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Femoral stem prosthesis, greater trochanter plate and femoral trochanter prosthesis

A trochanteric and femoral stem technology, applied in prosthesis, femur, femoral head, etc., can solve the problem that the bone screw of the bone plate cannot be fixed, and achieve the effect of improving the probability of success, reducing the number of times and the probability

Pending Publication Date: 2020-05-12
BEIJING CHUNLIZHENGDA MEDICAL INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When artificial hip replacement surgery is required at the same time, the bone nail of the bone plate has the disadvantage that it cannot be fixed. With the improvement of people's living standards, patients' requirements for surgery are gradually increasing. In order to reduce the probability of complications, improve the success rate of surgery and Postoperative effect, there is an urgent need for a design that can solve the problem of intertrochanteric fracture repair in the prior art

Method used

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  • Femoral stem prosthesis, greater trochanter plate and femoral trochanter prosthesis
  • Femoral stem prosthesis, greater trochanter plate and femoral trochanter prosthesis
  • Femoral stem prosthesis, greater trochanter plate and femoral trochanter prosthesis

Examples

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Embodiment 1

[0042] refer to figure 1 , the present invention provides a femoral stem prosthesis, comprising an upper end 11, a lower end 12, a protrusion 13 and a baffle plate 14, the length of the lower end 12 of the femoral stem prosthesis 1 is 120 mm, and the diameter is 14-24 mm. The length of the upper end 11 is 80-110mm, each 10mm has a specification, and the diameter is 14-24mm. The upper end 11 and the lower end 12 are integrally fixed or connected detachably with the lower end 12 through a connecting block arranged on the upper end 11. The interface shape of the lower end 12 It is tapered and the tip is away from the upper end 11, the protrusion 13 is arranged on one side of the upper end 11, and the baffle plate 14 is arranged on the side of the upper end 11 away from the protrusion 13, and the baffle plate 14 has a certain physiological radian, so that the baffle plate 14 can It is more closely contacted with the bone at the intertrochanteric fracture, the width of the baffle p...

Embodiment 2

[0052] refer to Figure 4 , this embodiment discloses a large trochanter plate that can be used simultaneously with the femoral stem prosthesis 1 in embodiment 1 or used alone according to the situation. The large trochanter plate 4 is formed by laser coating fusion technology. The large trochanter plate The material of 4 is a titanium alloy, so that people can make corresponding changes according to the shape of the patient's femur. The greater trochanteric plate 4 is roughly arc-shaped, and one side of the greater trochanteric plate 4 is concaved to form an inner surface. The greater trochanteric plate 4 is provided with a bendable looper 41 on the outer surface, and the number of the looper 41 is at least one. In the present invention, the number of the looper 41 is two, and the two loopers 41 are about the center of the large trochanteric plate 4. Symmetrically, the two loopers 41 may extend in the same direction, may extend in opposite directions or extend in directions a...

Embodiment 3

[0057] This embodiment discloses a femoral trochanter prosthesis, including the femoral stem prosthesis 1 in embodiment one and the large trochanter plate 4 in embodiment two, and also includes fixing the femoral stem prosthesis 1 and the large trochanter plate 4 fixtures.

[0058] When repairing the intertrochanteric fracture, the femoral stem prosthesis 1 is first inserted into the patient's femur, and then the greater trochanter plate 4 is placed on the side of the femur away from the femoral stem prosthesis 1, and then the two are fixed with a fixation piece on the femur.

[0059] refer to Figure 5 , the fixing part includes a fixing bolt 5, the fixing bolt 5 is arranged on the large trochanteric plate 4, the large trochanteric plate 4 is provided with a second threaded hole 43, and the upper end 11 of the femoral stem prosthesis 1 is provided with a first threaded hole 16, The second threaded hole 43 is opened between the four tapered needles 42 , and the fixing bolt 5...

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Abstract

The invention relates to the field of orthopedic medical instruments, specifically to a femoral stem prosthesis, a greater trochanter plate and a femoral trochanter prosthesis. The femoral stem prosthesis comprise an upper end and a lower end which are mutually connected, wherein the lower end is used for fixing the position of the femoral stem prosthesis; a protrusion is arranged at one side of the upper end; a baffle plate is arranged at the other side of the upper end; a Kirschner wire hole allowing a Kirschner wire to penetrate through is arranged on the baffle plate; one side, far away from the protrusion, of the upper end is provided with a first threaded hole; one side of the greater trochanter plate sinks inwards to form an inner surface and matches a femur; a curved needle capableof being bent is arranged on the outer surface of the greater trochanter plate; and a fixed piece used for fixing the greater trochanter plate is arranged on the greater trochanter plate. Thus, intertrochanteric fracture can be repaired; the occurrence frequency and probability of complications are reduced; and the success probability of an operation is improved.

Description

technical field [0001] The invention relates to the field of orthopedic medical devices, in particular to a femoral stem prosthesis, a greater trochanter plate and a femoral trochanter prosthesis. Background technique [0002] The outer side of the upper part of the femur is the greater trochanter, the lower side is the lesser trochanter, and the junction of the femoral shaft and the femoral neck is the intertrochanter, which is the part subjected to the greatest shear stress. The greater trochanter, the lesser trochanter, and the intertrochanteric area are all cancellous bone. Due to the particularity of the distribution of force lines, a dense longitudinal bone plate is formed at the medial rear of the femoral neck and femoral shaft connection, called the femoral calcar. The femoral calcar is vertically upward along the anterolateral side of the lesser trochanter. Cortical bone fusion, the lower pole is fused with the posteromedial cortex of the femoral shaft below the le...

Claims

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Application Information

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IPC IPC(8): A61F2/36A61F2/28A61F2/30
CPCA61F2/36A61F2/3609A61F2/3662A61F2/28A61F2/30749A61F2002/2825A61F2002/2832A61F2002/2828A61F2002/3625
Inventor 解凤宝史春宝童培建储小兵许奎雪王非凡荀世界
Owner BEIJING CHUNLIZHENGDA MEDICAL INSTR
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