Needle apparatus

Details Needle apparatus Needle apparatus

A - Human Necessities

61

M

A61M 5/50 (2006.01) A61B 10/00 (2006.01) A61B 17/34 (2006.01) A61M 5/158 (2006.01) A61M 25/06 (2006.01)

Patent

CA 2501209

A needle apparatus having a thin walled sleeve (28) and a tubular needle (14) closely engaged by the sleeve (28). The needle (12) has a sharp point (14) which initially extends from the sleeve (28). The needle (12) and sleeve (28) are mounted to a hub and are longitudinally moveable relative to one another. The needle (14) is arranged to pierce tissue and the sleeve (28) enters the incision formed by the needle. The needle (12) may then be withdrawn from the tissue by applying traction to the hub. The sleeve (28) is retained in place in the tissue as a result of pressure applied radially by surrounding tissue.

L'invention concerne un appareil à aiguille doté d'un manchon à paroi mince (28) et d'une aiguille tubulaire (14) s'imbriquant étroitement par le biais du manchon (28). Cette aiguille (12) comporte une pointe aiguë (14) qui s'étend initialement du manchon (28). L'aiguille (12) et le manchon (28) sont montés à un embout femelle et ils peuvent se déplacer dans le sens longitudinal l'un par rapport à l'autre. L'aiguille (14) est disposée de manière à percer le tissu et le manchon (28) entre dans l'incision formée par l'aiguille. Ladite aiguille (12) peut ensuite être retirée du tissu par application d'une traction sur l'embout femelle. Le manchon (28) est maintenu en place dans le tissu suite à la pression appliquée radialement par le tissu avoisinant.

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