they both use pyrolytic carbon ... simply read their product literature. However for your convenience:. Please confirm that the On-X and SJM are made of the same carbon.
being unfamiliar with them in the flesh (so to speak) is it the opening angle? (just no or bingo, don't tell, I'm keen to guess or research this)which is what sets the SJM apart from all the rest
Looks like the SJM is intentionally at 85% opening vs the On-X at 90%. Why did SJM choose 85%?Well .... no, opening angles are similar for all bi-leaflet valves. 2nd guess, are you referring to inflow (proximal) or outflow (distal) ?
Pellicle - you are definitely the Data King! Thanks!Hey Uni
you will note that I've pretty much said this many times over the years and in many posts.
they both use pyrolytic carbon ... simply read their product literature. However for your convenience:
Bileaflet valves have two semicircular pyrolytic carbon discs attached to the valve ring by two small midline hinges. St. Jude Medical, CarboMedics, Advancing the Standard ATS bileaflet and the On-X are the prototypes of this group
To assess abrasive wear of mechanical valve prostheses containing pyrolytic carbon components, we recovered at necropsy or surgery and analyzed by scanning electron microscopy and surface profilometry eight prostheses. Seven were implanted for 30-85 (mean 50 months. Valves included DeBakey...pubmed.ncbi.nlm.nih.gov
To assess abrasive wear of mechanical valve prostheses containing pyrolytic carbon components... All carbon occluders had undetectable wear. ... This study suggests that clinically important abrasive wear will not be a late complication of cardiac valve replacement with pyrolytic carbon prostheses.
Lastly to repost what I have posted frequently in the past:
Pyrolytic carbon is man-made and is not thought to be found in nature ...It is used nonreinforced for missile nose cones and ablative (boiloff-cooled) rocket motors. Prosthetic heart valves. Radial head prosthesis.
Yes agree..On-x is better than other options. US FDA agree with it..doesn't matter if some people don't agree here..they are not God..yes its democracy no hitlership.Also, it has an improved Design, times are always changing, and for those that do not want to go to a hospital for another pre-planned surgery like me , it was the best option, TAVs are all possibilities, but not certainty depends on what is the environment around valve #1 and tissues around it, and size, a valve inside a valve, has limitations how many things you can put inside of it. This is "my" perspective, other people have their perspective, after all we do not live in Communist China ruled by CCP...