Endoscope anastomat front end jaw steering mechanism

Abstract

The utility model discloses a front-end jaw steering mechanism of an endoscope anastomat, which comprises a nail bin seat, a right steering sheet and a left steering sheet which are rotationally connected with the nail bin seat, positioning pins arranged on the right steering sheet and the left steering sheet, steering gears positioned on the inner sides of the right steering sheet and the left steering sheet, and thread parts arranged on the steering gears, the gear carrier is located on the outer side of the steering gear, the small gear is connected with the gear carrier in a meshed mode, the small gear is connected with the steering gear in a meshed mode, and the rotary shifting wheel is connected with the gear carrier and can lock the gear carrier. The utility model has the beneficial effects that the structure form of gear combination is adopted, the front-end jaw is driven to steer left and right through the axial rotation of the rotary dial wheel, the degree of freedom of the steering angle is higher, the angle is locked through the front-back movement of the rotary dial wheel, the front-end jaw can steer left and right through one hand during operation, and the operation is more convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of endoscopic staplers, and particularly relates to a front jaw steering mechanism of an endoscopic stapler. Background Art

[0002] The existing front jaw steering mechanism of the same type of endoscopic stapler mainly realizes left and right steering by turning the dial button at the front end of the handle left and right, and there are positions when the rotation angles are 15°, 30°, and 45° for left and right steering, and more precise angle adjustment cannot be performed; when operating the instrument, one hand needs to hold the handle, and the other hand turns the dial button left and right to realize the left and right steering of the front jaw, and the steering operation cannot be performed by one hand alone. Content of the Utility Model

[0003] The purpose of the utility model is to provide a front jaw steering mechanism of an endoscopic stapler, which can perform left and right steering of the front jaw with one hand, and the operation is more convenient.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A front jaw steering mechanism of an endoscopic stapler, including a cartridge seat, a right steering piece and a left steering piece rotatably connected to the cartridge seat, positioning pins installed on the right steering piece and the left steering piece, a steering gear located inside the right steering piece and the left steering piece, a threaded portion provided on the steering gear, a gear frame located outside the steering gear, a small gear meshed with the gear frame and the small gear meshed with the steering gear, a rotary dial connected to the gear frame and capable of locking the gear frame. When the steering gear rotates clockwise or counterclockwise, the positioning pins move back and forth along with the threaded portion on the steering gear and drive the right steering piece and the left steering piece to move back and forth. When the left steering piece moves forward and the right steering piece moves backward, the connecting parts at the front ends of the right steering piece and the left steering piece and the cartridge seat rotate axially to realize the left and right swing of the front jaw of the endoscopic stapler.

[0005] Preferably, three small gears are provided and the three small gears are evenly distributed.

[0006] Preferably, it further includes a sleeve covering the right steering piece and the left steering piece, and the sleeve includes a first fixed ring portion and a second fixed ring portion spliced together.

[0007] Preferably, symmetrically distributed first notches are provided at the end of the first fixed ring portion, and symmetrically distributed second notches are provided at the end of the second fixed ring portion, and the first notches and the second notches are fitted together.

[0008] Preferably, it further includes fastening pieces located inside the first notches and the second notches, and fastening screws for fixing the fastening pieces.

[0009] Preferably, it further includes slots symmetrically formed at the end of the first fixed ring portion, and insertion blocks symmetrically arranged at the end of the second fixed ring portion, and the insertion blocks are adapted to the slots.

[0010] Preferably, the insertion block and the second fixed ring portion are of an integral structure, and the insertion block is arc-shaped.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] Adopting the structural form of a gear combination, the axial rotation of the rotating dial drives the left and right turning of the front jaw, and the degree of freedom of the turning angle is relatively high. The front and rear movement of the rotating dial is used for angle locking. When operating, the left and right turning of the front jaw can be carried out with one hand, and the operation is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the first perspective of the present utility model;

[0014] Figure 2 is a schematic structural diagram of the second perspective of the present utility model;

[0015] Figure 3 is of the present utility model Figure 2 the enlarged structural schematic diagram of area D in;

[0016] Figure 4 is a schematic structural diagram of the first perspective after the sleeve and the staple cartridge seat of the present utility model are removed;

[0017] Figure 5 is a schematic structural diagram of the second perspective after the sleeve and the staple cartridge seat of the present utility model are removed;

[0018] Figure 6 is a schematic partial cross-sectional view of the side view of the sleeve of the present utility model;

[0019] Figure 7 is of the present utility model Figure 6 the enlarged structural schematic diagram of area F in;

[0020] In the figure: 1. Staple cartridge seat; 2. Sleeve; 21. First fixed ring portion; 210. Slot; 211. First notch; 22. Second fixed ring portion; 220. Insertion block; 221. Second notch; 3. Rotating dial; 4. Right turning piece; 5. Left turning piece; 6. Steering gear; 61. Threaded portion; 7. Positioning pin; 8. Gear rack; 9. Pinion; 100. Fastening piece. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] Embodiment 1

[0023] Please refer to Figures 1 - 5 , which is the first embodiment of the present utility model. This embodiment provides a front jaw steering mechanism for a laparoscopic stapler, including a staple cartridge seat 1, a right steering piece 4 and a left steering piece 5 rotatably connected to the staple cartridge seat 1, which helps to realize the left and right swing of the front jaw of the laparoscopic stapler. A positioning pin 7 is installed on the right steering piece 4 and the left steering piece 5, realizing the addition of the positioning pin 7. A steering gear 6 is located inside the right steering piece 4 and the left steering piece 5, realizing the addition of the steering gear 6. A threaded portion 61 is provided on the steering gear 6, realizing the addition of the threaded portion 61. A gear frame 8 is located outside the steering gear 6, realizing the addition of the gear frame 8. Three small gears 9 meshed with the gear frame 8 and the three small gears 9 are meshed with the steering gear 6. A rotary dial 3 is connected to the gear frame 8 and can lock the gear frame 8. When the steering gear 6 rotates clockwise or counterclockwise, the positioning pin 7 moves back and forth along with the threaded portion 61 on the steering gear 6 and drives the right steering piece 4 and the left steering piece 5 to move back and forth at the same time. When the left steering piece 5 moves forward and the right steering piece 4 moves backward, the connection parts of the front ends of the right steering piece 4 and the left steering piece 5 with the staple cartridge seat 1 rotate axially, realizing the left and right swing of the front jaw of the laparoscopic stapler.

