. 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. Fig. 17.—Apparatus for rapid massive infiltration anesthesia. with air-pump (Matas). Charging the cylinder size as cannot readily be penetrated in effective quantities by theweak infiltrating fluid. The above method while simple, effective,and often quickly executed, with suitable instruments, such as theMatas infiltrator (Figs. 17 and 18), is not to be re
. 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. Fig. 17.—Apparatus for rapid massive infiltration anesthesia. with air-pump (Matas). Charging the cylinder size as cannot readily be penetrated in effective quantities by theweak infiltrating fluid. The above method while simple, effective,and often quickly executed, with suitable instruments, such as theMatas infiltrator (Figs. 17 and 18), is not to be recommended whenregional methods or vein anesthesia can be Fig. iS.—Cylinder charged and inverted. The pumping outfit is detached when theapparatus is in operation (Matas). Conditions may, however, arise in which, through lack of facili-ties or lack of technic, vein anesthesia cannot be carried out, andamputation or other extensive operation on the peripheral part is PRINCIPLES OF TECHNIC 177 necessary, and yet, owing to unhealthy conditions of the tissues,nephritis, diabetes, etc., particularly when complicated by cardiacor pulmonary disease, it is desirable to reduce the number of incisionsto a minimum; in such conditions, when the field of operation is in theregion of large nerves, a combined method of procedure may beresorted to by first thoroughly edematizing the entire thickness of thelimb; the large nerve-trunks can then be sought for as the operationprogresses and blocked by an intraneural injection, slightly proximalto the field by slightly stronger solutions than that used for the in-filtration, when they can be then safely divide
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