William L Johnson

Title: **William L. Johnson: Innovator in Medical Device Technology**

Introduction

William L. Johnson, a prominent inventor based in Kittanning, PA, holds a remarkable portfolio of five patents. His contributions, particularly in the field of medical devices, have advanced techniques in cardiac care and monitoring. Johnson's innovative approaches have paved the way for significant improvements in patient treatment methodologies.

Latest Patents

Among his latest inventions is the **Radio Frequency Dilator Sheath**, a sophisticated medical device designed for separating encapsulated elongated structures, such as electrical cardiac leads, from biological tissue. This device features inner and outer coaxial dilator sheaths with beveled distal ends, engineered to mechanically loosen and detach tissue from an implanted cardiac lead. When energized, the electrical conductors positioned at the distal end emit an arc that effectively separates the encapsulating biological tissue from the elongated electrical structure.

Another remarkable invention is the **Pacemaker with Activity-Dependent Rate Limiting**. This advanced pacemaker adjusts its pacing rate based on the patient’s activity level, which is detected through various indicators, including blood temperature in the right ventricle, blood oxygen concentration, and body motion. The device's control circuit intelligently modifies both the upper and lower rate limits, as well as the refractory periods, in response to the patient's changing activity levels.

Career Highlights

Throughout his career, Johnson has collaborated with esteemed companies, notably **Cook Pacemaker Corporation** and **Cook Vascular Incorporated**. His roles in these organizations have significantly influenced the development of innovative medical devices, demonstrating his commitment to enhancing cardiac care technologies.

Collaborations

Johnson has worked closely with notable colleagues such as Kevin S. Heggs and Donald A. Stevens. Their collaborative efforts within the realm of medical devices have contributed to various advancements in the industry, reflecting a shared dedication to innovation and patient well-being.

Conclusion

William L. Johnson's inventive spirit and dedication to improving medical technologies underscore his valuable contributions to the field. With five patents to his name, his work continues to impact the lives of patients, driving forward the frontier of cardiac treatment. His innovations represent a blend of engineering prowess and medical insight, establishing him as a key figure in contemporary medical device development.