Embolic protection system and method including filtering elements
First Claim
1. A system for capturing embolic material which may be released into a blood vessel during a therapeutic interventional procedure, comprising:
- a shaft, adapted to be positionable within the blood vessel and distal to an interventional procedure site, wherein the shaft has proximal and distal ends; and
a filter, adapted to be located in a distal end portion of the shaft, to be deployed distal to the interventional procedure site, and to pass blood therethrough and to capture embolic material which may be released into the blood in the blood vessel during the interventional procedure, wherein the filter includes elements for filtering embolic material, adapted to be expandable to capture embolic material, and to be collapsible to retain the captured embolic material, and wherein the filtering elements include a plurality of bristles permanently attached and extending from a section of the distal end portion of the shaft, and adapted to capture embolic material.
1 Assignment
0 Petitions
Accused Products
Abstract
A system used in a blood vessel when an interventional procedure is being performed in a stenosed or occluded region to capture any embolic material which may be created and released into the bloodstream during the procedure. The system includes filtering elements which are capable of occluding a blood vessel distal to an interventional procedure site, while enabling the blood to flow past the occlusion and filtering the blood to capture embolic material which may be released into the blood during a therapeutic interventional procedure. The filtering elements include an expandable member which is capable of being expanded distal to the area of treatment at the interventional procedure site for occluding the blood vessel and for enabling the blood to pass therethrough while preventing emboli from passing therethrough. The system also includes a sheath movable distally and proximally to enable the filtering elements to expand into position distal to the interventional procedure site for capturing embolic material and to collapse the filtering elements to retain the captured embolic material therein.
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Citations
30 Claims
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1. A system for capturing embolic material which may be released into a blood vessel during a therapeutic interventional procedure, comprising:
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a shaft, adapted to be positionable within the blood vessel and distal to an interventional procedure site, wherein the shaft has proximal and distal ends; and
a filter, adapted to be located in a distal end portion of the shaft, to be deployed distal to the interventional procedure site, and to pass blood therethrough and to capture embolic material which may be released into the blood in the blood vessel during the interventional procedure, wherein the filter includes elements for filtering embolic material, adapted to be expandable to capture embolic material, and to be collapsible to retain the captured embolic material, and wherein the filtering elements include a plurality of bristles permanently attached and extending from a section of the distal end portion of the shaft, and adapted to capture embolic material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of capturing embolic material which may be released into a blood vessel during a therapeutic interventional procedure, in a system which comprises a shaft, adapted to be positionable within the blood vessel and distal to an interventional procedure site, wherein the shaft has proximal and distal ends, and a filter, adapted to be located in a distal end portion of the shaft, to be deployed distal to the interventional procedure site, and to pass blood therethrough and to capture embolic material which may be released into the blood in the blood vessel during the interventional procedure, wherein the filter includes elements for filtering embolic material, adapted to be expandable to capture embolic material, and to be collapsible to retain the captured embolic material, wherein the filtering elements include a plurality bristles permanently attached and extending from a section of the distal end portion of the shaft, and adapted to capture embolic material, wherein the method comprises:
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positioning the shaft in the interventional procedure site such that the filter is located within the blood vessel in the region at a location distal to the interventional procedure site;
expanding the plurality of bristles within the blood vessel at the location distal to the interventional procedure site so as to enable the capture of embolic material;
performing the interventional procedure, which may release embolic material into the blood;
filtering the blood through the plurality of bristles so as to capture embolic material which may be released into the blood upon performing the interventional procedure; and
collapsing the filtering elements so as to retain the captured embolic material. - View Dependent Claims (17)
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18. A system for capturing embolic material which may be released into a blood vessel during a therapeutic interventional procedure, comprising:
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a shaft, adapted to be positionable within the blood vessel and distal to an interventional procedure site, wherein the shaft has proximal and distal ends; and
