Methods and devices for collection of soft tissue

A - Human Necessities – 61 – B

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A61B 10/00 (2006.01) A61B 18/14 (2006.01) A61B 17/00 (2006.01) A61B 17/32 (2006.01) A61B 19/00 (2006.01)

Patent

CA 2262552

This invention provides an inventive tissue sampling probe which offers many advantages over probes available in the prior art. Unexpectedly superior results are obtained in connection with the retrieval of intact tissue specimens, because of a unique combination of cutting features, including, for example, the employment of an electrosurgical cutting element and a vacuum assist in one preferred embodiment. A particularly important feature of the invention is the ability to manipulate the electrosurgical cutting element to cleanly sever the distal end of the tissue specimen. In certain embodiments, this is accomplished without any cutting impact on surrounding tissue. The versatility of the invention permits its use in many applications, including, for example, breast biopsies, laparoscopic surgery, and lymphadenectomy procedures.

L'invention concerne une nouvelle sonde de prélèvement d'échantillons de tissus offrant de nombreux avantages par rapport aux sondes de la technique antérieure. On obtient, de façon inattendue, des résultats supérieurs en association avec le prélèvement de tissus intacts, grâce à une combinaison exceptionnelle de caractéristiques de coupe, par exemple avec un élément de coupe électrochirurgical et un organe auxiliaire à dépression, dans une mode de réalisation préféré de l'invention. La possibilité de manipuler l'élément de coupe électrochirurgical pour séparer nettement l'extrémité distale du prélèvement tissulaire constitue l'une des caractéristiques principales de l'invention. Dans certains modes de réalisation, cette opération est réalisée sans impact de coupe sur le tissu environnant. Le caractère polyvalent de l'invention permet son application dans de nombreux domaines, par exemple, pour les biopsies du sein, les laparoscopies et les lymphadénoctomies.

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