Portable Midget Kinet-o-Meter machine used to administer dental anesthesia consists of four wheel stand with a pole with an adjustable swivel chart stand support attached, four cylinder yokes and a set of three flow meter panels are mounted to top of pole; gas cylinder yokes are arranged in sets of…
Portable Midget Kinet-o-Meter machine used to administer dental anesthesia consists of four wheel stand with a pole with an adjustable swivel chart stand support attached, four cylinder yokes and a set of three flow meter panels are mounted to top of pole; gas cylinder yokes are arranged in sets of two with each yoke having a corresponding round knob; two knobs are marked O2 and the other two are marked N2O; set of three flow meter panels with glass covers marked in white font: cyclopropane with yellow background, middle is Nitrous oxide with dark blue background, oxygen with green background; without tanks.
paper: yellow, blue, green, orange
Stamped onto a round metal plate behind the flow meter panel: "MIDGET KINET-O-METER // HIDBRINK DIVISION // THE OHIO CHEMICAL & MFG. CO. // MINNEAPOLIS, MINN.''; "MADE IN U. S. A. // PATENTS 1,412,866 // 1,500,615 1,802,601 1,1989,366 // 2,073,372 2,085,155". Below the oxygen flow meter panel and around the cylidrical pipe that comes out of it there is a yellowing paper band with the following printed on it: "WARNING; this equipm[illeg.] use only by // or under the super[illeg.] cian or dentist // Read instructions caref[illeg.] so[illeg.]ecome thoroughly // fam[illeg] with proper method [illeg] operation // Mfd. by THE OHIO CHEMICAL & MFG. CO."; stamped on the metal bar below the flow meter panel: K11050
Cyclopropane is an anaesthetic when inhaled. In modern anaesthetic practice, it has been superseded by other agents, due to its extreme reactivity under normal conditions: when the gas is mixed with oxygen, there is a significant risk of explosion. Cyclopropane had no commercial application until Henderson and Lucas discovered its anaesthetic properties in 1929; industrial production had begun by 1936. This meant induction of anaesthesia by inhalation of cyclopropane and oxygen was rapid and not unpleasant. However at the conclusion of prolonged anaesthesia patients could suffer a sudden decrease in blood pressure, potentially leading to cardiac dysrhythmia; a reaction known as "cyclopropane shock".For this reason, as well as its high cost and its explosive nature, it was latterly used only for the induction of anaesthesia, and has not been available for clinical use since the mid 1980s. Cylinders and flow meters were coloured orange.
Cyclopropane, also called trimethylene, explosive, colourless gas used in medicine since 1934 as a general anesthetic. Cyclopropane is nonirritating to mucous membranes and does not depress respiration. Induction of and emergence from cyclopropane anesthesia are usually rapid and smooth. A mixture of about 5 to 20 percent cyclopropane in oxygen is administered by inhalation. Because of the flammability and expense of cyclopropane, it is usually used in a closed (rebreathing) system, in which an absorbent chemical, such as soda lime, removes exhaled carbon dioxide, and the anesthetic is recirculated. The chemical formula is C3H6.