a filter, adapted to be located in a distal end portion of the shaft, to be deployed distal to the interventional procedure site, and to pass blood therethrough and to capture embolic material which may be released into the blood in the blood vessel during the interventional procedure, wherein the filter includes elements for filtering embolic material, adapted to be expandable to capture embolic material, and to be collapsible to retain the captured embolic material, wherein the filtering elements include a plurality of bristles, extending from a section of the distal end portion of the shaft, and adapted to capture embolic material, and wherein the filtering elements further include a net located distal of the plurality of bristles and adapted to be deployed to capture embolic material. - View Dependent Claims (19, 20)
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21. A system for capturing embolic material which may be released into a blood vessel during a therapeutic interventional procedure, comprising:
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a shaft, adapted to be positionable within the blood vessel and distal to an interventional procedure site, wherein the shaft has proximal and distal ends; and
a filter, adapted to be located in a distal end portion of the shaft, to be deployed distal to the interventional procedure site, and to pass blood therethrough and to capture embolic material which may be released into the blood in the blood vessel during the interventional procedure, wherein the filter includes elements for filtering embolic material, adapted to be expandable to capture embolic material, and to be collapsible to retain the captured embolic material, wherein the filtering elements include a plurality of bristles, extending from a section of the distal end portion of the shaft, and adapted to capture embolic material, wherein the filtering elements further include a net located distal of the bristles and adapted to be deployed to capture generally small embolic material. - View Dependent Claims (22, 23, 24)
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25. A method of capturing embolic material which may be released into a blood vessel during a therapeutic interventional procedure, in a system which comprises a shaft, adapted to be positionable within the blood vessel and distal to an interventional procedure site, wherein the shaft has proximal and distal ends, and a filter, adapted to be located in a distal end portion of the shaft, to be deployed distal to the interventional procedure site, and to pass blood therethrough and to capture embolic material which may be released into the blood in the blood vessel during the interventional procedure, wherein the filter includes elements for filtering embolic material, adapted to be expandable to capture embolic material, and to be collapsible to retain the captured embolic material, wherein the filtering elements include a plurality of bristles, extending from a section of the distal end portion of the shaft, and adapted to capture embolic material, and wherein the filtering elements further include a net located distal of the bristles and adapted to be deployed to capture embolic material, wherein the method comprises:
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positioning the shaft in the interventional procedure site such that the filter is located within the blood vessel in the region at a location distal to the interventional procedure site;
expanding the filtering elements within the blood vessel at the location distal to the interventional procedure site so as to enable the capture of embolic material;
performing the interventional procedure, which may release embolic material into the blood;
filtering the blood through the filtering elements so as to capture embolic material which may be released into the blood upon performing the interventional procedure, further comprising filtering the blood through the bristles to capture embolic material, and filtering the blood through the net to capture embolic material; and
collapsing the filtering elements so as to retain the captured embolic material.
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26. A method of capturing embolic material which may be released into a blood vessel during a therapeutic interventional procedure, in a system which comprises a shaft, adapted to be positionable within the blood vessel and distal to an interventional procedure site, wherein the shaft has proximal and distal ends, and a filter, adapted to be located in a distal end portion of the shaft, to be deployed distal to the interventional procedure site, and to pass blood therethrough and to capture embolic material which may be released into the blood in the blood vessel during the interventional procedure, wherein the filter includes elements for filtering embolic material, adapted to be expandable to capture embolic material, and to be collapsible to retain the captured embolic material, wherein the filtering elements include a plurality of bristles, extending from a section of the distal end portion of the shaft, and adapted to capture embolic material, wherein the filtering elements further include a net located distal of the bristles and adapted to be deployed to capture generally small embolic material, wherein the method comprises:
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positioning the shaft in the interventional procedure site such that the filter is located within the blood vessel in the region at a location distal to the interventional procedure site;
expanding the bristles within the blood vessel at the location distal to the interventional procedure site so as to capture embolic material;
performing the interventional procedure, which may release embolic material into the blood;
filtering the blood through the bristles so as to capture embolic material which may be released into the blood upon performing the interventional procedure, further comprising filtering the blood through the net to capture embolic material; and
collapsing the bristles so as to retain the captured embolic material. - View Dependent Claims (27, 28, 29, 30)
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Specification