B - Operations – Transporting – 01 – F
Patent
B - Operations, Transporting
01
F
B01F 13/06 (2006.01) A61B 17/56 (2006.01) A61F 2/00 (2006.01)
Patent
CA 2041300
A two-component bone cement mixing system comprises a cartridge mixer having an interior volume containing a first predetermined quantity of a free-flowing, powdery, solid bone cement component under vacuum pressure; an ampoule containing a second predetermined quantity of a liquid bone cement component; a fluid transfer element for fluidically connecting the cartridge mixer and the ampoule for transfer of the liquid bone cement component to the cartridge mixer; and a plug element, receivable within the ampoule, for automatically hermetically sealing the fluid transfer element against passage of a material therethrough upon completion of the transfer of the second predetermined quantity of the liquid bone cement component into the cartridge mixer. The two-component bone cement mixing system allows.in vacuo mixing of liguid monomeric and solid polymeric bone cement components without air being incorporated into the mixture and insures the prevention of air passage into the cartridge mixer during and/or after monomer transfer. In order to ensure transfer of all of the liquid monomer into the cartridge mixer, solely by vacuum pressure, the ratio of the interior volume of the cartridge mixer (Vcm), measured in cubic centimeters, to the volume of the first predetermined quantity of a free-flowing, powdery, solid bone cement component (Vbc), measured in cubic centimeters, should be in the range of Vcm/Vbc of about 1.5 to 3.5.
Blake Cassels & Graydon Llp
Chan Kwan-Ho
LandOfFree
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