CN204016392U - A kind of titanium folder - Google Patents

Abstract

The utility model discloses a titanium clip, which comprises a clamping device and a release device. The clamping device includes a clamping arm, a small steel sleeve, a plastic transmission shaft and a plastic positioning sleeve; the front end of the plastic positioning sleeve and the rear end of the small steel sleeve The butt joint is fixed, the middle part of the plastic positioning sleeve protrudes outwards to form an undercut, and the position of the plastic positioning sleeve corresponding to the undercut forms a cavity; a plastic transmission shaft is pierced in the plastic positioning sleeve, and the front end of the plastic transmission shaft is installed and clamped Arm, the inner wall of the front end of the large steel sleeve is provided with a limiting cavity suitable for the shape and size of the undercut. The pull shaft can be moved back and forth in the large steel sleeve. The bit hole is connected with the plastic transmission shaft. On the one hand, the utility model effectively solves the problem that the clamping device and the release device are not easy to separate; on the other hand, it reduces the manufacturing cost; and on the other hand, it prevents the problem that the clamping arm is easy to loosen after clamping the tissue.

Description

a titanium clip

technical field

The utility model belongs to medical device products, in particular to a clamp for ligation of biological tissues.

Background technique

In medical operations, the clips used to clamp tissue were originally silver clips, and silver clips are gradually being replaced by titanium clips. The titanium clip is composed of two parts: a clamping device and a release device. During the operation, the clamping device clamps the tissue and is separated from the release device, but there are the following problems:

1) The clamping device and the release device are not easy to separate;

2) The structure is complex and the production cost is high;

3) The clamping arm is easy to loosen after clamping the tissue.

Therefore, those skilled in the art are devoting themselves to developing a titanium clip in which the clamping device and the releasing device are easily separated.

Utility model content

In view of the above-mentioned defects of the prior art, the technical problem to be solved by the utility model is to provide a titanium clip with which the clamping device and the releasing device are easily separated.

In order to achieve the above purpose, the utility model provides a titanium clip, including a clamping device and a release device, the clamping device includes a clamping arm, a small steel sleeve, a plastic transmission shaft and a plastic positioning sleeve;

The front end of the plastic positioning sleeve is docked and fixed with the rear end of the small steel sleeve, the middle part of the plastic positioning sleeve protrudes outwards to form an undercut, and the position of the plastic positioning sleeve corresponding to the undercut forms a cavity;

The plastic transmission shaft is pierced in the plastic positioning sleeve. The front end of the plastic transmission shaft is equipped with a clamping arm. A guide opening is opened forward on the rear end surface, and the guide opening communicates with the pulling hole;

The release device includes a pull shaft and a large steel sleeve. The inner wall of the front end of the large steel sleeve is provided with a limit cavity that is suitable for the shape and size of the undercut. The pull shaft can be moved back and forth in the large steel sleeve. The pull ring is connected with the plastic transmission shaft through the pull hole.

Using the above technical scheme, manually push the pull shaft forward, so that the pull ring set at the front end of the pull shaft protrudes out of the inner cavity of the large steel sleeve, and at this time the pull ring can enter the pull hole at the rear end of the plastic transmission shaft through the guide opening , so that the clamping device and the release device are connected together.

Then press the undercut and at the same time move the clamping device to the cavity in the large steel sleeve, so that the undercut enters the limiting cavity. At this time, the outer wall of the rear end of the plastic transmission shaft cooperates with the inner wall of the large steel sleeve to limit the guide The opening is opened, so when the pull shaft is pulled backward, the pull ring will not fall off from the pull hole, continue to pull the pull shaft backward, when the clamping arm moves to the port position at the front end of the small steel sleeve, due to the small Restriction of the front port of the steel sleeve, thereby closing the clamping arm.

After the clamping arm is closed, use this state to send the titanium clip into the endoscopic forceps channel, then push the pull shaft forward to open the clamping arm, and pull the clamping arm backward after the opened clamping arm moves to the human tissue. axis, the clamping arm clamps the human tissue while closing.

After the clamping arm clamps the human tissue, continue to pull the pull shaft backward until the clamp arm is pulled into the inner hole of the positioning sleeve, and then slowly rotate the pull shaft to break the necking section in the middle of the pull shaft, thereby The clamping device and the release device are rotated and disconnected.

