Trap in barrel one handed retracted intervenous catheter device
Patent 5129884 Issued on July 14, 1992. Estimated Expiration Date: 
August 17, 2010. 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.
August 17, 2010. 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 ReferencesCannula insertion set with safety retracting needle Injection devices Safety needle apparatus Patent #: 4834718 InventorApplicationNo. 569089 filed on 08/17/1990US Classes:604/164.08, Having cover or protector for body entering conduit604/195Portion of body entering conduit stored in material receiving syringe reservoirExaminersPrimary: Yasko, John D.International ClassA61M 005/178AbstractAn intervenous catheter device having a needle cannula fixed to a slidable piston. The slidable piston is held within the elongated hollow barrel of said intervenous catheter device by a compressed spring and a latch means. When said latch means is disengaged with said slidable piston fixed to said needle cannula, said slidable piston and said needle cannula are thrust into said elongated hollow barrel of said intervenous catheter device by said spring, said spring further holds said needle cannula fixed to said slidable piston within said elongated hollow barrel and is further prevented from being pushed out of said elongated hollow barrel by a rim in said elongated hollow barrel thus preventing any accidental injection of bacteria, virus or other undesirable material into others. The disengagement of said latch means with said slidable piston is accomplished with only one and the same hand that is used to inject the needle cannula into a body or into a vein inside of said body.Field of SearchPortion of body entering conduit stored in material receiving syringe reservoirRemovable cover or protector for body inserted conduit Body entering conduit axially movable within body piercing conduit while former is disposed in the body Having mechanical means for feeding conduit through piercing conduit Having guard on piercing conduit for protecting body entering conduit Having bag or sheath enclosing body entering conduit Cover or protector for body entering conduit movable axially relative to one another Having means for preventing reuse of device Injector or aspirator syringe supported only by person during use (e.g., hand held hypodermic syringe, douche tube with forced injection, etc.) | |
