Retractable safety needle
Patent 4676783 Issued on June 30, 1987. Estimated Expiration Date: 
September 3, 2005. 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.
September 3, 2005. 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 3055361 3536073 3572334 3670727 3910272 Outside-the-needle catheter device with needle housing Shielded hypodermic syringe Patent #: 4425120 InventorsAssigneeApplicationNo. 06/771640 filed on 09/03/1985US Classes:604/171, Body entering conduit axially movable within flexible protective sheath facilitating sterile insertion into body duct604/162, Having guard on piercing conduit for protecting body entering conduit604/177, And used as conduit manipulator (e.g., foldable gripper wings, etc.)604/198Cover or protector for body entering conduit movable axially relative to one anotherExaminersPrimary: Rosenbaum, C. FredAssistant: Vinyard, Sherri E. Attorney, Agent or FirmInternational ClassesA61M 25/06 (20060101)A61M 5/32 (20060101) AbstractAn intravenous needle with a sharpened distal end has a proximal end fixed within a first enlarged end of an inner tube. The enlarged end of the inner tube is held tightly within a first end of an outer tube by friction. The needle passes through a constricted opening in the first end of the outer tube. The second end of the inner tube passes through a constricted opening in the second end of the outer tube. The needle is used by gripping soft plastic wings on the outer tube and removing a needle cover from a nipple on the first end of the outer tube. The needle is then inserted in the desired location and the outer tube and a protruding end of the inner tube are taped in place. Fluids are permitted to flow through the inner tube and needle. When use is complete, the needle is removed from the vein, the protruding end of the inner tube is pulled outward, pulling the first end of the inner tube and the needle into the outer tube. The first end of the inner tube tightly wedges within the second end of the outer tube, holding the needle totally within the outer tube. Finally, the retracted used needle assembly is discarded, encased in the outer tube.Field of SearchBody entering conduit axially movable within flexible protective sheath facilitating sterile insertion into body ductAnd used as conduit manipulator (e.g., foldable gripper wings, etc.) Cover or protector for body entering conduit movable axially relative to one another Removable cover or protector for body inserted conduit Having guard on piercing conduit for protecting body entering conduit | |
