Patent ID: 8623641

Claim:
An apparatus for washing biological material, comprising: an outer sleeve including: a base member having an open end, and an opposed closed end; and an extension member having open, opposed first and second ends, wherein the first end is configured to detachably connect to the open end of the base member and the second end is configured to receive the biological material; and an inner sleeve detachably and slidably positioned within the outer sleeve through the open second end of the extension member, the inner sleeve including: a first port for receiving and dispensing washing liquid; a second port defining a liquid flow path between an interior of the inner sleeve and an interior of the outer sleeve; and a filter disposed in the second port, the filter being sandwiched between a wire mesh member and support members and allowing passage of washing liquid but not passage of the biological material therethrough; wherein a chamber, formed between the filter and the closed end of the outer sleeve, is configured to permit flow of washing liquid via the filter while retaining the biological material therein.