CN115281775A - A clip applier pliers head that can be matched with a variety of ligation clips - Google Patents

Abstract

The invention relates to a clip applying forceps head capable of being matched with a plurality of ligation clips, which comprises forceps arms and a fixed block; the forceps arms comprise clamping parts at the front ends and connecting parts at the rear ends; a connecting hole is arranged at the position of the connecting part close to the clamping part; at least two sliding grooves are arranged behind the connecting hole; cylindrical bosses are respectively arranged on two side walls of the fixed block; the two forceps arms are arranged oppositely up and down, and connecting holes of the forceps arms are respectively sleeved on different bosses; an applying connecting rod is arranged in the tube body; the two applying connecting rods are straight rod-shaped, the front ends of the applying connecting rods are provided with a plurality of positioning holes, and the rear ends of the applying connecting rods are connected with a firing mechanism of the applying clamp; the applying connecting rod is clamped at the outer side of the clamp arm connecting part; the positioning holes correspond to the sliding grooves and are arranged in different positioning holes and different sliding grooves through positioning screws or pins. The opening angle of the clamp head can be easily adjusted by changing the positions of the positioning hole and the sliding groove, so that the clamp requirements of multiple ligation clamps with different sizes can be met.

Description

A clamp applicator head that can be used with various ligation clips

technical field

The invention relates to a medical device, in particular to a clip applier for clamping ligation clips, in particular to a clip applier head which can be matched with a variety of ligation clips.

Background technique

Clip applier is a commonly used medical device, which is usually used in surgical operations. It is used in conjunction with ligation clips to clamp blood vessels and play a role in hemostasis. Due to the different diameters of blood vessels in different places, in order to achieve the ideal hemostatic effect, different types of ligation clips need to be clamped according to the diameter of the blood vessels. Ligation clips are generally divided into large, medium and small sizes. Different types of ligation clips need to be matched with corresponding clip appliers. Therefore, in the operation, it is necessary to prepare multiple types of ligation clips, and multiple types of clip appliers matched with different types of ligation clips. As a result, the number of medical devices to be used in the operation will increase, thereby increasing the workload of medical staff and increasing the risk of using the wrong medical device.

Therefore, it needs to be improved so as to better meet the market demand.

Contents of the invention

The purpose of the present invention is to address the deficiencies in the prior art, to provide a clip applicator jaw that can be used with various types of ligature clips, and can be applied to a variety of ligature clips of different sizes without changing the clip applier. Clip operation can greatly reduce the number of surgical instruments, reduce the workload of medical staff, and reduce medical risks.

Technical scheme of the present invention is:

A clamp applicator head that can be matched with various ligation clips is provided at the front end of the tube body of the clip applier, and clamps the ligation clip by opening and closing, including a clamp arm and a fixing block;

The pliers arm includes a clamping portion at the front end and a connecting portion at the rear end; the connecting portion is provided with a connecting hole near the clamping portion; at least two chutes are provided behind the connecting hole; the chute is a long groove shape, inclined from outside to inside;

The two side walls of the fixed block are respectively provided with cylindrical bosses;

There are two clamp arms, which are set up and down opposite each other, and the connecting holes are respectively sleeved on different bosses, so that the clamping parts are scissor-shaped;

The pipe body is provided with an applying link; the applying link is two, both of which are straight rods, and its front end is provided with a plurality of positioning holes, and its rear end is connected with the firing mechanism of the clip applier; the applying link is clamped Connected to the outside of the clamp arm; the positioning hole corresponds to the chute, and is installed in different positioning holes and chute through positioning screws or pins, so that when the connecting rod moves back and forth It can drive the pliers arms to open to different maximum angles.

Further, there are three sliding grooves and positioning holes, and the maximum opening angles corresponding to the arms of the forceps are 27°, 15° and 6° respectively, which are suitable for clamping large ligation clips, medium ligation clips and small ligation clips. No. ligature clips.

Further, the length of the chute and the inclination angle have the following relationship: a/2=arcos(L1/L3)-b; wherein, a is the maximum angle at which the tong arm is opened, and L1 is the stroke of the connecting rod , L3 is the length of the chute, b is the inclination angle of the chute.

Further, the two sides of the front end of the pipe body are respectively provided with through installation holes; the installation holes correspond to the bosses; the bosses are provided with screw holes; the fixing blocks are placed on the pipe body Inside, and the clamp head is fixed on the pipe body through connecting screws installed on the mounting holes and the screw holes.

Further, the pipe body on the rear side of the installation hole is provided with an adjustment hole through the inside and outside; the adjustment hole is in the shape of a waist-shaped hole, corresponding to the chute.

Further, a limiting groove is provided on the inner side wall of the tube body; the applying link is placed in the limiting groove.

