CN213076092U

CN213076092U - Ligament weaving-free device for cruciate ligament reconstruction surgery

Info

Publication number: CN213076092U
Application number: CN202020689411.7U
Authority: CN
Inventors: 高曙光; 旷世达; 赵鑫; 苏超; 张昊; 孙世雄; 李宇晟; 熊依林; 肖文峰
Original assignee: Xiangya Hospital of Central South University
Current assignee: Xiangya Hospital of Central South University
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2021-04-30
Anticipated expiration: 2030-04-29

Abstract

A ligament is exempted from to weave device for among cruciate ligament reconstruction operation, including line cover and hollow sheath pipe, the line cover includes helix and the pull wire of connection at the helix both ends, the helix winding is on the surface of sheath pipe. Utilize the utility model discloses a device is exempted from to weave by ligament, in the art is rebuild to the ligament, only need to treat the ligament of rebuilding and arrange in the sheath pipe and adjust to suitable position, then take out the sheath pipe, taut both ends pull wire for the helix transposition winding can play the effect of controlling and protecting the ligament on the ligament surface, can avoid weaving the step of ligament preparation pull wire from this, saves the operation time.

Description

Ligament weaving-free device for cruciate ligament reconstruction surgery

Technical Field

The utility model relates to the field of medical equipment, concretely relates to ligament for in cruciate ligament rebuilds operation exempts from to weave the device.

Background

The cruciate ligament of knee, also called cruciate ligament, is located slightly posterior to the center of knee joint, is tough, and is lined by synovial membrane, which can be divided into anterior and posterior. The two ligaments cooperate to limit excessive knee motion. Sports injury is the most common phenomenon in cruciate ligament injury. The conventional treatment after the cruciate ligament injury at present is an arthroscopic cruciate ligament reconstruction, namely, an autograft, an allograft or an artificial synthetic graft utilizing tissue engineering is adopted to replace the original injured ligament so as to achieve the reconstruction purpose.

In the operation process, in order to pull the ligament to be reconstructed in the reconstruction process, the two ends of the ligament need to be woven and sewed by using a suture, and the suture is used as a pulling rope to tighten the ligament for reconstruction and fixation. The ligament knitting process takes a lot of time, which prolongs the operation time, and if the knitting is not firm, the traction wire may be separated from the ligament, which increases the uncertainty and risk of the operation.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: overcomes the defects of the prior art, and provides a ligament weaving-free device which is used for cruciate ligament reconstruction surgery and does not need suture to weave and sew the ligament so as to shorten the surgery time.

The utility model adopts the technical proposal that: a ligament is exempted from to weave device for among cruciate ligament reconstruction operation, including line cover and hollow sheath pipe, the line cover includes helix and the pull wire of connection at the helix both ends, the helix winding is on the surface of sheath pipe.

In the ligament reconstruction technique, only need to treat the ligament of rebuilding and arrange in the sheath pipe and adjust to suitable position, then take out the sheath pipe, taut both ends pull wire for the helix strand winding plays the effect of holding and protecting the ligament on the ligament surface, uses the device can avoid weaving the step of ligament preparation pull wire, has saved the operation time.

Preferably, the spiral line consists of a first spiral line and a second spiral line which are reversely spiral, and the first spiral line and the second spiral line are mutually staggered and wound on the outer surface of the sheath tube; the two reverse spiral helices can make the winding effect of ligament better.

Preferably, the wire diameter of the wire sleeve is 0.5-1 mm.

In the scheme, the 0.5-1 mm diameter wire can prevent the intercondylar notch impact caused by the fact that the wire is too thick in the joint and can also prevent the wire from being too thin to cause insufficient strength.

Preferably, the surface of the wire cover is coated with a bone formation promoter.

Preferably, the length of the traction wire is 40-60 cm.

Preferably, the outer surface of the sheath tube is smooth, so that the sheath tube can be easily taken down from the wire sleeve.

