A patient's head cap is marked to pinpoint an area of the brain to use the transcranial magnetic stimulation at the VA Palo Alto Health Care System on Wednesday, Nov. 7, 2018, Palo Alto, Calif. The device, which claims to treat depression by beaming rapid-fire bursts of magnetic energy into the brain’s prefrontal cortex, was approved by the Food and Drug Administration in October 2008, despite receiving a negative review by federal health advisers. (AP Photo/Tony Avelar)
A patient's head cap is marked to pinpoint an area of the brain to use the transcranial magnetic stimulation at the VA Palo Alto Health Care System on Wednesday, Nov. 7, 2018, Palo Alto, Calif. The device, which claims to treat depression by beaming rapid-fire bursts of magnetic energy into the brain’s prefrontal cortex, was approved by the Food and Drug Administration in October 2008, despite receiving a negative review by federal health advisers. (AP Photo/Tony Avelar) Credit: Tony Avelar

Dr. Jeffrey Shuren was adamant: The United States would never cut corners to fast-track the approval of medical devices.

“We don’t use our people as guinea pigs in the U.S.,” Shuren said, holding firm as the new director of the U.S. Food and Drug Administration’s medical devices division.

Again and again in 2011 – four times in all – Shuren was summoned before Congress. Lawmakers accused the agency of being too slow and too demanding in reviewing new devices like heart valves and spinal implants, driving U.S. manufacturers overseas where products faced less rigorous review. Each time, he pushed back.

And yet the next year, Shuren and his team adopted an approach that surprised even some of his closest colleagues: The FDA would strive to be “first in the world” to approve devices it considered important to public health.

The agency’s shift mirrored the talking points of the $400 billion medical device industry – a lobbying behemoth on Capitol Hill – and ushered in a series of changes that critics say have allowed manufacturers to seek regulatory approval for high-risk devices using smaller, shorter, less rigorous studies that provide less certainty of safety and effectiveness.

Under Shuren, annual new device approvals have more than tripled, while warnings letters to device manufacturers about product safety and quality issues have fallen roughly 80 percent, an Associated Press investigation found.

The assortment of medical devices now on the market includes spinal rods that can leave metal shards in children and a nerve-zapping obesity implant that may not work for many patients.

The cheaper and faster medical device approvals began despite multiple, high-profile safety problems involving pelvic mesh, hip replacements and other implants.

An AP analysis of FDA data shows that since 2012, tens of thousands of injury and death reports have been filed in connection with devices that were cleared through a streamlined pathway that minimizes clinical trial testing. The FDA’s database for reporting device problems often includes incomplete, unverified information submitted by manufacturers, physicians, lawyers and patients. Because of these limitations, it’s often unclear whether a device played any role in an injury or death.

In response to questions from the AP, the FDA said its “first in the world” goal was not about a competition with other countries but rather was adopted as part of a strategy that also focused on quickly identifying defective products to ensure U.S. devices “remain safe, effective and of high quality.”

The agency said it has focused on taking steps to reduce the time and cost of device development “that do not compromise our standard of reasonable assurance of safety and effectiveness.”

Warning letters have declined, the FDA said, because the agency is using a new approach that involves fewer warnings but more inspections to oversee companies that violate its rules.

Last week, the FDA announced a new goal to be “consistently first” among the world’s regulatory agencies to identify and address medical device safety issues.

The agency also rejected the idea that Shuren’s approach to regulation has changed over time, saying he has worked for years to improve patient safety.

Still, some current and former FDA officials are worried about the ambition to be first on approvals. They include Dr. Peter Lurie, who calls the agency’s new direction “an invitation to a race to the bottom for scientific standards” seemingly prompted by industry pressure. Lurie held senior posts at FDA from 2009 to 2017 and now heads the nonprofit Center for Science in the Public Interest.