Process to form dimensionally variable tubular members for use in catheter procedures
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United States of America Patent
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Mar 25, 1997
Grant Date -
N/A
app pub date -
Mar 2, 1995
filing date -
Mar 2, 1995
priority date (Note) -
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status (Latency Note)
Importance
Abstract
Process for forming a dimensionally variable tubular member for use in catheterization procedures. The process includes a mechanism for extruding a tubular member. A variable speed puller pulls the tubular member through or from the extrusion means at a selectively variable speed. A variable air or gas pressure supply supplies pressurized air or gas to the extrusion mechanism at a selectively variable rate. The dimensionally varying tubular member may be cut to desired lengths for use as catheter shafts or catheter soft tips. The process may include forming a tubular member having a dimensionally varying first layer and a dimensionally varying second layer, wherein a portion of the first layer at a distal end of the tubular member is removed.
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