Catheter delivery device
AssigneeC. R. Bard, Inc.
InventorJuergen Dorn
Life of this patent
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Abstract
A catheter delivery device for a self-expanding stent is described. The delivery device includes a distal catheter component and a distal sheath that releases the stent by moving proximally relative to the distal catheter component and the stent. A proximal catheter shaft including a tube and a pull wire within a lumen of the tube may be provided, the pull wire being attached to the distal sheath such that pulling the pull wire proximally relative to the tube pulls the distal sheath proximally to release the stent progressively. A casing tube may be provided to surround the catheter shaft, the casing tube having a distal end that receives telescopically a proximal end of the distal sheath.
Claims15
A catheter delivery device for a self-expanding stent, comprising:
- a distal catheter component carrying the stent;
- a distal sheath disposed over the distal catheter component and the stent in an insertion position, wherein relative movement of the distal sheath with respect to the distal catheter component and the stent releases the stent;
- a compound catheter portion coupled to the distal catheter component, the compound catheter portion having a stiffness greater than a stiffness of the distal catheter component;
- a proximal catheter component having a proximal end attached to a hub and a distal end coupled to the compound catheter portion, wherein:
- the proximal catheter component, the compound catheter portion, and the distal catheter component together define a contiguous guidewire lumen from a proximal end of the device to a distal end of the device, and
- the proximal catheter component surrounds a tube and a pull wire within a lumen of the tube, the pull wire operably connected to the distal sheath via a diving sheath;
- and
- a casing tube surrounding the proximal catheter component, the casing tube telescopically receiving the diving sheath upon proximal movement of the pull wire.
Dependencies are inferred from the claim text.