Søren Falkesgaard Ørts,Angela K. Jensen,Jens Jørgen Holme,Weinan Ji,Marek Fraczkowski
申请号：
US16349334
公开号：
US20200187921A1
申请日:
2017.11.22
申请国别(地区):
US
年份:
2020
代理人:
摘要：
A biopsy apparatus includes a biopsy probe assembly that is releasably attached to a driver assembly. The biopsy probe assembly has a vacuum cannula and a stylet cannula coaxially arranged. The vacuum cannula has a flared portion that extends distally from an elongate portion. The stylet cannula is movable between a first extended position and a first retracted position. The stylet cannula has a distal portion having a sample notch and a protrusion member that extends proximally in a lumen of stylet cannula along a portion of a longitudinal extent of the sample notch, wherein when the stylet cannula is in the first retracted position, the protrusion member is received within the flared portion of the vacuum cannula. The biopsy apparatus may further include a controller circuit that has a virtual energy reservoir, and the controller circuit executes program instructions to control current to motors when engaging dense tissue.
