Smith+Nephew Developed Novel CORI Digital Tensioner Device
Smith+Nephew discovered the CORI Digital Tensioner, a purpose-built device aimed at measuring ligament tension in the knee before bone cutting during total knee arthroplasty.
The CORI Digital Tensioner aims to make surgical planning more objective compared to other available alternatives. This device is designed to help surgeons assess joint laxity in the patient's natural knee and achieve optimal ligament tensioning, thereby reducing variability in knee balancing during surgery.
The CORI Digital Tensioner, as described, offers several advancements and features that aim to address challenges faced by surgeons in robotic-assisted surgery:
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Ligament Assessment: It is the first and only ligament tensioning device in robotic-assisted surgery that allows surgeons to evaluate joint laxity in the patient's natural knee before the bone resection step. This assessment can provide valuable information for surgical planning and help achieve optimal ligament tensioning during the procedure.
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Automatic Gap Data Collection: The CORI Digital Tensioner automatically collects gap data at a specified force throughout the full range of knee movement. This feature can provide surgeons with objective measurements and feedback, enabling them to make informed decisions during the surgery.
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Surgeon-defined Target Force: The device functions as a true tensioning device and incorporates a software interface that allows surgeons to select their preferred target force value. Surgeons can choose from three options: 50±10N, 100±10N, or 150±10N. This customisation feature provides flexibility and enables surgeons to align the tensioning force with their preferred surgical technique.
By quantifying the tension in ligaments, the CORI Digital Tensioner can potentially assist surgeons in achieving better outcomes and improving the overall functionality and stability of the knee joint post-surgery.
