Precision volumetric pump with a bellows hermetic seal

A precision volumetric pump, comprising:

• a bellows capsule that comprises a plurality of individual convolutes, wherein each convolute of the plurality of individual convolutes is joined to at least one other convolute of the plurality of individual convolutes by a metal weld, wherein the bellows capsule is enabled to expand and contract to modulate a first volume of the bellows capsule, wherein the bellows capsule is hermetically sealed relative to a drivetrain housing of a drivetrain system, and wherein the plurality of individual convolutes each comprise a metal, and wherein the individual convolutes comprise a ring shape;
• a pump housing defining a chamber in which the bellows capsule is positioned, wherein the pump housing is hermetically sealed relative to the drivetrain housing via a seal positioned between the pump housing and the drivetrain housing, wherein an inner surface of the pump housing does not contact the bellows capsule when the bellows capsule modulates the first volume, wherein the chamber of the pump housing, a front surface of the drivetrain housing, and the plurality of individual convolutes of the bellows capsule together define a fluid chamber having a second volume, and wherein a sum of the first volume and the second volume remains constant;
• an end plate coupled to a first end of the bellows capsule and coupled to a shaft, wherein the seal positioned between the pump housing and the drivetrain housing is a static seal;
• a drivetrain system having a threaded connection between the motor and the bellows, the drivetrain system comprising:
• a nut positioned within the drivetrain housing and coupled to the bellows capsule via the shaft, the nut being movable in a linear direction in response to actuation of a motor;
• a leadscrew positioned within the nut, the leadscrew comprising threads that engage with threads of an additional shaft coupled to the motor, for translating a rotation of the motor into a linear motion of the nut;
• and
• wherein the pump delivers a predetermined volume per cycle with a precision value of less than 1% for a 2% of full volume dispense, wherein the full volume dispense comprises a range from 1 μl to 5000 μl.