Medtronic clinical executive Ruchir Sehra says CDRH's newfound rigor in the postmarket area is evident in its approach to the firm's post-approval study of the X-Stop spinal implant.
"They seem to be encouraging more post-approval follow-up," said Sehra, VP-clinical and research of Medtronic's spinal and biologics business in Sunnyvale, Calif.
Sehra says the agency called for two post-approval follow-up studies on X-Stop, which received PMA approval in November 2005 ("1The Gray Sheet" Nov. 28, 2005, p. 6). The implant offers a non-fusion option for alleviating the painful symptoms of lumbar spinal stenosis. Inserted between the spinous processes of symptomatic discs, it "distracts" the space around the nerves, preventing pinching.
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