US7041088B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Medical devices having durable and lubricious polymeric coating
Assignee: Ethicon Inc
•
Filing: 2003-10-03
•
Granted: 2006-05-09
•
Expires: 2023-10-03
Abstract
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.
Inventors
- 👤 Jesse G. Nawrocki
- 👤 Dennis D. Jamiolkowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:25
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/04; A61B17/06; A61B17/06066; A61L; A61L31/00; A61L31/08; A61L31/10; A61B17/32; A61B17/3209; A61B17/3211; A61L29/00; A61L29/08; A61L29/085; A61L29/14; A61L31/14; C; C08; C08L; C08L83/00; C08L83/04; A61L2420/00; A61L2420/06; C08G; C08G77/00; C08G77/04; C08G77/14; C08G77/16; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31663; Y10T428/31855
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
48 words
A medical device having a contact surface exposed repeatedly to bodily tissue, the contact surface being coated with a coating mixture comprising from about 40 to about 86 weight percent of a silicone polymer and from about 14 to about 60 weight percent of a non-silicone hydrophobic polymer.
Claim 2
Dependent Claim
48 words
A medical device having a contact surface exposed repeatedly to bodily tissue, the contact surface being coated with a coating mixture comprising from about 40 to about 86 weight percent of a silicone polymer and from about 14 to about 60 weight percent of a non-silicone hydrophobic polymer.
Claim 3
Dependent Claim
13 words
The medical device of claim 1 wherein the silicone polymer is a polyalkylsiloxane.
Claim 4
Dependent Claim
12 words
The medical device of claim 2 wherein the polyalkylsiloxane is a polydimethylsiloxane.
Claim 5
Dependent Claim
22 words
The medical device of claim 3 wherein the non-silicone hydrophobic polymer has a critical surface tension of less than about 50 mN/m.
Claim 6
Dependent Claim
15 words
The medical device of claim 4 wherein the non-silicone hydrophobic polymer is a thermoplastic polymer.
Claim 7
Dependent Claim
18 words
The medical device of claim 5 wherein the thermoplastic polymer is flowable at less than about 210 C.
Claim 8
Dependent Claim
32 words
The medical device of claim 6 wherein the coating has about 44 to about 66 weight percent of the polydimethylsiloxane and about 34 to about 56 weight percent of the thermoplastic polymer.
Claim 9
Dependent Claim
14 words
The medical device of claim 7 wherein the medical device is a surgical needle.
Claim 10
Dependent Claim
12 words
The medical device of claim 8 wherein the polydimethylsiloxane is hydroxy terminated.
Claim 11
Dependent Claim
15 words
The medical device of claim 9 wherein the thermoplastic polymer is polyethylene, polypropylene or polycaprolactone.
Claim 12
Dependent Claim
32 words
The medical device of claim 1 wherein the coating comprises a mixture of an hydroxy terminated polydimethylsiloxane and a non-silicone hydrophobic polymer selected from the group consisting of polyethylene, polypropylene and polycaprolactone.
Claim 13
Dependent Claim
36 words
The medical device of claim 11 wherein the coating mixture has about 44 to about 66 weight percent of the hydroxy terminated polydimethylsiloxane and about 34 to about 56 weight percent of the non-silicone hydrophobic polymer.
Claim 14
Dependent Claim
14 words
The medical device of claim 12 wherein the medical device is a surgical needle.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2009-05-08 | 2009-11-07 | 2010-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2013-05-08 | 2013-11-07 | 2014-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2017-05-08 | 2017-11-07 | 2018-05-09 | $7700.00 | Window Closed / Lapsed |