Mitral Heart Valve with Conform-X Sewing Ring

Mitral Heart Valve with Conform-X Sewing Ring

On-X Prosthetic Mitral Heart Valve with Conform-X Sewing Ring 2


Valve Size Catalog Number Tissue Annulus Diameter (mm) Internal Diameter (mm) Sewing Ring Diameter1 (mm) Overall Height (mm) Orifice Height (mm) Internal Orifice Area (cm2)
25/33 ONXMC-25/33 25-33 23.4 39 17.8 14.2 4.11



  1. Sewing ring nominal dimensions.
  2. All On-X valve sewing rings are made of polytetrafluoroethylene (PTFE).

On-X aortic and mitral valves are FDA approved. Not all On-X valve models are available in all markets.
CAUTION: Federal law restricts this device to sale by or on the order of a physician. Refer to the Instructions for Use that accompany each valve for indications, contraindications, warnings, precautions and possible complications.

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On-X Heart Valves Instructions For Use (IFU)

The On-X Heart Valve Patient Guide

For Patient, Technical, and
General Inquiries

Mark Spindler
(512) 831-6557