Resorbable, macro-porous, non-collapsing and flexible membrane barrier for skeletal repair and regeneration
US5919234A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 1996 |
| Grant date | Jul 6, 1999 |
| Priority date | — |
| Expiry date | Aug 19, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L2300/414
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A resorbable, flexible implant in the form of a continuous macro-porous sheet is disclosed. The implant is adapted to protect biological tissue defects, especially bone defects in the mammalian skeletal system, from the interposition of adjacent soft tissues during in vivo repair. The membrane has pores with diameters from 20 microns to 3000 microns. This porosity is such that vasculature and connective tissue cells derived from the adjacent soft tissues including the periosteum can proliferate through the membrane into the bone defect. The thickness of the sheet is such that the sheet has both sufficient flexibility to allow the sheet to be shaped to conform to the configuration of a skeletal region to be repaired, and sufficient tensile strength to allow the sheet to be so shaped without damage to the sheet. The sheet provides enough inherent mechanical strength to withstand pressure from adjacent musculature and does not collapse.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.