Fecal examining device
OwnerMichael J. Hennessyinventor
Life of this patent
Estimating the term…
Abstract
A fecal examining device for use in the float separation of parasite eggs from feces with a screen composed of slots having an effective flow area of at least 40% of the surface area interposed in the liquid to allow ova to pass through the screen to a collecting slide.
Claims14
A fecal examining device to support an ova-collecting slide whereby the slide receives and collects ova upwards through a liquid-fecal material mixture comprising:
- (a) a vial for holding a sample of feces to be examined,
- (b) a tubular extension with an upper edge of the extension constructed to receive the ova-collecting slide wherein a lower portion of the tubular extension is connected to the vial opening by a sealable fit means to sealably connect the parts and expand the internal volume of the device upwardly to the extent of the internal volume of the tubular extension, and
- (c) a screen means immovably affixed across the internal volume of the tubular extension wherein the screen means comprises a plurality of said guards providing an essentially clear vertical flow area upwardly of at least 40% of the screen area.
A method for collecting ova using a fecal examining device comprising:
- (a) placing the fecal sample in the vial for holding a sample of feces to be examined,
- (b) adding to the vial fluid of a specific gravity greater than that of the ova to be collected,
- (c) mixing the feces into a suspension in the fluid,
- (d) snapping a tubular extension onto the top of the vial wherein the tubular extension is equipped with an upper edge of the extension constructed to receiving the ova-collecting slide, wherein a lower portion of the tubular extension is snapped to the vial opening by a sealable fit means to sealably connect the parts and expand the internal volume of the device upwardly to the extent of the internal volume of the tubular extension, wherein a screen means is immovably affixed across the internal volume of the tubular extension, and wherein the screen means comprises a plurality of rail guard providing an essentially clear vertical flow area upwardly of at least 40% of the screen area,
- (e) adding sufficient fluid through the top of the tubular extension to the suspension to bring the liquid level up to a meniscus at the top of the tubular extension,
- (f) placing a collecting slide over the meniscus and allowing the ova, if any, to collect on the under side of the microscope slide, and
- (g) removing the slide and examining the under surface of the slide under a microscope for the presence of ova.
A fecal examining device to support an ova-collecting slide whereby the slide receives and collects ova upwards through a liquid-fecal material mixture comprising:
- (a) a vial capable of standing on its own with its opening upwardly for holding a sample of feces to be examined,
- (b) a tubular extension with an upper edge of the extension constructed to receive the ova-collecting slide wherein a lower portion of the tubular extension is connected to the via opening by a snap sealing fit means to sealably connect the parts and expand the internal volume of the device upwardly to the extent of the internal volume of the tubular extension, and
- (c) a screen means affixed horizontally across the internal volume of the tubular extension near the bottom of the extension, wherein the screen means is at least one horizontal rail guard having a triangular cross-section with one edge directed downwardly and provides an essentially clear vertical flow area upwardly of at least 40 percent of the area.
Dependencies are inferred from the claim text.