Torquable, low mass medical guidewire
First Claim
1. A guidewire for use in endoscopic retrograde cholangio pancreatography (ERCP), comprising:
- a proximal section comprising a fiber rod, a tube, and means for attaching the tube and fiber rod together in a collinear relationship,a flexible distal section, said distal section being attached to the distal end of the tube and comprising(i) a superelastic core having a proximal end of a first diameter and a distal end of a diameter no greater than that of said superelastic core wire proximal end, and(ii) a radiopaque marker disposed about the distal end of said superelastic core; and
an insulative sleeve enveloping at least a portion of said distal section.
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0 Petitions
Accused Products
Abstract
A guidewire for use in endoscopic retrograde cholangio pancreatography (ERCP) includes a proximal section defined by a fiber rod, a tube, and a connection mechanism for attaching the tube and fiber rod together in a collinear relationship. The guidewire also includes a flexible distal section which is attached to the distal end of the tube. The distal section is comprised of a superelastic core having a radiopaque marker disposed about its distal end, and at least a portion of the distal section is enveloped by an insulative sleeve. The superelastic core may be tapered, and the fiber rod may comprise a multiplicity of fibers encapsulated in a resin.
103 Citations
13 Claims
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1. A guidewire for use in endoscopic retrograde cholangio pancreatography (ERCP), comprising:
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a proximal section comprising a fiber rod, a tube, and means for attaching the tube and fiber rod together in a collinear relationship, a flexible distal section, said distal section being attached to the distal end of the tube and comprising (i) a superelastic core having a proximal end of a first diameter and a distal end of a diameter no greater than that of said superelastic core wire proximal end, and (ii) a radiopaque marker disposed about the distal end of said superelastic core; and an insulative sleeve enveloping at least a portion of said distal section. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A guidewire for use in endoscopic retrograde cholangio pancreatography (ERCP), comprising
a proximal section comprising a fiberglass rod, a hypotube, and means for attaching the hypotube and fiberglass rod together in a collinear relationship, a flexible distal section, said distal section being attached to the distal end of the hypotube and comprising (i) a Nitinol core having its distal end tapered, and (ii) a radiopaque coil secured to the tapered distal end of said Nitinol core; - and
an insulative sleeve enveloping at least a portion of said distal section. - View Dependent Claims (9, 10, 11, 12, 13)
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Specification