RU2707828C1 - Device for photodynamic visualization for differentiation of lymphatic drainage pathways - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: invention relates to medical equipment and is intended for photodynamic imaging for differentiation of lymphatic drainage. Device comprises a first infrared radiation unit, the emitter of which is in form of a light-emitting diode, the maximum infrared radiation of which corresponds to 660 nm, SSD-camera with optical filter of the first unit, made with limitation on wave length 760 nm, recorder, unit of visible radiation and second unit of infrared radiation. Each of the units includes a recorder, an emitter, a SSD-camera with an optical filter, wherein the emitter of the visible radiation unit is in form of a ring, radiator of the second infrared radiation unit is made in the form of a light-emitting diode, the infrared radiation maximum of which is equal to 730 nm, the optical filter of the SSD-camera of the visible radiation unit is made with wavelength limitation equal to 640 nm, and the optical filter of the second chamber SSD-camera has a wavelength limit equal to 805 nm.

EFFECT: invention provides higher accuracy of lymphatic drainage differentiation.

1 cl, 1 dwg

Description

FIELD OF THE INVENTION

The invention relates to medical equipment and is intended for conducting advanced photodynamic imaging and studying the possibility of differentiating the pathways of lymphatic outflow of nearby organs.

State of the art

A device for luminescent diagnostics and photodynamic therapy is known (RU 2221605, publ. 08.27.2003), which includes a laser source with a controlled spatio-temporal distribution, an optical radiation transfer system, an exposure topology formation unit, CCD (abbr. From English. charge-coupled device) a camera with a spectrally selective optical system, a frame memory unit, a display system for information on the topology of exposure and pathology, a unit for selecting an operating mode, and also a diagnostic mode control unit.

The disadvantage of the technical solution is the impossibility of the simultaneous use of two or more fluorescent contrast agents for the differentiation of closely spaced lymph drainage pathways.

A device for fluorescence diagnostics and monitoring of photodynamic therapy (patent RU 2596869 publ. 09/10/2016), which contains a light source in the absorption band of a fluorescent marker, a light source in the emission band of a fluorescent marker. The light source in the absorption band of the fluorescent marker is made in the form of an LED with a wavelength in the range of 640-680 nm. The light source in the emission band of the fluorescent marker is made in the form of an LED with a wavelength in the range of 720-760 nm. A radiation filtering unit is installed in front of the CCD camera lens and is made in the form of an interference filter with a passband in the range of 700-800 nm. The CCD camera has an additional electrical connection to the computer. The signal processor and the switching unit of the light sources are structurally integrated into a control and data synchronization system, which is electrically connected to the light sources by a CCD camera and a computer. The computer is equipped with software for processing received images from a CCD camera and synchronizing the control system with an external therapeutic laser.

The disadvantage of the technical solution is the impossibility of the simultaneous use of two or more fluorescent contrast agents for differentiation.

SUMMARY OF THE INVENTION

The technical problem is aimed at creating an advanced photodynamic imaging device that provides precision when working with cellular, tissue and / or molecular objects.

The technical result is to increase the accuracy of diagnosis. The technical result is achieved by the fact that in the device for photodynamic imaging for differentiating the pathways of the lymphatic outflow containing the first block of infrared radiation (IR radiation), the emitter of which is made in the form of an LED, the maximum infrared radiation of which corresponds to 660 nm, an SSD camera with an optical filter of the first block performed with a wavelength limitation of 760 nm, and the recorder, in accordance with the proposed solution, an additional visible radiation unit and a second infrared radiation unit are additionally introduced, each of which includes t a recorder, emitter, an SSD camera with an optical filter, the emitter of the visible radiation unit is made in the form of a ring, the emitter of the second infrared radiation unit is made in the form of an LED, the maximum IR radiation of which is 730 nm, the optical filter of the SSD camera of the visible radiation unit is made with a wavelength limitation of 640 nm, and an optical SDS filter of the second block camera is made with a wavelength limitation of 805 nm.

The invention is illustrated in the drawing, which shows a structural diagram of a device for photodynamic imaging to differentiate the pathways of lymph outflow.

On the structural diagram are indicated:

1 - block visible radiation;

2 - the first block of infrared radiation;

3 - the second block of infrared radiation;

4 - emitter;

5 - laser LED in the form of a ring;

6 - LED;

7 - collimator;

8 - lens;

9 - optical filters;

10 - SSD camera;

11 - the registrar;

12 - hardware-software complex.

The device consists of three blocks: the visible radiation unit 1, the first and second infrared radiation units 2 and 3, each of which includes an emitter 4, an SSD camera 10 and a recorder 11. The emitter 4 of the visible radiation unit 1 is made in the form of a ring 5. Emitter 4 the first block 2 of infrared radiation is made in the form of an LED 6, the maximum infrared radiation of which corresponds to 660 nm. The emitter 4 of the second block 3 of infrared radiation is also made in the form of an LED 6, the maximum infrared radiation of which is equal to 730 nm. The optical filters 9 of the SJS of the cameras 10 of the first and second radiation units 2 and 3 are made with a wavelength limit of 760 nm and 805 nm, respectively, and the optical filters 9 of the SJS of the camera 10 of the block of visible radiation 1 are made with a wavelength limit of 640 nm.

Device operation

When the device is turned on, the white backlight of the working field is turned on. Then, the option of spectral illumination of the appropriate wavelength (for example, 660 or 780 nm) is selected depending on which drug was administered to the patient, while the white backlight turns off. The images in the corresponding spectrum are recorded. The SSD camera 10 of the visible radiation unit 1 registers the radiation of the visible spectrum. The SSD cameras 10 of the first and second IR blocks 2 and 3 record the dye fluorescence methylene blue and the dye fluorescence indocyanine green ICG, respectively. The software dyes the glow zones of various fluorescent dyes in contrasting pseudo colors. The resulting image is displayed on the display of the device or transmitted to a PC monitor.

The proposed solution allows to increase the accuracy of diagnosis due to the ability to differentiate closely spaced lymph drainage paths emanating from various anatomical regions.

Claims (1)

A device for photodynamic imaging for differentiating the pathways of the lymphatic outflow, comprising a first block of infrared radiation, the emitter of which is made in the form of an LED, the maximum infrared radiation of which corresponds to 660 nm, an SSD camera with an optical filter of the first block, made with a wavelength limit of 760 nm, and a registrar, characterized in that it further comprises a visible radiation unit, and a second infrared radiation unit, each of which includes a registrar, emitter, an SSD camera with an optical filter, the emitter the visible radiation tray is made in the form of a ring, the emitter of the second infrared radiation unit is made in the form of an LED, the maximum IR radiation of which is 730 nm, the optical filter of the SDC of the camera of the visible radiation block is made with a wavelength limit of 640 nm, and the optical filter of the SSD the camera of the second block is made with a wavelength limit of 805 nm.

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