Combined multiple ligating band dispenser and sclerotherapy...

Details Combined multiple ligating band dispenser and sclerotherapy... Combined multiple ligating band dispenser and sclerotherapy...

A - Human Necessities

61

B

A61B 17/12 (2006.01) A61B 17/34 (2006.01)

Patent

CA 2174540

A ligating band dispenser (305) for dispensing a plurality of 1igating bands (310, 311, 312) individually during a sequence of operations for a ligating instrument. Interfitted housing (306) and piston (307) segments support a plurality of ligating bands at axially spaced locations. Retraction of the piston segment dispenses on ligating band and shifts the remaining ligating bands distally and axially. After retraction, the piston is biased forward so a next retraction dispenses another ligating band. A sclerotherapy needle (330) mounts in a sheath (320) that connects to the piston segment. A physician retracts the sheath to retract the piston. In addition the physician can advance the sclerotherapy needle through the sheath to administer a sclerotherapy agent as an alternative to ligating a lesion.

Un distributeur (305) de bandes de ligature permet de distribuer individuellement les bandes (310, 311, 312) selon l'invention pendant une séquence de fonctionnement d'un instrument de ligature. Un boîtier (306) et des segments de piston (307) emboîtés supportent plusieurs bandes de ligature espacées dans le sens axial. La rétraction d'un segment de piston entraîne la distribution d'une bande de ligature et le décalage des bandes restantes vers l'extrémité distale de l'instrument et axialement. Après cette rétraction, le piston est poussé vers l'avant de façon qu'une rétraction ultérieure entraîne la distribution d'une autre bande de ligature. Une aiguille (330) d'injection sclérosante est montée dans une gaine (320) raccordée au segment du piston. Un médecin peut rétracter le piston en même temps que la gaine. De plus, il peut faire avancer l'aiguille d'injection sclérosante dans la gaine pour administrer un agent sclérosant destiné à remplacer la ligature d'une lésion.

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