US 12,295,555 B2
Biopsy tool and method for removing a tissue sample
Rebecca Szafran, Lidingö (SE); David Skantze, Saltsjö-boo (SE); and Magnus Olsen, Vallentuna (SE)
Assigned to Szafran Biopsy AB, Lidingö (SE)
Appl. No. 17/612,346
Filed by Szafran Biopsy AB, Lidingö (SE)
PCT Filed May 27, 2020, PCT No. PCT/SE2020/050539
§ 371(c)(1), (2) Date Nov. 18, 2021,
PCT Pub. No. WO2020/242371, PCT Pub. Date Dec. 3, 2020.
Claims priority of application No. 1950644-3 (SE), filed on May 29, 2019.
Prior Publication US 2022/0240905 A1, Aug. 4, 2022
Int. Cl. A61B 10/02 (2006.01); A61B 17/00 (2006.01); A61B 17/3205 (2006.01)
CPC A61B 10/0266 (2013.01) [A61B 17/32053 (2013.01); A61B 2010/0208 (2013.01); A61B 2017/00477 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A biopsy tool for removing a tissue sample, the biopsy tool being configured to be altered between an incision state and a severing state, the biopsy tool comprising:
an elongated outer tubular member extending longitudinally between a proximal end and a distal end, wherein the outer tubular member includes a first circumferential wall, and wherein the distal end of the outer tubular member includes a cutting edge;
an elongated inner tubular member arranged inside the outer tubular member, wherein the inner tubular member includes a proximal end, a distal end, and a second circumferential wall; and
a cutting wire;
wherein the outer and the inner tubular members are rotatable in relation to each other around a rotational axis;
wherein the outer tubular member includes a first aperture in the first circumferential wall and the inner tubular member includes a second aperture in the second circumferential wall, wherein the first and the second apertures extend in a direction perpendicular to the rotational axis;
wherein the cutting wire is spring biased and is arranged in association with the first aperture of the outer tubular member;
wherein the biopsy tool is configured to obtain the severing state by rotational movement of the outer tubular member and/or the inner tubular member, so that the first aperture and the second aperture overlap, whereby the cutting wire is displaced perpendicularly to the rotational axis by means of spring force;
wherein the cutting wire is spring biased against a peripheral surface of the inner tubular member during the incision state in which a first cut into the tissue is conducted.