CN217162067U - Handle and endoscope - Google Patents

Abstract

The utility model relates to a handle and endoscope. The handle includes the handle body and sets up the light source module in the handle body, and the light source module includes first light source, second light source and dichroscope, and the light of different wavelength can be launched to first light source and second light source, and the light source module is jetted out along the first direction after the reflection of dichroscope to the light of first light source transmission, and the light of second light source transmission jets out the light source module along the first direction behind the transmission of dichroscope. The handle has various illumination modes, and can improve the illumination function of the disposable endoscope, so that the diagnosis accuracy is improved.

Description

Handle and endoscope

Technical Field

The utility model relates to the field of medical equipment, especially relate to a handle and endoscope.

Background

With the rapid development of the field of medical instruments, endoscopes are widely used, in which the endoscopes are generally referred to as medical instruments that enter a human body through various pipes to observe the internal conditions of the human body. The existing endoscope generally comprises a repeatable endoscope and a disposable endoscope, the repeatable endoscope is complex in structure and expensive, the risk of surgical cross infection exists when the repeatable endoscope is repeatedly used for many times, and the disposable endoscope is simple in structure, low in cost and low in risk of surgical cross infection. However, current disposable endoscopes have limited lighting capabilities, resulting in poor diagnostic accuracy.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a handle and an endoscope for solving the problem that the current disposable endoscope has limited lighting function and low diagnosis accuracy.

A handle comprises a handle body and a light source module arranged in the handle body, wherein the light source module comprises a first light source, a second light source and a dichroic mirror, the first light source and the second light source can emit light rays with different wavelengths, the light rays emitted by the first light source are reflected by the dichroic mirror and then emitted out of the light source module along a first direction, and the light rays emitted by the second light source penetrate through the dichroic mirror and then emitted out of the light source module along the first direction.

In one embodiment, an included angle between the light emitting directions of the first light source and the second light source is twice an included angle between the light emitting direction of the first light source and the dichroic mirror.

In one embodiment, the light emitted by the first light source is white light with a wavelength of 430nm-700nm, and the light emitted by the second light source is 400nm-430nm or 780nm-810 nm.

In one embodiment, the wavelength of the light emitted by the second light source is between 400nm and 430nm, and the luminous intensity of the first light source is less than that of the second light source.

In one embodiment, the light source module further includes a third light source, the third light source and the first light source are disposed on the same side of the dichroic mirror, a wavelength of light emitted by the third light source is different from that of the first light source and the second light source, and light emitted by the third light source is reflected by the dichroic mirror and then exits the light source module along the first direction.

In one embodiment, the light source module further includes a fourth light source, the fourth light source and the second light source are disposed on the same side of the dichroic mirror, a wavelength of light emitted by the fourth light source is different from that of the first light source and the second light source, and light emitted by the fourth light source and the second light source passes through the dichroic mirror and then exits the light source module along the first direction.

In one embodiment, the endoscope further comprises a light guide element, the handle body is provided with a butt joint end for butt joint with the insertion part of the endoscope, the light guide element comprises a light inlet and a light outlet, the light inlet is used for receiving light emitted by the light source module, and the light outlet is positioned at the butt joint end.

In one embodiment, the first direction is parallel to a light emitting direction of the second light source, and the light inlet is opposite to the second light source.

In one embodiment, the light source further comprises a light-condensing element, and the light-condensing element is arranged between the dichroic mirror and the light inlet.

An endoscope comprises an insertion part and a handle according to any one of the embodiments, wherein the insertion part is in butt joint with the handle so as to guide light rays emitted by a light source module.

