US 12,492,693 B2
Self calibrating peristaltic pump with reduced fluid pulses
Sergey Aleksandrovich Dryga, Rio Rancho, NM (US)
Assigned to Q BIOTECH CORP., Rio Rancho, NM (US)
Filed by Q BIOTECH CORP., Rio Rancho, NM (US)
Filed on Dec. 5, 2023, as Appl. No. 18/529,989.
Claims priority of provisional application 63/436,087, filed on Dec. 29, 2022.
Prior Publication US 2024/0218867 A1, Jul. 4, 2024
Int. Cl. F04B 43/12 (2006.01)
CPC F04B 43/1223 (2013.01) 15 Claims
OG exemplary drawing
 
1. A system comprising:
an anvil operable to support a flexible conduit having a first cavity and a second cavity;
a first piston operable to pump a fluid through the first cavity by repeatedly moving through a first sequence that includes a first cavity filling phase and a first cavity emptying phase;
a second piston operable to pump the fluid through the second cavity by repeatedly moving through a second sequence that includes a second cavity full phase, a second cavity emptying phase that pushes the fluid into the first cavity, a second cavity empty phase that prevents the fluid from flowing into the second cavity, and a second cavity filling phase;
a third piston operable to pump the fluid through a third cavity of the flexible conduit by moving through a third sequence that includes a third cavity emptying phase that pushes the fluid into the first cavity via the second cavity, a third cavity empty phase that prevents the fluid from flowing into the third cavity, a third cavity filling phase, and a third cavity full phase; and
a fourth piston operable to pump the fluid through a fourth cavity of the flexible conduit by moving through a fourth sequence that includes a fourth cavity empty phase that prevents the fluid from flowing into the fourth cavity, a fourth cavity filling phase, a fourth cavity full phase, and fourth cavity emptying phase that pushes the fluid into the second cavity via the third cavity,
wherein:
the first piston and the second piston are operable to compress the flexible conduit by pressing the flexible conduit against the anvil;
the first sequence is a two phase sequence; and
the fluid is pushed into the first cavity during the third cavity emptying phase in response to the fourth piston pressing the fourth cavity closed during the third cavity emptying phase.