Optical navigation system for surgeries

Abstract

The invention discloses an optical navigation system for surgeries, and relates to the field of medical equipment. The optical navigation system for the surgeries works in an visible light environment and comprises a fluorescence excitation light source, a visible light image collecting device, a near-infrared image collecting device, an image processing device and a display screen, the fluorescence excitation light source is capable of emitting invisible near-infrared light, the visible light image collecting device is capable of collecting visible light images formed after light emitted by a surgery illuminating device is reflected by a subject in a detect area, and the near-infrared image collecting device is capable of collecting near-infrared fluorescent images formed after light emitted by the fluorescence excitation light source is motivated by the subject in the detection area, wherein the wave length of the near-infrared fluorescent images is larger than 850 nm; the display screen is installed on a pair of goggles or a head-mounted support and used for displaying images processed by the image processing device. According to the device, fluorescence imaging is achieved in the visible light environment, the fluorescent images with high resolution and deep tissue are obtained, and imaging is clear, so that a doctor can learn about the real-time fluorescence imaging situations at any time without breaking surgical operation during the surgeries.

Description

technical field [0001] The invention belongs to the field of medical equipment, and relates to an optical surgical navigation system used in surgical operations to realize auxiliary imaging. Background technique [0002] Surgeons need to rely on visual judgment of physiological and pathological tissue structures during surgery. Existing optical aids help doctors make more accurate judgments with the help of fluorescence. [0003] Such as figure 1 As shown, an existing surgical auxiliary imaging device based on a floor stand 5' uses a near-infrared optical camera 3' (EMCCD) to image near-infrared fluorescence at a wavelength of about 800nm, and the camera is connected with a visible light camera 2' and a fluorescence excitation light source 1' are jointly fixed on the mechanical arm 6' which can be flexibly adjusted in position, and the mechanical arm 6' is installed on the floor support 5', and the generated images are displayed on the display screen 4' connected to the flo...

AI Technical Summary

Problems solved by technology

However, during the operation, the doctor needs to adjust the position of the mechanical arm 6' in advance, adjust the fluorescence excitation light source 1' to a position where it can irradiate the fluorescent substance on the fluorescent tissue and excite the fluorescence, and set the visible light camera 2' and near-infrared optical Only when the camera 3' is adjusted to the position where the fluorescent tissue can be photographed can the operation be performed normally, which is extremely inconvenient to use

In addition, since the fluorescence excitation light source 1' excites the fluorescent substance only to produce near-infrared fluorescence with a short wavelength of about 800nm, when performing fluorescence imaging, it is necessary to operate in a darkroom environment to ensure the imaging effect, which is not conducive to the operation. Continuous operation, and short-wavelength fluorescence has poor penetration into deeper fluorescent tissues, resulting in blurred imaging

Furthermore, since the fluorescence image of the imaging device is finally displayed on the display screen 4' of the floor stand 5', the doctor needs to raise his head to see the fluorescence image on the floor stand 5' during the operation, and it is necessary to interrupt the operation and change the body position. , switch the light source, further increase the inconvenience of use, and at the same time, it is impossible to know the real-time fluorescence imaging situation at any time, which will easily delay the timeliness of surgical operation and reduce the accuracy of surgical operation

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