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US 9,427,494 B2Granted
Fibre-based surgical implant and method of manufacture
AssigneeInternational Life Sciences, LLC
InventorsAnders Persson, Eugenio Ferrario
Life of this patent
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Abstract
A fiber-based surgical implant stabilized against fraying, includes a thermally crimped flat-knitted fabric of a biocompatible, optionally biodegradable, polymer material having a glass transition temperature or other thermally induced secondary conformational mobility threshold in the temperature range of from 20° C. to +170° C. Also disclosed is a corresponding fabric and methods of producing the implant and the fabric.
Claims29
A fibre-based intra-articular spacer stabilized against fraying, comprising:
- two or more layers of flat-knitted thermally shrinkable poly(urethane urea) fabric joined to each other, wherein the two or more layers of flat-knitted poly(urethane urea) fabric each have a warp and a weft and the two or more layers of flat-knitted poly(urethane urea) are crimped in a direction either along the weft or perpendicular to the weft;
- one or more interlaced sections separated by one or more non-interlaced sections of the spacer disposed equidistantly along the intra-articular spacer, wherein the interlaced section extends over the two or more layers of flat-knitted thermally shrinkable poly(urethane urea) fabric;
- a first cut edge at an area of abutment between the one or more interlaced sections and the one or more non-interlaced sections;
- and
- a second cut edge formed only in the non-interlaced section and in less than all of the two or more layers of flat-knitted thermally shrinkable poly(urethane urea) fabric.
2 more elements
A fibre-based intra-articular spacer surgical implant stabilized against fraying, comprising:
- two or more layers of flat-knitted thermally shrinkable poly(urethane urea) fabric joined to each other, wherein the two or more layers of flat-knitted poly(urethane urea) fabric each have a warp and a weft and the two or more layers of flat-knitted poly(urethane urea) are crimped in a direction either along the weft or perpendicular to the weft;
- an interlaced section and a non-interlaced section of the spacer, wherein the spacer has a generally T-shaped transverse cross-sectional profile having a central body and wings, wherein the interlaced section forms the central body and the non-interlaced section forms the wings, such that a first wing is formed of a first layer of the non-interlaced section and a second wing is formed of a second layer of the non-interlaced section;
- and
- wherein the dimensions of the central body is adapted to fit within a corresponding depression at an implant site and is amenable for fastening by a glue or sutures.
1 more element
Dependencies are inferred from the claim text.