Linear Peristaltic Pump for Compact Biological Analyzer

The patent inverts the traditional rotary peristaltic pump design by converting rotational motion into linear motion. Instead of rotating rollers that move in a circle, the invention uses a linear reciprocating roller that moves back and forth in a straight line, achieving unidirectional fluid flow while enabling compact arrangement in limited spaces.

The patent transitions from two-dimensional rotary motion to one-dimensional linear motion. The reciprocating roller moves along a linear path rather than following a circular trajectory, fundamentally changing the dimensional nature of the motion to achieve both unidirectional flow and compact footprint.

The patent combines multiple compression functions into a single linear reciprocating pump unit. By integrating the compression mechanism that previously required multiple rotary pumps into one linear device, adequate compression force is achieved while significantly reducing overall system dimensions and allowing more efficient spatial arrangement.

The patent employs dynamic reciprocating motion of the roller to achieve high compression force. The linear back-and-forth movement allows the roller to dynamically compress the flexible tubing with sufficient force, eliminating the need for multiple static or rotary pump units to achieve the same compression effect.