Gi Supply

Boston Scientific Scimed, Inc.

Mary Jo Timm

Patrick Lee

Robert G Whalen

Amy A Cameron

Provided is a tissue staining composition containing carbon particles having a mean particle diameter less than 0.3 μm in diameter (optionally less than 0.2 μm in diameter) together with one or more agents that maintain the carbon particles in suspension (for example, an anti-settling agent and/or surfactant). In certain circumstances, the anti-settling agent may also have mucoadhesive properties. The tissue staining composition is visually dark and does not disperse rapidly when introduced into regions of tissue of interest making it ideal for marking the regions that can be visualized clearly and over prolonged periods of time via, for example, direct visualization, endoscopic or laparoscopic inspection. The invention also provides methods of making and using the tissue staining composition for marking regions of tissue of interest, for example, gastrointestinal tissue, as well as other tissues.

Tissue stain and use thereof

Provided is a tissue staining composition containing carbon particles having a mean particle diameter less than 0.3 &#x3bc;m in diameter (optionally less than 0.2 &#x3bc;m in diameter) together with one or more agents that maintain the carbon particles in suspension (for example, an anti-settling agent and/or surfactant). In certain circumstances, the anti-settling agent may also have mucoadhesive properties. The tissue staining composition is visually dark and does not disperse rapidly when introduced into regions of tissue of interest making it ideal for marking the regions that can be visualized clearly and over prolonged periods of time via, for example, direct visualization, endoscopic or laparoscopic inspection. The invention also provides methods of making and using the tissue staining composition for marking regions of tissue of interest, for example, gastrointestinal tissue, as well as other tissues.

A method is provided for altering a drug release profile of a coating of a medical device by increasing a surface area of the coating of the medical device. The method may include indenting the coating using a crimping apparatus, a rolling apparatus, or a clamping device. The method may alternatively or additionally include changing a chemical composition of at least one coating component to increase a roughness of a texture of the coating, and/or drying or partially drying the coating before the coating impacts the medical device.

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Littleton, MA, United States of America

Mary Jo Timm