Importance

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Abstract

A system is disclosed for positive identification between a patient and a blood unit to be administered to the patient incorporating a combination lock which positively prevents access to the blood unit unless its code matches that of the patient. An alphabetic code is assigned to the patient and is set into the combination lock at the time the blood unit is removed from the blood bank. Setting of the code is achieved by the technician without necessity of external tools or mechanical skill. The combination lock has several alphabetic coded indicia dials which may be set at any orientation with respect to several locking rings. Once the combination is set, a manual clamping force exerted on the structure serves to lock the indicia rings to the associated locking ring to set the code.

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First Claim