Coil spring-powered pump with inertial microfluidic chip for size-based isolation and enrichment of biological cells

Microfluidic chips have been widely used for in vitro diagnostics using pretreatment of biological samples; however, biologists and clinical researchers have difficulties using them in resource-limited settings. Sample injection systems for microfluidic chips are bulky, expensive, electricity-powere...

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Veröffentlicht in:Analyst (London) 2022-12, Vol.147 (24), p.571-5717
Hauptverfasser: Gwak, Hogyeong, Ha, Seong Min, Song, Jae-Woo, Hyun, Kyung-A, Jung, Hyo-Il
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container_issue 24
container_start_page 571
container_title Analyst (London)
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creator Gwak, Hogyeong
Ha, Seong Min
Song, Jae-Woo
Hyun, Kyung-A
Jung, Hyo-Il
description Microfluidic chips have been widely used for in vitro diagnostics using pretreatment of biological samples; however, biologists and clinical researchers have difficulties using them in resource-limited settings. Sample injection systems for microfluidic chips are bulky, expensive, electricity-powered, and complex. A coiled spring-powered device, which can be used to isolate variously sized cells with high efficiency continuously and passively, was developed for portable, low-cost, electricity-free, and simple sample injection. The flow driving power was provided by releasing the compression spring in the mechanical syringe driver with a one-click action. In general, a syringe pump generates a stable passive flow rate. However, the syringe pumps are large in size and expensive because they have many functions such as infusion/withdrawal flow injection and the use of syringes of various sizes, allowing them to be applied in a variety of applications performed in the laboratory. In addition, it is not suitable for portable devices because of the considerable amount of electric power required. To overcome these drawbacks, we developed a device prototype that sorts different-sized particles and separates rare tumor cells or blood cells from blood with high efficiency. The performance of the coiled spring-powered device was evaluated and found to be comparable with that of syringe pump-powered devices. In situations where trained personnel cannot handle microfluidic chips for isolating circulating biomarkers (CTCs, WBCs, or plasma) from blood samples, the coiled spring-powered device can provide diagnostic tools, especially in resource-limited countries. Coil spring-powered device for circulating biomarker isolation.
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source Royal Society of Chemistry Journals Archive (1841-2007); Royal Society Of Chemistry Journals 2008-; Alma/SFX Local Collection
subjects Biological properties
Biomarkers
Blood cells
Blood circulation
Compression springs
Electricity distribution
Flow velocity
Microfluidics
Portable equipment
Syringes
title Coil spring-powered pump with inertial microfluidic chip for size-based isolation and enrichment of biological cells
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