Endoscope type laser speckle blood flow imaging probe

Abstract

The invention discloses an endoscope type laser speckle blood flow imaging probe which comprises the components of an ocular lens, a focusing part, a flexible pipe part, a head end part, a joint adapter, a cold light source interface, a flexible pipe, an image transmitting optical fiber, light transmitting optical fibers, a quartz optical fiber protecting layer, a quartz optical fiber, a quartz optical fiber epitaxial part and a small lens. According to the endoscope type laser speckle blood flow imaging probe, a laser speckle blood flow imaging system is combined with an endoscope, thereby realizing blood flow detection of intracavitary organs such as an alimentary canal. The number of the light transmitting optical fibers is increased in the probe. Four light transmitting optical fiberssurround the image transmitting fiber, thereby increasing a light receiving area of a tissue, realizing more uniform and sufficient light and effectively preventing light spots. According to the endoscope type laser speckle blood flow imaging probe, laser speckle imaging is combined with spectrum detection; a fiber laser device is used for supplying a laser source and a broadband light source; theendoscope type laser speckle blood flow imaging probe realizes simultaneous detection of the blood flow and the blood oxygen of the intracavitary organs; and in designing of the probe, the position of the image transmitting optical fiber is properly adjusted, thereby overcoming defects in detection by an existing endoscope, and realizing wall-adhering measurement of the blood flow.

Description

technical field [0001] The invention relates to the technical field of cavity endoscopy, in particular to an endoscopic laser speckle blood flow imaging probe. Background technique [0002] Blood flow and blood oxygen (SO 2 ) are two key parameters related to physiology. Measuring these parameters is important for monitoring, evaluating and understanding numerous diseases. Traditional methods of measuring blood flow are based purely on Doppler shift, OCT, ultrasound Doppler, angiography, and laser speckle contrast imaging (LASCA), which cannot measure blood oxygen saturation. SO 2 The detection of oxyhemoglobin and deoxyhemoglobin is usually based on the spectral detection method that has different absorption coefficients under different wavelengths of light, but pure multispectral imaging cannot provide blood flow velocity information. [0003] Compared with other existing blood flow monitoring methods, laser speckle blood flow imaging technology has the advantages of r...

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Problems solved by technology

However, limited by the depth of light penetration, these techniques are only suitable for measuring blood flow in the cortex o

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