Injection device having a stabilizing sight which actuates a safety valve for the needle
Patent 5034003 Issued on July 23, 1991. Estimated Expiration Date: 
November 17, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 17, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3538916 3790048 Self-injecting hypodermic syringe device Self-injecting hypodermic syringe device Intramuscular injection device suitable for insulin injections Patent #: 4333459 InventorApplicationNo. 437805 filed on 11/17/1989US Classes:604/117, Having structure for controlling depth of insertion of body piercer604/131, Treating material forced into or out of body by self-acting fluid pressure, motor-driven, or mechanical energy storing means (e.g., pressure infusion or aspiration, etc.)604/155With threaded drive meansExaminersPrimary: Pellegrino, Stephen C.Assistant: Rafa, Michael Attorney, Agent or FirmForeign Patent References
International ClassA61M 005/00Foreign Application Priority Data1988-11-21 FRAbstractAn injection device comprising a support stock that supports a syringe having a plunger and a needle. The plunger is movable in an axial direction to force liquid from the syringe through the needle. A safety valve prevents flow of liquid from the syringe to the needle. A stabilizing sight is provided, for application against skin during an injection. The stabilizing sight is mounted on the device for movement relative to the device such that when the device is pressed against the skin the needle moves from a retracted position relative to the stabilizing sight to an advanced position relative to the stabilizing sight to penetrate the skin. The stabilizing sight is interconnected with the safety valve in such a way that when the needle is in that advanced position the safety valve is moved to an open position and when the needle is in that retracted position the safety valve is in a closed position.Field of SearchHaving structure for controlling depth of insertion of body piercerTreating material forced into or out of body by self-acting fluid pressure, motor-driven, or mechanical energy storing means (e.g., pressure infusion or aspiration, etc.) Material impelled by spring Material impelled by nonreciprocating piston driven by motor With threaded drive means Conduit forced into body by self-acting fluid pressure, motor-driven, or mechanical energy storing means Conduit impelled by spring Having cover or protector for body entering conduit Having means for metering material flow to or from body Including means for controlling piston stroke length By rotatable means (e.g., micrometer, etc.) Injector components pivoted relative to each other to move piston Piston moved by screw or rack Screw actuated Intermittent grip-type actuator | |