In order to avoid frictional damage to the small steel sleeve, the small steel sleeve in the utility model is made of stainless steel.

In order to prevent the titanium clamp from loosening automatically after clamping the tissue, the outer wall of the clamping arm is integrally formed with barbs.

In order to prevent rotation, the cross-section of the outer wall of the plastic positioning sleeve is elliptical, and the cross-section of the inner wall is also elliptical.

In order to prevent rotation, the cross section of the outer wall of the large steel sleeve is circular, and the cross section of the inner wall is oval.

In order to prevent rotation, the outer contour of the front section of the plastic transmission shaft is elliptical. In order to better achieve the breaking effect, the cross section of the necking section in the middle of the plastic transmission shaft decreases gradually from front to back. The outer contour of the rear section of the plastic transmission shaft is round.

The beneficial effects of the utility model are:

1) Effectively solve the problem that the clamping device and the release device are not easy to separate;

2) Reduced manufacturing cost;

3) The problem that the clamp arm is easy to loosen after clamping the tissue is prevented.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is A-A sectional view of Fig. 1;

Fig. 3 is a schematic diagram of the connection between the clamping device and the release device through a pull ring and a pull hole;

Fig. 4 is a schematic diagram of the clamping device entering the inner cavity of the large steel sleeve;

Fig. 5 is a structural schematic diagram of sending the titanium clip into the human body;

Fig. 6 is a structural schematic diagram of the opening of the clamping arm;

Fig. 7 is a schematic diagram after clamping human tissue;

Fig. 8 is a schematic view of the fracture of the clamping device and the releasing device.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

As shown in FIGS. 1-8 , a titanium clip includes two parts: a clamping device 20 and a releasing device 30 . Wherein, the clamping device 20 includes a clamping arm 1 with barbs 14 , a small steel sleeve 2 , a plastic transmission shaft 5 and a plastic positioning sleeve 8 . The cross section of the outer wall of the plastic positioning sleeve 8 is oval, and the cross section of the inner wall is also oval. The front end of the plastic positioning sleeve 8 is docked and fixed with the rear end of the small steel sleeve 2, and the middle part of the plastic positioning sleeve 8 protrudes outwards to form two mutually symmetrical undercuts 8a. The corresponding undercuts 8a in the plastic positioning sleeve 8 form a Avoid cavity 8b. The plastic transmission shaft 5 is installed in the plastic positioning sleeve 8, the outer contour of the front section of the plastic transmission shaft 5 is elliptical, the middle part of the plastic transmission shaft 5 has a necking section 5a, and the cross section of the necking section 5a decreases gradually from front to back, The outer contour of the rear section of the plastic drive shaft 5 is circular. The clamping arm 1 is installed on the front end of the plastic transmission shaft 5, the rear end of the plastic transmission shaft 5 is provided with a pull hole 5b, and the rear end surface of the plastic transmission shaft 5 is provided with a guide opening 5c forward, and the guide opening 5c is connected to the pull hole 5b. The bit hole 5b is connected.

The release device 30 includes a pulling shaft 10 and a large steel sleeve 12, the cross section of the outer wall of the large steel sleeve 12 is circular, and the cross section of the inner wall is elliptical. The inner wall of the front end of the large steel sleeve 12 is provided with a limit cavity 12a that is suitable for the shape and size of the undercut 8a, and the pull shaft 10 can be moved back and forth in the large steel sleeve 12, and the front end of the pull shaft 10 is provided with a pull ring 9 , the pull ring 9 can be connected with the plastic transmission shaft 5 through the pull hole 5b.

The working principle of the utility model is as follows:

As shown in Figure 3, first push the pull shaft 10 forward until the pull ring 9 set at the front end of the pull shaft 10 protrudes out of the inner cavity of the large steel sleeve 12, at this time the pull ring 9 can enter the plastic transmission through the guide opening 5c The pull hole 5b at the rear end of the shaft 5, so that the clamping device 20 and the releasing device 30 are connected together.

