Design and operation verification of an automated pressure mapping and modulating seat cushion for pressure ulcer prevention

Carrigan, Wei; Nuthi, Pavan; Pande, Charu; Wijesundara, Muthu B. J.; Chung, Chul; Grindle, Garrett G.; Brown, Joshua D.; Gebrosky, Benjamin; Cooper, Rory A.

doi:10.1016/j.medengphy.2019.06.006

Cited by 18 publications

(17 citation statements)

References 25 publications

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“…The authors did a comparison of their prototype with a commercial product. Carrigan et al, 22 present the design of an automated pressure mapping seat cushion for pressure ulcer prevention. The seat cushion is tested and the authors underline that the prototype is comparable to commercial air cell-based seat cushion behaviour.…”

Section: Seat Cushion: Modelling and Designmentioning

confidence: 99%

“…Soft air cells are included in each risk zone delimited by curves. Although this concept has been developed by previous studies, 22 our system presents two important sustainable improvements and advantages: (1) in order to ensure a faster and more efficient control of the whole system, the number of independent valves are reduced from 62 to 4; (2) the location of air cell refers to the risk buttocks region in sitting position. 13…”

Section: Seat Cushion: Modelling and Designmentioning

confidence: 99%

“…The second one, called the exhaust valve , has its inlet port connected to the atmospheric pressure. The whole cushion needs then only a total of eight valves and supply pressures, significantly reducing the cost respect the system developed in Carrigan et al 22…”

Section: Seat Cushion: Modelling and Designmentioning

confidence: 99%

“…The FEM simulation has been done on the half of a single soft bubble air-cell and half plate at the top, which simulates the interaction between an external object and the air cell, as performed by other authors 22,39 (see Figure 4). The inner pressure of the air-cells is set to three specified initial values (6, 12, 18 kPa) and a vertical force of 5 N ( C 1 , C 2 , H 1 , H 2 ) and 10 N ( C 3 , H 3 ) are applied to the top surface of the plate.…”

Section: Air Cell: Design and Fem Analysismentioning

confidence: 99%

“…However, the research on active systems and soft robotics is growing, and many new systems could be developed in the future. An active cushion for PUs prevention is presented in Carrigan et al, 22 and it is used as a reference for the study presented above.…”

Section: Introductionmentioning

confidence: 99%

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Modelling, design and control of a new seat-cushion for pressure ulcers prevention

Mannella

Bellusci

Graziani

et al. 2022

Proc Inst Mech Eng H

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Pressure ulcers are a frequent complication in patients having limited activity and mobility (e.g., elderly people, spinal cord injury patients, people with disabilities, etc.). The aim of this work is the conceptual design, modelling and control of a new seat cushion for pressure ulcers prevention. The whole system (constituted by the seat cushion equipped with a real-time pressure mapping with closed-loop control) is designed to identify the critical points on the human skin, before pressure ulcers creation, and to be able to distribute the contact pressure between the human and cushion avoiding wound creation. The seat cushion is constituted by soft air-cells actuated by air flow. To define the shape and size of the soft air-cells, finite element simulations are carried out, analysing the internal volume reduction with external loads application to reproduce the variable stiffness. The data obtained by finite element analysis are used to simulate inflation and deflation of the soft bubble air-cells. Finally, the control systems of a single air-cell and of the whole cushion are designed and simulated. The novelty of our work consists in the conception of a seat cushion able to recognise higher and lower risk zones of pressure ulcer generation on the human skin and to provide compensation automatically. This work can therefore be considered in line with the sustainable development goals recently launched by the EU Commission.

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Section: Seat Cushion: Modelling and Designmentioning

confidence: 99%

Section: Seat Cushion: Modelling and Designmentioning

confidence: 99%

Section: Seat Cushion: Modelling and Designmentioning

confidence: 99%

Section: Air Cell: Design and Fem Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Modelling, design and control of a new seat-cushion for pressure ulcers prevention

Mannella

Bellusci

Graziani

et al. 2022

Proc Inst Mech Eng H

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Modular Pressure Redistribution Cushion with Proprioceptive Soft–Rigid Hybrid Actuator

Peng,

Wang,

Tian

et al. 2023

Advanced Intelligent Systems

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Pressure ulcers, which can result from prolonged sitting, pose a significant challenge for wheelchair users. Soft robotics has considerable potential in preventing pressure ulcers. However, current soft robotics, constructed from flexible materials, face limitations including insufficient proprioception and controllability. Herein, a vacuum‐powered proprioceptive soft–rigid hybrid actuator (PSHA) module and a modular pressure redistribution cushion (MPRC) developed using this module are introduced. This PSHA module is capable of detecting both position and force. Each module within the MPRC is equipped with onboard control, proprioceptive sensation, and inter‐module communication. The MPRC incorporates a closed‐loop control system, enabling it to actively redistribute pressure, thereby preventing prolonged compression of local soft tissue during periods of inactivity. The proposed PSHA module, as evidenced in its application in pressure redistribution cushions, offers a promising approach for designs intent on reducing the risk of pressure ulcers. This study significantly contributes to the advancement of assistive technology, with the potential to enhance the quality of life for individuals with immobility or limited mobility.

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Design and Control of a Reclining Chair with Soft Pneumatic Cushions

Bellusci

Ferraresi

Muscolo

2022

Mechanisms and Machine Science

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Design and operation verification of an automated pressure mapping and modulating seat cushion for pressure ulcer prevention

Cited by 18 publications

References 25 publications

Modelling, design and control of a new seat-cushion for pressure ulcers prevention

Modelling, design and control of a new seat-cushion for pressure ulcers prevention

Modular Pressure Redistribution Cushion with Proprioceptive Soft–Rigid Hybrid Actuator

Design and Control of a Reclining Chair with Soft Pneumatic Cushions

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