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The Mi-CHORD System is indicated for the replacement of adult mitral chordae tendineae with the patient on cardiopulmonary bypass, with the heart either arrested or fibrillating, and the surgical field under direct visualization. Direct visualization, in this context, requires that the surgeon is able to see the heart and target tissues in a bloodless field, with or without assistance from an operating telescope or videoscopy.

The Mi-CHORD™ System, shown in Figure 1, is a sterile, single use system, including the Mi-STITCH™ suturing device with its loaded LS-5™ expanded polytetrafluoro-ethylene (ePTFE) suture (Figure 2) and the Mi-KNOT™ device with its loaded Mi-KNOT™ titanium fastener (Figure 3).