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Atlantoaxial lateral mass joint fusion appliance

A cage and atlantoaxial technology, applied in the field of atlantoaxial lateral mass joint cage, can solve the problems of inability to correct joint forward tilt, large damage to surrounding structures, large operating space, etc., and achieve good biological performance. Environment, low stress shading effect, good reset effect

Pending Publication Date: 2020-02-07
GENERAL HOSPITAL OF PLA
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, in patients with refractory atlantoaxial dislocation, the atlantoaxial mass slips forward compared with the axial mass, and the joints of the atlantoaxial mass are in an anteverted state. Tilting, or the required operation space is large, the operation is complicated, and the damage to the joint and its surrounding structures is large

Method used

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  • Atlantoaxial lateral mass joint fusion appliance
  • Atlantoaxial lateral mass joint fusion appliance
  • Atlantoaxial lateral mass joint fusion appliance

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Embodiment Construction

[0032] The present invention will be described in detail below with reference to the accompanying drawings and examples. The principles and features of the present invention will be described below in conjunction with the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments can be combined without conflict. The examples given are only for explaining the present invention, not for limiting the scope of the present invention.

[0033] Please refer to Figure 1 to Figure 6 , figure 1 It is a schematic diagram of the three-dimensional shape structure of the first structure of a specific embodiment of the atlantoaxial lateral mass joint fusion device disclosed in the present invention; figure 2 It is a schematic diagram of the three-dimensional shape structure from another angle of the first structure of a specific embodiment of the atlantoaxial lateral mass joint fusion device disclosed in the present inve...

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Abstract

The invention discloses an atlantoaxial lateral mass joint fusion appliance. The atlantoaxial lateral mass joint fusion appliance comprises a first structure of which the temperature is 20 DEG C or above and a second structure of which the temperature is 0-8 DEG C, wherein the second structure is formed by the compressing of the first structure in the same direction; when the temperature is raisedto 20 DEG C or above under the second structural state, the second structure can be restored to the first structure; and the outside outline of the first structure and the outside outline of the second structure adopt a polyhedron-shaped structure or a curved surface body-shaped structure. The atlantoaxial lateral mass joint fusion appliance disclosed by the invention is transplanted from the rear part of an atlantoaxial lateral mass joint, and during transplanting, large operation space is not needed, so that the operation is simple and convenient, damage to joints and surrounding structuresis low, the resetting effect is good, and the surgery curative effects can be notably improved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an atlantoaxial lateral mass joint fusion device. Background technique [0002] Atlantoaxial dislocation refers to pathological changes in which the atlas and axis articular surfaces lose their normal alignment due to congenital malformations, trauma, tumors, rheumatoid arthritis and other factors, resulting in joint dysfunction and nerve compression. Atlantoaxial dislocations can be divided into reversible dislocations, irreducible dislocations and irreducible dislocations according to the resetting properties. Among them, the treatment of irreducible dislocations is a difficult point, and it is also a research hotspot in recent years. The classic treatment of irreversible atlantoaxial dislocation is the anterior transoral odontoid grinding, and later evolved transoral odontoid ligament release assisted by posterior occipitocervical or atlantoaxial fixation. With the de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/44
CPCA61F2/30767A61F2/30942A61F2/447A61F2002/30769A61F2002/30985A61F2310/00023
Inventor 余新光郝世杰宗睿万明杜宝鹏
Owner GENERAL HOSPITAL OF PLA
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