Development of Medical Care Assist Bed using Pneumatic Planar Soft Actuator

2002 ◽  
Vol 14 (6) ◽  
pp. 547-556 ◽  
Author(s):  
Toshiro Noritsugu ◽  
◽  
Daisuke Sasaki ◽  
Seij i Matsuo ◽  
Ikuo Kusunoki ◽  
...  
Keyword(s):  
Medical Care ◽  
Pressure Distribution ◽  
Human Body ◽  
Traveling Wave ◽  
Control Method ◽  
Body Position ◽  
The Body ◽  
Soft Actuator ◽  
Inner Pressure ◽  
Fragile Object

Bedridden persons often have a bedsore, which causes pain to the patient. Then, it is important to prevent from a bedsore. In this study, for prevention from a bedsore, a medical care assist bed using a pneumatic planar soft actuator constructed with rubber balls has been developed. This actuator can carry an object by generating a traveling wave by controlling the inner pressure of balls. In addition, owing to the flexibility of the mechanism, this actuator can carry a fragile object without a complicated control method. In this paper, the structure and operational principle of the actuator is described, and then the principle of both the change of bedridden human body position and the adjustment of pressure distribution between the body and the bed is described. Finally, their effects are experimentally investigated. The experimental results show that this bed can adjust the contact pressure with the human body. Therefore, the effective of this bed to prevent from a bedsore is confirmed.

Electric Wheelchair Controlled by Human Body Motion -Classification of Body Motion and Improvement of Control Method-

2010 ◽  
Vol 22 (4) ◽  
pp. 439-446 ◽  
Author(s):  
Sho Yokota ◽  
◽  
Hiroshi Hashimoto ◽  
Yasuhiro Ohyama ◽  
Jinhua She ◽  
...  
Keyword(s):  
Pressure Distribution ◽  
Human Body ◽  
Control Method ◽  
Body Movement ◽  
Single Point ◽  
Movement Pattern ◽  
Body Motion ◽  
Self Organizing Map ◽  
Electric Wheelchair ◽  
Wheelchair Control

This paper classifies human body movements when an electric wheelchair was controlled using a Human Body Motion Interface (HBMI) by a Self-Organizing Map (SOM) and proposes control based on classification results. The Human Body Motion Interface (HBMI) uses body movement following voluntary motion. This study focuses on electric wheelchair control as an application of the HBMI. The viability of the HBMI was confirmed using Center Of Weight (C.O.W.) from pressure distribution information on backrest in the wheelchair to control it. If body movement concentrated on a single point at C.O.W. in pressure distribution, a problem occurred because the system would recognize even different body-movement patterns as the same movement. We call body movement taking the same C.O.W. even if it has a different body-movement pattern movement confusion. We solve the movement confusion problem and enhance wheelchair control, classifying body movement using the SOM and reflecting this classification result to improve wheelchair control. Experimental results showed that movement confusion is solved and wheelchair control improved.

scholarly journals Selected dynamic anthropometrics and body characteristics for posture corrector fit

2020 ◽  
Vol 1 (2) ◽  
pp. 96-103
Author(s):  
Inga DABOLINA ◽  
Jelizaveta Fomina ◽  
Eva Lapkovska ◽  
Liene Silina
Keyword(s):  
Human Body ◽  
Sedentary Lifestyle ◽  
Body Position ◽  
Physical Activities ◽  
The Body ◽  
Body Posture ◽  
Body Measurements ◽  
Postural Changes

