Spinal Stabilization Technologies, LLC products

The SST PerQdisc Nucleus Replacement System is intended to replace the nucleus pulposus of the intervertebral disc in the L1-S1 spinal region in patients with single-level discogenic pain. The patient may have single or multi-level degenerative disc changes but the discogenic pain must be limited to a single level. The patient must be skeletally mature, at least 21 years of age, presenting with moderate to severe low back pain (with or without leg pain) that is unresponsive to non-surgical conservative treatments. The patient should not have a history of prior lumbar spine surgery. The patient should have a minimum disc height of 6 mm. 

The PerQdisc is designed for use using a lateral traspsoas or retroperitoneal (i.e., anterolateral) surgical approach to access disc space. Access through the annulus can be achieved using the PerQdisc™ Disc Access System (Figure 3). Once annular access is achieved, a nuclectomy (removal of nucleus material) is performed through the disc access using various tools to remove most of the nucleus material.

The PerQdisc Implant Delivery Device (Figure 4) is then inserted through the Access Cannula into the enucleated disc space. Contrast is injected into the inner chamber of the implant. This aids in visualization as well as provides real-time monitoring of fill pressure. The outer chamber of the implant is then filled under pressure control with a curable, polymer containing barium sulfate. The polymer cures in situ within 10 minutes at body temperature. Once cured, the contrast media is removed from the inner chamber of the implant and the delivery system is withdrawn.