Screw implantation sighting device

Abstract

A screw implantation sighting device, comprising a sighting device front section (1) and sighting device rear section (2); the rear part of the sighting device front section (1) and the front part of the sighting device rear section (2) are movably connected; The front part and bottom surface of the sighting device front section (1) and the pelvis minor brim (d) fit together. The sighting device front section (1) is provided with a plurality of positioning through-holes; When the front part and bottom surface of the sighting device front section (1) and the pelvis minor brim (d) join, the extension line of the positioning through-holes is located in the posterior wall of the acetabulum (b). An arcuate limit plate (3) is disposed on the sighting device rear section (2); the arcuate limit plate (3) is formed by the rear part of the sighting device rear section (2) bending toward the bottom surface of the sighting device rear section (2); The inner arc of curvature of the arcuate limit plate (3) and the outer rim of the anterior superior iliac spine (c) fit together. The screw implantation sighting device is fixed by multi-point positioning; the device allows for precise positioning, is convenient in operation, has a simple structure, and is low in cost.

Description

technical field [0001] The invention relates to the field of orthopedic medical instruments, in particular to a screw implantation collimator. Background technique [0002] The acetabulum is located in the middle and lower part of the lateral surface of the hip bone. It is composed of the iliac body, the ischial body and the pubic body. For severe fractures, acetabular fractures are generally caused by relatively large impact forces on the acetabulum. Therefore, acetabular fractures are usually accompanied by simultaneous damage to the anterior acetabular column and the posterior acetabular column. Due to the deep position of the acetabulum and complex anatomy , reduction and fixation difficulties, many complications and other reasons have always been difficult problems in the field of orthopedics. [0003] At present, for acetabular fractures, fixation screws are generally used to fix the fracture affected area. During the operation, the direction of needle insertion canno...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of high price of computer-aided facilities in the prior art, the embodiment of the present invention provides a screw implant sight

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