US3754552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible nasal cannula
Assignee: Sandoz AG
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Filing: 1971-06-08
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Granted: 1973-08-28
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Expires: 1991-06-08
Abstract
Abstract A flexible nasal cannula adapted for the intake of therapeutic gas from either the right or left side of a patient, wherein the top and bottom wall sections of the cross tube are tapered from the ends to the mid point of the cross tube.
Inventors
- 👤 W King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:43
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/06; A61M16/0666; A61M16/0672; A61M2205/00; A61M2205/02; A61M2205/0216
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
167 words
A flexible nasal cannula comprising in combination a cross tube, a pair of generally parallel upstanding nostril conduits in flow communication with said cross tube, a strap tab mounted at about each end of said cross tube, a plug mounted on one of said strap tabs at one end of said cross tube, said plug being removably and sealingly inserted in said one end, an inlet tube in flow communication with said cross tube end opposite to said plug end, said cross tube having upper, lower and side wall sections, said nostril conduits extending from said upper wall section, said cross tube having said upper and lower sections of its walls tapered from each end to the midsection, such that the thickness of the upper section is greater at the ends than at the midsection and the thickness of the lower section is greater at the midsection than at the ends, and the side walls of said cross tube are of uniform thickness from end to end.
Claim 2
Dependent Claim
167 words
A flexible nasal cannula comprising in combination a cross tube, a pair of generally parallel upstanding nostril conduits in flow communication with said cross tube, a strap tab mounted at about each end of said cross tube, a plug mounted on one of said strap tabs at one end of said cross tube, said plug being removably and sealingly inserted in said one end, an inlet tube in flow communication with said cross tube end opposite to said plug end, said cross tube having upper, lower and side wall sections, said nostril conduits extending from said upper wall section, said cross tube having said upper and lower sections of its walls tapered from each end to the midsection, such that the thickness of the upper section is greater at the ends than at the midsection and the thickness of the lower section is greater at the midsection than at the ends, and the side walls of said cross tube are of uniform thickness from end to end.
Claim 3
Dependent Claim
141 words
A flexible nasal cannula comprising in combination a cross tube having a closed end, a pair of generally parallel upstanding nostril conduits in flow communication with said cross tube, a strap tab mounted at about each end of said cross tube, an inlet tube in flow communication with the open end of said crosS tube, said cross tube having upper, lower and side wall sections, said nostril conduits extending from said upper wall section, said cross tube having said upper and lower sections of its walls tapered from each end to the midsection such that the thickness of said upper section is greater at the ends than the midsection and the thickness of the lower section is greater at the midsection than at the ends, and the side walls of said cross tube are of uniform thickness from end to end.
Claim 4
Dependent Claim
141 words
A flexible nasal cannula comprising in combination a cross tube having a closed end, a pair of generally parallel upstanding nostril conduits in flow communication with said cross tube, a strap tab mounted at about each end of said cross tube, an inlet tube in flow communication with the open end of said crosS tube, said cross tube having upper, lower and side wall sections, said nostril conduits extending from said upper wall section, said cross tube having said upper and lower sections of its walls tapered from each end to the midsection such that the thickness of said upper section is greater at the ends than the midsection and the thickness of the lower section is greater at the midsection than at the ends, and the side walls of said cross tube are of uniform thickness from end to end.
References Cited (Backward Citations)
US2735432A
Cited
US2171023A
Cited
US2499650A
Cited
US2693800A
Cited
FR1124404A
Cited
US2868199A
Cited
US3083969A
Cited
US3513844A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |