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Biomedical Engineering and Bioengineering Commons™
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Articles 31 - 60 of 530
Full-Text Articles in Biomedical Engineering and Bioengineering
Hypoxic Incubation Chamber, Simone Lisette Helfrich, Makenzie Nicole Jones
Hypoxic Incubation Chamber, Simone Lisette Helfrich, Makenzie Nicole Jones
Master's Theses
This paper describes the design, manufacturing, and testing of a novel controllable hypoxic incubator with fully functional oxygen gas control and temperature control in a humid environment. On the current market, a majority of the few hypoxic incubators use pre-mixed gas that does not offer precise control over gas concentration. The objective for this project was to create a chamber that allows the user to set the O2 concentration to varying set points of % O2 while maintaining the chamber at a constant body temperature, CO2 level, humidity, and sterility. To start the project, multiple concepts were developed for the …
Functionality Of The Gracilis Collateral Is Impaired Following Arteriogenesis And Cell Transplantation, Ada A. Tadeo
Functionality Of The Gracilis Collateral Is Impaired Following Arteriogenesis And Cell Transplantation, Ada A. Tadeo
Biomedical Engineering
Peripheral Arterial Disease involves narrowed arteries, reducing blood flow to limbs. Increasing blood flow to those extremities is possible by redirecting the blood to flow through natural bypasses (i.e. collateral arteries), which can enlarge via arteriogenesis to maintain blood supply once the prominent arteries have become occluded. This study aims to investigate how arteriogenesis affects collateral function, if myoblast transplantation can stimulate collateral growth, and how that in turn may affect collateral function. Femoral artery ligation was performed to mimic the blockage that occurs in patients with ischemic diseases on lean mice and mice with diet induced obesity (DIO). A …
Abbott Cardiac Electrophysiology Wet Lab Project, Melissa Kurani, Fiona Lynn
Abbott Cardiac Electrophysiology Wet Lab Project, Melissa Kurani, Fiona Lynn
Biomedical Engineering: Graduate Reports and Projects
Cardiac mapping systems provide electrophysiologists with pertinent information about ablation treatment plans for patients who suffer from cardiac arrhythmias. This thesis describes the process of designing a functional wet lab that integrates with Abbott’s EnSite Precision 3D Mapping System, with the purpose of providing Cal Poly students and faculty with an opportunity to have a hands-on learning experience with cardiac mapping. This project encompassed a thorough literature review of cardiology, electrophysiology, and in vitro lab systems, followed by the design, manufacturing, and evaluation of a functional and anatomically representative wet lab. This is a continuation of previous master’s projects that …
Potassium And Sodium Sensing Isfet Device And Array, Liam Stephen Hayes
Potassium And Sodium Sensing Isfet Device And Array, Liam Stephen Hayes
Electrical Engineering
The use of Ion-Sensitive Field Effect Transistors (ISFETs) as a means of testing a person’s potassium concentration in real-time has broad applications in the consumer space. An avid runner could use such a device to keep track of their hydration and salt levels. A hospital could use it for patients who require around-the-clock remote monitoring, and a variation of ISFETs are currently being used as continuous glucose monitors for diabetes patients. While ISFETs are not a new development in the field of microelectronics, their use as wearable devices has recently become relevant. The goal of this project is primarily to …
Air Wear, Ani M. Svadjian, Ada A. Tadeo, Deepthi Ravuru
Air Wear, Ani M. Svadjian, Ada A. Tadeo, Deepthi Ravuru
General Engineering
Since the outbreak of COVID-19 pandemic, hospitals have experienced an overwhelming increase in patients needing respiratory assistance. Our client identified the need for a sustainable, affordable, and portable outpatient device that will provide supplemental oxygen and assisted breathing to speed up the patient recovery process. Our team accomplished to design a device that contains a more sustainable oxygen supply method, has a longer functional duration, is safer and ergonomic, as well as compact.
