US3786811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Syringe construction
Assignee: MEDICAL DEV CORP
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Filing: 1971-08-12
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Granted: 1974-01-22
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Expires: 1991-08-12
Abstract
Abstract The compact syringe construction wherein the internal plunger is externally actuated by a side-mount actuator so connected to an interior plunger portion that a forward advance of the actuator will effect a forward advance of the interior plunger, this for desired liquid expression from the syringe. Two embodiments of the invention specifically disclose teachable, flexible elongate connector inter-engagement of the plunger and actuator and also a pin-type sealed interconnection. General syringe improvements as to slanted forward-face closure, and related items are included.
Inventors
- 👤 Grand Holbrook Le
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:53
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/178; A61M5/31; A61M5/3129; A61M5/315; A61M5/31511; A61M2005/31518
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
104 words
A syringe including in combination, an elongate container, piston means operatively disposed within said container, actuator meaNs retentively externally engaging said container and constructed for longitudinal slideable movement therealong, and means for coupling said piston means to said actuator means for mutual same-directional travel therewith, and wherein said coupling means comprises a flexible elongate connector interengaging said piston means and said actuator means and being doubled back within said container to form a doubled-back forward extremity, and slip anchor means disposed forwardly within and secured to said container slideably engaging said flexible elongate connector at said doubled-back forward extremity of said flexible elongate connector.
Claim 2
Dependent Claim
104 words
A syringe including in combination, an elongate container, piston means operatively disposed within said container, actuator meaNs retentively externally engaging said container and constructed for longitudinal slideable movement therealong, and means for coupling said piston means to said actuator means for mutual same-directional travel therewith, and wherein said coupling means comprises a flexible elongate connector interengaging said piston means and said actuator means and being doubled back within said container to form a doubled-back forward extremity, and slip anchor means disposed forwardly within and secured to said container slideably engaging said flexible elongate connector at said doubled-back forward extremity of said flexible elongate connector.
Claim 3
Dependent Claim
20 words
Structure according to claim 1 wherein said piston includes a slot slideably and sealingly receiving said flexible elongate connector therethrough.
Claim 4
Dependent Claim
25 words
Structure according to claim 1 wherein said container has an exterior, integral, longitudinally disposed, track, said actuator being constructed to retentively, slideably engage said track.
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) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |