Heatless blood vessel harvesting device

A - Human Necessities – 61 – D

Patent

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Details

A61D 1/02 (2006.01)

Patent

CA 2587531

A method and device are disclosed directed at harvesting of vessels, such as arteries and veins, especially as required in vessel grafting procedures. The device and method discloses a cannula-like device that provides, identification, capture, manipulation, hemostasis and cleavage of branch vessels from the harvested vessel without need for further devices. In certain preferred embodiments of the disclosed method and device, the disclosed harvesting device achieves branch vessel cleavage and hemostasis without the use of heat producing means such as cautery. In addition, certain embodiments utilize a clip/coil magazine technology so as to enable severance and hemostasis of multiple branch vessels without need for removal of the device from the surgical site. Further embodiments disclose the incorporation and use of irrigants containing CO2, as well as other agents capable of stimulate release of nitric oxide from vascular endothelium are applied to subject vessels so as to enhance the viability of vessels to be harvested as graft material.

L'invention concerne un procédé et un dispositif de prélèvement des vaisseaux, tels que les artères et les veines, notamment dans des opérations de greffe de vaisseaux. On décrit un dispositif de type canule qui assure l'identification, la saisie, la manipulation, l'hémostase et le clivage de vaisseaux annexes à partir du vaisseau de prélèvement, sans nécessité d'utiliser d'autres appareils. Dans certains modes de réalisation préférés, le dispositif de prélèvement effectue le clivage et l'hémostase des vaisseaux annexes sans utilisation d'un moyen de production de chaleur, tel qu'un cautère. En outre, certains modes de réalisation mettent en oeuvre une technologie des cartouches à chargeur/bobine qui permet la disjonction et l'hémostase de multiples vaisseaux annexes sans nécessité de retirer le dispositif du champ opératoire. D'autres modes de réalisation concernent l'incorporation et l'utilisation d'irrigants contenant CO2, ainsi que d'autres substances pouvant stimuler la libération d'oxyde nitrique depuis l'endothélium vasculaire, et leur application à des vaisseaux cibles, en vue d'améliorer la viabilité des vaisseaux à prélever comme matériau de greffe.

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