Radial coil expandable medical wire
First Claim
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1. A medical device comprising:
- an elongate sleeve defining a lumen extending longitudinally within at least a portion of the elongate sleeve, the sleeve comprising a first portion and a second portion more rigid than the first portion, wherein the sleeve is a unitary one-piece structure; and
an elongate core slidably disposable within the lumen, the core including a section that changes shape when disposed in the first portion to increase an outer diameter of the sleeve, the section being retained in a substantially linear configuration when disposed in the second portion,wherein, when the section changes shape, the first portion of the sleeve is configured to transition from an unexpanded state to an expanded state, wherein in the unexpanded state, the first portion has a first outer diameter that is equal to an outer diameter of the second portion of the sleeve, and wherein in the expanded state, the first portion has a second outer diameter that is greater than the first outer diameter.
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Abstract
An expandable medical wire can be used to entrain biological or foreign material during a medical procedure, such as lithotripsy. The wire also can be used to remove the material safely from the body. Generally, the wire includes a sleeve and a core, where the sleeve, the core, or both include a portion or portions that can be deployed to form an expanded coiled configuration. The expanded coiled configuration can be collapsed to facilitate positioning the wire within an anatomical lumen. In addition, the wire can be used as a conventional guide wire or as a self-anchoring guide wire.
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Citations
24 Claims
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1. A medical device comprising:
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an elongate sleeve defining a lumen extending longitudinally within at least a portion of the elongate sleeve, the sleeve comprising a first portion and a second portion more rigid than the first portion, wherein the sleeve is a unitary one-piece structure; and an elongate core slidably disposable within the lumen, the core including a section that changes shape when disposed in the first portion to increase an outer diameter of the sleeve, the section being retained in a substantially linear configuration when disposed in the second portion, wherein, when the section changes shape, the first portion of the sleeve is configured to transition from an unexpanded state to an expanded state, wherein in the unexpanded state, the first portion has a first outer diameter that is equal to an outer diameter of the second portion of the sleeve, and wherein in the expanded state, the first portion has a second outer diameter that is greater than the first outer diameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A medical device comprising:
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an elongate sleeve defining a lumen extending longitudinally within at least a portion of the elongate sleeve, the sleeve including a sleeve section that changes shape; and an elongate core slidably disposable within the lumen, the core including a core section that changes shape, each of the sleeve and core sections retaining a substantially linear configuration when restrained and forming a substantially coiled, configuration when aligned. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification