Automatic wireless medical device release mechanism
AssigneeCook Medical Technologies LLC
InventorsBlayne A. Roeder, Zach Wagner
Life of this patent
Estimating the term…
Abstract
An automatic wireless medical device release system may reduce the overall diameter of the medical device delivery system. The medical device delivery system may include a medical device with a looped portion at a distal end of the medical device. A capture wire may be located on a delivery tool that is distal to the medical device. The looped portion of the medical device may be attached to a bend in the capture wire. The bend in the capture wire may be maintained by a sheath covering the delivery tool. Removal of the sheath may automatically remove the bend in the capture wire, which may release the looped portion of the medical device from the capture wire.
Claims20
A medical device delivery system comprising:
- an expandable medical device having a looped portion extending from a section of the medical device, wherein the looped portion is resiliently flexible;
- a shaft comprising a proximal end and a distal end and an interposed internal lumen, the shaft having a capture wire at the proximal end of the shaft, wherein the capture wire includes a bend to receive the looped portion of the expandable medical device;
- and
- a sheath coaxially disposed over the shaft, wherein the sheath is movable from a first axial position where the sheath covers the capture wire to a second axial position where the capture wire is not covered by the sheath, wherein the expandable medical device is coupled to the shaft when the sheath is in the first axial position.
A method of releasing an expandable medical device, comprising:
- delivering an implantable expandable medical device to a desired location, wherein a looped portion of the medical device surrounds a capture wire located at a proximal end of a shaft, wherein a sheath is coaxially disposed over the capture wire;
- moving the sheath away from the capture wire in a direction parallel to a length of the shaft;
- uncovering the capture wire;
- removing the bend from the capture wire;
- and
- releasing the looped portion of the implantable expandable medical device from the capture wire.
A medical device delivery system for use with an expandable medical device having a looped portion extending from a section of the expandable medical device, the system comprising:
- a shaft comprising a proximal end and a distal end and an interposed internal lumen, the shaft having a capture wire at the proximal end of the shaft, wherein the capture wire includes a bend to receive the looped portion of the medical device;
- and
- a sheath coaxially disposed over the shaft, wherein the sheath is movable from a first axial position where the sheath covers the capture wire to a second axial position where the capture wire is not covered by the sheath, wherein the expandable medical device is coupled to the shaft when the sheath is in the first axial position.
Dependencies are inferred from the claim text.