Company Filing History:
6 out of 8 
3 out of 490 
3 out of 20 
Years Active: 1991-2015
Title: **The Innovative Contributions of Keith Bridger**
Introduction
Keith Bridger is an accomplished inventor based in Washington, DC, known for his groundbreaking innovations in medical technology. With a total of 13 patents to his name, Bridger has made significant contributions to the field, particularly in developing devices that enhance physiological monitoring in challenging environments.
Latest Patents
Among his most notable inventions is the **High Sensitivity Noise Immune Stethoscope**. This state-of-the-art stethoscope is designed specifically for use in high-noise environments, where traditional stethoscopes may fail to provide accurate readings. The device is engineered to match the mechanical impedance of monitored physiological activity while being mismatched to the mechanical impedance of air-coupled acoustic activity. One of its innovative features is the ability to switch between two operational modes: a passive acoustic system and an active Doppler system. The passive system includes a housing, a flexural disc mounted with the housing, and an electromechanical stack that makes contact with the patient's skin. In contrast, the active system employs a high-frequency transmitter and receiver to detect Doppler shifts. This dual capability enables the stethoscope to function effectively even in environments with ambient noise levels of 100 dBA or higher.
Career Highlights
Bridger's career has been marked by his work with notable companies such as Active Signal Technologies, Inc. and Martin Marietta Corporation. His tenure at these organizations has allowed him to leverage his inventive skills and collaborate on various projects that push the boundaries of technological advancements in medical devices.
Collaborations
Throughout his professional journey, Keith Bridger has collaborated with fellow innovators, including Arthur V. Cooke and Joseph J. Lutian. These partnerships have fostered a creative environment that encourages the exchange of ideas and further stimulates innovation in the field.
Conclusion
In summary, Keith Bridger stands as a prominent figure in the world of medical inventions, notably with his development of the High Sensitivity Noise Immune Stethoscope. His contributions not only improve patient care but also exemplify the spirit of innovation in medical technology. With a solid foundation built on collaboration and practical application, Bridger continues to inspire aspiring inventors in the industry.