Driving inverted tooth type ball socket joint artificial navicular bone

A ball-and-socket joint, navicular technology, applied in the direction of ankle joint, wrist joint, joint implant, etc., to achieve the effect of convenient and simple use, good long-term stability, and good range of motion

Active Publication Date: 2020-12-29
THE AFFILIATED HOSPITAL OF QINGDAO UNIV
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Problems solved by technology

At present, there is still a lack of implants and surgical methods suitable for reconstructing the original scaphoid function and preserving the space and mobility of the radiocarpal joint

Method used

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  • Driving inverted tooth type ball socket joint artificial navicular bone
  • Driving inverted tooth type ball socket joint artificial navicular bone

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Embodiment Construction

[0015] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments described here are only used to explain the present invention, not to limit the present invention.

[0016] Navicular osteonecrosis, collapse, fracture disunion, etc. often lead to symptoms such as wrist joint pain and decreased range of motion. At present, there is still a lack of implants suitable for reconstructing the original scaphoid function and preserving the space and mobility of the radiocarpal joint. In order to solve such problems, the present invention designs an artificial scaphoid bone with an inverted tooth type ball-and-socket joint, which can reconstruct the original scaphoid function, retain the flexion, rotation, and other activities of the radiocarpal joint, reduce the pressure on the ...

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Abstract

The invention provides a driving inverted tooth type ball socket joint artificial navicular bone. The driving inverted tooth type ball socket joint artificial navicular bone is an implant for reconstructing the original navicular bone function and retaining the radiocarpal joint gap and activity, and comprises a navicular bone body and a support body; the navicular bone body has an irregular shapesimilar to the navicular bone of a human body and consists of a head, a body and a tail; and the support body consists of a ball head, a neck and a handle. A ball socket is formed in the position, opposite to the ball head of the support body, of the navicular bone body; the navicular bone body and the ball head form a ball socket joint; the handle is a driving-in type handle, the driving-in typehandle is of a long conical structure with an inverted-tooth-shaped structure and is provided with a rough coating, and the structure is used for implanting the driving inverted tooth type ball socket joint artificial navicular bone into the radiocarpal joint through an implantation instrument, so that the reconstruction of the radiocarpal joint can be realized. According to the structural characteristics of the device, stress can be dispersed, the radiocarpal joint gap is kept, the good mobility of the radiocarpal joint is kept, and the radiocarpal joint is well reconstructed.

Description

technical field [0001] The invention belongs to the technical field of repairing and reconstructing the radiocarpal joint by using an implant body, in particular to an artificial scaphoid of a ball and socket joint driven into inverted teeth. Background technique [0002] Navicular osteonecrosis, nonunion, and delayed union due to trauma, strain, or other causes are clinically difficult problems, resulting in symptoms such as pain and decreased range of motion of the wrist joint. The current treatment methods are mostly scaphoid resection, tendon and other tissue packing, bone graft fusion, etc., with limited effect, which may cause problems such as degeneration of the adjacent carpal bone, reduced range of motion, and narrow space of the radiocarpal joint. At present, there is still a lack of implants and surgical methods suitable for reconstructing the original scaphoid function and preserving the space and mobility of the radiocarpal joint. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/42
CPCA61F2/4261A61F2002/30649A61F2002/30841A61F2002/30904A61F2002/3006A61F2002/30518A61F2002/30362A61F2002/30378A61F2002/4264A61F2002/4289
Inventor 张海宁冷萍
Owner THE AFFILIATED HOSPITAL OF QINGDAO UNIV
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