Anti-dislocation artificial temporomandibular joint prosthesis

A temporomandibular joint and prosthesis technology, applied in the field of anti-dislocation artificial temporomandibular joint prosthesis, can solve problems such as sagging, dislocation out of the joint socket, the artificial joint prosthesis and the muscle cannot form re-attachment, etc., to expand the scope of application, Improve the effect of use

Pending Publication Date: 2021-08-27
SHANGHAI NINTH PEOPLES HOSPITAL SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an anti-dislocation artificial temporomandibular joint prosthesis, which can effectively solve the problem that the artificial joint prosthesis and muscles cannot form reattachment, thus sagging and dislocating out of the joint socket.

Method used

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  • Anti-dislocation artificial temporomandibular joint prosthesis
  • Anti-dislocation artificial temporomandibular joint prosthesis
  • Anti-dislocation artificial temporomandibular joint prosthesis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] see Figure 1-9 According to an embodiment of the present invention, an anti-dislocation artificial temporomandibular joint prosthesis includes a glenoid prosthesis 1 and a slider body 2 slidingly connected with the glenoid prosthesis 1, and also includes a Mandibular ramus prosthesis with rolling connection3.

[0033] The glenoid prosthesis 1 includes the glenoid socket 5 arranged on both sides thereof, the glenoid base 4 arranged above the glenoid socket 5 on one side, and the glenoid socket 5 arranged between the two glenoid sockets 5 The chute 7 in between, the chute supporting surfaces 8 arranged on both sides of the bottom of the chute 7, and the front end wall 9 arranged at one end of the chute.

[0034] The slider body 2 includes snap wings 10 arranged on both sides thereof, and a spherical concave surface 12 arranged at the bottom of the slider body 2 .

[0035] The mandibular ramus prosthesis 3 includes a condyle head 13, a condyle neck 14 fixedly connected ...

Embodiment 2

[0039] 6-8 base screw holes 6 with a diameter of 2.2-2.5 mm are uniformly arranged on the base of the glenoid fossa 4 to ensure that the connection between the base of the glenoid fossa 4 and the zygomatic arch does not loosen and has sufficient rigidity and strength 10-13 retention handle screw holes 16 with a diameter of 4.3-4.5 mm are evenly arranged on the mandibular ramus retention handle 15 to ensure multi-point rigid connection between the mandibular ramus retention handle 15 and the mandibular ramus , with sufficient rigidity and strength.

Embodiment 3

[0041] The glenoid prosthesis 1 is made of ultra-high molecular polyethylene polymer, which has good corrosion resistance, anti-scaling, anti-aging, and wear resistance. The glenoid base 4 and the glenoid socket 5 are The one-piece structure has a simple structure and ensures the rigidity and strength requirements of the glenoid prosthesis 1 .

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Abstract

The invention discloses an anti-dislocation artificial temporomandibular joint prosthesis. The prosthesis comprises a glenoid fossa prosthesis and a sliding block body in sliding connection with the glenoid fossa prosthesis, and further comprises a mandibular branch prosthesis in rolling connection with the sliding block body. The glenoid fossa prosthesis comprises glenoid fossa parts arranged on the two sides of the glenoid fossa prosthesis, a glenoid fossa base part arranged above a glenoid fossa part on one side, a sliding groove formed between the two glenoid fossa parts, sliding groove supporting faces arranged on the two sides in the bottom of the sliding groove, and a front end wall arranged at one end of the sliding groove. According to the technical scheme, the sliding groove 7 in the lower ends of the glenoid fossa parts 5 is used for clamping and supporting the sliding block body 2 with a clamping wing 10, and a spherical concave surface 12 at the lower end of the sliding block body 2 with the clamping wing 10 clamps a condylar process head 13, so that the problems that the mandibular branch prosthesis of the artificial temporomandibular joint prosthesis droops and is dislocated out of the glenoid fossa due to muscle loss and insufficient adhesive force are solved, the use effect is improved, and the application range is expanded.

Description

technical field [0001] The invention relates to the field of motorcycles, in particular to an anti-dislocation artificial temporomandibular joint prosthesis. Background technique [0002] Temporomandibular joint disease is one of the most common diseases in oral and maxillofacial surgery. Its clinical manifestations are abnormal mandibular movement, pain, occlusal instability, limited mouth opening and other dysfunction. Artificial temporomandibular joint prosthesis replacement is the treatment of this disease primary means. The existing artificial temporomandibular joint prosthesis mainly realizes mouth opening and closing and masticatory movement through the glenoid fossa and the mandibular ramus prosthesis, but none of them can realize the bioattachment between muscles and the prosthesis. Therefore, when the lesion is large and more bone and muscle attachments need to be resected during the operation, the mandibular branch of the artificial temporomandibular joint prosth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/30
CPCA61F2/3099A61F2002/30991A61F2002/30654A61F2002/30621
Inventor 何冬梅王增伟
Owner SHANGHAI NINTH PEOPLES HOSPITAL SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE
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