Dispensing device
November 27, 2011. 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 ReferencesDose metering plunger devices for use with syringes Infusion pump Dispenser Injection device Cartridge-holder assembly for medication dispensing unit Method and device for injection Disposable syringe Dosage unit for dosing a number of measured quantities of a liquid, such as an insulin preparation, from a container, preferably a cartridge Injection device which can be cocked only in the zero position Syringe with dose metering device InventorApplicationNo. 773610 filed on 11/27/1991US Classes:604/207, Having means for metering material flow to or from body604/208, Including means for controlling piston stroke length604/211, By rotatable means (e.g., micrometer, etc.)604/218With piston or plunger for expelling material from body or injector reservoirExaminersPrimary: Rosenbaum, C. FredAssistant: Polutta, Mark O. Attorney, Agent or FirmInternational ClassA61M 005/00Foreign Application Priority Data1990-03-29 GBAbstractA dispensing device has a shell (11) which may be connected to a container (14) for a fluid to be dispensed, such as an injectable pharmaceutical compound. The device has a fixed first threaded member (21) and a second threaded member (22) surrounding the first member, the first and second members each having equi-spaced threaded segments (27 and 29) with non-threaded segments (28) therebetween whereby the second member will be wound axially when rotated about the first member but may be positioned for axial sliding movement with respect to the first member. A plunger (23) is slidably mounted within the first member (21) and has a portion (33) engageable with the threads of the second member. A dose setting sleeve (53) surrounds the second member and has threads (54) engaged with the device shell, the sleeve being coupled to the second member for rotation therewith. A dose is set by winding the second member (22) away from a fixed stop (25) until the sleeve (53) indicates the required does amount, whereafter the second member (22) is slid axially back to the fixed stop (25), the plunger (23) being thrust forwardly thereby to expel fluid from the container.Field of SearchInjector or aspirator syringe supported only by person during use (e.g., hand held hypodermic syringe, douche tube with forced injection, etc.)With piston or plunger for expelling material from body or injector reservoir Having means for metering material flow to or from body Including means for controlling piston stroke length By rachet and pawl By detent By rotatable means (e.g., micrometer, etc.) Piston moved by screw or rack Material reservoir (e.g., cartridge, etc.) removably mounted in syringe Multidose type Structure of material reservoir replaceably held in injector | |
