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DESCRIPTIONBiomedical Engineering. Department of Chemical and Biomedical Engineering Kate Gleason College of Engineering Rochester Institute of Technology http://www.rit.edu/kgcoe /biomedical. Daniel Phillips, Ph.D., Program Director firstname.lastname@example.org. Outline . What is biomedical engineering? - PowerPoint PPT Presentation
Engineering Freshmen Class
Biomedical EngineeringDepartment of Chemical and Biomedical EngineeringKate Gleason College of EngineeringRochester Institute of Technologyhttp://www.rit.edu/kgcoe/biomedical
Daniel Phillips, Ph.D., Program Director email@example.comRITBiomedical Engineering1Outline What is biomedical engineering?
Applications and challenges
Employment prospects and data
RITBiomedical Engineering2What is Engineering? Scientists explore to gain understanding - Engineers develop creative solutions to problems based on that understanding.
Engineering focuses on the development of new products and processes to enhance the world around us,
leveraging in creative and innovative ways the vast knowledge base embraced by the physical and life sciences (biology, chemistry, and physics),
enhanced by the quantitative power of mathematics.
RITBiomedical EngineeringWhat is Biomedical Engineering? The branch of engineering that uniquely leverages the vast knowledge base embraced by biology to solve problems focused on healthcare & the human body.
Biomedical Engineersunderstand the inner workings of the human body, including its organs, circulatory system, nerves, muscles, and bones, as well as the unique constraints placed on design. are experts at assessing the human body as a complex, interactive system.provide teams a link between human biology & engineering analysis.work in teams of experts across multiple disciplines
to create medical and health-related productsRITBiomedical EngineeringBiomedical Engineers work in teams to
develop devices that solve medical and health-related problemsArtificial organs and tissuesProsthesesImplants
develop probes and sensing equipment specific to the human physiology
develop procedures to implement devices and new technologies in and on the human body
interpret and run clinical trials on new devices and procedures
What is Biomedical Engineering? RITBiomedical EngineeringCore Competencies:Human anatomy, biology, physiologyStatisticsProblem solving capabilitySystems engineeringAll core sciences, integrated with mathematics and infused with engineering training, are used to address a wide variety of challengesrelated to the healthcare and the human body!
What is Biomedical Engineering? RITBiomedical EngineeringKidneyBlood & WasteBloodWasteExample: The KidneyFunction of kidney is to remove soluble waste from body.Engineers analyze the kidneys functions subject to given inputs,and develop models that can predict outputs.Systems Engineering Approach Engineers develop devices that replicate kidney functions. RITBiomedical Engineering7The kidney does not operate in isolation; it interacts with other systems in the body!Systems Engineering Approach Waste from cellular processesKidneyBlood & WasteBloodWasteHeartBlood & WasteBlood & WasteWaste from cellular processesNeed to analyze kidney and interactions!RITBiomedical Engineering8US Dept of Labor
Bureau of Labor Statistics
Occupational Employment StatisticsOccupational Employment and Wages, May 2010
http://www.bls.gov/oes/current/oes172031.htmRITBiomedical Engineering9Biomedical engineers
Employment by:industry, occupation, and percent distribution, (2008 and projected 2018)
* (Employment in thousands)
**Industries with fewer than 50 jobs, confidential data, or poor quality data are not displayed
Occupational Outlook Handbook, 2010-11 Editionftp://ftp.bls.gov/pub/special.requests/ep/ind-occ.matrix/occ_pdf/occ_17-2031.pdfRITBiomedical Engineering10Questions?RITBiomedical Engineering11A simple challenge
Measure oxygen actually delivered to tissue
Take tissue sample and measure oxygen content (pretty invasive, messy)
Take blood perfusing tissue and measure oxygen content (somewhat removed, still sort of messy)RITBiomedical EngineeringA simple challenge
Measure oxygen actually delivered to tissueNONINVASIVELY (no bloodshed)
Pulse oximetry provides an indirect method to assess two parameters simultaneously
Percentage of oxygenated hemoglobin
Mechanical pumping action of heartRITBiomedical Engineering
Oxygen carried mainly via oxygenated hemoglobin
Deoxygenated hemoglobin absorbs light differently than oxygenated hemoglobinRITBiomedical EngineeringEngineering solution amount of oxygen delivered
Measure absorbance at two different wavelengths to determine percentage of oxygenated hemoglobin
If you know amount of hemoglobin per unit volume of blood, you can assess amount of oxygen available to be delivered to tissue (basic goal)
SpO2 percentage saturation of hemoglobin with oxygen
RITBiomedical EngineeringEngineering solution measuring pumping action of heart
Heart pumping produce pulsatile pressure in arterial vasculature
Pressure pulses produces local volume changes
Volume changes change overall absorbance of light
Measuring absorbance changes provides indication of pressure changes which can be traced back to heart pumping
RITBiomedical EngineeringPulse oximeter a multidisciplinary effort
Biomedical basic design of the instrumentation based on understanding of cardiovascular physiology, cell and molecular biology
Electrical light drive and sensing circuitry
Mechanical finger clip mechanism
Computer signal processing
Chemical Organic Light Emitting Diode display
Optical light source and detectionRITBiomedical EngineeringDemonstration
Finger pulse oximeter
Meaures pulse rate and SpO2
Which would you expect to change more rapidly?Which would you expect to vary the most person to person?
Simple breath hold and release
- What happens to Pulse Rate?
- What happens to SpO2?