Embolus blood clot filter utilizable with a single delivery system or a single retrieval system in one of a femoral or jugular access
First Claim
1. A system comprising:
- a delivery catheter sheath comprising a generally tubular member having a first end, intermediate end and a second end, the tubular member extending along a longitudinal axis, the first end having an inner surface exposed to the longitudinal axis, the inner surface having a plurality of notches formed on the inner surface, the intermediate end including a boss portion disposed in the tubular member having a plurality of grooves formed in the boss portion; and
a blood filter comprising;
a first filter structure comprising at least two elongated members,a second filter structure comprising at least two elongated members,a first link connected between elongated members of the first filter structure at a longitudinal middle section of the elongated members, portions of the first link extending inwardly from the elongated members to a midpoint,anda second link connected between elongated members of the second filter structure at a longitudinal middle section of the elongated members, portions of the second link extending inwardly from the elongated members to a midpoint,whereineach filter structure diverges from the longitudinal axis in opposite directions in a first configuration of the filter structures, andeach filter structure is collapsible into a generally cylindrical shape in a second configuration.
1 Assignment
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Accused Products
Abstract
A blood filter delivery system for delivering a filter into a vein from either a femoral or jugular access. The preferred system includes an introducer and a push-rod with a spline member disposed along the push-rod and a pusher member disposed on a distal end. The spline member has a main body, first and second boss portions spaced apart along the longitudinal axis to provide a gap for retaining anchor members of the filter during delivery via the introducer. In an alternative embodiment, a preferred filter includes first and second filter structures diverging in opposite directions. A link is connected to portions of each of the first and second filter structures so that each filter structure can be independently collapsed into a generally cylindrical shape.
634 Citations
28 Claims
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1. A system comprising:
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a delivery catheter sheath comprising a generally tubular member having a first end, intermediate end and a second end, the tubular member extending along a longitudinal axis, the first end having an inner surface exposed to the longitudinal axis, the inner surface having a plurality of notches formed on the inner surface, the intermediate end including a boss portion disposed in the tubular member having a plurality of grooves formed in the boss portion; and a blood filter comprising; a first filter structure comprising at least two elongated members, a second filter structure comprising at least two elongated members, a first link connected between elongated members of the first filter structure at a longitudinal middle section of the elongated members, portions of the first link extending inwardly from the elongated members to a midpoint, and a second link connected between elongated members of the second filter structure at a longitudinal middle section of the elongated members, portions of the second link extending inwardly from the elongated members to a midpoint, wherein each filter structure diverges from the longitudinal axis in opposite directions in a first configuration of the filter structures, and each filter structure is collapsible into a generally cylindrical shape in a second configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A blood filter system comprising:
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an introducer having a coupling port connected to an elongated generally tubular member; a pusher assembly having a first end disposed in a storage member and a second end extending out of the Y-adapter, the pusher assembly including; a handle disposed along a longitudinal axis of the pusher assembly proximate the second end; a pusher disposed along the longitudinal axis proximate the first end of the elongated assembly; and a generally tubular member having a first end, intermediate end and a second end, the tubular member extending along a longitudinal axis, the first end having an inner surface exposed to the longitudinal axis, the inner surface having a plurality of notches formed on the inner surface, the intermediate end including a boss portion coupled to the pusher and disposed in the tubular member having a plurality of grooves formed in the boss portion, the first end coupled to the Y-adapter; and a blood filter comprising; a first filter structure comprising at least two elongated members, a second filter structure comprising at least two elongated members, a first link connected between elongated members of the first filter structure at a longitudinal middle section of the elongated members, portions of the first link extending inwardly from the elongated members to a midpoint, and a second link connected between elongated members of the second filter structure, at a longitudinal middle section of the elongated members portions of the second link extending inwardly from the elongated members to a midpoint, wherein each filter structure diverges from the longitudinal axis in opposite directions in a first configuration of the filter structures, and each filter structure is collapsible into a generally cylindrical shape in a second configuration. - View Dependent Claims (11, 12)
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13. A method of delivering a blood filter from either an incision in the femoral or jugular vessels, the method comprising:
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providing a filter comprising; a first filter structure comprising at least two elongated members, a second filter structure comprising at least two elongated members, a first link connected between elongated members of the first filter structure at a longitudinal middle section of the elongated members, portions of the first link extending inwardly from the elongated members to a midpoint, and a second link connected between elongated members of the second filter structure at a longitudinal middle section of the elongated members, portions of the second link extending inwardly from the elongated members to a midpoint, wherein each filter structure diverges from the longitudinal axis in opposite directions in a first configuration of the filter structures, and each filter structure is collapsible into a generally cylindrical shape in a second configuration; storing the filter proximate a distal end of a generally tubular sheath having a first end, intermediate end and a second end, the tubular member extending along a longitudinal axis, the first end having an inner surface exposed to the longitudinal axis, the inner surface having a plurality of notches formed on the inner surface, the intermediate end including a boss portion coupled to the pusher and disposed in the tubular member having a plurality of grooves formed in the boss portion; accessing an implantation site via one of the femoral or jugular vessels; and releasing the filter from the sheath proximate the implantation site to engage the filter structures against a vessel wall of the implantation site. - View Dependent Claims (14, 15)
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16. A blood filter comprising:
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a first filter structure comprising at least two elongated members; a second filter structure comprising at least two elongated members; a first link connected between elongated members of the first filter structure at a longitudinal middle section of the elongated members, portions of the first link extending inwardly from the elongated members to a midpoint; and a second link connected between elongated members of the second filter structure, at a longitudinal middle section of the elongated members portions of the second link extending inwardly from the elongated members to a midpoint, wherein each filter structure diverges from the longitudinal axis in opposite directions in a first configuration of the filter structures; and each filter structure is collapsible into a generally cylindrical shape in a second configuration; wherein each of the at least two elongated members comprises a single wire having a first section defining a portion of the first filter structure, a middle section disposed proximate the longitudinal axis, and a second section defining a portion of the second filter structure; wherein each of the elongated members comprises a tubular member having an open end distal to the longitudinal axis and a hook having a portion disposed in the open end and connected to the link of the respective filter structure so that the hook is partially retracted into the open end when the link is moved axially along the longitudinal axis. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification