GUIDE EXTENSION CATHETER WITH A RETRACTABLE WIRE
First Claim
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1. A guide extension catheter, comprising:
- a proximal shaft having a first outer diameter;
a distal sheath attached to the proximal shaft and having a second outer diameter greater than the first outer diameter; and
wherein the distal sheath has a central lumen defined therein and a secondary lumen formed along a wall surface of the distal sheath.
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Abstract
Embodiments of the present disclosure describe a guide extension catheter with a retractable wire. The guide extension catheter may include a proximal shaft having a first outer diameter. The guide extension catheter may further include a distal sheath attached to the proximal shaft and having a second outer diameter greater than the first outer diameter. Further, the distal sheath may have a central lumen defined therein and a secondary lumen formed along a wall surface of the distal sheath.
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Citations
20 Claims
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1. A guide extension catheter, comprising:
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a proximal shaft having a first outer diameter; a distal sheath attached to the proximal shaft and having a second outer diameter greater than the first outer diameter; and wherein the distal sheath has a central lumen defined therein and a secondary lumen formed along a wall surface of the distal sheath. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A medical device assembly, comprising:
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a guide catheter having a lumen formed therein; a guide extension catheter extending through the lumen, the guide extension catheter including; a proximal shaft having a first outer diameter, a distal sheath attached to the proximal shaft and having a second outer diameter greater than the first outer diameter, and wherein the distal sheath has a central lumen defined therein and a secondary lumen formed along a wall surface of the distal sheath; and a guidewire extending through the central lumen of the distal sheath. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for accessing a coronary artery, the method comprising:
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providing a guide catheter; advancing the guide catheter through a first outer diameter blood vessel to a location adjacent to an ostium of a coronary artery; providing a guide extension catheter, the guide extension catheter including; a proximal shaft having a first outer diameter, a distal sheath attached to the proximal shaft and having a second outer diameter greater than the first outer diameter, and wherein the distal sheath has a central lumen defined therein and a secondary lumen formed along a wall surface of the distal sheath; advancing the guide extension catheter through the guide catheter to a position where at least a portion of the distal sheath extends distally beyond a distal end of the guide catheter and into the coronary artery; and advancing a treatment catheter through the guide catheter. - View Dependent Claims (20)
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Specification