Silicone elastomer material for use with enteric feeding device
First Claim
1. A gastrostomy feeding device having improved resistance to acidic and enzymatic degradation comprising an elongated feeding tube having a first end for insertion through a patient'"'"'s abdominal wall and a second end including a feeding inlet, and an anchoring means mounted on the feeding tube to retain said feeding tube within the stomach, wherein said anchoring means has at least one internal retaining member comprised of a modified silicone elastomer selected from the group consisting of trifluoropropylsiloxane modified dimethylpolysiloxane, diphenylsiloxane modified dimethylpolysiloxane, and combinations thereof.
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Accused Products
Abstract
An improved gastrostomy feeding device with improved resistance to acidic and enzymatic degradation is disclosed. The device comprises an elongated feeding tube insertable through a patient'"'"'s abdominal wall and an anchoring device mounted on the feeding tube, preferably near the first end, to retain said feeding tube within the stomach. The anchoring device is comprised of at least one internal retaining member fabricated from a trifluoropropyl or phenyl modified dimethylpolysiloxane elastomer having improved resistance to acids and enzymes.
51 Citations
24 Claims
- 1. A gastrostomy feeding device having improved resistance to acidic and enzymatic degradation comprising an elongated feeding tube having a first end for insertion through a patient'"'"'s abdominal wall and a second end including a feeding inlet, and an anchoring means mounted on the feeding tube to retain said feeding tube within the stomach, wherein said anchoring means has at least one internal retaining member comprised of a modified silicone elastomer selected from the group consisting of trifluoropropylsiloxane modified dimethylpolysiloxane, diphenylsiloxane modified dimethylpolysiloxane, and combinations thereof.
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7. The gastrostomy feeding device according to clam 6, wherein the diphenylsiloxane content of said elastomer is from about 10 to 25 mole percent.
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10. A gastrostomy feeding device having improved resistance to acidic and enzymatic degradation comprising an elongated feeding tube having a first end for insertion through a patient'"'"'s abdominal wall and a second end including a feeding inlet, and an anchoring means mounted on the feeding tube to retain said feeding tube within the stomach, wherein said anchoring means has at least one internal retaining member comprised of a modified silicone elastomer selected from the group consisting of phenyl-modified silicone, fluoro-modified silicone, and combinations thereof, wherein the modified silicone elastomer is endcapped with a material selected from the group consisting of dimethylvinylsiloxane groups, trimethylsiloxy groups, methylphenylvinylsiloxy groups and hydroxyl groups.
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11. A gastrostomy feeding device comprising:
an elongated feeding tube having a first end for insertion through a patient'"'"'s abdominal wall and a second end including a feeding inlet, and an internal retaining member for retaining the feeding tube within the stomach, said internal retaining member comprised of a fluoro modified polysiloxane. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A gastrostomy feeding device comprising:
an elongated feeding tube having a first end for insertion through a patient'"'"'s abdominal wall and a second end including a feeding inlet, member for retaining the feeding tube within the stomach, said internal retaining member comprised of a phenyl modified polysiloxane, said phenyl modified polysiloxane containing phenyl groups in an amount less than about 25 mole percent. - View Dependent Claims (19, 20, 21, 22, 23, 24)
Specification