Joint prosthesis
First Claim
Patent Images
1. A joint prosthesis kit comprising(a) a joint prosthesis for insertion in an intramedullary cavity;
- said joint prosthesis including(1) an adapter having a tubular nipple and securing means;
said tubular nipple being capable of supporting a joint bearing element;
(2) a hollow, flexible prepreg member of hardenable material attached to said adapter by said securing means; and
(b) a hollow, inflatable fluid-impervious pressing means being receivable in said prepreg member and being removable therefrom;
said prepreg member, after introduction into said intramedullary cavity, is, by inflating said fluid-impervious pressing means inside said prepreg member by introduction of a fluid thereinto through said nipple, expandable against the surface of the intramedullary cavity such that the prepreg member conforms to the surface of the intramedullary cavity where, upon hardening, said prepreg member forms a hard shell constituting a sole anchoring member of the prosthesis.
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Accused Products
Abstract
A joint prosthesis for insertion in a bone cavity comprises an adapter; a hollow, flexible prepreg member of hardenable material secured to the adapter; a hollow inflatable pressing member disposed in the prepreg member; and an arrangement for introducing fluid into the pressing member for inflating the same for causing the prepreg member to conform to the walls of the bone cavity.
383 Citations
22 Claims
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1. A joint prosthesis kit comprising
(a) a joint prosthesis for insertion in an intramedullary cavity; - said joint prosthesis including
(1) an adapter having a tubular nipple and securing means;
said tubular nipple being capable of supporting a joint bearing element;(2) a hollow, flexible prepreg member of hardenable material attached to said adapter by said securing means; and (b) a hollow, inflatable fluid-impervious pressing means being receivable in said prepreg member and being removable therefrom;
said prepreg member, after introduction into said intramedullary cavity, is, by inflating said fluid-impervious pressing means inside said prepreg member by introduction of a fluid thereinto through said nipple, expandable against the surface of the intramedullary cavity such that the prepreg member conforms to the surface of the intramedullary cavity where, upon hardening, said prepreg member forms a hard shell constituting a sole anchoring member of the prosthesis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
- said joint prosthesis including
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16. A joint prosthesis for insertion in an intramedullary cavity comprising
(a) an adapter capable of supportng a joint bearing element; -
(b) a hollow, flexible prepreg member of hardenable material clampingly connected to said adapter; and (c) means for introducing a fluid into the hollow prepreg member for expanding said prepreg member against the surface of the intramedullary cavity such that the prepreg member conforms to the surface of the intramedullary cavity where, upon hardening, said prepreg member forms a hard shell constituting a sole anchoring member of the prosthesis. - View Dependent Claims (17)
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18. A joint prosthesis inserted in an intramedullary cavity having an inner surface comprising
(a) a hardened hollow prepreg member conforming closely to the inner surface of the intramedullary cavity and forming a shell constituting a sole anchoring member for the joint prosthesis; - said shell having an opening surrounded by a marginal shell portion;
(b) an adapter situated in a zone of said marginal shell portion and including (1) means for securing the adapter to the marginal shell portion; (2) a tubular, bilaterally open-ended nipple extending through said opening into said shell and having a terminal part projecting through said opening outwardly from said shell;
said terminal part of said nipple being capable of supporting a joint bearing element. - View Dependent Claims (19, 20)
- said shell having an opening surrounded by a marginal shell portion;
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21. A joint prosthesis inserted in an intramedullary cavity having an inner surface, obtained by the process comprising the following steps:
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(a) introducing a hollow, flexible prepreg member of hardenable material into the intramedullary cavity; (b) inflating the prepreg member by a fluid introduced through a nipple affixed to said prepreg member for expanding said prepreg member to cause it to conform closely to said inner surface of said cavity; and (c) hardening said prepreg member to transform the flexible prepreg member into a hard shell closely conforming to said inner surface;
said shell constituting a sole anchoring member for the joint prosthesis. - View Dependent Claims (22)
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Specification