Embolic protection system
First Claim
1. An embolic protection system comprising:
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a guidewire for advancing through a vasculature, the guidewire having a distal end and a proximal end;
an embolic protection filter having a filter body with a distal end and a proximal end, the filter body providing for a collapsed configuration and an expanded deployed configuration;
the embolic protection filter body having a guidewire path for slidably receiving the guidewire to permit movement of the filter relative to the guidewire when the filter is in the collapsed configuration and the expanded deployed configuration;
a delivery catheter advanceable over the guidewire for delivery of the embolic protection filter;
the delivery catheter having a proximal end and a distal end, the filter being deployed from the distal end of the delivery catheter into the expanded deployed configuration;
a retrieval catheter advancable over the guidewire for retrieval of the filter, the retrieval catheter having a distal end and a proximal end; and
engagement elements for engaging the embolic protection filter with the guidewire for retrieval of the filter into the retrieval catheter in the collapsed configuration.
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Accused Products
Abstract
An embolic protection system 1 comprises a guidewire 99 for advancing through a vasculature, the guidewire 99 having a distal end and a proximal end; an embolic protection filter 1 having a filter body 41 with a distal end and a proximal end, the filter body 41 providing for a collapsed configuration and an expanded deployed configuration. The embolic protection filter body 41 has a guidewire path for slidably receiving the guidewire 99 to permit movement of the filter 1 relative to the guidewire 99 when the filter 1 is in the collapsed configuration and the expanded deployed configuration. A delivery catheter 2 is advanceable over the guidewire 99 for delivery of the embolic protection filter 1; the delivery catheter 2 having a proximal end and a distal end. The filter 1 is deployed from the distal end of the delivery catheter 2 into the expanded deployed configuration. A retrieval catheter 3 is also advancable over the guidewire 99 for retrieval of the filter 1, the retrieval catheter 3 having a distal end and a proximal end; and engagement elements for engaging the embolic protection filter 1 with the guidewire 99 for retrieval of the filter 1 into the retrieval catheter 3 in the collapsed configuration.
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Citations
67 Claims
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1. An embolic protection system comprising:
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a guidewire for advancing through a vasculature, the guidewire having a distal end and a proximal end;
an embolic protection filter having a filter body with a distal end and a proximal end, the filter body providing for a collapsed configuration and an expanded deployed configuration;
the embolic protection filter body having a guidewire path for slidably receiving the guidewire to permit movement of the filter relative to the guidewire when the filter is in the collapsed configuration and the expanded deployed configuration;
a delivery catheter advanceable over the guidewire for delivery of the embolic protection filter;
the delivery catheter having a proximal end and a distal end, the filter being deployed from the distal end of the delivery catheter into the expanded deployed configuration;
a retrieval catheter advancable over the guidewire for retrieval of the filter, the retrieval catheter having a distal end and a proximal end; and
engagement elements for engaging the embolic protection filter with the guidewire for retrieval of the filter into the retrieval catheter in the collapsed configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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21. An embolic protection system as claimed in claim 21 wherein the deployment means comprises a tube which is advancable over the guidewire for engagement with the proximal end of the filter, the tube being movable longitudinally relative to the delivery catheter for deployment of the filter from the distal end of the delivery catheter.
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35. An embolic protection system substantially as hereinbefore described with reference to the accompanying drawings.
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36. A method for the capture and removal of embolic material from a blood vessel during an interventional procedure comprising the steps of:
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advancing a guidewire through a vasculature;
crossing a desired treatment location with the guidewire;
introducing over the guidewire a collapsible embolic protection filter having a collapsed configuration, the collapsed configuration permitting delivery and withdrawal of the filter;
deploying the filter distal to the treatment location;
carrying out the interventional procedure, embolic material generated during the treatment procedure being captured by the deployed filter;
advancing a retrieval catheter over the guidewire;
collapsing the filter into the retrieval catheter and with it the captured embolic material;
withdrawing the retrieval catheter and the collapsed filter from the vasculature leaving the guidewire in the vasculature. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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48. A method for the capture and removal of embolic material from a blood vessel substantially as hereinbefore described with reference to the accompanying drawings.
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49. A medical catheter for transvascular delivery and deployment of an embolic protection filter, the catheter comprising:
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an outer catheter tube defining a distal end; and
an inner catheter tube defining a distal end;
the outer tube being at least partially movable relative to the inner tube between a delivery configuration in which the distal end of the outer tube extends distally of the distal end of the inner tube to define a reception space for an embolic protection filter within the outer tube, and a deployment configuration in which the distal end of the inner tube extends distally of the distal end of the outer tube for deployment of the embolic protection filter;
the inner catheter tube providing compressive resistance and the outer catheter tube providing stretch resistance. - View Dependent Claims (50, 51, 52, 53, 54, 55, 56, 57, 58, 59)
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60. A medical catheter for transvascular delivery and deployment of an embolic protection filter substantially as hereinbefore described with reference to the accompanying drawings.
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61. An embolic protection device comprising:
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a collapsible filter element for delivery through a vascular system of a patient;
the filter element comprising a collapsible filter body and a collapsible filter support frame contacting the filter body;
the filter body having an inlet end and an outlet end, the inlet end of the filter body having one or more inlet openings sized to allow blood and embolic material enter the filter body, the outlet end of the filter body having a plurality of outlet openings sized to allow through passage of blood but to retain undesired embolic material within the filter body;
the filter support frame being movable between a collapsed position for movement through the vascular system and an extended outwardly projecting position to support the filter body in an expanded position;
the frame having an intermediate section to urge the filter body in the expanded position into apposition with a vessel wall, and a proximal section extending radially inwardly of the intermediate section;
at least part of the proximal section of the frame being spaced distally to accommodate inflow of embolic material through the inlet openings in the expanded position. - View Dependent Claims (62, 63, 64, 65, 66)
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67. An embolic protection device substantially as hereinbefore described with reference to the accompanying drawings.
Specification