Surgery – Controlled release therapeutic device or system – Implanted dynamic device or system
Patent
1986-02-19
1987-10-20
Pellegrino, Stephen C.
Surgery
Controlled release therapeutic device or system
Implanted dynamic device or system
604175, 128736, 119 1, A61M 500
Patent
active
047011807
ABSTRACT:
An animal insert with analog display is provided for use with an anchor inserted behind the animal's ear into a region commonly known as the Kelly triangle. The region is bounded cranially by the posterior border of the conchal cartilage and caudally by the anterior border of the cleido-occipitalis muscle. The anchor comprises an anchor flange positioned against the animal's skin, a sleeve extending into the animal and having internal threads engaging corresponding external threads on the insert, and a healing material and a plurality of barbs for retaining the anchor in the animal. The insert comprises an insert flange positioned adjacent the anchor flange, a tube extending into the animal through the sleeve of the anchor, and one or more capsules or pellets of a dissolving medicant-containing material or a liquefying diagnostic material disposed within a lower end of the tube. A piston within the tube is forced by a piston spring toward the lower end of the tube as the one or more pellets liquefy or dissolve, unreeling a string from a pulley attached to a longitudinal shaft connected to a radial indicator arm visibly located outside of the flange, causing the indicator arm to gather up a reflective sheet from the flange to expose the brightly colored surface thereof, thereby producing a proportionate analog display of the extent of progressive liquefaction or dissolution of the one or more pellets.
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Bielka Robert P.
Hamel Esther V. M.
Kelly L. Thomas
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