Correct body posture is a balanced musculoskeletal body position; however, today many people face severe posture defects, and their body posture may be far from a normal, causing progressive musculoskeletal deformities and pain, as well as affecting the functionality and appearance of the body. Human daily habits, lack of physical activities and overall a sedentary lifestyle cause such phenomena. The research focuses on studies of human body measurements and body characteristics while wearing posture-corrective equipment for the assessment of the effectiveness of different posture correctors (abbreviated as PoC). Four test-persons were selected and scanned using 3D anthropometrical scanner in relaxed stand position wearing five different posture correctors for a prolonged period of time in order to determine the effectiveness and functionality of each PoC. Four distance (linear) human body measurements were gained to quantify postural changes - scapula position depth, upper torso position, shoulder projection height and hip-waist depth. General feedbacks on each subject impression of wearing PoCs were also received. Correction of posture could serve as a preventive or treatment for spine-related problems; though, commercially available correctors could negatively affect wearer’s health due to non-conformity of the design and/or used material. Therefore, PoC selection and wearing procedures should be solved with more personalized and customized approaches.

scholarly journals Surround 3-Dimensional Scanner

2017 ◽  
Vol 8 (2) ◽  
pp. 99-104 ◽  
Author(s):  
Krzysztof Karbowski
Keyword(s):  
Human Body ◽  
Body Position ◽  
Cost Effective ◽  
Body Part ◽  
Medical Application ◽  
The Body ◽  
3 Dimensional ◽  
Human Body Part ◽  
Structured Light Scanner ◽  
Scanning Head

Abstract The paper describes original 3-dimensional structured light scanner used for medical application. Scanner kinematics is similar to the gantry mechanism of computed tomography apparatus. The unique feature of the presented scanner is a glass table for capturing image of a human body part. The scanner can acquire an object through the table. It gives the chance for surround scanning of the human body, using only one scanning head, without changing the body position. It is more cost effective scanner solution than multihead scanner configuration.

Study on Influence of Back Angle on Human Body Pressure Distribution

2013 ◽  
Vol 655-657 ◽  
pp. 2088-2092
Author(s):  
Hao Chen ◽  
Hai Yan Song ◽  
Jian Guo Zhang ◽  
Fang Wang
Keyword(s):  
Pressure Distribution ◽  
Human Body ◽  
Test System ◽  
The Body ◽  
Maximum Pressure ◽  
Comfort Evaluation ◽  
Back Angle ◽  
Body Pressure Distribution ◽  
Statistical Analysis Software ◽  
Office Chair

Through the study of the seat size parameter change on the body pressure distribution effect, the powerful references to comfort design of office chair were explored. By using Canadian XSENSOR X3 PRO V6 test system, human body pressure distribution and subjective comfort evaluation in different back angle of 6 objects were tested. The data were processed by statistical analysis software SPSS 16. Then the change of maximum pressure, average pressure, contact area of seat surface and backrest, as well as the vertical pressure distribution curve with the back angle were obtained. Finally the comfort indicators of daily office chair were determined based on body pressure distribution, and the most comfortable back angle of office chair were also solved. Thereby it can provide reference for those who want to design comfortable daily office chair.

Matrix Solution of Digitized Planar Human Body Dynamics for Biomechanics Laboratory Instruction

1992 ◽  
Author(s):  
David G. Alciatore ◽  
Lawrence D. Abraham ◽  
Ronald E. Barr
Keyword(s):  
Human Body ◽  
Body Position ◽  
Equations Of Motion ◽  
Three Dimensional ◽  
Iterative Solution ◽  
The Body ◽  
Body Motion ◽  
Laboratory Instruction ◽  
Matrix Formulation ◽  
Body Dynamics

Abstract The dynamics of planar human body motion, solved with a non-iterative matrix formulation, is presented. The approach is based on applying Newton-Euler equations of motion to an assumed 15 body segment model resulting in a system of 48 equations. The system of equations was carefully ordered to result in a banded system (bandwidth = 10) which is solved efficiently. The method is more favorable than a traditional iterative solution because it is more easily coded, reaction forces are more easily dealt with, and multiple solutions for a given body position can be readily obtained. The results described are limited to planar body motion but the method is easily extendible to general three-dimensional motion. A computer program was developed to process digitized body point coordinate data and calculate resultant joint forces and moments for each frame of data. This method of human body dynamics analysis was developed to support laboratory instruction for an Engineering Biomechanics course. Athletic activities are captured with a three-dimensional video digitizing system and the data is processed resulting in time histories of force and moment distributions throughout the body during the captured event. Computer software performs the analyses and provides real-time graphical illustrations of the kinematics and dynamics results. The dynamics results for the leg of a runner are presented here as an example of the application of the method.

