Firing mechanism for use in a surgical biopsy device

A - Human Necessities – 61 – B

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A61B 10/00 (2006.01)

Patent

CA 2394082

An image-guided, vacuum assisted, percutaneous, coring, cable driven breast biopsy instrument (40) which may be conveniently mounted to movable table (12) on an x-ray machine. The biopsy instrument (40) incorporates a firing mechanism to rapidly advance the biopsy probe (42) into the breast. The biopsy probe (42) includes an elongated piercer (70) having a piercer tip (72). A control unit (100) controls the sequence of actions performed by the biopsy instrument (40) in order to obtain a biopsy sample from a surgical patient.

L'invention concerne un instrument (40) de biopsie du sein réalisée sous guidage image, assisté par le vide, percutané, avec prélèvement de parties centrales et à commande par câble, pouvant être facilement monté sur une table mobile (12), sur un appareil à rayons X. L'instrument de biopsie selon l'invention (40) comprend un mécanisme dit <= de lancement >= destiné à faire progresser rapidement une sonde de biopsie (42) à l'intérieur du sein. La sonde de biopsie (42) comprend un poinçon de forme allongée (70) ayant une pointe perceuse (72). Il est prévu une unité de commande (100) destinée à régler la succession des actions effectuées par l'instrument (40) en vue d'obtenir un échantillon de biopsie provenant d'un patient.

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