American Cyanamid Company

Henry Patrick Landi

Vincent Anthony Perciaccante

Marion Douglas Meyers

Dennis F Devereux

The invention is a composite material of two or more biocompatible polymers, at least one of which is polytetrafluoroethylene (PTFE) and one of which is a bioabsorbable polymer. The nonabsorbable PTFE is used in the composite as a reinforcing binder. The reinforcing binder is a network of unsintered, interconnected micro-fibers which are formed, for example, by blending with a thermoplastic polymer vehicle, such as polymethylmethacrylate which is subsequently extracted. The bioabsorbable component is contained within the structure of the PTFE microfibrils. This composite is useful in the repair of mammalian tissue where tissue ingrowth and permanent support is required.

Composite material having absorbable and nonabsorbable components for

The invention is a composite material of two or more biocompatible polymers, at least one of which is polytetrafluoroethylene (PTFE) and one of which is a bioabsorbable polymer. The nonabsorbable PTFE is used in the composite as a reinforcing binder. The reinforcing binder is a network of unsintered, interconnected micro-fibers which are formed, for example, by blending with a thermoplastic polymer vehicle, such as polymethylmethacrylate which is subsequently extracted. The bioabsorbable component is contained within the structure of the PTFE microfibrils. This composite is useful in the repair of mammalian tissue where tissue ingrowth and permenant support is required.

Composite material having absorbable and non-absorbable components for

A composite structure is disclosed having two or more biocompatible polymers. At least one of the polymers is nonabsorbable. The nonabsorbable polymer is extruded into a fiber. The fiber can be fabricated into a textile structure, for example a woven mesh. The nonabsorbable mesh is then encapsulated with at least one bioabsorbable polymer. The composite structure is useful for repairing anatomical defects, for example in a mammalian abdominal wall.

Surgical composite structure having absorbable and nonabsorbable

A counter electrode structure of a transition metal electrochromic compound for use in an electro-optical device, which is useful in control of visible and infrared absorption by windows, in data display devices and the like, typically comprising in sandwich arrangement a pair of electrodes, and disposed therebetween, a layer of transition metal electrochromic compounds and a semi-solid highly conductive sulfuric acid gel electrolyte, one of the electrodes being said counter electrode. The gel exhibits good conductivity, stability and compatibility with the electrochromic layers. The present counter electrode is more efficient and has a longer lifetime.

Process for preparation of an electrode structure containing WO.sub.3

The handling characteristics, including particularly the knot run-down, of synthetic absorbable surgical sutures and tissue drag characteristics are improved by a coating of a lubricating film of a bioabsorbable copolymer having polyoxyethylene blocks and polyoxypropylene blocks, and which bioabsorbable copolymer has a molecular weight such that it is pasty to solid at 25.degree. C.

Absorbable surgical sutures coated with polyoxyethylene-polyoxypropylene

The handling characteristics, including particularly the knot run down and tissue drag characteristics, of non-absorbable surgical sutures are improved by a coating of a lubricating film of a bioabsorbable copolymer having polyoxyethylene blocks and polyoxypropylene blocks, and which bioabsobable copolymer has a molecular weight such that it is pasty to solid at 25.degree. C. This lubricant coating is absorbed in tissue in less than about 48 hours--which results in improved long term knot security.

Non-absorbable surgical sutures coated with

A substantially anhydrous liquid iodophor detergent solution is used as a pre-surgical skin cleansing agent. This substantially anhydrous system in which the iodophor is stabilized by the addition of iodides can be incorporated easily into surgical scrub sponges without the expense, delay, and degradation of sponge material resulting from heating to remove the water of aqueous systems to produce a substantially anhydrous product that will not prematurely hydrolyze and deteriorate during prolonged storage.

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Yorktown Heights, NY, United States of America

Henry Patrick Landi