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US 5,669,878 AGranted
Guide wire for a catheter with position indicating means
AssigneeIntravascular Research Limited
InventorsRobert Julian Dickinson, Martin Terry Rothman
Life of this patent
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Abstract
A catheter is provided either with an x-ray-opaque marker or with a device for generating a vibratory signal for transmission along a guide wire within the catheter in order to indicate the position of the catheter.
Claims5
A catheter provided with a guide wire over which the catheter can be slid, said guide wire consisting essentially of:
- a single uncoiled wire which is exposed in use;
- and
- a plurality of X-ray opaque markers set at regular intervals such that each of the markers is spaced from adjacent markers by a fixed distance along the length of the single wire,
- said plurality of markers being grouped into two sets of opaque markers,
- the markers in one set being distinguishable from the markers in the other set by having a different thickness from the markers in the other set, and
- the markers in one set being in spaced apart relation from the markers of the set.
3 more elements
A catheter comprising:
- a guide wire over which the catheter can be slid, said guide wire consisting essentially of a single uncoiled wire;
- and
- means for generating a vibratory signal for transmission along the single uncoiled wire to detect the distance that the catheter has been inserted into a patient.
Dependencies are inferred from the claim text.