Lubricious coatings
View Patent ↗The present disclosure provides substrates having a lubricious coating thereon. The substrate may be flexible and include, in embodiments, a medical device. The lubricious coating, in embodiments, is applied in a pattern so that the coating avoids delamination and/or fracturing which might otherwise occur as the substrate flexes and/or stretches.
1. A method for manufacturing a seal, comprising:
providing a seal;
applying a patterned lubricious coating in a dot matrix pattern on at least a portion of the seal to lower the coefficient of friction of the seal, the dot matrix pattern including a plurality of cured dots, each dot being devoid of interconnection with the other dots of the dot matrix pattern.
2. The method of claim 1 , wherein the coating is selected from the group consisting of cyanoacrylates, epoxies, hydrophilic polymers, hydrogels, polyalkylene oxides, urethanes, polyurethanes, siloxanes, cyclosiloxanes, polyalkylsiloxanes, polydialkylsiloxanes, parylenes, and combinations thereof.
3. The method of claim 1 , wherein the coating is selected from the group consisting of polyethylene oxide, polypropylene oxide, polyethylene oxide/polypropylene oxide copolymers, polyethylene glycol, polypropylene glycol, polydimethylsiloxanes, polydiethylsiloxanes, polydipropylsiloxanes, polydibutylsiloxanes, parylene N, parylene C, parylene D, parylene HT, and combinations thereof.
4. The method of claim 1 , wherein the coating is applied by a method selected from the group consisting of gravure coating, spray coating, melt blowing, flexographic printing, screen printing, and combinations thereof.
5. The method of claim 1 , wherein the coating is applied in powder form.
6. The method of claim 1 , wherein the coating is applied as a coating solution including a solvent selected from the group consisting of tetrahydrofuran, methylene chloride, methanol, ethanol, propanol, chloroform, 1,2-dichloro-ethane, hexane, heptene, ethyl acetate, and combinations thereof.
7. The method of claim 6 , wherein the coating solution comprises from about 30 to about 70 weight percent solvent.
8. The method of claim 1 , further comprising heating the coating to a temperature from about 80° F. to about 350° F.
9. The method of claim 1 , wherein the seal possesses a coating-free surface area from about 75% to about 99%.
10. The method of claim 1 , wherein a dot of the dot matrix pattern has a ratio of height to diameter from about 0.05:1 to about 2:1.
11. The method of claim 1 , further comprising enabling the seal to receive an object in a substantially sealed relationship with the object such that the coating facilitates reception of the object.
12. The method of claim 1 , further comprising providing at least one of the dots with a substantially polygonal shape.
13. The method of claim 1 , further comprising providing at least one of the dots with a substantially circular shape.
14. The method of claim 1 , further comprising providing at least some of the dots lined in rows.
15. The method of claim 14 , further comprising offsetting adjacent rows.
16. The method of claim 1 , further comprising disposing a plurality of the dots in a random pattern.