Silicone urisheath with integrated adhesive
By using an oxidative process, it is possible to apply an adhesive material to silicone. The process is controlled, allowing selective oxidative treatment to a silicone structure, thus enabling treatment to the inside of a tubular structure.
1. A method of applying a pressure sensitive skin adhesive material to a cured, external urinary silicone catheter comprising:
(a) providing a cured, external urinary silicone catheter having an inner surface and an outer surface;
(b) selectively applying an oxidative process to only the inner surface of the silicone catheter along an annular inner band of the silicone catheter to provide an annular inner band of oxidized silicone; and
(c) applying the pressure sensitive skin adhesive material to a surface of the annular inner band of oxidized silicone by (i) rolling the catheter over a mandrel coated with the adhesive material and (ii) unrolling the catheter from the mandrel, so as to transfer the adhesive material from the mandrel to the annular inner band.
2. The method according to claim 1 , wherein the oxidative process is selected from the group consisting of oxidative-heat treatment, UV light, E-beam, gamma-irradiation, and chemical oxidative treatment.
3. The method according to claim 2 , wherein the oxidative-heat treatment is selected from the group consisting of corona treatment, plasma treatment, and flame treatment.
4. The method of claim 1 , wherein the adhesive material is a polar adhesive material.
5. The method of claim 4 , wherein the polar adhesive is based on acrylics, polyether, polyvinylether, polyurethane, or polyvinylpyrolidone.
6. The method of claim 1 , wherein the adhesive material is an acrylic pressure sensitive adhesive.
7. The method of claim 1 , wherein the silicone catheter is fully cured.
8. The method of claim 1 , wherein the silicone catheter is partly cured.
9. The method according to claim 2 , wherein the oxidative-heat treatment is applied selectively on selected parts of the silicone catheter.
10. The method of claim 9 , wherein the oxidative-heat treatment is applied selectively on an inside of the silicone catheter.
11. The method according to claim 1 , wherein the oxidative process is a corona treatment.
12. An external urinary catheter having a silicone material of construction, comprising:
a body having a first open end and a second closed end. the body defining an inner surface, an outer surface, and a length. between the first and second ends, the inner surface including. at least an annular inner band of oxidized silicone extending along less than the entire length of the body and the outer surface including an outermost annular band of non-oxidized silicone that covers at least the annular inner band; and
a pressure sensitive skin adhesive disposed on the annular inner band of oxidized silicone and configured as a rolled layer of the adhesive material transferred from an adhesive-coated mandrel.
13. A silicone urisheath having an outer surface and an inner surface, the silicone urisheath comprising:
an annular inner band of oxidized silicone forming the inner surface of the urisheath;
an outermost annular band of non-oxidized silicone that forms the outer surface of the silicone urisheath; and
a pressure sensitive skin adhesive that is (i) disposed on the annular inner band of oxidized silicone and (ii) configured as a rolled layer of the adhesive transferred from an adhesive-coated mandrel.
14. The silicone urisheath according to claim 13 , wherein the oxidative process is selected from the group consisting of oxidative-heat treatment, UV light, E-beam, gamma-irradiation, and chemical oxidative treatment.
15. The silicone urisheath according to claim 14 , wherein the oxidative-heat treatment is selected from the group consisting of corona treatment, plasma treatment, and flame treatment.
16. The silicone urisheath according to claim 13 , wherein the adhesive material is a polar adhesive material.
17. The silicone urisheath according to claim 16 , wherein the polar adhesive is based on acrylics, polyether, polyvinylether, polyurethane, or polyvinylpyrolidone.
18. The silicone urisheath according to claim 13 , wherein the adhesive material is an acrylic pressure sensitive adhesive.
19. The method of claim 1 , wherein selectively applying an oxidative process to only the inner surface of the silicone catheter includes selectively applying the oxidative process with a circular surface of an electrode.
20. The method of claim 1 , wherein a circular electrode is inserted within the silicone catheter during application of the oxidative process.