IVC filter retrieval systems with multiple capture modes
First Claim
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1. An apparatus for delivery or retrieval of a vascular medical device, the apparatus comprising:
- an elongate shaft having an axis and a flexible distal extension, the flexible distal extension comprising a braid folded back at a first fold to form two layers;
upon deployment, the two layers of the flexible distal extension are folded-hack inwardly at a second fold to form a funnel having a distal opening and a proximal opening, the proximal opening being formed by the first fold, the proximal opening configured to receive therethrough a portion of the medical device for securing the medical device;
a tether disposed between the two layers of the braid and around a portion of the proximal opening; and
an elongate sleeve having a lumen, wherein the elongate shaft and the flexible distal extension are within the lumen of the elongate sleeve.
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Abstract
Funnel-trap type delivery and/or retrieval devices for temporary Inferior Vena Cava (IVC) filters or other medical implants or foreign bodies are described. These may employ a locking sheath or a proximal-aperture capture feature or features for IVC filter (or other device) retrieval.
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Citations
22 Claims
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1. An apparatus for delivery or retrieval of a vascular medical device, the apparatus comprising:
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an elongate shaft having an axis and a flexible distal extension, the flexible distal extension comprising a braid folded back at a first fold to form two layers; upon deployment, the two layers of the flexible distal extension are folded-hack inwardly at a second fold to form a funnel having a distal opening and a proximal opening, the proximal opening being formed by the first fold, the proximal opening configured to receive therethrough a portion of the medical device for securing the medical device; a tether disposed between the two layers of the braid and around a portion of the proximal opening; and an elongate sleeve having a lumen, wherein the elongate shaft and the flexible distal extension are within the lumen of the elongate sleeve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An apparatus for delivery or retrieval of a vascular medical device, the apparatus comprising:
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an elongate sleeve having a lumen; an elongate shaft slidably positioned within the lumen of the elongate sleeve; a flexible extension attached to the elongate shaft, the flexible extension comprising a braid folded back at a first fold to form two layers of the braid, and upon deployment, the two layers of the flexible extension form a braided funnel having an inwardly-folded-hack portion with a distal opening at a second fold and a proximal opening at the first fold, the proximal opening being displaced from an end of the elongate sleeve and sized to receive a portion of the medical device therethrough for securing the medical device; and a tether disposed between the two layers of the braid and around a portion of the proximal opening. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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Specification