CN203328864U

CN203328864U - Bionic hip joint handle

Info

Publication number: CN203328864U
Application number: CN2013203985538U
Authority: CN
Inventors: 叶雷
Original assignee: Chongqing Runze Pharmaceutical Co Ltd
Current assignee: Chongqing Runze Pharmaceutical Co Ltd
Priority date: 2013-07-05
Filing date: 2013-07-05
Publication date: 2013-12-11
Anticipated expiration: 2023-07-05

Abstract

The utility model relates to a bionic hip joint handle. The bionic hip joint handle comprises a conical neck opening (1), a handle neck (2), a handle body (3) and a handle tail (4). The bionic hip joint handle is characterized in that the conical neck opening (1) and the handle neck (2) are made of medical titanium alloy in an integral forming mode, a locating frustum (5) is additionally arranged on the tail end face of the handle neck (2), the handle body (3) is a porous tantalum workpiece, locating grooves (6) are formed inside the upper end and the lower end of the handle body (3) respectively so that the handle neck (2) and the handle tail (4) can be correspondingly installed in a matched mode, a locating frustum (5) is arranged on the upper end face of the handle tail (4), a plurality of annular protrusions (8) are further arranged on the outer surface of the upper end of the handle tail (4), at least one groove (7) is further formed in the outer surface of the handle body (3), and the groove (7) extends from the upper end of the handle body (3) to the lower end of the handle body (3). The bionic hip joint handle facilitates discharge of air, blood and the like, has good biocompatibility, and is high in compatibility with human tissue.

Description

A kind of bionic hip-joint handle

Technical field

This utility model relates to the artificial joint in medical domain, relates in particular to a kind of bionic hip-joint handle.

Background technology

Clinical medicine is treated various hip joint disease late period, during as femur head necrosis, hip joint destruction etc., generally adopt the method for hip replacement surgery, body is implanted into made hip joint alternative, to play fixing and supporting role, and the anatomical structure of rebuilding human hip, and make it obtain normal mechanical property to complete certain physiological function, reach thus alleviating pain, improve the purpose of function.

Due to current most metal hip joint handles, while having the insertion near end of thighbone, each side and femur laminating are all comparatively tight, air in femoral bone cavitas medullaris, blood etc. are discharged difficulty, easily cause the pressure in femoral bone cavitas medullaris obviously to increase, and have greatly improved the incidence rate of fat embolism syndrome; Biomechanics distributes uneven, and femur bears gravity and is difficult to equilibrium, causes bone to dissolve and produces and become flexible; Biocompatibility is poor, thereby long-time use is rear and tissue there will be repulsion to affect its service life, has increased the turnover rate of femoral stem.Because the matching of hip joint stalk directly has influence on the surgical effect of hip replacement, thereby the problems referred to above are urgently to be resolved hurrily.

The utility model content

The purpose of this utility model is to provide a kind of bionic hip-joint handle, and this hip joint stalk is convenient to the discharges such as air, blood, and has good biocompatibility concurrently, higher with the tissue matching.

The purpose of this utility model is achieved in that

A kind of bionic hip-joint handle, it includes cervical vertebra mouth, handle neck, handle body and handle tail, it is characterized in that: described cervical vertebra mouth and described handle neck are that medical titanium alloy is one-body molded, and described handle neck terminal surface has additional the location frustum; Described handle body is the porous tantalum product, and inside, two ends is provided with detent respectively up and down, with Corresponding matching, described handle neck and described handle tail is installed; Described handle tail upper surface is provided with the location frustum, and also is provided with a plurality of annular projections on this handle tail upper end outer surface; Described handle external surface also is provided with at least one groove, and this groove extends to the lower end of described handle body from the upper end of handle body.

Above-mentioned handle body is set to the porous tantalum product, and its porosity is 60～70%.This porous tantalum product can adopt the preparations such as foam dipping method, die pressing.Through the discovery that studies for a long period of time: adopt porous tantalum product this artificial hip joint stem as the handle body, the structure of growing in making bone grow into to form, with body bone tissue, organically combine as a whole, in the biocompatibility that has greatly improved this artificial joint, also well met its mechanical property, greatly improved its service life and implanted comfort level, having increased stability and anti-verticity after prosthese is implanted.

The detent that above-mentioned handle body arranges by upper and lower two ends respectively, with above-mentioned handle neck and above-mentioned handle tail place respectively the location frustum of Corresponding matching setting by plug-in type, be connected, and realize fixing.

The degree of depth of above-mentioned groove is 1～3mm, be preferably 2mm, this groove is when discharging the material such as air in femoral bone cavitas medullaris, blood, and the pressure in femoral bone cavitas medullaris can obviously not increase, the incidence rate of fat embolism syndrome will obviously descend, and this degree of depth is more shallow can not affect overall depth.

Above-mentioned groove is arranged at side wider on the handle external surface, and is equipped with groove on two wider sides.

The shape of above-mentioned groove is consistent with the shape of handle body, and its width from top to bottom is consistent, to play good guide functions.

