Doppler directed suture ligation device and method

Details Doppler directed suture ligation device and method Doppler directed suture ligation device and method

A - Human Necessities

61

B

A61B 17/00 (2006.01) A61B 17/04 (2006.01) A61B 17/12 (2006.01) A61B 17/32 (2006.01) A61B 17/30 (2006.01) A61B 18/14 (2006.01) A61B 19/00 (2006.01)

Patent

CA 2437475

A ligation device (100) includes a cannula (104) having first and second extendable members (120, 122) and a Doppler wand (140). The Doppler wand (140) permits an anatomical vessel, such as a blood vessel, to be located in close proximity to the distal end of the cannula (104). The extendable members (120, 122) are extendable on two opposite sides of the vessel. A length of ligation material, such as suture material, extends through the first extendable member and is attached to a detachable element (124) mounted to the distal most end of the extendable member. The second extendable member (122) includes a snare (126). The first extendable member (120) includes curved portions which, when the member (120) is extended distally, extend the detachable element (124) into position for the snare (126) so that the snare (126) can grab the loop. Once ensnared, the detachable element (124) is released from the first extendable member (120), which pulls the ligation material around the vessel. The ligation device (100) does not require prior visualization or dissection of the area around the vessel.

L'invention concerne un dispositif (100) de ligature qui comprend une canule (104) comprenant un premier et un second élément (120, 122) extensible et une sonde-tige (140) Doppler. La sonde-tige (140) Doppler permet la localisation d'un vaisseau anatomique tel qu'un vaisseau sanguin à proximité immédiate de l'extrémité distale de la canule (104). Les éléments (120, 122) extensibles peuvent être avancés sur les deux côtés opposés du vaisseau. Une section de matériau de ligature tel qu'un matériau de suture passe à travers le premier élément extensible et est fixé sur un organe (124) détachable monté sur l'extrémité distale de l'élément extensible. Le second élément (122) extensible comprend un attrape-boucle (126). Le premier élément (120) extensible comprend des parties courbées qui, lorsque l'élément (120) se trouve dans sa position d'extension distale, font avancer l'élément (124) détachable pour le mettre en position pour l'attrape-boucle (126), de manière que ce dernier peut saisir la boucle. Une fois la boucle saisie, l'élément (124) détachable est libéré du premier élément (120) extensible ce qui resserre le matériau de ligature autour du vaisseau. Ce dispositif (100) de ligature ne nécessite pas de visualisation ou de dissection préalable de la zone entourant le vaisseau.

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