Surgery – Blood drawn and replaced or treated and returned to body – Constituent removed from blood and remainder returned to body
Patent
1983-03-29
1986-09-23
Lesmes, George F.
Surgery
Blood drawn and replaced or treated and returned to body
Constituent removed from blood and remainder returned to body
128395, 128DIG3, 128 1R, 422 44, A61M 103
Patent
active
046133224
ABSTRACT:
A method and system are disclosed for externally treating human blood, with the objective of reducing the functioning lymphocyte population in the blood system of a human subject. According to the method, blood is withdrawn from the subject and passed through an ultraviolet radiation field in the presence of a dissolved photoactive agent capable of forming photo-adducts with lymphocytic-DNA, mobile hormonal hormonal receptors or antigen sites to thereby effect covalent bonding between the photoactive agent and the same, thereby inhibiting the metabolic processes of the lymphocytes or complexing them; and thereupon returning the irradiated blood to the subject. The withdrawn blood may be formed into an extracorporeal stream and flowed through a treatment station whereat the irradiation is effected, as for example by exposure to UV radiation; and such flow process may be conducted on a continuous basis. If desired, the blood to be treated may be separated to provide a blood fraction rich in lymphocytes and low in any blood component which absorbs UV radiation, as for example by continuous centrifuging which fraction is then irradiated with UV radiation in the presence of a dissolved photoactive chemical agent.
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Lesmes George F.
Swisher Nancy A. B.
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