CN2439263Y

CN2439263Y - Skeletal traction apparatus with adjustable rotation angle

Info

Publication number: CN2439263Y
Application number: CN 00218599
Authority: CN
Inventors: 曾炳芳; 郭芝浩
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-07-27
Filing date: 2000-07-27
Publication date: 2001-07-18
Anticipated expiration: 2010-07-27

Abstract

The utility model relates to a bone traction bow with an adjustable rotation angle which comprises a bow frame. The utility model is characterized in that each one of both ends of the bow frame is provided with a centripetal rolling bearing symmetrically; the outer side of each bearing extends a positioning shaft sleeve; a shaft hole of the positioning shaft sleeve is communicated with a bearing hole of the positioning shaft sleeve, and the shaft hole and the bearing hole have the same shaft center and the same radius. The positioning shaft sleeve is provided with a positioning screw hole and a positioning bolt, wherein, the positioning screw hole is communicated with the shaft hole; the positioning bolt is matched with the positioning screw hole. When the bow is used, a traction angle is regulated via rotating the bearings, and a steel needle dose not need to be rotated in bones of a patients. The utility model has the advantages that the pain of patients is eased, and the traction effect is enhanced.

Description

Can adjust the bone traction bow of the anglec of rotation

This utility model relates to the medical auxiliary apparatus that a kind of hospital clinical uses, and relates in particular to a kind of bone traction bow of the anglec of rotation adjusted of clinical orthopaedics synthetism use.

At the bone traction bow (being commonly called as the Ke Shi bow) of the clinical use of hospital orthopedics, with stainless pin (being commonly called as Kirschner wire) implant into body knochenbruch affected part the time, generally need carry out fracture traction and reset at present with traction bow.Because the present traction bow (as shown in Figure 1) that uses, its shelf 1 is fixedlyed connected with the axle sleeve 11 of the stainless pin that the synthetism use is set, can not rotate adjustable, and the stainless pin that synthetism is used is to be positioned in the hole 12 of traction bow two ends axle sleeve, in the process of clinical synthetism, because stainless pin is subjected to the influence of traction angle and traction dynamics, the situation that stainless pin and axle sleeve " are killed " therefore often takes place, and adjustable without spin function between existing traction bow and the draw point, therefore, often cause stainless pin in the intravital rotation of people, displacement causes patient's wound face to increase, and is more vulnerable to infection.

The purpose of this utility model is exactly at above-mentioned defective, and a kind of bone traction bow of adjusting the anglec of rotation that provides, solved in the clinical synthetism medical treatment stainless pin in intravital improper rotation of people and displacement, the implanted bone hole that stainless pin brought of patient is limited in the minimum aperture, dwindled patient's wound face, alleviate patient's misery, improved medical effect.

For achieving the above object, this utility model by the following technical solutions: a kind of bone traction bow of adjusting the anglec of rotation, comprise shelf, be characterized in: described shelf two ends respectively are arranged with a radial antifriction bearing; A location axle sleeve is extended in described each bearing outside, the axis hole of this location axle sleeve and dead eye perforation, and with its concentric, same radius; Described locating shaft put be provided with a positioning screw hole that connects with axis hole and with the adaptive bolt of this positioning screw hole.

Above-mentioned a kind of bone traction bow of adjusting the anglec of rotation, wherein, described radial antifriction bearing is made of outer ring, inner ring, the retainer that is located at the ball between the Internal and external cycle and ball is set; The top of the outer ring of radial antifriction bearing and the end points of shelf are connected; A location axle sleeve is extended in the outside of the outer ring of radial antifriction bearing.

Because this utility model has adopted above technical scheme, therefore in use, regulate traction angle as long as rolling bearing, draw point no patient's bone internal rotation alleviates patient's slight illness, the raising traction effect.

The utility model is described in further detail below in conjunction with embodiment and accompanying drawing thereof:

Accompanying drawing 1 is the structural representation of prior art traction bow;

Accompanying drawing 2 is the structural representation of this utility model embodiment.

See also accompanying drawing, a kind of bone traction bow of adjusting the anglec of rotation of this utility model comprises shelf 1, and the two ends of this shelf respectively are arranged with a radial antifriction bearing 2; A location axle sleeve 3 is also respectively extended in two bearings 2 outsides, and axis hole 31 of this location axle sleeve connects with dead eye 21, and with its concentric, same radius; On described location axle sleeve 3, be provided with a positioning screw hole 32 that connects with axis hole 31, and with the adaptive bolt 33 of this positioning screw hole.

Radial antifriction bearing 2 of the present utility model is made of outer ring 24, inner ring 22, the retainer (not shown) that is located at the ball 23 between the Internal and external cycle and ball is set.The top of the outer ring 21 of radial antifriction bearing 2 and the end points of shelf are connected; A location axle sleeve 3 is extended in the outside of the outer ring 24 of radial antifriction bearing 2.

The dead eye 21 of this utility model radial antifriction bearing 2 is designed to 3mm-5mm, than the slightly larger in diameter of the stainless pin of clinical use a bit.During use, stainless pin passes patient's bone under external force, and the two ends of this stainless pin are enclosed within respectively in the dead eye 21 of traction bow.Because the surgical medical of synthetism often needs traction, to solve the dislocation of fracture.External force has produced one pulling force that certain orientation is arranged according to knochenbruch situation and bone-setting treatment needs by traction bow, at this moment, because the slip effect of ball bearing 2, shelf 1 can rotate around stainless pin, and the relative human body of the stainless pin of implanted patient's bone is motionless all the time.When being adjusted to best angle, the rotation by bolt 33 is positioned at stainless pin in the axle sleeve 3 of location again.

This utility model is simple in structure, and is easy to use, and medical effect is obvious, has higher use value.

Claims

1, a kind of bone traction bow of adjusting the anglec of rotation comprises shelf, it is characterized in that: described shelf two ends respectively are arranged with a radial antifriction bearing; A location axle sleeve is extended in described each bearing outside, the axis hole of this location axle sleeve and dead eye perforation, and with its concentric, same radius; Described locating shaft put be provided with a positioning screw hole that connects with axis hole and with the adaptive bolt of this positioning screw hole.

2, a kind of bone traction bow of adjusting the anglec of rotation according to claim 1 is characterized in that, described radial antifriction bearing is made of outer ring, inner ring, the retainer that is located at the ball between the Internal and external cycle and ball is set; The top of the outer ring of radial antifriction bearing and the end points of shelf are connected; A location axle sleeve is extended in the outside of the outer ring of radial antifriction bearing.