主权项 |
1. A tissue sample securement apparatus for securing a volumetric tissue sample, the tissue sample securement apparatus comprising:
an expandable-retractable tissue sampling device and a catheter member, the tissue sampling device comprising a tubular portion and an expandable tip construction, the tubular portion comprising a distal tube end and a proximal tube end, the tip construction extending from the distal tube end, the catheter member comprising a distal catheter end, a proximal catheter end, and an inner catheter surface, the tubular portion being receivable within the catheter member and being axially displaceable relative thereto, the tip construction being receivable within the catheter member when the tubular portion is axially displaced in a first direction, the inner catheter surfacing retaining the tip construction in a spring-actuated state when the tip construction is received in the catheter member, the tubular portion being displaceable in a second direction for emerging the tip construction from the catheter member, the tip construction being expandable when emerged from the catheter member, the expanded tip construction for slicing into a target tissue mass when further displaced in the second direction. |