Above-mentioned handle when being applied to the endoscope, because the handle disposes the light source module, can the transmitted light provide the illumination for the use of endoscope for the endoscope gets into human tip and need not to dispose the light source again, can avoid light source heat to burn human tissue or the light source to take the human condition that produces electrical safety harm under high frequency high power. Simultaneously, set up the light source module in the handle, because there is bigger accommodation space in the handle, for setting up the light source in the less first end in endoscope space, the quantity and the kind of light source set up more in a flexible way, are favorable to richening the illumination mode of endoscope, promote the illuminating effect of endoscope. Furthermore, the light source module in the handle sets up two light sources and the collocation of dichroscope for two light sources can also can the light-emitting simultaneously by the light-emitting alone, form manifold lighting model, can satisfy more diversified lighting demands. Therefore, when the handle is applied to the disposable endoscope, different light rays can be emitted, the illumination mode of the disposable endoscope is enriched, and the diagnosis accuracy rate is improved. The application of dichroic mirror also can make the light source module structure that disposes two light sources compacter, compresses the occupation space of light source module for the light source module can not occupy the inside too much space of handle, avoids reducing the convenience of handle portability and operation because of disposing the light source module.

Drawings

FIG. 1 is a schematic view of an endoscope in some embodiments;

FIG. 2 is a schematic view of a light source module according to some embodiments;

FIG. 3 is a schematic view of a light source module according to another embodiment;

fig. 4 is a more detailed schematic diagram of an endoscope in some embodiments.

10, an endoscope; 1. firstly, terminating; 11. an image pickup element; 14. a head end fixing seat; 2. an insertion portion; 12. a clamp tube; 13. a light guide optical fiber; 3. a handle; 30. a handle body; 301. a butt joint end; 31. bending control push rods; 32. clamping a pipeline joint; 33. pressing a key; 4. a light source module; 41. a light guide element; 411. a light inlet; 412. a light outlet; 42. a light condensing element; 43. a dichroic mirror; 44. a first light source; 45. a second light source; 5. a video transmission element.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are for purposes of illustration only and do not denote a single embodiment.

At present, a light source is usually arranged at a tip of a disposable endoscope to realize illumination, when the tip enters a human body, the heat of the light source easily burns human tissues, or serious electrical safety hazard is caused to the human body under the condition of high frequency and high power. Meanwhile, the tip needs to be used for a human body, the size of the tip is usually small, and the installation space of the light source is limited, so that the number and the types of the light sources are limited, the illumination mode of the disposable endoscope is too simple, the illumination function is insufficient, and the medical diagnosis is not facilitated.

In order to solve the above problems, the present application provides a handle, an endoscope and an illumination method thereof.

Referring to fig. 1, fig. 1 is a schematic view of an endoscope 10 in some embodiments. The endoscope 10 is applicable to medical diagnosis, for example, the endoscope 10 can enter a human body to observe the internal condition of the human body to perform medical diagnosis on human tissues. The endoscope 10 includes, but is not limited to, an otorhinolaryngological endoscope, an oral endoscope, a dental endoscope, a neuroscope, a urocystoscope, an resectoscope, a laparoscope, an arthroscope, a sinonasal endoscope, a laryngoscope, etc., and the endoscope 10 may be a disposable endoscope.

In some embodiments, endoscope 10 includes handle 3, insertion portion 2, tip head 1, and video transmission element 5. The handle 3 is used for holding by hand to control and operate the endoscope 10, the insertion part 2 is connected with the handle 3, the insertion part 2 can be inserted into a human body, the tip 1 is arranged at one end of the insertion part 2 far away from the handle 3, and the tip 1 can be used as a window for the endoscope 10 to obtain human body images. For example, the tip 1 is provided with an image pickup element 11, and the image pickup element 11 may be an image sensor for acquiring an image of a human tissue. The video transmission element 5 can be an image signal transmission line, the image pickup element 11 is in signal connection with the video transmission element 5, and the human body image acquired by the image pickup element 11 is transmitted to a display screen or other devices through the video transmission element 5 so as to facilitate medical diagnosis of the human body.

