Surgery – Respiratory method or device – Ozone or ion generation
Patent
1976-07-12
1978-01-17
Truluck, Dalton L.
Surgery
Respiratory method or device
Ozone or ion generation
128DIG16, 128348, A61M 500
Patent
active
040686590
ABSTRACT:
A disposable assembly and associated method for placing a catheter tube or plastic cannula into the body of a patient, the assembly being initially disposed in a sterile package and comprising a hollow cannulated needle sharpened at one end and comprising a connector in the form of a hub at the trailing end thereof, the connector being joined to an elongated semi-rigid sheath having a longitudinal slit along one location. The flexible cannula of radiopaque silicone rubber, is initially disposed within the semi-rigid sheath with the leading end thereof resting within the hollow of the needle. A stylet telescopically rests within the entire length of the plastic cannula with the exception of the leading tip thereof and is of such dimension as to stiffen the concentrically disposed plastic cannula. An inserter mechanism comprising a laterally projecting handle is connected to the trailing end of the stylet such that the handle thereof extends through the longitudinal slit in the semi-rigid sheath and is exposed for manual manipulation. The trailing end of the semi-rigid slitted sheath is plugged and/or capped to maintain sterility. In use, once the assembly has been removed from the sterile package and venipuncture has been accomplished, the catheter tube or plastic cannula is concurrently advanced into the vein with the stylet through manual manipulation of the inserter handle, so as to preserve the sterilizing of the catheter tube following which the plastic cannula is retained in the vein and, the remainder of the catheter placement assembly other than the plastic cannula is retracted rearwardly and entirely removed from the plastic cannula at the trailing end thereof and discarded. The relationship between the plastic cannula and the inserter precludes reverse displacement of the plastic cannula during insertion thereby obviating any possibility of shearing of the plastic cannula into the vein. Thereafter, a suitable plug receiving female adapter is retrieved from the sterile package and is affixed to the trailing end of the plastic cannula to accommodate fluid flow through the cannula, usually from a syringe or infusion system.
REFERENCES:
patent: 2423762 (1947-07-01), Everett
patent: 3000380 (1961-09-01), Doherty
patent: 3010453 (1961-11-01), Doherty
patent: 3185152 (1965-05-01), Ring
patent: 3220411 (1965-11-01), Czorny
patent: 3370587 (1968-02-01), Vizcarra
patent: 3703174 (1972-11-01), Smith
patent: 3792703 (1974-02-01), Moorehead
Deseret Pharmaceutical Co., Inc.
Foster Lynn G.
Truluck Dalton L.
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