Hip joint operation guide plate

Abstract

The invention relates to the field of medical instruments, in particular to a hip joint operation guide plate which comprises a guide plate body, the guide plate body comprises a moon-shaped surface matching plate, a horseshoe fossa matching plate and a rotary supporting part, and the moon-shaped surface matching plate, the horseshoe fossa matching plate and the rotary supporting part are connected with a connecting part; the operation guide plate further comprises a rotating part capable of rotating relative to the rotary supporting part, a first positioning through hole is formed in the rotating part, a second positioning through hole is formed in the rotary supporting part, and a third positioning through hole is formed in the moon-shaped surface matching plate; and the operation guide plate further comprises a positioning part capable of sequentially penetrating through the first positioning through hole, the second positioning through hole and the third positioning through hole; and the rotating part is further provided with a guiding piece parallel to the positioning piece. The hip joint operation guide plate is used for positioning and guiding the implanting direction of an acetabular grinding file and an acetabular cup prosthesis in total hip replacement.

Description

technical field [0001] The present application relates to the field of medical devices, in particular to a guide plate for hip joint surgery. Background technique [0002] In total hip arthroplasty, whether the acetabular cup prosthesis can be accurately installed is the key factor affecting the postoperative effect, and the poor position of the acetabular cup prosthesis will cause complications such as prosthesis loosening, wear, and dislocation. Due to the particularity of the acetabular anatomical structure, the placement of the acetabular prosthesis not only needs to consider the position of the acetabular prosthesis and good bony coverage, but also accurately control the orientation, and the anteversion and abduction angles are difficult in space. Accurately judge and adjust. At present, most doctors place the acetabular cup prosthesis by hand based on experience and their own naked eye judgment method. The uncertainty of manual operation makes the postoperative effect...

AI Technical Summary

Problems solved by technology

A small number of doctors have tried to use the acetabular guide to perform surgery, which increases the accuracy of intraoperative positioning and guidance; however, the guides on the market still have certain defects. For example, the hip joint surgery guide provided by CN202022814417.5 needs to cross the acetabulum. The joint capsule needs to be stripped; CN202020158007.7 and CN201420515209.7 provide hip joint surgery guides, the matching surface covers the inner surface of the acetabulum, and is a whole piece, while the lunate surface of the acetabulum and the horseshoe fossa have obvious steps. In patients, the angle between the step formed by the lunate surface of the acetabulum and the horseshoe fossa is even less than 90°, so that the guide plate cannot be effectively matched at the step

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