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Filing guide plate for total hip replacement surgery and manufacture and use methods of filing guide plate

A technology for total hip replacement and manufacturing method, which is applied in the field of filing and grinding guides, can solve the problems of lowering the requirements of the doctor's experience and technical level and the deviation of the implantation position of the cup, so as to simplify the filing and grinding operation, avoid the offset, and improve the connection strength. Effect

Inactive Publication Date: 2018-11-06
CHONGQING UNIV +1
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the deficiencies of the above-mentioned prior art, the present invention provides a rasp guide for total hip replacement surgery, which solves the technical problem in the prior art that the subjective positioning of the rasp angle leads to large deviations in the implantation position of the acetabular cup, It can help improve the positioning accuracy of the filing direction, facilitate the simplification of the filing operation, and reduce the requirements for doctors' experience and technical level

Method used

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  • Filing guide plate for total hip replacement surgery and manufacture and use methods of filing guide plate
  • Filing guide plate for total hip replacement surgery and manufacture and use methods of filing guide plate

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Embodiment Construction

[0033] The present invention will be further described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0034] Such as figure 1 As shown, a rasp guide plate for total hip replacement surgery is characterized in that: it includes a socket-shaped guide plate that is 3D printed according to the three-dimensional model of the patient's acetabular socket, and the printing ratio is 1:1, so that the socket The shaped guide plate has an outer surface that can fit the inner surface of the patient's acetabular socket; there are at least two hollow guide posts evenly distributed along the outer edge of the opening of the socket-shaped guide plate, and the hollow guide posts are fixedly connected to the socket-shaped guide plate; the socket-shaped guide plate After fitting with the inner surface of the acetabular socket, the axis of the hollow guide post can be parallel to the patient's acetabular axis.

[0035] Since the socket-shaped guide plat...

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Abstract

The invention discloses a filing guide plate for a total hip replacement surgery. The filing guide plate comprises a nested guide plate for 3D (three-dimensional) printing according to a three-dimensional model of an acetabular fossa of a patient and the proportion of 1:1, and at least two hollow guide posts are uniformly distributed along the outer side of the edge of an opening of the nested guide plate. After the nested guide plate is fitted with the inner surface of the acetabular fossa, the axes of the hollow guide posts can be parallel to the acetabular axis of the patient. The inventionfurther discloses a manufacture method. A three-dimensional acetabular fossa model is built according to a pelvis CT (computed tomography) image of the patient by three-dimensional reverse modeling software, the acetabular axis is determined in three-dimensional model design software, the three-dimensional model of the filing guide plate is designed, and 3D printing is performed to obtain the filing guide plate. The invention further discloses a use method. Steel nails are screwed into the hollow guide posts, and the filing guide plate is taken down, so that an acetabular file can perform filing along the axis direction of the steel nails. Filing direction positioning precision is improved, filing operation is simplified, and requirements for experience and technical levels of doctors arelowered.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a rasp guide plate used in total hip joint replacement surgery and a manufacturing method of the rasp guide plate. Background technique [0002] The total hip joint is composed of the acetabulum and the femoral head. Total hip replacement surgery is to replace the diseased total hip joint with an artificial total hip joint. Acetabular debridement is required in total hip replacement surgery, which includes soft tissue resection, osteophyte resection, and acetabular reaming. Acetabular reaming is the use of acetabular reamers to deepen and enlarge the acetabulum to form an acetabular bed that is convenient for installing an acetabular cup (artificial acetabular). Degree is an important factor affecting the stability of acetabular cup installation. Therefore, it is required to use the anteversion angle and abduction angle of the acetabulum as the rasping angle of the ...

Claims

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Application Information

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IPC IPC(8): A61B17/17B33Y10/00B33Y80/00
CPCA61B17/1735A61B17/1746A61B2017/00526B33Y10/00B33Y80/00
Inventor 李军超赵泽李浩杜江涛鄢然
Owner CHONGQING UNIV
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