This inventor holds 62 USPTO granted patents and 5 published patent applications, plus 3 CIPO patents and 1 EPO patent, primarily in Dialysis Systems (CPC class A61M). Top assignees: Renal Solutions, Inc., Ash Medical Systems, Inc., Hemocleanse, Inc.. Active years: 1978-2025.
Inventors with similar research interests:
Location History:
- West Lafayette, IN (US) (1994 - 2001)
- Lafayette, IN (US) (1978 - 2024)
Company Filing History:
8 out of 16 
6 out of 6 
6 out of 6 
Years Active: 1978-2025
Areas of Expertise:
Title: Innovator Stephen Richard Ash: Pioneering Advances in Catheter Technology
Introduction
Stephen Richard Ash, an esteemed inventor based in Lafayette, Indiana, holds an impressive portfolio of 59 patents primarily focused on advancements in catheter technology. His innovative work has significantly impacted medical practices, particularly in the realm of peritoneal dialysis and catheter lock solutions.
Latest Patents
Among his latest patents, the "Slotted Peritoneal Access Catheter" introduces a T-shaped design that enhances fluid flow through unique slit-shaped ports. This innovative design allows for high outflow and inflow rates while minimizing fluid velocity, thereby improving patient care in peritoneal dialysis procedures. Another noteworthy patent, the "Catheter Lock Solution Comprising Sodium Citrate and Benzyl Alcohol," explores methods to enhance catheter patency and reduce microbial infection risk. This composition, made up of about 10% sodium citrate and approximately 1.5% benzyl alcohol, is designed to maintain density similar to blood during the lock period, ensuring effective retention in indwelling catheters.
Career Highlights
Throughout his career, Stephen has collaborated with various organizations, including Renal Solutions, Inc. He has played a vital role in pioneering catheter innovations that have contributed to better outcomes in medical procedures involving intravenous and peritoneal access.
Collaborations
In his innovative journey, Stephen has worked alongside distinguished colleagues such as David John Carr and Janusz Steczko. Their collaboration has further propelled advancements in catheter technology and ensured the success of groundbreaking projects.
Conclusion
Stephen Richard Ash exemplifies the spirit of innovation in engineering and medical technology. His extensive array of patents and collaboration with other inventors highlight his commitment to enhancing patient care through practical and inventive solutions in catheter technology. With a career dedicated to solving complex medical challenges, Stephen continues to influence the future of healthcare innovation.