Filtration device
AssigneeWarsaw Orthopedic, Inc.
InventorWilliam F. McKay
Life of this patent
Estimating the term…
Abstract
A device for separating particulate matter (e.g., cells) from a liquid including a housing defining an elongate chamber disposed between a receiving end and a dispenser end, a plunger slidably inserted within the chamber from the receiving end, an upper disc and a lower disc each independently slidably affixed to the plunger, the lower disc facing the dispenser end and including at least one filter arrangement, and a liquid including particulate matter disposed within the chamber when the upper disc and lower disc are in an aspiration mode. The upper disc is independently slidable with respect to the lower disc to achieve a filtration mode.
Claims9
A method for separating particulate matter from a liquid comprising:
- providing a housing defining an elongate chamber disposed between a receiving end and a dispenser end;
- providing a plunger slidably inserted within the chamber from the receiving end;
- providing an upper disc having a hole slidably receiving the plunger and a lower disc, the lower disc being fixed to an end of the plunger below the upper disc, the lower disc facing the dispenser end and including at least one filter arrangement;
- introducing the liquid into the chamber by sliding the upper and lower discs upwards towards the receiving end, the liquid including particulate matter;
- affixing a cap to the dispensing end;
- and
- separating the liquid from the particulate material by filtering the liquid through the at least one filter arrangement of the lower disc by sliding the lower disc downwards to separate the particulate matter from the liquid in the chamber so as to cause the upper disc to slide toward the receiving end.
A method for separating particulate matter from a liquid comprising:
- providing a filtration device comprising:
- an elongated housing having at least one wall defining a chamber disposed between a receiving end and a dispensing end including an outlet to dispense;
- a plunger slidably inserted within the chamber from the receiving end;
- a first impermeable disc having a hole slidably receiving the plunger, said first impermeable disc being slidably and sealingly moveable along a length of said plunger, and being slidably and sealingly movable along a length of said at least one wall defining said chamber;
- and a second disc including at least one filter, said second disc being fixed to an end of the plunger and located between the first impermeable disc and said dispensing end, said second disc being slidably and sealingly movable along a length of said at least one wall defining said chamber, wherein, the shape of said discs substantially conforms to the shape of said chamber, wherein a liquid including particulate matter is disposed in the chamber;
- and
- sliding the second disc downwards to achieve a filtration mode for separating the particulate matter from the liquid so as to cause the first disc to slide toward the receiving end.
Dependencies are inferred from the claim text.