CN201104914Y

CN201104914Y - Tensioning wire internal fixation system for bone fracture therapy

Info

Publication number: CN201104914Y
Application number: CNU2008200045356U
Authority: CN
Inventors: 侯晓华
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-01-23
Filing date: 2008-01-23
Publication date: 2008-08-27
Anticipated expiration: 2018-01-23

Abstract

The utility model provides a tension steel wire internal fixation system used for treating fracture, belonging to the osteoplastic instrument, in particular to a modified osseous pin and a fixation system, comprising a osseous pin (9) and a matched steel wire (8); wherein the osseous pin comprises a needle point (1), a fixation section (2) and a threading hole (3). The utility model is characterized in that a thick section (10) is formed at the threading hole (3); a fracturable thread (4) is threaded through the threading hole (3) away from the needle point (1); and an elastic tail end (5) is arranged on the fracturable thread (4) away from the needle point (1). The tension steel wire internal fixation system has the advantages of reliable fixation, effective prevention of Kirschner wire from rotation, slippage and slack after fixation, fracturable elastic tail end, which can relieve the mechanical needle stimulus on tissue at the tail end caused by overlength of the tail end so as to relieve the pain of sufferer after operation, and convenient removal after union.

Description

A kind of tension steel wire inner fixation system that is used for fractures

Technical field

This utility model belongs to orthopedic instrument, particularly the osseous pin of modification and fixed system thereof.

Background technology

At present, in the world to patella and olecranal fracture, mostly adopt Kirschner wire to fix, it is easy and simple to handle, and is effectively fixing, economical and practical, but in clinical use, find fixedly behind the fracture site, the mobile of needle body often to occur with Kirschner wire, so, some doctors just are converted into the curved of 90 degree to Kirschner wire on operating-table, but the other end is difficult to bending in tissue, even all bendings of two ends, when needle body rotated, steel wire still can come off.Brought many worries to the medical worker, the patient can not carry out early stage exercise of joint function, has brought great misery to patient.For this reason, people have done a large amount of improvements to it.The patent No. as Patent Office of the People's Republic of China's bulletin on July 16th, 1999: the patent of 982197446 " kirschner wire with hole " by name, it is to hole on existing Kirschner wire, then steel wire is penetrated in the hole, though it has solved the sliding problem of Kirschner wire, but, new problem has appearred again.At first be the intensity that greatly reduces Kirschner wire, cause the easy fracture at boring position.Secondly, its spacing of wells is from being difficult to and needing internal fixation bone length coupling, makes a fixing insecure or end can't penetrate steel wire.

Summary of the invention

The technical problems to be solved in the utility model provides a kind of simple in structure, and strong firmly assembling and disassembling is used for the tension steel wire inner fixation system of fractures easily,

For addressing the above problem, this utility model provides a kind of tension steel wire inner fixation system that is used for fractures, comprise an osseous pin 9 and the steel wire 8 that matches with it, described osseous pin comprises needle point 1, one canned paragraph 2 and through wires hole 3, described through wires hole 3 positions form and to increase thick section 10, away from the direction of needle point 1 easily-folding line 4 are arranged at through wires hole 3, also have an elasticity rear 5 at easily-folding line 4 away from the direction of needle point 1.It can be round increasing thick section 10, column type, ball-type, olive-type; Through wires hole 3 can be a rectangle, and square is round, ellipse; Needle point 1 can be a pyramid type, many ribs type or triangular form; Its canned paragraph 2 length are 50-100mm, and its osseous pin 9 diameters are 2.5-3.5mm, and its elasticity rear 5 length are 150-250mm, increase thick segment length 4-6mm.Owing to increase slightly at the pin hole place, increased the intensity of osseous pin, elasticity rear 5 makes operation Shi doctor better control osseous pin, after operation, the elasticity rear is easy to again fracture from easily-folding line 4.

