- Available Technology
Annular repair, Recurrent herniation, Discectomy, Biomedical, Mechanical Systems
These delivery and attachment systems are designed for more efficient employment of a repair device for recurrent herniation. Previous methods involve placement of the device either in or over the defect and then securing the patch/plug in place using an anchor constructed of a T-bar, suture, or the combination of the two. In contrast, this method applies the sutures/anchors first before being used to guide and secure the device into place. This technique employs mechanisms that can securely position the device, allowing natural tissue healing to occur. One of the delivery systems contains a cannula with multiple flexible arms that can attach to the annulus fibrosus repair patch (AFRP) and deliver it to the herniation site. The flexibility of the AFRP and the arms of the delivery device allow these components to be compressed and loaded within the cannula. Once at the desired anatomic location within or outside of the herniated IVD, the delivery system can be activated. The flexible arms with the attached AFRP are then deployed outside of the cannula, which allows for the expansion of the AFRP and its subsequent mechanical attachment to the IVD. There is additionally an AFRP that has a connected plug, which can be used in conjunction with the patch and attachment mechanisms to fill the void space in the inner annular region that typically remains following herniation. Also, there is a strut-style AFRP that is expandable so that the AFRP can be delivered in a minimally invasive fashion. Once in place, it can be expanded and held in this position while anchoring it to the interior aspects of the IVD. This includes using an anchor system to attach and secure the AFRP into the anterolateral or lateral wall of the native annulus fibrosus, where more healthy tissue can be found to support anchoring.
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