The mixed venous oxygen saturation (SvO2) inside the pulmonary artery, which reflects the blood exit from all tissue beds, can be measured in vivo using fiber optic catheters. A catheter tip oximeter with an incandescent light source, optical fibers inside the cardiac catheter, a light detecting device, and a processing unit are described.
The other half of the optical fibers directs backscattered (reflected) light to the detecting unit while the first half of the fibers direct light to the blood at the catheter’s tip.
The Global fiber-optic catheter oximeters market accounted for $XX Billion in 2022 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2023 to 2030.
The current invention pertains to a fiber optic catheter pulse oximeter, more specifically to the utilization of the oximeter in determining the oxygen saturation of brain tissue. The cranial cavity entirely encloses the brain, making it challenging to deploy a physical monitoring method.
Although commercially available, near-infrared spectroscopy (NIRS) has not yet received universal recognition as a trustworthy marker of brain oxygenation. This technique forecasts the oxygen saturation of the entire vein in the area of the brain tissue.
As much as the infrared light is dimmed, this approach depends on being able to partially penetrate the skull. A multi-wavelength source of light is used to transfer light to a sensor, often at the front of the device, using fiber optic bundles.
The intrusion component of the device has a small diameter and a very flexible intrusion portion due to the use of an optical fiber that transfers light to or from an in-vivo measurement site. Thus, this device makes it easier to detect oxygenation in regions that are challenging to reach with other devices, such as the oesophagus, trachea, colon, and brain surface regions.
Using optical fibers reduces the risk of patient burns and makes the device less invasive by allowing electrical and light sources to be kept outside the patient’s body and away from patient tissue. Preferably, spacer optical fibers are inserted between the transmission optical fibers to act as a physical barrier between the optical fibers.
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