Passive delivery system diluents mixing and delivery

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Passive delivery system diluents mixing and delivery
Engineering Village
Publication number: US20050277894

Application number: 866434

Unstandardized application number: 10866434

Patent authority: US

Kind: A1 - Utility Patent Application

Title: Passive delivery system diluents mixing and delivery

Inventors: Westbye, Lars Tommy (US) ; Dowds, Philip (US)

Assignee: SAFETY SYRINGES, INC.

Publication date: 12/15/2005

Publication year: 2005

Filing date: 06/10/2004

Abstract: A syringe system for the administration of lyophilized drugs includes a syringe barrel and a stopper and a needled guard each coupled with the syringe barrel. A reconstitution plunger is removably coupled with the stopper. A diluent is withdrawn from the syringe into a vial containing a lyophilized drug, and the diluent and drug are mixed to form a therapeutic agent. The reconstitution plunger is then replaced by an administration plunger. The length of the reconstitution plunger is greater than the length of the administration plunger in order to prevent activation of the needle guard during reconstitution. Alternatively, a single plunger system may be used in which the plunger can transition from an extended length during reconstitution to a shortened length during administration. During administration, a radial element of the plunger contacts latch members of the needle guard, whereupon the shield advances to an extended position covering the needle.

Document type: US Application

IPC Code: A61M5/32 SECTION A HUMAN NECESSITIES
MEDICAL OR VETERINARY SCIENCE; HYGIENE
DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY introducing media into or onto the bodies of animals ; means for inserting tampons ; devices for administering food or medicines orally ; containers for collecting, storing or administering blood or medical fluids ; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY surgery ; chemical aspects of surgical articles ; magnetotherapy using magnetic elements placed within the body ; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR 4,5
Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm rests tube connectors, tube couplings, valves or branch units, specially adapted for medical use ; containers specially adapted for medical or pharmaceutical purposes 5
Syringes 5
Needles; Details of needles pertaining to their connection with syringe or hub infusion needles ; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles 2,5

US Classification: 604/198 SURGERY
MEANS FOR INTRODUCING OR REMOVING MATERIAL FROM BODY FOR THERAPEUTIC PURPOSES (E.G., MEDICATING, IRRIGATING, ASPIRATING, ETC.)
Treating material introduced into or removed from body orifice, or inserted or removed subcutaneously other than by diffusing through skin
Material introduced or removed through conduit, holder, or implantable reservoir inserted in body
Means moved by person to inject or remove fluent material to or from body inserted conduit, holder, or reservoir
Injector or aspirator syringe supported only by person during use (e.g., hand held hypodermic syringe, douche tube with forced injection, etc.)
Having cover or protector for body entering conduit
Cover or protector for body entering conduit movable axially relative to one another

Database: US Patents

Compilation and indexing terms, ? 2006 LexisNexis Univentio B.V.

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