US4489722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser resistant endotracheal tube
Assignee: Medical Engineering Corp
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Filing: 1982-09-27
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Granted: 1984-12-25
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Expires: 2002-09-27
Abstract
Abstract A catheter such as an endotracheal tube is rendered resistant to laser beam impaction by coating the cuff and/or the tube with a laser-reflective compound which is preferably comprised of one to three parts of powdered aluminum to one part silicone rubber solution. The laser-reflective compound may be permanently bonded to the cuff and/or the tube by first dipping the cuff and/or the tube in a bath of the compound to form a smooth outer coating on the cuff and/or the tube and then baking the cuff and/or the tube to cure the coating. The laser-reflective coating serves to reflect the laser beam, thus making the catheter laser resistant while the smoothness of the coating aids in catheter insertion.
Inventors
- 👤 Rick J. Ferraro
- 👤 Henry W. Lynch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:53
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/04; A61M16/0402; A61M16/0422; A61B; A61B90/00; A61B90/04; A61B2090/049
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
67 words
In combination with an endotracheal tube including a fluid carrying conduit having an open proximal end an an open distal end, an elastomeric cuff attached to said tube approximate the distal end thereof and means for inflating said cuff, the improvement comprising: a smooth, laser-reflective coating covering both that portion of said endotracheal tube which extends from said tube cuff towards said proximal end and said cuff.
Claim 2
Dependent Claim
67 words
In combination with an endotracheal tube including a fluid carrying conduit having an open proximal end an an open distal end, an elastomeric cuff attached to said tube approximate the distal end thereof and means for inflating said cuff, the improvement comprising: a smooth, laser-reflective coating covering both that portion of said endotracheal tube which extends from said tube cuff towards said proximal end and said cuff.
Claim 3
Dependent Claim
21 words
The invention according to claim 1 wherein said smooth, laser-reflective coating comprises a mixture of an elastomer and a powdered metal.
Claim 4
Dependent Claim
28 words
The invention according to claim 1 wherein said smooth, laser-reflective coating comprises a mixture consisting of one to three parts of powdered aluminum to one part silicone rubber.
References Cited (Backward Citations)
US3854484A
Cited
GB1447987A
Cited
DE2426344A1
Cited
US4090518A
Cited
US4166467A
Cited
FR2463624A1
Cited
US4378796A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-12-25 | 1988-06-25 | 1988-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-25 | 1992-06-25 | 1992-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-25 | 1996-06-25 | 1996-12-25 | $7700.00 | Window Closed / Lapsed |