US 8,765,039 B1Granted

Implantable micro-textured scar inducing ePTFE structures

OwnerWalter J. Ledergerberinventor

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Abstract

Bio-implantable textured tubular and sheet structures of un-sintered ePTFE are described. Such micro-textured structures stimulate robust development of beneficial bio-integrative scar attachment to adnexal soft tissues. Methods for texturing one side of an un-sintered extruded ePTFE tube or sheet are also described. A select length of tubing of any thickness or diameter is applied over a matching mandrel and adhesively stabilized thereon by applying intense suction. The texture is made by “RIGDA tooling” into the wall thickness of the material and by removing undesired material by distraction and avulsion tooling and methods assisted by vibration, leaving intact the finished product. Disclosed is an implantable, non-attached, enveloping, conforming and supportive drainage cover for breast and other soft implants. The drainage cover has numerous through and through cut lucencies which allow for liberal ingress and egress of interstitial biologic fluids enabling efficient drainage postoperatively, especially under the influence of active wound suction.

Claims6

Dependent claims

A method for texturizing an implantable tube for implantation in a body, the tube being an extruded ePTFE tube, the tube having a first inner surface and a second outer surface, the tube having a thickness dimension between the first inner surface and the second outer surface, the second outer surface being textured to promote body tissue bio-integration into the second surface, the second outer surface being textured by the process comprising the steps of:

providing a mandrel sized to receive the inner surface of the tube, the mandrel having a plurality of holes to couple the inner surface of the tube to a vacuum space,
releasably affixing the first inner surface to the mandrel by application of a vacuum to the vacuum space,
contacting an active rotary gouge to the second outer surface to remove material from the tube, at least including gouging material in the thickness dimension from the second surface toward the first surface, thereby separating the gouged material from the tube, thereby
forming an irregularly configured second outer surface, the outer surface having resultant irregular voids,
removing the gouged material from the textured second surface,
moving the rotary gouge and mandrel relative to one another, and
discontinuing application of the vacuum and removing the texturized tube from the mandrel.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/275,018Filed 17 Oct 2011 · us provisional application
Priority: 29 Oct 2010
Granted: 1 Jul 2014
Term ends: Not estimatedThe source records don’t support an estimate.

Classification20 codes

A61M 27/002
Drainage appliance for wounds or the like , i.e. wound drains, implanted drains: implant devices for drainage of body fluids from one part of the…
A61F 2/0077
Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting…:…
A61F 2/12
Prostheses implantable into the body: mammary prostheses
A61L 27/50
Materials for grafts or prostheses or for coating grafts or prostheses: materials characterised by their function or physical properties , e.g.…