Method for producing a silver-containing wound care device
First Claim
1. A process for producing a wound care device having a surface, at least a portion of which is coated with a non-electrically conductive finish,wherein each coated wound care device exhibits a controlled silver-ion release rate of less than about 33 μ
- g/cm2 of silver ions over a 24 hour period, and wherein said finish exhibits antimicrobial properties;
said process comprising the steps of;
(a) providing said wound care device;
(b) providing said non-electrically conductive finish, wherein (1) said non-electrically conductive finish comprises silver zirconium phosphate, at least one binder material selected from the group consisting of polyurethane binders and acrylic binders, and at least one halide ion containing compound selected from the group consisting of metal halides and hydrohalic acids, (2) said finish is substantially free from alkali metal ions, and (3) molar ratio between the amount of halide ions available in said finish and the amount of silver ions available in said finish is 1;
10 to 5;
1; and
(c) applying said non-electrically conductive finish to at least a portion of said surface without causing discoloration of said surface, wherein said finish contains amounts of silver zirconium phosphate, said at least one binder material, and said at least one halide ion containing compound effective to exhibit a controlled silver-ion release that is antimicrobially effective and less than about 33 μ
g/cm2 of silver ions over a 24 hour period.
3 Assignments
0 Petitions
Accused Products
Abstract
Wound care devices having a topically applied silver-based antimicrobial finish are provided. The finish comprises at least one silver ion-containing compound and at least one binder compound. The finish may be applied to a target substrate, such as a fiber, fabric, film, foam, hydrogel, or hydrocolloid to provide a single layer antimicrobial wound care device. Alternatively, a silver-containing layer may be combined with one or more additional layers of target substrate to provide a composite antimicrobial wound care device. The device may also contain an odor-absorbing component capable of reducing or eliminating odors that are inherently associated with infectious wounds. Also provided is a method for making the wound care device and a composition of matter comprising the silver-based antimicrobial finish.
-
Citations
18 Claims
-
1. A process for producing a wound care device having a surface, at least a portion of which is coated with a non-electrically conductive finish,
wherein each coated wound care device exhibits a controlled silver-ion release rate of less than about 33 μ - g/cm2 of silver ions over a 24 hour period, and wherein said finish exhibits antimicrobial properties;
said process comprising the steps of; (a) providing said wound care device; (b) providing said non-electrically conductive finish, wherein (1) said non-electrically conductive finish comprises silver zirconium phosphate, at least one binder material selected from the group consisting of polyurethane binders and acrylic binders, and at least one halide ion containing compound selected from the group consisting of metal halides and hydrohalic acids, (2) said finish is substantially free from alkali metal ions, and (3) molar ratio between the amount of halide ions available in said finish and the amount of silver ions available in said finish is 1;
10 to 5;
1; and(c) applying said non-electrically conductive finish to at least a portion of said surface without causing discoloration of said surface, wherein said finish contains amounts of silver zirconium phosphate, said at least one binder material, and said at least one halide ion containing compound effective to exhibit a controlled silver-ion release that is antimicrobially effective and less than about 33 μ
g/cm2 of silver ions over a 24 hour period.- View Dependent Claims (2, 3, 4, 5, 6)
- g/cm2 of silver ions over a 24 hour period, and wherein said finish exhibits antimicrobial properties;
-
7. A process for producing a wound care device having a surface, at least a portion of which is coated with a non-electrically conductive finish,
wherein each coated wound care device exhibits a controlled silver-ion release rate of less than about 25 μ - g/cm2 of silver ions over a 24 hour period, and wherein said finish exhibits antimicrobial properties;
said process comprising the steps of; (a) providing said wound care device; (b) providing said non-electrically conductive finish, wherein (1) said non-electrically conductive finish comprises silver zirconium phosphate, at least one binder material selected from the group consisting of polyurethane binders and acrylic binders, and at least one halide ion containing compound selected from the group consisting of metal halides and hydrohalic acids, (2) said finish is substantially free from alkali metal ions, and (3) molar ratio between the amount of halide ions available in said finish and the amount of silver ions available in said finish is 1;
10 to 5;
1; and(c) applying said non-electrically conductive finish to at least a portion of said surface without causing discoloration of said surface, wherein said finish contains amounts of silver zirconium phosphate, said at least one binder material, and said at least one halide ion containing compound effective to exhibit a controlled silver-ion release that is antimicrobially effective and less than about 25 μ
g/cm2 of silver ions over a 24 hour period.- View Dependent Claims (8, 9, 10, 11, 12)
- g/cm2 of silver ions over a 24 hour period, and wherein said finish exhibits antimicrobial properties;
-
13. A process for producing a microdenier nonwoven wound care device having a surface, at least a portion of which is coated with a non-electrically conductive finish,
wherein each coated wound care device exhibits a controlled silver-ion release rate of less than about 10 μ - g/cm2 of silver ions over a 24 hour period, and wherein said finish exhibits antimicrobial properties;
said process comprising the steps of; (a) providing said wound care device; (b) providing said non-electrically conductive finish, wherein (1) said non-electrically conductive finish comprises silver zirconium phosphate, at least one binder material selected from the group consisting of polyurethane binders and acrylic binders, and at least one halide ion containing compound selected from the group consisting of metal halides and hydrohalic acids, (2) said finish is substantially free from alkali metal ions, and (3) molar ratio between the amount of halide ions available in said finish and the amount of silver ions available in said finish is 1;
10 to 5;
1; and(c) applying said non-electrically conductive finish to at least a portion of said surface without causing discoloration of said surface, wherein said finish contains amounts of silver zirconium phosphate, said at least one binder material, and said at least one halide ion containing compound effective to exhibit a controlled silver-ion release that is antimicrobially effective and less than about 10 μ
g/cm2 of silver ions over a 24 hour period.- View Dependent Claims (14, 15, 16, 17, 18)
- g/cm2 of silver ions over a 24 hour period, and wherein said finish exhibits antimicrobial properties;
Specification