Dialysis Catheters with Fluoropolymer Additives

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United States of America Patent

SERIAL NO

14220572

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Abstract

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A venous access catheter shaft and method of using and manufacturing such a catheter is provided. In one aspect of the invention, a catheter is provided comprising a base polymer having a Shore A durometer of 85A or lower, with 2.0% percent by weight of surface modifier, and a radiopaque filler comprising between 20-40 percentage by weight. In another aspect of the invention, a method reducing thrombus accumulation on a venous access catheter is provided wherein the catheter surface's resistance to thrombus formation is enhanced during indwell time by lowering the durometer rating of the base polymer of the catheter without increasing the amount of surface modifier additive. In another aspect of the invention, a method of manufacturing a catheter shaft is provided, wherein the shaft is formed comprising a base polymer having a Shore A durometer of 85A or lower, with 2.0% percent by weight of surface modifier, and a radiopaque filler comprising 30% by weight barium sulfate, and optionally a colorant of 0.2% weight.

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Patent Owner(s)

Patent OwnerAddress
INTERFACE BIOLOGICS INCTORONTO ONTARIO M5G 1L7

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Appling, William Granville, US 4 522
Bell, Benjamin Shrewsbury, US 107 662
Beyer, Theodore Queensbury, US 34 259
Ho, Jeannette Toronto, CA 22 146
Lancette, Carol Fort Ann, US 5 20
Lareau, Raymond Westford, US 48 911
Santerre, J Paul Whitby, CA 41 214

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