Surgical dressing and an adhesive composition therefor
DCFirst Claim
1. An adhesive surgical dressing comprising:
- a backing layer having first and second side surfaces, andan adhesive composition applied to one of said surfaces;
said adhesive composition comprising a three-dimensional, open cell mesh network of discrete polymeric filaments coated with a tacky water-insoluble adhesive material having an adherence affinity for said filaments and joining the coated filaments together at their intersections to maintain the integrity of said said network;
and a hydrocolloid material composed of one or more water-absorbing and swellable hydrocolloids, said hydrocolloid material being dispersed throughout the open cells of said network;
said network being expandable for retaining said hydrocolloid material when said hydrocolloid material absorbs water and swells as it becomes hydrated,said filaments constituting no less than 3% by weight of said adhesive composition.
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Abstract
An adhesive composition, and the surgical dressing of which it is a part, in which the composition takes the form of a water-absorbing and water-swellable hydrocolloid material distributed throughout the interstices of a three-dimensional, open-mesh, randomly-oriented network of flexible, water-insoluble, polymeric filaments, such filaments being surface coated by a tacky, water-insoluble adhesive material that has an adherence affinity for the filaments and that secures such coated filaments together at their points or zones of contact. When hydrated, the hydrocolloid material swells and become a gelatinous continuous phase, with the network of filaments expanding to retain the hydrated hydrocolloid material within the dressing. Despite the phase change, the water-insoluble adhesive material is also retained within the dressing because of its strong adherence to the filaments of the network.
71 Citations
21 Claims
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1. An adhesive surgical dressing comprising:
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a backing layer having first and second side surfaces, and an adhesive composition applied to one of said surfaces; said adhesive composition comprising a three-dimensional, open cell mesh network of discrete polymeric filaments coated with a tacky water-insoluble adhesive material having an adherence affinity for said filaments and joining the coated filaments together at their intersections to maintain the integrity of said said network; and a hydrocolloid material composed of one or more water-absorbing and swellable hydrocolloids, said hydrocolloid material being dispersed throughout the open cells of said network; said network being expandable for retaining said hydrocolloid material when said hydrocolloid material absorbs water and swells as it becomes hydrated, said filaments constituting no less than 3% by weight of said adhesive composition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An adhesive composition for securing a surgical dressing to a patient'"'"'s skin, said composition comprising:
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a three-dimensional, open cell mesh network of discrete polymeric filaments coated with a tacky water-insoluble adhesive material having an adherence affinity for said filaments and joining the coated filaments together at their intersections to maintain the integrity of said network; and a hydrocolloid material composed of one or more water-absorbing and swellable hydrocolloids, said hydrocolloid material being dispersed throughout the open cells of said network; said network being expandable for retaining said hydrocolloid material when said hydrocolloid material absorbs water and swells as it becomes hydrated, said filaments constituting no less than 3% by weight of said adhesive composition. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification