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US3182660A Expired / Lapsed US ⏱️ 0.0 years remaining

Hypodermic syringe with spring biassed piston

Assignee: Individual
•
Filing: 1962-10-05
•
Granted: 1965-05-11
•
Expires: 1982-10-05
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Abstract

Abstract 1,008,915. Hypodermic syringes. G. DAUELSBERG [trading as PENICILLINGESELLSCHAFT DAUELSBERG CO.] Oct, 8. 1962 [Oct. 7, 1961; May 29, 1962], No. 37954/62. Heading A5R. An ampoule-needle unit for use in conjunction with a plunger in a hypodermic syringe, comprises a cylindrical sleeve 1 sealed at each end by a vapour-tight plug 3, 7 and containing a cannula 5 with a point at each end and a transparent synthetic plastics ampoule 2, the plug and the end of the ampoule adjacent the cannula being pierceable by the cannula and the ampoule being sealed at its other end by a plunger plug 3. The plunger plug and the plug sealing the cylindrical sleeve are the same. The cannula is slidably mounted in a socket 4 at the front of the ampoule. The ampoule and cannula are slidable in the sleeve 1. Actuating mechanism comprises a casing 9 in the forward end of which the ampoule-needle unit is secured by a spring ring 12. A piston 13, which abuts the plug 3 when the device is assembled, has a shaft 15 which passes through the rear end of the casing 9 and has a collar 20 which enables it to be locked in retracted position against a spring 18. A release cap 19 is mounted over the rear end of the casing and the piston shaft. Bevelled rollers 32 (Pyure 3) mounted on axle pins 31 are held in engagement with the piston shaft by a retainer ring 24. An extension 33 of one axle pin rests against the base of the cap 19. To release the piston, the cap is rotated so that the axle pin extension enters a recess 34 and then is moved axially to displace the retainer ring, so that the rollers move apart and permit projection of the piston by the spring.

Inventors

  • 👤 Weydanz Wilhelm
  • 👤 Hubensack Walter
  • 👤 Ronnenberg Rudi

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 05:11
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/178; A61M5/20; A61M5/2033; A61M5/24; A61M2005/2073; A61M2005/2403; A61M2005/2411; A61M5/206; A61M5/2455; A61M5/2459

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 351 words
A HYPODERMIC SYRINGE FOR SELF ADMINISTERING INJECTIONS COMPRISING A FIRST UNIT AND A SECOND UNIT RECEIVING SAID FIRST UNIT, SAID FIRST UNIT COMPRISING A CYLINDRICAL HOUSING OPEN AT ONE END AND HAVING A BOTTOM WALL TO CLOSE THE OTHER END, SAID BOTTOM WALL DEFINING A CENTRAL OPENING, A RELEASE CAP TELESCOPICALLY SURROUNDING SAID CLOSED OTHER END OF SAID CYLINDRICAL HOUSING, A PISTON HAVING A SHAFT EXTENDING THEREFROM AND DISPOSED IN SAID CYLINDRICAL HOUSING ADJACENT SAID BOTTOM WALL AND SAID SHAFT EXTENDING THROUGH SAID CENTRAL OPENING OF SAID BOTTOM WALL, SAID PISTON HAVING A COLLAR AT ITS END REMOTE FROM SAID SHAFT, A COMPRESSION SPRING IN SAID CYLINDRICAL HOUSING AND ENGAGING THE INNER FACE OF SAID BOTTOM WALL AND SAID COLLAR OF SAID PISTON RESPECTIVELY, THEREBY URGING SAID PISTON INTO THE INNERMOSE POSITION IN SAID CYLINDRICAL HOUSING, RELEASABLE LOCKING MEANS COOPERATING WITH SAID SHAFT AND RETAINING SAID PISTON IN ITS WITHDRAWN POSITION AGAINST THE FORCE OF SAID COMPRESSION SPRING, AND SAID SECOND UNIT COMPRISING A CYLINDRICAL METAL CONTAINER FITTINGLY AND IMMOVABLY DISPOSED IN AND AT THE OPEN END OF SAID CYLINDRICAL CONTAINER, AN AMPULE OF PLASTIC MATERIAL IMMOVABLY RECEIVED IN AND AT THE INNER END OF SAID METAL CONTAINER AND DISPOSED ADJACENT SAID PISTON, A FIRST DIAPHRAGM CLOSING ONE END OF SAID AMPULE, A FIRST PLUG DISPOSED AT THE OTHER END OF SAID AMPULE AND AXIALLY DISPLACEABLE IN THE LATTER, SAID PLUG ENGAGING THE END OF SAID PISTON AND BEING ACTUATED BY THE LATTER, A SECOND PLUG SECURED TO AND RETAINED AT THE OUTER END OF SAID METAL CONTAINER, A SECOND DIAPHRAGM DISPOSED IN SAID SECOND PLUG, A HYPODERMIC NEEDLE AXIALLY MOVABLY DISPOSED IN SAID METAL CONTAINER BETWEEN SAID FIRST DIAPHRAGM AND SAID SECOND DIAPHRAGM AND HAVING POINTED ENDS, SO THAT UPON RELEASING OF SAID LOCKING MEANS SAID PISTON PUSHES BY MEANS OF SAID COMPRESSION SPRING SAID FIRST PLUG INTO SAID AMPULE SIMULTANEOUSLY PIERCING BOTH SAID DIAPHRAGMS BY THE POINTED ENDS OF SAID HYPODERMIC NEEDLE IN ORDER TO DISCHARGE THE CONTENT OF SAID AMPULE THROUGH SAID AXIALLY MOVED HYPODERMIC NEEDLE AND SAID AMPULE IS RETAINED VAPOR-PROOF AND STERILE IN SAID METAL CONTAINER.
Claim 2
Dependent Claim 351 words
A HYPODERMIC SYRINGE FOR SELF ADMINISTERING INJECTIONS COMPRISING A FIRST UNIT AND A SECOND UNIT RECEIVING SAID FIRST UNIT, SAID FIRST UNIT COMPRISING A CYLINDRICAL HOUSING OPEN AT ONE END AND HAVING A BOTTOM WALL TO CLOSE THE OTHER END, SAID BOTTOM WALL DEFINING A CENTRAL OPENING, A RELEASE CAP TELESCOPICALLY SURROUNDING SAID CLOSED OTHER END OF SAID CYLINDRICAL HOUSING, A PISTON HAVING A SHAFT EXTENDING THEREFROM AND DISPOSED IN SAID CYLINDRICAL HOUSING ADJACENT SAID BOTTOM WALL AND SAID SHAFT EXTENDING THROUGH SAID CENTRAL OPENING OF SAID BOTTOM WALL, SAID PISTON HAVING A COLLAR AT ITS END REMOTE FROM SAID SHAFT, A COMPRESSION SPRING IN SAID CYLINDRICAL HOUSING AND ENGAGING THE INNER FACE OF SAID BOTTOM WALL AND SAID COLLAR OF SAID PISTON RESPECTIVELY, THEREBY URGING SAID PISTON INTO THE INNERMOSE POSITION IN SAID CYLINDRICAL HOUSING, RELEASABLE LOCKING MEANS COOPERATING WITH SAID SHAFT AND RETAINING SAID PISTON IN ITS WITHDRAWN POSITION AGAINST THE FORCE OF SAID COMPRESSION SPRING, AND SAID SECOND UNIT COMPRISING A CYLINDRICAL METAL CONTAINER FITTINGLY AND IMMOVABLY DISPOSED IN AND AT THE OPEN END OF SAID CYLINDRICAL CONTAINER, AN AMPULE OF PLASTIC MATERIAL IMMOVABLY RECEIVED IN AND AT THE INNER END OF SAID METAL CONTAINER AND DISPOSED ADJACENT SAID PISTON, A FIRST DIAPHRAGM CLOSING ONE END OF SAID AMPULE, A FIRST PLUG DISPOSED AT THE OTHER END OF SAID AMPULE AND AXIALLY DISPLACEABLE IN THE LATTER, SAID PLUG ENGAGING THE END OF SAID PISTON AND BEING ACTUATED BY THE LATTER, A SECOND PLUG SECURED TO AND RETAINED AT THE OUTER END OF SAID METAL CONTAINER, A SECOND DIAPHRAGM DISPOSED IN SAID SECOND PLUG, A HYPODERMIC NEEDLE AXIALLY MOVABLY DISPOSED IN SAID METAL CONTAINER BETWEEN SAID FIRST DIAPHRAGM AND SAID SECOND DIAPHRAGM AND HAVING POINTED ENDS, SO THAT UPON RELEASING OF SAID LOCKING MEANS SAID PISTON PUSHES BY MEANS OF SAID COMPRESSION SPRING SAID FIRST PLUG INTO SAID AMPULE SIMULTANEOUSLY PIERCING BOTH SAID DIAPHRAGMS BY THE POINTED ENDS OF SAID HYPODERMIC NEEDLE IN ORDER TO DISCHARGE THE CONTENT OF SAID AMPULE THROUGH SAID AXIALLY MOVED HYPODERMIC NEEDLE AND SAID AMPULE IS RETAINED VAPOR-PROOF AND STERILE IN SAID METAL CONTAINER.

References Cited (Backward Citations)

US2664086A Cited
US2832339A Cited
US2762370A Cited
US2871856A Cited
DE1081192B Cited
US2866458A Cited
US3066670A Cited
FR1249255A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1968-05-10 1968-11-09 1969-05-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1972-05-10 1972-11-09 1973-05-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1976-05-10 1976-11-09 1977-05-11 $7700.00 Window Closed / Lapsed

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