Navigation device capable of accurately locating hemiarthroplasty and manufacturing method of navigation device

An accurate positioning and navigation device technology, applied in shoulder joint, medical science, joint implants, etc., can solve the problem of inaccurate placement of prosthesis, improve accuracy, avoid humeral head subluxation, and shorten surgery effect of time

Inactive Publication Date: 2015-10-28
陆声 +2
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiment of the present invention is to provide a navigation device capable of accurately locating half-shoulder replacement and its manufacturing method, aiming to solve the problem of inaccurate placement of prostheses in clinical practice

Method used

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  • Navigation device capable of accurately locating hemiarthroplasty and manufacturing method of navigation device

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Embodiment

[0024] A navigation device capable of accurately locating a hemishoulder replacement and a manufacturing method thereof include:

[0025] S101, mirroring the healthy side, fitting the humeral head to the ball, determining the center of rotation of the humeral head, and measuring the size of the humeral head;

[0026] S102. First determine the 3 points with the most obvious change of the humeral head from the coronal plane, sagittal plane, and cross-section, and then determine the largest surface of the humeral head;

[0027] S103, making a maximum surface perpendicular through the center of the sphere to determine the axis of the humeral head;

[0028] S104. Determine the most protruding point of the inner and outer condyles on the coronal plane, sagittal plane, and transverse plane, and connect the two points to determine the line between the inner and outer condyles;

[0029] S105. Determine the posterior inclination angle through the line connecting the axis of the humeral...

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Abstract

The invention discloses a navigation device capable of accurately locating hemiarthroplasty and a manufacturing method of the navigation device. The navigation device comprises navigation templates; the two navigation templates are oppositely arranged; the upper portion of the navigation template is horizontally provided with a prosthesis imbedding channel; the navigation template is divided into an upper portion and a lower portion through an intertubercular sulcus; and the upper portion and the lower portion of the navigation template are connected with each other so as to form one integrated body through a connecting component. According to the navigation device of the invention, the lower portion of the navigation template is attached to the intertubercular sulcus of a fractured end of a humerus; and the upper portion of the navigation template is provided with a prosthesis imbedding guide groove which can limit prosthesis imbedding direction and prosthesis imbedding depth. With the navigation device adopted, a novel method is provided for height and posterior slope angle determination in hemiarthroplasty; the problem of incapability of realizing anatomical reduction of a prosthesis caused by various kinds of reasons can be solved; the accuracy of the height and posterior slope angle of an imbedded prosthesis in hemiarthroplasty can be improved; operation time can be shortened; operative complications such as subluxation, overfilling and movement functional limitation of the head of the humerus as well as vascular and nerve injuries can be avoided.

Description

technical field [0001] The invention belongs to the field of medical devices, in particular to a navigation device capable of accurately locating half-shoulder replacement and a manufacturing method thereof. Background technique [0002] The earliest known report of shoulder joint replacement can be traced back to 1893, when French surgeon Pean replaced the glenohumeral joint damaged by tuberculosis with a platinum and rubber prosthesis. In recent years, with the improvement of artificial hemishoulder replacement technology and the continuous improvement of prosthetic design, artificial shoulder joint replacement has gradually become one of the cores of modern shoulder surgery. , Humeral head necrosis, glenohumeral joint rheumatoid arthritis, rotator cuff arthropathy and other shoulder diseases provide effective treatment methods, which play an important role in the development of shoulder joint surgery, and the clinical application effect is more and more satisfactory. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B19/00
CPCA61F2/30721A61F2/40
Inventor 陆声王均罗浩天周游陆惟
Owner 陆声
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