A light source device and an endoscope system of an endoscope system

Abstract

The present invention relates to the technical field of medical devices, and particularly to a light source device and an endoscope system of an endoscope system. Among them, the light source device includes: a filter module, a light source outlet and at least one light source inlet of the light source device are formed at the periphery of the filter module, and the same number of filter sheets as the light source outlet and the light source inlet are arranged inside the filter module, and at least one filter sheet is configured to selectively intervene in or avoid the propagation path between the specified light source outlet and the light source inlet; a light source, which is arranged around the periphery of the filter module and corresponds to a plurality of light source inlets. By enabling the filter sheet to selectively intervene in or avoid the propagation path between the light source outlet and the plurality of light source inlets, a richer and more diverse spectrum can be combined without increasing the light source, effectively increasing the number of spectra that the light source device can achieve, enabling the function of the light source device to be more abundant, and meeting the complex application scenarios of clinical use.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a light source device and an endoscope system of an endoscope system. Background Art

[0002] The light source device of the endoscope system is used to provide bright illumination for observing the internal cavity. At present, the light source device of the existing endoscope system includes a plurality of lamp group light sources. However, the plurality of lamp group light sources are discretely distributed inside the light source device, resulting in an unreasonable layout of the light source device and a large occupied space, which is not conducive to the compact and lightweight design of the light source device. Moreover, limited by the internal space of the light source device of the endoscope system, the number of optical modules in the existing light source device of the endoscope system is limited, the number of spectra that can be realized is small, and the function is relatively single, which cannot meet the complex application scenarios in clinical use. Summary of the Invention

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defects of the unreasonable layout, large occupied space and relatively single function of the light source device in the prior art, so as to provide a light source device and an endoscope system of an endoscope system with a more reasonable layout, a smaller occupied space and a larger number of spectra that can be realized.

[0004] To solve the above problems, the first aspect of the present invention provides a light source device of an endoscope system. The light source device includes: a filter module, a light source outlet and at least one light source inlet of the light source device are formed around the filter module, a filter corresponding to the light source outlet and the light source inlet in number is arranged inside the filter module, and at least one filter is configured to selectively intervene or avoid the propagation path between the specified light source outlet and the light source inlet; a light source, which is arranged around the filter module and corresponds to a plurality of light source inlets.

[0005] Further, the light source includes a first light source, and the filter module includes a first filter that allows the first light source to transmit; wherein, the first filter can selectively intervene or avoid the propagation path of the first light source.

[0006] Further, the light source device further includes:

[0007] A first linear driving mechanism, which is connected to the first filter and is suitable for driving the first filter to intervene or avoid the propagation path of the specified first light source.

[0008] Further, the light source device includes a first light source group and a second light source group, a first included angle is formed between the lights released by the first light source group and the second light source group, the filter module further includes a third filter arranged at the intersection of the lights released by the first light source group and the second light source group, and the third filter is suitable for refracting the light irradiated by the first light source group and transmitting the light irradiated by the second light source group, so that the light is emitted through the light source outlet.

[0009] Furthermore, the first light source group and the second light source group each include a first light source and a second light source. A second included angle is formed between the irradiation directions of the first light source and the second light source. The filter module further includes a fourth filter disposed at the intersection of the irradiation directions of the first light source and the second light source. The fourth filter is adapted to refract the light irradiated by the first light source and transmit the light irradiated by the second light source, so that the light passes through the third filter.

[0010] Furthermore, the first filter is located between the first light source and the third filter; and / or,

[0011] The included angle between the first filter and the orientation of the first light source is α, and 15° ≤ α ≤ 75°.

[0012] Furthermore, the third filter and the first filter are arranged in sequence along the light propagation direction.

[0013] Furthermore, the light source includes at least one of a red light source, a green light source, a blue light source, and a UV light source.

[0014] Furthermore, the light source device further includes a condenser lens group and a light guide member sequentially disposed at the light source outlet; and / or,

[0015] The filters in the filter module are all antireflection filters.

[0016] The second aspect of the present invention relates to an endoscope system, including the light source device of the first aspect of the present invention.

