Catheter delivery device
First Claim
1. A catheter delivery device for a self-expanding stent, comprising:
- a distal catheter component having a lumen and comprising;
a stent support tube; and
a compound catheter portion tube having a distal end axially connected to a proximal end of the stent support tube and comprising;
a braided reinforcement, anda helix of wire coaxial with a lumen of the distal catheter component, the helix having a distal end proximal of the stent support tube and a proximal end distal of a proximal end of the compound catheter portion tube;
a radially compressed stent positioned over the stent support tube such that a distal end of the stent is proximal of a distal end of the support tube;
a distal sheath surrounding the radially compressed stent;
a diving sheath having a distal end attached to a proximal end of the distal sheath and radially surrounding the compound catheter portion tube, the distal end of the helix of wire proximal the distal end of the diving sheath;
a proximal catheter shaft tube having a distal end attached to a proximal end of the distal catheter component;
a pull wire extending through a lumen of the proximal catheter shaft tube wherein the pull wire is fixedly attached to a proximal section of the diving sheath;
a proximal sheath having a lumen that contains the proximal catheter shaft tube and an open distal end that receives a proximal end of the distal catheter component; and
a casing tube surrounding the proximal sheath and having a distal end that receives telescopically the diving sheath;
whereinthe stent support tube exhibits a support tube diameter,the compound catheter portion tube exhibits a compound catheter portion tube diameter, andthe support tube diameter is equal to the compound catheter portion tube diameter.
1 Assignment
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Accused Products
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.
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Citations
13 Claims
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1. A catheter delivery device for a self-expanding stent, comprising:
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a distal catheter component having a lumen and comprising; a stent support tube; and a compound catheter portion tube having a distal end axially connected to a proximal end of the stent support tube and comprising; a braided reinforcement, and a helix of wire coaxial with a lumen of the distal catheter component, the helix having a distal end proximal of the stent support tube and a proximal end distal of a proximal end of the compound catheter portion tube; a radially compressed stent positioned over the stent support tube such that a distal end of the stent is proximal of a distal end of the support tube; a distal sheath surrounding the radially compressed stent; a diving sheath having a distal end attached to a proximal end of the distal sheath and radially surrounding the compound catheter portion tube, the distal end of the helix of wire proximal the distal end of the diving sheath; a proximal catheter shaft tube having a distal end attached to a proximal end of the distal catheter component; a pull wire extending through a lumen of the proximal catheter shaft tube wherein the pull wire is fixedly attached to a proximal section of the diving sheath; a proximal sheath having a lumen that contains the proximal catheter shaft tube and an open distal end that receives a proximal end of the distal catheter component; and a casing tube surrounding the proximal sheath and having a distal end that receives telescopically the diving sheath; wherein the stent support tube exhibits a support tube diameter, the compound catheter portion tube exhibits a compound catheter portion tube diameter, and the support tube diameter is equal to the compound catheter portion tube diameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification