Biopsy needle

A - Human Necessities – 61 – B

Patent

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Details

A61B 10/00 (2006.01) A61B 17/32 (2006.01)

Patent

CA 2599455

A biopsy needle includes tissue capture elements within the needle lumen to help hold a tissue sample within the needle and maintain its integrity. According to one aspect, several flexible members form a structure that allows tissue to enter the lumen during advancement of the needle into tissue, and prevents the tissue sample from exiting the needle during retraction of the needle. The flexible members may, in some embodiments, include cutting edges configured to cut the tissue sample from the target tissue mass at the start of needle extraction.

La présente invention concerne une aiguille à biopsie comportant des éléments de capture de tissu situés à l'intérieur de la lumière de l'aiguille pour faciliter la saisie d'un échantillon tissulaire à l'intérieur de l'aiguille et assurer son intégrité. Conformément à un aspect de l'invention, plusieurs éléments souples forment une structure qui permettent au tissu de pénétrer dans la lumière pendant la progression de l'aiguille à l'intérieur du tissu, et qui empêche l'échantillon tissulaire de ressortir de l'aiguille au cours du retrait de l'aiguille. Ces éléments souples peuvent, dans certains modes de réalisation, présenter des bords coupants conçus pour découper l'échantillon tissulaire à partir de la masse de tissu cible au début de l'extraction de l'aiguille.

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