Devices and methods for endovascular access and therapy
First Claim
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1. An expandable sheath comprising:
- a sheath hub having a through lumen, a distal end, and a proximal end, wherein the through lumen is configured for passing a needle or a guidewire; and
an expandable sheath shaft connected to the distal end of the sheath hub, the expandable sheath shaft comprising a sheath body and sheath tip at the distal end of the sheath body,wherein the expandable sheath shaft has a lumen and is configured for passing the needle or guidewire,wherein the expandable sheath shaft comprises one or more beams connected by one or more strips each running longitudinally along a substantial portion of the shaft, wherein the one or more beams and the one or more strips extend parallel to a longitudinal axis at the sheath body and curve radially with respect to the longitudinal axis at the sheath tip,wherein the one or more beams have a thickness greater than the one or more strips,wherein the one or more beams and one or more strips comprise a same compliant material, andwherein the expandable sheath is configured to expand radially.
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Abstract
The present invention provides for devices and methods for providing endovascular therapy, including facilitating establishment of vascular access, placement of endovascular sheaths, catheter tip localization, and administration of vascular occlusion. The inventions includes a vessel cannulation device, an expandable sheath, an occlusion catheter, and a localizer each of which may be provided separately or used as part of a system.
76 Citations
22 Claims
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1. An expandable sheath comprising:
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a sheath hub having a through lumen, a distal end, and a proximal end, wherein the through lumen is configured for passing a needle or a guidewire; and an expandable sheath shaft connected to the distal end of the sheath hub, the expandable sheath shaft comprising a sheath body and sheath tip at the distal end of the sheath body, wherein the expandable sheath shaft has a lumen and is configured for passing the needle or guidewire, wherein the expandable sheath shaft comprises one or more beams connected by one or more strips each running longitudinally along a substantial portion of the shaft, wherein the one or more beams and the one or more strips extend parallel to a longitudinal axis at the sheath body and curve radially with respect to the longitudinal axis at the sheath tip, wherein the one or more beams have a thickness greater than the one or more strips, wherein the one or more beams and one or more strips comprise a same compliant material, and wherein the expandable sheath is configured to expand radially. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An expandable sheath configured to be inserted into a patient'"'"'s body over a needle, the expandable sheath comprising:
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a hub, a shaft, a tapered tip at a distal end of the shaft, and at least one longitudinal element, wherein; the hub has an inner diameter equal to 2-5 times an outer diameter of the needle, the expandable sheath has a crimped and an expanded state, in the crimped state, the tapered tip and shaft have an inner diameter equal to the outer diameter of the needle, the expandable sheath is configured to transition from its crimped state to its expanded state upon insertion of a large bore device into it, and in the expanded state, the tapered tip and shaft have an inner diameter substantially equal to or larger than the inner diameter of the hub, wherein the inner diameter of the tapered tip and shaft in the expanded state are equal to 2-5 times the inner diameter of the tapered tip and shaft in the crimped state, wherein the expandable sheath and the at least one longitudinal element are made from the same material. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification