Unlock instant, AI-driven research and patent intelligence for your innovation.

Minimally invasive repair component for osteonecrosis of femoral head, and application

A femoral head necrosis and femoral head technology, applied in medical science, joint implants, prostheses, etc., can solve the problems of increased patient pain, large surgical opening, loose prosthesis, etc., to facilitate recovery and reduce pain , reducing the effect of the opening

Pending Publication Date: 2018-12-14
THE THIRD HOSPITAL OF HEBEI MEDICAL UNIV
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing hip joint replacement surgery, the patient needs to lie on his side, which increases the pain of the patient, and the operation opening is large, and the postoperative recovery is slow. In addition, bone cement and screws need to be used to fix the prosthesis on the For normal bone quality, the operation is complicated, and some patients are prone to prosthetic loosening after surgery, requiring a second operation

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Minimally invasive repair component for osteonecrosis of femoral head, and application
  • Minimally invasive repair component for osteonecrosis of femoral head, and application
  • Minimally invasive repair component for osteonecrosis of femoral head, and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Based on the above, this embodiment is more suitable for older patients. The size of the prosthesis 3 is small to prevent the femoral head prosthesis from slipping out of the acetabulum. The diameter of the filling part 32 is 20-30 mm, and the diameter of the corresponding supporting part 31 is 10-20 mm. Such as image 3 with Figure 4 As shown, the support portion 31 is a cylindrical structure, which is composed of two opposite half cylinders.

[0066] Wherein, the length of the locking cap 51 is 20-30 mm, the length of the supporting part 31 is 40-120 mm, and the length of the screw connection between the supporting part 31 and the locking cap 51 is 10-30 mm, so as to ensure the connection strength between the prosthesis 3 and the femur.

[0067] The application of the minimally invasive repair assembly for femoral head necrosis of the present embodiment in the minimally invasive repair treatment of femoral head necrosis comprises the following steps:

[0068] a1. ...

Embodiment 2

[0080] Based on the above content, this embodiment is more suitable for young and middle-aged patients.

[0081] The size of the prosthesis 3 is relatively large to enhance the bearing capacity of the femur. The diameter of the filling part 32 is 30-40 mm, and the diameter of the corresponding supporting part 31 is 20-40 mm. Such as Figure 5 with Image 6 As shown, the support part 31 is in a sleeve-like structure, which is composed of two half-curved plates facing each other. The sleeve-like structure can reduce the volume of the base hole occupied by the single-lobe support part 31, so that the other large-sized filling part 32 can Pass the base hole smoothly. In order to ensure the strength of the supporting part 31 and enhance the connection stability of the two-petal prosthesis 3, the inner wall of the supporting part 31 has a connecting thread, and the locking part further includes a locking screw 52 matched with the connecting thread.

[0082] Wherein, the length of...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Diameteraaaaaaaaaa
Lengthaaaaaaaaaa
Diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a minimally invasive repair component for osteonecrosis of the femoral head, and an application of the minimally invasive repair component in minimally invasive repair of osteonecrosis of the femoral head. By adopting the minimally invasive repair component, a patient can lie flat during an operation, on the one hand, the comfort of the patient can be improved and the patient can lie flat more stably, on the other hand, a doctor can refer to a contralateral femoral head position to control an operation side position, so as to ensure that both lower extremities are equalin length after the operation; moreover, since a prosthesis is of a petal structure, the prosthesis can cooperate with an acetabulum via a base hole (a filling portion is larger than the base hole),thereby reducing the size of an opening for operation, reducing pain of the patient, and being conductive to postoperative recovery; and a supporting portion of the prosthesis sleeves a cancellous bone, the stability of the prosthesis is high after the operation, and the prosthesis is not easy to loosen.

Description

technical field [0001] The invention relates to the technical field of femoral head necrosis repair, in particular to a femoral head necrosis minimally invasive repair assembly and the application of the assembly in femoral head necrosis minimally invasive repair treatment. Background technique [0002] Femoral head necrosis is a disease in which the blood supply to the femoral head is interrupted or damaged, resulting in the death and subsequent repair of bone cells and bone marrow components, which in turn leads to structural changes in the femoral head, collapse of the femoral head, and joint dysfunction. [0003] Osteonecrosis of the femoral head (ONFH), also known as avascular necrosis of the femoral head (AVN), is a common refractory disease in the field of orthopedics. Femoral head necrosis can be divided into two categories: traumatic and non-traumatic. The former is mainly caused by hip trauma such as femoral neck fracture and hip dislocation, and the latter is main...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): A61B17/16A61F2/46A61F2/38
CPCA61B17/1604A61B17/1659A61B17/1675A61F2/3859A61F2/4601A61F2220/0008
Inventor 陈伟张英泽侯志勇连晓东马利杰
Owner THE THIRD HOSPITAL OF HEBEI MEDICAL UNIV