CN2267773Y

CN2267773Y - Two-directional screw-socket opener with double bent-screw-bolt

Info

Publication number: CN2267773Y
Application number: CN 95214339
Authority: CN
Inventors: 王东风
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-06-28
Filing date: 1995-06-28
Publication date: 1997-11-19
Anticipated expiration: 2005-06-28

Abstract

The utility model relates to an orthopedic appliance, particularly a resetting temporarily fixing appliance used in the orthopedic restitution operation. The utility model mainly comprises a two-directional screw socket, two double-bend studs and two fixing pieces, wherein, the center of the left and the right parts of the two-directional screw socket are respectively provided with a left and a right long thread holes, the upper bend of the double-bend stud is a long stud, and the lower bend is a short circular cylinder with the opposite bent direction with the long stud; the long studs of the two double-bend studs are respectively provided with left and right rotary screw threads and are respectively connected with the corresponding left and right long thread holes of the two-directional screw socket; the short circular cylinder is connected with the fixing piece. Therefore, the utility model has favorable effect of opening the overlapped bones with small size, and can relieve the pain of a patient.

Description

Double bend double-screw bolt two-way threaded-insert dilator

This utility model relates to a kind of orthopedic instrument, mainly is applicable to the temporary fixed apparatus that resets in the orthopaedics reduction operation.

At present, the temporary fixed apparatus that resets commonly used is the unidirectional bone dilator that struts that Switzerland makes, and not only reduction is hard, and volume is big, and structure is also complicated.

In view of this, the purpose of this utility model provides a kind of double bend double-screw bolt two-way threaded-insert dilator, eclipsed bone is strutted, and volume is also less, also can avoid prolonging the operative incision situation.

The purpose of this utility model is achieved in that

It mainly comprises a two-way threaded-insert, two double bend double-screw bolts and two fixtures, wherein, center, the left and right position of two-way threaded-insert has left and right long screwed hole respectively, the last elbow of double bend double-screw bolt is a long threaded rod, following elbow is to bend towards opposite short cylindrical with long threaded rod, the long threaded rod of two double bend double-screw bolts is respectively left and right hand thread and is connected with the corresponding left and right long screwed hole of two-way threaded-insert respectively again, and its short cylindrical connects two respective fixation parts respectively.

The short cylindrical of above-mentioned two double bend double-screw bolts flexibly connects with the support holes of two fixtures respectively.

Owing to adopt such scheme: to eclipsed bone strut effective, simple in structure, volume is less, also can alleviate patient's misery.

Below in conjunction with drawings and Examples this utility model is further specified.

Fig. 1, this utility model exemplary embodiments structural representation;

Fig. 2, this utility model exemplary embodiments two-way threaded-insert cutaway view;

The A-A profile of Fig. 3, this utility model exemplary embodiments Fig. 2;

Fig. 4, this utility model exemplary embodiments double bend bolt structure figure;

Fig. 5, this utility model exemplary embodiments fixture profile;

Fig. 6, this utility model exemplary embodiments fixture vertical view;

Fig. 7, this utility model exemplary embodiments fixation side view.

Among the figure: 1, lockpin hole 2, double bend double-screw bolt 3, two-way threaded-insert 4, swivel nut jack

5, fixture 6, support holes 7, screw hole

Present embodiment mainly comprises a two-way threaded-insert 3, two double bend double-screw bolts 2 and two fixtures 5, shown in Fig. 1-7, wherein:

Two-way threaded-insert 3 has 90 ° the swivel nut jack 4 (radial hole) of being separated by in the middle of being, center, left and right position has concentric left and right long screwed hole (motion thread) respectively for inserting detachable long metal bar (for the rotation two-way threaded-insert), as Figure 1-3.

Elbow is a long threaded rod on two double bend double-screw bolts 2, following elbow is to bend towards opposite short cylindrical with long threaded rod, and in interleave vertical with long threaded rod, short cylindrical, wherein the long threaded rod of a double bend double-screw bolt 2 is right-handed threads, the long threaded rod of another root double bend double-screw bolt 2 is right-handed threads, in addition, also has a lockpin hole 1 (for inserting lock pin) in the short cylindrical termination, two double bend double-screw bolts 2 are connected in the two-way threaded-insert 3 corresponding left and right long screwed holes, shown in Fig. 1,4 with its long threaded rod respectively.

Two fixtures 5 are to have support holes 6 on the vertical plate, have the right angle seat of screw 7 on the horizontal plate, this support holes 6 is slidingly matched with the short cylindrical of double bend double-screw bolt 2, double bend double-screw bolt 2 long threaded rods can be in arbitrary orientation, be convenient to rotate two-way threaded-insert 3 and make axial location with the lock pin that inserts in the lockpin hole 1, screw hole 7 is by screw fixture 5 to be fixed on the bone that human body desires to strut, shown in Fig. 1,5,6,7.

The operating principle of present embodiment is as follows:

When with the long metal bar in the hand propelled swivel nut jack 4, the rotation of two-way threaded-insert 3, make two double bend double-screw bolts 2 respectively left, move right, even promote two fixtures, 5 eclipsed bone distraction reductions simultaneously; When reaching suitable reset position, the two-way threaded-insert 3 that stops operating can play temporary fixed effect again, at the same time, can carry out other internal fixation operation, and the position of bone is put reliably to guarantee to have resetted.

Claims

1, a kind of double bend double-screw bolt two-way threaded-insert dilator, it is characterized in that: it mainly comprises a two-way threaded-insert (3), two double bend double-screw bolts (2) and two fixtures (5), wherein, two-way threaded-insert (a 3) left side, center, right part position has a left side respectively, right long screwed hole, the last elbow of double bend double-screw bolt (2) is a long threaded rod, following elbow is to bend towards opposite short cylindrical with long threaded rod, the long threaded rod of two double bend double-screw bolts (2) is respectively a left side again, right-handed thread, and respectively with the corresponding left side of two-way threaded-insert (3), right long screwed hole connects, and its short cylindrical connects two respective fixation parts (5) respectively.

2, by the described double bend double-screw bolt of claim 1 two-way threaded-insert dilator, it is characterized in that: the short cylindrical of above-mentioned two double bend double-screw bolts (2) flexibly connects with the support holes (6) of two fixtures (5) respectively.