公开(公告)号：US20120253337A1

公开(公告)日：2012-10-04

申请号：US13482722

申请日：2012-05-29

Applicant: JAMES R. WATSON

Inventor： JAMES R. WATSON

IPC: A61B18/02

CPC classification number: A61B18/02 ,  A61B2018/0022 ,  A61B2018/00375 ,  A61B2018/00577 ,  A61B2018/00642 ,  A61B2018/00666 ,  A61B2018/00744 ,  A61B2018/0212 ,  A61B2018/0262 ,  A61B2018/0287 ,  A61B2090/064 ,  A61M25/1006 ,  A61M25/1011 ,  A61M25/10185 ,  A61M2025/1013 ,  A61M2025/1081

Abstract: A method of performing a cryotherapy procedure can include introducing a cryotherapy balloon catheter at a treatment site inside a patient's body; regulating, during a first phase of a cryotherapy procedure, flow of cryogenic fluid to and exhaust from a distal balloon portion of the cryotherapy balloon catheter to cause an initial pressure to be maintained inside the distal balloon portion that is sufficiently high to cause an outer wall of the distal balloon portion to be pressed against body tissue at the treatment site; and regulating, during a second phase of the cryotherapy procedure, flow of cryogenic fluid to and exhaust from the distal balloon portion to cause a) a temperature inside the distal balloon portion to reach a value sufficient to deliver therapeutic levels of cryotherapy to the body tissue, and b) a second-phase pressure to be maintained that is within a threshold value of the initial pressure.

Abstract translation: 执行冷冻治疗程序的方法可以包括在患者体内的治疗部位引入冷冻治疗气囊导管; 在冷冻治疗程序的第一阶段期间调节低温流体流向冷冻治疗球囊导管的远端球囊部分并从其排出，以使远端球囊部分内的初始压力保持在足够高的高度以引起外壁 远端球囊部分在治疗部位被压靠身体组织; 并且在冷冻治疗过程的第二阶段期间调节低温流体流向远端球囊部分并从远端气囊部分排出，以使远端球囊部分内的温度达到足以将治疗水平的冷冻治疗递送至身体组织的值 ，以及b）要保持在初始压力​​的阈值内的第二相压力。