ASNIS Turn-Lock Screw
A surgeon-driven fixation innovation designed for
Problem with conventional interface screws
- Requires ~20 hand turns for insertion
- Screw threads can interfere with the tendon graft and as a result can cause fraying or rupture
- Potential for malpositioned graft
- Maintaining tension against screw movement is a difficult aspect of ACL reconstruction
ASNIS Twist-Lock Screw takes a novel turn at a solution
- Single 90° turn locks graft into position
- Allows controlled positioning and tensioning of graft during fixation
- Reduced risk of graft damage and dislocation during insertion
- Offers surgeons a stable, precise, low-friction, low-stress fixation approach with no instrumentation changeouts
- Streamline ACL fixation procedures
Kit includes
- Integrated delivery system with twist-lock screw, cap, cap impactor, and t-handle driver
- Dilator tools also availabale
Designed to allow surgeon to position and place screw with a single 90 degree turn.
Histology
Reduced tissue laceration inherently results in decreased cellular trauma at implantation site.
Human cadaver tibia with ASNIS twist-lock screw and cap, flat side
Human cadaver tibia with ASNIS twist-lock screw and cap, thread side
T=tendon graft, C=cap, S=screw, B=pre-existing tibial bone
Non-GLP Histopathology of Asnis Twist Lock Screw Cadaver Usability Protocol for ACL Repair, Alizée Pathology, LLC , 2021
Initial Market
ACL
Follow-On Markets
Shoulder, foot/ankle, wrist, elbow
Intellectual Property
2 US Patents granted US10,238,440B2 / US11,026,731
Regulatory Path
FDA Class II Device/510(k) Code HWC EU Class IIb Implantable
Testing
Preclinical testing for BTB and soft tissue currently underway
Team
Driven by a partnership with clinicians, top health systems, innovator of the cannulated screw, and one of the top professional sports orthopedic surgeons in the US
Another innovation by
EMPOWERING IDEAS, ENABLING CHANGE
i360medical an innovation enabler and hub that has the expertise necessary to take new healthcare ideas and medical technologies to market
Bob Mitchell
Chief Commercial Officer, Chair Commercial Advisory Board
Rachel Knutton
VP of Marketing
ASNIS TLS Surgeon Inventors
Stanley E. Asnis, MD
- Chief, Adult Joint Reconstruction, North Shore University Hospital
- Inventor of first cannulated screw fixation system for hip fractures
- Holds 13 U.S. and International patents for orthopaedic devices
Peter D. Asnis, MD
- Chief, Sports Medicine Service, Massachusetts General Hospital
- Head Team Physician, Boston Bruins; Head Team Orthopaedic Surgeon, Boston Red Sox; Team Physician, New England Patriots