Apparatus and balloon for dosing a liquid medicine

Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...

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604153, A61M 3700

Patent

active

055140963

ABSTRACT:
An apparatus for dosing a liquid medicine. The apparatus includes a balloon having openings through which the medicine is charged and discharged; a housing holding the balloon and having an outlet adjacent to one of the openings; and a delivery assembly extending from the outlet. The balloon is composed of an inner layer, an outer layer covering the inner layer and an impermeable membrane interposed between the inner and outer layers. The inner layer is made of a chemically resistant resin not reactive with the medicine, the outer layer is made of an elastic rubber more contractive than the inner layer when the balloon is inflated with the medicine, and the impermeable membrane prevents any additives in the elastic rubber from migrating into the medicine, even if the additives were not previously removed. The balloon can be manufactured in a shorter time than a conventional balloon and will not cause an allergic reaction or anaphylactic shock inherent in untreated elastic rubbers.

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