History of Bio-Medical Engineering

Background Of Bio-Medical Engineering


According to Biotech's Life Science Dictionary, biomedical engineering is described as the use of engineering technology instrumentation and methods to solve medical problems. Applications in this field include efforts to better understand human physiology and attempts to manufacture artificial limbs and organs.
All of the above disciplines require knowledge and expertise in two specific areas: biology and engineering science. For this reason, they will all be considered to belong to biotechnology. 'Biomedical Engineering' may be defined as the application of engineering to medicine and the life sciences. Since 'engineering' may be defined in turn as applied science (especially the physical sciences and mathematics), this is a pretty broad definition. The field is in fact extremely diverse. One way to subdivide it is by the area of engineering or physical science being applied:
  • Chemical engineering, chemistry
  • Computer science
  • Electrical engineering (electronics, signal & systems analysis)
  • Mathematics, including statistics
  • Mechanical engineering
  • Physics


History of Biomedical Engineering
Biomedical Engineering originated during World War II. Biologists were needed to do work involving advances on radar technology. This work prepared them for the electronic developments in medicine in the post-war years. However, two problems arose. The next generation of biologists did not have the benefit of that knowledge and technology advanced so rapidly it surpassed the older generation's understanding. Obviously, a bridge between the gap of technical knowledge and biology was needed. Doctors and biologists with an interest and understanding of engineering, along with electrical engineers with an interest in biology, became the first bioengineers. Those primarily concerned with medicine became the first Biomedical Engineers.
These are some major milestones in the Biomedical Engineering Field.
  • 1895: Conrad Roentgen (German) discovered the X-Ray using gas discharge tubes.
  • 1896: Henry Becquerel (French) discovered X-rays were emitted from uranium ore. Two of his students, Pierre and Marie Curie, traced the radiation to the element radium. · 1901: Roentgen received the Nobel Prize for discovery of X-rays.
  • 1903: William Eindhoven discovered the electrocardiogram (ECG).
  • 1930’s: X-rays were being used to visualize most organ systems using radio-opaque materials.
  • 1929: Hans Berger discovers the electroencephalogram (EEG).
  • Mid 1930’s-early 1940’s: antibiotics, sulfanilamide and penicillin, reduced cross-infection in hospitals.
  • 1930’s: refrigeration, permitted blood banks.
  • 1927: Drinker respirator. · 1940’s: cardiac catheterization. · 1950’s: electron microscope.
  • 1950’s-1960: nuclear medicine. ·
  • 1953: Cardiopulmonary bypass (heart-lung machine).
  • 1970’s: CT, MRI imaging systems.


What is a Biomedical Engineer?
A Biomedical Engineer uses traditional engineering expertise to analyze and solve problems in biology and medicine, providing an overall enhancement of health care.Students choose the biomedical engineering field to be of service to people, to partake of the excitement of working with living systems, and to apply advanced technology to the complex problems of medical care.
Biomedical engineers may work with other health care professionals including physicians, nurses, therapists and technicians. They are called upon in a wide range of capacities: to design instruments, devices, and software, to bring together knowledge from many technical sources to develop new procedures, or to conduct research needed to solve clinical problems.
A role for technically trained people in biomedical engineering is direct participation in solving biomedical problems, that is, in research and development, either independently or in collaboration with biomedically trained researchers. A second role is in facilitating the use of existing technology in the health-care system, by education and advising medical, nursing and other personnel, by seeing that equipment is properly maintained, and so on; this is often referred to as 'clinical engineering'. In real life there is often a great deal of overlap between these two roles.
It should be noted that many people involved in what might be called 'biomedical engineering' are not in the legal sense, 'engineers'; this includes physiologists, technicians, technologists, and others. Conversely, engineers who happen to be working on some biomedical application do not necessarily think of themselves as 'biomedical' engineers, if that is not their primary interest.

Typical Biomedical Engineering Pursuits
  • Research in new materials for implanted artificial organs.
  • Development of new diagnostic instruments for blood analysis.
  • Computer modeling of the function of the human heart.
  • Writing software for analysis of medical research data.
  • Analysis of medical device hazards for safety and efficacy.
  • Development of new diagnostic imaging systems.

Biomedical Engineering Areas
  • Application of engineering system analysis (physiologic modeling, simulation, and control) to biologic problems.
  • Detection, measurement, and monitoring of physiologic signals (i.e., biosensors and biomedical instrumentation).
  • Devices for replacement or augmentation of bodily functions (artificial organs) Computer analysis of patient-related data and clinical decision-making (medical. informatics & artificial intelligence).
  • Medical imaging, i.e., the graphic display of anatomic detail or physiologic function.
























































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