CN203539430U

CN203539430U - Double-hook strapped screw for treating acromioclavicular joint dislocation

Info

Publication number: CN203539430U
Application number: CN201320692517.2U
Authority: CN
Inventors: 张建林; 谭玉娥
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-11-04
Filing date: 2013-11-04
Publication date: 2014-04-16
Anticipated expiration: 2023-11-04

Abstract

The utility model discloses a double-hook strapped screw for treating acromioclavicular joint dislocation. The double-hook strapped screw comprises a U-shaped screw sheath and a fixing strap. An inner screw is arranged in the U-shaped screw sheath. The sidewalls of the two sides of the screw sheath are arc-shaped surfaces which are provided with smooth grooves. The top ends of the two sidewalls of the screw sheath are provided with hooks respectively. Holes are formed in the positions, close to the tops of the two sidewalls, of the screw sheath and in the bottom of the screw sheath respectively. The fixing strap is arranged in the grooves, penetrates through the holes and is fixed to the hooks. The double-hook strapped screw solves the problems that a acromioclavicular joint can not be fixed firmly and loses the micromovement ability to cause operation failure or complications in the fixing process in the prior art; because of double fixation of the inner screw and the hooks of the screw sheath, the double-hook strapped screw has the effects of stabilization and firmness through elastic fixation, the acromioclavicular joint does not need to be exposed, the structure of the acromioclavicular joint can not be damaged, the double-hook strapped screw is easy to operate in the operating process, and little in time consumption and can promote healing of the acromioclavicular joint to the maximum extent, and patients can recover fast after operation.

Description

A kind of belt loop double hook screw for the treatment of acromioclavicular joint dislocation

Technical field

This utility model belongs to technical field of medical instruments, is specifically related to a kind of belt loop double hook screw for the treatment of acromioclavicular joint dislocation.

Background technology

Acromioclavicular joint dislocation is that a kind of common damage, especially athlete and vehicle accident easily cause injury of acromioclavicular joint, but most orthopedist does not give enough attention.The patient of operation for obvious dislocation and not, there is the symptoms such as shoulder pain, limitation of activity and shoulder deformity in Chang Jifa.Acromioclavicular joint dislocation accounts for 3.2% of whole body joint dislocation, and 12% of shoulder damage is many because violence acts on acromioclavicular joint, causes acromioclavicular joint partly or entirely to lose normal relationship in a mutual action.For the reparation of acromioclavicular joint, fixing and reconstruction, there is at present following several method:

Tension band wiring internal fixation is the early stage method of recommending to be used for the treatment of acromioclavicular joint dislocation of AO association, and existing basic hospital application is extremely wide, its principle be Kirschner wire by acromioclavicular joint then steel wire carry out the Eight characters and tie up the effect of playing fixation Kel's needle.Its advantage has: operating time is short, and pressurization evenly, fully absorbs acromioclavicular joint all directions especially level and tension force longitudinally, meets the biomechanics requirement of acromioclavicular joint.Shortcoming: must fix through acromioclavicular joint because Kirschner wire is fixing, articular cartilage, the articular cartilage dish of acromioclavicular joint have not only been destroyed, and the needs of the fine motion of acromioclavicular joint have been limited, thereby the complication such as the stiff and pain of shoulder joint have been produced, as excessive in patient's activity, especially excessively protract and abduction, the withdraw of the needle, broken needle easily occur and even puncture the severe complications such as the thoracic cavity damage heart, lungs.

Between beak lock, in steel wire, solid art is between the clavicle of application fixation with steel wire directly over processus coracoideus root and processus coracoideus.Its operation designing person's original intention has great expectations of only repairs the effect that coracoclavicular ligament reaches reparation, thereby reaches the object of avoiding destroying capsula articularis acromioclavicularis, articular cartilage and fibrous cartilage dish.But steel wire, because of the movable of shoulder joint and the biomechanics attribute of itself, easily produces fatigability fracture, and the case that operation is overhauled is not within minority.

In recent years, having some scholars application titanium cable to repair coracoclavicular ligament treats acromioclavicular joint dislocation and obtains good effect.Titanium cable has certain elasticity, and with respect to ordinary steel wire, the tensile strength of titanium cable is its 3-6 times, and the 9-8 that anti-fatigue ability is ordinary steel wire doubly, meets the needs of shoulder lock fine motion very much.Meanwhile, titanium cable has good biocompatibility, is a kind of recommendable operation method.But also there is certain problem in operation: as titanium cable in art shrinks tension, the possibility of processus coracoideus or clavicle avulsion fracture can occur.Titanium cable price is more expensive simultaneously, and not all patient can accept.

The design of clavicular hook plate meets acromioclavicular joint topography feature and biomechanics characteristic, the hook portion design surface of steel plate is smooth, during through acromion, do not pass through articular cavity, thereby when shoulder abduction and upper act, allow the acromioclavicular joint being fixed to have certain fine motion, reduce the shear stress that inside-fixture bears, obviously reduced the incidence rate of fragmentation of internal fixation objects.Because of clavicular hook plate fixation, to following, in coracoclavicular ligament, the acromioclavicular ligament damage of dislocation, think it unnecessary to do special exposure and increase the weight of secondary damage with reparation, in practical operation, be also difficult to the stitching reparation being satisfied with, once fracture and dislocation are resetted and are had after lasting reliable fixing, the natural involution of organizing of these damages is drawn close, and can be repaired via cicatrization; But its shortcoming, for must expose acromioclavicular joint simultaneously, must further be destroyed the stability of acromioclavicular joint, and the necessary secondary taking-up of steel plate, after many patient's steel plates taking-ups, there is acromioclavicular joint dislocation again.

Acromioclavicular joint dislocation is often with the fracture of coracoclavicular ligament and acromioclavicular ligament, cause clavicle far-end to be shifted to different directions, Bosworth method concrete steps are for being fixed on one piece of compression screw pressurization between clavicle and the processus coracoideus under it, need to repair acromioclavicular ligament simultaneously and strengthen the stable of acromioclavicular joint, and coracoclavicular ligament because of screw fixing without processing.The method shortcoming is the same with tension band wiring internal fixation, because of the screw obstruction scapula of implantation and the synchronous rotary function of clavicle, limited the fine motion of acromioclavicular joint, clinical report screw loosening slides and causes the number of cases of operative failure not within minority, current less application.

No matter adopt which kind of method to fix, all can not reach and can flexible fastening firmly make again acromioclavicular joint retain original fine motion at present.

Utility model content

The purpose of this utility model is to provide a kind of belt loop double hook screw for the treatment of acromioclavicular joint dislocation, solved prior art fixedly acromioclavicular joint there will be fixing not firm, problem that joints lose fine motion causes operative failure or leads to complications.

The technical scheme that this utility model adopts is: a kind of belt loop double hook screw for the treatment of acromioclavicular joint dislocation, comprise U-shaped screw sheath and fixing loop, in U-shaped screw sheath, be provided with inner bolt, the sidewall on screw sheath both sides is arcwall face, in arcwall face, be provided with smooth groove, the top of screw sheath both sides sidewall is respectively arranged with hook, near the top of screw sheath both sides sidewall and the bottom of screw sheath, is respectively arranged with hole, fixedly loop is arranged in groove, and is fixed on hook through hole.

Feature of the present utility model is also,

Inner bolt and screw sheath are threaded connection.

On inner bolt, be provided with external screw thread.

The both sides of groove are provided with the female thread matching with inner bolt.

The outer surface of screw sheath both sides sidewall is also provided with screw thread.

The beneficial effects of the utility model are: a kind of belt loop double hook screw for the treatment of acromioclavicular joint dislocation of this utility model, solved prior art fixedly acromioclavicular joint there will be fixing not firm, problem that joints lose fine motion causes operative failure or lead to complications, dual fixing by inner bolt and screw sheath bill, resiliently mounted simultaneously having taken into account stablized and fastness, do not need to expose acromioclavicular joint, do not destroy shoulder lock construction, operation technique is simple, consuming time few, promote to greatest extent acromioclavicular joint healing, post-operative recovery is fast.

Accompanying drawing explanation

Fig. 1 is the structural representation of the belt loop double hook screw of this utility model treatment acromioclavicular joint dislocation;

Fig. 2 is the cutaway view of screw sheath in this utility model belt loop double hook screw;

Fig. 3 is the fixing structural representation of loop in this utility model belt loop double hook screw;

Fig. 4 is the using state figure of the belt loop double hook screw of this utility model treatment acromioclavicular joint dislocation.

In figure, 1. inner bolt, 2. screw sheath, 21. grooves, 3. hook, 4. hole, 5. fixing loop.

The specific embodiment

Below in conjunction with the drawings and specific embodiments, this utility model is elaborated.

