CN202605055U

CN202605055U - Femoral intertrochanteric fracture hip joint prosthesis for the aged

Info

Publication number: CN202605055U
Application number: CN2012201198088U
Authority: CN
Inventors: 童培建; 储小兵; 徐宁; 郝改平
Original assignee: Zhejiang Provincial Hospital of Traditional Chinese Medicine; Beijing Lidakang Technology Co Ltd
Current assignee: Zhejiang Provincial Hospital of Traditional Chinese Medicine; Beijing Lidakang Technology Co Ltd
Priority date: 2012-03-27
Filing date: 2012-03-27
Publication date: 2012-12-19
Anticipated expiration: 2022-03-27

Abstract

The utility model relates to a medical hip joint prosthesis, in particular to a femoral intertrochanteric fracture hip joint prosthesis for the aged, which comprises a femoral stem, a femoral head, a large tuberositas plate, a lock knob and a binding tape, wherein the cross section of the stem body of the femoral stem is wider outside and narrower inside; the shoulder part of the femoral stem is provided with a shoulder peak; a columnar structure with a multi-rib groove is arranged at a far end; the large tuberositas plate is an arc-shaped plate; four symmetric grabs are arranged on both sides of the large tuberositas plate; and the lock knob is provided with two transverse through holes into which the binding tape is inserted, and a longitudinal screw counter bore. Due to the adoption of the femoral intertrochanteric fracture hip joint prosthesis for the aged related in the utility model, the defects of complex broken bone fixation surgery and high difficulty existing in the prior art are overcome, the prosthesis can be effectively prevented from sinking rotationally, and broken bone fixation surgery is easy and convenient.

Description

Old intertrochanteric fracture of the femur hip prosthesis

Technical field

This utility model relates to medical hip prosthesis, particularly, relates to a kind of old intertrochanteric fracture of the femur hip prosthesis.

Background technology

In the orthopaedic surgical operations medical treatment, execute the prosthetic replacement and perform the operation, substitute and repair the natural joint of damage, make it recover physiological function, releasing is ailing, is a kind of effective method for treatment, more and more is widely used.But can the articular prosthesis of implant into body, particularly femoral stem are fixing in pulp cavity steady in a long-term, is the key that improves service life and curative effect, also is that people extremely pay close attention to the problem with continuous research and inquirement.Along with the continual renovation of science and technology development and theory, present in recent years, the prosthese that has polytype intertrochanteric fracture to use; Like the femoral head defects substituted type; The steel wire bundle type, the former loses the greater trochanter sclerite, and the latter bundlees the difficulty that resets to the fragile polylith fracture person of old sclerotin.

Prosthese of the prior art has following deficiency: the function that can not fully recover original greater trochanter and ligament that adheres to and soft tissue.

The utility model content

The purpose of this utility model is, to the problems referred to above, a kind of old intertrochanteric fracture of the femur hip prosthesis of the function that can realize keeping original tuberosity and ligament that adheres to and soft tissue is provided.

For realizing above-mentioned purpose; The technical scheme that this utility model adopts is: old intertrochanteric fracture of the femur hip prosthesis, comprise femoral stem and femoral head, and the femoral stem near-end is wide at the top and narrow at the bottom; Femoral stem handle body shape of cross section is wide outside and narrow inside, and the femoral stem shoulder is provided with acromion; Far-end is the column structure that is provided with many ribs groove; Said hip prosthesis also includes greater trochanter plate, cage knob and binding strap, and said greater trochanter plate is curved tabular, and the extrados both sides are provided with symmetric four grabs, and intrados is provided with the awl nail; Said cage knob is provided with two through hole and screw counter bores of vertically locking strapping tape of laterally wearing binding strap.

The greater trochanter plate that the present invention had further is characterized as, and the material of greater trochanter plate is pure titanium material.

Awl nail on the greater trochanter plate of the present invention further limits and is characterized as: said awl nail diameter is 2-4mm, follows closely the long 3-5mm that is, quantity 2-4.

Further, described acromion height is 5-15mm, and wide is with handle body thickness.

Further, the set fin groove number of said handle body far-end is 6-8, the high 1-2mm of rib, and the wide 0.5-2mm of rib, distal diameter is 8-18mm, the long 130mm-200mm of said handle.

The old intertrochanteric fracture of the femur hip prosthesis of each embodiment of this utility model owing to comprise the broach and the greater trochanter plate of band rib and groove, can be fixed femoral stem handle body and sclerite; Thereby can overcome prosthese rotation sinking in the prior art, sclerite is complicacy and the bigger defective of operating difficulty fixedly, can effectively prevent prosthese rotation sinking, has the fixing advantage simply and easily of the bone of coming off piece.

Through accompanying drawing and embodiment, the technical scheme of this utility model is done further detailed description below.

