rocker arm receiving hole 321. The rocker arm fixing pin 36 passes through the first through hole 322 and the rocker arm through hole to fix the rocker arm 35 and the rocker arm mounting base 32.

[0045] The rocker arm fixing seat 32 is provided with a second through hole 323, and correspondingly, one end of the rocker arm 31 is provided with a third through hole 311. The rocker arm fixing seat pin 33 passes through the third through hole 311 and the second through hole 323 to rotatably connect the rocker arm fixing seat 32 and the rocker arm 31.

[0046] The other end of the rocker arm 31 is provided with a fourth through hole 314. Correspondingly, the reset shaft fixing seat 23 is provided with a fifth through hole 231. The rocker arm pin 38 passes through the fifth through hole 231 and the fourth through hole 314 to rotatably connect the rocker arm 31 to the reset shaft fixing seat 23.

[0047] The manual reset device includes an initial state and a working state. In the initial state, the rocker arm assembly is retracted into the rocker arm assembly receiving area of ​​the rocker arm 31, and the rocker arm 31 is retracted into the rocker arm receiving area of ​​the manual reset shaft fixing seat 23. In the working state, the rocker arm 31 rotates 180 degrees and becomes parallel to the surface of the reset shaft fixing seat 23, and the rocker arm assembly rotates 90 degrees and becomes perpendicular to the surface of the reset shaft fixing seat 23.

[0048] The rocker arm 31 has a ball bearing hole 312, and an elastic ball bearing 37 is installed in the ball bearing hole 312. The rocker arm mounting base 32 has a positioning hole 324. The elastic ball bearing 37 can abut against the positioning hole 324 to position the rocker arm assembly. There are two positioning holes 324. When the elastic ball bearing 37 abuts against the two positioning holes 324 of the rocker arm mounting base, it corresponds to the initial state and the working state of the rocker arm assembly, respectively. Preferably, the rocker arm 31 has two ball bearing holes 312 on both sides, and two elastic balls bearing 37 are located in the ball bearing holes 312. The rocker arm mounting base 32 has two positioning holes 324 on both sides.

[0049] Furthermore, the rotating part includes a first rocker arm fixing assembly, which includes a rocker arm buckle 313 disposed on the rocker arm and a locking hole 232 disposed on the reset shaft fixing seat 23. When the rocker arm 31 is disposed in the rocker arm receiving position, the rocker arm 31 is fixed by the rocker arm buckle 313 and the locking hole 232. The rotating part also includes a second rocker arm fixing assembly, which includes a limiting groove 315 disposed on the rocker arm and a limiting protrusion (not shown in the figure) disposed on the reset shaft fixing seat 23. When the rocker arm 31 is rotated 180 degrees from the rocker arm receiving position to the working state, the limiting protrusion engages with the limiting groove 315 to fix the rocker arm 31.

[0050] The installation process of the manual reset device is as follows: First, put the rocker arm bushing 34 onto the rocker arm 35. Install one end of the rocker arm 35 with the rocker arm bushing 34 on it into the rocker arm receiving hole 321 of the rocker arm fixing seat 32. Then, use the rocker arm fixing pin 36 to pass through the first through hole 322 and the rocker arm through hole of the rocker arm fixing seat 32 to fix the rocker arm 35 and the rocker arm fixing seat 32 together to form a rocker arm assembly. Install the rocker arm fixing seat 32 into the rocker arm 31. Use the rocker arm fixing seat pin 33 to pass through the third through hole 311 on the rocker arm 31 and the second through hole 323 on the rocker arm fixing seat 32 to fix the rocker arm assembly to the rocker arm, so that the rocker arm assembly can rotate within the rocker arm 31. Install the elastic ball 37 at the elastic ball hole 312 on the rocker arm 31 so that the elastic ball can press against the positioning hole 324 and position the rocker arm assembly; install the assembled rocker arm assembly on the reset shaft fixing seat 23, and use the rocker arm pin 38 to pass through the fifth through hole 231 of the reset shaft fixing seat 23 and the fourth through hole 314 of the rocker arm 31 so that the rocker arm 31 can rotate on the reset shaft fixing seat 23.

[0051] This invention's manual reset device has two states: an initial state and a working state. In the initial state, to save storage space, the rocker arm and rocker assembly are closed. In the working state, the manual reset device works with the adapter, unfolding the rocker arm and rocker assembly. By rotating the rocker assembly clockwise or counterclockwise, the drive unit rotates smoothly, and the rocker assembly has the ability to rotate continuously, thus significantly shortening the adapter's reset time and improving surgical efficiency. Furthermore, the length of the rocker arm and rocker arm can be appropriately extended to reduce the driving force required for manual reset, making the reset operation more effortless and smooth, greatly reducing the physical exertion of medical staff.

