John Andrew Crowe

Title: The Innovations of John Andrew Crowe

Introduction

John Andrew Crowe is a notable inventor based in West Bridgford, GB. He has made significant contributions to the field of photoplethysmography, holding a total of 5 patents. His work has advanced the understanding and application of light-based measurement techniques in medical diagnostics.

Latest Patents

One of Crowe's latest patents involves a photoplethysmograph device that includes a light source for illuminating a target object. A modulator drives the light source, causing the output intensity to vary according to a modulation signal at a specific frequency. A detector captures light from the target object and generates an electrical output based on the intensity of the received light. The device features a demodulator with a local oscillator that processes the detector output, producing a demodulated output that is insensitive to any phase difference between the modulation signal and the oscillator. This output is indicative of blood volume and composition over time. The plethysmograph can operate in either transmission or reflectance mode, utilizing the green part of the optical spectrum and polarizing filters when in reflectance mode.

Career Highlights

Throughout his career, John Andrew Crowe has worked with several prominent organizations, including Monica Healthcare Limited and the University of Nottingham. His innovative work has positioned him as a key figure in the development of medical devices that utilize light for health monitoring.

Collaborations

Some of his notable coworkers include Barrie Robert Hayes-Gill and David Keith James. Their collaborative efforts have contributed to the advancements in the technologies Crowe has developed.

Conclusion

John Andrew Crowe's contributions to photoplethysmography and his innovative patents reflect his dedication to improving medical technology. His work continues to influence the field and enhance the capabilities of health monitoring devices.