| 摘要 |
PROBLEM TO BE SOLVED: To provide a simple and inexpensive method for preventing different type blood transfusion by which misoperation of a patient or blood can be prevented. SOLUTION: A key number is given to the body of a patient requiring blood transfusion. A blood bag is locked by a lock set by a punched card with the key number. Thus the lock can be unlocked by only using the key number given to the patient to enable blood transfusion for the patient. |
