Needle aspiration biopsy device and method

Details Needle aspiration biopsy device and method Needle aspiration biopsy device and method

A - Human Necessities

61

B

A61B 10/00 (2006.01)

Patent

CA 2542550

A needle aspiration biopsy device (20) includes a syringe (28), a valve coupler (25) for controlling a vacuum in the syringe barrel (30), and an anti- reflux head. The head includes a hub (24), defining a large collection well (64) preferably several hundred micro liters in volume, and a needle (22) mounted to the hub (24). A passageway is defined either by a contoured needle or a straight needle and an internal channel in the hub wall such that a proximal end of the passageway extends inside the hub (24) and opens in spaced relation to a floor (66) of the collection well (64). A method of biopsy using the device is also disclosed.

L'invention concerne un dispositif de biopsie aspiration (20) à l'aiguille comprenant une seringue (28), un coupleur de valve (25) permettant de commander le vide dans le cylindre de la seringue (30) et une tête anti-reflux. Ladite tête comprend un embout (24) définissant un grand puits de collecte (64), de préférence, plusieurs centaines de microlitres en volume, et une aiguille (22) montée sur un embout (24). Un passage est défini soit par une aiguille profilée soit par une aiguille droite, et un canal interne traversant dans la paroi de l'embout de sorte que l'extrémité proximale dudit passage s'étend à l'intérieur de l'embout (24) et ouvre, en relation espacée, sur la partie inférieure (66) du puits de collecte (64). L'invention concerne également un procédé de biopsie.

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