Peristaltic Pump Flow
Peristaltic Pump Flow - Related Videos
04:21
Controlled Infusion of Radiopharmaceutical Agent Using a Peristaltic Pump
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2025
Source: Léa Rubira1, Hélène Sturer1, Louise Combette1, Sandra Santini1, Stéphane Renaud1, Cyril Fersing1,21Nuclear medicine department, Institut régional du Cancer de Montpellier (ICM), Univ Montpellier, 2IBMM, Univ Montpellier, CNRS, ENSCMThis video demonstrates the safe, controlled infusion of a radiopharmaceutical using a peristaltic pump with a dual-line cassette system. The setup includes connecting saline and infusion lines, positioning the shielded vial, and initiating simultaneous...
01:30
ATP Driven Pumps III: V-type Pumps
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2023
V-type pumps are ATP-driven pumps found in the vacuolar membranes of plants, yeast, endosomal and lysosomal membranes of animal cells, plasma membranes of a few specialized eukaryotic cells, and some prokaryotes. They are also known as the V1Vo-ATPase, that couple ATP hydrolysis to transport protons against a concentration gradient. The peripheral or cytosolic V1 domain with eight subunits is involved in ATP hydrolysis. The integral or transmembrane V0 domain containing at least five subunits...
01:34
ATP Driven Pumps II: P-type Pumps
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2023
The P-type pumps are a large family of integral membrane transporter ATPases. They are divided into five major types based on substrate specificity, from I to V. A typical P-type pump has three cytosolic domains: nucleotide-binding (N), phosphorylation (P), and activator (A) domains. These domains are connected to the membrane-spanning helices by short amino acid segments. ATP hydrolysis and covalent phosphoenzyme intermediate formation are crucial parts of the catalytic cycle. At the highly...
07:34
A Cost-effective and Reliable Method to Predict Mechanical Stress in Single-use and Standard Pumps
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Cited by 4 •
2015
Shear stress investigations on an oil-water emulsion system result in drop breakup over the experimental time. To count drop sizes in pumping processes, the suitability of inline endoscopy was successfully demonstrated in this protocol.
01:13
Pumped Concrete
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2024
Concrete in large quantities can be pumped across long distances for placing in inaccessible sites. This system comprises a hopper that receives concrete from a mixer, a pump to propel the concrete, and pipelines that facilitate its delivery. For direct-acting pumps, the concrete enters the pump via the inlet valve under the action of gravity and suction created by the movement of the piston. This concrete is then forced into the pipeline and out through the outlet valve by the forward movement...
FAQs
Fluid propulsion depends on a moving pressure zone rather than a single push at one location. As rollers or coordinated smooth-muscle contractions compress successive sections, pressure behind the compressed region advances the contents; release then allows the tube to reopen for continued transport. This traveling sequence explains how flow can remain directional while the pumping action progresses along the tube.
The flexible tube temporarily changes shape under compression and returns after the compressing force passes. This design separates the fluid from rollers and other mechanical parts, reducing direct contact between the pumped material and the actuator. That separation is especially relevant when maintaining sterility or handling fluids whose composition or condition should be preserved.
Rotational motion and muscle coordination provide the timing needed for repeated compression and release. In an engineered pump, rotating rollers create successive compression sites; in the gastrointestinal tract, rhythmic smooth-muscle activity creates a comparable traveling action. The same principle transports fluid or contents, but biological contractions also contribute to mixing food as it moves through the tract.
Peristaltic pump flow differs from systems that place valves or moving mechanical components directly in the fluid path. Here, the pumping action occurs through the tube wall, so the fluid encounters the tube rather than the rollers or actuator. This arrangement supports controlled delivery and helps limit contamination or mechanical exposure, which is valuable for sensitive biological materials.
An operating sequence begins with fluid inside a flexible tube, followed by compression of one tube region and then adjacent regions. Rotating rollers can supply this progression in a device, while release behind the moving compression zone permits continued passage. The practical result is a controllable transport cycle that moves contents without requiring valves within the fluid stream.
Laboratory and medical systems apply this approach when fluids need controlled delivery while remaining separated from the pumping hardware. Supported examples include cell cultures, nutrients, blood, and other sensitive fluids. Because the fluid contacts the tube rather than the rollers or actuator, the setup can help maintain sterility and reduce exposure to components that could disturb the material.
In the gastrointestinal tract, sequential smooth-muscle contractions move and mix food rather than merely transporting it forward. The rhythmic pattern creates changing pressure along the tract, advancing contents through successive regions. This biological example shows that peristaltic transport can combine propulsion with mixing, making the mechanism relevant to both movement and processing of material in living organisms.