The Impact of the Human Body Position Changes During Wheelchair Propelling On Motion Resistance Force

2021 ◽  
Author(s):  
Bartosz Wieczorek ◽  
Lukasz Wargula ◽  
Mateusz Kukla ◽  
Dominik Rybarczyk ◽  
Jan Górecki ◽  
...  
Keyword(s):  
Inclination Angle ◽  
Human Body ◽  
Body Position ◽  
Rolling Resistance ◽  
The Body ◽  
Resistance Force ◽  
Centre Of Gravity ◽  
Motion Resistance ◽  
Propulsion Phase ◽  
The Impact

Abstract Purpose - The aim of this research was to analyse the impact of the human body position changes caused by propelling a wheelchair with the pushrim propulsion on the value of motion resistance force. Material and methods - The research was carried out in the group of six persons propelling a wheelchair whose frame was inclined, in respect to the horizontal plain, under the angle of 0°, 7° and 14°. The area of the position variability of the human body centre of gravity and the coefficients of wheelchair rolling resistance have been determined in the research. Results -The results obtained, depending on the wheelchair inclination angle, ranged from 9.82 N to 22.81 N. In addition, it has been determined that the percentage increase in rolling resistance force, with the body position proper for the initial propulsion phase, in relation to the body position for the final propulsion phase, amounted to: 35.6% for the inclination angle of 0°, 43.2% for the inclination angle of 7°, and 48.3% for the inclination angle of 14°. Conclusion - the research done demonstrated the impact of the centre of gravity position change on the change of motion resistance. Thus, the research supplemented knowledge with a new parameter which, like a surface type and wheel type, affects motion resistances.

Correction of Posture Deviations in the Sagittal Plane Using the Pilates Method

2019 ◽  
pp. 3-13
Author(s):  
Alexandru Cîtea ◽  
George-Sebastian Iacob
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Postural Control ◽  
Human Body ◽  
Sagittal Plane ◽  
The Body ◽  
Lower Limbs ◽  
Low Back ◽  
Pilates Method ◽  
The Relationship

Posture is commonly perceived as the relationship between the segments of the human body upright. Certain parts of the body such as the cephalic extremity, neck, torso, upper and lower limbs are involved in the final posture of the body. Musculoskeletal instabilities and reduced postural control lead to the installation of nonstructural posture deviations in all 3 anatomical planes. When we talk about the sagittal plane, it was concluded that there are 4 main types of posture deviation: hyperlordotic posture, kyphotic posture, rectitude and "sway-back" posture.Pilates method has become in the last decade a much more popular formof exercise used in rehabilitation. The Pilates method is frequently prescribed to people with low back pain due to their orientation on the stabilizing muscles of the pelvis. Pilates exercise is thus theorized to help reactivate the muscles and, by doingso, increases lumbar support, reduces pain, and improves body alignment.

Fast Method for the Determination of Residual Solvents in Radiopharmaceutical Products

2017 ◽  
Vol 68 (4) ◽  
pp. 666-670 ◽  
Author(s):  
Mirela Mihon ◽  
Catalin Stelian Tuta ◽  
Alina Catrinel Ion ◽  
Dana Niculae ◽  
Vasile Lavric
Keyword(s):  
Gas Chromatography ◽  
Control Method ◽  
Limit Of Detection ◽  
The Body ◽  
Biologically Active ◽  
Injection Technique ◽  
Fast Method ◽  
Residual Solvent ◽  
Residual Solvents

