Integrated embolic protection devices
First Claim
1. A method for introducing a catheter through an access sheath having integrated embolic protection, said method comprising:
- positioning the access sheath in a blood vessel with an open distal end of the access sheath directed against the direction of blood flow;
deploying an embolic filter about the open distal end of the access sheath, wherein a cylindrical outer portion of the embolic filter contacts a wall of the blood vessel and a conical inner portion defines a collection chamber between an inner surface of the cylindrical outer portion and an outer surface of the conical inner portion, wherein the conical inner portion is oriented to collect emboli in the blood in the collection chamber; and
introducing a catheter through a lumen of the access sheath while the embolic filter remains deployed about the open distal end of the access sheath.
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Accused Products
Abstract
Embolic Protection elements are integrated with a catheter or access sheath for any catheter. A catheter shaft has an embolic filter slidably mounted on a distal portion of a catheter shaft. A proximal stop for limits proximal movement of the embolic filter, and a distal stop for limits distal movement of the embolic filter. The filter has a porous mesh material defining a collection chamber for captured emboli and has a collapsed and a deployed configuration. The filter may be collapsed by an access sheath used with the catheter. An access sheath may have a tubular main body and an embolic filter mounted on the distal portion of the tubular main body. The embolic filter may evert into the central lumen of the sheath or may be constrained on the exterior of the sheath with a larger diameter outer tube.
78 Citations
16 Claims
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1. A method for introducing a catheter through an access sheath having integrated embolic protection, said method comprising:
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positioning the access sheath in a blood vessel with an open distal end of the access sheath directed against the direction of blood flow; deploying an embolic filter about the open distal end of the access sheath, wherein a cylindrical outer portion of the embolic filter contacts a wall of the blood vessel and a conical inner portion defines a collection chamber between an inner surface of the cylindrical outer portion and an outer surface of the conical inner portion, wherein the conical inner portion is oriented to collect emboli in the blood in the collection chamber; and introducing a catheter through a lumen of the access sheath while the embolic filter remains deployed about the open distal end of the access sheath. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for introducing a catheter through an access sheath having integrated embolic protection, said method comprising:
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positioning the access sheath in a blood vessel with an open distal end of the access sheath directed against the direction of blood flow; deploying an embolic filter about the open distal end of the access sheath, wherein a cylindrical outer portion of the embolic filter contacts a wall of the blood vessel and a conical inner portion defines a collection chamber between an inner surface of the cylindrical outer portion and an outer surface of the conical inner portion, wherein the conical inner portion is oriented to collect emboli in the blood in the collection chamber; and introducing a catheter through a lumen of the access sheath while the embolic filter remains deployed about the open distal end of the access sheath; and wherein a distal end of the conical inner portion of the filter is fixedly attached to the open distal end of the access sheath and a distal end of the cylindrical outer portion of the filter is open and free of attachment to the access sheath. - View Dependent Claims (15, 16)
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Specification