METHOD AND APPARATUS FOR REMOTE ISCHEMIC CONDITIONING DURING REVASCULARIZATION
First Claim
1. A percutaneous transluminal vascular intervention (PTVI) device for use with an angioplasty catheter during revascularization of a coronary artery in a body and for placement in one or more arteries through which a distal end of the angioplasty catheter is advanced into the coronary artery, the PTVI device comprising:
- a proximal end;
a distal end configured to be placed in the one or more arteries;
an elongate tubular shaft coupled between the proximal end and the distal end,a lumen extending within the elongate tubular shaft and including a proximal opening at the proximal end and distal opening at the distal end, the lumen configured to accommodate a portion of the angioplasty catheter and allow the distal end of the angioplasty catheter to enter the proximal opening and exit from the distal opening;
an adjustable balloon incorporated onto the elongate tubular shaft and configured to occlude a portion of the one or more arteries, the balloon including a chamber having an adjustable volume; and
an elongate balloon adjustment tube coupled to the adjustable balloon and including a fluid passageway in fluid communication with the chamber to allow inflation and deflation of the adjustable balloon.
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Accused Products
Abstract
Remote ischemic conditioning is applied during a revascularization procedure to prevent and/or reduce myocardial injury associated with myocardial infarction (MI) and the revascularization procedure such as percutaneous transluminal coronary angioplasty (PTCA). A percutaneous transluminal vascular intervention (PTVI) device used for the revascularization procedure, such as an introducer sheath or a guide catheter, includes an adjustable balloon to be positioned at a vascular site remote from the heart. The remote ischemic conditioning is applied by inflating and deflating the adjustable balloon, thereby causing temporary ischemia in the vascular site to activate the patient'"'"'s intrinsic cardioprotective mechanism.
124 Citations
20 Claims
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1. A percutaneous transluminal vascular intervention (PTVI) device for use with an angioplasty catheter during revascularization of a coronary artery in a body and for placement in one or more arteries through which a distal end of the angioplasty catheter is advanced into the coronary artery, the PTVI device comprising:
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a proximal end; a distal end configured to be placed in the one or more arteries; an elongate tubular shaft coupled between the proximal end and the distal end, a lumen extending within the elongate tubular shaft and including a proximal opening at the proximal end and distal opening at the distal end, the lumen configured to accommodate a portion of the angioplasty catheter and allow the distal end of the angioplasty catheter to enter the proximal opening and exit from the distal opening; an adjustable balloon incorporated onto the elongate tubular shaft and configured to occlude a portion of the one or more arteries, the balloon including a chamber having an adjustable volume; and an elongate balloon adjustment tube coupled to the adjustable balloon and including a fluid passageway in fluid communication with the chamber to allow inflation and deflation of the adjustable balloon. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for cardioprotection during revascularization of a coronary artery, the method comprising:
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inserting a portion of a percutaneous transluminal vascular intervention (PTVI) device into one or more arteries, the PVTI device including an adjustable balloon; inserting a portion of an angioplasty catheter into a lumen of the PTVI device; advancing a distal end of the angioplasty catheter through the PTVI device into the coronary artery; and occluding a portion of the one or more arteries temporarily by inflating and deflating the adjustable balloon, the occluding timed using parameters selected to create a physiologic stress that is sufficient to trigger an intrinsic myocardial protective mechanism. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification