Apparatus and method for accessing a body site

Details Apparatus and method for accessing a body site Apparatus and method for accessing a body site

A - Human Necessities

61

B

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

Patent

CA 2490072

A device and method of using the device to access a desired tissue site within a patient's body and separating a tissue specimen from the tissue site suitable for evaluation. The device includes a probe member having an arcuate tissue-cutting RIF powered electrode secured to and distally spaced from the distal end of the probe and a small dimensioned distal extremity which when an inner lumen thereof is subjected to a vacuum, secured tissue for the specimen to the surface of the distal extremity. A circular tissue-cutting blade preferably secured to the distal end of a supporting tube is configured to rotate and move longitudinally along the shaft of the probe member effective to sever a tissue specimen from tissue secured to the surface of the distal extremity of the probe member. The supporting tube covers the separated specimen, and may be disposed within an accessing cannula.

L'invention porte sur un dispositif et sa méthode d'utilisation permettant d'accéder à un tissu du corps d'un patient en vue d'en prélever un échantillon à des fins d'examen. Le dispositif comporte une sonde munie d'une électrode d'excision de recourbée alimentée en RF et fixée à l'extrémité distale de la sonde mais en étant séparée, et présentant une extrémité distale de petites dimensions qui lorsque la lumière intérieure est mise sous vide plaque les tissus de prélèvement d'échantillons sur la surface de l'extrémité distale. Une lame coupante circulaire, de préférence fixée à l'extrémité distale d'un tube support, mobile axialement et pouvant tourner autour de l'axe de la sonde, peut détacher un échantillon d'un tissu plaqué sur la surface de l'extrémité distale de la sonde. Le tube support, qui recouvre l'échantillon excisé, peut être disposé à l'intérieur de la canule d'accès.

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