Incisional breast biopsy device

A - Human Necessities – 61 – B

Patent

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A61B 10/02 (2006.01) A61B 17/3205 (2006.01)

Patent

CA 2302158

A breast biopsy device is provided which includes a localization needle having a guide wire preloaded into the biopsy device. The device includes a stylet having a blade for transecting and separating healthy tissue on route to the biopsy site. The use of the stylet blade reduces the trauma to healthy breast tissue. The device further includes a cannula blade and a garrote for forming a cut transverse to the cone cut by the cannula blade. A lockout feature prevents the garrote from deploying until after a cutting plane of the garrote has been advanced beyond the end of the guide wire.

L'invention concerne un dispositif pour biopsie par incision mammaire, comprenant une aiguille de localisation pourvue d'un fil-guide préalablement chargé à l'intérieur de ce dispositif. Ce dispositif comprend en outre un stylet présentant une lame destinée à pratiquer une dissection transversale et à séparer les tissus sains à proximité du site d'examen, l'utilisation de ce stylet permettant de réduire les lésions pouvant être causées à ces tissus mammaires sains. Ce dispositif comprend enfin une canule, qui présente une surface coupante, et un tourniquet, tous deux conçus pour effectuer une coupe transversale à la coupe pratiquée par la lame de la canule. Un dispositif de verrouillage permet par ailleurs d'empêcher le tourniquet de se déployer avant que la ligne de coupe de ce dernier ne dépasse l'extrémité dudit fil-guide.

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