Preferably, the length of the sheath is 20-24 cm, so as to match the length of the ligament.

Preferably, the thread cover is made of a non-absorbable suture.

The utility model has the advantages that: the structure is simple, the operation is convenient, the operation is simplified, the operation time is shortened, and the risks of ligament damage and reconstruction failure are reduced; easy to manufacture, cheap in material, and can reduce cost and reduce burden of medical expenses.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

As shown in fig. 1, the ligament braiding-free device for cruciate ligament reconstruction surgery comprises a wire sleeve and a hollow sheath tube 3, wherein the wire sleeve is composed of a spiral wire 2 located in the middle and traction wires 1 connected at two ends of the spiral wire, and the spiral wire 2 comprises a first spiral wire 201 and a second spiral wire 202 which are reversely spiral. The diameter of the thread sleeve is 0.5-1 mm according to the diameter of the thread in the conventional cruciate ligament reconstruction. Because the traction wire needs to be pulled by hand after the cruciate ligament is implanted, and the traction wire is screwed in the screw for fixation, the length of the traction wire 1 is preferably 40-60 cm, so that the traction wire can be held by the hand. The sheath 3 can be made in different models with an internal diameter of 3, 3.5, 4, 4.5 or 5mm, according to the different diameters of the ligament to be reconstructed taken out during the operation, so that the ligament to be reconstructed can just pass through the sheath. The ligament length that takes off clinically and be used for the reconstruction is about 24cm generally, and the purpose of helix is exactly to hold the ligament, so needs the length of sheath 3 just to be fit for the ligament or slightly be less than the ligament, from this 20 ~ 24cm of sheath 3 length selection.

In this embodiment, the thread cover can be made of a non-absorbable seam made of polyethylene terephthalate, so that the thread cover can hold and protect the ligament all the time.

In the operation, after making arthroscopy approach and exploring, take out the ligament of waiting to rebuild, tie a knot with the PDS line one end of the ligament of waiting to rebuild and fix, measure the ligament diameter, select suitable sheath pipe model, pass the PDS line sheath pipe 3, pull the ligament into in sheath pipe 3, adjust to the intermediate position, take off PDS line and sheath pipe 3, arrange the ligament in on the pretensioning device, the pull wire 1 at taut both ends, make first helix 201 and second helix 202 hug closely the winding in the ligament surface, it is fixed to tie a knot with pull wire 1 again, it is fixed to implant the ligament at last in the bone canal.

Claims

1. A ligament exempts from to weave device for among cruciate ligament reconstruction operation, its characterized in that, including line cover and hollow sheath pipe (3), the line cover includes helix (2) and connects pull wire (1) at helix (2) both ends, helix (2) winding is on the surface of sheath pipe (3).

2. The ligament-free weaving device for use in cruciate ligament reconstruction surgery according to claim 1, wherein the helical wire (2) is composed of a first helical wire (201) and a second helical wire (202) which are reversely helical, and the first helical wire (201) and the second helical wire (202) are wound around the outer surface of the sheath (3) in an interlaced manner.

3. The ligament-weaving-free device for use in cruciate ligament reconstruction surgery of claim 1, wherein the wire diameter of the wire sleeve is 0.5-1 mm.

4. The ligament-braiding apparatus for use in cruciate ligament reconstruction surgery of claim 1, wherein the surface of the wire sheath is coated with a bone formation promoter.

5. The ligament weaving-free device for cruciate ligament reconstruction surgery according to claim 1, wherein the length of the traction wire (1) is 40-60 cm.

6. The ligament weaving-free device for use in cruciate ligament reconstruction surgery according to claim 1, characterized in that the outer surface of the sheath (3) is smooth.

7. The ligament weaving-free device for use in cruciate ligament reconstruction surgery according to claim 1, characterized in that the sheath (3) has a length of 20-24 cm.

8. The ligament-free weaving device for use in cruciate ligament reconstruction procedures of claim 1 wherein the wire sleeve is made of non-absorbable suture.