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US4955907A Expired / Lapsed US ⏱️ 0.0 years remaining

Implantable prosthetic device

Assignee: Individual
•
Filing: 1989-03-20
•
Granted: 1990-09-11
•
Expires: 2009-03-20
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Abstract

Abstract An implant and coverings for an implant for use in the human body are disclosed. Coverings for implants are constructed to present a biocompatible surface to the body and to provide a textured surface which serves to disorganize scar tissue which forms around the implant. Filaments of expanded PTFEe are attached to a stretch fabric backing in a loose weave configuration. Silicone molded in geometric patterns may be employed to present a textured surface. Compressive structures may be beneficially used on the surface of the implant or in the interior of the implant. Foam is one such compressive structure. Hexagonally shaped compressive cells containing fluid, gas, gel or foam are adapted to receive an insert which contains an outer biocompatible coating. A valve or port is provided to communicate between the cell and the body. Expansions means may be provided to expand the implant in a desired direction.

Inventors

  • 👤 Walter J. Ledergerber

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 13:30
CPC Classifications
A; A61; A61L; A61L27/00; A61L27/28; A61L27/34; A61F; A61F2/00; A61F2/0077; A61F2/02; A61F2/12

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 74 words
A biocompatible textured covering for an implant for implanting into the body comprising, a plurality of individual polygonal shaped PTFEe cups, each of said cups having a bottom surface and raised side walls, said cups being disposed such that neighboring cups have adjacent side walls, and a biocompatible material disposed on the bottom surface of the PTFEe cups whereby said material is capable of resisting the formation of spherical scar contracture about the implant.
Claim 2
Dependent Claim 74 words
A biocompatible textured covering for an implant for implanting into the body comprising, a plurality of individual polygonal shaped PTFEe cups, each of said cups having a bottom surface and raised side walls, said cups being disposed such that neighboring cups have adjacent side walls, and a biocompatible material disposed on the bottom surface of the PTFEe cups whereby said material is capable of resisting the formation of spherical scar contracture about the implant.
Claim 3
Dependent Claim 26 words
The covering for an implant of claim 1 wherein the biocompatible material disposed on the bottom of the PTFEe cups includes a weave of PTFEe filaments.

References Cited (Backward Citations)

US3971381A Cited
US4741941A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1993-09-10 1994-03-12 1994-09-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1997-09-10 1998-03-12 1998-09-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2001-09-10 2002-03-12 2002-09-11 $7700.00 Window Closed / Lapsed

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