Characteristics of the present utility model are that it had both kept original Kirschner wire advantage easy to use, have fixing reliable again, can effectively prevent the shortcoming that Kirschner wire gets loose in the easy rotational slide in fixing back, and flexible tail frangibility, the minimizing afterbody is kept somewhere long and is caused the mechanical stimulus of pin end to the afterbody tissue, the misery of patient's postoperative is reduced, convenient to remove after the union of fracture.

Description of drawings

Accompanying drawing 1 is a structural representation of the present utility model;

Accompanying drawing 2 is a use sketch map of the present utility model.

The specific embodiment

Below in conjunction with accompanying drawing this utility model is described in detail.

As shown in Figure 1, this utility model comprises an osseous pin 9 and the steel wire 8 that matches with it, described osseous pin comprises needle point 1, one canned paragraph 2 and through wires hole 3, described through wires hole 3 positions form and increase thick section 10, away from the direction of needle point 1 easily-folding line 4 is arranged at through wires hole 3, also have an elasticity rear 5 away from the direction of needle point 1 at easily-folding line 4.It can be round increasing thick section 10, column type, ball-type, olive-type; Because circle spicule 9 forms at the position of through wires hole 3 and increases thick section 10, solved the intensity of through wires hole 3 reduction osseous pins, cause the problem of the easy fracture at boring position.Through wires hole 3 can be arranged to rectangle as required, and square is round, ellipse; Needle point 1 can be a pyramid type, many ribs type or triangular form; Its canned paragraph 2 length are 50-100mm, and its osseous pin 9 diameters are 2.5-3.5mm, and its elasticity rear 5 length are 150-250mm, increase thick segment length 4-6mm.

As shown in Figure 2, with the Patella fracture is example, after its fracture, its fracture site 7 is resetted, adopt the patella 6 after osseous pin 9 will be fractured to reset, with canned paragraph 2 front portions of steel wire 8 ring set osseous pins 9, the two ends with draw point 8 all penetrate through wires hole 3 then, tighten fixingly behind the taut wire, the far-end that lifts osseous pin 9 then fractures from easily-folding line 4 positions.Because in canned paragraph 2 front portions that an end of osseous pin adopts steel wire 8 ring set osseous pins 9, the described like this tension steel wire inner fixation system that is used for fractures is easy to and needs internal fixation bone length coupling, makes fixation, and simple to operate.After the union of fracture, cut the osculum of a 1.0mm from the position of through wires hole 3, cut off an end of steel wire, just can take out internal fixation system smoothly.

Claims

1 one kinds of tension steel wire inner fixation systems that are used for fractures, comprise an osseous pin (9) and the steel wire (8) that matches with it, described osseous pin comprises needle point (1), one canned paragraph (2) and through wires hole (3), it is characterized in that the formation of described through wires hole (3) position increases thick section (10), away from the direction of needle point (1) easily-folding line (4) is arranged at through wires hole (3), also have an elasticity rear (5) away from the direction of needle point (1) at easily-folding line (4).

2, according to the described a kind of tension steel wire inner fixation system that is used for fractures of claim 1, it can be round it is characterized in that increasing thick section (10), column type, ball-type, olive-type.

3, according to the described a kind of tension steel wire inner fixation system that is used for fractures of claim 2, it is characterized in that its through wires hole (3) can be a rectangle, square, round, ellipse.

4,, it is characterized in that described needle point (1) can be a pyramid type, many ribs type or triangular form according to any the described tension steel wire inner fixation system that is used for fractures in the claim 1,2 or 3.

5, according to the described a kind of tension steel wire inner fixation system that is used for fractures of claim 4, its canned paragraph (2) length is 50-100mm, and its osseous pin (9) diameter is 2.5-3.5mm, and its elasticity rear (5) length is 150-250mm, increase thick segment length 4-6mm, steel wire (8) diameter 1mm.

6, according to the described a kind of tension steel wire inner fixation system that is used for fractures of claim 4, its canned paragraph (2) length is 50-100mm, and its osseous pin (9) diameter is 2.5-3.5mm, and its elasticity rear (5) length is 150-250mm, increase thick segment length 4-6mm, steel wire (8) diameter 1mm.