Further, in some embodiments, the handle 3 includes a handle 30 and a light source module 4 disposed in the handle 30, and the insertion portion 2 can guide the light emitted from the light source module 4 to the tip 1, so as to realize illumination of the endoscope 10 on human tissues. Specifically, referring to fig. 1 and 2, fig. 2 is a schematic view of a light source module 4 in some embodiments. In some embodiments, the light source module 4 includes a first light source 44, a second light source 45, and a dichroic mirror 43, and the first light source 44 and the second light source 45 can emit light with different wavelengths. The dichroic mirror 43 is disposed on the light emitting paths of the first light source 44 and the second light source 45, and the light emitted from the first light source 44 is reflected by the dichroic mirror 43 and then exits the light source module 4 along the first direction. The light emitted from the second light source 45 is transmitted by the dichroic mirror 43 and then exits the light source module 4 along a first direction, wherein the first direction may be a direction shown by a dotted arrow in fig. 2. In other words, the light beams emitted by the first light source 44 and the second light source 45 are emitted from the light source module 4 in the same direction through the dichroic mirror 43, so that the insertion portion 2 guides the light beams emitted from the light source module 4, and the emitting direction can be regarded as the emitting direction of the light source module 4.

It can be understood that the first light source 44 and the second light source 45 can emit light independently, the light source module 4 can emit light emitted by one of the first light source 44 and the second light source 45, the first light source 44 and the second light source 45 can also emit light simultaneously, and the light source module 4 can emit light emitted by the first light source 44 and the second light source 45 simultaneously. Thus, the light source module 4 has different light emission modes by the cooperation of the first light source 44, the second light source 45 and the dichroic mirror 43.

When the handle 3 is applied to the endoscope 10, the handle 3 is provided with the light source module 4, and light emitted by the light source module 4 can be guided out through the insertion part 2 to provide illumination for the use of the endoscope 10, so that the tip 1 of the endoscope 10 does not need to be provided with a light source, and the situation that human tissues are burnt by heat of the light source or the light source carries a human body to generate electrical safety hazard under high-frequency and high-power conditions can be avoided. Meanwhile, the light source module 4 is arranged in the handle 3, the handle 3 can have a larger size because the handle 3 does not need to be inserted into a human body, namely, a larger accommodating space is arranged in the handle 3, and compared with the light source arranged in the tip 1 with a smaller size of the endoscope 10, the light source is more flexibly arranged in quantity and type, so that the illuminating mode of the endoscope 10 is enriched, and the illuminating effect of the endoscope 10 is improved. Furthermore, the light source module 4 in the handle 3 sets up two light sources and the collocation of dichroic mirror 43 for two light sources can also can be the light-emitting simultaneously by the light-emitting alone, form manifold lighting pattern, can satisfy more diversified lighting demands. Therefore, when the handle 3 is applied to the disposable endoscope 10, different light rays can be emitted, the illumination mode of the disposable endoscope 10 is enriched, and the diagnosis accuracy is improved. Secondly, the application of dichroic mirror 43 also can make the light source module 4 that disposes two light sources structure compacter, compresses the occupation space of light source module 4 for light source module 4 can not occupy the inside too much space of handle 3, avoids reducing the convenience of handle 3 portability and operation because of disposing light source module 4.

Certainly, in other embodiments, the light source module 4 may also be applied to other scenes that need different light emitting modes, for example, in a decoration scene that needs different color light irradiation, and then the handle 3 may be the operation handle 3 of other devices, so as to improve the application range of the handle 3.

The specific arrangement of the first light source 44, the second light source 45 and the dichroic mirror 43 is not limited, as long as the light source module 4 can form different light emitting modes, i.e. can emit light rays with different wavelengths, so as to enrich the lighting mode of the endoscope 10 and improve the lighting effect of the endoscope 10.

In some embodiments, the light emitting direction of the first light source 44 is perpendicular to the light emitting direction of the second light source 45, and the dichroic mirror 43 is inclined to the light emitting directions of the first light source 44 and the second light source 45. For example, the dichroic mirror 43 forms an angle of 45 ° with the light emitting directions of the first light source 44 and the second light source 45, and the dichroic mirror 43 can reflect the light emitted by the first light source 44 and transmit the light emitted by the second light source 45. In other words, the first light source 44 and the second light source 45 are respectively disposed on two sides of the dichroic mirror 43, the light emitted from the first light source 44 is reflected by 90 ° on the dichroic mirror 43 and then exits the light source module 4 along the first direction, and the light emitted from the second light source 45 passes through the dichroic mirror 43 and then exits the light source module 4 along the first direction, at this time, the light emitting direction of the second light source 45 is parallel to the first direction.

In the present application, a light-emitting direction of a certain element is described, and when a light beam emitted by the element is a laser beam with good linearity, the light-emitting direction of the element can be understood as a propagation direction of the laser beam emitted by the element, and when the element is a surface light source, the light-emitting direction of the element can be understood as a direction in which a light-emitting surface is directed straight ahead, for example, a direction in which the light-emitting intensity is maximum or a propagation direction of a central beam.

Of course, there may be other relative positions of the first light source 44, the second light source 45 and the dichroic mirror 43, as long as the light emitted by the first light source 44 and reflected by the dichroic mirror 43 and the light emitted by the second light source 45 and transmitted by the dichroic mirror 43 can exit the light source module 4 along the same direction. For example, referring to fig. 3, fig. 3 is a schematic view of a light source module 4 in other embodiments. In other embodiments, the light emitting direction of the first light source 44 is inclined to the light emitting direction of the second light source 45, and the included angle between the light emitting directions of the first light source 44 and the second light source 45 is twice the included angle between the light emitting direction of the first light source 44 and the dichroic mirror 43. For example, the angle between the light emitting direction of the first light source 44 and the dichroic mirror 43 is 30 °, and the angle between the light emitting direction of the first light source 44 and the light emitting direction of the second light source 45 is 60 °; alternatively, the angle between the light emitting direction of the first light source 44 and the dichroic mirror 43 is 40 °, and the angle between the light emitting direction of the first light source 44 and the light emitting direction of the second light source 45 is 80 °. The relative positions of the first light source 44, the second light source 45 and the dichroic mirror 43 may be further set, and are not described herein again.

In some embodiments, the first light source 44 is a white light source, the first light source 44 is capable of emitting white light having a wavelength of 430nm-700nm, the second light source 45 is a blue light source, and the second light source 45 is capable of emitting blue light having a wavelength of 400nm-430nm, such as emitting narrow band blue light having a wavelength of 415 nm. The light source module 4 may include three light emitting modes, a white light mode in which the first light source 44 emits light alone, a blue light mode in which the second light source 45 emits light alone, and a blue-white mixed light mode in which the first light source 44 and the second light source 45 emit light simultaneously. Therefore, the handle 3 can realize a plurality of illumination modes through the cooperation of the first light source 44, the second light source 45 and the dichroic mirror 43, and can perform both white light illumination and blue light illumination when applied to the disposable endoscope 10, thereby enriching the illumination function of the disposable endoscope 10. It should be noted that, when the handle 3 is applied to the endoscope 10, the first light source 44 and the second light source 45 emit light simultaneously, so that the narrow-band blue light emitted by the second light source 45 has a high ratio, the white light emitted by the first light source 44 has an illumination effect, and the narrow-band blue light emitted by the second light source 45 can be absorbed by human tissues, thereby facilitating obtaining a clear superficial layer blood vessel distribution condition, and the lesion area and the normal tissues are obviously separated, thereby being beneficial to improving the accuracy of diagnosis of the endoscope 10.

Of course, in other embodiments, the second light source 45 may also be an infrared light source, and the second light source 45 may be capable of emitting infrared light having a wavelength of 780nm to 810nm, for example, emitting infrared light having a wavelength of 785 nm. The light source module 4 can have a white light mode and a red light mode, and when the handle 3 is applied to the endoscope 10, if the second light source 45 emits light alone, that is, the light source module 4 is in the red light mode, infrared light is guided out through the insertion portion 2 and then irradiates on human tissues, and fluorescence with a wavelength of 810nm to 900nm can be excited by the human tissues. The fluorescence is received by the imaging element 11 of the endoscope 10 to form a clear lesion area image, and the accuracy of diagnosis can be improved.

Of course, in other embodiments, the wavelength ranges of the light emitted by the first light source 44 and the second light source 45 may also be interchanged, and the orientation of the dichroic mirror 43 should be adjusted accordingly, so that the light emitted by the first light source 44 and the second light source 45 still exits along the first direction after passing through the dichroic mirror 43. For example, the dichroic mirror 43 is flipped.

In order to further enrich the light emitting mode of the handle 3 and enrich the illumination mode of the endoscope 10, in some embodiments, the light source module 4 can be further configured with a larger number of light sources, each light source can emit light independently, and any plurality of light sources can also emit light simultaneously, so as to form various light emitting modes. For example, in some embodiments, the light source module 4 further includes a third light source (not shown), the third light source is disposed on the same side of the dichroic mirror 43 side by side with the first light source 44, and the light emitting direction of the third light source is parallel to the light emitting direction of the first light source 44 and perpendicular to the light emitting direction of the second light source 45. The light emitted from the third light source is reflected by the dichroic mirror 43 and then exits the light source module 4 along the first direction. It can be understood that, when the wavelength of the light emitted by the third light source is different from the wavelengths of the light emitted by the first light source 44 and the second light source 45, the light source module 4 further includes a light emitting mode in which the third light source emits light alone, and an illumination mode in which the third light source emits light with one or both of the first light source 44 and the second light source 45. Therefore, the number of light sources is increased, the illumination modes of the endoscope 10 can be enriched, the illumination function of the endoscope 10 is improved, the endoscope 10 is suitable for more diagnosis scenes, and the diagnosis accuracy is improved.

In some embodiments, the light source module 4 may further include a fourth light source (not shown), the fourth light source and the second light source 45 are arranged side by side on the same side of the dichroic mirror 43, a light emitting direction of the fourth light source is parallel to the second light source 45 and perpendicular to the first light source 44, and light emitted by the fourth light source passes through the dichroic mirror 43 and then exits the light source module 4 along the first direction. The illumination mode of the endoscope 10 can also be enriched by configuring the fourth light source, for example, in some embodiments, the second light source 45 is a blue light source, and the fourth light source is an infrared light source, so that the endoscope 10 has both the blue light illumination mode and the infrared light illumination mode, and can acquire a superficial blood vessel distribution image through blue light and also acquire a fluorescence image of a human tissue through infrared light, so that the illumination function is richer, the applicable diagnosis range is wider, and the diagnosis accuracy is high.

In some embodiments, the handle 3 further comprises a light guide element 41, the handle body 30 is provided with a docking end 301 for docking with the insertion portion 2, and the light guide element 41 comprises a light inlet 411 and a light outlet 412. The light inlet 411 is located at the light outlet of the light source module 4 for receiving the light emitted from the light source module 4, and the light outlet 412 is located at the docking end 301. Specifically, the light guide element 41 may be an optical fiber, and the light guide element 41 can receive the light emitted from the light source module 4 and transmit the light to the docking end 301 for the insertion portion 2 to receive.

It can be understood that, when the light emitting direction of the light source module 4 is parallel to the light emitting direction of the second light source 45, the light inlet 411 of the light guiding element 41 is opposite to the second light source 45.

