FDA database that detects faulty medical devices may miss warning signs

Too old and too sick for a heart transplant, Arvid Herrman was given a choice: Have a mechanical pump implanted in his heart, potentially keeping him alive for several years, or do nothing and almost certainly die within a year.

The 68-year-old Wisconsin farmer chose the pump, called a HeartMate 3 — currently the only FDA-approved device of its kind in use. Instead of extending his life, though, the device led to his death, according to a lawsuit filed in December 2020 by his daughter Jamie Edwards.

The lawsuit alleged that Herrman died because a defect in the locking mechanism of the HeartMate 3 prevented the device from sealing, causing multiple strokes and leading to a severe brain injury and multiorgan failure. Herrman “could not have anticipated the danger this defect … created for him,” the lawsuit said.

Herrman’s death was reported to a Food and Drug Administration database where the public can learn about device-related deaths, serious injuries, and malfunctions. The event was also described in the peer-reviewed Journal of Heart and Lung Transplantation.

In September 2021, Ramon Flores Sr. had the same device implanted at Methodist Hospital of San Antonio. A lawsuit his family filed in August alleges that the locking mechanism defect led to air embolism strokes. Flores died eight days after surgery, at age 76.

“How many other people is this going to happen to?” said his daughter, Alanna Flores Blanco, 52. “We never, ever were explained that the device could malfunction and this could happen.”

After the deaths of Herrman and Flores, Thoratec Corp., the device’s manufacturer, evaluated the pumps involved. In both cases, Thoratec, a subsidiary of Abbott Laboratories, confirmed a bent locking arm. But “a direct correlation” between the HeartMate 3 and the deaths “could not conclusively be established,” the manufacturer reported to the FDA.

Abbott did not respond to questions about the deaths or the alleged defects. The manufacturer denied liability in both cases. It settled Herrman’s lawsuit this fall, and the Flores case is ongoing.

The men’s deaths are among more than 4,500 reports since August 2017 in which the HeartMate 3 may have caused or contributed to a patient’s death, according to a KFF Health News analysis of the FDA’s database of medical device incidents, known as the Manufacturer and User Facility Device Experience, or MAUDE. Hospitals, doctors, and others report device-related deaths, serious injuries, and malfunctions to manufacturers, who are required to investigate and report cases to the FDA.

In nearly 90% of those 4,500-plus reports, Thoratec said it found no problem with the device or how it was used, according to a KFF Health News review of the FDA database. CBS News