The aim of this work was the development and validation of a fast analytical method to determine the residual solvents content in radiopharmaceuticals such as: 18F-Fluorodeoxyglucose (18F-FDG), 18F-Fluoroestradiol (18F-FES), 18F-Fluorothymidine (18F-FLT),18F-Fluoromisonidazole (18F-FMISO). Radiopharmaceuticals are radioactive preparations for medical purposes used in nuclear medicine as tracers in diagnostic imaging and treatment of certain diseases. Positron Emission Tomography (PET) is a medical imaging technique that consists in introducing into the body of a small amount of a biologically active chemical compound labelled with a short lived positron-emitting radioisotope (18F, 11C, 68Ga). Residual solvents are critical impurities in radiopharmaceuticals that can affect labelling, stability and physicochemical properties of drugs. Therefore, the determination of these solvents is essential for quality control of radiopharmaceuticals. Validation of the control method for residual solvents by gas chromatography is referred by the European Pharmacopoeia using a special injection technique (head space). The parameters of the method, which comply with International Conference on Harmonization guidelines, are: accuracy, precision, linearity, limit of detection, limit of quantification and robustness. The proposed method (direct gas chromatography injection) proved to be linear, precise, accurate and robust. Good linearity was achieved for all the solvents and correlation coefficients (R2) for each residual solvent were found more than 0.99.

Representation of a Human Body: A Comparison Study between Balinese and Javanese Traditional House

Humaniora ◽  
2020 ◽  
Vol 11 (2) ◽  
pp. 83-90
Author(s):  
Anak Agung Ayu Wulandari ◽  
Ade Ariyani Sari Fajarwati
Keyword(s):  
Comparative Study ◽  
Human Body ◽  
Qualitative Method ◽  
Descriptive Analysis ◽  
The Body ◽  
Comparison Study ◽  
Architectural Drawing ◽  
Study Approach ◽  
The Comparative Study ◽  
Head Area

The research would look further at the representation of the human body in both Balinese and Javanese traditional houses and compared the function and meaning of each part. To achieve the research aim, which was to evaluate and compare the representation of the human body in Javanese and Balinese traditional houses, a qualitative method through literature and descriptive analysis study was conducted. A comparative study approach would be used with an in-depth comparative study. It would revealed not only the similarities but also the differences between both subjects. The research shows that both traditional houses represent the human body in their way. From the architectural drawing top to bottom, both houses show the same structure that is identical to the human body; head at the top, followed by the body, and feet at the bottom. However, the comparative study shows that each area represents a different meaning. The circulation of the house is also different, while the Balinese house is started with feet and continued to body and head area. Simultaneously, the Javanese house is started with the head, then continued to body, and feet area.

scholarly journals Smart Wearable Sensors Based on Triboelectric Nanogenerator for Personal Healthcare Monitoring

Micromachines ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 352
Author(s):  
Ruonan Li ◽  
Xuelian Wei ◽  
Jiahui Xu ◽  
Junhuan Chen ◽  
Bin Li ◽  
...  
Keyword(s):  
Medical Care ◽  
Health Monitoring ◽  
Wearable Sensors ◽  
The Elderly ◽  
The Body ◽  
Assessment System ◽  
Triboelectric Nanogenerator ◽  
Personal Healthcare ◽  
Healthcare Monitoring ◽  
Smart Wearable

Accurate monitoring of motion and sleep states is critical for human health assessment, especially for a healthy life, early diagnosis of diseases, and medical care. In this work, a smart wearable sensor (SWS) based on a dual-channel triboelectric nanogenerator was presented for a real-time health monitoring system. The SWS can be worn on wrists, ankles, shoes, or other parts of the body and cloth, converting mechanical triggers into electrical output. By analyzing these signals, the SWS can precisely and constantly monitor and distinguish various motion states, including stepping, walking, running, and jumping. Based on the SWS, a fall-down alarm system and a sleep quality assessment system were constructed to provide personal healthcare monitoring and alert family members or doctors via communication devices. It is important for the healthy growth of the young and special patient groups, as well as for the health monitoring and medical care of the elderly and recovered patients. This work aimed to broaden the paths for remote biological movement status analysis and provide diversified perspectives for true-time and long-term health monitoring, simultaneously.

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