Partial aortic occlusion devices and methods for cerebral perfusion augmentation
First Claim
1. A medical device, comprising:
- an elongate tubular member having a proximal end, a distal end, and a lumen therebetween; and
an elongate non-spherical balloon mounted on the distal end of the elongate tubular member and communicating with the lumen, the balloon having a compliance of approximately 0.3-1.25 mm per psi and configured such that it has an initial wrinkle-free diameter of approximately 10-15 mm, and thereafter expands upon inflation, and wherein the balloon is approximately 3-6 cm in length.
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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.
71 Citations
16 Claims
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1. A medical device, comprising:
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an elongate tubular member having a proximal end, a distal end, and a lumen therebetween; and
an elongate non-spherical balloon mounted on the distal end of the elongate tubular member and communicating with the lumen, the balloon having a compliance of approximately 0.3-1.25 mm per psi and configured such that it has an initial wrinkle-free diameter of approximately 10-15 mm, and thereafter expands upon inflation, and wherein the balloon is approximately 3-6 cm in length. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for increasing cerebral blood flow, comprising the steps of:
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providing an elongate tubular member having a proximal end, a distal end, a lumen therebetween, and an elongate non-spherical balloon approximately 3-6 cm in length mounted on the distal end of the elongate tubular member and communicating with the lumen, the balloon having a compliance of approximately 0.3-1.25 mm per psi and configured such that it has an initial wrinkle-free diameter of approximately 10-15 mm, and thereafter expands upon inflation;
inserting the elongate tubular member into the descending aorta;
locating the balloon downstream from the takeoff of the brachiocephalic artery; and
expanding the balloon to at least partially obstruct blood flow in the aorta.
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- 8. The method of claim 8, further comprising the step of measuring cerebral blood flow before the step of expanding the balloon to at least partially obstruct blood flow in the aorta.
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10. The method of claim 10, further comprising the step of adjusting the expansion of the expandable member based on measured cerebral blood flow.
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11. A medical device, comprising:
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an elongate tubular member having a proximal end, a distal end, and a lumen therebetween; and
an elongate non-spherical balloon mounted on the distal end of the elongate tubular member and communicating with the lumen, the balloon having an initial wrinkle-free diameter of approximately 10-15 mm, and thereafter expands upon inflation, and wherein the balloon is approximately 3-6 cm in length. - View Dependent Claims (12, 13, 14, 15, 16)
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Specification