. Local and regional anesthesia : with chapters on spinal, epidural, paravertebral, and parasacral analgesia, and on other applications of local and regional anesthesia to the surgery of the eye, ear, nose and throat, and to dental practice. A 240.—Needles, awls, and wrench for injection syringe, designed by Dr. GuidoAt the left is a considerably enlarged reproduction of the new needle, showing thedetails of construction as follows: 1, The hollow needle, either of seamless steel, pure nickel,gold, or iridio-platinum; 2, body of soft metal for firmly tightening the needle upon theorifice of the
. Local and regional anesthesia : with chapters on spinal, epidural, paravertebral, and parasacral analgesia, and on other applications of local and regional anesthesia to the surgery of the eye, ear, nose and throat, and to dental practice. A 240.—Needles, awls, and wrench for injection syringe, designed by Dr. GuidoAt the left is a considerably enlarged reproduction of the new needle, showing thedetails of construction as follows: 1, The hollow needle, either of seamless steel, pure nickel,gold, or iridio-platinum; 2, body of soft metal for firmly tightening the needle upon theorifice of the syringe; 3, conical shell of hard metal, open below, from which the soft metalcone protrudes. This arrangement remedies the deficiencies of the old styles of needlesin which the unprotected soft metal cone could not stand much use, became flattenedeasily, and jammed in the hub so firmly that both hub and needle had to be replaced, whichwas rather expensive if gold or iridio-platinum needles were used. The new needles areattached to the syringe absolutely tightly by inserting the needle in one of the hubs (b or r)and screwing it firmly on the orifice of the syringe. In order to enable practitioners withsensitive fingers easily to m
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanesthe, bookyear1914
