Biomedical Engineering

Biomedical engineering is considered to be a part of engineering field and techniques related to the field of medicine. It is the blend of “mechanical and mathematical expertise of engineering with the medical expertise of physicians” for the betterment and advancement in taking care of patients and providing them with better worth of facilities.

Since Biomedical engineering has been discovered recently, a lot of work in this field involves constant investigation and improvement, consisting of a whole range of other fields within itself.

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The basic and fundamental task in biomedical engineering is to make modifications and to repair medical appliances which are utilized by hospitals, excluding those appliances which already is under warrantee or has agreement from some other outside company. This is because all the equipment which is new already has gone through complete testing.

There are equipments that are made in such manner that testing them does not require a lot of money and the tests are still precise and correct. Numerous equipment and devices used in biomedical engineering are required to be sterilized. “Imaging technologies, such as MRIs, X-Rays, CT scans, PET scans and PET-CT scans” are considered to be the most composite devices found in hospitals. (

Any biomedical engineer is suppose to work along with people who are professionals in some manner relating to health care, which can include physicians, nurses, therapists, and technicians. There are many tasks which can be given to biomedical engineers in order to work like drawing instruments, equipment and writing software, to gather up information and information from other technical resources in order to create fresh methods, or to perform investigation that are required to unravel clinical problems. (

Different countries have different structures of appointing biomedical engineers. Taking the case of United States, the biomedical engineers can possibly work under two diverse regulatory structures. The clinical equipment and machinery are mostly taken care of by the Food and Drug Administration (FDA).

Clinical engineering is a root of biomedical engineering for those specialized people who have the duty for the supervising medical machineries in hospitals. The job of a clinical engineer is basically to purchase and handle “medical device inventory”, and to look after biomedical engineering technicians, making sure that “safety and regulatory” matters are properly under observation and also serve as a technological consultant for any matter that may rise up at hospitals concerning medical devices.  (

The main obvious and noticeable involvement of biomedical engineering to clinical work consists of instrumentation for “diagnosis, therapy, and rehabilitation.” 1970s was the start of the uprising in the disease diagnosis when “computed tomography, magnetic resonance imaging, and ultrasonic imaging” came into existence The magnetic resonance imaging scanners are widely utilized in rooms where operations are taken place in order to lead biopsies and stereo tactic surgery.

Ultrasound makes it possible to let the soft-tissue imaging to take place but its resolution is relatively low and its cost is low as well. (

The degrees of biomedical engineers are mostly needed from recognized universities and given to those who have a good hand knowledge and learning of “engineering and biological science.” The jobs given to biomedical engineers can have salaries ranging from US $ 50,000 to $ 100,000 per year, according to 2005 survey.

At this moment, there are not a lot of biomedical engineers, only less than 10,000, but there are high expectations that this number will keep on incrementing as soon as present medicine goes through more development and improvements. Since this field is dragging attention among many people, and creating interest in them, universities are bringing changes in their biomedical engineering courses.

As what is being told by U.S News and World Report, the course offered at Johns Hopkins University has taken first place in the country in the field of biomedical engineering. When it comes to undergraduate level, more and more courses are getting recognition from ABET “as accredited bioengineering/ biomedical engineering programs in the United States”.


The engineers of biomedical engineering usually get job in various places like teaching institutes, within the universities, inside any subject-related industry, at hospitals, in research departments, and at regulatory agencies of government. Mostly they utilize their educational knowledge in both the field of medicine and of engineering. (

Pulse oximeter is a medical tool which is fundamentally used to calculate the quantity of oxygen in the blood. A pulse oximeter has turn out to be an essential tool used in present-day medical activities. The producers of pulse oximeter have been promoting this device day by day in order to bring modifications in this device so that the percentage of error can be decreased and to make sure that it’s safe to use. In this way, the clinicians are acquainted with the recent and better devices.

As this technology is gaining success, pulse oximeters are not widely available in numerous shapes and sizes. Not only this, they are now also being used for various purposes as well, though the chief motive of pulse oximeters is to check oxygen saturation readings.

“Clinical motion by the patient and corresponding errors in reading accurate saturation levels pose a major challenge to manufacturers.” Medical motion may result in instability, error in display, incorrectness, and stuck ness of saturation outcomes. Investigations have shown that some widespread motions between adults include “extending, rubbing, clenching and flexing” and the frequent motions in kids are “kicking, clenching and flexing.”

Oximeters usually compute saturation by calculating the difference in “trough and peak of each plethysmographic waveform.” Superior and modern digital signaling makes it possible for the hi-tech meters to create precise results that could not have been possible with this advancement. (

The typical task of an oximeter is to calculate the normal percentage. The range of normal is mostly from 95 percent to 100 percent. Recent and modern pulse oximeters can also get attached to the finger of a patient through a clip and then calculate the quantity of substances with the help of visional possessions of light. Oximeters are dangerous while used as an urgent situation medical aid and also can be dangerous for those patients who are suffering from cardiac or respiratory troubles.

This device is not only used in hospitals and labs, but also are used as a personal possession by those people who are reliant on “supplemental oxygen.” They are possessions of such people as they can easily check upon their oxygen requirements anytime. Some people also use pulse oximeters when they are in the process of exercising, so they can easily watch their oxygen stages from time to time.

All these vast uses of pulse oximeters have made it hit the marketing world with great success. The prove is the continuous developments of this device and the enormous ways of its utilization not only at hospitals, but also as daily use equipment.

Works Cited

Biomedical Engineering, Wikipedia, 17 October 2006, Accessed on October 19, 2006 <>

Planning a Career in Biomedical Engineering, Biomedical Engineering Society, 1999, Accessed on October 19, 2006

Advances in Biomedical Engineering, Linda G. Griffith; Alan J. Grodzinsky, Accessed on October 19, 2006 <>

What is An Oximeter?, Gray Rollins, 25 March 2006, Accessed on 21 October 2006 <>