[0024] In this embodiment, preferably, it further includes a sleeve 2 covering the right steering piece 4 and the left steering piece 5, which increases the protection for the right steering piece 4 and the left steering piece 5 through the sleeve 2.

[0025] Embodiment 2

[0026] Please refer to Figures 1 - 7 , which is the second embodiment of the present utility model. This embodiment is based on the previous embodiment, and the difference is:

[0027] The sleeve 2 includes a first fixed ring portion 21 and a second fixed ring portion 22 that are spliced together. The first fixed ring portion 21 and the second fixed ring portion 22 can be disassembled and assembled, which increases the convenience of use. Symmetrically distributed first notches 211 are provided at the end of the first fixed ring portion 21, realizing the addition of the first notches 211. Symmetrically distributed second notches 221 are provided at the end of the second fixed ring portion 22, realizing the addition of the second notches 221. The first notches 211 and the second notches 221 are fitted together. A fastening piece 100 is added inside the first notches 211 and the second notches 221. With the cooperation of fastening screws, the spliced first fixed ring portion 21 and second fixed ring portion 22 are fixed.

[0028] It also includes slots 210 symmetrically provided at the end of the first fixed ring portion 21, realizing the opening of the slots 210, and plug blocks 220 symmetrically arranged at the end of the second fixed ring portion 22, realizing the addition of the plug blocks 220. And the plug blocks 220 are adapted to the slots 210. With the cooperation of the plug blocks 220 and the slots 210, the limitation during the splicing of the first fixed ring portion 21 and the second fixed ring portion 22 is increased.

[0029] The plug block 220 and the second fixed ring portion 22 are of an integral structure, which helps to increase the strength of the plug block 220 and the second fixed ring portion 22. The plug block 220 is arc-shaped.

[0030] The working principle and usage process of the present utility model: Pull the rotary dial 3 backward, and then drive the gear rack 8 to rotate by turning the rotary dial 3. When the gear rack 8 rotates, the three small gears 9 inside are driven to rotate simultaneously. The steering gear 6 also rotates through the rotation of the three small gears 9. The positioning pins 7 are fixed on the right steering piece 4 and the left steering piece 5. When the steering gear 6 rotates clockwise or counterclockwise, the positioning pins 7 move back and forth along with the threaded portion 61 on the steering gear 6 and drive the right steering piece 4 and the left steering piece 5 to move back and forth. When the left steering piece 5 moves forward and the right steering piece 4 moves backward, the connection parts between the front ends of the right steering piece 4 and the left steering piece 5 and the staple cartridge seat 1 rotate axially, realizing the left and right swing of the front-end jaws of the endoscopic stapler. After swinging to a suitable angle, push the rotary dial 3 forward to lock the angle.

[0031] Although the embodiments of the present utility model have been shown and described, see the above detailed description. For those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A front jaw steering mechanism of a laparoscopic stapler, characterized in that: The invention comprises a nail magazine seat (1), a right steering plate (4) and a left steering plate (5) rotatably connected to the nail magazine seat (1), a positioning pin (7) installed on the right steering plate (4) and the left steering plate (5), a steering gear (6) located inside the right steering plate (4) and the left steering plate (5), a threaded portion (61) arranged on the steering gear (6), a gear frame (8) located outside the steering gear (6), a pinion (9) meshingly connected to the gear frame (8), and the pinion (9) meshingly connected to the steering gear (6), and a rotating dial (3) connected to the gear frame (8) and capable of locking the gear frame (8).

2. The front jaw steering mechanism of a laparoscopic stapler according to claim 1, characterized in that: The number of pinion gears (9) is three, and the three pinion gears (9) are evenly distributed.

3. The front jaw steering mechanism of a laparoscopic stapler according to claim 1, characterized in that: It also includes a sleeve (2) that covers the right steering plate (4) and the left steering plate (5), and the sleeve (2) includes a first fixed ring part (21) and a second fixed ring part (22) that are spliced ​​together.

4. The front jaw steering mechanism of a laparoscopic stapler according to claim 3, characterized in that: The end of the first fixing ring part (21) is provided with symmetrically distributed first notches (211), and the end of the second fixing ring part (22) is provided with symmetrically distributed second notches (221), and the first notches (211) and the second notches (221) are fitted together.

5. The front jaw steering mechanism of a laparoscopic stapler according to claim 4, characterized in that: It also includes a fastening sheet (100) located inside the first notch (211) and the second notch (221), and a fastening screw for fixing the fastening sheet (100).

6. The front jaw steering mechanism of a laparoscopic stapler according to claim 3, characterized in that: It also includes a slot (210) symmetrically opened at the end of the first fixing ring part (21), and an insert block (220) symmetrically arranged at the end of the second fixing ring part (22), and the insert block (220) is adapted to the slot (210).

7. The front jaw steering mechanism of a laparoscopic stapler according to claim 6, characterized in that: The insert block (220) and the second fixing ring portion (22) are an integral structure, and the insert block (220) is arc-shaped.

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