Endoscopy system

Abstract

When observing biological tissue using white light or special light, the desired tissue information of the biological tissue is obtained in a clearer state suitable for diagnosis. [Solution] The system comprises a first light source 51 that uses a semiconductor light-emitting element as its light source, a second light source 53 that uses a semiconductor light-emitting element with a different emission wavelength than the first light source 51 as its light source, a wavelength conversion member 57 that is excited and emits light by light emitted from at least one of the first light source 51 and the second light source 53, and a light intensity ratio changing means 55 that changes the light intensity ratio between the light emitted from the first light source 51 and the light emitted from the second light source 53. By arbitrarily generating light emitted from the first light source 51 and the second light source 53, illumination light suitable for diagnosis according to the absorption and scattering characteristics of biological tissue can be provided. This makes it possible to acquire desired tissue information of biological tissue in a clearer state.

Claims

1. An endoscope system comprising an endoscope, a light source device, and a processor, The endoscope has an endoscope insertion section, an operating section, and an image sensor. The aforementioned processor, The system receives the image signal from the aforementioned image sensor and outputs the observed image. The observation image is displayed on the monitor along with information regarding the observation light mode. The observation light mode includes a first observation using white light and a second observation using illumination light with a spectrum different from that of the white light. An endoscope system that makes it possible to identify whether the observed image was obtained by the first observation or by the second observation.

2. The endoscopic system according to claim 1, Within the same screen of the aforementioned monitor, an information display area is provided, separate from the endoscopic image area that displays the observation image. The endoscope system displays information regarding the observation light mode in the information display area.

3. An endoscope system according to claim 1 or 2, The light source device comprises a first light source that uses a semiconductor light-emitting element that emits blue light as its light source, and a second light source that uses a semiconductor light-emitting element that emits purple light as its light source. An endoscope system in which a wavelength conversion member is arranged in the optical path to generate white light by combining emitted light, which is emitted by absorbing a portion of the light emitted from the first light source and excited by it, and the blue light that is transmitted without being absorbed.

4. The endoscopic system according to claim 3, An endoscope system having observation light mode setting means provided in the operating unit of the endoscope, the light source device, or the processor, wherein the observation light mode is changed by changing the amount of emitted light from the first light source and the emitted light from the second light source each time a button is pressed.

5. An endoscope system according to claim 3 or 4, The second observation described above is performed using an endoscopic system that increases or decreases the ratio of the narrowband light component to the total illumination light component.

6. An endoscope system according to any one of claims 3 to 5, The wavelength conversion member is an endoscope system in which the excitation emission amount from the second light source is at least 1 / 3 or less compared to the excitation emission amount from the first light source.

7. An endoscope system according to any one of claims 3 to 6, The light source device is an endoscope system that obtains a desired amount of light emission by controlling the current applied to the first light source and the second light source.

8. The endoscopic system according to claim 7, The light source device is an endoscope system that controls the amount of light emitted by superimposing a pulse-modulated pulsed current onto the applied current.

9. An endoscope system according to any one of claims 3 to 8, The light source device is an endoscope system having an optical element that transmits the blue light emitted from the first light source.

10. The endoscopic system according to claim 4, The aforementioned processor, In response to the operation of the observation light mode setting means, the display image obtained by the first observation and the display image obtained by the second observation are acquired. An endoscope system that switches between the display image obtained from the first observation and the display image obtained from the second observation in units of one frame of the image signal from the image sensor.

11. The endoscopic system according to claim 10, The processor is an endoscope system that displays the display image obtained from the first observation and the display image obtained from the second observation in separate areas on the same screen of the monitor.

12. An endoscope system according to claim 4, 10, or 11, The observation light mode setting means is a switch or button that can switch between a plurality of preset emission light intensity levels in an endoscope system.

13. An endoscope system according to claim 4, 10, 11, or 12, An endoscope system that, by pressing the observation light mode setting means, can emit multiple illumination lights with different amounts of emitted light from the first light source and the second light source.

14. An endoscope system according to claim 4, 10, 11, 12, or 13, An endoscope system in which the observation light mode setting means automatically sets a preset amount of emitted light based on the operator's identification information or the individual identification information of the endoscope.

15. An endoscope system according to any one of claims 3 to 14, The aforementioned light source device has a third light source that emits red light, The processor is an endoscope system capable of individually adjusting the amount of light emitted from each of the aforementioned light sources.

16. An endoscope system according to any one of claims 3 to 15, An endoscope system in which either the first light source or the second light source is set to the short wavelength side, straddling the maximum peak wavelength of the hemoglobin absorption spectrum, and the other is set to the long wavelength side.

17. An endoscope system according to any one of claims 3 to 16, An endoscope system in which at least one of the first light source and the second light source is a light-emitting diode.

18. An endoscope system according to any one of claims 3 to 17, The wavelength conversion member is an endoscope system containing a phosphor material.

19. An endoscope system according to any one of claims 1 to 18, An endoscope system in which the processor records an observation image with added information regarding the observation light mode.

20. An endoscope system according to any one of claims 1 to 19, An endoscope system in which the processor performs image processing to correct the color tone or brightness of the observed image according to the observation light mode.

21. An endoscope system according to any one of claims 1 to 20, The endoscopic system includes a processor that performs image processing to enhance and display vascular information from the observed image.

22. An endoscope system according to any one of claims 1 to 21, The endoscopic system includes a processor that calculates the oxygen concentration distribution of the blood from the observed image.

23. An endoscope system according to any one of claims 1 to 22, An endoscope system in which the processor applies a color conversion coefficient according to the observation light mode to correct the color tone of the observation image.

24. An endoscope system according to any one of claims 3 to 18, The light source device is an endoscope system that causes at least the first light source and the second light source to emit light within one frame of the image signal of the image sensor.

25. An endoscope system according to any one of claims 3 to 18, The light source device is an endoscope system that causes at least the first light source and the second light source to emit light at different timings within one frame of the image signal of the image sensor.

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