Single motor hand-held biopsy apparatus

A - Human Necessities – 61 – B

Patent

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A61B 10/00 (2006.01)

Patent

CA 2593113

A tissue removal apparatus having a cutting element mounted to a handpiece. The cutting element includes an outer cannula defining a tissue-receiving opening and an inner cannula concentrically disposed within the outer cannula. The outer cannula has a trocar tip at its distal end and a cutting board snugly disposed within the outer cannula. The inner cannula defines an inner lumen that extends the length of the inner cannula, and which provides an avenue for aspiration. The inner cannula terminates in an inwardly beveled, razor-sharp cutting edge and is driven by a single motor that causes both rotary and reciprocating movement of the inner cannula.

L'invention concerne un appareil d'extraction de tissu doté d'un élément coupant monté sur une pièce à main. Cet élément coupant comprend une canule externe définissant une ouverture pour recevoir le tissu et une canule interne disposée de manière concentrique à l'intérieur de la canule externe. La canule externe a une pointe de trocart à son extrémité distale et un bord coupant placé de façon ajustée dans la canule externe. La canule interne définit une lumière interne qui allonge la canule interne et forme une voie d'aspiration. La canule interne se termine par un bord tranchant comme une lame de rasoir, biseautée vers l'intérieur, et elle est entraînée par un seul moteur qui lui imprime un mouvement à la fois rotatif et alternatif.

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