Specification of Walter Blundell : apparatus for applying freezing mixtures to parts of the human body preparatory to surgical operations.

  • Blundell, Walter.
Date:
1855
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Walter Blundell : apparatus for applying freezing mixtures to parts of the human body preparatory to surgical operations. Source: Wellcome Collection.

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    Provisional Specification. A.D. 1854.—N° 1758. 3 Blundell's Improved Apparatus for Surgical Operations. silver there is soldered one end of another short silver pipe, similar in all respects to that before mentioned, and to this last-mentioned pipe one end of a piece of vulcanized india-rubber tubing of smaller diameter than that before mentioned is affixed, and to the other and opposite end of said tubing a small 5 silver cock is securely affixed, said cock being employed for discharging into any convenient receptacle the liquid from the vessel containing the freezing mixture. The mode of using this apparatus is as follows:—Supposing it, for example, to be used by a dentist, the operator opens the large cock and fills the bag with the freezing liquid; he then applies the bag to the tooth to be ] o extracted, and pressing it against the gam at such part, holds it there, and opening the small cock slightly, allows the freezing fluid to flow or circulate through the bag, and thus carry off the heat from the particular part of the gum to which it is applied as fast as it is absorbed by the liquid, and it is this peculiar mode of absorbing the heat continuously which effects the perfect 15 benumbing of the part to which it is applied, and thus constitutes this Invention. It is to be understood that the coldness of the fluid in the bag will depend in a great measure upon the velocity with which it passes through the bag, which may be easily regulated by the operator pressing the tube between his thumb and fingers. The shape and size of the bag will also depend upon 2Q the purpose for which it is required, and must be constructed accordingly. SPECIFICATION in pursuance of the conditions of the Letters Patent, filed by the said Walter Blundell in the Great Seal Patent Office on the 10th February 1855. TO ALL TO WHOM THESE PEESENTS SHALL COME, I, Walter 25 Blundell, of No. 29, New Broad Street, in the City of London, Surgeon, Dentist, send greeting. WHEEEAS Her most Excellent Majesty Queen Victoria, by Her Letters Patent, bearing date the Eleventh day of August, in the year of our Lord One thousand eight hundred and fifty-four, in the eighteenth year of Her reign, SO did, for Herself, Her heirs and successors, give and grant unto me, the said Walter Blundell, Her special licence that I, the said Walter Blundell, my executors, administrators, and assigns, or such others as I, the said Walter Blundell, my executors, administrators, and assigns, should at any time agree with, and no others, from time to time and at all times thereafter during the 35 term therein expressed, should and lawfully might make, use, exercise, and