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US 5,348,788 AGranted
Mesh sheet with microscopic projections and holes
AssigneeInterpore Orthopaedics, Inc.
InventorEugene W. White
Life of this patent
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Abstract
A porous mesh for use in forming articles comprising a network of pores and protrusions. The porous mesh has a specifically delineated mesh structure having a pore/protrusion size between 25 and 1000 microns and the pore structure is based on a uniform distribution of pores and protrusions on a cast or molded sheet wherein said pores and protrusions have similar effective diameters. The resulting material is advantageously applied to several bio-medical applications, including reconstructive surgery and arterial replacement
Claims4
A non-woven porous mesh in sheet form, said mesh comprising:
- a continuous sheet having a substantially uniform thickness between opposite sides;
- a series of openings extending through and from one to the other side of the sheet, said openings being distributed in a substantially uniform pattern throughout a two-dimensional area of the sheet;
- and a series of raised protrusions extending substantially normal to and outwardly away from one side of said sheet, wherein the protrusions are of substantially uniform height and are distributed in a substantially uniform pattern corresponding to said pattern of openings but offset therefrom forming a topographical surface wherein said openings have an effective diameter of about 25 to 1000 .mu.m, said openings have essentially the same effective diameter of said protrusions and are respectively centered within a rectangle defined by four adjacent protrusions within the body of said mesh.
Dependencies are inferred from the claim text.