Biopsy needle

Details Biopsy needle Biopsy needle

A - Human Necessities

61

B

A61B 10/00 (2006.01)

Patent

CA 2202613

A biopsy needle device includes an outer cannula (12) having a pointed, tissue- penetrating distal end and a side notched stylet (14) located within the cannula (12). The stylet (14) and cannula (12) are axially movable with respect to each other. The stylet (14) is constructed from a solid rod having a notch (8) near the distal end. The notch (8) is bordered in portions along its length by a walled region to at least in part define a protected sample containment space. The stylet (14) includes a pointed, tissue-penetrating distal end. The notch (8) defines a full cylindrical region, and the walled region has a semicircular cross section.

Une aiguille de biopsie comprend une canule externe (12) pourvue d'une extrémité distale pointue pénétrant le tissu, et un stylet à encoche latérale (14) placé à l'intérieur de la canule (12). Le stylet (14) et la canule (12) peuvent se déplacer axialement l'un par rapport à l'autre. Le stylet (14) est conçu dans une tige solide pourvue d'une encoche (8) située près de l'extrémité distale. L'encoche (8) est bordée en certaines parties de sa longueur d'une région cloisonnée afin de former au moins partiellement un espace protégé destiné à contenir un échantillon. Le stylet (14) comporte une extrémité distale pointue pénétrant le tissu. L'encoche (8) forme une région totalement cylindrique et la paroi cloisonnée comporte une section transversale semi-circulaire.

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