Wound dressing
AssigneeAdvanced Bio-Technologies, Inc.
InventorAlvin Berlat
Life of this patent
Estimating the term…
Abstract
A composition comprising a non-volatile silicone fluid in admixture with fumed silica, a volatile diluent and a silicone elastomer.
Claims35
A composition comprising a non-volatile silicone fluid in admixture with fumed silica, a volatile diluent and a silicone elastomer.
A composition as claimed in any one of the preceding claims wherein the silicone elastomer is in the form of a mixture comprising the silicone elastomer in a lower viscosity silicone fluid.
A composition as claimed in any one of the preceding claims wherein a mixture comprising 15% by volume of the silicone elastomer and 85% by volume of a linear polydimethylsiloxane having a viscosity of 5 centistokes at 25° C. has a kinematic viscosity of greater than or equal to 220,000 centistokes when measured according to ASTM D-1084.
A composition as claimed in any one of the preceding claims wherein a mixture comprising 15% by volume of the silicone elastomer and 85% by volume of a linear polydimethylsiloxane having a viscosity of 5 centistokes at 25° C. has a kinematic viscosity of greater than or equal to 800,000 centistokes when measured according to ASTM D-1084.
A composition as claimed in any one of the preceding claims wherein the fumed silica is present in an amount of greater than or equal to 1% by weight of the composition.
A composition as claimed in any one of the preceding claims wherein the volatile diluent is present in an amount of greater than or equal to 25% by weight of the composition.
A composition as claimed in any one of the preceding claims wherein the volatile diluent comprises a volatile silicone fluid.
A composition as claimed in any one of the preceding claims wherein the non-volatile silicone fluid has a kinematic viscosity of less than or equal to 200,000 centistokes when measured at 25° C.
A composition as claimed in any one of the preceding claims wherein the non-volatile silicone fluid comprises a silicone polymer, particularly a linear dimethicone.
A composition as claimed in any one of the preceding claims wherein the non-volatile silicone fluid is present in an amount of greater than or equal to 20% by weight of the composition.
A composition as claimed in any one of the preceding claims comprising:
- 1 to 5% by weight fumed silica;
- 35 to 65% by weight non-volatile silicone fluid;
- 25 to 65% by weight volatile diluent;
- and
- 1 to 5% by weight of a mixture of silicone elastomer and lower viscosity silicone fluid,
- wherein the component parts of the composition total 100% by weight.
A composition as claimed in any one of the preceding claims wherein the composition is in the form of a spreadable cream, gel, light grease or mobile spray on fluid.
A composition as claimed in any one of the preceding claims further including a pharmaceutical active agent, preferably a pharmaceutical active agent having antibacterial anti-inflammatory, antiviral and/or antifungal activity.
A composition as claimed in any one of the preceding claims wherein the composition further includes an antioxidant.
Use of a silicone elastomer for preparing a wound dressing.
A composition or wound dressing substantially as defined herein with reference to the description.
Dependencies are inferred from the claim text.