| 摘要 |
The intervertebral disc is avascular. With aging, nutrients and oxygen transporting through the endplates diminish. The disc degenerates, and pain ensues. Delivery devices are used to deliver a conduit through a pedicle or vertebral body into the intervertebral disc to re-establish the exchange of nutrients and waste between the disc and bodily circulation to slow, stop or reverse disc degeneration and relieve pain.
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