A kind of belt loop double hook screw for the treatment of acromioclavicular joint dislocation of this utility model, structure is as Fig. 1, comprise U-shaped screw sheath 2 and fixing loop 5, in U-shaped screw sheath 2, be provided with inner bolt 1, inner bolt 1 is threaded connection with screw sheath 2, on inner bolt 1, be provided with external screw thread, as shown in Figure 2, the sidewall on screw sheath 2 both sides is arcwall face, in arcwall face, be provided with smooth groove 21, the both sides of groove 21 are provided with the female thread matching with inner bolt 1, the top of screw sheath 2 both sides sidewalls is respectively arranged with hook 3, near the top of screw sheath 2 both sides sidewalls and the bottom of screw sheath 2, be respectively arranged with hole 4, fixedly loop 5 is arranged in groove 21, and be fixed on hook 3 through hole 4, the outer surface of screw sheath 2 both sides sidewalls is also provided with screw thread.

During use, first above clavicle, cut the otch of approximately 2 centimeter length, expose processus coracoideus and upper clavicle thereof, it is the attachment point of trapezoid ligament and conoid ligament, on clavicle, bore two holes, for screw sheath 2, insert, the screw thread of screw sheath 2 both sides sidewall outer surfaces has guaranteed that screw sheath 2 is fixing more firm when inserting clavicle bone road, and the equal diameters of the diameter of screw thread and groove 21, then according to the distance between the hook 3 of screw sheath 2 both sides side wall ends, on clavicle, bore again two apertures, for hook 3 cards, press solidly and determine loop 5, as shown in Figure 3, fixedly loop 5 adopts polyester fiber, and mid portion is a polyester fiber, two ends extend to two, as shown in Figure 4, then fixedly loop 5 is walked around processus coracoideus, from the hole 4 of screw sheath 2 bottoms, penetrate and be then divided into two, sidewall through screw sheath 2 passes screw sheath 2 from the hole 4 at top, first fixes one end, then strains the other end, reset acromioclavicular joint, tighten inner bolt 1, and fixedly loop 5 is stuck on hook 3, operation completes.Inner bolt 1 is with fixedly loop 5 is dual fixing on hook 3, resiliently mounted simultaneously having taken into account stablized and fastness, screw sheath 2 and inner bolt 1 are made by titanium, itself and polyester fiber can forever be inserted human body, even if take out also very simple, simple, consuming time less, dual the fixing of operation technique reliably, do not need to appear acromioclavicular joint, and post-operative recovery is fast.

The belt loop double hook screw of this utility model treatment acromioclavicular joint dislocation has the following advantages:

1) operation technique is simple, consuming time few, does not need to expose acromioclavicular joint, does not destroy shoulder lock construction, is equivalent to coracoclavicular ligament Anatomical Reconstruction, meets human anatomy feature, has solved the fixing not only simple but also reliable fixing Wicresoft's theory of fracture dislocation;

2) dual fixing reliable, existing inner bolt, has again screw sheath hook to fix, and resiliently mounted simultaneously having taken into account stablized and fastness;

3) rain brush effect and the bungee jumping effect of polyester fiber have been avoided, than the existing interior advantage that fixedly has more.

Claims

1. a belt loop double hook screw for the treatment of acromioclavicular joint dislocation, it is characterized in that, comprise U-shaped screw sheath (2) and fixing loop (5), in described U-shaped screw sheath (2), be provided with inner bolt (1), the sidewall on described screw sheath (2) both sides is arcwall face, in described arcwall face, be provided with smooth groove (21), the top of described screw sheath (2) both sides sidewall is respectively arranged with hook (3), near the top of described screw sheath (2) both sides sidewall and the bottom of screw sheath (2), be respectively arranged with hole (4), described fixedly loop (5) is arranged in described groove (21), and be fixed on described hook (3) through described hole (4).

2. a kind of belt loop double hook screw for the treatment of acromioclavicular joint dislocation as claimed in claim 1, is characterized in that, described inner bolt (1) is threaded connection with described screw sheath (2).

3. a kind of belt loop double hook screw for the treatment of acromioclavicular joint dislocation as claimed in claim 1 or 2, is characterized in that, described inner bolt is provided with external screw thread on (1).

4. a kind of belt loop double hook screw for the treatment of acromioclavicular joint dislocation as claimed in claim 1, is characterized in that, the both sides of described groove (21) are provided with the female thread matching with inner bolt (1).

5. a kind of belt loop double hook screw for the treatment of acromioclavicular joint dislocation as claimed in claim 1, is characterized in that, the outer surface of described screw sheath (2) both sides sidewall is also provided with screw thread.