Bone Suture Anchor with Improved Tension Control for Soft Tissue Repairs (2016-047)

Market Overview:

This bone suture anchor utilizes a barbed external geometry and internal plunger, allowing surgeons more tension control. The global soft tissue repair market accounted for $10.3 billion in 2014 and is expected to reach $14.7 billion in 2019 due to increased healthcare expenditure and sports related injuries requiring arthroscopic surgery. When performing a rotator cuff or other arthroscopic surgeries, suture anchors are used to ensure stability by attaching soft tissue to bone. While suture anchors currently exist, there is a need for a suturing anchor device that allows for greater tension control so initial tendon fixation may improve bone healing and reduce the risk of re-tears. To fill this need, Clemson researchers have developed a bone suture anchor that allow for greater tension control while improving suture slippage. The device is composed of a barbed external geometry and internal plunger, allowing for the anchor to be tapped in a pre-formed hole. The tension control mechanism can subsequently be activated for maximum tension control.


Application                                                          Stage of Development

Soft tissue repair; medical device                         Prototype



• Uses a simple design, allowing for easy refinement for multiple applications and tension control resolution

• Utilizes an internal plunger for twisting and locking device in place, allowing for proper tension control in both increasing and decreasing tension

• Compatible with all suture types, including FiberTape®


Technical Summary

The suture device is a non-absorbable, pre-loaded anchor that allows the surgeon to adjust suture tension. The suture anchor is intended to provide secure reattachment of soft tissue to bone by an orthopedic surgeon’s preferred technique. The device is sterile and intended for single use only. This device gives the surgeon the capability to uptake suture and increase tension on the system, while also having the availability to left off and release tension. The device works by using the barbed external geometry to tap the suture into a pre-formed hole in the bone. Once there, the internal plunger is used to twist and lock the suture in place and the bottom of the plunger prevents suture slippage, allowing for tension control. By rotating the plunger clockwise, the tension increase while rotating counter-clockwise decreases the tension. Due to the simple design, further development would allow for easy refinement. This design can be easily manufactured with current manufacturing processes and is ready for commercialization.


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Inventors:                Chadd Clark, Megan Hanschke, Anna Cantrell, Evan Robinson, Kelsey Baird


Patent Type:           Provisional


CURF Ref No:        2016-047

Patent Information:
Biomedical Sciences
For Information, Contact:
Chris Gesswein
Director of Licensing
Clemson University Research Foundation
Chadd Clark
Kelsey Baird
Evan Robinson
Megan Hanschke
Anna Cantrell
Jeremy Mercuri
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