Joint prosthesis
First Claim
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1. A joint prosthesis adapted to permanently replace a natural articulated joint between distal and proximal bone shafts comprising:
- distal prosthesis means for connecting said joint prosthesis to the distal bone shaft;
proximal prosthesis means for connecting said joint prosthesis to the proximal bone shaft, said distal and proximal prosthesis means including at least one longitudinally extending mounting member, each of the distal and proximal bone shafts having periosteal parts thereon, and at least one of the distal and proximal bone shafts including at least one generally transverse bore therein;
articulated prosthetic joint means having a positive interlocking connector means arranged between said distal prosthesis means and said proximal prosthesis means for hingedly connecting said distal prosthesis means to said proximal prosthesis means; and
securing means for securing said at least one longitudinally extending mounting member of said distal and proximal prosthesis means to the periosteal parts of respective ones of the distal and proximal bone shafts, wherein said at least one longitudinally extending member is sized to extend a greater distance along the respective distal or proximal bone shafts than any other portion of joint prosthesis, said at least one of said distal and proximal prosthesis means associated with a corresponding one of the distal and proximal bone shafts having at least one passageway extending therethrough for alignment with the at least one generally transverse bore, said securing means including anchoring means for insertion at least partially within the at least one generally transverse bore and structured to extend through said at least one passageway whereby said securing means can be permanently fixed to the corresponding one of the distal and proximal bone shafts.
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Abstract
A joint prosthesis is disclosed. The joint prosthesis is preferably used for small joints, such as finger joints, and comprises at least one distal prosthesis element and at least one proximal prosthesis element. A joint is arranged between the distal and proximal prosthesis elements to allow for articulated movement therebetween. The distal and proximal prosthesis elements are secured to corresponding distal and proximal bone shafts.
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Citations
20 Claims
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1. A joint prosthesis adapted to permanently replace a natural articulated joint between distal and proximal bone shafts comprising:
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distal prosthesis means for connecting said joint prosthesis to the distal bone shaft; proximal prosthesis means for connecting said joint prosthesis to the proximal bone shaft, said distal and proximal prosthesis means including at least one longitudinally extending mounting member, each of the distal and proximal bone shafts having periosteal parts thereon, and at least one of the distal and proximal bone shafts including at least one generally transverse bore therein; articulated prosthetic joint means having a positive interlocking connector means arranged between said distal prosthesis means and said proximal prosthesis means for hingedly connecting said distal prosthesis means to said proximal prosthesis means; and securing means for securing said at least one longitudinally extending mounting member of said distal and proximal prosthesis means to the periosteal parts of respective ones of the distal and proximal bone shafts, wherein said at least one longitudinally extending member is sized to extend a greater distance along the respective distal or proximal bone shafts than any other portion of joint prosthesis, said at least one of said distal and proximal prosthesis means associated with a corresponding one of the distal and proximal bone shafts having at least one passageway extending therethrough for alignment with the at least one generally transverse bore, said securing means including anchoring means for insertion at least partially within the at least one generally transverse bore and structured to extend through said at least one passageway whereby said securing means can be permanently fixed to the corresponding one of the distal and proximal bone shafts. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A joint prosthesis adapted to permanently replace a natural articulated joint between distal and proximal bone shafts comprising:
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distal prosthesis means for connecting said joint prosthesis to the distal bone shaft; proximal prosthesis means for connecting said joint prosthesis to the proximal bone shaft, said distal and proximal prosthesis means including at least one longitudinally extending mounting member, each of the distal and proximal bone shafts having periosteal parts thereon and including at least one generally transverse bore therein; articulated prosthetic joint means having a positive interlocking connector means arranged between said distal prosthesis means and said proximal prosthesis means for hingedly connecting said distal prosthesis means to said proximal prosthesis means; and securing means for securing said at least one longitudinally extending mounting member of said distal and proximal prosthesis means to the periosteal parts of respective ones of the distal and proximal bone shafts, wherein said at least one longitudinally extending member is sized to extend a greater distance along the respective distal or proximal bone shafts than any other portion of joint prosthesis, said distal and proximal prosthesis means each having at least one passageway extending therethrough for alignment with respective ones of the generally transverse bores for receiving at least a portion of said securing means therein, said securing means including anchoring members for insertion at least partially within the generally transverse bores of the distal and proximal bone shafts and extending through respective ones of said passageways of said distal and proximal prosthesis means. - View Dependent Claims (17, 18, 19, 20)
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Specification