Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1988-03-01
1989-04-11
Pellegrino, Stephen C.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
6048911, 128DIG12, A61M 500
Patent
active
048202738
ABSTRACT:
A flexible rubber bladder is disposed between a concave surface of a molded plastic base and a mirror image surface of a perforated molded plastic barrier, all enveloped by a molded plastic cover sealed to the base and defining a large volume cavity filled with inert gas under pressure. Injection of medication through a septum in the base fills a reservoir defined by the bladder and concave base surface and compresses the gas as the bladder moves to and against the barrier surface whereby the pressure exerted on the bladder forces medication through a metering outlet in the base and through an attached catheter to the infusion site. The free end of the catheter may be connected to a plastic protective cage for accumulating medication as droplets to dispense medication in bolus quantities.
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"A Portable Slow Infusion Capsule", B. M. Wright, The Journal of Physiology, Mar. 1965, vol. 177 (Cambridge University Press), pp. 5P & 6P.
"A Methodical Design Study of Miniature Perfusion Devices for Chemotherapy of Cancer of the Head and Neck", P. D. W. Soden, Masters Thesis, Manchester College of Science and Technology, Oct. 1965, pp. 65 and 66 and FIGS. 13, 15, 23 and 30.
Eaton Corporation
Pellegrino Stephen C.
Vande Zande L. G.
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