Inverse Pneumatic Artificial Muscles for Application in Low‐Cost Ventilators

Mirvakili, Seyed Mohammad; Sim, Douglas; Langer, Robert

doi:10.1002/aisy.202000200

Cited by 6 publications

(2 citation statements)

References 8 publications

(7 reference statements)

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“…The global outbreak of COVID-19 causes severe aftereffects in human respiratory system [1]. Therefore, a tremendous number of ventilators are in high demand [2]. However, high costs and long production time makes it difficult to fit the rising number of patients [3].…”

Section: Introductionmentioning

confidence: 99%

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3D architectured air sensing tubes for a portable mechanical ventilator

Kim¹,

Min²,

Baker³

et al. 2021

Flex. Print. Electron.

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Today, respiratory ventilators are in high demand at the peak of the COVID-19 outbreak. However, there are concerns regarding insufficient supply of ventilators to handle the impending surge due to the high cost, and slow production and deliveries. Thus, the development of a low-cost portable ventilator becomes essential. The mechanical ventilator requires two main components including an active airbag and its venting control system. We developed a reliable active airbag designed with mechanically tunable 3D origami structures. The 3D origami structure based active airbag demonstrates reliable and reconfigurable characteristics. The active airbag’s volume can be tuned by controlling the triangular angles in the 3D origami-folding plates. Moreover, its volumetric ratio before and after compression is around 85%. Also, the rotating behavior of 3D origami tube under the compressive force allows more functionalities in the airbag such as the architectured pressure sensing. The 3D printed origami sensor measures the compressed angle to confirm the accuracy of detected pressure in the ventilator circuit. We achieved accurate delivery of targeted air volume with specific airflow rate by 3D printed reconfigurable origami tubes.

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Section: Introductionmentioning

confidence: 99%

“…The BVM can be easily operated by patients. Thus, the BVM system can be a great candidate for the portable ventilator today [2]. Usually, the manual BVM has been widely used for temporary cardiopulmonary resuscitation in emergency cases [6].…”

Section: Introductionmentioning

confidence: 99%

3D architectured air sensing tubes for a portable mechanical ventilator

Kim¹,

Min²,

Baker³

et al. 2021

Flex. Print. Electron.

View full text Add to dashboard Cite

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Investigating the effect of materials and structures for negative pressure ventilators suitable for pandemic situation

et al. 2021

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The onset of the corona virus disease 2019 (COVID-19) pandemic caused shortages in mechanical ventilators (MVs) essential for the intensive care unit (ICU) in the hospitals. The increasing crisis prompted the investigation of ventilators which is low cost and offers lower health complications. Many researchers are revisiting the use of negative pressure ventilators (NPVs), due to the cost and complications of positive pressure ventilators (PPVs). This paper summarizes the evolution of the MVs, highlighting the limitations of popular positive and negative pressure ventilators and how NPV can be a cost-effective and lower health complication solution. This paper also provides a detailed investigation of the structure and material for the patient enclosure that can be used for a cost-effective NPV system using ANSYS simulations. The simulation results can confirm the selection and also help in developing a low cost while based on readily available materials. This can help the manufacturer to develop low-cost NPV and reduce the pressure on the healthcare system for any pandemic situation similar to COVID-19.

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Parametrically Excited Nonlinear Pneumatic Artificial Muscle Under Hard Excitation: A Theoretical and Experimental Investigation

Kalita

Dwivedy

2023

Int. J. Bifurcation Chaos

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In this work, a single degree of freedom system consisting of a mass and a Pneumatic Artificial Muscle subjected to time-varying pressure inside the muscle is considered. The system is subjected to hard excitation and the governing equation of motion is found to be that of a nonlinear forced and parametrically excited system under super- and sub-harmonic resonance conditions. The solution of the nonlinear governing equation of motion is obtained using the method of multiple scales. The time and frequency response, phase portraits, and basin of attraction are plotted to study the system response along with the stability and bifurcations. Further, the different muscle parameters are evaluated by performing experiments which are further used for numerically evaluating the system response using the theoretically obtained closed form equations. The responses obtained from the experiments are found to be in good agreement with those obtained from the method of multiple scales. With the help of examples, the procedure to obtain the safe operating range of different system parameters is illustrated.

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Inverse Pneumatic Artificial Muscles for Application in Low‐Cost Ventilators

Cited by 6 publications

References 8 publications

3D architectured air sensing tubes for a portable mechanical ventilator

3D architectured air sensing tubes for a portable mechanical ventilator

Investigating the effect of materials and structures for negative pressure ventilators suitable for pandemic situation

Parametrically Excited Nonlinear Pneumatic Artificial Muscle Under Hard Excitation: A Theoretical and Experimental Investigation

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