Methods and apparatus for preparing and delivering bone cement

Details Methods and apparatus for preparing and delivering bone cement Methods and apparatus for preparing and delivering bone cement

1995-06-07

1996-08-13

Chan, Christina Y.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including aperture

525265, 525308, 525309, 2221456, 2225412, A61M 5145

Patent

active

055454607

ABSTRACT:
Methods and apparatus are set forth for preparing and delivering bone cement from a powdered polymer component and a liquid monomer component by simultaneously injecting the powdered and liquid components, stored in separate component chambers, into an evacuated mixing chamber under the effect of the vacuum; by uniformly mixing the components in the mixing chamber (to thoroughly wet the powder); and by delivering the cement formed by the polymerization process, as needed in an operative setting, utilizing a single ready to use device. The uniform mix is achieved by simultaneously subjecting the contents of the component chambers to the effects of the mixing chamber's vacuum via separate one way nozzles, interconnecting the component chambers to the mixing chamber, which cause the powder to be broadcast and liquid to be sprayed into the mixing chamber. The nozzles are designed and oriented in a predetermined manner (depending on the type and quantity of the constituent bone cement components being mixed), to cause the components to interact at a preselected distance within the mixing chamber, to assure uniform powder saturation and a thorough mix which yields a homogeneous reaction product.

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