Sterile fluid pump diaphragm construction

A fluid pumping cartridge for particular use in delivery of sterile fluid for surgical procedures comprising:

• a cartridge housing adapted for connection to and disconnection from a pump control structure;
• a pump diaphragm within said cartridge housing arranged for pumping sterile fluid therethrough;
• a separate, control diaphragm within said cartridge which is capable of resiliently oscillating and absorbing fluid flow pulses driven by said pump diaphragm in order to produce modulated flow of said sterile fluid from said cartridge
• conduit means for flow communication of said sterile fluid from said pump diaphragm against said control diaphragm;
• said conduit means comprising an aperture through an internal wall formed within said cartridge housing and medially separating a pumping chamber comprising said pumping diaphragm and an accumulator chamber comprising said control diaphragm in which said pump diaphragm and control diaphragm are opposingly oriented within said cartridge housing.

A fluid pumping cartridge for particular use in delivery of sterile fluid for surgical procedures comprising:

• a cartridge housing adapted for connection to and disconnection from a pump control structure;
• a pump diaphragm within said cartridge housing, arranged for pumping sterile fluid therethrough;
• a separate, control diaphragm within said cartridge which is capable of resiliently oscillating and absorbing fluid flow pulses driven by said pump diaphragm in order to produce modulated flow of said sterile fluid from said cartridge;
• fluid dampening conduit means for directing dampening fluid against a first surface of said control diaphragm in opposition to said sterile fluid flow against a second surface of said control diaphragm in order to produce dampening by said control diaphragm of sterile fluid flow pulses imposed thereagainst from said pump diaphragm;
• and a sterile fluid chamber having opposing chamber walls defined by said pump diaphragm and said control diaphragm.

A fluid pumping cartridge for particular use in a single surgical procedure in order to deliver and maintain sterile condition of the pumped fluid, comprising:

• a cartridge housing adapted for connection to and disconnection from a pump control structure;
• a pumping chamber within said cartridge housing, said pump chamber including a pump diaphragm for pumping sterile fluid through the cartridge;
• a dampening chamber formed within said cartridge housing, said dampening chamber comprising a separate control diaphragm capable of resiliently oscillating and absorbing fluid flow pulses produced by said pump diaphragm in order to produce modulated flow of said sterile fluid from said cartridge;
• and
• a sterile fluid chamber having opposing chamber walls defined by said pump diaphragm and said control diaphragm.