Company Filing History:
Years Active: 1976-1978
Title: Innovations of Charles M. Hill
Introduction
Charles M. Hill is an accomplished inventor based in Los Altos, California. He has made significant contributions to the field of medical technology, particularly in gas analysis. With a total of 2 patents, his work has advanced the understanding and measurement of carbon dioxide concentrations in the blood.
Latest Patents
One of his notable inventions is a medical-analytical gas detector. This gas analyzer is specifically designed for making transcutaneous measurements of CO.sub.2 concentration in the blood. In one embodiment, sample gases from the body are circulated within a cavity of the device. A rotating wheel in this cavity includes two reference cells and a sample cell, which are sequentially rotated into the optical path between a source and a detector. This setup provides three signals that can be combined to indicate the CO.sub.2 concentration in body fluids. A preferred embodiment features an 'inverted cell' that is in open communication with the circulating sample gas, ensuring that the gas in the sample cell is a portion of the circulating gas surrounding the reference cells. This design allows for an output indication that is insensitive to contaminants in the sample. Another embodiment isolates the sample cell from the surrounding region and positions it in series with the reference cells in the optical detection path. The rotating wheel is equipped with permanent magnets that interact with electromagnets to facilitate its rotation.
Career Highlights
Charles M. Hill has had a distinguished career at Hewlett-Packard Company, where he has applied his innovative ideas to develop advanced medical devices. His work has been instrumental in enhancing the accuracy and reliability of gas detection technologies.
Collaborations
Throughout his career, he has collaborated with notable colleagues, including Paul E. Stoft and John A. Bridgham. These partnerships have contributed to the successful development of his inventions.
Conclusion
Charles M. Hill's contributions to medical technology through his innovative gas detection devices have made a significant impact in the field. His work continues to influence advancements in medical diagnostics and patient care.