University of South Florida

Shriners Hospital for Children

Francis Moussy

Thomas J Koob

Young Min Ju

Bazhang Yu

The subject invention concerns non-degradable three dimensional porous collagen scaffolds and coatings. These scaffolds can be prepared around sensors for implantation into a body. A specific embodiment of the invention concerns implantable glucose sensors. Sensors comprising a collagen scaffold of the invention have improved biocompatibility by minimizing tissue reactions while stimulating angiogenesis. The subject invention also concerns methods for preparing collagen scaffolds of the invention. The subject invention also concerns sensors that have a collagen scaffold of the invention around the exterior of the sensor.

Collagen scaffolds, medical implants with same and methods of use

The present invention provides a polymer membrane enhanced with cured epoxy resin for use as the outer membrane of biosensors. The membrane includes approximately 30-80% epoxy resin adhesives, 10-60% polymer such as poly(vinyl chloride), polycarbonate and polyurethane and 0-30% plasticizers and 5-15% surface modifier reagent such as polyethylene oxide-containing block copolymers. Utilizing the polymer membrane of the present invention, a three-layered sensing element has been developed. This sensing element will be particularly useful for miniaturized biosensors used for in vitro blood measurements or for continuous in vivo monitoring such as implantable biosensors. This element includes an enzyme layer, an interference-eliminating layer and the novel polymer member of the present invention as the outer polymer layer. This novel sensing element shows excellent response characteristics in solutions and has an extremely long lifetime. This technology is particularly useful for improving the lifetime of implantable biosensors.

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Uxbridge, United Kingdom

Francis Moussy