Check out this link (found by Google Search)
http://www.medtronic.com/your-healt...ucts/hall-easy-fit-mechanical-valve/index.htm
The only Medtronic-Hall Tilting Disk Valve that I am familiar with is fairly old and not used very often anymore to the best of my (non-professional) knowledge.
'AL Capshaw'
EDIT -
Here is my post from 2009 "St Jude" Thread listing the overall 'event rates' for the Major Mechanical Valve Manufacturers. We have members who have valves from all 4 manufacturers who are doing well while properly anticoagulated.
The manufacturers argue all argue about certain design features of their valves. Personally, I'm impressed with the advancements offered by the On-X valve which was designed to lower the already low 'event rates' of mechanical valves. To my (engineering / non-medical-professional) mind, the BIG difference comes at those times when it is necessary to go OFF anti-coagulation for invasive procedures.
QUOTE
A few years ago, On-X sent me an 'Information Package' which included a pair of tables entitled "Morbid Event Rates Comparison" for both the Aortic and Mitral positions with footnotes indicating the source of the data for each company which included PMA (something about Safety and Effectiveness) Summaries (ATS and CMI) and FDA submissions.
The combined rates in (% per pt-year) for Thromboembolism, Thrombosis, and Hemorrhage for the
Aortic Position were
On-X = 2.14 % per pt-year
SJM = 3.90 St. Jude Medical
CMI = 2.96 Carbomedics
ATS = 4.04 ATS
MH = 2.50 Medtronic Hall (I believe that is a single leaflet valve)
Mitral Position
On-X = 1.86 % per pt-year
SJM = 3.34
CMI = 4.44
ATS = 5.07
MH = 4.30
I left off the breakdowns by categories because I'm not about to sit here and re-type all that data. Note that other factors such as Hemolysis (blood cell damage) and Pannus Tissue Growth are not included in the above statistics.
The complete charts are available to ANYONE who asks for them. Just call or e-mail On-X and they will send you whatever information you request. Contact information is on their website
www.onxvalves.com or 888-339-8000.
They have recently published another set of Bar Graphs which also include several tissue valves (which I find a little hard to interpret - too much information in too little space... give me the numbers in a spread sheet format please).
'AL Capshaw'
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