Centerless pump

A pump comprising:

• a centerless rim;
• a first roller guide shaped to roll along the centerless rim such that as the first roller guide is rotated, friction between the first roller guide and the centerless rim causes a corresponding rotation of the centerless rim;
• a second roller guide shaped to roll along the centerless rim;
• a plurality of peristaltic rollers coupled to the centerless rim;
• a tube housing disposed proximate the plurality of peristaltic rollers;
• and
• a tube disposed between the tube housing and the peristaltic rollers such that as the centerless rim is rotated, the peristaltic rollers compress the tube against the tube housing to create negative pressure within the tube.

A system comprising:

• a peristaltic pump comprising:
• a centerless rim;
• a first roller guide shaped to roll along the centerless rim such that as the first roller guide is rotated, friction between the first roller guide and the centerless rim causes a corresponding rotation of the centerless rim;
• a motor coupled to the first roller guide to rotationally drive the first roller guide;
• a second roller guide shaped to roll along the centerless rim;
• a plurality of peristaltic rollers coupled to the centerless rim;
• a tube housing disposed proximate the plurality of peristaltic rollers;
• and
• a tube disposed between the tube housing and the peristaltic rollers such that as the centerless rim is rotated, the peristaltic rollers compress the tube against the tube housing to create negative pressure within the tube;
• and
• a reservoir of material coupled to the tube such that the negative pressure within the tube draws material from the reservoir into the tube.