4.7 Article

A Wireless, Battery-Free Embedded Sensor for Monitoring Tension on a Suture Anchor

Journal

IEEE SENSORS JOURNAL
Volume 22, Issue 2, Pages 1173-1179

Publisher

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSEN.2021.3131299

Keywords

Sensors; Strain measurement; Monitoring; Springs; Coils; Resistance; Inductors; Suture anchor; inductive-capacitive-resistive sensor; wireless strain sensor; tendon repair

Funding

  1. University of Oregon Office of the Vice President for Research and Innovation (OVPRI) Innovation Fund-Translational Research Grants

Ask authors/readers for more resources

A passively powered wireless sensor based on an LCR sensor is developed to measure tensile stress at suture anchors for soft tissue repair. The sensor is embedded within the suture anchor and consists of a strain gauge and a loop connector. The advantages of this sensor include small size, wireless detection, and battery-free operation, making it suitable for both short- and long-term implants.
A passively powered wireless sensor based on an inductive-capacitive-resistive (LCR) sensor was developed to measure tensile stress at suture anchors used to repair soft tissue injuries such as ligament and tendon tears. The sensor, which is completely embedded within the suture anchor, consists of a strain gauge mounted on a substrate with a loop connector so a suture can pass through. When the suture experiences a tensile stress, it pulls at the loop connector and the strain gauge, allowing measurement of tensile stress at the suture. In this study, sensors of different designs were fabricated and characterized ex vivo to determine their force sensing capabilities. The effects of sensor placement and orientation on accuracy were also characterized. The LCR suture anchor sensor can be used to assess the quality of soft tissue treatments, such as rotator cuff repairs, as well as to detect failure of the implant post-surgery. The advantages of this sensor are its small size, wireless detection, and battery-free operation, making it ideal for use with both short- and long-term implants.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.7
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available