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Shows & Panels
Robot hot among surgeons but FDA taking fresh look
Thursday - 4/11/2013, 2:16pm EDT
AP Medical Writer
CHICAGO (AP) -- The biggest thing in operating rooms these days is a million-dollar, multi-armed robot named da Vinci, used in nearly 400,000 surgeries nationwide last year -- triple the number just four years earlier.
But now the high-tech helper is under scrutiny over reports of problems, including several deaths that may be linked with it, and the high cost of using the robotic system.
There also have been a few disturbing, freak incidents: a robotic hand that wouldn't let go of tissue grasped during surgery and a robotic arm hitting a patient in the face as she lay on the operating table.
Is it time to curb the robot enthusiasm?
Some doctors say yes, concerned that the "wow" factor and heavy marketing are behind the boost in use. They argue that there is not enough robust research showing that robotic surgery is at least as good or better than conventional surgeries.
Many U.S. hospitals promote robotic surgery in patient brochures, online and even on highway billboards. Their aim is partly to attract business that helps pay for the costly robot.
The da Vinci is used for operations that include removing prostates, gallbladders and wombs, repairing heart valves, shrinking stomachs and transplanting organs. Its use has grown worldwide, but the system is most popular in the United States.
"We are at the tip of the iceberg. What we thought was impossible 10 years ago is now commonplace," said Dr. Michael Stifelman, robotic surgery chief at New York University's Langone Medical Center.
For surgeons, who control the robot while sitting at a computer screen, these operations can be less tiring. Plus robot hands don't shake. Advocates say patients sometimes have less bleeding and often are sent home sooner than with conventional laparoscopic surgeries and operations involving large incisions.
But the Food and Drug Administration is looking into a spike in reported problems. Earlier this year, the FDA began surveying surgeons using the robotic system. The agency conducts such surveys of device use routinely, but FDA spokeswoman Synim Rivers said the reason for it now "is the increase in number of reports received" about da Vinci.
Reports filed since early last year include at least five deaths.
Whether there truly are more problems lately is uncertain. Rivers said she couldn't quantify the increase and that it may simply reflect more awareness among doctors and hospitals. Doctors aren't required to report such things; device makers and hospitals are.
It could also reflect wider use. Last year there were 367,000 robot-assisted surgeries versus 114,000 in 2008, according to da Vinci's maker, Intuitive Surgical Inc. of Sunnyvale, Calif.
Da Vinci is the company's only product, and it's the only robotic system cleared for soft-tissue surgery by the FDA. Other robotic devices are approved for neurosurgery and orthopedics, among other things.
A search for the company's name in an FDA medical device database of reported problems brings up 500 events since Jan. 1, 2012. Many of those came from Intuitive Surgical. The reports include incidents that happened several years ago and some are duplicates. There's also no proof any of the problems were caused by the robot, and many didn't injure patients. Reports filed this year include:
-- A woman who died during a 2012 hysterectomy when the surgeon-controlled robot accidentally nicked a blood vessel.
-- A Chicago man who died in 2007 after spleen surgery.
-- A New York man whose colon was allegedly perforated during prostate surgery. Da Vinci's maker filed that report after seeing a newspaper article about it and said the doctor's office declined to provide additional information.
-- A robotic arm that wouldn't let go of tissue grasped during colorectal surgery on Jan. 14. "We had to do a total system shutdown to get the grasper to open its jaws," said the report filed by the hospital. The report said the patient was not injured.
-- A robotic arm hit a patient in the face during a hysterectomy. Intuitive Surgical filed the report and said it's not known if the patient was injured but that the surgeon decided to switch to an open, more invasive operation instead.
Intuitive Surgical filed all but one of those reports.
Complications can occur with any type of surgery, and so far it's unclear if they are more common in robotic operations. That's part of what the FDA is trying to find out.
Intuitive Surgical disputes there's been a true increase in problems and says the rise reflects a change it made last year in the way it reports incidents.