Articular prosthesis for metacarpus-phalangeal or interphalangeal use

A technology of prosthetics and joints, applied in the direction of finger joints, ankle joints, joint implants, etc., which can solve the problems of joint wear, unsuitable repair and replacement, etc.

Inactive Publication Date: 2006-03-08
ORTHOFIX SRL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, given that there is only a limited area in the bone canal to insert these fixtures, they basically have a simple conical shape, and they are not suitable for a possible prosthetic replacement, which would be required for a worn joint joint

Method used

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  • Articular prosthesis for metacarpus-phalangeal or interphalangeal use
  • Articular prosthesis for metacarpus-phalangeal or interphalangeal use
  • Articular prosthesis for metacarpus-phalangeal or interphalangeal use

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Experimental program
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Embodiment Construction

[0032] Referring now to the drawings, a metacarpal-phalangeal or interphalangeal joint prosthesis according to the present invention is indicated throughout at 10 .

[0033] The prosthesis 10 comprises a first elongate portion or leg bone 12, for example to be connected to a proximal bone, hereafter also indicated as proximal portion or leg bone 12, and a second elongate portion or leg bone 14, for example to be connected to a distal bone , which is hereafter also indicated with the distal portion or femur 14 . As an indication of the size of the prosthesis 10, it may be noted that the typical length of these leg bones 12, 14 is 18 mm.

[0034] In the illustration where the first part 12 is optionally assembled to the distal bone and the second part 14 is assembled to the proximal bone, the prosthesis 10 of the present invention is always of the same type as will be described hereinafter.

[0035] The proximal leg bone 12 and the distal leg bone 14 are connected to each other...

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Abstract

To provide an articular prosthesis (10) for metacarpus-phalangeal or interphalangeal use, by which a treatment for implanting a prosthesis is rapidly and conveniently performed. The articular prosthesis (10) comprises a first shank (12) to be associated to a proximal bone and a second shank (14) to be associated to a distal bone, said two shanks (12, 14) being connected to a half part (13, 15) of an articulated joint respectively, the two half parts (13, 15) being hinged to each other, at least one among the first shank (12) and second shank (14) comprising an expansion insert (22) and expansion means (59) reversibly expanding said insert (22), said expansion means (59) reversibly expanding the insert (22), the expansion means (59) being removably connected to a half part of the articulated joint (16).

Description

technical field [0001] The present invention relates in a broader aspect to a metacarpal-phalangeal or interphalangeal joint prosthesis, which is thus used in arthroplasty, in the reconstruction of different joint components and bone structures, in reconstructing After the muscles, tendons, ligaments, and other soft tissues are constructed, the joint is moved again. Such prostheses are implanted after an injury event or a degenerative joint disease such as rheumatoid arthritis. [0002] In particular, the present invention relates to joint prostheses for reconstructing the joint between a metacarpal and a phalanx or between two phalanges, i.e. essentially comprising a first part or leg bone to be connected to a proximal bone, and a second part to be connected to a distal bone. Two parts or leg bones, the two leg bones are connected to the halves of the articulation joint respectively, the two halves are hinged to each other. Background technique [0003] Several joint pros...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/42A61L27/00A61F2/00A61F2/30
CPCA61F2002/30604A61F2220/0025A61F2002/30624A61F2002/30405A61F2002/4243A61F2002/30507A61F2310/00023A61F2002/30332A61F2220/0033A61F2/4241A61F2002/30822A61F2002/30579A61F2310/00796A61F2002/30596A61F2002/4251A61F2002/30594
Inventor 达尼埃莱·文图林尼路易吉·罗西毛里齐奥·科拉迪
Owner ORTHOFIX SRL
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