Granted Patent B2

US 12,558,462 · App. 18/234,308 · Granted Feb 24, 2026

Inventors: Gregory M. Cruise (Rancho Santa Margarita, CA); Steve Plotkin (Beaumont, CA); Emily Hsu (Irvine, CA)

Assignee: MicroVention, Inc.

A61L29/085A61L29/041B05D3/067B05D7/546C09D133/14C09D135/02A61L2300/452A61L2400/10A61L2420/02A61L2420/08

Abstract

Claims (24)

1 . A coating comprising:

a base coat including a copolymer of a first tetrahydrofurfuryl monomer and a second monomer, and

a top coat including an 8 arm polyethylene glycol macromer;

wherein the coating is lubricious.

2 . The coating of claim 1 , wherein the copolymer has a molecular weight between about 15,000 g/mole and about 150,000 g/mole.

3 . The coating of claim 1 , wherein the top coat is atop the base coat.

4 . The coating of claim 1 , wherein the polyethylene glycol macromer has a molecular weight of 20,000 g/mole.

5 . A catheter or microcatheter coated with the coating of claim 1 .

6 . The coating of claim 1 , wherein the 8 arm polyethylene glycol macromer is derivatized with acryloyl chloride.

7 . The coating of claim 6 , wherein the first copolymer has a molecular weight between about 15,000 g/mole and about 150,000 g/mole.

8 . The coating of claim 6 , wherein the top coat is atop the base coat.

9 . A catheter or microcatheter coated with the coating of claim 6 .

10 . A method of coating a thermoplastic surface, the method comprising:

applying a base coat including a copolymer of a first tetrahydrofurfuryl acrylate monomer and a second monomer to the thermoplastic surface, and

applying a top coat to the base coat, wherein the top coat includes an 8 arm polyethylene glycol macromer derivatized with acryloyl chloride,

wherein the coating is lubricious.

11 . The method of claim 10 , wherein the thermoplastic surface is plasma treated before applying the base coat.

12 . The method of claim 10 , wherein the base coat, the top coat, or both is applied by dipping.

13 . The method of claim 10 , wherein the base coat is exposed to ultraviolet radiation.

14 . The method of claim 13 , wherein the ultraviolet radiation is at a wavelength ranging from about 10 nm to about 400 nm.

15 . The method of claim 14 , wherein the base coat cures for about 0.5 to about 10 minutes.

16 . The method of claim 10 , wherein the top coat is exposed to ultraviolet radiation.

17 . The method of claim 13 , wherein the ultraviolet radiation is at a wavelength ranging from about 10 nm to about 400 nm.

18 . The method of claim 14 , wherein the top coat cures for about 0.5 to about 10 minutes.

Assignments (1)

Continuity (3)

References Cited (113)