Personalized Customist Acetabular Guide Board

Abstract

The invention provides a customized acetabulum guide plate which is assembled on the acetabulum and used for guiding implantation of an acetabular prosthesis. The customized acetabulum guide plate comprises a semi-spherical cup body, two positioning arms which extend from the edge of the cup body in an upward bending mode and are arranged in a spaced mode, an abutting foot protrusively extending from the outer surface of the cup body and a guide portion upwards extending from the bottom of the cup body. The positioning arms are provided with contacting portions which abut against the surrounding portions of the acetabulum, and the abutting foot abuts against the acetabular fossa. The guide portion is provided with a longitudinally-arranged guide hole. When the acetabulum guide plate is assembled on the acetabulum, the axis where the extending direction of the guide hole is located is set through pre-operation planning and coincides with the central axis of the acetabulum. According to the customized acetabulum guide plate, by abutting the contact portions of the positioning arms against the surrounding portions of the acetabulum and abutting the abutting foot against the acetabular fossa, the customized acetabulum guide plate is stably and firmly assembled at the pre-positioned position of the acetabulum, the structure is simple, and operation is convenient.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a personalized customized acetabular guide plate. Background technique [0002] The acetabular guide plate related to the present invention can be assembled on the acetabulum in hip joint replacement surgery to guide the drill to drill holes along the central axis of the acetabulum to implant the acetabular prosthesis into a predetermined position, such as Disclosed in U.S. Patent Publication No. 8,608,749. The acetabular guide plate includes a main body covering the acetabular fossa of the acetabulum and a guide part extending upward from the bottom of the main body. The main body is designed from a three-dimensional model of the patient's acetabulum and the pelvis surrounding the acetabulum, and includes a body that fits within the acetabular fossa and an extension that extends from the body to the edge of the acetabulum . The guide part is extended upwards from the ...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned acetabular guide plate is only placed on the acetabulum through the cooperation of the mating surface of the main body of the acetabular guide plate and the surface of the acetabular fossa. Manual operation caused the acetabular guide to deviate from the predetermined position when placed on the acetabulum, resulting in a deviation between the extension direction of the drill hole and the central axis of the preoperatively planned acetabular prosthesis implantation, which affected the surgical effect; The guide plate adopts a full fit method to cooperate with the acetabular socket, and there is also a problem that the positioning of the acetabular guide plate is not accurate due to the bony spurs on the acetabular socket, which affects the surgical accuracy

In addition, the patent does not disclose the design and manufacture process of the acetabular guide plate

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