John G Ryan

Title: Innovations of John G Ryan

Introduction

John G Ryan is a notable inventor based in San Jose, California. He has made significant contributions to the field of medical technology, particularly in the development of implantable devices. With a total of four patents to his name, Ryan's work has had a profound impact on cardiac care.

Latest Patents

One of Ryan's latest patents is for a system configuration for a combined defibrillator and pacemaker. This invention focuses on various features of an implantable device that delivers a multi-phase defibrillation waveform. It includes mechanisms to ensure low patient current leakage and protection circuitry to safeguard the pacing components from high voltage outputs. Additionally, the system can detect lead breaks without delivering a defibrillation pulse, enhancing patient safety. Another significant patent involves a power supply down-conversion, regulation, and low battery detection system. This innovation features a low battery detect circuit that shuts down high current circuitry when battery voltage drops, allowing the battery to recover and providing a status indicator flag.

Career Highlights

Ryan has worked at Ventritex, Inc., where he has been instrumental in advancing medical device technology. His expertise in the field has led to the development of critical innovations that improve patient outcomes.

Collaborations

Ryan has collaborated with notable colleagues, including Benjamin D Pless and James M Culp, contributing to the success of various projects within the company.

Conclusion

John G Ryan's contributions to medical technology through his patents and work at Ventritex, Inc. highlight his role as a key innovator in the field. His inventions continue to influence cardiac care and improve the lives of patients.