Aortic occluder with tensioned balloons
First Claim
Patent Images
1. A catheter, comprising:
- an elongate member having proximal and distal ends and proximal and distal regions;
at least a first expandable member mounted on the distal region of the elongate member, the first expandable member being inflatable with fluid through at least one lumen in the elongate member to cause the first expandable member to expand from an empty configuration to an expanded configuration, the first expandable member being disposed on the elongate member in first tension such that the first expandable member is pre-loaded with tensile stress in the empty configuration;
at least a second expandable member mounted on the distal region of the elongate member, the second expandable member being inflatable with fluid through at least one lumen in the elongate member to cause the second expandable member to expand from an empty configuration to an expanded configuration, the second expandable member being disposed on the elongate member in second tension such that the second expandable member is pre-loaded with tensile stress in the empty configuration, the first and second tensions being different from each other.
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Abstract
An aortic occluder catheter with expandable balloons for increasing cerebral blood blow has one or more balloons on a catheter shaft. To assist the balloon in bearing up against arterial blood flow while positioned retrograde in the aorta, the balloon is bonded to the catheter shaft in tension.
36 Citations
19 Claims
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1. A catheter, comprising:
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an elongate member having proximal and distal ends and proximal and distal regions; at least a first expandable member mounted on the distal region of the elongate member, the first expandable member being inflatable with fluid through at least one lumen in the elongate member to cause the first expandable member to expand from an empty configuration to an expanded configuration, the first expandable member being disposed on the elongate member in first tension such that the first expandable member is pre-loaded with tensile stress in the empty configuration; at least a second expandable member mounted on the distal region of the elongate member, the second expandable member being inflatable with fluid through at least one lumen in the elongate member to cause the second expandable member to expand from an empty configuration to an expanded configuration, the second expandable member being disposed on the elongate member in second tension such that the second expandable member is pre-loaded with tensile stress in the empty configuration, the first and second tensions being different from each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A medical device for partial aortic occlusion for cerebral perfusion augmentation, comprising:
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a catheter body; and at least a first expandable balloon disposed on the catheter body in tension prior to expansion of the first expandable balloon under the influence of an inflation fluid; and at least a second expandable balloon disposed on the catheter body in tension prior to expansion of the second expandable balloon under the influence of an inflation fluid, the second expandable balloon being disposed in tension on the catheter body in less stress than the first expandable balloon. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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Specification