Description of drawings

Fig. 1 is old intertrochanteric fracture of the femur hip prosthesis femoral stem of this utility model and femoral head assembling sketch map;

Fig. 2 is that femoral stem A-A is to cutaway view;

Fig. 3 is that femoral stem B-B is to cutaway view;

Fig. 4 is a greater trochanter plate front view,

Fig. 5 is a greater trochanter plate vertical view,

Fig. 6 is the cage knob sketch map

Fig. 7 is the cage knob front view,

Fig. 8 is the cage knob vertical view,

Wherein:

The 1-femoral stem; The 2-femoral head; The 4-acromion; 5-handle body; The 7-groove; The 8-rib; 9-greater trochanter plate; The 10-grab; The 11-cage knob; The 12-through hole; The 13-counterbore.

The specific embodiment

As shown in Figure 1, be the femoral stem 1 of this utility model hip prosthesis and the installation diagram of femoral head 2.The shape of cross section of femoral stem 1 handle body is wide outside and narrow inside, and femoral stem 1 shoulder is provided with acromion 4, and acromion 4 height are 5-15mm, and wide is with handle body thickness; Far-end is the column structure that is provided with the fin groove, and the fin groove number is 6-8, the high 1-2mm of rib, and the wide 0.5-2mm of rib, the design of fin more helps anti-femoral stem and in pulp cavity, rotates; Hip prosthesis also includes greater trochanter plate 9, cage knob 11 and binding strap, and greater trochanter plate 9 is curved tabular, and the extrados both sides are provided with symmetric four grabs 10; Grab 10 is the arcuation projection, can locate strapping tape after depressing, and intrados also is provided with the awl nail; The preferred diameter of awl nail is 2-4mm; Nail is long to be 3-5mm, quantity 2-4, is used to lock tuberosity bone piece; Cage knob 11 is rectangular structure, and cage knob 11 is provided with two through hole 12 and vertical screw counter bores 13 of laterally wearing binding strap, and the screw that screws in counterbore is pressed on the strapping tape that passes through hole, the locking strapping tape.Binding strap is twisted system by titanium silk or steel wire; Femoral stem table 1 is corundum flour milling, titanium coating micropore face or hydroxyapatite coating layer micropore face; The material of greater trochanter plate 9 is pure titanium material.

During operation, with splitting bone on the greater trochanter or the bone that fractures is bundled on the femoral stem 1, utilize greater trochanter plate 9 and acromion 4 to play the gathering effect jointly, be fixed with strapping tape and greater trochanter plate 9.Strapping tape passes grab 10; Depress grab strapping tape is fixed, walk around femoral stem 1 again two through holes 12 are passed from relative direction respectively in the strapping tape two ends, after the tension; Screw is screwed in counterbore 13 push down the strapping tape in the through hole, the part of again strapping tape being stretched out cage knob 11 cuts off and gets final product.

This hip prosthesis femoral stem can be complementary with arbitrary standards type femur bulb.Old intertrochanteric fracture of the femur hip prosthesis, behind the implanted femur pulp cavity, the form that bundlees with greater trochanter plate and strapping tape bundlees fixing to large and small tuberosity part sclerite, preserved tuberosity part bone amount.Both utilized the tuberosity plate to push down to reset back greater trochanter sclerite; Acromion with femoral stem is a baffle plate; Cage knob locking strapping tape; Formation grips the greater trochanter splitting bone or the bone that fractures, simultaneously the dark face of the strapping tape place's of passing diductor muscle and produce tension force can also effectively prevent the greater trochanter sclerite in turn over, make it recover original function.

What should explain at last is: the above is merely the preferred embodiment of this utility model; Be not limited to this utility model; Although this utility model has been carried out detailed explanation with reference to previous embodiment; For a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement.All within the scope of this utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of this utility model.

Claims

1. old intertrochanteric fracture of the femur hip prosthesis comprises femoral stem and femoral head, and said femoral stem near-end is wide at the top and narrow at the bottom, it is characterized in that, said femoral stem handle body shape of cross section is wide outside and narrow inside, and the femoral stem shoulder is provided with acromion; Far-end is the column structure that is provided with many ribs groove; Said hip prosthesis also includes greater trochanter plate, cage knob and binding strap, and said greater trochanter plate is curved tabular, and the extrados both sides are provided with symmetric four grabs, and intrados is provided with the awl nail; Said cage knob is provided with two through hole and screw counter bores of vertically locking strapping tape of laterally wearing binding strap.

2. old intertrochanteric fracture of the femur hip prosthesis according to claim 1 is characterized in that, said binding strap is twisted system by steel wire or titanium silk.

3. old intertrochanteric fracture of the femur hip prosthesis according to claim 1 is characterized in that the material of said greater trochanter plate is pure titanium.

4. old intertrochanteric fracture of the femur hip prosthesis according to claim 1 is characterized in that, the diameter of said awl nail is 2-4mm, and nail is long to be 3-5mm, quantity 2-4.

5. old intertrochanteric fracture of the femur hip prosthesis according to claim 1 is characterized in that, described acromion height is 5-15mm, and wide is with handle body thickness.

6. old intertrochanteric fracture of the femur hip prosthesis according to claim 1 is characterized in that, the set fin groove number of said handle body far-end is 6-8, the high 1-2mm of rib, the wide 0.5-2mm of rib.

7. old intertrochanteric fracture of the femur hip prosthesis according to claim 1 is characterized in that said distal diameter is 8-18mm, the long 130mm-200mm of said handle.