US4938746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel nasogastric device
Assignee: Kendall Co
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Filing: 1988-03-25
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Granted: 1990-07-03
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Expires: 2008-03-25
Abstract
Abstract Nasogastric intubation device having a removable stylet or stiffening wire to facilitate proper intubation, wherein the stylet is provided with a surface coating consisting essentially of alkaline earth metal salts of an unsaturated and a saturated higher fatty acid containing at least 16 carbon atoms.
Inventors
- 👤 Robert W. Etheredge, III
- 👤 John C. Charkoudian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:01
CPC Classifications
A; A61; A61L; A61L29/00; A61L29/08; A61J; A61J15/00; A61J15/0003; A61J15/0007; A61M; A61M25/00; A61M25/0043; A61M25/0045; A61M2025/0046; A61M2025/0062; A61M25/01; A61M25/0102
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
74 words
A flexible stylet adapted for being removably inserted within a nasogastric tube in order to assist in intubation, said stylet having a surface coating of a substantially homogeneous non-aqueous mixture consisting essentially of an alkaline earth metal salt of an unsaturated higher fatty acid having at least sixteen carbon atoms; and up to equal parts by weight of an alkaline earth metal salt of a saturated fatty acid having at least sixteen carbon atoms.
Claim 2
Dependent Claim
74 words
A flexible stylet adapted for being removably inserted within a nasogastric tube in order to assist in intubation, said stylet having a surface coating of a substantially homogeneous non-aqueous mixture consisting essentially of an alkaline earth metal salt of an unsaturated higher fatty acid having at least sixteen carbon atoms; and up to equal parts by weight of an alkaline earth metal salt of a saturated fatty acid having at least sixteen carbon atoms.
Claim 3
Dependent Claim
17 words
A stylet as defined in claim 1 wherein said unsaturated fatty acid is oleic or linoleic acid.
Claim 4
Dependent Claim
17 words
A stylet as defined in claim 2 wherein said saturated fatty acid is stearic or palmitic acid.
Claim 5
Dependent Claim
30 words
A stylet as defined in claim 3 wherein the ratio by weight of said unsaturated fatty acid salt to said saturated fatty acid salt is no less than about 4:1.
Claim 6
Dependent Claim
27 words
A stylet as defined in claim 1 wherein said mixture contains from about 80 to about 90 per cent by weight of said unsaturated fatty acid salt.
Claim 7
Dependent Claim
124 words
A nasogastric intubation device including a tube adapted to be inserted through the nose and into the stomach, said tube having a leading end for positioning in the stomach and a trailing end, said tube having at least one port adjacent its leading end for passage of fluid to or from said tube; and a flexible stylet removably insertable into said trailing end of said tube to assist in intubation, said stylet having a surface coating of a substantially homogeneous non-aqueous mixture of an alkaline earth metal salt of an unsaturated higher fatty acid having at least sixteen carbon atoms; and up to equal parts by weight of an alkaline earth metal salt of a saturated fatty acid having at least sixteen carbon atoms.
Claim 8
Dependent Claim
124 words
A nasogastric intubation device including a tube adapted to be inserted through the nose and into the stomach, said tube having a leading end for positioning in the stomach and a trailing end, said tube having at least one port adjacent its leading end for passage of fluid to or from said tube; and a flexible stylet removably insertable into said trailing end of said tube to assist in intubation, said stylet having a surface coating of a substantially homogeneous non-aqueous mixture of an alkaline earth metal salt of an unsaturated higher fatty acid having at least sixteen carbon atoms; and up to equal parts by weight of an alkaline earth metal salt of a saturated fatty acid having at least sixteen carbon atoms.
Claim 9
Dependent Claim
17 words
A device as defined in claim 6 wherein said unsaturated fatty acid is oleic or linoleic acid.
Claim 10
Dependent Claim
17 words
A device as defined in claim 7 wherein said saturated fatty acid is stearic or palmitic acid.
Claim 11
Dependent Claim
30 words
A device as defined in claim 8 wherein the ratio by weight of said unsaturated fatty acid salt to said saturated fatty acid salt is no less than about 4:1.
Claim 12
Dependent Claim
27 words
A device as defined in claim 6 wherein said mixture contains from about 80 to about 90 per cent by weight of said unsaturated fatty acid salt.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-07-02 | 1994-01-01 | 1994-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-02 | 1998-01-01 | 1998-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-02 | 2002-01-01 | 2002-07-03 | $7700.00 | Window Closed / Lapsed |