Exoskeletons with pre-programmed gait patterns, though a great help to spinal cord injured patients with paraplegia, exhibit a limitation in their inability to carry out user-intended foot movements. This project aims to overcome this limitation by building an interface to allow the user to control the trajectory of the robotic feet in real time. The interface consists of index and middle fingers simulating foot movements that are translated into movements of the feet of the biped robots in the sagittal plane. The finger movements represent the ankle trajectories and are converted to angular trajectories of robotic feet with 2-degrees of freedom using an inverse kinematics model.
{"title":"Control of Foot Trajectory in Biped Robots","authors":"K. Karunakaran, R. Foulds","doi":"10.1109/NEBEC.2013.70","DOIUrl":"https://doi.org/10.1109/NEBEC.2013.70","url":null,"abstract":"Exoskeletons with pre-programmed gait patterns, though a great help to spinal cord injured patients with paraplegia, exhibit a limitation in their inability to carry out user-intended foot movements. This project aims to overcome this limitation by building an interface to allow the user to control the trajectory of the robotic feet in real time. The interface consists of index and middle fingers simulating foot movements that are translated into movements of the feet of the biped robots in the sagittal plane. The finger movements represent the ankle trajectories and are converted to angular trajectories of robotic feet with 2-degrees of freedom using an inverse kinematics model.","PeriodicalId":153112,"journal":{"name":"2013 39th Annual Northeast Bioengineering Conference","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122925936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kaitlin Abbate, Thomas Franklin, Morgan Rosenberger, E. Chabot, Ying Sun
The purpose of this study is to detect forearm muscle contraction strength through use of electromyographic signals. Using a C coding software program, an algorithm is established to first detect an electromyographic signal and then to determine the strength of contraction of the muscle. A PIC microprocessor and printed circuit board (PCB) are also used to implement this task. Specifically, the amplitude of each contraction is studied to determine a weak, medium, or strong contraction type. This system can be used towards making objects (such as a wheelchair) move with different accelerations based on the strength of contraction of some muscle on the body.
{"title":"Determining Strength of Muscle Contraction Using Electromyogram","authors":"Kaitlin Abbate, Thomas Franklin, Morgan Rosenberger, E. Chabot, Ying Sun","doi":"10.1109/NEBEC.2013.17","DOIUrl":"https://doi.org/10.1109/NEBEC.2013.17","url":null,"abstract":"The purpose of this study is to detect forearm muscle contraction strength through use of electromyographic signals. Using a C coding software program, an algorithm is established to first detect an electromyographic signal and then to determine the strength of contraction of the muscle. A PIC microprocessor and printed circuit board (PCB) are also used to implement this task. Specifically, the amplitude of each contraction is studied to determine a weak, medium, or strong contraction type. This system can be used towards making objects (such as a wheelchair) move with different accelerations based on the strength of contraction of some muscle on the body.","PeriodicalId":153112,"journal":{"name":"2013 39th Annual Northeast Bioengineering Conference","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122027108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
B. Goekbora, C. Pomerantz, N. Premnath, R. Stevenson
The proposed design aims to improve upon the moisture balance and antibacterial efficacy of current burn wound dressings. Commercially available wound dressings do not allow for the control of moisture during the healing process. In this design, we introduced a gradient in cross-linking density, with increasing swelling tendency further from the wound surface, so that wound exudate can be wicked away in a controlled manner. This design is expected to prevent both overhydration (maceration) and drying of the wound surface. In addition, the antibacterial potential of the dressings was improved through the addition of silver and copper ions. Release of these metal ions from these hydrogels was controlled through hydrogel crosslinking density. The combination of silver (Ag+) and copper (Cu2+) is expected to inhibit the growth of a broader range of bacteria at a lower cost than silver alone.
{"title":"A Hydrogel Wound Dressing with Gradient Crosslinking and Silver/Copper Ions for Treatment of Severe Burns","authors":"B. Goekbora, C. Pomerantz, N. Premnath, R. Stevenson","doi":"10.1109/NEBEC.2013.40","DOIUrl":"https://doi.org/10.1109/NEBEC.2013.40","url":null,"abstract":"The proposed design aims to improve upon the moisture balance and antibacterial efficacy of current burn wound dressings. Commercially available wound dressings do not allow for the control of moisture during the healing process. In this design, we introduced a gradient in cross-linking density, with increasing swelling tendency further from the wound surface, so that wound exudate can be wicked away in a controlled manner. This design is expected to prevent both overhydration (maceration) and drying of the wound surface. In addition, the antibacterial potential of the dressings was improved through the addition of silver and copper ions. Release of these metal ions from these hydrogels was controlled through hydrogel crosslinking density. The combination of silver (Ag+) and copper (Cu2+) is expected to inhibit the growth of a broader range of bacteria at a lower cost than silver alone.","PeriodicalId":153112,"journal":{"name":"2013 39th Annual Northeast Bioengineering Conference","volume":"289 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116589176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Brian J. Roscoe, R. Wang, S. Sani, Z. Alamgir, X. Cai, Charles J. Robinson
Possible cardiac linked contributions were found in signals taken from an accelerometer located on a person's head. This could provide insight into perceptual thresholds of translational whole body moves of a seated subject. The signal might create a noise floor that could explain why near-constant acceleration perceptual thresholds are seen in blindfolded and seated subjects (where only vestibular input is available) regardless of displacement or velocity of the move.
