Los Angeles, CA, October 5, 2023 – Tetrous, Inc., a regenerative medicine company, today announced that another patent (U.S. Patent Number 11,759,548) specifically related to the EnFix family of demineralized cortical bone fiber implants and their method of manufacture has been issued by the United States Patent and Trademark Office.
EnFix RC®, the first product in the EnFix family, is a procedure-specific implant for rotator cuff repair. It is currently available in the United States and Australia. EnFix RC® changes the paradigm in rotator cuff surgery by enhancing healing at the tendon to bone interface, i.e., at the enthesis, where failure often occurs. The 100% demineralized bone fiber (DBF) implants provide osteoinductivity and osteoconductivity in a unique graft, while FormLok™ technology imparts shape retention to the device, even when immersed in liquid, as is typical in arthroscopic surgery. The enhanced biologic repair at the interface between tendon and bone is a significant advancement. Optimal biologic performance is provided in an implant that has minimal disruption to the current surgical technique.

The newly issued patent, titled “Demineralized Bone Fiber Implant Compositions and Methods for Rotator Cuff and ACL Repair”, further augments Tetrous’ strong portfolio of intellectual property covering demineralized cortical bone fiber implants, bone healing, and enhancement of tendon to bone repair. “We are pleased that the U.S. Patent Office has yet again recognized the uniqueness of our technology and has granted this additional patent.”, said Andy Carter, PhD, Tetrous’ Co-Founder, Director and co-inventor on the issued patent. “Our growing intellectual property portfolio provides Tetrous a sustainable competitive advantage in the next-generation enthesis repair market”.
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About Tetrous, Inc.
Founded in 2019, Tetrous, Inc. utilizes next generation advanced technologies for enthesis repair in sports medicine applications. The first offerings in the EnFix family of products are EnFix RC and EnFix TAC for rotator cuff repair. Tetrous was conceived from technology developed for spine surgery. The Company is employing and expanding the technology for novel applications in sports medicine. Its core technology has been used in over 150,000 implants in spine applications. Tetrous enjoys significant IP protection for its EnFix family of products with multiple issued patents and, additionally, has an exclusive license to the demineralized bone fiber technology used in its products for sports medicine applications from TheraCell, an ISTO Biologics Company.
EnFix®, EnFix RC™, EnFix TAC™, and It’s All About the Enthesis™ are trademarks of Tetrous, Inc.
FormLok™ is a trademark of TheraCell, Inc., an Isto Biologics company.
For more information visit www.tetrous.com and follow us on LinkedIn (www.linkedin.com/company/tetrous).