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The operation of this apparatus is simple All parts. are sterilized and the solutions made up in exactly the same manner as for any other method of intravenous administration.
The apparatus consists of two cylindrical glass jars F and F′, each of 500 c.c. capacity. A rubber stopper fits accurately into the top of each jar and is perforated by two pieces of glass tubing, K and L, tubes K and K′ reaching to the bottom of the jars, and L and L′ extending only through the stoppers. By means of L and L′ the air-pressure in the jars is increased or diminished. Tubes K and K′ are connected by short pieces of rubber tubing N and N′ with the three-way glass stop-cock C. About three feet of small caliber rubber tubing connects stop-cock C with the injection needle. Glass tube R is inserted about 2 inches from the needle
DAKIN WB. AN APPARATUS FOR THE INTRAVENOUS INJECTION OF SALVARSAN WITH SALT SOLUTION PRECEDING AND FOLLOWING. JAMA. 1912;LVIII(2):94–95. doi:10.1001/jama.1912.04260010096007
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