{"title":"Periodic Entrainment in Head Accelerometer Signals from Seated Human Subjects","authors":"Brian J. Roscoe, R. Wang, S. Sani, Z. Alamgir, X. Cai, Charles J. Robinson","doi":"10.1109/NEBEC.2013.126","DOIUrl":"https://doi.org/10.1109/NEBEC.2013.126","url":null,"abstract":"Possible cardiac linked contributions were found in signals taken from an accelerometer located on a person's head. This could provide insight into perceptual thresholds of translational whole body moves of a seated subject. The signal might create a noise floor that could explain why near-constant acceleration perceptual thresholds are seen in blindfolded and seated subjects (where only vestibular input is available) regardless of displacement or velocity of the move.","PeriodicalId":153112,"journal":{"name":"2013 39th Annual Northeast Bioengineering Conference","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123995151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dental ceramics are widely used in dentistry. Despite all the advantages they provide for dental treatments, their sintering process is time and energy consuming. Microwave sintering may represent an alternative not only to reduce processing times for practitioners and patients but also improve mechanical properties of the material.
{"title":"Improvement on Dental Ceramics Using Microwave Sintering","authors":"M. Pendola, S. Saha","doi":"10.1109/NEBEC.2013.20","DOIUrl":"https://doi.org/10.1109/NEBEC.2013.20","url":null,"abstract":"Dental ceramics are widely used in dentistry. Despite all the advantages they provide for dental treatments, their sintering process is time and energy consuming. Microwave sintering may represent an alternative not only to reduce processing times for practitioners and patients but also improve mechanical properties of the material.","PeriodicalId":153112,"journal":{"name":"2013 39th Annual Northeast Bioengineering Conference","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114022929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kyoung-Sek Song, Thomas D. Kim, Eugene Lee, Samuel Roh, Richard Kyung
The relation between eccentricity loading and implant diameter and the reaction force versus implant diameter were analyzed. Under distributed loading, the stress was larger at the abutment/fixture interface and in the crestal bone, compared to the stress pattern under vertical loading. The amount of stress at the superstructure was similar regardless of the length, diameter, and platform shape of a fixture. Finite element models were constructed in mandible having single screw-type implant fixture connected to the premolar superstructure; this was done in order to evaluate how the length, diameter, and platform shape of a screw-type fixture influence the stress in the supporting tissue around fixtures.
{"title":"Influence of Eccentric Loading and Size of Implant Fixture on the Stress Distribution in the Implant","authors":"Kyoung-Sek Song, Thomas D. Kim, Eugene Lee, Samuel Roh, Richard Kyung","doi":"10.1109/NEBEC.2013.102","DOIUrl":"https://doi.org/10.1109/NEBEC.2013.102","url":null,"abstract":"The relation between eccentricity loading and implant diameter and the reaction force versus implant diameter were analyzed. Under distributed loading, the stress was larger at the abutment/fixture interface and in the crestal bone, compared to the stress pattern under vertical loading. The amount of stress at the superstructure was similar regardless of the length, diameter, and platform shape of a fixture. Finite element models were constructed in mandible having single screw-type implant fixture connected to the premolar superstructure; this was done in order to evaluate how the length, diameter, and platform shape of a screw-type fixture influence the stress in the supporting tissue around fixtures.","PeriodicalId":153112,"journal":{"name":"2013 39th Annual Northeast Bioengineering Conference","volume":"51 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114024396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A conventional Electrocardiography (ECG) acquisition system uses contact method which requires the electrodes to be in contact with human skin. This study proposes a non-contact sensing platform that can remotely detect the signals in real time. The current sensing system developed in our research was able to detect the ECG signals with an effective distance of 20cm. Digital signal processing algorithms including digital filer, peak identification was developed to decimate the signal noise and compute the period. The heart rate (HR), heart rate variability (HRV), breath frequency can be determined. The performance is compared with conventional ECG system in clinic study. It shows high potential to collect effective information for clinic application.
{"title":"An Innovative Non-invasive ECG Sensor and Comparison Study with Clinic System","authors":"Ye Sun, Xiong Yu, J. Berilla","doi":"10.1109/NEBEC.2013.50","DOIUrl":"https://doi.org/10.1109/NEBEC.2013.50","url":null,"abstract":"A conventional Electrocardiography (ECG) acquisition system uses contact method which requires the electrodes to be in contact with human skin. This study proposes a non-contact sensing platform that can remotely detect the signals in real time. The current sensing system developed in our research was able to detect the ECG signals with an effective distance of 20cm. Digital signal processing algorithms including digital filer, peak identification was developed to decimate the signal noise and compute the period. The heart rate (HR), heart rate variability (HRV), breath frequency can be determined. The performance is compared with conventional ECG system in clinic study. It shows high potential to collect effective information for clinic application.","PeriodicalId":153112,"journal":{"name":"2013 39th Annual Northeast Bioengineering Conference","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126211606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sudden increase in intraluminal pressure is one of the contributing factor in traumatic aortic rupture (TAR) in car crashes. At higher loading rates the response of the vessel may alter significantly due to viscoelasticity and inertia of the tissue. The goal of this study was to theoretically evaluate the significance of these factors in determining the state of stress and strain in aortic wall under high rate pressurization.
