The number of indications for lumbar injection of air for both therapeutic and diagnostic reasons make the need for a simple technic of the operation apparent. Following is a description of a method that materially facilitates the procedure.
After the lumbar puncture has been performed, the Scannell blood transfusion chamber is attached to the lumbar puncture needle at the middle point of insertion, or the one which is normally used for the salt solution. A Luer adaptor is placed on the opposite side, so that a 10 cc. Luer syringe may be used. A rubber tube is attached to the left point of insertion to drain away the spinal fluid. Over the right outlet, a piece of sterile gauze is attached by means of a rubber band; this is in order to strain the air through a sterile substance.
Scannell blood transfusion chamber.
At any time during the operation, the