Ultrasonic trocar assembly

Details Ultrasonic trocar assembly Ultrasonic trocar assembly

A - Human Necessities

61

B

A61B 17/34 (2006.01) A61B 17/32 (2006.01)

Patent

CA 2238558

An ultrasonic trocar assembly includes an ultrasonic obturator and associated trocar canulla which can be used together for effecting placement of the trocar cannulla in a patient for performing endoscopic surgical procedures. The ultrasonic obturator includes an elongated waveguide which transmits ultrasonic energy to a distal end effector of the waveguide, with the end effector being positionable against the wall of a body cavity of the patient for creating a penetration opening. The ultrasonic obturator includes a non-vibratory, sheath-like interface member surrounding and diverging outwardly from the end effector of the waveguide for dilating and enlarging the initially formed penetration opening, thereby minimizing patient trauma and facilitating rapid patient recovery.

L'invention porte sur un trocart ultrasonique comportant un obturateur ultrasonique et une canule associée au trocart. Ces deux éléments peuvent être utilisés ensemble pour placer la canule dans un malade afin d'exécuter des interventions chirurgicales endoscopiques. L'obturateur ultrasonique comprend un guide d'ondes allongé qui transmet de l'énergie ultrasonique à son effecteur distal. Ce dernier peut être placé contre la paroi d'une cavité corporelle du malade pour créer une ouverture de pénétration. L'obturateur ultrasonique comprend une interface genre gaine non vibratoire qui entoure l'effecteur du guide d'ondes et s'en éloigne pour dilater et agrandir l'ouverture de pénétration déjà créée, minimisant ainsi le traumatisme pour le malade et favorisant une guérison rapide.

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