CN206482651U - A kind of pubic symphysis reduction forceps - Google Patents

Abstract

The utility model relates to a pubic symphysis reduction forceps, which belongs to the technical field of orthopedic surgical instruments and is used for reducing the separation of the pubic symphysis. The technical solution is: there is a bend at the joint between the clamp head and the clamp body, and the plane of the clamp head composed of two semi-arc clamps has an angle of 120-150 degrees with the plane of the clamp body, and two additional clamps are added to the clamp head. One limit rod, one end of the two limit rods are respectively welded to the inner sides of the two semi-arc clamps of the pliers head, and the other ends of the two limit rods are opposite. In the narrow Stoppa anterior approach, the utility model can make the forceps head reach the inner edge of the obturator on both sides smoothly. At the same time, after clamping and fixing the pubic symphysis, the forceps body is located on the rear side of the forceps head, which will not affect the pubic symphysis. A steel plate is placed on the inner side; the limit rod can prevent the front end of the forceps from being inserted forward without restriction, protect the obturator nerve and obturator blood vessels, and greatly improve the reset force. The utility model has the advantages of simple structure and convenient use, greatly shortens the time for restoring the pubic symphysis, and is worthy of popularization and use.

Description

A kind of pubic symphysis reduction forceps

technical field

The utility model relates to a resetting forceps for resetting the separation of the pubic symphysis, which belongs to the technical field of orthopedic surgical instruments.

Background technique

The pubic symphysis is an important part of the pelvis. The upper edge of the pubic symphysis is part of the upper opening (boundary) of the small pelvis. The pubic symphysis plays an important role in maintaining the stability of the pelvic ring. The pubic symphysis is formed by connecting the pubic symphysis surfaces on both sides with fibrocartilage. There are ligaments on the upper, lower, and front sides of the pubic bone. The upper ligament is the suprapubic ligament, and the lower ligament is the pubis arcuate ligament. In orthopedic trauma, pelvic fractures are mostly caused by high-energy injuries, often accompanied by separation of the pubic symphysis. When the separation of the pubic symphysis is greater than 2.5 cm, surgical treatment is often required. During the operation, it is required to reset the separation of the pubic symphysis and restore the integrity of the pelvic ring.

To reduce the separation of the pubic symphysis, the anterior Stoppa approach is often used at present. The reduction forceps are used to reduce the separated pubic symphysis, and then a reconstruction plate is placed above the pubic symphysis for fixation. The key step in the operation is to reset the separated pubic symphysis, which requires the use of reduction forceps, so the reduction forceps play an important role in the operation. At present, there are two types of repositioning forceps commonly used: one is the cloth towel forceps, which need to be placed inside the pubic symphysis for reduction during the operation. Due to the short body length of the cloth towel forceps and the excessive curvature of the head end, it is difficult to place the cloth towel forceps on the inside of the pubic symphysis. The pubic symphysis on both sides is clamped under the narrow surgical field, and the internal tissues of the pelvic ring are easily damaged due to the operation inside the pelvic ring. Another type of reduction clamp is the Jungbleuth clamp, which needs to be used in combination with cortical screws, but the operation is complicated and time-consuming. At present, neither of these two kinds of reduction forceps can achieve a satisfactory reduction effect, and the operation time is too long, which leads to a series of short-term and long-term complications, which have not been effectively resolved so far. It is very necessary to study a new Reduction forceps to meet the needs of rapid reduction pubic symphysis surgery.

Utility model content

The problem to be solved by the utility model is to provide a pubic symphysis reduction forceps, which can perform simple, fast, safe and effective reduction surgery on the pubic symphysis, can shorten the operation time, and reduce a series of intraoperative and postoperative complications.

The technical scheme that solves the above-mentioned technical problem is:

A kind of pubic symphysis reduction forceps, which includes a forceps head, a forceps body, and a handle. The forceps head is composed of two semi-curved forceps on the left and right. The forceps head is connected to the front end of the forceps body, and the handle is connected to the rear of the forceps body. Its improvement The difference is that there is a bend at the connection between the pliers head and the pliers body, and the plane of the pliers head composed of two semi-arc clamps has an angle of 120-150 degrees with the plane of the pliers body. Limit rods, two limit rods are located in the plane of the clamp head composed of two semi-arc clamps, one end of the two limit rods is welded to the inside of the two semi-arc clamps of the clamp head, two The other end of limit bar is opposite.

In the aforementioned pubic symphysis reduction forceps, the length of the forceps body is greater than the distance between the pubic symphysis and the outer opening of the pelvis.

The above-mentioned pubic symphysis reduction forceps, the length of the two limit rods is 13-16mm, the distance between the two limit rods and the front end of the forceps head is 20mm, and the distance from the rear end of the forceps head is 30mm.

