Improvements in anaesthetic inhalers / [Edward Mompesson Morgan].

  • Morgan, Edward Mompesson.
Date:
1902
Catalogue details

Licence: Public Domain Mark

Credit: Improvements in anaesthetic inhalers / [Edward Mompesson Morgan]. Source: Wellcome Collection.

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    K' 7651 J-tf! A.D. 1901 ' Date of Application, 13th Apr., 1901 Complete Specification Left, 2nd Jan., 1902—Accepted, 20th Feh., 1902 PBO VISIONAL SPECIFICATION. Improvements in Anaesthetic Inhalers. I, Edward Mompesson Morgan, of No, 247 Greene Avenue in tliei Town of Westmount in the- District of Montreal and Province of Quebec, Dominion of Canada, Physician and Surgeon, do hereby declare the nature of this invention to be as follows:-— 5 The object of my invention is to enable the administering of the anaesthetic to be under the perfect control of the physician, both as to the quantity and strength thereof. To this end the invention may be said briefly to comprise an inhaler part proper wherein a series of layers of absorbent material are located, and arranged 1 0 to lie horizontally and one above the other when the inhaler is in use, means for displacing the alternate opposite edges of the absorbent layers, a valve for regu¬ lating the quantity of air inhaled, and a guard extending completely across the bottom oif the inhaler proper to protect the patient’s face. The carrying part or hood is open at both ends the lower end conforming to 15 the features of a patient and the upper end having a pair of brackets upon which rests a plate having the inhaler proper depending therefrom. This hood is divided horizontally and the lower part is adapted to be fitted over the upper part to facilitate the carrying thereof. The plate, above mentioned, is formed with an opening in the middle thereof 20 to the edges of which the open top of my inhaler proper is rigidly connected and a hinged valvular cover closes this opening and is furnished with a finger, curved concentrically of the hinge, whereby the cover can be held open to a variable extent. My improved inhaler proper consists of a rectangular box the bottom whereof 25 which is about flush with the lower end of the upper portion of the hood has an oblong tubular port the open inner end whereof is partially closed by ai strap which constitutes a guard to prevent the liquid anaesthetic falling therethrough. Or the bottom of the inhaler box may be extended across the full length and width of, the upper portion of the hood and be secured to the lower end of the 30 said upper portion instead of toi the lower end of the inhaler box proper. The ends of the box are formed with a series of horizontal slots and the interior is furnished with a series of stops alternating with one another and in line with the slots. These stops may be formed with notches in their ends and be con¬ stituted by a paTr of suitably bent strips. Or they may be made of a single length 35 of wire attached at one end to the top of the inhaler box proper and extended in zig-zag form to the bottom thereof. A bandage is passed through the horizontal slots from the top to bottom of the box to form a series of layers and is finally wrapped around said box, while the middle portion of one side edge of each layer is held from the side of the box by 40 one of the stops thus providing a zig-zag passage between said layers and from the top to the bottom of the box. In practice the draught due to inhalation by the patient is controlled by the valve while the fact of the bottom of the inhaler box being completely and per¬ manently closed except for the slits at each side of the guard strip effectively [Price 8d.J