Atlantoaxial lateral mass joint replacement prosthesis

A joint replacement and joint technology, applied in the directions of joint implants, joint implants, spinal implants, etc., can solve the problems of articular surface destruction, infection, loss of atlantoaxial rotation movement, etc., to ensure the effectiveness, Guaranteed quality of life effect

Pending Publication Date: 2022-04-26
郝定均
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Lateral mass fractures caused by trauma, especially the fracture and collapse of the articular surface of the axis, congenital dysplasia of bones and joints, and rheumatic and immune diseases seriously affect the stability and incorporation of the atlantoaxial joint. The mainstream within the range is to perform posterior fixation and fusion between the atlantoaxial joint or the pivot-occipital, which eventually loses the rotation of the atlantoaxial or even the flexion and extension of the atlas, which seriously affects the quality of life of the patient.
[0003] The current patent number is CN201410082867.6 bionic low-friction artificial atlantodental joint. This joint is designed to be placed from the oropharynx. Because the oropharynx is more colonized by bacteria, it is easy to cause postoperative

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  • Atlantoaxial lateral mass joint replacement prosthesis
  • Atlantoaxial lateral mass joint replacement prosthesis
  • Atlantoaxial lateral mass joint replacement prosthesis

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Embodiment Construction

[0028] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0029] It should be noted that when an element is referred to as being “disposed on” another element, it may be directly on the other element or there may also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may a...

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Abstract

The invention discloses an atlantoaxial lateral mass joint replacement prosthesis. The prosthesis comprises an upper lateral mass joint body and a lower lateral mass joint body, the upper lateral mass joint body is provided with a first screw used for being fixed to a first cervical vertebra atlas bottom lateral mass, and the lower lateral mass joint body is provided with a second screw used for being fixed to a second cervical vertebra atlas top lateral mass. Main bodies of the upper lateral mass joint body and the lower lateral mass joint body are arranged between the first cervical vertebra atlas and the second cervical vertebra atlas, and the contact parts of the upper lateral mass joint body and the lower lateral mass joint body form spherical contact.

Description

technical field [0001] The invention relates to the technical field of orthopedic surgery, in particular to an atlantoaxial mass joint replacement prosthesis. Background technique [0002] The atlantoaxial joint is composed of the first cervical atlas and the second cervical axis, and consists of 3 independent joints, namely, 2 atlantoaxial lateral mass joints and 1 atlantoaxial median joint. The movement of the atlantoaxial joint is to rotate the odontoid process as the vertical axis, so that the head and the atlas can rotate around the odontoid process. Lateral mass fractures caused by trauma, especially the fracture and collapse of the articular surface of the axis, congenital dysplasia of bones and joints, and rheumatic and immune diseases seriously affect the stability and incorporation of the atlantoaxial joint. The mainstream within the range is to perform posterior fixation and fusion between the atlantoaxial joint or the pivot-occipital, so that the atlantoaxial ro...

Claims

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Application Information

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IPC IPC(8): A61F2/44A61F2/30
CPCA61F2/44A61F2/4455A61F2/30A61F2002/30754A61F2002/30649A61F2002/30433
Inventor 郝定均张海平
Owner 郝定均
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