Then push the clamping device 20 to the cavity in the large steel sleeve 12, and press the two undercuts 8a at the same time, so that the undercuts 8a enter the limiting cavity 12a from the front end port of the large steel sleeve 12. At this time, the plastic transmission The outer wall of the rear section of the shaft 5 cooperates with the inner wall of the large steel sleeve 12 to limit the opening of the guide opening 5c. Therefore, when the pull shaft 10 is pulled backward, the pull ring 9 will not fall off from the pull hole 5b. When the clamping arm 1 moves to the port position at the front end of the small steel sleeve 2, continue to pull the pulling shaft 10, so that the plastic transmission shaft 5 continues to move backward, and due to the restriction of the port at the front end of the small steel sleeve 2, the clamping arm 1 is closed ;As shown in Figure 4.

After the clamping arm 1 is closed, use this state to send the titanium clamp into the endoscopic forceps channel, then push the pulling shaft 10 forward to open the clamping arm 1, and then move the clamping arm 1 to the human tissue, at this time Pull the pull shaft 10 again, when the clamping arm 1 moves to the port position at the front end of the small steel sleeve 2, due to the restriction of the front end port of the small steel sleeve 2, the clamping arm 1 slowly closes, and simultaneously begins to clamp the human tissue, as As shown in Figure 5-6.

After the clamping arm 1 clamps the human body tissue, the pulling shaft 10 will continue to be pulled backward until the barb 14 on the clamping arm 1 is pulled into the inner hole of the plastic positioning sleeve 8. At this time, the large steel sleeve 12 is used to After the inner ellipse of the plastic positioning sleeve 8 and the plastic transmission shaft 5 are positioned and stopped, slowly rotate the pull shaft 10, so that the minimum part of the cross section of the plastic transmission shaft 5 necking section 5a is broken, so as to achieve the rotation and separation of the clamping device 20 and the effect of the release device 30. As shown in Figure 8.

After the clamping arm 1 is pulled into the inner hole of the positioning sleeve 8, the barb 14 of the clamping arm 1 utilizes the inner wall of the positioning sleeve 8 to fix the titanium clamp, so that the titanium clamp is not easy to loosen automatically after clamping the tissue.

The preferred specific embodiments of the present utility model have been described in detail above. It should be understood that those skilled in the art can make many modifications and changes according to the concept of the utility model without creative efforts. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the scope of protection defined by the claims .

Claims (6)

1. A titanium clamp, comprising a clamping device (20) and a release device (30), is characterized in that: the clamping device (20) comprises a clamping arm (1), a small steel sleeve (2), a plastic transmission Shaft (5) and plastic positioning sleeve (8); The front end of the plastic positioning sleeve (8) is docked and fixed with the rear end of the small steel sleeve (2), and the middle part of the plastic positioning sleeve (8) protrudes outward to form an undercut (8a). A cavity (8b) is formed at a position corresponding to the undercut (8a); A plastic transmission shaft (5) is installed in the plastic positioning sleeve (8), the front end of the plastic transmission shaft (5) is equipped with a clamping arm (1), and the middle part of the plastic transmission shaft (5) is provided with a necking section (5a ), the rear end of the plastic transmission shaft (5) is provided with a pull hole (5b), and a guide opening (5c) is opened forward on the rear end face of the plastic transmission shaft (5), the guide opening (5c) and the pull position The holes (5b) are connected; The release device (30) includes a pull shaft (10) and a large steel sleeve (12), and the inner wall of the front end of the large steel sleeve (12) is provided with a limiting cavity adapted to the shape and size of the undercut (8a) (12a), the pull shaft (10) can be moved back and forth through the large steel sleeve (12), the front end of the pull shaft (10) is provided with a pull ring (9), and the pull ring (9) passes through The pulling hole (5b) is connected with the plastic transmission shaft (5). 2. The titanium clip according to claim 1, characterized in that: the small steel sleeve (2) is made of stainless steel. 3. The titanium clamp according to claim 1 or 2, characterized in that: the outer wall of the clamping arm (1) is integrally formed with barbs (14). 4. The titanium clip according to claim 1, characterized in that: the cross section of the outer wall of the plastic positioning sleeve (8) is elliptical, and the cross section of the inner wall is also elliptical. 5. The titanium clip according to claim 1 or 4, characterized in that: the cross-section of the outer wall of the large steel sleeve (12) is circular, and the cross-section of the inner wall is elliptical. 6. The titanium clip according to claim 1, characterized in that: the outer contour of the front section of the plastic transmission shaft (5) is elliptical, and the cross section of the necking section (5a) in the middle of the plastic transmission shaft (5) is from front to back After gradually reducing, the outer contour of the plastic drive shaft (5) rear section is circular.