Method of making a prosthetic bearing element
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United States of America Patent
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N/A
Issued Date -
Sep 30, 2004
app pub date -
Mar 4, 2004
filing date -
Mar 5, 2003
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A method of making a prosthetic polymeric bearing element having a backing made from a 'rigid' polymeric bearing material which has a minimum hardness value of 65 N/mm.sup.2 and which supports a bearing liner having a bearing surface and made from a 'soft' elastomeric polyurethane material having a hardness value of 3.0 to 9.0 N/mm.sup.2 (using machine testing method BS 2782; Pt3 method 365D). The opacity of said bearing liner is arranged to allow the passage of a laser beam through it and the opacity of said backing is arranged to prevent the passage of a laser beam which has passed through the bearing liner. The liner and backing are then bonded together and then the bearing liner and backing are treated with the laser beam to cause an improved interfacial bond by laser welding.
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