Medtronic and its Covidien unit have entered the first U.S. jury trial within a multidistrict litigation (MDL). This trial consolidates thousands of lawsuits from patients alleging injuries from defective hernia-repair mesh implants.

The proceedings began in Massachusetts federal court. This bellwether case will test legal arguments and jury reactions for thousands of pending claims.

The specific case focuses on claims that the Symbotex mesh was defective. Plaintiffs allege Medtronic failed to warn doctors that the mesh's protective barrier can degrade prematurely.

The trial's outcome will likely dictate settlement negotiations for the remaining lawsuits against the company.