Localization device with anchoring barbs

Details Localization device with anchoring barbs Localization device with anchoring barbs

A - Human Necessities

61

B

A61B 19/00 (2006.01) A61B 17/00 (2006.01)

Patent

CA 2371591

A localization device (10) comprising an outer needle cannula (11), an optional inner sleeve cannula (13) and an anchor stylet comprising a plurality of preformed superelastic alloy wires (12). Once the distal portions (14) of the wires (12) are deployed from the ends of the sleeve and needle cannulae, they function as curved barbs (15) projecting outward to anchor the device into tissue, an organ, or a foreign body. A slidable locking member (18), such as a pin vise, can be included over the outer needle cannula for securing the localization device against a template.

Ce dispositif de localisation (10) comprend une canule extérieure à aiguille (11), éventuellement une canule gaine (13), et un stylet d'ancrage comportant plusieurs fils d'alliage préformés et des plus élastiques (12). Une fois déployées et saillant des extrémités des canules gaine et à aiguille, les parties distales (14) des fils (12), en l'occurrence des ardillons recourbés (15) en saillie, ancrent le dispositif dans un tissu, un organe ou un corps étranger. Un élément coulissant de blocage (18), par exemple du type étau à broche, peut encercler la canule extérieure à aiguille de façon à immobiliser le dispositif de localisation contre un gabarit.

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