Sydney Cardinali,Megan Gerstner,Ashley Sink,Walter Stubblefield, III,Timothy Wardle
申请号：
US16440114
公开号：
US20190380725A1
申请日:
2019.06.13
申请国别(地区):
US
年份:
2019
代理人:
摘要：
An extractor includes a rigid outer cannula forming a lumen extending between a proximal end and an opposing distal end of the outer cannula. An inner cannula is slidably positioned within the lumen of the outer cannula. The inner cannula forms a central passage along a longitudinal axis of the inner cannula extending between a proximal end and an opposing distal end of the inner cannula. A plurality of secondary passages are positioned about the central passage and extend along at least a portion of a length of the inner cannula between the proximal end and the distal end of the inner cannula. An annularly expanding and retracting extraction mechanism at the distal end of the inner cannula is operable to capture and extract kidney stones from within a lumen of a patient.
