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hip femoral prosthesis

A technology of femoral prosthesis and hip joint, which is applied in the field of medical devices, can solve the problems of poor reduction of the lesser trochanter and insufficient fixation strength, and achieve the effect of rapid recovery of motion function, promotion of rapid healing, and zero loss

Active Publication Date: 2019-12-06
HARBIN MEDICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a femoral prosthesis of the hip joint, which solves the problems of insufficient fixation strength and poor reduction of the lesser trochanter at one time

Method used

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Embodiment Construction

[0024] Such as figure 1 , figure 2 , image 3 , Figure 4 , is the first embodiment of a hip femoral prosthesis provided by the present invention, which includes a femoral stem 10 and a femoral collar 20 connected to each other, and the femoral collar 20 has a substitute for the lesser trochanter 30, wherein:

[0025] Described femoral stem 10 is columnar, and its cross section is as follows Figure 5 As shown, there are eight protruding ribs 11, and form eight ribs, and three distal reserved holes 12 are provided between each rib, thereby forming three rows of distal reserved holes 12 on the femoral stem 10; All the reserved holes 12 at the far end all merge into the lumen 13 inside the femoral stem 10, and the lumen 13 has an opening towards one end of the femoral collar 20; -200um), in order to facilitate bone ingrowth;

[0026] The end of the femoral stem 10 facing the femoral collar 20 also has a stud 14 and a threaded hole 15;

[0027] And described femoral neck c...

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Abstract

The invention provides a hip joint femoral prosthesis. The hip joint femoral prosthesis comprises a femoral stem and a femoral collar which are connected with each other, the femoral stem is columnar,and three rows of far-end preformed holes are formed in the length direction of the femur stem; all the far-end preformed holes are gathered into a tube cavity in the femoral stem, and an opening isformed in the end, facing the femoral collar, of the tube cavity; a first injection hole communicated with the front part and the rear part is formed in the femoral collar, and the first injection hole is communicated with the opening of the tube cavity; a plurality of near-end preformed holes are formed in the peripheral side of the femoral collar, and a second injection hole is formed in the surface of the rear end of the femoral collar and communicated with the near-end preformed holes separately. Bone cement can be injected through the preformed holes according to conditions, and the fixing effect is enhanced; or BMP, PRP and various growth factors are injected to promote quick fracture healing and quickly restore the movement function; the hip joint femoral prosthesis is particularlysuitable for intertrochanteric fractures of lesser trochanter avulsion of senile population, and the zero loss of the postoperative flexion hip muscle force is achieved while the fixing effect is enhanced.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a hip joint femoral prosthesis. Background technique [0002] Intertrochanteric fractures in the elderly, especially intertrochanteric fractures with avulsion of the lesser trochanter, have always been a difficult problem in hip arthroplasty. In the process of reducing the lesser trochanter, traditional prostheses are usually fixed with steel wires, or the reduction is abandoned directly, resulting in decreased hip flexor muscle strength and poor long-term prognosis. At the same time, because the bone quality of the elderly is usually poor, poor bone ingrowth and prosthetic loosening may occur from time to time. At present, none of the existing prostheses on the market can solve the problem of fixation strength and good reduction of the lesser trochanter at one time. Contents of the invention [0003] The invention provides a femoral prosthesis of the hip joint, which solve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/36A61F2/30
CPCA61F2/30771A61F2/3609A61F2/3662A61F2/367A61F2/3672A61F2/3676A61F2002/2825A61F2002/2832A61F2002/30108A61F2002/3625A61F2002/368
Inventor 耿硕许铎毕郑刚杨成林
Owner HARBIN MEDICAL UNIVERSITY
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