Surgery – Truss – Perineal
Patent
1979-12-26
1982-12-21
Yasko, John D.
Surgery
Truss
Perineal
128215, A61N 512
Patent
active
043643760
ABSTRACT:
A radiation protective device for use in the injection of a bolus of radioactive material into a blood vessel is described. A bolus retainer is used having a bolus chamber sized to retain a desired bolus size. The chamber extends between front and rear ends of the bolus retainer which fits within a radiation shield. The front end is adapted to be connected to a hypodermic needle. The rear end is adapted for connection to a first syringe sized to precisely draw in the desired bolus size and a flushing syringe to advance the bolus into a blood vessel through the hypodermic needle. The bolus retainer has a valve located near its rear end to retain the bolus in the chamber when the flushing syringe is inserted to replace the first syringe. An improved technique for administering a radioactive bolus is described with substantially less radiation exposure and improved control and speed over the bolus injection.
REFERENCES:
patent: 1830453 (1931-11-01), Wassmer
patent: 1930929 (1933-10-01), Eisenberg
patent: 2390246 (1945-12-01), Folkman
patent: 3957033 (1976-05-01), Winchell et al.
patent: 4073288 (1978-02-01), Chapman
patent: 4241728 (1980-12-01), Mirell
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