Intravascular guidewire filter system for pulmonary embolism protection and embolism removal or maceration
First Claim
Patent Images
1. An intravascular guidewire filter system comprising:
- a delivery tube;
a positioning tube having a proximal end and a distal end;
a flexible capture sleeve having an expanded conformation and an unexpanded conformation and a proximal end and a distal end, said proximal end of said flexible capture sleeve is attached to said distal end of said positioning tube, the flexible capture sleeve being constructed of a woven mesh;
a guidewire having a proximal end and a distal end; and
at least two flexible preformed memory shaped filters attached to said guidewire, wherein said delivery tube, said flexible capture sleeve, and said guidewire form a telescopic system, and wherein distal progressive distal positioning of the delivery tube forcibly compresses the flexible capture sleeve, an underlying proximal filter and embolic debris which has been captured within the proximal filter, thereby dividing and macerating the embolic debris.
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Abstract
An intravascular emboli capture and retrieval system for intravascular embolism protection and embolism removal or maceration. Guidewire mounted proximally and distally located multiple opening filters are deployed within the vasculature and used to part, divide and macerate embolic debris and to capture such embolic debris within the confines thereof. A deployable flexible preformed memory shaped capture sleeve is alternatively used to collapse one or more filters and embolic debris therein for subsequent proximal withdrawal from the vasculature.
130 Citations
16 Claims
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1. An intravascular guidewire filter system comprising:
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a delivery tube; a positioning tube having a proximal end and a distal end; a flexible capture sleeve having an expanded conformation and an unexpanded conformation and a proximal end and a distal end, said proximal end of said flexible capture sleeve is attached to said distal end of said positioning tube, the flexible capture sleeve being constructed of a woven mesh; a guidewire having a proximal end and a distal end; and at least two flexible preformed memory shaped filters attached to said guidewire, wherein said delivery tube, said flexible capture sleeve, and said guidewire form a telescopic system, and wherein distal progressive distal positioning of the delivery tube forcibly compresses the flexible capture sleeve, an underlying proximal filter and embolic debris which has been captured within the proximal filter, thereby dividing and macerating the embolic debris. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An intravascular guidewire filter system comprising,
a delivery tube; -
a positioning tube having a proximal end and a distal end; a flexible capture sleeve having an expanded conformation and an unexpanded conformation and a proximal end and a distal end, said proximal end of said flexible capture sleeve is attached to said distal end of said positioning tube, the flexible capture sleeve being constructed of a woven mesh; a guidewire having a proximal end and a distal end; and at least two flexible preformed memory shaped filters attached to said guidewire, wherein said delivery tube, said flexible capture sleeve, and said guidewire form a telescopic system, and wherein distal progressive distal positioning of the delivery tube forcibly compresses the flexible capture sleeve, an underlying proximal filter and embolic debris which has been captured within the proximal filter, thereby elongating the embolic debris.
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Specification