Delivery apparatus for a self-expanding stent
First Claim
1. A delivery apparatus for a self-expanding stent, said apparatus comprising:
- a. an outer sheath comprising an elongated tubular member having distal and proximal ends; and
b. an inner shaft, defining a longitudinal axis, located coaxially within said outer sheath, said shaft having a distal portion and a distal end and a proximal portion and a proximal end, said inner shaft further including a body portion between said distal portion and said proximal portion, said body portion being formed from a flexible coiled member capable of stretching and compressing along said longitudinal axis said distal portion and said proximal portion being formed from non-coiled members.
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Accused Products
Abstract
A delivery apparatus for self-expanding stents may be utilized to safely deliver stents to a target site. The apparatus has an outer sheath forming an elongated tubular member having distal and proximal ends and an inside and outside diameter. The apparatus also includes an inner shaft located coaxially within the outer sheath. The inner shaft has a distal end, a proximal end and a longitudinal axis extending therebetween. At least a portion of the inner shaft is made from a flexible coiled member. The shaft preferably includes a stop attached thereto, the stop being proximal to the distal end of the sheath. Lastly, the apparatus includes a self-expanding stent located within the outer sheath, wherein the stent makes frictional contact with the outer sheath and the shaft is disposed coaxially within a lumen of the stent. During deployment of the stent, the stent makes contact with the stop.
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Citations
25 Claims
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1. A delivery apparatus for a self-expanding stent, said apparatus comprising:
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a. an outer sheath comprising an elongated tubular member having distal and proximal ends; and
b. an inner shaft, defining a longitudinal axis, located coaxially within said outer sheath, said shaft having a distal portion and a distal end and a proximal portion and a proximal end, said inner shaft further including a body portion between said distal portion and said proximal portion, said body portion being formed from a flexible coiled member capable of stretching and compressing along said longitudinal axis said distal portion and said proximal portion being formed from non-coiled members. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A delivery apparatus for expanding stent, said apparatus comprising:
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a. an outer sheath comprising an elongated tubular member having distal and proximal ends and an inside and outside diameter;
b. an inner shaft, defining a longitudinal axis, located coaxially within said outer sheath, said shaft having a distal portion and a distal end and a proximal portion and a proximal end, said inner shaft further including a body portion between said distal portion and said proximal portion, said body portion being formed from a flexible coiled member capable of stretching and compressing along said longitudinal axis, said distal portion and said proximal portion being formed from non-coiled members, said shaft further including a stop attached thereto, said stop being proximal to said distal end of said sheath; and
c. a self-expanding stent located within said outer sheath, said stent making frictional contact with said outer sheath, said shaft disposed coaxially within a lumen of said stent, whereby said stent makes contact with said stop during deployment of said stent. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A delivery apparatus for a self-expanding stent, said apparatus comprising:
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a. an outer sheath comprising an elongated tubular member having distal and proximal ends and an inside and outside diameter;
b. an inner shaft, defining a longitudinal axis, located coaxially within said outer sheath, said shaft having a distal portion and a distal end and a proximal portion and a proximal end, said inner shaft further including a body portion between said distal portion and said proximal portion, said body portion being formed from a flexible coiled member capable of stretching and compressing along said longitudinal axis, said distal portion and said proximal portion being formed from non-coiled members, said coiled member having a thin layer covering on an exterior thereof, said shaft further including a stop attached thereto, said stop being proximal to said distal end of said sheath; and
c. a self-expanding stent located within said outer sheath, said stent making frictional contact with said outer sheath, said shaft disposed coaxially within a lumen of said stent, whereby said stent makes contact with said stop during deployment of said stent. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
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Specification