Further, the fixed block is hollow, and its front and rear ends are open; the front end of the fixed block corresponds to the clamping part, and its rear end corresponds to the ligation clip magazine in the tube body; the ligation Multiple ligation clips are arranged in the clip magazine.

Further, a guide groove is provided inside the clamping part; the width of the guide groove is adapted to the ligation clip.

Beneficial effects of the present invention:

The invention is reasonable in design and easy to use. By changing the position of the positioning hole and the chute, the opening angle of the clamp head can be easily adjusted to meet the clamping requirements of various ligation clamps of different sizes, thereby greatly reducing the number of instruments in the operation. The number reduces the workload of medical staff, and at the same time, it can avoid the use of wrong equipment and reduce medical risks.

Description of drawings

Figure 1 is an exploded view of the structure of the present invention.

Fig. 2 is a schematic perspective view of the present invention.

Fig. 3 is a front view of the present invention in a closed state.

FIG. 4 is a schematic diagram of A-A of FIG. 3 .

Fig. 5 is a schematic diagram of the opening state of the clamp head when corresponding to a large ligation clip.

Fig. 6 is a schematic diagram of the opening state of the clamp head corresponding to the medium-sized ligation clip.

Fig. 7 is a schematic diagram of the opening state of the clamp head corresponding to the small ligation clip.

Fig. 8 is a schematic diagram of the structure when applied to the continuous clamping forceps.

Among them, 1-clamp arm; 11-clamping part; 12-connecting part; 13-connecting hole; 14-chute; 2-fixing block; 21-boss; 3-tube body; Mounting hole; 33-limiting groove; 4-applying connecting rod; 41-locating hole; 5-ligating clip; 6-connecting screw; 7-locating screw; 8-ligating clip magazine.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

As shown in Figures 1 to 8.

A clip applier jaw that can be matched with various ligation clips is provided at the front end of the tube body 3 of the clip applier, and clamps the ligation clips by opening and closing.

The pliers head includes a pliers arm 1 and a fixed block 2 . The pliers arm 1 includes a clamping portion 11 at the front end and a connecting portion 12 at the rear end. The front end here refers to the end farther away from the pipe body, and the rear end refers to the end closer to the pipe body. The connecting portion 11 is provided with a connecting hole 13 adjacent to the clamping portion. Cylindrical bosses 21 are respectively provided on the two side walls of the fixing block 2 . There are two pliers arms 1 arranged opposite to each other up and down. The connecting holes 13 on the pliers arm 1 are respectively sleeved on the bosses 21 on different sides of the fixed block 2 , and can rotate along the bosses 21 . As a result, the two pliers arms 1 intersect each other, making the clamping portion in the shape of scissors, which can be opened and closed.

Three sliding grooves 14 are arranged on the connecting portion 11 behind the connecting hole 13 . The chute 14 is in the shape of a through long groove, inclined from outside to inside. At the same time, the tube body 3 is provided with an applying connecting rod 4 . There are two applying connecting rods 4, both of which are in the shape of straight rods. Three positioning holes 41 are provided at the front end, and the rear end is connected with the firing mechanism of the clip applicator. The applying link 4 is clamped on the outside of the pliers arm 14, and the positioning hole 41 is corresponding to the chute 14, and can be installed in different positioning holes and chute through the positioning screw 7, Match each locating hole to a chute. When the connecting rod moves back and forth, the relative movement of the positioning screw and the chute can drive the pliers arm to rotate around the boss, so that the clamping part of the pliers arm can be opened to different positions. maximum angle. The positioning screw can also be a pin, so as to meet different usage requirements.

The length and inclination angle of the chute 14 satisfy the following relationship: a/2=arcos(L1/L3)-b. Among them, a is the maximum angle of opening of the clamp arm, L1 is the stroke of the connecting rod, L3 is the length of the chute, and b is the inclination angle of the chute. Specifically, the positioning hole and the chute at the front end correspond to a maximum opening angle of 27° of the clamp arm, which is suitable for clamping large ligation clips. The maximum opening angle of the clamp arm corresponding to the positioning hole in the middle and the chute is 15°, which is suitable for the medium-sized ligation clip of the clamp. The maximum opening angle of the clamp arm corresponding to the third positioning hole and the chute is 6°, which is suitable for clamping small ligation clips. During production, the values of L3 and b can be adjusted according to the specific size of the connection part.

Both sides of the front end of the tube body 3 are respectively provided with through mounting holes 32 . The mounting hole 32 corresponds to the boss 21, and a screw hole is provided on the boss 21, so that the fixing block 2 can be placed inside the tube body 3, and connected by the connecting screw 6 The screw holes installed in the mounting hole 32 and the boss fix the pliers on the pipe body.