[0052] The foldable structure of this invention greatly reduces the space occupied by the manual reset device when not in use, making storage and folding extremely convenient. When the manual safety device works in conjunction with the adapter, the snap-fit ​​structure, as well as the fixing ribs and fixing grooves, achieve a stable connection and integrated assembly with the adapter, ensuring the accuracy and stability of operation, and facilitating installation and disassembly during use.

[0053] Those skilled in the art will readily conceive of other embodiments of the present invention upon considering the utility model disclosed in the specification and embodiments. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the claims.

[0054] It should be understood that this invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this invention is limited only by the appended claims.

Claims

1. A manual reset device for an adapter, wherein, The adapter connects to the stapler main unit and the staple cartridge assembly. The adapter includes an adapter body and an adapter rotating shaft, one end of which is connected to a drive screw. The manual reset device includes a fixed part and a rotating part, the rotating part of which can rotate relative to the fixed part. When the manual reset device is connected to the adapter, the fixed part is fixedly connected to the adapter body, and the rotating part is fixedly connected to the other end of the adapter rotating shaft. Rotating the rotating part at this time can drive the adapter rotating shaft to rotate, and the rotation of the adapter rotating shaft drives the staple cartridge assembly to open and close via the drive screw.

2. The manual reset device as described in claim 1, characterized in that, The rotating part includes a driving part and a handheld operating part, and the fixed part includes a bracket that can be detachably connected to the adapter.

3. The manual reset device as described in claim 2, characterized in that, The adapter body includes a rotating head and an adapter connector; the rotating head and the adapter connector can rotate relative to each other, and the rotation of the rotating head can drive the nail box assembly to rotate. One end of the adapter connector is connected to the main unit, and the other end is connected to the nail box assembly. The bracket is provided with a first fixing rib and a first fixing groove. Correspondingly, the rotating head of the adapter is provided with a second fixing groove, and the adapter connector is provided with a second fixing rib. The first fixing rib cooperates with the second fixing groove, and the first fixing groove cooperates with the second fixing rib.

4. The manual reset device as described in claim 2 or 3, wherein the bracket includes a fixing buckle, and correspondingly, the adapter is provided with a fixing slot. When the manual reset device is installed on the adapter, the fixing buckle and the fixing slot cooperate to prevent the bracket and the adapter from moving axially relative to each other.

5. The manual reset device as described in claim 2 or 3, characterized in that, The drive unit includes: a reset shaft and a reset shaft mounting base, with the reset shaft fixed on the reset shaft mounting base; the drive unit also includes a retaining ring, and the bracket includes a central hole, through which the reset shaft passes and is fixed by the retaining ring, so that the drive unit can only rotate axially relative to the bracket and cannot move axially.

6. The manual reset device as described in claim 5, characterized in that, The handheld operating part includes: a rocker arm and a rocker assembly. The rocker assembly includes a rocker mounting base, a rocker bushing, and a rocker. After the rocker bushing is fitted onto the outside of the rocker, the rocker is fixedly connected to the rocker mounting base. One end of the rocker arm is rotatably connected to the reset shaft mounting base, and the other end of the rocker arm is rotatably connected to the rocker mounting base.

7. The manual reset device as described in claim 6, characterized in that, The reset shaft fixing seat is provided with a rocker arm receiving area, in which the rocker arm can be located and rotate. The rocker arm is provided with a rocker arm assembly receiving area, in which the rocker arm assembly can be located and rotate.

8. The manual reset device as described in claim 6 or 7, characterized in that, The manual reset device includes an initial state and a working state. In the initial state, the rocker arm assembly is retracted into the rocker arm's waist rod assembly housing, and the rocker arm is retracted into the rocker arm housing of the manual reset shaft fixing seat. In the working state, the rocker arm rotates to be parallel to the surface of the reset shaft fixing seat, and the rocker arm assembly rotates to be perpendicular to the surface of the reset shaft fixing seat.

9. The manual reset device as described in claim 8, characterized in that, The rocker arm is provided with a ball bearing hole, and the ball bearing is installed in the ball bearing hole. The rocker arm mounting base is provided with a positioning hole, and the ball bearing can press against the positioning hole to position the rocker arm assembly. There are two positioning holes. When the ball bearing presses against the two positioning holes of the rocker arm mounting base, it corresponds to the initial state and the working state respectively.

10. The manual reset device as described in claim 6, characterized in that, The rotating part includes a first rocker arm fixing assembly and a second rocker arm fixing assembly. The first rocker arm fixing assembly includes a rocker arm buckle disposed on the rocker arm and a locking hole disposed on the reset shaft fixing seat. When the rocker arm is disposed in the rocker arm receiving position, the rocker arm is fixed by the rocker arm buckle and the locking hole. The second rocker arm fixing assembly includes a limiting groove disposed on the rocker arm and a limiting protrusion disposed on the reset shaft fixing seat. When the rocker arm rotates from the rocker arm receiving position to the working state, the limiting protrusion engages with the limiting groove to fix the rocker arm.

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