Location History:
- Westchester, NY (US) (1994)
- Scarsdale, NY (US) (1991 - 1998)
- Fresno, CA (US) (1998 - 2010)
Company Filing History:
2 out of 2 
2 out of 4 
1 out of 21 
Years Active: 1991-2010
Title: Innovations by Stanley F. Chang
Introduction
Stanley F. Chang is a notable inventor based in Fresno, California, recognized for his contributions to medical technology. With a total of 11 patents to his name, he has made significant advancements in the field of endoscopy.
Latest Patents
One of his latest patents is the "Colonoscope guide and method of use for improved colonoscopy." This invention provides a guide and method for tilting a colonoscope in the rectum during a colonoscopy, facilitating a favorable direction for the advancement of the scope through the colon. The guide features an elongated body member, which can be partially rigid, and is designed to be attached to a handle at its proximal end. It includes ring members along its length to maintain close abutting relation with the scope, allowing for side-loading. Additionally, an injection port is incorporated for lubricant application, minimizing sigmoid looping during the procedure.
Another significant patent is the "Locking mechanism for an endoscopic overtube." This invention comprises a tubular member with a slot for the insertion of an endoscope, designed to securely close around the endoscope during procedures. The overtube features a second, smaller lumen for receiving an elongated member, which helps to align and maintain closure of the slot. A sleeve can also be utilized at the distal end to ensure the slot remains closed.
Career Highlights
Throughout his career, Stanley F. Chang has worked with various companies, including Advanced Visual Instruments, Inc. His innovative work has contributed to the development of more effective medical devices, enhancing patient care and procedural efficiency.
Collaborations
He has collaborated with notable individuals in the field, including James C. Easley and Avi Grinblat, further enriching his contributions to medical technology.
Conclusion
Stanley F. Chang's inventions, particularly in the realm of endoscopy, demonstrate his commitment to improving medical procedures. His patents reflect a deep understanding of the challenges faced in colonoscopy, and his innovative solutions continue to impact the field positively.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.