Embolus blood clot filter and delivery system
First Claim
Patent Images
1. A blood filter delivery system for a blood filter unit, comprising:
- an introducer having a coupling port connected to an elongated generally tubular member;
a storage member coupled to the coupling port of the introducer and a Y-adaptor; and
a pusher assembly having a distal end disposed in the storage member and a proximal end extending out of the Y-adapter, the pusher assembly including;
a handle disposed along a longitudinal axis of the pusher assembly proximate the proximal end;
a pusher pad disposed along the longitudinal axis of the pusher assembly proximate the distal end;
an elongated member between the handle and the pusher pad, the elongated member having a flexible section with a distal end directly in contact with and continuous with a proximal end of the pusher pad, the flexible section compressed along the longitudinal axis in a predeployed configuration to provide a spring force for filter deployment; and
a spline member disposed on the pusher assembly along the longitudinal axis between the handle and the pusher, the spline member having a first boss portion and a second boss portion spaced apart along the longitudinal axis to provide a gap therebetween, the first boss portion including a plurality of longitudinal grooves; and
a blood filter having a plurality of anchor members disposed about the longitudinal axis, each of the anchor members having;
a portion disposed in each of the plurality of longitudinal grooves, respectively; and
a hook disposed in the gap.
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Accused Products
Abstract
A blood filter delivery system for delivering a filter into a vein includes an introducer and a push rod with a spline member disposed along the push rod. 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 member of the filter during delivery via the introducer.
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Citations
33 Claims
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1. A blood filter delivery system for a blood filter unit, comprising:
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an introducer having a coupling port connected to an elongated generally tubular member; a storage member coupled to the coupling port of the introducer and a Y-adaptor; and a pusher assembly having a distal end disposed in the storage member and a proximal end extending out of the Y-adapter, the pusher assembly including; a handle disposed along a longitudinal axis of the pusher assembly proximate the proximal end; a pusher pad disposed along the longitudinal axis of the pusher assembly proximate the distal end; an elongated member between the handle and the pusher pad, the elongated member having a flexible section with a distal end directly in contact with and continuous with a proximal end of the pusher pad, the flexible section compressed along the longitudinal axis in a predeployed configuration to provide a spring force for filter deployment; and a spline member disposed on the pusher assembly along the longitudinal axis between the handle and the pusher, the spline member having a first boss portion and a second boss portion spaced apart along the longitudinal axis to provide a gap therebetween, the first boss portion including a plurality of longitudinal grooves; and a blood filter having a plurality of anchor members disposed about the longitudinal axis, each of the anchor members having; a portion disposed in each of the plurality of longitudinal grooves, respectively; and a hook disposed in the gap. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A pusher assembly for use in a vena cava filter delivery unit, the pusher assembly including a filter having a plurality of filter anchor members with a plurality of hooks, the assembly comprising:
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an elongated member extending along a longitudinal axis from a proximal end to a distal end, the elongated member having a plurality of cross-sections at various locations along the elongated member, a flexible reduced cross-section disposed at the second end and compressed in a pre-deployed configuration along the longitudinal axis to provide a spring force for filter deployment; a handle disposed proximate the proximal end of the elongated member; a pusher pad disposed proximate the distal end of the elongated member, the pusher pad having a proximal end directly in contact with and continuous with a distal end of the flexible reduced cross-section; and a spline member disposed along the longitudinal axis between the handle and the pusher pad, the member having a first boss portion and a second boss portion spaced apart along the longitudinal axis to provide a gap therebetween, the first boss portion including a plurality of longitudinal grooves, wherein each of the grooves accommodates a respective portion of each of the filter anchor members, and wherein the gap accommodates the plurality of hooks. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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23. A pusher assembly for use in a vena cava filter delivery unit, the pusher assembly comprising:
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an elongated member extending along a longitudinal axis from a first end to a second end; a handle disposed proximate the first end; a pusher disposed proximate the second end; a spline member disposed along the longitudinal axis between the handle and the pusher, the spline member having a plurality of grooves, each groove defining a plurality of widths along a length thereof; and a filter having a plurality of anchor members terminating in a hook, each anchor member having an anchor portion adjacent to the hook located, respectively, in one of the plurality of grooves, the anchor member having a maximum width greater than a minimum width of the groove, the hook having an end located outside of the groove. - View Dependent Claims (24, 25, 26)
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27. A method of packaging a blood filter having a plurality of anchors about a longitudinal axis, each of the anchors having a hook and at least two of the anchors defining a span intersecting the longitudinal axis and between the at least two anchors of about 40 millimeters, the anchors being coupled to a hub that extends along the longitudinal axis, the method comprising:
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positioning a pusher pad connected to a flexible section of an elongate member against the hub; locating a curved portion of each hook in an annular gap disposed between two boss portions of a support assembly, wherein the support assembly includes a plurality of grooves that extends through one of the two boss portions; locating a portion of each anchor in each of the longitudinal grooves respectively, such that the flexible section is compressed along the longitudinal axis to provide a spring force for filter deployment; and enclosing the filter, including the plurality of hooks and the boss portions, in a generally tubular member having an outside diameter of less than about 10 French (about 3.3 millimeters in diameter). - View Dependent Claims (28, 29, 30, 31, 32, 33)
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Specification