Intravascular filter and associated methodology
First Claim
1. An intravascularly deployable device for collecting intravascular debris, comprising a collector body expandable from a collapsed insertion configuration to an expanded use configuration, said use configuration of said body tapering down from a maximum cross-sectional area to a minimal cross-sectional area at a downstream end of said body, said body being provided at said downstream end with an access port to removably connect an elongate debris removal instrument to said body so that said instrument can traverse said access port to remove debris from said body after disposition of the intravascularly deployable device inside a blood vessel of a patient, said access port taking the form of a sleeve extending in a downstream direction from said body said sleeve being beveled to taper down from a maximal transverse outside dimension at an upstream end to a minimal transverse outside dimension at a downstream end.
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Abstract
An intravascularly deployable device in the nature of a filter for collecting intravascular debris includes a filter or collector body expandable from a collapsed insertion configuration to an expanded use configuration. The use configuration of the filter body tapers down from a maximum cross-sectional area to a minimal cross-sectional area at a downstream end of the filter body. The filter body is provided at the downstream end with an access port so that the instrument can traverse the access port to remove debris from the filter body after disposition of the intravascularly deployable device inside a blood vessel of a patient. The access port takes the form of a sleeve or chimney which is beveled to taper down from a maximal transverse dimension at an upstream end to a minimal transverse dimension at a downstream end. The beveled or tapered sleeve is especially useful in locating or guiding the distal end of the debris removal instrument onto the downstream end of the filter body during a shifting of the instrument in the upstream direction towards the filter body.
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Citations
31 Claims
- 1. An intravascularly deployable device for collecting intravascular debris, comprising a collector body expandable from a collapsed insertion configuration to an expanded use configuration, said use configuration of said body tapering down from a maximum cross-sectional area to a minimal cross-sectional area at a downstream end of said body, said body being provided at said downstream end with an access port to removably connect an elongate debris removal instrument to said body so that said instrument can traverse said access port to remove debris from said body after disposition of the intravascularly deployable device inside a blood vessel of a patient, said access port taking the form of a sleeve extending in a downstream direction from said body said sleeve being beveled to taper down from a maximal transverse outside dimension at an upstream end to a minimal transverse outside dimension at a downstream end.
- 16. An intravascularly deployable device for collecting intravascular debris, comprising a collector body expandable from a collapsed insertion configuration to an expanded use configuration, said use configuration of said body tapering down from a maximum cross-sectional area to a minimal cross-sectional area at a downstream end of said body, said body being provided at said downstream end with an access sleeve to removably connect an elongate debris removal instrument to said body so that said instrument can traverse said sleeve to remove debris from said body after disposition of the intravascularly deployable device inside a blood vessel of a patient, said sleeve having a longitudinal axis, a rod being connected to said sleeve at a downstream end thereof, said rod extending substantially parallel to said axis, eccentrically relative to said sleeve.
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18. An intravascularly deployable assembly for collecting intravascular debris, comprising:
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a collector body expandable from a collapsed insertion configuration to an expanded use configuration, said use configuration of said collector body tapering down from a maximum cross-sectional area to a minimal cross-sectional area at a downstream end of said collector body, said collector body being provided at said downstream end with a sleeve extending from said collector body in a downstream direction; and an elongate tubular debris removal member removably connected to said collector body via said sleeve, said sleeve being substantially shorter than said tubular debris removal member and not substantially longer than said collector body, said sleeve being inserted in an upstream end of said tubular debris removal member. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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25. A method for collecting intravascular debris, comprising:
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inserting, into a blood vessel of a patient, a tubular member carrying a filter device in a collapsed insertion configuration in a distal end of said tubular member; after insertion of said tubular member into the patient'"'"'s blood vessel, ejecting said filter device from said distal end of said tubular member; expanding the ejected filter device from said collapsed insertion configuration to an expanded use configuration, said use configuration of said filter device tapering down from a maximum cross-sectional area to a minimal cross-sectional area at a downstream end of said filter device, said filter device being provided at said downstream end with a sleeve extending from said filter device in a downstream direction, said sleeve being substantially shorter than said tubular member and not substantially longer than said filter device; inserting an elongate debris removal instrument through said tubular member so that an operative head of said instrument is inserted through said sleeve into said filter device; operating said instrument to remove collected vascular debris from said filter device; and maintaining said sleeve inserted in said distal end of said tubular member during the insertion of said instrument and during operation of said instrument. - View Dependent Claims (26, 27, 28, 29)
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30. A method for collecting intravascular debris, comprising:
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deploying a collector body in a blood vessel of a patient so that said body tapers down from a maximum cross-sectional area to a minimal cross-sectional area at a downstream end of said body and so that a sleeve provided on said collector body at said downstream end thereof extends in a downstream direction from said body, said sleeve having a free end opposite said collector body, said free end being disposed completely within said blood vessel; after the deploying of said collector body in said blood vessel, collecting vascular debris in said collector body; after the collecting of the vascular debris in said collector body, removably connecting an elongate debris removal instrument to said collector body via said sleeve; and operating the connected debris removal instrument to remove the collected vascular debris from said collector body via said sleeve. - View Dependent Claims (31)
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Specification