Intravascular filter and method
First Claim
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1. A method for delivering an embolic protection filter, comprising the steps of:
- providing a filtering assembly, the assembly including an elongate shaft, a filter coupled to the shaft, and a sheath for delivering the filter, the sheath having a proximal section and a flared distal housing section;
disposing a portion of the filter within the sheath so that a proximal mouth portion of the filter is partially collapsed and disposed within the housing section and so that a tapered distal portion of the filter, including a porous filter material, extends at least in part distally out of the housing section;
advancing the filtering assembly through a blood vessel to a position adjacent a target site while the porous filter material extends at least in pan distally out of the housing section; and
proximally retracting the sheath relative to the filter so that the filter emerges from the sheath and expands within the blood vessel.
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Abstract
A filter disposed at the distal end of an elongate guidewire. Catheters are provided for delivering the filter to, and retrieving the filter from, a treatment site. The catheters can be over-the-wire or single operator exchange. The catheters include a housing for receiving the filter therein. The housing has an atraumatic distal end.
225 Citations
3 Claims
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1. A method for delivering an embolic protection filter, comprising the steps of:
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providing a filtering assembly, the assembly including an elongate shaft, a filter coupled to the shaft, and a sheath for delivering the filter, the sheath having a proximal section and a flared distal housing section; disposing a portion of the filter within the sheath so that a proximal mouth portion of the filter is partially collapsed and disposed within the housing section and so that a tapered distal portion of the filter, including a porous filter material, extends at least in part distally out of the housing section; advancing the filtering assembly through a blood vessel to a position adjacent a target site while the porous filter material extends at least in pan distally out of the housing section; and proximally retracting the sheath relative to the filter so that the filter emerges from the sheath and expands within the blood vessel. - View Dependent Claims (2, 3)
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Specification