MEDICAL DEVICES HAVING DURABLE AND LUBRICIOUS POLYMERIC COATING
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Abstract
A medical device having a contact surface exposed repeatedly to bodily tissue is disclosed. The contact surface is coated with a silicone polymer and one or more non-silicone hydrophobic polymers. The preferred medical device is a surgical needle, and the preferred coating is a polydimethylsiloxane and polypropylene wax hydrocarbon mixture. The incorporation of the non-silicone hydrophobic polymer increases the durability of the coating on the device without sacrificing lubricity.
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Citations
57 Claims
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1-17. -17. (canceled)
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18. :
- A process for coating a contact surface of a medical device exposed repeatedly to bodily tissue, the process comprising the steps of;
a) applying a first layer of a non-silicone hydrophobic polymer to the contact surface; and
,b) applying a second layer of a silicone polymer over the first layer. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 42, 44, 45)
- A process for coating a contact surface of a medical device exposed repeatedly to bodily tissue, the process comprising the steps of;
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28. :
- A coated medical device, comprising;
a medical device having a surface; a first coating applied to at least a portion of the surface, said coating comprising a non-silicone hydrophobic polymer; and
,a second coating applied over the first coating, said second coating comprising a silicone polymer. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 43, 46)
- A coated medical device, comprising;
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47. :
- A process for coating a contact surface of a medical device exposed repeatedly to bodily tissue, the process comprising the steps of
a) mixing a silicone polymer and a non-silicone hydrophobic polymer with a solvent to form a coating mixture, b) applying the coating mixture to the contact surface, and c) removing the solvent from the coating mixture. - View Dependent Claims (48, 49, 50, 51, 52, 53, 54, 55, 56, 57)
- A process for coating a contact surface of a medical device exposed repeatedly to bodily tissue, the process comprising the steps of
Specification