Guidewire having a coated tip
First Claim
Patent Images
1. A guidewire assembly comprising:
- an elongate guidewire core having a proximal shaft portion of a given outer diameter, a flexible distal tip portion of a diameter less than said given diameter and a transition shoulder of decreasing diameter therebetween, said shaft portion being capable of transmitting torque to said distal tip portion; and
a plastic coating extending over said entire tip portion and said shoulder with said shaft portion being free of said plastic coating, said plastic coating having a uniform outer diameter which is no greater than substantially the given diameter of said shaft portion.
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Abstract
A guidewire includes a shaft portion and a tip portion with the tip portion having a plastic tubular coating thereover. The shaft portion of the guidewire has a given diameter and the tip portion has a diameter which decreases towards a distal end thereof. A tubular plastic coating is placed on at least the tip portion of the guidewire. The outer diameter of the coating on the tip portion exceeds the diameter of the shaft portion. The diameter of the plastic coating is reduced so as to be no greater than the diameter of the shaft portion. A hydrophilic coating may be applied over the shaft and the tip portion of the guidewire.
113 Citations
12 Claims
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1. A guidewire assembly comprising:
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an elongate guidewire core having a proximal shaft portion of a given outer diameter, a flexible distal tip portion of a diameter less than said given diameter and a transition shoulder of decreasing diameter therebetween, said shaft portion being capable of transmitting torque to said distal tip portion; and a plastic coating extending over said entire tip portion and said shoulder with said shaft portion being free of said plastic coating, said plastic coating having a uniform outer diameter which is no greater than substantially the given diameter of said shaft portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification