Partial aortic occlusion devices and methods for cerebral perfusion augmentation
First Claim
1. A method for increasing cerebral blood flow, comprising the steps of:
- inserting a catheter into the descending aorta, the catheter having a proximal end, a distal end, a first expandable member mounted on the distal end, and a second expandable member mounted on the distal end proximal the first expandable member;
locating the first expandable member upstream from the takeoff of the renal arteries;
locating the second expandable member downstream from the takeoff of the renal arteries; and
expanding the first expandable member to partially occlude blood flow in the aorta.
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Accused Products
Abstract
Methods are provided for partial aortic obstruction for cerebral perfusion augmentation in patients suffering from global or focal cerebral ischemia. Alternatively, the methods can be used to partially obstruct aortic blood flow to condition the spinal cord to secrete neuroprotective agents prior to abdominal aortic aneurysm repair. Partial obstruction of a vessel can be accomplished by a device comprising an elongate catheter and a distally mounted expandable member. The expandable member may comprise one or two balloons. Other medical devices, such as an angioplasty, stent, or atherectomy catheter, can be inserted distal the expandable member to provide therapeutic intervention.
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Citations
17 Claims
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1. A method for increasing cerebral blood flow, comprising the steps of:
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inserting a catheter into the descending aorta, the catheter having a proximal end, a distal end, a first expandable member mounted on the distal end, and a second expandable member mounted on the distal end proximal the first expandable member;
locating the first expandable member upstream from the takeoff of the renal arteries;
locating the second expandable member downstream from the takeoff of the renal arteries; and
expanding the first expandable member to partially occlude blood flow in the aorta. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A medical device for partial aortic occlusion for cerebral perfusion augmentation, comprising:
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an elongate member having proximal and distal ends and proximal and distal regions, the distal region having a greater flexibility than the proximal region;
a first expandable member mounted at the distal end of the elongate member;
a second expandable member mounted at the distal end of the elongate member proximal the first expandable member; and
a pressure measuring device operable to measure blood pressure in the aorta upstream the second expandable member, wherein, during use, the flexible distal region allows the elongate member to conform to the descending aorta while the first and second expandable members are positioned in the descending aorta downstream of the left subclavian artery and are at least partially expanded to increase cerebral perfusion, and the proximal region provides stability to prevent migration during use. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification