CN2657610Y - Multi-wing middle putting apparatus for artificial hip joint handle - Google Patents

Abstract

The utility model discloses a multi-wing middle putting apparatus for artificial hip joint handle. When an artificial hip joint handle is planted into the human body, the utility model is arranged at the far-end center of the handle. The multi-wing middle putting apparatus consists of a fixed center shaft and wing pieces which are integrated with the center shaft. The utility model is characterized in that the top of the center shaft is provided with a plurality of thin wing pieces in the axes direction of the center shaft. The hip handle and the utility model are planted into the human body together. Because the limb pieces are of the same thickness and are evenly distributed, each wing piece is equably deformed according to the tensile force of the material, which results in the movement of the center shaft to the central position. At the same time, the fixation of the bottom of the center shaft at the far end of the hip handle leads to the movement of the hip handle to the center position at the far end. The utility model is applicable to the hip bone replacement surgery for the hip joint disease.

Description

The mid-device of the multiple wing of artificial hip joint handle

Affiliated technical field

This utility model relates to the artificial hip joint of medical domain.Be a kind of when artificial hip joint bone-cement type femoral stem implanted femur pulp cavity, place the far-end of artificial hip joint handle, make handle place the center of femoral bone cavitas medullaris naturally.

Background technology

The mid-device of multiple wing is a body implant.When being used for the human hip pathological changes and need carrying out the orthopaedics replacement operation, guarantee when artificial hip joint bone-cement type handle is implanted pulp cavity mid-ly naturally, assurance bone cement thickness is more even, and it is stressed evenly and not fragile to satisfy cement layer.Make patient accelerate to recover the physiological function of hip joint to a certain extent, alleviating pain improves motion and improves the quality of living.In prior art, there is not this device, when artificial hip joint handle implanted femur pulp cavity, be difficult for mid-, cause bone cement in uneven thickness, the discontinuity of femur, bone cement layer easy fracture, damage, handle is easily loosening, causes operative failure, increases the weight of patient's physiological load.

Summary of the invention

It is a kind of when artificial hip joint handle implanted femur pulp cavity that the purpose of this utility model is to provide, and can make handle place the implant in femoral bone cavitas medullaris hole in automatically.Can overcome existing artificial hip joint handle and when implanting, be difficult for mid-ly, cause bone cement in uneven thickness, bone cement layer easy fracture, damage, handle is easily loosening, causes the femur unbalance stress and the defective damaged.

Task of the present utility model realizes by this way: by the mid-device of multiple wing that fixedly axis and fin are formed, it is characterized in that on the top of axis, making the fin that several approach along the fixing axis of axis,

From above-mentioned improvement as can be known, from above-mentioned improvement as can be known, owing on the axis top, make the fin that several approach along the fixing axis of axis, when the implanted femur pulp cavity, according to the material tension characteristics, fin meeting homogeneous deformation, because of the varied in thickness unanimity of fin, and axis is evenly distributed in the edge, so, make it the effect that reaches mid-,, cause the femoral stem far-end mid-because of the fixing bottom of axis is fixed on the far-end of femoral stem again.

When implementing this utility model, described fin is than fixedly axis is high 1～50 millimeter, and the quantity of fin is 2～50, and the thickness of fin is: 0.1～10 millimeter.The height of fin, quantity, thickness are excessive, are difficult for installing, and too smallly can not reach mid-effect; Fixedly the length of axis is 1～50 millimeter, and diameter is 1～30 millimeter, and fixedly axis too carefully or too thick all influences fixed effect, the plane at fin place and fixedly the distance of the axis of axis be 0～30 millimeter.

Description of drawings

Fig. 1: be the sketch map of a kind of concrete structure of this utility model.

Fig. 2: for A to view.

The specific embodiment

As depicted in figs. 1 and 2, by one fixedly axis 1 and and this utility model of forming of the fin 2 made of axis disjunctor, be characterized in making the fin 2 that several approach on the fixing top of axis 1, fin 2 is higher 2 millimeters than axis, quantity is 4, thickness is 1 millimeter.Middle axial length is 5 millimeters, and diameter is 2 millimeters.The plane at fin place and fixedly the distance of the axis of axis be 0.The fixedly axis 1 and the fin 2 of the mid-device of multiple wing of this artificial hip joint stalk are made by ultra-high molecular weight polyethylene mold pressing or machining process disjunctor.

Claims (2)

1, a kind of implant that is used for placing the remote location of handle when the artificial hip joint handle is implanted pulp cavity includes fixedly axis (1) and fin (2), it is characterized by along the fixing axis of axis (1) and makes the fin (2) that several approach at the top of axis disjunctor

2, according to the mid-device of the described multiple wing of claim 1, it is characterized in that the fin (2) of the mid-device of multiple wing is higher 1～50 millimeter than axis (1), the quantity of fin (2) is 2～50, the thickness of fin (2) is 0.1～10 millimeter; Middle axial length is 1～50 millimeter, and diameter is 1～30 millimeter.The plane at fin place and fixedly the distance of the axis of axis be 0～30 millimeter.