公开(公告)号：US20170143419A1

公开(公告)日：2017-05-25

申请号：US15422324

申请日：2017-02-01

Applicant: BOSTON SCIENTIFIC SCIMED, INC.

Inventor： Frank Ingle ,  Paul A. Roche

IPC: A61B18/14

CPC classification number: A61B18/1492 ,  A61B2017/00084 ,  A61B2018/00011 ,  A61B2018/00666 ,  A61B2018/00702 ,  A61B2018/00761 ,  A61B2018/00779 ,  A61B2018/00791 ,  A61B2018/00839

Abstract: An embodiment of a system for ablating tissue comprises an electrode configured for use to deliver RF power to ablate the tissue, and a heat flow sensor configured to provide a measurement of heat flow from the electrode to blood or irrigation fluid. According to some embodiments, the system further comprises an RF source configured to generate RF power connected to the electrode (PE) to ablate tissue, and a controller configured to control a level of RF power and a duration for an ablation procedure. The controller is programmed to implement a process to estimate RF power dissipated in tissue (PT), including calculating power loss due to convective heat flow (PCONV) from the tissue through the electrode to the blood or the irrigation fluid to cool the electrode, and calculating the RF power dissipated in tissue (PT) by subtracting PCONV from PE.

公开(公告)号：US09888953B2

公开(公告)日：2018-02-13

申请号：US14712405

申请日：2015-05-14

Applicant: BOSTON SCIENTIFIC SCIMED, INC.

Inventor： Frank Ingle ,  Rebecca Tin ,  Robert F. Bencini ,  James Mazzone

IPC: A61B18/02 ,  A61B18/00

CPC classification number: A61B18/02 ,  A61B2018/00255 ,  A61B2018/0212

Abstract: A cryotherapy system includes a cryotherapy catheter having an inflatable balloon portion and a pressure regulator. The inflatable balloon portion includes an outer balloon and an inner balloon within the outer balloon. The inner balloon is configured to receive during a cryotherapy procedure a cryogenic agent for extracting heat from body tissue at a desired location. The inflatable balloon portion is at a distal end of the cryotherapy catheter. The pressure regulator is adapted to maintain a positive pressure between the inner balloon and the outer balloon during a cryotherapy procedure.

公开(公告)号：US20180168710A1

公开(公告)日：2018-06-21

申请号：US15894050

申请日：2018-02-12

Applicant: Boston Scientific Scimed Inc.

Inventor： Frank Ingle ,  Robert F. Bencini ,  James Mazzone ,  Rebecca W. Tin

IPC: A61B18/02 ,  A61B18/00

CPC classification number: A61B18/02 ,  A61B2018/00255 ,  A61B2018/0212

Abstract: A cryotherapy system includes a cryotherapy catheter having an inflatable balloon portion and a pressure regulator. The inflatable balloon portion includes an outer balloon and an inner balloon within the outer balloon. The inner balloon is configured to receive during a cryotherapy procedure a cryogenic agent for extracting heat from body tissue at a desired location. The inflatable balloon portion is at a distal end of the cryotherapy catheter. The pressure regulator is adapted to maintain a positive pressure between the inner balloon and the outer balloon during a cryotherapy procedure.

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.