Patent ID: 9706980
Date: 2017-07-18
CPC Classifications: A61B,G01N

Claim:
1. A cannula assembly, comprising: a tube having a proximal end, a proximal portion, and a distal portion; a flexible sealing element connected to the proximal portion of the tube, the flexible sealing element having a longitudinal axis coaxial with the tube, the flexible sealing element having a cantilevered portion that longitudinally extends a longitudinal distance parallel to the longitudinal axis in a proximal direction from the proximal end of the outer tube, the cantilevered portion having an exposed inner surface portion that longitudinally extends from the proximal end of the tube, the cantilevered portion having a wall portion proximal the exposed inner surface portion, the wall portion configured to define an interior sealing edge; a cap connected to the tube, the flexible sealing element being disposed within the cap; and a guide roller of a vacuum biopsy device annularly interposed between the cap and the sealing edge of the wall portion of the flexible sealing element.