Eagle Medical Tray Denesting & Debris Removal Process, Nicholas Allen Ungefug, Noah Chavez, Susana Shu-Lin Okhuysen, Michael Augustine Pennington
Eagle Medical Tray Denesting & Debris Removal Process, Nicholas Allen Ungefug, Noah Chavez, Susana Shu-Lin Okhuysen, Michael Augustine Pennington
Industrial and Manufacturing Engineering
Eagle Medical Incorporated is a contract medical device packaging and sterilization company. The company purchases thermoformed medical packaging trays, which maintain the sterility of medical devices, from various manufacturers. To ensure packaging quality and to prevent cleanroom contamination, Eagle Medical inspects and sterilizes each blister tray that they order. This process is an essential non-value-added activity that creates a bottleneck. Cleanroom employees must stop packaging medical devices and attend to the processing of blister trays and packaging solutions. The blister trays arrive at Eagle’s facility in nested stacks. Vibration and movement during shipping further compresses the stacks, which makes separation …
Self-Balancing Bicycle Device, Charles Cole, Raffy Lorenzo, Neil Boyal
Self-Balancing Bicycle Device, Charles Cole, Raffy Lorenzo, Neil Boyal
Biomedical Engineering
The sponsor, Justin Shaw, is currently developing a bicycle for an athlete who has lost movement in their legs. This athlete can no longer experience the unmatched feeling of naturally banking a bicycle at corners. The Self-Balancing Bike Device Team will create a device that can self-balance an electric recumbent bicycle at low speeds while being almost undetectable while turning. This document will outline the team’s background research into self-balancing vehicles, define the needs that must be solved, and delineate a schedule for future milestones.
Wire Cutting Saw For Spinal Fusion Surgery, Connor Kilzer Kilzer, Kayla Hong, Kyle Himmelein
Wire Cutting Saw For Spinal Fusion Surgery, Connor Kilzer Kilzer, Kayla Hong, Kyle Himmelein
Biomedical Engineering
The purpose of this project was to design and prototype a spinal facetectomy tool which will minimize the risk of spinal nerve damage and standardize this procedure for all surgeons. This Final Report for Alphatec describes the scope of the project, the process to get to the final prototype of the device, along with a project timeline for the team. A background of current devices and their issues is included to illustrate the need for a new spinal facetectomy device. Within the scope of the project includes a list of customer requirements for the device and the process of translating …
Rod Bend Approximator For Minimally Invasive Spinal Surgery, Amanda Hansell, Anise Ghandchi, Shervin Moghimi
Rod Bend Approximator For Minimally Invasive Spinal Surgery, Amanda Hansell, Anise Ghandchi, Shervin Moghimi
Biomedical Engineering
This Final Report will go over the project deliverables and future steps in the making of a rod bending approximator tool by the Cal Poly Senior Design team for the client SeaSpine. The latest designs and research done regarding minimally invasive surgery (MIS) is covered including the impediments with the current methods. SeaSpine presented the need to our team for an approximating tool within the MIS procedure. Our team began project planning through task generation and schedule development. Once the product definition was fully understood, competition was evaluated and engineering specifications were created for the project. A conceptual design was …
Insole Fall Prevention Device, Nick M. Hughes, Andrew M. Slaboda
Insole Fall Prevention Device, Nick M. Hughes, Andrew M. Slaboda
Biomedical Engineering
Falls among the aging population occur every single day, with 1 in every 5 resulting in some injury and 300,000 hospitalized every year with a hip fracture [1]. The most popular and effective way to mitigate these falls is through physical therapist intervention. However, with the increased popularity in telerehab, many patients at risk for falls cannot accurately convey their gait tendencies to their physical therapists from the comfort of their home or while not in direct contact with the PT. A device like an insole, implanted with force sensors, which measures different parts of a patient’s foot, could convey …
Impact Of Sex On Proliferation And Maturation Of Primary Isolated Myoblasts, Elsa M. Bean
Impact Of Sex On Proliferation And Maturation Of Primary Isolated Myoblasts, Elsa M. Bean
Biomedical Engineering
