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Title: Drug injection device
Claims: What is claimed is: 1. A drug injection device for insertion into an intravenous feeding tube comprising: a hollow-doughnut shaped casing having an outer wall and an inner wall and first and second faces, said casing forming a chamber which decreases in thickness from the inner wall to the outer wall, an inlet nipple provided on the first face of the casing and an outlet nipple formed on the second face of the casing, said inlet and outlet nipples being in unobstructed communication one with the other through a conduit formed by the inner wall, self-sealing rubber-like material filling the chamber between the inner and outer walls of said casing and a radially aligned window in the outer and inner walls of said device. 2. In a drug injection device for connection into an intravenous feeding tube, a two-part casing, each of said parts having an inner tubular portion and an outer dish-shaped portion surrounding the inner tubular portion, said inner tubular portion and said outer dish-shaped portion providing an annular space therebetween, means for fastening said two-part casing into a unitary assembly, said outer dish-shaped portions being in contact with each other when said two parts are fastened together a body of self-sealing rubber-like material disposed in said annular recesses in said two parts, said inner tubular portions being in contact and in registration with each other when said two parts are fastened together to provide a flow passage extending through the casing, the outer ends of said inner tubular portions being adapted to be connected into the intravenous feeding tube, said inner tubular portions having at least one opening therein which is covered by the body, said dish-shaped portions having at least one window therein in general alignment with the opening in the tubular portions whereby said window and said opening in combination with the body serve as an injection site. 3. A device as in claim 2 wherein a plurality of circumferentially spaced openings are provided in the tubular portions and which are covered by said body and wherein said dish-shaped portions are provided with a plurality of windows in general alignment with the openings in the tubular portions. 4. A device as in claim 3 wherein said openings in the tubular portions are spaced in such a manner so that wall portions of the tubular portions are immediately opposite each of the openings. Other info: Inventors: Lundquist, Ingemar H. (Oakland, CA, US) Application Number: 538371 Filing Date: 1975-01-03 Publication_date: 1976-11-09 Assignee: Valleylab, Inc. (Boulder, CO) Primary Class(es): 604/86 138/103, 285/93 Other Classes: US Patent Ref:
Other Refs: Primary Examiner: Truluck, Dalton L. Assistant Examiner: Attorney: Flehr, Hohbach, Test, Albritton & Herbert |
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