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1. WO2022164918 - PERISTALTIC PUMP WITH REDUCED SPRING FORCE

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Publication Number WO/2022/164918
Publication Date 04.08.2022
International Application No. PCT/US2022/013923
International Filing Date 26.01.2022
IPC
A61M 5/142 2006.1
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
5Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm rests
14Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
142Pressure infusion, e.g. using pumps
CPC
A61M 5/14212
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
5Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
14Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
142Pressure infusion, e.g. using pumps
14212Pumping with an aspiration and an expulsion action
A61M 5/14228
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
5Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
14Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
142Pressure infusion, e.g. using pumps
14212Pumping with an aspiration and an expulsion action
14228with linear peristaltic action, i.e. comprising at least three pressurising members or a helical member
F04B 43/12
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
43Machines, pumps, or pumping installations having flexible working members
12having peristaltic action
F04B 53/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
53Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
Applicants
  • CAREFUSION 303, INC. [US]/[US]
Inventors
  • CAI, Frank
  • ZHANG, Lun
  • SHEVGOOR, Siddarth
  • CARROLL, Derek Alan
Agents
  • HALES, M., Todd
Priority Data
63/142,91828.01.2021US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) PERISTALTIC PUMP WITH REDUCED SPRING FORCE
(FR) POMPE PÉRISTALTIQUE À FORCE DE RAPPEL RÉDUITE
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Abstract
(EN) Peristaltic pumps are described herein. In certain embodiments, a peristaltic pump includes a plunger, a camshaft, and a first biasing member. The plunger is movable to selectively engage a pumping volume of a tubing segment. The camshaft includes a first plunger cam lobe. The first plunger cam lobe is configured to move the plunger between an engaged position in contact with the pumping volume and a disengaged position spaced apart from the pumping volume. The first biasing member is configured to urge the plunger toward the tubing segment to maintain contact with the tubing segment in the engaged position.
(FR) L'invention concerne des pompes péristaltiques. Dans certains modes de réalisation, une pompe péristaltique comprend un piston, un arbre à cames et un premier élément de sollicitation. Le piston est mobile pour entrer sélectivement en prise avec un volume de pompage d'un segment de tube. L'arbre à cames comprend un premier lobe de came de piston. Le premier lobe de came de piston est conçu pour déplacer le piston entre une position engagée en contact avec le volume de pompage et une position désengagée espacée du volume de pompage. Le premier élément de sollicitation est conçu pour pousser le piston vers le segment de tube pour maintenir le contact avec le segment de tube dans la position engagée.
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