Steering assembly in anastomat instrument

Abstract

The utility model relates to the technical field of anastomats, in particular to a steering assembly in an anastomat instrument, which comprises a self-locking adjusting unit, the self-locking adjusting unit is connected with the lower part of a joint steering shaft through a steering shifting block, and in a normal state, the self-locking adjusting unit is in a self-locking state to limit steering rotation of a joint; the self-locking adjusting unit is unlocked by pressing the joint steering shaft, and when the self-locking adjusting unit is in the unlocking state, the joint steering shaft is loosened after the joint steering shaft rotates by a certain angle, and then the self-locking adjusting unit is restored to be in the self-locking state. Steering self-locking is achieved through the self-locking adjusting unit, meanwhile, precision after steering operation is guaranteed, stability in the using process is further guaranteed, steering force is even, and abrasion is small.

Description

Technical Field

[0001] This utility model relates to the field of anastomosis device technology, and in particular to a steering component in anastomosis device. Background Technology

[0002] Anastomosing devices are medical devices used to replace traditional manual suturing. Due to advancements in modern technology and improved manufacturing techniques, the anastomosis components of anastomosing devices are often designed to be rotatable to enhance their flexibility. A knob mechanism controls the rotation of the anastomosis components. Typically, gears are incorporated into the knob mechanism to adjust the rotation amplitude through meshing. However, this design suffers from insufficient rotational precision, poor maneuverability, and instability. Furthermore, current designs utilize a lever that pulls a steering gear, which in turn disengages a steering retaining rod, unlocking the retaining seat for the staple cartridge assembly. The gear's protrusion then presses against the retaining seat to achieve steering. This design suffers from slippage, easy wear and breakage of steering components, and inconsistent steering effort. Utility Model Content

[0003] The present invention aims to solve the above-mentioned defects and provide a steering component in a stapler device.

[0004] In order to overcome the defects in the background art, the technical solution adopted by the present invention to solve its technical problem is: a steering component in a stapler device, including a joint steering shaft, with a driving gear constructed in its lower part, the driving gear meshing with a driven gear constructed on the transmission gear part;

[0005] The sway head tie rod has one end connected to the transmission gear section and the other end rotatably connected to the steering unit, which drives the steering unit to rotate through the sway head tie rod.

[0006] The self-locking adjustment unit is connected to the lower part of the joint steering shaft via a steering lever. In the normal state, the self-locking adjustment unit is in a self-locking state to restrict the joint steering rotation. Pressing the joint steering shaft unlocks the self-locking adjustment unit. After the joint steering shaft rotates a certain angle in the unlocked state, releasing the joint steering shaft restores the self-locking adjustment unit to the self-locking state.

[0007] Further improvements include the self-locking adjustment unit comprising a gear plate and a gear block. The upper part of the gear plate is connected to the lower part of the joint steering shaft via a steering paddle. The gear block is matched with a mating hole axially opened on the gear plate. A gear piece provided on the end of the gear block matches a toothed groove opened on the gear plate, so that when the gear block moves axially along the mating hole, the gear piece is embedded in the toothed groove. A wave spring is sleeved on the gear block.

[0008] Further improvements include having two transmission gear sections, which are arranged opposite to each other.

[0009] The beneficial effects of this utility model are: this design achieves steering self-locking through a self-locking adjustment unit while ensuring the accuracy after steering operation, thereby ensuring stability during use, uniform steering force, and low wear. It eliminates the connection method between the steering gear and the steering fixing rod on the steering unit in the original design, and solves the problem of easy wear and breakage of steering parts. Attached Figure Description

[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0011] Figure 1 This is the front view of this utility model;

[0012] Figure 2 It is the axial side of this utility model Figure 1 ;

[0013] Figure 3 yes Figure 2 Enlarged view of A in the middle;

[0014] Figure 4 It is the axial side of this utility model Figure 2 ;

[0015] Figure 5 yes Figure 4 Enlarged view of B in the middle;

[0016] Figure 6 This is an exploded view of the joint steering shaft and steering paddle in this utility model;

[0017] Figure 7 This is an exploded view of the gear shift plate and steering paddle of this utility model;

[0018] Figure 8 This is an assembly drawing of the gear shift plate and gear shift block in this utility model;

[0019] In the diagram, 1-joint steering shaft, 2-transmission gear section, 3-gear block, 4-steering paddle, 5-gear plate, 6-wave spring, 7-swing tie rod, 8-steering unit;

[0020] 101-Drive gear;

[0021] 201-Driven tooth;

[0022] 301-Gear Plate;

[0023] 501 - mating hole, 502 - toothed groove. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art without creative effort in accordance with the embodiments of the basic utility model are within the scope of protection of this utility model.

