Occlusion catheter having compliant balloon for use with complex vasculature
First Claim
1. A method for treating an aneurysm in complex vasculature having two or more branches in a mammal which method comprises:
- identifying an aneurysm in such vasculature of said mammal;
providing a catheter comprising a substantially tubular structure with at least one lumen and a single compliant vascular balloon located at the distal portion of said tubular structure and in fluid communication with said lumen wherein said balloon expands and deforms at a pressure less than the pressure required to deform the vascular wall in the vicinity of the aneurysm;
inserting the catheter into the complex blood vessel associated with said aneurysm wherein the distal portion of said catheter is located at a position such that upon expansion of said balloon blood flow into the aneurysm is either attenuated and/or diverted prior to deformation of the vascular wall;
expanding the balloon at a pressure up to about 600 mm Hg such that the balloon attenuates blood flow into the aneurysm while not deforming the vascular wall or penetrating into the opening, or neck of the aneurysmal sac in a manner that prevents effective treatment of the aneurysm; and
treating said aneurysm by injecting through a separate catheter an embolizing agent which inhibits blood flow into the aneurysm.
3 Assignments
0 Petitions
Accused Products
Abstract
A catheter used for treatment of complex vasculature, such as a bifurcated aneurysm, is provided with an inflatable balloon at a distal portion thereof. The shape, location and material of the inflatable balloon are selected such that when inflated, the balloon conforms to the shape of the complex vasculature, or at least a portion thereof, without appreciably deforming the vessel walls. In this manner, the balloon can be used to control flow in the vasculature, for example occluding a selected branch of the vasculature during introduction of material in order concentrate the material and minimize its disbursement by blood flow.
69 Citations
18 Claims
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1. A method for treating an aneurysm in complex vasculature having two or more branches in a mammal which method comprises:
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identifying an aneurysm in such vasculature of said mammal; providing a catheter comprising a substantially tubular structure with at least one lumen and a single compliant vascular balloon located at the distal portion of said tubular structure and in fluid communication with said lumen wherein said balloon expands and deforms at a pressure less than the pressure required to deform the vascular wall in the vicinity of the aneurysm; inserting the catheter into the complex blood vessel associated with said aneurysm wherein the distal portion of said catheter is located at a position such that upon expansion of said balloon blood flow into the aneurysm is either attenuated and/or diverted prior to deformation of the vascular wall; expanding the balloon at a pressure up to about 600 mm Hg such that the balloon attenuates blood flow into the aneurysm while not deforming the vascular wall or penetrating into the opening, or neck of the aneurysmal sac in a manner that prevents effective treatment of the aneurysm; and treating said aneurysm by injecting through a separate catheter an embolizing agent which inhibits blood flow into the aneurysm. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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2. A method for treating an aneurysm formed in the vascular wall of a region of complex vasculature having two or more branches in a mammalian patient, the aneurysm being formed in the vicinity of at least one lumen defined by a blood vessel associated with the aneurysm, comprising:
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identifying an aneurysm in a region of complex vasculature having two or more branches in said mammalian patient; introducing a single compliant balloon into the vicinity of the aneurysm, the balloon being provided on a catheter which comprises a substantially tubular structure having at least one lumen in communication with the balloon, at least a portion of said balloon comprising a material which inflates and deforms at a pressure which is less than the pressure required to deform the vascular wall in which the bifurcated aneurysm is formed; inflating the balloon at a pressure up to about 600 mm Hg such that blood flow into the aneurysm is attenuated and/or diverted while not deforming the vascular wall or penetrating into the opening, or neck of the aneurysmal sac in a manner that prevents effective treatment of the aneurysm; and treating said aneurysm by injecting through a separate catheter an embolizing agent which inhibits blood flow into the aneurysm.
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Specification