A catheter tip that may detach — three in ten device records also travel abroad (Harmony)

1What Harmony and its delivery catheter are

Harmony is known as a transcatheter pulmonary valve (TPV) system — a way of placing a pulmonary valve using a catheter rather than open surgery. The delivery catheter system is not the valve itself but the instrument used to carry the valve through the vessels to the target position and deploy it.

In heart valve therapy, how safely the valve is delivered matters as much as the valve's own performance, which makes the delivery instrument a component tied directly to the outcome.

2The conditions under which the tip can detach

The defect here is that devices containing inner shaft assemblies from specific manufacturing lots may have an increased potential for the distal tip to detach from the delivery system. FDA records describe this as occurring under certain procedural or anatomical conditions — that is, not in every case, but where factors such as the curvature of the route or an individual patient's vascular and cardiac anatomy combine.

3Why this is the most serious class

If part of an instrument separates inside the body, an additional procedure may be needed to retrieve it, which is why the FDA assigned its most serious category, Class I. At 1,881 units the quantity is not large for a device recall; given the field in which Harmony is used, the affected patient population is correspondingly narrow, so the weight per case is high.

4Why it matters

5Three in ten device records also travel abroad

Of the 779 device records this site holds as of 2026-09-01, 236 list a country or region outside the United States among the places distributed.

That is three in ten. The same model numbers cross borders, so a U.S. recall record can bear directly on a hospital elsewhere. Notification runs under each country's own system, however, so a Japanese destination in the U.S. record does not mean the same notice appeared there.