MUMBAI, India, Sept. 26 -- Intellectual Property India has published a patent application (202411019297 A) filed by Suman Kumar, New Delhi, on March 15, 2024, for 'frozen cell sperm lift.'
Inventor(s) include Suman Kumar.
The application for the patent was published on Sept. 26, under issue no. 39/2025.
According to the abstract released by the Intellectual Property India: "This invention is a system and method to separate the most suitable human sperm for all assisted reproductive technology. The use of this invention results in the elimination of factors that result in poor outcomes or compromised quality of sperm. The ultimate aim of this invention is to provide the best stock of sperm for assisted reproductive technology. This invention has been designed with virgin-grade plastic crystal. This invention is squircle in shape, which gives the benefit of both a circle and a square. Squircle shape can hold more fluid than a circle. And do not trap fluid in corners like a square. The invention has a lid that serves three purposes; a) it covers the upper compartment from contamination or falling small particles to the upper compartment, b) its tiny holes maintain the pressure of the upper chamber, and c) its silicon bar prevents the backflow of sperm. This invention has two compartments (upper and lower) separated by a microporous membrane with a pore size of 10 microns. In the lower compartment, semen is injected through an inlet and tunnel. In the upper compartment, one to two mL of washing media is placed. The ultimate result is the collection of best quality sperm in the upper compartment. The invention works on the principle of positive rheotaxis to separate human sperm. Human sperm have the property of positive rheotaxis. Hence, human sperms are capable of swimming against the flow of liquid. This invention also uses the swimming property of human sperm. This invention does not use centrifugal force or any chemical (silane-coated colloidal silica) for sperm separation. Simply by using the inherent property of positive rheotaxis and swimming ability the sperm to cross the microporous membrane and lift to the upper chamber. This invention takes less time, minimum human or mechanical interference, and gives the best output for all assisted reproductive technology procedures."
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