公开(公告)号：US20140058369A1

公开(公告)日：2014-02-27

申请号：US14078012

申请日：2013-11-12

Applicant: BOSTON SCIENTIFIC SCIMED, INC.

Inventor： RAPHAEL HON

IPC: A61B18/02

CPC classification number: A61B18/02 ,  A61B2017/22051 ,  A61B2018/0022 ,  A61B2018/0212 ,  A61B2018/0262

Abstract: Described herein are methods and devices for performing ablation via a cryoablation catheter. An ablation catheter having a cyroablation chamber at its distal end can be used to achieve a uniform ablation band in or around the pulmonary veins. The cyrochamber can house a dispersion member in fluid communication with a refrigerant supply and can function to evenly distribute received refrigerant over some portion of the inner wall of the cryochamber. As a result of this even distribution of refrigerant within the cyrochamber, uniform ablation of the targeted tissue of the patient can be achieved.

Abstract translation: 这里描述的是通过冷冻消融导管进行消融的方法和装置。 可以使用在其远端具有排除腔的消融导管来实现肺静脉内或周围的均匀消融带。 电解槽可以容纳与制冷剂供应流体连通的分散构件，并且可以起作用以将接收的制冷剂均匀地分布在冷冻箱的内壁的某一部分上。 由于这种均匀分布在细胞腔内的制冷剂，可以实现患者目标组织的均匀消融。

公开(公告)号：US20130281996A1

公开(公告)日：2013-10-24

申请号：US13926853

申请日：2013-06-25

Applicant: Boston Scientific Scimed, Inc.

Inventor： FRANK INGLE ,  RAPHAEL HON

IPC: A61B18/02

CPC classification number: A61B18/02 ,  A61B2018/0022 ,  A61B2018/0212 ,  A61B2018/0262

Abstract: Apparatus and methods for uniformly distributing coolant within a cryo-ablation device. A nozzle apparatus includes a tubular member having a plurality of angled apertures that induce swirling of coolant streams dispersed through the angled apertures. Coolant swirling round the tubular member and along an inner surface of an inflatable balloon element inflates the balloon element and cryogenically ablate tissue. The swirling action achieved using angled apertures uniformly distributes coolant along the inner surface of the balloon such that the temperatures along an inner surface of the balloon element and ablation of tissue adjacent to the balloon element are substantially uniform.

公开(公告)号：US20150238243A1

公开(公告)日：2015-08-27

申请号：US14710288

申请日：2015-05-12

Applicant: BOSTON SCIENTIFIC SCIMED, INC.

Inventor： FRANK W. INGLE ,  LEONARD J. GEORGE ,  JOANN HEBERER ,  RAPHAEL HON

IPC: A61B18/02

CPC classification number: A61B18/02 ,  A61B2017/22051 ,  A61B2018/00166 ,  A61B2018/00172 ,  A61B2018/0022 ,  A61B2018/00577 ,  A61B2018/0212 ,  A61B2018/0262

Abstract: Apparatus and methods for cooling liquid coolant, such as nitrous oxide, to be delivered to a cryo-ablation device such as a balloon catheter. A hose or conduit in fluid communication with the ablation device includes an outer member and inner tubes. A first inner tube disposed within a lumen of the outer member carries liquid coolant to the ablation device. Another inner tube also disposed within the lumen carries liquid coolant and terminates within the lumen such that gaseous coolant derived from liquid coolant flowing through the second inner tube flows within the lumen to cool or chill the first inner tube and liquid coolant carried by the first inner tube to the ablation device.