DEVICE FOR CARRYING OUT REGIONAL CHEMOTHERAPY OF MAXILLOFACIAL MALIGNANT TUMORS Russian patent published in 1996 - IPC

FIELD: medical engineering. SUBSTANCE: device has unit for supplying medicinal preparations with catheter, unit for recording arterial blood pressure and newly introduced mixing chamber, dropper for anticoagulant to be injected and three three-way cocks, the first of which is mounted between the unit for supplying medicinal preparations, catheter and mixing chamber and its third canal is open into the atmosphere. The third three-way cock is connected to the dropper and pressure recording unit through its second and third canals. The pressure recording unit as membrane-and-rheostat pressure gage is included into an alternating current measurement bridge arm which diagonal is connected to a two- stage negative feedback amplifier which output is connected to a recorder unit through a rectifier. EFFECT: prevented traumatic vascular and tissue lesions; separated and sequential administration of drugs. 3 dwg