Medical retrieval basket with legs shaped to enhance capture...

A - Human Necessities – 61 – B

Patent

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Details

A61B 17/22 (2006.01)

Patent

CA 2272869

A medical retrieval device, and related method, uses a basket formed by one or more legs to retrieve material such as calculi. At least one of the legs has at least an inner and an outer surface. The outer surface is an atraumatic surface such as a curved surface. The atraumatic surface can include one or more radii. The inner surface can be flat such that the leg has a D-shaped cross section. Other shapes are possible for the inner surface including a pointed shape that enhances the basket's stone crushing or breaking ability. The inner surface, whatever its shape, can have a rough surface (e.g., serrated, etched, toothed, etc.) for further enhancing the basket's ability to capture stones and other calculi.

La présente invention concerne un dispositif d'extraction médical et un procédé associé dans lesquels un panier formé par un ou plusieurs bras est utilisé pour extraire des matières telles que des calculs. L'un des bras au moins comprend au moins une surface interne et une surface externe. La surface externe est constituée par une surface atraumatique telle qu'une surface incurvée, qui peut comprendre un ou plusieurs arrondis. La surface interne peut être plate de façon que le bras présente une coupe transversale en forme de D. La surface interne peut présenter d'autres formes, y compris une forme pointue qui améliore la capacité du panier à écraser ou à casser les calculs. La surface interne, quelle que soit sa forme, peut présenter des irrégularités (elle peut être dentelée, gravée, crantée, par exemple) afin de renforcer davantage la capacité du panier à saisir les calculs et autres matières solides.

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