Peripheral arterial occlusive disease (PAOD) is caused by the buildup of atherosclerotic plaque causing restriction in blood flow in tissue, known as ischemia. It affects 8 million people in the United States and can hinder daily life through the onset of symptoms such as intermittent claudication and in extreme cases ulcers and gangrene. Surgical revascularization is not accessible to certain patient populations, such those of advanced age, highlighting a need for alternative therapies. For example, naturally occurring bypass arteries, called collateral blood vessels, can remodel and enlarge to bypass the occlusion. This process, known as arteriogenesis, has been studied as …
Baseball Pitching Arm Three-Dimensional Inertial Parameter Calculations From Body Composition Imaging And A Novel Overweight Measure For Youth Pitching Arm Kinetics, Dalton J. Jennings, Scott K. Reaves, Jeffrey Sklar, Colin Brown, John Mcphee, Scott Hazelwood, Stephen M. Klisch
Baseball Pitching Arm Three-Dimensional Inertial Parameter Calculations From Body Composition Imaging And A Novel Overweight Measure For Youth Pitching Arm Kinetics, Dalton J. Jennings, Scott K. Reaves, Jeffrey Sklar, Colin Brown, John Mcphee, Scott Hazelwood, Stephen M. Klisch
Biomedical Engineering
Many baseball pitching studies have used inverse dynamics to assess throwing arm kinetics as high and repetitive kinetics are thought to be linked to pitching injuries. However, prior studies have not used participant-specific body segment inertial parameters (BSIPs), which are thought to improve analysis of high-acceleration motions and overweight participants. This study's objectives were to (1) calculate participant-specific BSIPs using dual energy X-ray absorptiometry (DXA) measures, (2) compare inverse dynamic calculations of kinetics determined by DXA-calculated BSIPs (full DXA-driven inverse dynamics) against kinetics using the standard inverse dynamics approach with scaled BSIPs (scaled inverse dynamics), and (3) examine associations between …
Live Cell Imaging Heated Stage, Kerri Byrne, Anna Frauenheim, Simon Park
Live Cell Imaging Heated Stage, Kerri Byrne, Anna Frauenheim, Simon Park
Biomedical Engineering
Live cell imaging is a method used by scientists to obtain a better understanding of tissue and cell functions through the study and imaging of cellular dynamics, however it is often detrimental to cell cultures due to effects of changing environment on dynamic cellular events. In order to combat the effects of a changing environment, our team has designed, manufactured, and tested an incubation chamber that will control the heat and pH environment that these cells are experiencing throughout the imaging process. This project is sponsored by the BMED microscopy core group to be used with the Olympus IX73P2F inverted …
Abbott Lab Instrumentation Validation, Brandon James Mukai, Bosung Josh Kim
Abbott Lab Instrumentation Validation, Brandon James Mukai, Bosung Josh Kim
Biomedical Engineering: Graduate Reports and Projects
Over the past 40 years, since the initial catheter ablation procedure was completed, cardiac mapping has become an essential part of electrophysiological procedures. Cardiac mapping is an electrophysiological study that allows physicians to analyze the electrical activity of the heart in order to diagnose and treat cardiovascular disease. Institutions like Cal Poly can utilize professional instrumentation systems with an appropriate wet lab to develop new devices and study various phenomena in an in-vitro physiological environment. Cardiac mapping systems used in tandem with catheter ablation procedures are essential to ensuring that the trend of deaths due to cardiovascular disease continues to …
Acl Risk Data Comparison And Turnout Analysis Of Female Dancers Trained In Ballet And Female Traditional Jumping Sport Athletes, Samantha A. Campbell
Acl Risk Data Comparison And Turnout Analysis Of Female Dancers Trained In Ballet And Female Traditional Jumping Sport Athletes, Samantha A. Campbell
Master's Theses
INTRODUCTION: An increase in participation in females sports has created an increase of female athletes at risk for injuring their Anterior Cruciate Ligament(ACL)[12,21,29,44]. Traditional jumping sports have the highest rate of non contact ACL injuries, due to the use of movements of cutting, pivoting and landing on one foot[5,8,32,33,38]. ACL injuries can also be attributed to neuromuscular deficits such as the ‘Ligament Dominance Theory’, ‘Quadricep Dominance Theory’, ‘Trunk Dominance Theory’ and the ‘Leg Dominance Theory’[24,33]. The neuromuscular deficits are muscle strength, power or activation patterns that can cause an individual to have an increased risk of ACL injury[33]. Female traditional …
Optimization Of A Novel Nipam-Based Thermoresponsive Copolymer For Intramuscular Injection As A Myoblast Delivery Vehicle To Combat Peripheral Artery Occlusive Disease, Quentin R. Klueter
Optimization Of A Novel Nipam-Based Thermoresponsive Copolymer For Intramuscular Injection As A Myoblast Delivery Vehicle To Combat Peripheral Artery Occlusive Disease, Quentin R. Klueter
Master's Theses
There is a need for a minimally invasive delivery method to enable cell therapies to combat peripheral artery occlusive disease (PAOD) in end stage patients. Myoblasts show promise as a cell mediated therapy but warrant an improved delivery method to increase cell retention in the region of interest because of their adherent nature, relative to previously used BM-MNC’s that are non-adherent. Contemporary issues with achieving successful cell therapies of vasculature can be mainly characterized by the lack of clinical translation from promising animal studies and absence of cell delivery scaffolding. Naturally, polymers have been widely experimented with as grafts to …
Impact Of Primary Myoblasts On Macrophage Polarization In-Vitro, Olivia Welch
Impact Of Primary Myoblasts On Macrophage Polarization In-Vitro, Olivia Welch
Master's Theses
Peripheral artery disease (PAD) is characterized by the development of atherosclerotic plaques on arterial walls, leading to the narrowing of blood vessels, resulting in ischemia in the downstream tissue. In the United States, 12% of the adult population is affected by PAD and its related symptoms. Current surgical revascularization techniques can be effective in part of the patient population, but there is a need for other options. Alternatively, collateral blood vessels, or natural bypass arteries, enlarge to increase blood flow to the ischemic tissue in a process called arteriogenesis, which has been studied as a therapeutic option. Cell-based therapies, such …
Pickleball Paddle For Minimizing Elbow/Shoulder Joint Forces, Kaley Sapper, Nick Rodgers, Claire Steines
Pickleball Paddle For Minimizing Elbow/Shoulder Joint Forces, Kaley Sapper, Nick Rodgers, Claire Steines
Biomedical Engineering
The goal of this project was to design a pickleball paddle to prevent overuse injuries. This was accomplished through a design that minimizes joint forces experienced by the player during backhand strokes.
Feverdots, Kameryn Laureano, Heidi Silk, Rita Grigorian
Feverdots, Kameryn Laureano, Heidi Silk, Rita Grigorian
Biomedical Engineering
FeverDots are wearable temperature sensitive stickers that change color from black to pink at 99°F when placed on the temple or forehead. The objective of this project was to develop an efficient manufacturing method for FeverDots, and manufacture a device along with it. To create the FeverDots manufacturing device, the full design process was executed. The team went through a thorough ideation phase before ultimately defining and specifying the scope of the project.
The key customer requirements of this device include that it is lightweight, portable, durable, simple to assemble, easy to use, and able to generate uniform ink and …
Live Cell Imaging Gas Control, Elsa M. Bean, Brady C. Berg, Abby A. Jens
Live Cell Imaging Gas Control, Elsa M. Bean, Brady C. Berg, Abby A. Jens
Biomedical Engineering
The following document outlines the entire process for designing and manufacturing a Live Cell Imaging Gas Control subsystem in tandem with the Heated Stage subsystem to make a CO2 and temperature-controlled chamber for use with the Olympus IX73P2F Microscope. It highlights the current literature and patents surrounding live cell imaging and touches on the existing live cell imaging setups currently being used by other entities. Following this, it defines the scope of the project, key customer requirements, and engineering specifications to ensure the design meets all the needs of its users. This document includes project planning steps to establish …
Bone And Cartilage Compression Simulator, Karoline M. Wucherer, Benjamin A. Parmentier, Thomasina E. Hinkle
Bone And Cartilage Compression Simulator, Karoline M. Wucherer, Benjamin A. Parmentier, Thomasina E. Hinkle
Biomedical Engineering
A device was developed that delivers mechanical loads to bone and soft tissue samples under physiological conditions to aid in the research of tissue engineering bone and cartilage. To begin the design process, a Network Diagram and Gantt Chart were produced to create a general timeline for the project to follow. This allowed us to measure our progress and determine what effects (if any) delays could have on our project.