[0025] according to Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Figure 5 As shown, a steering component in a stapler device is disposed inside the stapler, including a joint steering shaft 1, with a drive gear 101 constructed at its lower part. The drive gear 101 meshes with a driven gear 201 constructed on the transmission gear part 2. Rotating the joint steering shaft 1 drives the transmission gear part 2 to move linearly through gear transmission.

[0026] The swing head lever 7 has one end connected to the transmission gear part 2 and the other end rotatably connected to the steering unit 8. The movement of the transmission gear part 2 drives the steering unit 8 to rotate through the swing head lever 7, and the staple cartridge assembly installed on the steering unit 8 will then swing left and right.

[0027] The self-locking adjustment unit is connected to the lower part of the joint steering shaft 1 via the steering lever 4. In the normal state, the self-locking adjustment unit is in a self-locking state to restrict the joint steering rotation. Pressing the joint steering shaft 1 unlocks the self-locking adjustment unit. After the joint steering shaft 1 rotates a certain angle in the unlocked state, the self-locking adjustment unit returns to the self-locking state after releasing the joint steering shaft 1.

[0028] In this embodiment, according to Figure 6 , Figure 7 and Figure 8 As shown, the self-locking adjustment unit includes a gear plate 5 and a gear block 3 disposed in the anastomosis device. The upper part of the gear plate 5 is connected to the lower part of the joint steering shaft 1 through a steering block 4. The gear block 3 is matched with the axially opened docking hole 501 on the gear plate 5. The gear piece 301 disposed on the end of the gear block 3 matches the toothed groove 502 opened on the gear plate 5, so that when the gear block 3 moves axially along the docking hole 501, the gear piece 301 is embedded in the toothed groove 502. A wave spring 6 is sleeved on the gear block 3 to push the gear plate 5 so that the gear piece 301 is kept engaged in the toothed groove 502.

[0029] In this embodiment, there are two transmission gear sections 2, which are distributed opposite to each other.

[0030] Working principle: First, when the joint steering shaft 1 is pressed, the steering shift block 4 drives the gear plate 5 to move down. At this time, the gear plate 301 disengages from the toothed groove 502, and the joint steering shaft 1 can achieve stepless steering. When the joint steering shaft 1 rotates, it drives the transmission gear part 2 to move linearly through gear transmission, so that the steering unit 8 rotates, causing the staple cartridge assembly to swing left and right. After the steering is in place, the joint steering shaft 1 is released. Under the elastic force of the wave spring 6, the joint steering shaft 1 will spring up. At this time, the gear plate 301 re-embeds into the toothed groove 502 for steering locking. Specifically, the gears mesh with each other to lock. The outer edge of the gear plate 301 has several teeth, which can achieve fine adjustment of the steering angle and adjust the swing angle of the staple cartridge assembly.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A steering assembly in a stapler device, characterized in that, It includes a joint steering shaft (1), the lower part of which is constructed with a drive gear (101), which meshes with a driven gear (201) constructed on the transmission gear section (2); The swing head tie rod (7) has one end connected to the transmission gear part (2) and the other end rotatably connected to the steering unit (8). The swing head tie rod (7) drives the steering unit (8) to rotate. The self-locking adjustment unit is connected to the lower part of the joint steering shaft (1) via the steering paddle (4). In normal state, the self-locking adjustment unit is in a self-locking state to restrict the joint steering rotation. Pressing the joint steering shaft (1) unlocks the self-locking adjustment unit. After the joint steering shaft (1) rotates a certain angle in the unlocked state, the self-locking adjustment unit returns to the self-locking state after releasing the joint steering shaft (1).

2. The steering assembly in a stapler device as described in claim 1, characterized in that: The self-locking adjustment unit includes a gear plate (5) and a gear block (3). The upper part of the gear plate (5) is connected to the lower part of the joint steering shaft (1) through a steering block (4). The gear block (3) is matched with the axially opened docking hole (501) on the gear plate (5). The gear piece (301) provided on the end of the gear block (3) matches the toothed groove (502) opened on the gear plate (5), so that when the gear block (3) moves axially along the docking hole (501), the gear piece (301) is embedded in the toothed groove (502). A wave spring (6) is sleeved on the gear block (3).

3. The steering assembly in a stapler device as described in claim 1, characterized in that: There are two transmission gear sections (2), and the transmission gear sections (2) are distributed opposite to each other.

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