The beneficial effects of the utility model are:

The length of the forceps body of the utility model is greater than the distance between the pubic symphysis and the outer opening of the pelvis, and the length is sufficient to enable the clamping and loosening of the reset forceps to be performed outside the outer opening of the pelvis; the plane of the forceps head and the plane of the forceps body have a bend In the narrow stoppa anterior approach, the forceps head can smoothly reach the inner edge of the obturator on both sides. At the same time, after clamping and fixing the pubic symphysis, the forceps body is located on the rear side of the forceps head and will not affect the pubic bone. The steel plate is placed on the inside of the joint; a limit rod is added to the clamp head, and the limit rod acts as a depth limiter to prevent the front end of the clamp head from being inserted forward without restriction, protecting the obturator nerve and obturator blood vessel, and at the same time, when the clamp is reset The action point is concentrated at the bifurcated intersection of the two limit rods and the clamp, which greatly improves the reset force, and can also prevent the damage of the reset clamp caused by the anti-reset force of the pubic symphysis. The utility model has the advantages of simple structure and convenient use, greatly shortens the time for restoring the pubic symphysis, has significant benefits, and is worthy of popularization and use.

Description of drawings

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

FIG. 2 is a side view of FIG. 1 .

The marks in the figure are as follows: pliers head 1, pliers body 2, handle 3, limit rod 4.

detailed description

The utility model is made up of pliers head 1, pliers body 2, handle 3, limit bar 4. The pliers head 1 is composed of two left and right semi-arc clamps, the pliers head 1 is connected to the front end of the pliers body 2 , and the handle 3 is connected to the rear part of the pliers body 2 .

The figure shows that the length of the clamp body 2 of the existing reset forceps is slightly shorter, and the length of the improved clamp body 2 is greater than the distance between the pubic symphysis and the outer opening of the pelvis, and the length is sufficient to allow the reset clamp to clamp, loosen, etc. Action is performed outside the external pelvic opening.

The figure shows that the arc of the first end of the clamp head of the existing reduction forceps is too large, and the pelvic ring surrounded by the pubic symphysis forms a ring, which makes the reduction forceps unable to clamp the pubic symphysis on both sides. The arc at the end of the improved forceps head becomes smaller enough to be able to clamp the pubic symphysis on both sides.

The figure shows that the forceps head 1 and forceps body 2 of the existing reduction forceps are on the same plane, which results in that the separated pubic symphysis cannot be fixed by the medial side of the pubic symphysis in the narrow operation area, and at the same time hinders the placement of the steel plate. After the improvement, there is a bend at the joint between the pliers head 1 and the pliers body 2, and the plane of the pliers head 1 and the plane of the pliers body 2 formed by two semi-arc clamps have an included angle of 120-150 degrees. The advantage is that in the narrow Stoppa anterior approach, the forceps head 1 can smoothly reach the inner edge of the obturator on both sides. A plate was placed on the medial side of the pubic symphysis.

The figure shows that when the pliers head of the existing repositioning forceps fixes the curved pubic symphysis, the clamping of the repositioning forceps tends to be unstable. The improvement is that two limit rods 4 are added to the clamp head 1. The two limit rods 4 are located in the plane of the clamp head 1 composed of two semi-arc clamps. One end of the two limit rods 4 The inner sides of the two semi-arc clamps of the clamp head 4 are respectively welded and connected, and the other ends of the two limit rods 4 are opposite.

As shown in the figure, the length of the two limit rods 4 is 13-16 mm, the distance between the two limit rods 4 and the front end of the clamp head 1 is 20 mm, and the distance from the rear end of the clamp head 1 is 30 mm. The limit rod 4 acts as a depth limiter, preventing the front end of the clamp head 1 from being inserted forward without restriction, protecting the obturator nerve and obturator blood vessel, and at the same time, when the clamp is reset, the action points are concentrated on the connection between the two limit rods 4 and the clamp The repositioning force is greatly improved at the bifurcation point of the pubic symphysis, and it can also prevent the damage of the resetting forceps caused by the anti-resetting force of the pubic symphysis.

An embodiment of the present utility model is as follows:

The length of the clamp body 2 is 150 mm; the angle between the plane of the clamp head 1 and the plane of the clamp body 2 is 135 degrees; the length of the limit rod 4 is 15 mm, the distance between the limit rod 4 and the front end of the clamp head 1 is 20 mm The distance between the rear ends of the head 1 is 30 mm.

Claims (3)

1. A pubic symphysis reduction forceps, which includes a forceps head (1), a forceps body (2), and a handle (3). The forceps head (1) is composed of two semi-arc clamps on the left and right, and the forceps head (1) is connected to At the front end of the pliers body (2), the handle (3) is connected to the rear of the pliers body (2), which is characterized in that there is a bend at the joint between the pliers head (1) and the pliers body (2), and two semi-arc There is an angle of 120-150 degrees between the plane of the clamp head (1) and the plane of the clamp body (2), and two limit rods (4) are added to the clamp head (1). (4) Located in the plane of the clamp head (1) composed of two semi-arc clamps, one end of the two limit rods (4) is respectively welded to the inner sides of the two semi-arc clamps of the clamp head (1) , the other ends of the two limit rods (4) are opposite. 2 . The pubic symphysis reduction forceps according to claim 1 , characterized in that: the length of the forceps body ( 2 ) is greater than the distance between the pubic symphysis and the external opening of the pelvis. 3 . 3. The pubic symphysis reduction forceps according to claim 2, characterized in that: the length of the two limit rods (4) is 13-16 mm, and the two limit rods (4) are closest to the clamp head (1). The distance from the front end is 20mm, and the distance from the rear end of the pliers head (1) is 30mm.