Embolic filter loop fabricated from composite material
First Claim
1. An embolic protection filter for collecting embolic debris within a blood vessel, said embolic protection filter comprising:
- a support structure including a composite member having at least a first layer formed of a first material, and a second layer formed of a second material different than the first material, the second material having a radiographic density greater than the first material to enhance the visibility of the embolic protection filter; and
a filter membrane operatively coupled to the support structure.
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Accused Products
Abstract
Embolic protection filters formed from composite materials exhibiting certain radiopaque and elasticity characteristics are disclosed. An embolic protection filter in accordance with an exemplary embodiment of the present invention may include a support structure formed of a composite member having a first layer of relatively elastic material such as superelastic nickel-titanium alloy, and a second layer formed from a relatively dense, radiopaque material. The support structure may comprise a composite wire loop that is connected to a filter membrane that collects embolic debris contained in the blood. The composite wire loop may be formed at least in part of a shape-memory material configured to self-expand to a circular shape when deployed in the body. Methods of forming the support structure are also disclosed.
221 Citations
35 Claims
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1. An embolic protection filter for collecting embolic debris within a blood vessel, said embolic protection filter comprising:
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a support structure including a composite member having at least a first layer formed of a first material, and a second layer formed of a second material different than the first material, the second material having a radiographic density greater than the first material to enhance the visibility of the embolic protection filter; and
a filter membrane operatively coupled to the support structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An embolic protection filter for collecting embolic debris within a blood vessel, said embolic protection filter comprising:
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a support structure forming a proximal mouth of the embolic protection filter, said support structure including a composite member having at least a first layer formed of a first material, and a second layer formed of a second material different than the first material, the second material having a radiographic density greater than the first material to enhance the visibility of the embolic protection filter; and
a filter membrane operatively coupled to the support structure. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. An embolic protection filter for collecting embolic debris within a blood vessel, said embolic protection filter comprising:
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a support structure forming a proximal mouth of the embolic protection filter, said support structure comprising a composite member having at least a first layer formed of a first material, and a second layer formed of a second material different than said first material, the first material formed of a superelastic alloy having shape-memory characteristics at body temperature, the second material having a radiographic density greater than the first material to enhance the visibility of the embolic protection filter; and
a filter membrane operatively coupled to the support structure.
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34. An embolic protection filter for collecting embolic debris within a blood vessel, said embolic protection filter comprising:
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a composite wire loop forming a proximal mouth of the embolic protection filter, said composite wire loop comprising at least one outer layer formed of a first material, and an inner layer formed of a second material different than said first material, the first material formed of a superelastic alloy having shape-memory characteristics at body temperature, the second material having a radiographic density greater than the first material to enhance the visibility of the embolic protection filter; and
a filter membrane operatively coupled to the support structure.
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35. An embolic protection filter for collecting embolic debris within a blood vessel, said embolic protection filter comprising:
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a composite wire loop forming a proximal mouth of the embolic protection filter, said composite wire loop comprising at least one outer layer formed of a first material, and an inner layer formed of a second material different than said first material, the first material formed of a radiopaque material configured to enhance the visibility of the embolic protection filter, the second material comprising a superelastic alloy having shape-memory characteristics at body temperature; and
a filter membrane operatively coupled to the support structure.
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Specification