Abstract: The present invention discloses method and apparatus for regulating optimum flow of semen and separating motile sperms.

Abstract: The present invention discloses method and apparatus for regulating optimum flow of semen and separating motile sperms.

Abstract: A multi-chamber module for use in the insemination of oocytes comprises a first chamber (36) for holding a fluid medium, a second chamber (54) for receiving semen, and a third chamber (52) into which the fluid medium is arranged to flow from the first chamber (36) and from which that fluid medium passes into the second chamber (54), thereby to permit sperm to move against the fluid flow and pass by capillary flow from the second chamber (54) into the third chamber (52) where the insemination takes place. The capillary flow is established in radial passages (51) between the confronting surfaces of cup-shaped containers (24) and 40). A waste chamber (38) surrounds the second chamber (54).

Abstract: A multi-chamber module (10) for preparing sperm for assisted reproductive techniques comprises a first chamber (40) for holding a fluid medium, a second chamber (52) for receiving semen, and a third, harvesting chamber (50) into which the fluid medium flows from the first chamber (40) and from which that fluid medium passes into the second chamber (52), thereby to permit sperm to move against the fluid flow and pass from the second chamber (52) into the third chamber (50) from which they are harvested. A flow-restricting barrier composed of a stack of ribbed plates (44) defining radial passages therebetween is positioned between the second chamber (52) and the third chamber (50).

Abstract: A device (12) for separating motile sperm from a sperm-containing sample of semen comprises a tubular conduit (14) with a constrictor (20) therein. The constrictor is dimensioned to establish capillary flow of fluid therethrough. The sample is deposited in the larger cross-section upstream end (16) of the device, together with a fluid medium which entrains the semen through the constriction. The motile sperm, having passed through the constriction, swim against the flow and collect in a harvesting zone at the distal end of the conduit, from where they can be aspirated. Non-motile sperm are flushed from the device.