US 12,440,231 B2
Retrieval system and method
Maysa Mustafa, Zichron Yaakuv (IL); Maxim Vasylevytsky, Kefar-Sava (IL); Amir Belson, Savion (IL); and Aviram Alfia, Karmiel (IL)
Assigned to CERETRIEVE LTD., Misgav Business Park (IL)
Filed by CERETRIEVE LTD., Misgav Business Park (IL)
Filed on May 31, 2023, as Appl. No. 18/204,133.
Application 18/204,133 is a continuation of application No. PCT/IL2021/051461, filed on Dec. 8, 2021.
Claims priority of provisional application 63/122,992, filed on Dec. 9, 2020.
Prior Publication US 2023/0346402 A1, Nov. 2, 2023
Int. Cl. A61B 17/221 (2006.01); A61B 17/22 (2006.01)
CPC A61B 17/221 (2013.01) [A61B 2017/22074 (2013.01); A61B 2017/22079 (2013.01); A61B 2017/2215 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method of retrieving biological material from a blood vessel comprising:
advancing a distal part of a catheter system into the blood vessel while the catheter system is in a preconfigured delivery state in which a funnel-shaped sleeve of the catheter system is compressed within a catheter of the catheter system, the catheter system being preconfigured to have:
a partially-deployed state in which (i) a predetermined distal part of the funnel-shaped sleeve is disposed out of a distal opening of the catheter, and (ii) a predetermined intermediate part of the funnel-shaped sleeve and a predetermined proximal part of the funnel-shaped sleeve are disposed within the catheter,
a fully-deployed state in which (i) the distal part and the intermediate part are disposed out of the distal opening, and (ii) the proximal part is disposed within the catheter;
while the distal part of the catheter system remains in the blood vessel, transitioning the catheter system into the partially-deployed state by advancing the distal part of the funnel-shaped sleeve out of the distal opening;
while the catheter system remains in the partially-deployed state, applying suction to trap at least part of the biological material within the funnel-shaped sleeve; and
subsequently, transitioning the catheter system into the fully-deployed state by advancing the intermediate part out of the distal opening; and
while the catheter system remains in the fully-deployed state, applying further suction to draw more of the material into the funnel-shaped sleeve.