Bioactive, bioabsorbable surgical composites and devices

Details Bioactive, bioabsorbable surgical composites and devices Bioactive, bioabsorbable surgical composites and devices

A - Human Necessities

61

L

A61L 31/12 (2006.01) A61L 27/44 (2006.01) A61L 27/56 (2006.01) A61L 31/14 (2006.01)

Patent

CA 2342894

The invention relates to bioactive, biocompatible, bioabsorbable surgical composites and devices, such as pins, screws, plates, tacks, bolts intramedullary nails, suture anchors, staples or other devices which are applied in bone-to-bone, soft tissue-to-bone or soft tissue-to-soft tissue fixation or in fixation of bioabsorbable and/or biostable implants in, and/or on, bone or soft-tissue, which composites and devices are fabricated of bioabsorbable polymers, copolymers or polymer alloys that are self-reinforced and contain ceramic particles or reinforcement fibres and porosity. Typical example is crushed particles of bioactive glass spheridized by flame spraying used to form a composite with poly (L/DL) lactide which is then extruded and then reinforced by uniaxial die-drawing.

L'invention porte sur des composites bioactifs, bioabsorbables à usage chirurgical et sur des dispositifs tels que des aiguilles, vis, plaques, petits clous, boulons, clous intramédulaires, ancrages de sutures, agrafes et autres, utilisés pour des liaisons os/os, tissu mou/os, tissu mou/tissu mou, ou pour la fixation d'implants bioabsorbables et/ou biostables dans et/ou à des os ou des tissus mous. Lesdits composites et dispositifs, faits de polymères bioabsorbables, d'alliages de polymères ou de polymères autorenforcés, contiennent des particules céramiques des fibres de renfort, et des parties poreuses. Un exemple type a trait à des particules écrasées de verre bioactif rendues sphériques par projection dans la flamme et servant à former un composite avec un polyacide (L/DL) qui est extrudé puis renforcé par étirage uniaxial sur filière.

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