Torsion Constrained Stent Delivery System
First Claim
1. A stent delivery system comprising:
- an inner elongate shaft including a proximal portion, a distal portion, a lumen extending at least partially therethrough;
an outer elongate shaft including a proximal portion, a distal portion, the outer elongate shaft coaxially positioned over at least a portion of the inner elongate shaft;
the inner elongate shaft being rotatably positionable relative to the outer elongate shaft about a longitudinal axis from a first rotational position to a second rotational position;
a stent having a proximal portion and a distal portion, the stent positioned on at least a portion of the inner elongate shaft, the stent having a constrained configuration and an expanded configuration;
a proximal constraining member connected to a proximal portion of the stent;
a distal constraining member connected to a distal portion of the stent;
the proximal constraining member and the distal constraining member configured to cooperatively apply a torsional force to at least a portion of the stent in the constrained configuration with the inner and outer elongate shafts in the first rotational position.
2 Assignments
0 Petitions
Accused Products
Abstract
A stent delivery system and a method are provided. The stent delivery system includes an inner and outer elongate shaft. The outer shaft is coaxially positioned over at least a portion of the inner shaft and the inner shaft is rotatably positionable relative to the outer shaft about a longitudinal axis from a first to a second rotational position. The stent delivery system also includes a stent positioned on at least a portion of the inner shaft and having a constrained and an expanded configuration. Proximal and distal constraining members releasably connected to the stent. The proximal and the distal constraining members cooperatively apply a torsional force to at least a portion of the stent in the constrained configuration and the inner and outer shafts in the first rotational position.
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Citations
20 Claims
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1. A stent delivery system comprising:
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an inner elongate shaft including a proximal portion, a distal portion, a lumen extending at least partially therethrough; an outer elongate shaft including a proximal portion, a distal portion, the outer elongate shaft coaxially positioned over at least a portion of the inner elongate shaft;
the inner elongate shaft being rotatably positionable relative to the outer elongate shaft about a longitudinal axis from a first rotational position to a second rotational position;a stent having a proximal portion and a distal portion, the stent positioned on at least a portion of the inner elongate shaft, the stent having a constrained configuration and an expanded configuration; a proximal constraining member connected to a proximal portion of the stent; a distal constraining member connected to a distal portion of the stent;
the proximal constraining member and the distal constraining member configured to cooperatively apply a torsional force to at least a portion of the stent in the constrained configuration with the inner and outer elongate shafts in the first rotational position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A stent delivery system comprising:
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an inner elongate shaft including a proximal portion, a distal portion, a lumen extending at least partially therethrough; an outer elongate shaft including a proximal portion, a distal portion, the outer elongate shaft coaxially positioned over at least a portion of the inner elongate shaft;
the inner elongate shaft being rotatably positionable relative to the outer elongate shaft about a longitudinal axis from a first rotational position to a second rotational position;a stent having a proximal portion and a distal portion, the stent positioned on at least a portion of the inner elongate shaft, the stent having a constrained configuration and an expanded configuration, the distal portion of the stent operably connected to the inner elongate shaft and the proximal portion of the stent operably connected to the outer elongate shaft; the inner elongate member rotatably positionable relative to the outer elongate member to cooperatively apply a torsional force to at least a portion of the stent in the constrained configuration. - View Dependent Claims (13)
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14. A method of implanting a stent in a patient'"'"'s lumen, the method comprising:
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inserting a distal portion of a stent delivery system into the lumen of a patient, the stent delivery system comprising; an inner shaft including a proximal portion, a distal portion, a lumen extending at least partially therethrough, an outer shaft including a proximal portion, a distal portion, the outer elongate shaft coaxially positioned over at least a portion of the inner elongate shaft; a stent a stent having a proximal portion and a distal portion, the stent positioned on at least a portion of the inner elongate shaft; a proximal constraining member releasably connected to the stent proximal portion; a distal constraining member releasably connected to the stent distal portion; holding the stent in a constrained configuration with torsional force applied to the stent by the proximal and distal constraining members the inner and outer elongate shafts in the first rotational position. positioning the stent at the implant site; expanding the stent to an expanded configuration by rotating the inner shaft relative to the outer shaft from the first rotational position to a second rotational position and releasing torsional force on the stent. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification