Medical guidewire
First Claim
1. A guidewire for use with a medical device having a hollow structure, comprising:
- an inner core selected from the group consisting of (a) a strand formed of a plurality of wire elements without a core member, and (b) a single wire;
the inner core having an outer circumferentially uneven surface having; and
a high-polymer coating having an outer circumferential surface and covering the outer circumferential surface of the inner core, the outer circumferential surface of the high-polymer coating having an uneven surface formed by the uneven surface of the outer circumferential surface of the inner core the uneven surface dispersing contact points for the guidewire to provide excellent slideability with respect to the medical device.
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Accused Products
Abstract
The present invention provides a guidewire having a reduced diameter, which ensures rigidity and excellent guidance ability in spite of its reduced diameter, and which achieves an excellent sliding ability and insertion/pulling-out ability with respect to a catheter or the like. The guidewire has an inner core formed of a single wire having an uneven surface on its outer circumferential surface, a high-polymer coating which densely covers the outer circumferential surface of the inner core, and an uneven surface formed on the outer circumferential surface of the high-polymer coating by an influence from the uneven surface on the outer circumferential surface of the inner core.
63 Citations
14 Claims
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1. A guidewire for use with a medical device having a hollow structure, comprising:
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an inner core selected from the group consisting of (a) a strand formed of a plurality of wire elements without a core member, and (b) a single wire;
the inner core having an outer circumferentially uneven surface having; and
a high-polymer coating having an outer circumferential surface and covering the outer circumferential surface of the inner core, the outer circumferential surface of the high-polymer coating having an uneven surface formed by the uneven surface of the outer circumferential surface of the inner core the uneven surface dispersing contact points for the guidewire to provide excellent slideability with respect to the medical device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A guidewire for use with a medical device having a hollow structure, comprising:
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an inner core selected from the group consisting of (a) a strand formed of a plurality of wire elements without a core member, and (b) a single wire;
the inner core having an outer circumferentially uneven surface; and
a high-polymer coating having an outer circumferential surface and covering the outer circumferential surface of the inner core, the outer circumferential surface of the high-polymer coating having an uneven surface formed by the uneven surface of the outer circumferential surface of the inner core; and
wherein at least a part of the inner core has a superelastic characteristic. - View Dependent Claims (12, 13, 14)
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Specification