[0017] The present invention has the following advantages:

[0018] As can be seen from the above technical solutions, the endoscope system of the first aspect of the present invention mainly includes a filter module and a plurality of light sources respectively distributed at a plurality of light source inlets of the filter module. And at least one filter is arranged to selectively intervene or avoid the propagation path between the light source outlet and the plurality of light source inlets. By modularizing the filter module design, multiple light sources can share the filter module, which can not only improve the utilization rate of the filter module, but also reduce the space occupied by the filter module, achieving the purpose of compact design of the filter module and the plurality of light sources. By selectively intervening or avoiding the propagation path between the light source outlet and the plurality of light source inlets, a richer and more diverse spectrum can be combined without increasing the light source, effectively increasing the number of spectra that the light source device can achieve, making the function of the light source device more abundant, and meeting the complex application scenarios of clinical use.

[0019] The endoscope system according to the second aspect of the present invention includes or uses the light source device of the endoscope system according to the first aspect of the present invention, and thus has its beneficial effects, that is, it can improve the utilization rate of the filter module, and can also reduce the space occupied by the filter module, achieving the purpose of compact design of the filter module and multiple light sources. By selectively intervening or avoiding the propagation path between the light source outlet and the multiple light source inlets with the filter, it is possible to combine a more diverse spectrum without increasing the light sources, effectively increasing the number of spectra that the light source device can achieve, making the functions of the light source device more abundant, and meeting the complex application scenarios in clinical use. In addition, the endoscope system according to the second aspect of the present invention is compactly designed. Through the compact design of the endoscope system, the requirement for the use space of the endoscope system is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 Schematically shows the light source device of the endoscope system according to an embodiment of the present invention;

[0022] Figure 2 Is an enlarged view of the light source inlet of the light source device of the endoscope system according to an embodiment of the present invention;

[0023] Figure 3 Is the light source device of the endoscope system according to an embodiment of the present invention. For the convenience of showing the included angle between the light sources, some filter elements are hidden.

[0024] Description of the reference numerals:

[0025] 11, first filter element; 12, second filter element; 13, third filter element; 14, fourth filter element; 21, red light source; 22, green light source; 23, blue light source; 24, UV light source; 3, condenser lens group; 4, light guide member. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following will clearly and completely describe the technical solutions of the present invention with reference to the drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0030] Figure 1 Schematically shows the light source device of the endoscope system according to an embodiment of the present invention. Figure 2 It is an enlarged view of the light source inlet of the light source device of the endoscope system according to an embodiment of the present invention. As Figure 1 good Figure 2 As described above, the light source device of the endoscope system of the present invention mainly includes a filter module and a light source. Among them, the periphery of the filter module forms a light source outlet and at least one light source inlet of the light source device. The inside of the filter module is provided with filter plates corresponding to the number of the light source outlet and the light source inlet, and at least one of the filter plates is configured to selectively intervene or avoid the propagation path between the specified light source outlet and the light source inlet. The light source is disposed around the periphery of the filter module and corresponds to a plurality of light source inlets. (Since the positions of the plurality of light source inlets coincide with the positions of the plurality of light sources, the plurality of light source inlets are not marked in the figure, and the marked positions of the plurality of light sources are the positions of the plurality of light source inlets, and the light source outlet is formed at the light guide member 4).

[0031] As can be seen from the above technical solutions, the endoscope system of this embodiment mainly includes a filter module and a plurality of light sources respectively distributed at a plurality of light source inlets of the filter module. And at least one filter is arranged to selectively intervene or avoid the propagation path between the light source outlet and the plurality of light source inlets. By modularizing the filter module design, multiple light sources can share the filter module, which can not only improve the utilization rate of the filter module, but also reduce the space occupied by the filter module, achieving the purpose of compact design of the filter module and the plurality of light sources. By selectively intervening or avoiding the propagation path between the light source outlet and the plurality of light source inlets with the filter, a richer and more diverse spectrum can be combined without increasing the light source, effectively increasing the number of spectra that the light source device can achieve, making the function of the light source device more abundant, and meeting the complex application scenarios of clinical use. Improve the imaging quality.

[0032] The light source inlets, the filters corresponding to the light source inlets, and the number of spectra corresponding to the filters are adapted according to the use environment.

[0033] Among them, the plurality of light sources preferably but not limited to include a red light source 21, a green light source 22, a blue light source 23, a UV light source 24, a white light source or a narrow-band light source, etc. For example, in this embodiment, the light source includes a first light source 11, and the filter module includes a first filter 11 that allows the first light source to transmit. Among them, the first filter 11 can selectively intervene or avoid the propagation path of the first light source. The first light source is preferably but not limited to at least one of the red light source 21, the green light source 22 or the blue light source 23.

[0034] For example, when the first light source is the red light source 21, the first filter 11 is preferably a filter suitable for allowing red light to transmit. When the first filter 11 intervenes in the propagation path of the first light source, the light source device can be used for red laser speckle imaging. Due to its advantages such as non-contact, non-invasive, and fast imaging, laser speckle imaging technology is often applicable to the measurement of blood microcirculation. Laser speckle technology can be used to measure microcirculation parameters such as blood vessel diameter, blood vessel density, blood flow velocity, and blood perfusion. By examining the structure, function, and metabolic activities of microcirculation blood vessels, the laws and pathological mechanisms of microcirculation changes in basic pathological processes such as inflammation, edema, bleeding, allergy, shock, tumor, burn, frostbite, and radiation injury can be studied, which is of great significance for disease diagnosis, condition analysis, and treatment measures.

[0035] When the first filter 11 avoids the propagation path of the first light source, the light source device can be used to emit red light.

[0036] When the first light source includes a blue light source 23 and a green light source 22, the first filter 11 is preferably a filter suitable for filtering broadband green light. When the first filter 11 is inserted into the propagation path of the first light source, the first filter can filter broadband light waves, leaving only blue light waves with a wavelength of about 415 nm and green light waves with a wavelength of about 540 nm. The NBI narrowband light wave wavelength is included in the wavelength range of light waves that can be absorbed by hemoglobin, and it is difficult to diffuse and can be absorbed by blood. Therefore, it can increase the contrast and clarity of the mucosal epithelium and submucosal vascular patterns, thereby improving the accuracy of diagnosis.

[0037] When the first filter 11 avoids the propagation path of the first light source, by adjusting the opening and closing state of the light source device, the light source device can be used to emit green light, blue light, or a mixed light of blue light and filtered light.

[0038] When the first light source is a white light source, the first filter 11 can be selected as a red-green-blue (RGB) filter. At this time, when the first filter 11 is inserted into the propagation path of the white light source, the red-green-blue (RGB) filter can filter white light, leaving only blue light with a wavelength of 415 nm, green light waves with a wavelength of 540 nm, and red narrowband light waves with a wavelength of 600 nm. The NBI narrowband light wave wavelength is included in the wavelength range of light waves that can be absorbed by hemoglobin, and it is difficult to diffuse and can be absorbed by blood. Therefore, it can increase the contrast and clarity of the mucosal epithelium and submucosal vascular patterns, thereby improving the accuracy of diagnosis. When the first filter 11 avoids the propagation path of the white light source, the first light source can be used to emit white light.

[0039] In this embodiment, the narrowband green light refers to green light with a wavelength range between 400 and 505 nm.

[0040] The first filter 11 can be selected to be manually moved. At this time, the first filter 11 can be set to be detachable, or a slide rail is provided between the light source inlet and the light source outlet, and the first filter 11 is slidably connected to the slide rail. The operator can drive the first filter 11 to move along the slide rail, so that the first filter 11 can selectively intervene or avoid the propagation path between the light source outlet and multiple light source inlets.

[0041] Preferably, as Figure 3 shown, in this embodiment, the light source device preferably further includes a first linear drive mechanism. Among them, the first linear drive mechanism is connected to the first filter 11 and is suitable for driving the first filter 11 to intervene or avoid the propagation path of the first light source. The first linear drive mechanism can be selected as a device capable of outputting linear motion, such as a hydraulic cylinder, a pneumatic cylinder, an electric cylinder, or a combination of a motor and a rack and pinion, etc.

[0042] In this embodiment, the light source device includes a first light source group and a second light source group. The directions of the light rays emitted by the first light source group and the second light source group form a first included angle Θ1. The filter module further includes a third filter 13 disposed at the intersection of the light rays emitted by the first light source group and the second light source group. The third filter 13 is adapted to refract the light rays irradiated by the first light source group and transmit the light rays irradiated by the second light source group, so that the light rays are emitted through the light source outlet.

[0043] This enables that when the first light source group is turned on and the second light source group is turned off, the light at the light source outlet is the light rays emitted by the first light source group. When the first light source group is turned off and the second light source group is turned on, the light at the light source outlet is the light rays emitted by the second light source group. When both the first light source group and the second light source group are turned on, the light rays at the light source outlet are the mixed light of the light rays emitted by the first light source group and the second light source group. The first included angle Θ1 is preferably in the range of 60° - 120°. In an optimal embodiment, the angle of the first included angle Θ1 is 90°, which can reduce the space occupied by the light source device and make the structure of the light source device more compact.

[0044] Therefore, the distribution positions of the light source and the filter of the light source device of the present invention are reasonable, so that a third filter 13 can be used to complete various operations such as refracting light, transmitting light, and mixing light, and can output various light rays through one light source outlet, greatly enriching the spectral types of the light source device on the premise of ensuring the compact structure of the light source device.

[0045] Among them, the third filter 13 can be configured to include a reflection surface and a transmission surface. The light rays irradiated by the first light source group can irradiate on the reflection surface of the third filter 13 and are reflected by the third filter 13 and emitted through the light source outlet. The light rays irradiated by the second light source group can irradiate on the transmission surface of the third filter 13 and pass through the third filter 13 and are emitted through the light source outlet.

[0046] Preferably, in this embodiment, the third filter 13 is a dichroic lens, which has a refracting effect on light rays within a certain wavelength range and a transmitting effect on other light rays. For example, in this embodiment, the third filter 13 is adapted to transmit red light and green light and refract blue light and UV light.

[0047] Preferably, in this embodiment, as Figure 3As shown, the first light source group and the second light source group each include a first light source and a second light source with the irradiation directions forming a second angle Θ2. The filter module further includes a fourth filter 14 disposed at the intersection of the irradiation directions of the first light source and the second light source. The fourth filter 14 is adapted to refract the light irradiated by the first light source and transmit the light irradiated by the second light source, so that the light passes through the third filter 13. Therefore, all four light sources at the first light source group and the second light source group can be output through the light source outlet under the refraction and / or transmission of the third filter 13 and the fourth filter 14. By controlling the output power and light intensity of each light source and using the principle of the three primary colors to achieve different ratios, a variety of lights can be mixed. Additionally, by controlling the participation of different filters in the light path transmission according to different clinical requirements, a variety of lights that meet the clinical requirements can be combined.

[0048] The second angle Θ2 is preferably in the range of 60° - 90°. In an optimal embodiment, the angle of the second angle Θ2 is 90°, which can reduce the space occupied by each light source group and make the structure of the light source device more compact.

[0049] The first filter 11 is disposed on the propagation path of the first light source. Preferably, in this embodiment, the first filter 11 is located between the first light source and the third filter 13 and will not interfere with the propagation of other lights. The extending direction of the first filter 11 can be selected to be perpendicular to the propagation direction of the green light. Preferably, in this embodiment, in order to avoid the setting of the first filter 11 increasing the distance between the first light source and the third filter 13, resulting in an increase in the volume of the light source device, the first filter 11 is preferably set to an angle α with the orientation of the first light source, where 15° ≤ α ≤ 75°.

[0050] The second filter 12 is disposed on the propagation path of the red light. Preferably, in this embodiment, the third filter 13 and the first filter 11 are arranged in sequence along the light propagation direction.

[0051] In this embodiment, the multiple light sources at least include a red light source 21, a green light source 22, a blue light source 23, and a UV light source 24, and the red light source 21, the green light source 22, the blue light source 23, and the UV light source 24 are correspondingly disposed at multiple light source inlets. By controlling the output power and light intensity of each light source and using the principle of the three primary colors to achieve different ratios, a variety of lights can be mixed. Additionally, by controlling the participation of different filters in the light path transmission according to different clinical requirements, a variety of lights that meet the clinical requirements can be combined.

[0052] For example, as Figure 1As shown in the figure, in this embodiment, the first light source group includes a red light source 21 and a green light source 22 that are oriented perpendicular to each other. The fourth filter 14 in the first light source group is preferably a dichroic lens, which has an antireflection effect on red light and a transmittance of more than 95%, and has a reflection effect on green light and a reflectance of more than 93%. The second light source group includes a blue light source 23 and a UV light source 24 whose irradiation directions are perpendicular to each other. The fourth filter 14 in the second light source group is a dichroic lens, which has an antireflection effect on blue light and a transmittance of more than 95%, and has a reflection effect on UV light and a reflectance of more than 93%. The third filter 13 is located at the intersection of the light rays released by the first light source group and the second light source group. The third filter 13 is a dichroic lens, which has an antireflection effect on red light and green light and a transmittance of more than 95%, and has a reflection effect on blue light and UV light and a reflectance of more than 93%.

[0053] By controlling the output power and light intensity of each light source and using the principle of the three primary colors to achieve different ratios, the light source device of this embodiment can combine a variety of spectra suitable for clinical needs, including but not limited to:

[0054] When the blue light source 23 and the green light source 22 are turned on, the fourth filters 14 of the first light source group and the fourth filters 14 of the second light source group participate in the optical path transmission, so that the light waves output from the light source outlet are blue light of about 420 nm and green light of about 530 nm, which can increase the recognition rate of surface imaging.

[0055] When the green light source 22 is turned on and the first filter 11 intervenes in the propagation path between the light source outlet and the light source inlet, the light source device can be used for NBI narrow-band light imaging.

[0056] When the red light source 21 is turned on and the second filter 12 intervenes in the propagation path between the light source outlet and the light source inlet, the light source device can be used for red laser speckle imaging.

[0057] In this embodiment, the light source device further includes a condenser lens group 3 and an optical waveguide component 4 that are sequentially arranged at the light source outlet. The condenser lens group 3 can diverge the light rays emitted by the light source to form parallel light beams and transmit the light rays emitted by the light source in the form of parallel light beams, thereby reducing the light energy loss caused by divergence during the transmission of the light rays emitted by the light source.

[0058] In this embodiment, the filters in the filter module are all antireflection filters, and the antireflection filters can reduce the energy loss during the transmission of light rays, thereby improving the imaging quality of the picture.

[0059] The multi-spectral cold light source provided by this solution is applicable to a richer variety of endoscopes and clinical applications, achieving one-source general use. By using filters with high transmittance and reflectance, the imaging quality of the picture is improved and the energy loss is reduced.

[0060] In an embodiment not shown, an endoscope system is involved, which includes the above-described light source device.

[0061] In this embodiment, the endoscope system includes a viscera endoscope system, etc. The endoscope system further includes an endoscope tube (not shown in the figure) connected to the light source interface of the light source device. The endoscope tube extends into the human tissue for transmitting the light spot generated by the light source device to the human tissue, facilitating medical staff to view the condition of the human tissue. The endoscope system provided by the embodiment of the present invention has at least the following technical effects: realizing the compact design of the endoscope system, and reducing the space requirement of the endoscope system for use through the compact design of the endoscope system.

[0062] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. A light source device for an endoscope system, characterized in that, The light source device includes: A filter module, around the periphery of which a light source outlet and at least one light source inlet of the light source device are formed. Inside the filter module, filter sheets corresponding to the number of the light source outlet and the light source inlet are provided, and at least one of the filter sheets is configured to selectively intervene in or avoid the propagation path between a specified light source outlet and the light source inlet; A light source, which is disposed around the periphery of the filter module and corresponds to a plurality of light source inlets; the light source includes a first light source, and the filter module includes a first filter sheet that allows the first light source to transmit; wherein, the first filter sheet selectively intervenes in or avoids the propagation path of the first light source; the light source device further includes: A first linear driving mechanism, which is connected to the first filter sheet (11) and is adapted to drive the first filter sheet (11) to intervene in or avoid the propagation path of a specified first light source; the light source device includes a first light source group and a second light source group, and a first angle (Θ1) is formed between the lights released by the first light source group and the second light source group. The filter module further includes a third filter sheet (13) disposed at the intersection of the lights released by the first light source group and the second light source group. The third filter sheet (13) is adapted to refract the light irradiated by the first light source group and transmit the light irradiated by the second light source group, so that the light is emitted through the light source outlet.

2. The light source device according to claim 1, characterized in that Each of the first light source group and the second light source group includes a first light source and a second light source, and a second angle (Θ2) is formed between the irradiation directions of the first light source and the second light source. The filter module further includes a fourth filter sheet (14) disposed at the intersection of the irradiation directions of the first light source and the second light source. The fourth filter sheet (14) is adapted to refract the light irradiated by the first light source and transmit the light irradiated by the second light source, so that the light passes through the third filter sheet (13).

3. The light source device according to claim 1, wherein The first filter sheet (11) is located between the first light source and the third filter sheet (13); and / or, The included angle between the first filter sheet (11) and the orientation of the first light source is α, and 15° ≤ α ≤ 75°.

4. The light source device according to claim 1, wherein The third filter sheet (13) and the first filter sheet (11) are arranged in sequence along the light propagation direction.

5. The light source device according to claim 1, wherein The light source includes at least one of a red light source (21), a green light source (22), a blue light source (23), and a UV light source (24).

6. The light source device according to claim 1, wherein, The light source device further includes a condenser lens group (3) and a light guide component (4) sequentially arranged at the light source outlet; and / or, The filter sheets in the filter module are all antireflection filter sheets.

7. An endoscope system, characterized in that, Including the light source device according to any one of claims 1-6.

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