I guess if Hank needs the ad revenue (which I'm sure he does) I have no problem with valve manufacturers advertising. I would prefer the other manufacturers to have ads as well - let the patient (customer) do the research of all the valves and then weigh that info with the doctor's opinion in order to make an informed decision.
As long as we're on the subject of ads, Hank might as well look to some of the other products useful to pre/post surgery. How about ads for testing equipment, medical id bracelets, guided imagery, bras for the women, scar treatment products, and such? Maybe someone could recreate (or buy the rights to) Al's dosing chart. The possibilities are out there and could possibly be beneficial to the patient/consumer.
But, just one ad... make it look like an endorsement rather than an ad.