{"title":"Theoretical Study of Dynamic Viscoelastic Behaviour of Aorta under Impulsive Internal Pressure","authors":"Mobin Rastgar-Agah, K. Darvish","doi":"10.1109/NEBEC.2013.32","DOIUrl":"https://doi.org/10.1109/NEBEC.2013.32","url":null,"abstract":"Sudden increase in intraluminal pressure is one of the contributing factor in traumatic aortic rupture (TAR) in car crashes. At higher loading rates the response of the vessel may alter significantly due to viscoelasticity and inertia of the tissue. The goal of this study was to theoretically evaluate the significance of these factors in determining the state of stress and strain in aortic wall under high rate pressurization.","PeriodicalId":153112,"journal":{"name":"2013 39th Annual Northeast Bioengineering Conference","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126401867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Substrates micropatterned with cell adhesion proteins have been used to investigate how protein density and geometry affect cell behaviors such as cell migration, growth, and differentiation. Existing technologies are limited in that they typically feature protein micropatterns that are static and unable to change while cells are attached. Here we micropatterned shape memory polymer (SMP) substrates that were capable of transitioning from a stretched state to a contracted state to control the width of patterned lines presented to attached cells. We found that micropattern geometry changed as the SMP substrate transitioned to its unstretched shape. Cells attached to dynamic patterns balled up and contracted their nuclei. The results suggest that micropatterned SMP cell culture substrates can be used to study the temporal aspects of cell mechanobiology.
{"title":"Dynamic Micropattern Geometry atop Shape Memory Polymers","authors":"K. A. Davis, J. H. Henderson","doi":"10.1109/NEBEC.2013.160","DOIUrl":"https://doi.org/10.1109/NEBEC.2013.160","url":null,"abstract":"Substrates micropatterned with cell adhesion proteins have been used to investigate how protein density and geometry affect cell behaviors such as cell migration, growth, and differentiation. Existing technologies are limited in that they typically feature protein micropatterns that are static and unable to change while cells are attached. Here we micropatterned shape memory polymer (SMP) substrates that were capable of transitioning from a stretched state to a contracted state to control the width of patterned lines presented to attached cells. We found that micropattern geometry changed as the SMP substrate transitioned to its unstretched shape. Cells attached to dynamic patterns balled up and contracted their nuclei. The results suggest that micropatterned SMP cell culture substrates can be used to study the temporal aspects of cell mechanobiology.","PeriodicalId":153112,"journal":{"name":"2013 39th Annual Northeast Bioengineering Conference","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130200235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Ahmed, J. Cabello, D. Patel, D. Russo, K. Tseng, G. Facas, B. BuSha
Infants born prior to thirty seven weeks of gestation are referred to as premature. Prematurity is a significant problem in developing countries, where preterm infants make up approximately 25% of all live births. The World Health Organization (WHO) and Engineering World Health (EWH) have both expressed the necessity for a low cost, transportable infant incubation unit that can be used specifically for transit. The incubation unit is a TCNJ legacy project; several improvements were proposed to an existing design. The HVAC system was redesigned and will house the humidity and heating systems. A new humidity system has been added with both measurement and control. A new heating element has been designed using heating coils typically found in household appliances. A test baby model was designed using information about the size and thermal characteristics of a preterm infant so that the safety and efficacy of the design can be assessed. SIMULINK modeling of the incubator and a model of a baby will be used to better understand the thermodynamics of the system during operation. Manufacture, assembly, and testing of this new design will be completed during Spring 2013.
{"title":"Low Cost Transportable Infant Incubator","authors":"A. Ahmed, J. Cabello, D. Patel, D. Russo, K. Tseng, G. Facas, B. BuSha","doi":"10.1109/NEBEC.2013.110","DOIUrl":"https://doi.org/10.1109/NEBEC.2013.110","url":null,"abstract":"Infants born prior to thirty seven weeks of gestation are referred to as premature. Prematurity is a significant problem in developing countries, where preterm infants make up approximately 25% of all live births. The World Health Organization (WHO) and Engineering World Health (EWH) have both expressed the necessity for a low cost, transportable infant incubation unit that can be used specifically for transit. The incubation unit is a TCNJ legacy project; several improvements were proposed to an existing design. The HVAC system was redesigned and will house the humidity and heating systems. A new humidity system has been added with both measurement and control. A new heating element has been designed using heating coils typically found in household appliances. A test baby model was designed using information about the size and thermal characteristics of a preterm infant so that the safety and efficacy of the design can be assessed. SIMULINK modeling of the incubator and a model of a baby will be used to better understand the thermodynamics of the system during operation. Manufacture, assembly, and testing of this new design will be completed during Spring 2013.","PeriodicalId":153112,"journal":{"name":"2013 39th Annual Northeast Bioengineering Conference","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116316712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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