The US Food and Drug Administration (FDA) has permitted marketing of two devices that provide real-time location of parathyroid tissue during surgical procedures such as thyroidectomy (surgery to remove all or part of the thyroid) and parathyroidectomy (surgery to remove one or more parathyroid glands).
Disorders in the parathyroid tissue, which is tissue that borders the thyroid gland, are usually treated by surgeries to remove part of the thyroid gland or parathyroid tissue. Hyperparathyroidism, or the overproduction of parathyroid hormone, is the most common of parathyroid disorders and is diagnosed in approximately 100,000 Americans each year. For surgeons treating hyperparathyroidism or other disorders, parathyroid tissue can be visually difficult to locate and distinguish from nearby tissues during a surgery.
The Fluobeam 800 Clinic Imaging Device is used to assist in the imaging of parathyroid glands and can be used as a companion method to assist surgeons in locating parathyroid tissue visually during surgery. Parathyroid tissue emits a fluorescent glow when exposed to the device’s light source, avoiding the need for a contrast agent. The device was previously cleared as an imaging system used to capture and view fluorescent images for the visual assessment of blood flow as an adjunctive method for the evaluation of tissue perfusion.
The Parathyroid Detection PTeye System aids in detecting parathyroid tissue during surgery by using a probe that emits fluorescence light. Tissue detection is based on how the parathyroid tissue reacts to the fluorescent light. When parathyroid tissue is detected, the system provides an audio and visual display to indicate its presence.
The Fluobeam 800 and the PTeye were reviewed separately but concurrently under the FDA’s De Novo premarket review pathway, a regulatory pathway for some low- to moderate-risk devices that are novel and for which there is no prior legally marketed device.
The FDA granted marketing authorization of The Fluobeam 800 Clinic Imaging Device to Fluoptics and Parathyroid Detection PTeye System to AiBiomed.