Ascending Aortic Prosthesis


On-X Ascending Aortic Prosthesis with the Vascutek Gelweave Valsalva Graft1

On-X Aortic Heart Valve with Standard sewing ring

The On-X Ascending Aortic Prosthesis with the Vascutek Gelweave Valsalva Graft
is the only valve/graft combination to offer:

  • A generous PTFE2, 3 sewing ring for ease of suturing
  • The first coated valsalva graft for optimal coronary ostia reimplantation


On-X Ascending Aortic Prosthesis

Valve Size Catalog Number Valve
Diameter (mm)
Valve Orifice Area with leaflets in Place (cm2) Sewing
Diameter1 (mm)
Graft Length (cm)
19 ONXAAP-19 17.4 2.00 27 20 11
21 ONXAAP-21 19.4 2.53 30 22 11
23 ONXAAP-23 21.4 3.13 33 24 11
25 ONXAAP-25 23.4 3.73 34 26 11
27/29 ONXAAP-27/29 23.4 3.73 36 26 11



  1. The Vascutek Gelweave ValsalvaTM Graft is a product of Vascutek, a Terumo Company
  2. Sewing ring nominal dimensions.
  3. 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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Patient Stories about the On-X Heart Valve

The On-X Heart Valve Patient Guide

For Patient, Technical, and
General Inquiries

Mark Spindler
(512) 831-6557