Flexible catheter guidewire
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Sep 28, 1999
Grant Date -
N/A
app pub date -
Sep 25, 1997
filing date -
Sep 25, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A flexible catheter guidewire that comprises an elongate flexible core wire, a cylindrical, thin-walled hollow tube, and a coil spring. The core wire consists of a main section, a tapered section, and a flattened tip. The main section of the core wire has a predetermined uniform diameter. The tapered section of the core wire has a progressively reduced outer diameter. The flattened tip has a substantially rectangular cross-section. The flattened tip has a first end that is attached to the tapered section of the core wire and a second end. The flattened tip decreases in thickness from the first end of the flattened tip to the second end of the flattened tip. The hollow tube is disposed around the tapered section of core wire. The hollow tube has a substantially uniform inner diameter. A gap is formed between the inner surface of the hollow tube and the outer surface of the tapered section. A coil spring constructed of a radiopaque material is attached to the core wire and is disposed around the flattened tip.
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