Certainly, there may be other arrangements of the positions of the first light source 44 and the second light source 45, and there may be other numbers of light sources in the light source module 4, and the wavelength ranges of the emergent light of the first light source 44 and the second light source 45 are not limited, and may be specifically set according to the lighting requirements of the endoscope 10, for example, the first light source 44 may emit blue light of 400nm-430nmm, the second light source 45 may emit white light of 430nm-700nm, as long as the diversified lighting mode can be formed by matching with the dichroic mirror 43, the lighting function of the endoscope 10 is enriched, so as to improve the diagnosis accuracy. The types of the first light source 44 and the second light source 45 are not limited, and may be LED cold light sources, or other light sources such as laser light sources, as long as they can emit light in a desired wavelength range.

In some embodiments, the handle 3 further includes a light-focusing element 42, and the light-focusing element 42 is disposed between the dichroic mirror 43 and the light-entering port 411 of the light-guiding element 41, so as to couple the light emitted from the light source module 4 into the light-guiding element 41, thereby improving the utilization rate of the light. The light-gathering element 42 may be a convex lens, or an optical component with positive refractive power formed by a plurality of lenses as long as the light emitted from the light source module 4 can be coupled into the light-guiding element 41.

Referring also to fig. 1, 2 and 4, fig. 4 is a more detailed schematic diagram of endoscope 10 in some embodiments, wherein the dashed box portion illustrates the structure of tip 1. In some embodiments, a light guide fiber 13 is disposed in the insertion portion 2, one end of the light guide fiber 13 is disposed adjacent to the insertion portion 2 to receive the light transmitted by the light guide element 41, and the light guide fiber 13 extends along the insertion portion 2 to the distal end 1 so as to transmit the light received from the light guide element 41 to the distal end 1 for being emitted to the endoscope 10. Specifically, in some embodiments, the light guide fiber 13 may be provided with two light guide fibers 13, and when the light guide fiber 13 extends to the front end 1, the ends of the two light guide fibers 13 are respectively located at two sides of the image pickup element 11. The light guide optical fiber 13 illuminates on two sides of the camera element 11, so that the illumination effect can be improved, and the camera element 11 can receive more comprehensive and clear human tissue images.

In some embodiments, the endoscope 10 is further provided with a forceps tube 12 extending from the handle 3 to the tip 1 through the insertion portion 2, and the handle body 30 is opened with a forceps tube interface 32 so that surgical instruments and medical accessories can be introduced into the body from the forceps tube interface 32 through the forceps tube 12. The first end 1 may further have a head end fixing seat 14, and the head end fixing seat 14 is provided with a hole structure having a shape corresponding to the image pickup element 11, the light guide fiber 13 and the clamp tube 12, so as to fix the image pickup element 11, the light guide fiber 13, the clamp tube 12 and other elements. The handle 30 may further include a key 33 for controlling the light emitting mode of the light source module 4, such as controlling the first light source 44 and the second light source 45 to emit light independently or simultaneously, and controlling the light emitting interval and the light emitting time of the first light source 44 and the second light source 45. It should be noted that each light source in the light source module 4 can be controlled by different keys 33, that is, the control circuits of each light source are independent from each other, so as to control the light emitting intensity and the light emitting mode of each light source. The handle 30 is further provided with a bending control push rod 31 for controlling the bending direction of the insertion portion 2, so that the insertion portion 2 can smoothly enter the human body to reach a designated part for diagnosis. Of course, the endoscope 10 may also be provided with other structures to assist in operation and diagnosis, which will not be described in detail herein.

Referring to fig. 1 and fig. 2 again, in some embodiments, the present application further provides an illumination method of the endoscope 10, and the endoscope 10 according to any of the above embodiments is used to illuminate human tissues, so that the illumination effect is good, the normal region and the lesion region can be clearly distinguished, and the diagnosis accuracy is improved. Specifically, the illumination method of the endoscope 10 includes the steps of:

the endoscope 10 described above is provided. Wherein, the light-emitting direction of first light source 44 is perpendicular to the light-emitting direction of second light source 45, and 45 contained angles are all formed with the light-emitting direction of first light source 44 and second light source 45 to dichroic mirror 43, and dichroic mirror 43 can reflect the light of first light source 44 transmission and see through the light of second light source 45 transmission. The first light source 44 can emit white light having a wavelength of 430nm to 700nm, and the second light source 45 can emit blue light having a wavelength of 400nm to 430 nm.

