Self-centering catheter and method of using same
First Claim
Patent Images
1. A self-centering vena cava filter catheter, comprising:
- a catheter body with a distal end and a proximal end, the catheter body having a first opening in communication with a first lumen of the catheter body and a second opening in communication with a second lumen of the catheter body; and
an expansible vena cava filter member coupled to and circumferentially surrounding the catheter body such that the catheter body is generally centered within the vena cava filter member, the expansible vena cava filter member consisting essentially of a plurality of longitudinal struts forming a first cone co-axial with the catheter member and a second cone co-axial with the catheter member and extending in a direction opposite the first cone, the first cone being configured with a first open area sufficient to permit thrombus to pass into an area bounded by the plurality of longitudinal struts and the second cone being configured with a second open area sufficient to capture thrombus passing into the area bounded by the plurality of longitudinal struts, the first and second open areas having different sizes of open areas, one of the first cone or the second cone being circumferentially coupled in a fixed relation to the catheter body and the other of the first cone or the second cone being circumferentially and moveably coupled to the catheter body and movable relative to the fixed one of the first cone or second cone to accommodate expansion of the expansible vena cava filter member, the expansible vena cava filter member configured to center at least a portion of the catheter body within a blood vessel lumen.
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Abstract
A self-centering central access catheter includes a multi-lumen catheter body, a first port associated with a first lumen, and a second port associated with a second lumen. The first and second ports are disposed proximate a distal end of the multi-lumen catheter. A diametrically expansible member is circumferentially coupled to a multi-lumen catheter body and positioned intermediate the first port and the second port. The diametrically expansible member comprises a first portion that is immovably fixed to the multi-lumen catheter body and a second portion that is movably coupled to the multi-lumen catheter body.
216 Citations
19 Claims
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1. A self-centering vena cava filter catheter, comprising:
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a catheter body with a distal end and a proximal end, the catheter body having a first opening in communication with a first lumen of the catheter body and a second opening in communication with a second lumen of the catheter body; and an expansible vena cava filter member coupled to and circumferentially surrounding the catheter body such that the catheter body is generally centered within the vena cava filter member, the expansible vena cava filter member consisting essentially of a plurality of longitudinal struts forming a first cone co-axial with the catheter member and a second cone co-axial with the catheter member and extending in a direction opposite the first cone, the first cone being configured with a first open area sufficient to permit thrombus to pass into an area bounded by the plurality of longitudinal struts and the second cone being configured with a second open area sufficient to capture thrombus passing into the area bounded by the plurality of longitudinal struts, the first and second open areas having different sizes of open areas, one of the first cone or the second cone being circumferentially coupled in a fixed relation to the catheter body and the other of the first cone or the second cone being circumferentially and moveably coupled to the catheter body and movable relative to the fixed one of the first cone or second cone to accommodate expansion of the expansible vena cava filter member, the expansible vena cava filter member configured to center at least a portion of the catheter body within a blood vessel lumen. - View Dependent Claims (2, 3, 4, 5)
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6. A self-centering catheter, comprising:
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a catheter body having a first lumen and a second lumen; a first opening in communication with a first lumen and a second opening in communication with a second lumen, the first and second opening being closer to a distal end of the catheter body than to a proximal end of the catheter body; and an expansible member coupled to and around the catheter body and positioned generally intermediate the first opening and the second opening, wherein the expansible member is configured to be expanded in a blood vessel lumen to center at least a portion of the catheter body within the blood vessel lumen, the expansible member consists of a first plurality of longitudinal strut members configured to define a first generally conical shaped portion having a first apex and a second plurality of longitudinal strut members configured to define a generally conical shaped portion having a second apex, the first apex comprising a ring-like member that is coupled in a fixed relation to and generally circumferential and coaxial with the catheter body and the second apex being formed of ends of the second plurality of longitudinal strut members that is moveably coupled to and generally circumferential and coaxial with the catheter body such that movement of the second portion relative the first portion expands or contracts the expansible member. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13)
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14. A self-centering catheter, comprising:
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a catheter body having a plurality of lumens, a proximal portion and a distal portion and a diametric transition therebetween, and wherein the diametric transition has a radial depth corresponding to a radial thickness of an expansible member; the expansible member consisting of a plurality of strut members configured into longitudinally opposing generally conical shapes and having first and second ends, at least one of the first and second ends being coupled in a fixed relation to the catheter body the first end having openings of sufficient dimension to permit thrombus to pass into an area bounded by the expansible member and the second end having openings of sufficient dimension to capture thrombus within the area bounded by the expansible member; wherein the first end of the expansible member is immovably fixed to the catheter body and the second end is movably coupled to the catheter body; wherein the expansible member further comprises a ring structure coupled intermediate to the first and second cone; and wherein the expansible member is configured; to be expanded to center at least a portion of the catheter body within a blood vessel lumen. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification