Patent US3605744A successfully refreshed from Google Patents.
US3605744A
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US
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Injection apparatus and method of injecting
Assignee: Individual
•
Filing: 1969-04-22
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Granted: 1971-09-20
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Expires: 1989-04-22
Abstract
Abstract AN INJECTION APPARATUS USEABLE FOR BOTH PRE-INJECTION AND COMPLETING THE INJECTION OF AN ANESTHETIC, AND A METHOD OF PRE-INJECTING AND COMPLETING THE INJECTION. PREINJECTION IS ACCOMPLISHED AT A HIGH PRESSURE AND THEREAFTER THE INJECTION IS COMPLETED AT A LOWER PRESSURE UNDER MANUAL CONTROL. BOTH INJECTION STAGES UTILIZE A NEEDLE. THE APPARATUS ALSO INCLUDES A SPRING LOADED PLUNGER MOVABLE TO INJECT ANESTHETIC THROUGH THE NEEDLE AT A HIGH PRESSURE AND FURTHER MOVABLE FOR MANUAL INJECTION OF ANESTHETIC THROUGH THE NEEDLE AT THE LOWER PRESSURE. THE NEEDLE IS ADJUSTABLE RELATIVE TO THE INJECTOR HOUSING FOR DEEPER TISSUE PENETRATION DURING THE LOW PRESSURE INJECTION.
Inventors
- 👤 Edward M Dwyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:29
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/178; A61M5/20; A61M5/2033; A61M5/24; A61M2005/2403; A61M2005/2407; A61M5/2455; A61M5/2466; A61M2005/247; A61M2005/2485; A61M2005/2488; A61M5/31; A61M5/32; A61M5/34; A61M2005/341; A61M5/206; A61M5/46; A61M5/48; A61M5/482
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |