CHAD: Compact Hand-Assistive Device for enhancement of function in hand impairments

Alnajjar, Fady; Umari, Hassan; Ahmed, Waleed; Gochoo, Munkhjargal; Vogan, Alistair A.; Al-Jumaily, Adel; Mohamad, Peer; Shimoda, Shingo

doi:10.1016/j.robot.2021.103784

Cited by 13 publications

(5 citation statements)

References 33 publications

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“…The mechanical actuators based on ball screws, electronic, hydraulic, and pneumatic can be used in the patient's lifting. We found a higher solution in the patient's lifting mechanism based on the worm gear mechanism according to the values reported by Alnajjar, F., et al [26]. This mechanism, while locking for a moment, provides high safety conditions in maintaining the patient's position while the amount of torque required by 66% is negligible as compared to the lead screw mechanism.…”

Section: Discussionsupporting

confidence: 68%

Design of patient lifting device based on the use of a worm gears mechanism in the protection of the caregiver

Najafabadi

2022

Preprint

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Subject: Using an assistive device for lifting and moving patients from bed is increasingly becoming a widespread demand. Purpose: The focus of most of the studies is on robotics and powered assistive devices to lift the patient. We have focused on the development of an assistive lifting system based on the manual lift and using the worm gear mechanism, which has not been studied before. The features of this device are low cost and high efficiency in using hand force as the patient lifts. Materials and methods: Conceptual design of this assistive device and analysis of the worm gear mechanism with the help of SolidWorks software. We studied the selective effect of the ratio of the teeth of worm and worm gear in the device's operation lift system. Results: A comparison of lead screw and worm gear was performed. Using a worm gear lift can show a reduced torque of up to 66% compared to a traditional lead screw lift. This indicates the use of less caregiver force to lift the patient. Conclusions: Low cost and high efficiency are the features of this mobility assistive device. Developing this device can be used at home because of the simplicity of the patient's lifting system and displacement.

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Section: Discussionsupporting

confidence: 68%

Design of patient lifting device based on the use of a worm gears mechanism in the protection of the caregiver

Najafabadi

2022

Preprint

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“…Complex fields, such as membrane technology and space technology, that incorporate 3D Printing with the addition of antibacterial materials to provide highpurity tools and devices promote the use of 3D Printing and its increasing potential and reliability for such fields in the future. Moreover, adopting antimicrobial material through 3D Printing technology opens the doors for a wide range of applications, especially the medical sector, such as producing assistive devices [97,98]. In addition, due to the COVID-19 pandemic crisis, the antimicrobial material can be used to fight the spread of the virus of the possible contaminated buttons instead of replacing the exist system [99].…”

Section: Gaps Challenges Opportunities and Future Trendsmentioning

confidence: 99%

Embracing Additive Manufacturing Technology through Fused Filament Fabrication for Antimicrobial with Enhanced Formulated Materials

2021

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Antimicrobial materials produced by 3D Printing technology are very beneficial, especially for biomedical applications. Antimicrobial surfaces specifically with enhanced antibacterial property have been prepared using several quaternary salt-based agents, such as quaternary ammonium salts and metallic nanoparticles (NPs), such as copper and zinc, which are incorporated into a polymeric matrix mainly through copolymerization grafting and ionic exchange. This review compared different materials for their effectiveness in providing antimicrobial properties on surfaces. This study will help researchers choose the most suitable method of developing antimicrobial surfaces with the highest efficiency, which can be applied to develop products compatible with 3D Printing Technology.

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“…To mimic the principles involved, multiple scholars have used motor-driven bowden wires or wires with a certain degree of stiffness as artificial tendons to guide finger movements. [84][85][86][87][88][89][90][91][92] Thin gloves are made from 3D printed parts, fabric, or polymer materials, most designed to be very compact with good abrasion resistance (Figure 2(a) and (b)). [93][94][95] Tang et al invented a tendon-driven hand-functional rehabilitation exoskeleton glove.…”

Section: Motor-driven Hand Rehabilitation Glovesmentioning

confidence: 99%

Research progress and development trend of flexible hand rehabilitation gloves

Tang,

Qi,

Xiao

et al. 2024

Proceedings of the Institution of Mechanical Engineers, Part C:

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The flexible hand rehabilitation glove is proposed to solve the problems of long rehabilitation training time for patients and high workload for doctors, and to make the treatment more effective. With the advances in robotics, robotic-assisted therapy has developed rapidly and has become an essential complement to conventional treatment. To understand flexible hand rehabilitation glove devices, with the different construction types of actuators and drive methods as the mainline, the corresponding study of these structures as the auxiliary lines. The characteristics and the current state of research have been discussed. A brief introduction to manufacturing actuators and rehabilitation systems is also given. Through the analysis of hand rehabilitation gloves, some current advantages and disadvantages are summarized, and future directions and functional diversification are envisaged. Certain feasible research suggestions have been proposed for future development regarding structure, functional diversity, and a combination of driving methods. These include that there will be more combinations of pneumatic and motor driven, combining the advantages of both methods to overcome the disadvantages of each. The structural design will be more in line with anatomy and ergonomics, make it more esthetically pleasing. More innovative controls methods will be adopted to achieve more complex rehabilitation functions.

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CHAD: Compact Hand-Assistive Device for enhancement of function in hand impairments

Cited by 13 publications

References 33 publications

Design of patient lifting device based on the use of a worm gears mechanism in the protection of the caregiver

Design of patient lifting device based on the use of a worm gears mechanism in the protection of the caregiver

Embracing Additive Manufacturing Technology through Fused Filament Fabrication for Antimicrobial with Enhanced Formulated Materials

Research progress and development trend of flexible hand rehabilitation gloves

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