US 12,268,374 B2
Straight-insertion, forward-less fire, low noise, pneumatic soft tissue biopsy needle
Dan Stoianovici, Reisterstown, MD (US); Changhan Jun, College Park, MD (US); Doru Petrisor, Lutherville, MD (US); and Misop Han, West Friendship, MD (US)
Assigned to The Johns Hopkins University, Baltimore, MD (US)
Appl. No. 16/487,236
Filed by THE JOHNS HOPKINS UNIVERSITY, Baltimore, MD (US)
PCT Filed Feb. 22, 2018, PCT No. PCT/US2018/019117
§ 371(c)(1), (2) Date Aug. 20, 2019,
PCT Pub. No. WO2018/169658, PCT Pub. Date Sep. 20, 2018.
Claims priority of provisional application 62/461,891, filed on Feb. 22, 2017.
Prior Publication US 2021/0128122 A1, May 6, 2021
Int. Cl. A61B 10/02 (2006.01)
CPC A61B 10/0275 (2013.01) [A61B 2010/0208 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A device for biopsy comprising:
a needle assembly having a longitudinal axis, a proximal end and a distal end, wherein the longitudinal axis extends from the proximal end to the distal end of the needle assembly;
a stylet, wherein the stylet has a proximal end and a distal end, wherein the stylet comprises a point at the distal end, and wherein the stylet comprises a magazine for loading the biopsy sample, wherein the magazine has a structurally curved shape, wherein the magazine has a proximal end and a distal end, wherein the structurally curved shape of the magazine is curved with respect to a longitudinal axis of the magazine, and wherein the longitudinal axis of the magazine extends from the proximal end to the distal end of the magazine;
a barrel, having a proximal end and a distal end, and wherein the barrel is configured to move over the stylet, wherein the distal end of the barrel comprises a slanted surface, wherein the slanted surface comprises a first slant at a first angle, and a second slant at a second angle to the first slant;
a firing sequence having a relative motion of the barrel and the stylet that slices and collects the biopsy sample; and
wherein the distal end of the stylet is bent back in an opposite direction of the structurally curved shape of the magazine, such that the distal end of the stylet is oriented straight along the longitudinal axis of the needle when the distal end of the barrel is near the point of the stylet.