FDA Device Recalls
FDA classifies device recalls as Class I (death/serious injury risk), Class II (temporary/reversible), Class III (unlikely to harm). Recall database is authoritative.
Due diligence
Serial-range-specific. A Class II recall may or may not affect a given unit. Check by serial before purchase. Sellers should disclose; verify independently at accessdata.fda.gov/scripts/cdrh/cfdocs/cfRES/res.cfm.