Shielded safety syringe having a retractable needle
Patent 4813426 Issued on March 21, 1989. Estimated Expiration Date: 
November 9, 2007. 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 9, 2007. 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 ReferencesSliding I.V. needle carrier assembly Shielded hypodermic syringe Patent #: 4425120 InventorsAssigneeApplicationNo. 07/118745 filed on 11/09/1987US Classes:600/576, Manually supported collector with rigid intake tube (e.g., a hollow needle, etc.)604/198, Cover or protector for body entering conduit movable axially relative to one another604/232Material reservoir (e.g., cartridge, etc.) removably mounted in syringeExaminersPrimary: Yasko, John D.Attorney, Agent or FirmInternational ClassesA61B 5/15 (20060101)A61M 5/32 (20060101) AbstractA shielded safety syringe comprising a cylindrical, outer protective sleeve, an inner needle carrier movable axially through the sleeve, and a double-ended hypodermic needle supported by the needle carrier and aligned coaxially with respect to the outer sleeve and needle carrier. The needle communicates with an evacuated blood collection tube at the interior of the outer sleeve. A position control button is connected to the needle carrier and slidable through an axial guide channel formed in the outer sleeve for moving the needle carrier between proximal and distal positions within the sleeve. Accordingly, the needle is also moved through the outer sleeve to be relocated from an axially extended position, at which to make a veni puncture through a targeted tissue area, to a retracted position, at which the needle is completely surrounded and shielded by the outer sleeve to permit a safe handling and disposal of the syringe while avoiding an accidental needle strike. Locking detents are formed at opposite ends of the guide channel to receive the position control button, so that the needle maybe reliably retained in either the axially extended or retracted position.Field of SearchHaving cover or protector for body entering conduitUsed as piston actuator after removal from conduit covering or protecting position on syringe And extended therefrom by piston when syringe is used Cover or protector for body entering conduit movable axially relative to one another Removable cover or protector for body inserted conduit | |
