High barrier elastomer fecal catheter or ostomy pouch
AssigneeConvatec Technologies Inc.
InventorsTinh Nguyen-Demary, Mingliang Lawrence Tsai
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Abstract
A fecal catheter or ostomy pouch made of an odor barrier material including a thermoplastic elastomer, odor barrier modifier and an antiblocking agent.
Claims24
A fecal catheter comprising an odor barrier material comprising:
- i) a thermoplastic elastomer selected from the group consisting of a styrenic block copolymer, a thermoplastic vulcanizate, or a polyolefin elastomer;
- ii) an odor barrier modifier selected from polyisobutene, polybutene, or an organoclay;
- and
- iii) at least 0.1% antiblocking agent selected from the group consisting of essentially inorganic fillers, including silica, talc, clay, and mica;
- and
- wherein the antiblocking agent imparts an interior rough surface having an arithmetic mean surface roughness (Ra) not less than 0.1 μm, wherein the fecal catheter is non-blocking upon folding and packaging.
A fecal catheter comprising an odor barrier material comprising:
- an elastomer selected from the group consisting of silicone, polyurethane, styrenic block copolymer, thermoplastic vulcanizate or polyolefin elastomer;
- a nanocomposite filler material coated on or present within said elastomer so as to provide an odor barrier;
- said elastomer and nanocomposite forming a soft catheter tube having a Shore A hardness of not more than 60;
- and
- wherein the fecal catheter comprises an interior rough surface having an arithmetic mean surface roughness (Ra) not less than 0.1 μm, wherein the fecal catheter is non-blocking upon folding and packaging.
A fecal catheter comprising an odor barrier material, comprising an elastomer substrate and zeolite, said elastomer and zeolite forming a soft catheter tube having a Shore A hardness of not more than 60;
- and wherein the fecal catheter comprises an interior rough surface having an arithmetic mean surface roughness (Ra) not less than 0.1 μm, such that the fecal catheter is non-blocking upon folding and packaging.
A fecal catheter comprising at least 0.1% antiblocking agent such that the antiblocking agent imparts a rough interior surface to prevent catheter blocking upon folding and packaging, and an interior surface with an arithmetic mean surface roughness (Ra) of not less than 0.1 μm, wherein the fecal catheter is non-blocking.
Dependencies are inferred from the claim text.