Retractable safety needles
Patent 4781692 Issued on November 1, 1988. Estimated Expiration Date: 
March 27, 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.
March 27, 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 References 3055361 3536073 3572334 3670727 3769975 3906946 3910272 Outside-the-needle catheter device with needle housing Intravenous infusion assembly Shielded hypodermic syringe Patent #: 4425120 InventorsAssigneeApplicationNo. 07/030986 filed on 03/27/1987US Classes:604/164.08, Having cover or protector for body entering conduit604/171, Body entering conduit axially movable within flexible protective sheath facilitating sterile insertion into body duct604/198Cover or protector for body entering conduit movable axially relative to one anotherExaminersPrimary: Pellegrino, Stephen C.Attorney, Agent or FirmInternational ClassesA61M 25/06 (20060101)A61M 5/32 (20060101) AbstractA flexible plastic catheter extends from a distal end of a rigid plastic housing. An elastomeric seal at the distal end of the housing tightly fits within the housing and grips in its bore a stylet. The stylet has a sharp distal end and an enlarged proximal end which receives a distal end of a plastic tube within the housing. The stylet is slideable within the elastic seal. In an extended position, the stylet distal end extends beyond a distal end of the catheter and the proximal end abuts the elastomeric seal. In a retracted position, the elastomeric seal grips the catheter near its distal end and the proximal end abuts a constriction in the proximal end of the housing. In that retracted position, the tubing, the stylet and the catheter form a fluid flow path.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 Having bag or sheath enclosing body entering conduit | |
