CN2141264Y

CN2141264Y - Plane four-bar linkage knee joint reduction fixator

Info

Publication number: CN2141264Y
Application number: CN 91232762
Authority: CN
Inventors: 钟红刚; 李茂林; 孟和
Original assignee: ORTHOPEDICS INST CHINA ACADEMY OF TRADITIONAL CHINESE MEDICINE
Current assignee: ORTHOPEDICS INST CHINA ACADEMY OF TRADITIONAL CHINESE MEDICINE
Priority date: 1991-12-26
Filing date: 1991-12-26
Publication date: 1993-09-01
Anticipated expiration: 2001-12-26

Abstract

The utility model relates to a diaplasis fixing device in orthopedics and traumatology. The utility model, which solves the problem that a simple monaxial traction diaplasis fixing device has structure which is not ideal enough and poor use effect, is characterized in that a femur diaplasis fixing device and a tibiofibula diaplasis fixing device can be connected through a hinge position with an adjustable shaft and a pair of plane four-rod mechanisms with four-rod length. The utility model is used for curing knee joint fracture and near knee joint fracture.

Description

Plane four-bar linkage knee joint reduction fixator

This utility model relates to the orthopedics department reduction fixture device.

Existing simple single shaft traction repositionand fixation, articular surface is not that it is under the biomechanics condition during use, and is therefore still not ideal enough to the effect of functional exercise and union of fracture, that is to say that its project organization remains in some shortcomings.

The purpose of this utility model is because existing simple single shaft traction repositionand fixation exists above-mentioned shortcoming, and a kind of reseting fixture of imitative motion of knee joint is provided.

The purpose of this utility model is achieved in that four-bar linkage knee joint reduction fixture device, form by femur reduction fixture device, tibiofibula reduction fixture device and connection fixture etc., it is characterized in that the pair of planar four-bar mechanism with adjustable shaft hinge position and four pole lengths is connected between femur reduction fixture device and the tibiofibula reduction fixture device.

When using, above-mentioned design generally decides four hinges of four-bar mechanism position according to the X-ray sheet.Because this utility model can make the regular movement of knee joint when not damaging, than the existing clinical simple single shaft traction repositionand fixation of use, articular surface is in more suitably under the biomechanics condition, more helps functional exercise and union of fracture.In knee prostheses and other function brace, also can be used to do kneed simulation.

Below by drawings and Examples this utility model is remake detailed description.

Fig. 1 is this utility model overall structure sketch map.

Fig. 2 is this utility model central principle sketch map.

Fig. 3 is the concrete organigram of this utility model (one-sided) four-bar linkage.

Labelling among the figure: 1 femur reduction fixture device, 2,3 connecting rods, 4 tibiofibula reduction fixture devices, 5,6,7,8 reference columns, 9 pad parts, 10,11,12,13 single shaft axles hinges, the long hand adjustment nut of 14 bars, 15 tie down screw holes, connection box on 16,17 times connection boxes.

As shown in the figure: adjustable four-bar linkage comprises inboard and the outside two pairs that are synchronized with the movement, and is bilateral.Four bars of four-bar linkage are also cut with scissors by the single shaft axle by reference column and bar is grown the hand adjustment nut, the tie down screw hole is fixedly connected forms.It adopts material is rustless steel and aluminium alloy.

Going up connection box when this utility model uses is fixed on the femur reduction fixture device; Following connection box is fixed on the shin calf reduction fixture device, in reduction fixture device, adopt simple plane four-bar linkage design principle, simulate the sagittal motion of knee joint, helping patient's functional activity recovers, cooperate other apparatuses, in order to fracture nearly knee joint invagination or associating sclerotin in the treatment knee joint.

Claims

1, four-bar linkage knee joint reduction fixture device, form by femur reduction fixture device, tibiofibula reduction fixture device and connection fixture etc., it is characterized in that the pair of planar four-bar mechanism with adjustable shaft hinge position and four pole lengths is connected between femur reduction fixture device and the tibiofibula reduction fixture device.

2, reduction fixture device as claimed in claim 1 is characterized in that adjustable four-bar linkage comprises inboard and the outside two pairs that are synchronized with the movement, and is bilateral.

3, as claim 1,2 described reduction fixture devices, four bars that it is characterized in that four-bar linkage by reference column and by single shaft axle hinge and bar grow the hand adjustment nut, the tie down screw hole is fixedly connected forms.

4, reduction fixture device as claimed in claim 1 is characterized in that it adopts material is rustless steel and aluminium alloy.