And controlling the first light source 44 and the second light source 45 to emit light, wherein the light intensity of the first light source 44 is less than that of the second light source 45. In other words, the endoscope 10 is an illumination mode in which blue-white light is emitted simultaneously, and in which the proportion of blue light is greater than the proportion of white light.

In the illumination method of the endoscope 10, the endoscope 10 is used to realize mixed light emission of blue light and white light, and the ratio of the blue light is greater than that of the white light. The white light plays a role in illumination, and the white light with a smaller proportion can meet the illumination requirement, so that the use cost of the endoscope 10 can be saved. The blue light accounts for a relatively large proportion, and due to the absorption characteristic of human tissues to the blue light, the endoscope 10 can acquire clear superficial blood vessel distribution conditions, so that accurate identification of a focus area is facilitated, and the accuracy of diagnosis is improved.

Of course, when the first light source 44 and the second light source 45 emit light simultaneously, the specific ratio of the blue light to the white light is not limited as long as a clear superficial blood vessel distribution image can be obtained while satisfying the illumination requirement. For example, in some embodiments, the ratio of the intensity of blue light to the intensity of white light may be greater than 1: 1, less than or equal to 10: 1. specifically, it may be 2:1, 5:1, 8:1 or 10: 1.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A handle is characterized by comprising a handle body and a light source module arranged in the handle body, wherein the light source module comprises a first light source, a second light source and a dichroic mirror, the first light source and the second light source can emit light rays with different wavelengths, the light rays emitted by the first light source are reflected by the dichroic mirror and then emitted out of the light source module along a first direction, and the light rays emitted by the second light source are emitted out of the light source module along the first direction after penetrating through the dichroic mirror.

2. The handle of claim 1, wherein an angle between the light emitting directions of the first light source and the second light source is twice an angle between the light emitting direction of the first light source and the dichroic mirror.

3. The handle according to claim 1, wherein the light emitted by the first light source is white light having a wavelength of 430nm to 700nm, and the light emitted by the second light source has a wavelength of 400nm to 430nm or 780nm to 810 nm.

4. The handpiece of claim 3, wherein the second light source emits light having a wavelength between 400nm and 430nm, and wherein the first light source has a luminous intensity less than the luminous intensity of the second light source.

5. The handle according to claim 1, wherein the light source module further comprises a third light source, the third light source and the first light source are disposed on the same side of the dichroic mirror, the third light source emits light with a wavelength different from that of the first light source and the second light source, and the light emitted from the third light source is reflected by the dichroic mirror and then exits the light source module along the first direction.

6. The handle according to claim 1, wherein the light source module further comprises a fourth light source, the fourth light source and the second light source are disposed on the same side of the dichroic mirror, the wavelength of light emitted from the fourth light source is different from that of the first light source and the second light source, and the light emitted from the fourth light source and the second light source passes through the dichroic mirror and then exits the light source module along the first direction.

7. The handle according to any one of claims 1-6, further comprising a light guide element, wherein the handle body is provided with a docking end for docking with an insertion portion of an endoscope, the light guide element comprises a light inlet and a light outlet, the light inlet is used for receiving light emitted from the light source module, and the light outlet is located at the docking end.

8. The handle of claim 7, wherein the first direction is parallel to a light exit direction of the second light source, and the light entrance is opposite the second light source.

9. The handle according to claim 7, further comprising a light-focusing element disposed between the dichroic mirror and the light inlet.

10. An endoscope comprising an insertion portion and a handle as claimed in any of claims 1 to 9, the insertion portion being adapted to interface with the handle to direct light emitted from the light source module.

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