Further, an adjustment hole 31 penetrating inside and outside is provided on the pipe body at the rear side of the installation hole 32 . The adjustment hole 31 is in the shape of a waist hole, and its position corresponds to the chute. When the pliers arm is closed, each chute can be seen through the adjustment hole, so that tools such as a screwdriver can be used during operation. After passing through the adjustment hole, install or disassemble the positioning screw, so that the opening of the clamp arm can be adjusted, which greatly facilitates the use.

Further, a limiting groove is provided on the inner side wall of the tube body 3, and the applying connecting rod can be placed in the limiting groove, so as to ensure accurate movement of the clamping connecting rod.

The present invention can also be applied to continuous clip appliers. At this time, the fixed block 2 is hollow, its front and rear ends are open, and its front end corresponds to the clamping portion of the pliers arm, and its rear end is correspondingly provided with the ligation clip magazine 8 in the tube body. The ligation clip magazine 8 is provided with a plurality of ligation clips 5, which can push the ligation clips in the ligation clip magazine to move forward through the firing linkage structure of the clip applier after each clip application, and pass through the fixed block. Enter the clamping part of the pliers arm to achieve bursts.

Further, guide grooves are provided inside the clamping portion. The width of the guide groove is adapted to the ligation clip, so as to facilitate the movement of the ligation clip.

For other structures and working principles of the tube body, applying link, and clip applier involved in the present invention, please refer to the Chinese patent "Semi-automatic medical continuous clip applier with biological clip", application number 201610437045.4, and will not be repeated here .

The present invention easily adjusts the maximum opening angle of the forceps head by changing the position of the positioning hole and the chute, and meets the clamping requirements of various ligation clamps of different sizes, thereby greatly reducing the number of instruments in the operation and reducing the number of medical and nursing personnel. At the same time, it can also avoid the situation of using the wrong equipment, which effectively reduces the medical risk.

The parts not involved in the present invention are the same as the prior art or can be realized by adopting the prior art.

Claims (8)

1. A clip applying forceps head which can be matched with a plurality of types of ligation clips is arranged at the front end of a tube body of the clip applying forceps and clamps the ligation clips by opening and closing, and is characterized by comprising a forceps arm and a fixed block;

the forceps arms comprise clamping parts at the front ends and connecting parts at the rear ends; a connecting hole is formed in the position, close to the clamping part, of the connecting part; at least two sliding grooves are arranged behind the connecting hole; the sliding chute is in a long chute shape and inclines from outside to inside;

cylindrical bosses are respectively arranged on two side walls of the fixed block;

the two forceps arms are arranged oppositely up and down, and connecting holes of the forceps arms are respectively sleeved on different bosses, so that the clamping part is in a scissor shape;

an applying connecting rod is arranged in the tube body; the two applying connecting rods are straight rod-shaped, the front ends of the applying connecting rods are provided with a plurality of positioning holes, and the rear ends of the applying connecting rods are connected with a firing mechanism of the applying clamp; the applying connecting rod is clamped at the outer side of the clamp arm connecting part; the positioning holes correspond to the sliding grooves and are arranged in different positioning holes and different sliding grooves through positioning screws or pins, so that the clamp arms can be driven to open to different maximum angles when the applying connecting rod moves back and forth.

2. The clip applier head of claim 1, wherein there are three sliding grooves and three positioning holes, the maximum opening angles of the corresponding arms are 27 °, 15 ° and 6 °, respectively, and the clip applier head is suitable for clamping a large ligation clip, a medium ligation clip and a small ligation clip.

3. The clip applier as claimed in claim 1, wherein said slide slot has a length and an angle of inclination which are related to each other as follows: a/2= arcos (L1/L3) -b; wherein, a is the maximum included angle of the opening of the forceps arms, L1 is the stroke of the applying connecting rod, L3 is the length of the sliding chute, and b is the inclination angle of the sliding chute.

4. The clip applier head of claim 1, wherein through holes are respectively formed on both sides of the front end of the tube body; the mounting hole corresponds to the boss; the boss is provided with a screw hole; the fixing block is arranged in the pipe body and is arranged on the mounting hole and the screw hole through connecting screws so as to fix the clamp head on the pipe body.

5. The clip applier head of claim 4, wherein the tube body behind the mounting hole is provided with an adjusting hole which is through from inside to outside; the adjusting hole is in a waist-shaped hole shape and corresponds to the sliding groove.

6. The clip applier head of claim 1, wherein a limiting groove is formed on the inner side wall of the tube body; the applying connecting rod is arranged in the limiting groove.

7. The clip applier head of claim 1, wherein said anchor block is hollow and open at both front and rear ends; the front end of the fixed block corresponds to the clamping part, and the rear end of the fixed block is correspondingly provided with a ligation clip magazine in the tube body; the ligation clip magazine is internally provided with a plurality of ligation clips.

8. The clip applier head of claim 1, wherein a guide groove is formed inside said holding portion; the width of the guide groove is adapted to the ligature clamp.

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