Surgery – Reproduction and fertilization techniques
Patent
1998-01-12
1999-06-01
Lacyk, John P.
Surgery
Reproduction and fertilization techniques
A61D 700
Patent
active
059083808
ABSTRACT:
The invention relates to a sterile, disposable, compartmentalized Zavos swim-up column for the swimming-up of spermatozoa, at desired levels of dilution in a media, and a swimming down of spermatozoa into compartments within the column, as well as to a method for the harvesting of those semen samples having particular sperm morphology, motility, progressive motility, speed, sperm concentration, fertilization potential, and a sex ratio. The device comprises a hollow, vertically supported column, having a closed lower end, and an open upper end. A lowermost or first conical member is arranged at the lowermost end of the column, the lowermost conical member having a lowermost periphery in sealing engagement with the bottom of the column. The first conical member has inclined side walls and a truncated uppermost portion defining a peripheral edge which is open within into the column. A second conical member having a lowermost periphery is also attached to the side walls of the column in a sealing manner therebetween. The second conical member also has tapered walls and a truncated uppermost portion defining a peripheral edge which is open to the inside of the column. The area between the inclined walls of each of the conical members and the inner wall of the column define a periconical area which comprises a compartment for collecting sperm prior to harvesting thereof.
REFERENCES:
patent: 3894529 (1975-07-01), Shrimpton
patent: 4759344 (1988-07-01), Wang
patent: 5135865 (1992-08-01), Ranoux
Zavmaboupes-Zavos Panayota N.
Zavos Panayiotis M.
Halgren Don
Lacyk John P.
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