Biopsy device with aperture orientation and improved tip...

A - Human Necessities – 61 – B

Patent

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Details

A61B 10/00 (2006.01)

Patent

CA 2550137

The invention is directed to a system and device for separating and collecting a tissue specimen from a target site within a patient. The device includes a probe component which is releasably secured to the driver component (12). The probe component has an elongated tubular section (15), a penetrating distal tip (16) and a tissue receiving aperture (17) in the distal end of the tubular section proximal to the distal tip, and a tissue cutting member (20) which is slidably disposed within the probe member to cut a tissue specimen drawn into the interior of the device through the aperture by applying a vacuum (59) to the inner lumen of the tissue cutting member. The driver has drive members (22, 30, 40) for operating the elements of the probe component. The tissue penetrating distal tip preferably has a triple concave curvature shape with three curved cutting edges leading to a sharp distal point.

L'invention concerne un système et un dispositif de séparation et de collecte d'un prélèvement tissulaire provenant d'un site cible au sein d'un patient. Ledit dispositif comprend un composant de sonde qui est fixé de manière amovible sur un composant d'entraînement. Ce composant de sonde présente une section tubulaire allongée, un embout distal de pénétration et une ouverture de réception de tissu dans l'extrémité distale de la section tubulaire proximale de l'embout distal, et un élément de découpe de tissu placé coulissant au sein de l'élément de sonde, de manière à couper un prélèvement tissulaire amené à l'intérieur du dispositif à travers l'ouverture par application d'un vide au niveau de la lumière interne de l'élément de découpe de tissu. Le dispositif d'entraînement comporte cinq éléments d'entraînement servant à faire fonctionner les éléments du composant de sonde. L'embout distal de pénétration tissulaire possède, de préférence, une forme de courbe concave triple pourvue de trois bords coupants courbés menant à un point distal tranchant.

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