Patent ID: 7306361

Claim:
A bone cement mixing and delivery system for delivering bone cement to a patient, said system comprising: a container defining a chamber for receiving at least two separate components of the bone cement, said chamber having a first cross-sectional area; a mixing device disposed in said chamber for mixing the at least two separate components of the bone cement to form a uniform bone cement mixture during a mixing phase; a delivery device defining a cement flow path in fluid communication with said chamber to convey the bone cement mixture from said chamber to the patient, said cement flow path having a second cross-sectional area smaller than said first cross-sectional area; a first transfer head positioned and dimensioned to advance through said chamber in a transfer phase and urge the bone cement mixture from said chamber to said cement flow path; a second transfer head positioned and dimensioned to advance through said cement flow path in a delivery phase and urge the bone cement mixture from said cement flow path to the patient; and a transfer mechanism operatively coupled to said container and including a single drive member for actuating both of said transfer heads, said transfer mechanism further including first and second advancement mechanisms for transferring displacement of said drive member to said transfer heads so that when said drive member is displaced, said first advancement mechanism advances said first transfer head through said chamber to a stop position in the transfer phase and, automatically thereafter, said second advancement mechanism advances said second transfer head through said cement flow path in the delivery phase.