US 11,872,057 B2
Annular mapping catheter
Ji Feng, Beijing (CN); Jie Gong, Beijing (CN); and Lirong Wang, Beijing (CN)
Assigned to SYNAPTIC MEDICAL (BEIJING) CO. LTD., Beijing (CN)
Appl. No. 16/963,804
Filed by SYNAPTIC MEDICAL (BEIJING) CO. LTD., Beijing (CN)
PCT Filed Jan. 22, 2019, PCT No. PCT/CN2019/072634
§ 371(c)(1), (2) Date Jul. 21, 2020,
PCT Pub. No. WO2019/141284, PCT Pub. Date Jul. 25, 2019.
Claims priority of application No. 201810058930.0 (CN), filed on Jan. 22, 2018.
Prior Publication US 2020/0359967 A1, Nov. 19, 2020
Int. Cl. A61B 5/00 (2006.01); A61B 18/02 (2006.01); A61B 17/00 (2006.01); A61B 18/00 (2006.01)
CPC A61B 5/6853 (2013.01) [A61B 18/02 (2013.01); A61B 2017/00331 (2013.01); A61B 2017/00867 (2013.01); A61B 2018/0022 (2013.01); A61B 2018/00375 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/0212 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An annular mapping catheter, wherein the annular mapping catheter is adapted to be used with a cryoballoon catheter, the annular mapping catheter comprising:
a catheter body, wherein the catheter body has a distal end and a proximal end;
a handle disposed at the proximal end of the catheter body;
a distal assembly disposed at the distal end of the catheter body, the distal assembly including a head tube having a flexible tube body and a shape memory material, and the distal assembly presents a predetermined bend comprising an annular portion and a vertical portion in a free state, and the vertical portion connects the annular portion to the catheter body, and the distal assembly is provided with electrodes,
wherein the predetermined bend is formed such that, in a free state, the vertical portion extends toward the distal end at least partially beyond the annular portion and the end of the annular portion slants toward the proximal end,
wherein after the distal assembly is turned into the predetermined bend, a development marker is disposed at the most distal end of the predetermined bend, and
wherein during operation, the distal assembly is configured to extend from a hole at a distal end of a balloon of the cryoballoon catheter, and transitions into the predetermined bend, the cryoballoon catheter is configured to move distally towards the annular portion of the distal assembly such that the annular portion is in contact with a distal portion of the balloon for pulmonary vein ostium mapping and cryoablation.