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FDA approves 3D-printed airway stents developed by Cleveland Clinic doctor

Press releases may be edited for formatting or style | January 14, 2020 3D Printing Cardiology
The U.S. Food and Drug Administration (FDA) has cleared patient-specific airway stents developed by Cleveland Clinic physician Tom Gildea, M.D.

The stents are used to keep open the airways of patients with serious breathing disorders, such as those caused by tumors, inflammation, trauma or other masses. Until now, the patient-specific devices were being implanted under FDA’s compassionate use program, which allows patients who have failed all available forms of treatment to receive investigational ones not yet available to the public.

Standard airway stents come in a limited number of sizes and shapes and are generally designed for larger airways. However, no two patient anatomies are alike, making it difficult to get a perfect fit, especially for those with complex conditions. Even in parts of the airways that are easily accessible, ill-fitting standard stents can result in stent kinking and bending as well as airway complications such as growth of new tissue, mucus impaction and tissue death.
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The patient-specific stents developed by Dr. Gildea and his engineering team are designed using CT scans and proprietary 3D visualization software. The molds for the stents are then printed using a 3D printer and injected with medical-grade silicone. This process allows them to perfectly fit a patient’s anatomy.

“Breathing is something many people take for granted, but for many of these patients, every breath can be a struggle. It’s been gratifying to see patients receiving the customized stents feeling relief right away.” said Dr. Gildea, section head of bronchoscopy at Cleveland Clinic. “We are excited to be able to bring this technology to more patients across the country and grateful for the patients and donors who have worked with us to help pioneer this technology.”

Another advantage of the patient-specific silicone stents is they have the potential to be more tolerable than traditional silicone stents, which, in certain patients, may have to be frequently changed or cleaned due to problems from a poor fit. In studies, the patient-specific stents lasted, on average, about a year versus 90 days for stock stents. Furthermore, the patient-specific stents exhibited shorter procedure times and improved patient-reported symptoms, leading to a reduced need for stent changes and modifications.

An example of a patient-specific airway stent developed at Cleveland Clinic.

It’s estimated that about 30,000 airway stents will be implanted in the U.S. in 2020.

Patient-specific products manufactured with 3D printing, including the airway stents, were named as one of the top 10 innovations at Cleveland Clinic’s annual Medical Innovations Summit in 2018. Dr. Gildea was also the recipient of the Outstanding Innovation in Medical Device award at the 2018 annual Inventor Awards Reception held by Cleveland Clinic Innovations.

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