The utlity model has following beneficial effect:

The handle body of the bionic hip-joint handle in this utility model is to have the pore structure product that can make bone grow into, the structure of growing in having realized, as a whole with the body bone tissue combination, reach real biological fixation, strengthened its antitorque and anti-rotational stability.In addition, also have simple in structurely, compact and rationally, assemble efficient and conveniently, connect the characteristics such as reliable.

The accompanying drawing explanation

Fig. 1 is the overall structure schematic diagram of the bionic hip-joint handle in this utility model embodiment 1.

Fig. 2 is the A-A cutaway view in the Fig. 1 after amplifying.

Fig. 3 is the structural representation after the handle of bionic hip-joint described in Fig. 1 splits.

The specific embodiment

Be below this utility model preferred embodiment, and be not intended to limit protection domain of the present utility model.

Embodiment 1

As shown in Figures 1 to 3: a kind of bionic hip-joint handle, it includes cervical vertebra mouth 1, handle neck 2, handle body 3 and handle tail 4; Its cervical vertebra mouth 1 and handle neck 2 adopt medical titanium alloy one-body molded, and handle neck 2 terminal surfaces have additional location frustum 5; Its handle tail 4 upper surfaces also are provided with location frustum 5, and also are provided with 5 annular projections 8 on these handle tail 4 upper end outer surfaces, can effectively prevent from and rotation; Its handle body 3 is for adopting the standby porous tantalum product of foam dipping legal system, its porosity is 60～70%, and its inside, upper and lower two ends is provided with detent 6 respectively, with the location frustum 5 by arranging respectively on plug-in type Corresponding matching installing handle neck 2 and handle tail 4, and finally by laser weld, realize that the three's is fixing; Also be equipped with two grooves 7 that the degree of depth is 2mm on wider two sides on the outer surface of its handle body 3, this groove 7 extends to the lower end of handle body 3 from the upper end of handle body 3, the shape of this groove 7 is consistent with 3 shapes of handle body, and its width is that 2.5mm from top to bottom is consistent, to play good guide functions.

The utlity model has simple and reasonable stablizing, be convenient to the discharges such as air, blood, the similar people's bone of mechanical property, strong with the skeleton matching, have the good characteristics such as biocompatibility concurrently.

Claims

1. a bionic hip-joint handle, it includes cervical vertebra mouth (1), handle neck (2), handle body (3) and handle tail (4), it is characterized in that: described cervical vertebra mouth (1) and described handle neck (2) are one-body molded for medical titanium alloy, and described handle neck (2) terminal surface has additional location frustum (5); Described handle body (3) is the porous tantalum product, and inside, two ends is provided with detent (6) respectively up and down, with Corresponding matching, described handle neck (2) and described handle tail (4) is installed; Described handle tail (4) upper surface is provided with location frustum (5), and also is provided with a plurality of annular projections (8) on this handle tail (4) upper end outer surface; Described handle body (3) outer surface also is provided with at least one groove (7), and this groove (7) extends to the lower end of described handle body (3) from the upper end of handle body (3).

2. bionic hip-joint handle according to claim 1, it is characterized in that: described handle body (3) is set to the porous tantalum product, and its porosity is 60～70%.

3. bionic hip-joint handle according to claim 1 and 2, it is characterized in that: the detent (6) that described handle body (3) arranges by upper and lower two ends respectively, locate with described handle neck (2) and described handle tail (4) the location frustum (5) that Corresponding matching arranges respectively and be connected by plug-in type, and realize fixing.

4. bionic hip-joint handle according to claim 1 and 2, it is characterized in that: the degree of depth of described groove (7) is 1～3mm; Described groove (7) is arranged at wider side on handle body (3) outer surface, and is equipped with groove (7) on two wider sides.

5. bionic hip-joint handle according to claim 3, it is characterized in that: the degree of depth of described groove (7) is 1～3mm; Described groove (7) is arranged at wider side on handle body (3) outer surface, and is equipped with groove (7) on two wider sides.

6. bionic hip-joint handle according to claim 1 and 2, it is characterized in that: the degree of depth of described groove (7) is 2mm; Described groove (7) is arranged at wider side on handle body (3) outer surface, and is equipped with groove (7) on two wider sides.

7. bionic hip-joint handle according to claim 3, it is characterized in that: the degree of depth of described groove (7) is 2mm; Described groove (7) is arranged at wider side on handle body (3) outer surface, and is equipped with groove (7) on two wider sides.

8. bionic hip-joint handle according to claim 5, it is characterized in that: the shape of described groove (7) is consistent with the shape of handle body (3), and its width from top to bottom is consistent.

9. bionic hip-joint handle according to claim 6, it is characterized in that: the shape of described groove (7) is consistent with the shape of handle body (3), and its width from top to bottom is consistent.

10. bionic hip-joint handle according to claim 7, it is characterized in that: the shape of described groove (7) is consistent with the shape of handle body (3), and its width from top to bottom is consistent.