公开(公告)号：US10548652B2

公开(公告)日：2020-02-04

申请号：US15688598

申请日：2017-08-28

Applicant: BOSTON SCIENTIFIC SCIMED, INC.

Inventor： Byron Chun

IPC: A61B18/02 ,  A61B18/00

Abstract: A cryoablation catheter assembly includes a catheter that defines at least one coolant outtake region and receives a rotatable guide tube and a coolant transfer tube. The coolant transfer tube receives and transfers coolant from a coolant source to a distal end of the coolant transfer tube. An expansion element is coupled to a distal portion of the catheter and defines an inner expansion-element space. The inner expansion-element space is in fluid communication with the at least one coolant outtake region and the distal end of the coolant transfer tube. A distal end of the expansion element couples to the guide tube. A rotation system is coupleable to, or coupled to, a proximal end of the guide tube and rotates the distal end of the expansion element relative to the proximal end of the expansion element by rotating the guide tube relative to the catheter.

公开(公告)号：US09757178B2

公开(公告)日：2017-09-12

申请号：US14257622

申请日：2014-04-21

Applicant: BOSTON SCIENTIFIC SCIMED, INC.

Inventor： Byron Chun

IPC: A61B18/02 ,  A61B18/00

CPC classification number: A61B18/02 ,  A61B2018/00202 ,  A61B2018/00214 ,  A61B2018/0022 ,  A61B2018/0212

Abstract: A cryoablation catheter assembly includes a catheter that defines at least one coolant outtake region and receives a rotatable guide tube and a coolant transfer tube. The coolant transfer tube receives and transfers coolant from a coolant source to a distal end of the coolant transfer tube. An expansion element is coupled to a distal portion of the catheter and defines an inner expansion-element space. The inner expansion-element space is in fluid communication with the at least one coolant outtake region and the distal end of the coolant transfer tube. A distal end of the expansion element couples to the guide tube. A rotation system is coupleable to, or coupled to, a proximal end of the guide tube and rotates the distal end of the expansion element relative to the proximal end of the expansion element by rotating the guide tube relative to the catheter.

公开(公告)号：US11026740B2

公开(公告)日：2021-06-08

申请号：US16730541

申请日：2019-12-30

Applicant: BOSTON SCIENTIFIC SCIMED, INC.

Inventor： Byron Chun

IPC: A61B18/02 ,  A61B18/00

Abstract: A cryoablation catheter assembly includes a catheter that defines at least one coolant outtake region and receives a rotatable guide tube and a coolant transfer tube. The coolant transfer tube receives and transfers coolant from a coolant source to a distal end of the coolant transfer tube. An expansion element is coupled to a distal portion of the catheter and defines an inner expansion-element space. The inner expansion-element space is in fluid communication with the at least one coolant outtake region and the distal end of the coolant transfer tube. A distal end of the expansion element couples to the guide tube. A rotation system is coupleable to, or coupled to, a proximal end of the guide tube and rotates the distal end of the expansion element relative to the proximal end of the expansion element by rotating the guide tube relative to the catheter.

公开(公告)号：US09872717B2

公开(公告)日：2018-01-23

申请号：US14747702

申请日：2015-06-23

Applicant: BOSTON SCIENTIFIC SCIMED, INC.

Inventor： Robert F. Bencini ,  Frank Ingle ,  Josef V. Koblish ,  Rebecca Tin ,  James Mazzone ,  Byron Chun ,  David Lawrence

IPC: A61B18/02 ,  A61B5/042 ,  A61B18/00

CPC classification number: A61B18/02 ,  A61B5/0422 ,  A61B2018/00017 ,  A61B2018/00023 ,  A61B2018/0022 ,  A61B2018/00714 ,  A61B2018/00791 ,  A61B2018/00797 ,  A61B2018/0212 ,  A61B2018/0262

Abstract: In some implementations, a method of ablating body tissue includes (a) locating an inflatable balloon portion of a cryotherapy balloon catheter at a treatment site internal to a patient's body, and inflating the inflatable balloon portion; (b) employing electrodes that are disposed on an expandable surface of the inflatable balloon portion to electrically characterize body tissue at the treatment site; (c) ablating the body tissue by supplying a cryotherapy agent to the inflatable balloon portion to cool the body tissue to a therapeutic temperature; (d) employing the electrodes to determine whether the ablating caused desired electrical changes in the body tissue; and (e) repeating (c) and (d) when it is determined that the ablating did not cause the desired electrical changes.