Minivette Integrated Sample Prep Funnel For Cepheid Cartridges, Hanna N. Blumer, Sophia Arias, Camille Porciuncula, Ben Runkle
Minivette Integrated Sample Prep Funnel For Cepheid Cartridges, Hanna N. Blumer, Sophia Arias, Camille Porciuncula, Ben Runkle
Biomedical Engineering
This report covers the redesign of the Sample Prep Funnel for Cepheid’s engineering team. The Sample Prep Funnel, responsible for relaying liquid from the sample collection device to the testing cartridge, experiences fluid loss that causes invalid test results. Our group's task was to redesign this funnel to minimize fluid loss and, overall, increase efficiency and effectiveness.
Astm Test Fixture For Spinal Screws, Sarah K. Pickering, Matthew W. Rowen, Kaajal N. Khanna, Thomas A. Sunding
Astm Test Fixture For Spinal Screws, Sarah K. Pickering, Matthew W. Rowen, Kaajal N. Khanna, Thomas A. Sunding
Biomedical Engineering
This document is an overview report of the Cal Poly Senior Project ASTM Test Fixture for SeaSpine orthopedic bone screws. The main application of orthopedic screws is to fasten implants directly to the bone structure, enhancing structural integrity. Testing for breaking angle, insertion torque, removal torque, axial pullout strength, and self-tapping force as specified in the ASTM F543 Annexes provides the FDA with vital screw mechanics and ensures manufacturing uniformity. The test system is comprised of custom and off the shelf components allowing for interchangeability, in case of part failure, and a low overall cost. It is mechanically capable of …
Wearable Spinal Cord Stimulator: Transcutaneous Delivery Of Electrical Impulses For Chronic Lower Back Pain, Abby Mae Gilstrap, Emma Katharina Jacobs, Jonathan Michael Campas, Sydney Michelle Moore
Wearable Spinal Cord Stimulator: Transcutaneous Delivery Of Electrical Impulses For Chronic Lower Back Pain, Abby Mae Gilstrap, Emma Katharina Jacobs, Jonathan Michael Campas, Sydney Michelle Moore
Biomedical Engineering
The purpose of this project was to create a wearable spinal cord stimulator capable of delivering transcutaneous electrical stimulation for the treatment of chronic lower back pain. Chronic lower back pain impacts a large percentage of the population, and current treatment options require either invasive surgery or management through pain medication. Therefore, there is a need for a treatment option that is non-invasive, convenient, and does not require medication. To meet these needs, a wearable device was created that consists of internal circuitry contained within external housing that allows for the delivery of user-controlled stimulation via electrodes that are plugged …
Youth Pitching Kinematics: Associations With Body Overweight Parameters, Christina K. Fong
Youth Pitching Kinematics: Associations With Body Overweight Parameters, Christina K. Fong
Master's Theses
The objective of this study was to investigate associations between injury-related kinematic parameters and overweight measures for youth baseball pitchers. The injury-related kinematic parameters considered were measurements 1) at foot contact: stride length, front foot position, shoulder external rotation, shoulder abduction, and elbow flexion; 2) between FC and ball release: peak knee extension; and 3) at BR: shoulder abduction. Data from three separate collection sites examined pitching mechanics of 18 10- to 11-year-old pitchers, 11 14- to 16-year-old pitchers, and 104 16- to 18-year-old pitchers Linear regression analyses were performed to determine significant correlations between kinematic parameters and body mass …
Integration Of Electrical Impedance Spectroscopy For Multichannel Cell Culture Measurement, Conard Chan
Integration Of Electrical Impedance Spectroscopy For Multichannel Cell Culture Measurement, Conard Chan
Master's Theses
ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY (EIS) has been widely used to study the electrical properties of biological material due to its non-invasive nature and experimental reliability. However, most of the precision impedance analyzers used in EIS only provide single- or two-channel measurements which are inadequate for larger-scale multiplexed measurements, such as those found in modern microfluidic cell culture experiments. The Biomedical Microsystems Laboratory has developed a 16-channel cell culture platform with integrated electrode arrays for monitoring cell growth and electrical properties (i.e., the so-called “electrical phenotype”). In this paper, a system consisting of a 16-channel solid-state analog multiplexer (MUX)paired with a low-cost, …
3-In-1 Medical Lancet, Jonathan J. Panella, Gage Vogtlin, Marissa Koski, Benjamin Neyland
3-In-1 Medical Lancet, Jonathan J. Panella, Gage Vogtlin, Marissa Koski, Benjamin Neyland
Mechanical Engineering
First responders need a quick, sterile, and convenient way to sample blood for glucose testing because glucose levels are a vital metric in assessing time-critical emergency situations. The blood sampling process consists of pre-sterilizing the sample site on the skin with an alcohol pad, pricking the skin with a lancet, and lastly, after sampling, putting a bandage over the prick site. The scope of this project is to design a device which integrates and streamlines the use of the three sub-processes (sterilization, lancing, and bandaging) while upholding the necessary requirements of a single-use medical device and considering other factors which …
Characterizing Direction Specific Ganglion Cell Receptor Activation Using A Perturbation Based Decomposition Method, Camila Paola Monchini Moline
Characterizing Direction Specific Ganglion Cell Receptor Activation Using A Perturbation Based Decomposition Method, Camila Paola Monchini Moline
Master's Theses
Characterizing postsynaptic current signals in the retina by neuroreceptor activation frequency is important for studying the mechanism of action behind phototransduction of varied visual stimuli. A better understanding could in turn lead to the creation of methods for early detection and prevention of debilitating optical neuropathies, such as glaucoma, age-related macular degeneration, and retinitis pigmentosa. More recent in-vitro and in-vivo studies have aimed to differentiate the effects of various neurotransmitters, such as acetylcholine, GABA, and glutamate, on receiving and processing different types of visual stimuli from the retina into the visual cortex.
The focus of this work will be to …
Assessing The Effects Of Oxaliplatin On An In Vitro Three-Dimensional Human Colorectal Cancer Model, Sabrina Nelson
Assessing The Effects Of Oxaliplatin On An In Vitro Three-Dimensional Human Colorectal Cancer Model, Sabrina Nelson
Master's Theses
Colorectal cancer is the third most common cancer in the United States with a 5-year late-stage survival rate of only 14%. Due to the lack of translation between animal models and clinical trials as well as the inefficacy of many chemotherapeutics in initial clinical trials, researchers are turning to in vitro drug screening models in an effort to mimic the conditions in vivo. This research project aimed to validate an in vitro tumor culture model within a microfluidic device using a clinically relevant chemotherapy drug. The first experiment consisted of a cell density and drug concentration study to determine …
Classifying Electrocardiogram With Machine Learning Techniques, Hillal Jarrar
Classifying Electrocardiogram With Machine Learning Techniques, Hillal Jarrar
Master's Theses
Classifying the electrocardiogram is of clinical importance because classification can be used to diagnose patients with cardiac arrhythmias. Many industries utilize machine learning techniques that consist of feature extraction methods followed by Naive- Bayesian classification in order to detect faults within machinery. Machine learning techniques that analyze vibrational machine data in a mechanical application may be used to analyze electrical data in a physiological application. Three of the most common feature extraction methods used to prepare machine vibration data for Naive-Bayesian classification are the Fourier transform, the Hilbert transform, and the Wavelet Packet transform. Each machine learning technique consists of …