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The apparatus here described has these essential features:
There is automatic infallible control of the passage of whole blood from donor to recipient. This is exercised by two valves acting solely under the force of gravity.
Only one small 2 c.c. syringe, which is never changed during the whole procedure, is required.
All the more or less complicated maneuvers common to other apparatus and methods, such as continuous washing and changing of syringes, sprinkling the syringe with ether, switching plates, opening or closing stopcocks, and clamping rubber tubings are eliminated. The surgeon can do the most satisfactory transfusion all alone. All he has to do is to insert one needle in the vein of the donor and the other in the vein of the recipient, and push back and forth the plunger of the syringe. The passage of the blood from donor to recipient is automatically controlled.
The whole apparatus
Soresi AL. A NEW INSTRUMENT FOR TRANSFUSION OF WHOLE BLOOD. JAMA. 1925;84(8):591–592. doi:10.1001/jama.1925.26620340003011a
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