Medical Components Having Coated Surfaces Exhibiting Low Friction and Methods of Reducing Sticktion
First Claim
1. A medical article comprising:
- (a) a chamber formed from a cyclic polyolefin and having an inner surface in sliding engagement with an exterior surface of a sealing member, wherein the inner surface of the chamber has a coating thereon prepared from a composition comprising a first organopolysiloxane having a viscosity ranging from about 5,000 centistokes to about 100,000 centistokes, the coating being adhered to the inner surface by crosslinking induced by irradiation with an isotope, electron beam, or ultraviolet radiation; and
(b) a sealing member having an exterior surface in sliding engagement with the interior surface of the chamber, the exterior surface of the sealing member having a coating thereon prepared from a composition comprising a second organopolysiloxane having a viscosity ranging from about 10,000 centistokes to about 500,000 centistokes, the coating being adhered to the exterior surface by crosslinking induced by irradiation with an isotope, electron beam, or ultraviolet radiation.
2 Assignments
0 Petitions
Accused Products
Abstract
A medical article is provided including a chamber formed from a cyclic polyolefin having an inner surface in sliding engagement with an exterior surface of a sealing member, the inner surface of the chamber being coated with a first organopolysiloxane having a viscosity ranging from about 5,000 centistokes to about 100,000 centistokes; and a sealing member having an exterior surface coated with a second organopolysiloxane having a viscosity ranging from about 10,000 centistokes to about 500,000 centistokes, the coatings being adhered to the surfaces by crosslinking induced by irradiation with an isotope, electron beam, or ultraviolet radiation, as well as methods of reducing breakloose force, sustaining force, and/or sticktion between engaging surfaces in such articles.
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Citations
25 Claims
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1. A medical article comprising:
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(a) a chamber formed from a cyclic polyolefin and having an inner surface in sliding engagement with an exterior surface of a sealing member, wherein the inner surface of the chamber has a coating thereon prepared from a composition comprising a first organopolysiloxane having a viscosity ranging from about 5,000 centistokes to about 100,000 centistokes, the coating being adhered to the inner surface by crosslinking induced by irradiation with an isotope, electron beam, or ultraviolet radiation; and
(b) a sealing member having an exterior surface in sliding engagement with the interior surface of the chamber, the exterior surface of the sealing member having a coating thereon prepared from a composition comprising a second organopolysiloxane having a viscosity ranging from about 10,000 centistokes to about 500,000 centistokes, the coating being adhered to the exterior surface by crosslinking induced by irradiation with an isotope, electron beam, or ultraviolet radiation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for lubricating the interface between an inner surface of a chamber formed from a cyclic polyolefin and an exterior surface of a sealing member of a medical article, comprising the steps of:
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(a) applying a coating onto an inner surface of the chamber, the coating being prepared from a composition comprising a first organopolysiloxane having a viscosity ranging from about 5,000 centistokes to about 100,000 centistokes;
(b) applying a coating onto an exterior surface of the sealing member, the coating being prepared from a composition comprising a second organopolysiloxane having a viscosity ranging from about 10,000 centistokes to about 500,000 centistokes; and
(c) irradiating the coating of the inner surface of the chamber and the coating of the exterior surface of the sealing member with an isotope, electron beam, or ultraviolet radiation. - View Dependent Claims (22)
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23. A method for reducing breakloose force between an inner surface of a chamber formed from a cyclic polyolefin and an exterior surface of a sealing member of a medical article, comprising the steps of:
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(a) applying a coating onto an inner surface of the chamber, the coating being prepared from a composition comprising a first organopolysiloxane having a viscosity ranging from about 5,000 centistokes to about 100,000 centistokes;
(b) applying a coating onto an exterior surface of the sealing member, the coating being prepared from a composition comprising a second organopolysiloxane having a viscosity ranging from about 10,000 centistokes to about 500,000 centistokes; and
(c) irradiating the coating of the inner surface of the chamber and the coating of the exterior surface of the sealing member with an isotope, electron beam, or ultraviolet radiation.
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24. A method for reducing sustaining force between an inner surface of a chamber formed from a cyclic polyolefin and an exterior surface of a sealing member of a medical article, comprising the steps of:
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(a) applying a coating onto an inner surface of the chamber, the coating being prepared from a composition comprising a first organopolysiloxane having a viscosity ranging from about 5,000 centistokes to about 100,000 centistokes;
(b) applying a coating onto an exterior surface of the sealing member, the coating being prepared from a composition comprising a second organopolysiloxane having a viscosity ranging from about 10,000 centistokes to about 500,000 centistokes; and
(c) irradiating the coating of the inner surface of the chamber and the coating of the exterior surface of the sealing member with an isotope, electron beam, or ultraviolet radiation.
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25. A method for reducing sticktion between an inner surface of a chamber formed from a cyclic polyolefin and an exterior surface of a sealing member of a medical article, comprising the steps of:
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(a) applying a coating onto an inner surface of the chamber, the coating being prepared from a composition comprising a first organopolysiloxane having a viscosity ranging from about 5,000 centistokes to about 100,000 centistokes;
(b) applying a coating onto an exterior surface of the sealing member, the coating being prepared from a composition comprising a second organopolysiloxane having a viscosity ranging from about 10,000 centistokes to about 500,000 centistokes; and
(c) irradiating the coating of the inner surface of the chamber and the coating of the exterior surface of the sealing member with an isotope, electron beam, or ultraviolet radiation.
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Specification