Incisional breast biopsy device

Details Incisional breast biopsy device Incisional breast biopsy device

A - Human Necessities

61

B

A61B 10/00 (2006.01)

Patent

CA 2424355

A biopsy device (10) is provided which includes a localization needle (62) having a guide wire (66) preloaded into the biopsy device. The device includes a stylet (18) having a blade (16, 17) for transecting and separating tissue. The device further includes a cannula (14) for cutting a core of tissue and a garrote wire (74) for cutting a transection of tissue transverse to the core cut by the cannula. The garrote wire is activated by a trigger mechanism (26) which is locked out by a lockout feature within the device until the garrote wire has been advanced around the core of tissue cut by the cannula.

L'invention concerne un dispositif de biopsie comprenant une aiguille de localisation pourvue d'un fil-guide préalablement chargé à l'intérieur de ce dispositif, et un stylet pourvu d'une lame destinée à pratiquer une dissection transversale et à séparer les tissus. En outre, ce dispositif comprend une canule destinée à couper une partie de tissu et un mécanisme d'étranglement à fil pour pratiquer une dissection des tissus transversale à la coupe pratiquée par la lame de la canule. Le fil d'étranglement est actionné par un mécanisme de détente qui est verrouillé au moyen d'un dispositif de verrouillage à l'intérieur du dispositif jusqu'à ce que le fil d'étranglement ait été avancé autour de la partie de tissu coupée par la canule.

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