MEDICAL CATHETER APPARATUS
1 Assignment
0 Petitions
Accused Products
Abstract
A catheter apparatus comprising a catheter and a sheath are provided. The catheter has a distal end to which an insertion guiding member is attached, provided at its distal end with a balloon to expand a vascular stent, and provided with an expansion medium supplying channel for supplying an expansion medium to inflate the balloon and with a guide wire insertion channel for inserting a guide wire. The sheath is operated to move relative to the catheter between the section where it is covering the balloon attaching the vascular stent and the section where it is supposed to expose the vascular stent attached to the balloon. A first movement restrictor and a second movement restrictor are provided, thereby restricting movable position such that excessive movement of the sheath is restricted, injuring of a blood vessel is prevented and the stent is implanted to a desired site in a blood vessel.
13 Citations
20 Claims
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1-10. -10. (canceled)
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11. A medical catheter apparatus comprising:
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a catheter having a distal end to which an insertion guiding member is attached, provided at the distal end with a balloon to be inflated by supplying an expansion medium to expand a vascular stent mounted on an outer periphery of the balloon, and provided with an expansion medium supplying channel extending from the proximal end to the distal end of the catheter for supplying the expansion medium to inflate the balloon and with a guide wire insertion channel extending at least from the distal end to the middle portion of the catheter for inserting a guide wire, and a sheath into which the catheter is inserted, covering the outer periphery of the catheter from its distal side where the balloon is positioned through its proximal side, and being operated to move relative to the catheter between the section where it is covering the balloon attaching the vascular stent and the section where it is supposed to expose the vascular stent attached to the balloon, and a first movement restrictor provided between the sheath and the catheter, protruding from the distal end of the catheter for restricting movement overpassing the insertion guiding member thereby preventing the sheath from protruding out from the distal end of the catheter. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification