Hollow surgical cutter with apertured flutes

Details Hollow surgical cutter with apertured flutes Hollow surgical cutter with apertured flutes

A - Human Necessities

61

B

A61B 17/32 (2006.01) A61B 17/16 (2006.01) B23C 5/10 (2006.01) B23C 5/28 (2006.01) A61M 1/00 (2006.01)

Patent

CA 2203568

The surgical tool (16) of a surgical instrument (10) is configured to have a plurality of tissue-cutting edges (22) circumferentially spaced by flutes (24) disposed in an exterior surface (23) of the tool. Each flute includes an aperture (25) that intersects an interior chamber (17) of the tool for conveying tissue fragments cut by the edges into the chamber. The chamber communicates with an interior passage (15) of a rotating tube (14) on which the tool is mounted. During operation, the tissue fragments (e.g., bone fragments) cut by the rotating surgical tool are conveyed into the flutes and through the apertures into the chamber for removal from the surgical site through the interior passage of the tube, while the instrument remains in situ for further cutting.

L'invention concerne un outil chirurgical (16) d'un instrument chirurgical (10). Cet outil est configuré pour présenter une pluralité de bords de coupe des tissus (22) espacés dans le sens circonférentiel par des gorges (24) disposées dans une surface extérieure (23) de l'outil. Chaque gorge présente une ouverture (25) qui recoupe une chambre intérieure (17) de l'outil pour transporter les fragments tissulaires coupés par les bords dans la chambre. Cette chambre communique avec un passage intérieur (15) d'un tube rotatif (14) sur lequel l'outil est fixé. Lors de l'opération, les fragments tissulaires (ou par exemple, des fragments osseux) coupés par l'outil chirurgical rotatif passent dans les gorges, et traversent les ouvertures pour pénétrer dans la chambre de manière à pouvoir être évacués du site opératoire, par le passaage intérieur du tube, tandis que l'instrument reste en place pour continuer l'opération.

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