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US 12,268,587 B2Granted
Intra vascular guidewire filter system for pulmonary embolism protection and embolism removal or maceration
AssigneeSurmodics MD, LLC
InventorsSamuel Morrison, Chad Stark
Life of this patent
Estimating the term…
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.
Claims19
A catheter assembly comprising:
- a guidewire extending from a guidewire proximal portion to a guidewire distal portion;
- first and second self-expanding deployable filters coupled with the guidewire, each of the first and second deployable filters include:
- a proximal filter end, and a distal filter end, wherein one of the proximal or distal filter ends is slidably coupled along the guidewire and the other of the proximal or distal filter ends is fixed to the guidewire;
- and
- component strands extending between the proximal and distal filter ends;
- wherein the first and second deployable filters include respective first and second filter strand profiles including the respective component strands, and the first filter strand profile is statically misaligned relative to the second filter strand profile according to fixing of the one of the proximal or distal filter ends to the guidewire;
- wherein the first and second deployable filters each have a cylindrical shape having proximal, distal and medial cylindrical portions;
- wherein at least one of the first or second deployable filters include at least first, second and third imaging markers, wherein:
- the first imaging marker is coupled at the proximal cylindrical portion of the cylindrical shape of the first or second deployable filters;
- the second imaging marker is coupled at the medial cylindrical portion of the cylindrical shape of the first or second deployable filters;
- and
- the third imaging marker is coupled at the distal cylindrical portion of the cylindrical shape of the first or second deployable filters, and at least two of the first, second or third imaging markers are unobscured in any orientation of the respective deployable filter in a deployed configuration;
- and
- a capture sleeve catheter movably coupled along the guidewire, the capture sleeve catheter includes:
- a positioning tube extending from a tube proximal portion to a tube distal portion, and the guidewire is slidably received within the positioning tube;
- a capture sleeve coupled with the tube distal portion;
- wherein the capture sleeve includes a tapered proximal section and a cylindrical barrel extending distally from the tapered proximal section, and in a deployed capture sleeve configuration the cylindrical barrel is configured to conform to a vessel profile between the tapered proximal section and a capture sleeve distal tip;
- and
- wherein the capture sleeve includes first and second stacked layers of braided filaments, and the first stacked layer extends from the tapered proximal section to an elbow proximate the capture sleeve distal tip, and the second stacked layer extends from the elbow toward the tapered proximal section.
16 more elements
A catheter assembly comprising:
- a guidewire extending from a guidewire proximal portion to a guidewire distal portion;
- one or more deployable filters coupled with the guidewire, the one or more deployable filters includes:
- a proximal filter end, and a distal filter end, wherein at least one of the proximal or distal filter ends is movably coupled along the guidewire;
- and
- component strands extending between the proximal and distal filter ends;
- and
- a capture sleeve catheter movably coupled along the guidewire, the capture sleeve catheter includes:
- a positioning tube extending from a tube proximal portion to a tube distal portion, and the guidewire is slidably received within the positioning tube;
- a capture sleeve coupled with the tube distal portion;
- wherein the capture sleeve includes a tapered proximal section and a cylindrical barrel extending distally from the tapered proximal section, and in a deployed capture sleeve configuration the cylindrical barrel is configured to conform to a vessel profile between the tapered proximal section and a capture sleeve distal tip;
- and
- wherein the capture sleeve includes first and second stacked layers of braided filaments, and the first stacked layer extends from the tapered proximal section to an elbow proximate the capture sleeve distal tip, and the second stacked layer extends from the elbow toward the tapered proximal section.
9 more elements
A catheter assembly comprising:
- a guidewire extending from a guidewire proximal portion to a guidewire distal portion;
- one or more self-expanding deployable filters coupled with the guidewire, each of the one or more deployable filters includes:
- a proximal filter end, and a distal filter end, wherein one of the proximal or distal filter ends is slidably coupled along the guidewire and the other of the proximal or distal filter ends is fixed to the guidewire;
- component strands extending between the proximal and distal filter ends;
- and
- wherein the first and second deployable filters include respective first and second filter strand profiles including the respective component strands, and the first filter strand profile is statically misaligned relative to the second filter strand profile according to fixing of the one of the proximal or distal filter ends to the guidewire;
- wherein the first and second deployable filters each have a cylindrical shape having proximal, distal, and medial cylindrical portions;
- wherein at least one of the first or second deployable filters include at least first, second and third imaging markers, wherein:
- the first imaging marker is coupled at the proximal cylindrical portion of the first or second deployable filters;
- the second imaging marker is coupled at the medial cylindrical portion of the first or second deployable filters;
- and
- the third imaging marker is coupled at a distal location along the cylindrical profile of the first or second deployable filters, and at least two of the first, second or third imaging markers are unobscured in any orientation of the respective deployable filter in a deployed configuration;
- a filter delivery catheter configured for movable coupling along the guidewire, the filter delivery catheter includes:
- a filter delivery operator including a hub having an interior socket, wherein the interior socket includes:
- a proximal section having a first dimension;
- and
- a distal section having a second dimension smaller than the first dimension;
- and
- a filter delivery tube extending from the filter delivery operator to a filter delivery tube distal portion;
- an installation brace configured for reception with the interior socket, the installation brace includes a brace wall surrounding a filter cavity, wherein the installation brace is configured to:
- retain the one or more deployable filters in a compressed configuration;
- align the one or more deployable filters with the distal section;
- and
- deliver the one or more deployable filters in the compressed configuration to the distal section of the filter delivery operator;
- and
- a capture sleeve catheter movably coupled along the guidewire, the capture sleeve catheter includes:
- a positioning tube extending from a tube proximal portion to a tube distal portion, and the guidewire is slidably received within the positioning tube;
- a capture sleeve coupled with the tube distal portion;
- wherein the capture sleeve includes a tapered proximal section and a cylindrical barrel extending distally from the tapered proximal section, and in a deployed capture sleeve configuration the cylindrical barrel is configured to conform to a vessel profile between the tapered proximal section and a capture sleeve distal tip;
- and
- wherein the capture sleeve includes first and second stacked layers of braided filaments, and the first stacked layer extends from the tapered proximal section to an elbow proximate the capture sleeve distal tip, and the second stacked layer extends from the elbow toward the tapered proximal section.
28 more elements
Dependencies are inferred from the claim text.