An improved inhaler for administering anaesthetics / [Joseph Lobjois].

  • Lobjois, Joseph.
Date:
1904
Catalogue details

Licence: Public Domain Mark

Credit: An improved inhaler for administering anaesthetics / [Joseph Lobjois]. Source: Wellcome Collection.

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    JST 21,500 A.D. 1903 Date of Application, 6th Oct., 1903 Complete Specification Left, 6th July, 1904—Accepted, 11th Aug., 1904 \ PROVISIONAL SPECIFICATION. An Improved Inhaler for Administering Anaesthetics. I, Joseph Lobjois, of 35 Alfred Place, Bedford Square, in the County of London, Merchant, do hereby declare the nature of this invention to be as follows:— This invention for an improved inhaler for administering anaesthetics has 5 for its object to provide an inhaler into which the anaesthetic can be readily introduced either in just sufficient quantity to induce narcosis or for prolonged anaesthesia, and economically and successfully administered therefrom togetlier with the necessary amount of air required by the patient; and comprises a tube or hollow angle piece provided with an opening for the introduction of a bulb or 10 tube containing the anaesthetic, a stopper arranged to close said opening and hold the bulb in position, an eccentric or other device mounted in the angle piece for breaking off the lower end of the bulb or tube to release the anaesthetic and controlled by a lever, an air inlet slot adapted to be closed by the said lever as it is moved to break the bulb and opened by moving the lever in the reverse 15 direction, a face piece fixed to one end of the angle piece and adapted to make a hermetic connection between the angle piece and the respiratory organs of the patient, a gauze cage containing absorbent material detachably affixed to the other end of the angle piece and an india-rubber bag connected to the cage. In one way of carrying out this invention, a celluloid face piece with a £0 pneumatic pad is employed and is screwed on to one end of the metal angle piece. The other arm of the angle piec£ receives the tube or bulb through an inlet or mouth piece formed at the angle as a continuation of said arm. A cap adapted to fit the mouth piece is formed hollow to receive the upper end of a glass bulb or tube of chloride of ethyl for instance, the cap and tube being 25 then plugged into the angle piece. Adjacent to the lower end of the inserted glass tube or bulb the lever is mounted by means of which the lower end of the tube can be easily broken off allowing the anaesthetic to fall on the absorbent material contained in the cage which is fixed by a bayonet joint to the lower end of the arm and directly below the inserted tube or bulb. The air inlet qO °Pening is closed or regulated by a suitable slide connected with the lever. A small gauze cup is inserted in the arm above the cage to catch the pieces of broken glass to prevent them falling into the absorbent material. The india- rubber bag is connected to the cage mount and encloses the cage. When the apparatus is used in cases of prolonged anaesthesia, the anaesthetic 35 can be poured in from a large tube through the mouth of the angle piece with¬ out removing the face piece from the patient’s face. In use the bulb of ethyl chloride or the like having been introduced, when applying the face piece the patient blows a little into the bag, the operator then actuates the lever closing the air slot, breaking at the same time the point £0 of the bulb. Should it be necessary to admit air the lever is reversed to again open the slot. Dated this 6th day of October, 1903. 45 [Price WHEATLEY & MACKENZIE, 40 Chancery Lane, London, W.C. Agents.