Medical endoscope light source device

Abstract

The utility model relates to a medical endoscope light source device which comprises at least two light emitting mechanisms, a light combining prism and a focusing mechanism. The at least two light-emitting mechanisms are used for outputting light of different wave bands, and light-emitting light paths of the different light-emitting mechanisms are arranged in an intersecting mode. Wherein the light emitting path of the light emitting mechanism refers to a propagation path of light output by the light emitting mechanism. The light combining prism is arranged at the intersection of light emitting paths of the light emitting mechanisms and used for combining light output by the light emitting mechanisms to form a combined light beam, and the focusing mechanism is arranged on the light path of the combined light beam and used for focusing the combined light beam. According to the light source device, the light of different wavebands output by the light emitting mechanisms can be fused and output to form the combined light beam, so that the light of mixed wavebands is output, the wavelength broadness of the output light is increased, and meanwhile, the structural size of the light guide beam can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a light source device for a medical endoscope. Background Art

[0002] Endoscopes are commonly used medical devices in surgical operations and routine medical examinations. When used clinically, doctors use natural holes in the human body or make tiny incisions on the body to insert the endoscope lens into the body, and then use other surgical instruments and a camera display system to perform closed surgical operations inside the body outside the body.

[0003] In order to obtain a clear field of view, a light source device is usually required in the endoscope. The light source device is used to provide lighting for the camera of the endoscope. In the related art, the light source device in the endoscope can only output a beam of light of a single band for lighting, and cannot output a beam of light of mixed bands, which limits the application scenarios. In addition, the light emitting area of ​​the light source device in the related art is too large, resulting in an excessively large output light spot, which also affects the image clarity. Summary of the invention

[0004] Based on this, it is necessary to provide a medical endoscope light source device to improve the clarity of images acquired by the endoscope.

[0005] A medical endoscope light source device, comprising:

[0006] At least two light-emitting mechanisms, wherein the at least two light-emitting mechanisms are respectively used to output light of different wavelength bands, and light output paths of different light-emitting mechanisms are arranged to intersect;

[0007] A light-combining prism, which is arranged at the intersection of the light-emitting light paths of the light-emitting mechanisms, and is used to combine the light output by the light-emitting mechanisms to form a combined light beam; and

[0008] A focusing mechanism is arranged on the optical path of the combined light beam, and is used to focus the combined light beam.

[0009] The technical solution is further described below:

[0010] In one embodiment, the at least two light emitting mechanisms include:

[0011] A first light emitting mechanism, the first light emitting mechanism is used to output light of a first wavelength band; and

[0012] A second light-emitting mechanism, the second light-emitting mechanism is used to output a second-band light, the optical path of the second-band light is arranged to intersect with the optical path of the first-band light, the light-combining prism is arranged at the intersection of the optical path of the second-band light and the optical path of the first-band light, and the light-combining prism is configured to be able to transmit the first-band light and reflect the second-band light.

[0013] In one embodiment, the optical path of the first-band light is arranged perpendicular to the optical path of the second-band light, the light-combining prism has a light-transmitting surface and a light-reflecting surface arranged opposite to each other, the light-transmitting surface faces the first light-emitting mechanism, the light of the first-band light can penetrate the light-combining prism and be emitted along the optical path of the combined light beam, the light-reflecting surface faces the second light-emitting mechanism, and the light-reflecting surface is arranged at an angle of 45° to the optical path of the second-band light, the light of the second-band light can be reflected on the light-reflecting surface and be emitted along the optical path of the combined light beam.

[0014] In one embodiment, the medical endoscope light source device also includes a first fixing seat, which is a hollow frame structure. The first fixing seat includes a first mounting surface and a second mounting surface that are relatively arranged, and a third mounting surface connecting the first mounting surface and the second mounting surface. The first mounting surface, the second mounting surface and the third mounting surface together enclose a accommodating cavity. The light-combining prism is arranged in the accommodating cavity, the first light-emitting mechanism is installed on the first mounting surface, the focusing mechanism is installed on the second mounting surface, and the second light-emitting mechanism is installed on the third mounting surface.

[0015] In one embodiment, all of the light emitting mechanisms include:

[0016] a second fixing seat, the second fixing seat being connected to the first fixing seat, the second fixing seat being provided with a first mounting cavity and a second mounting cavity which are arranged opposite to each other, and a light-transmitting opening connecting the first mounting cavity and the second mounting cavity;

[0017] a first convex lens, the first convex lens being disposed in the first mounting cavity; and

[0018] A lamp body is arranged in the second installation cavity and is arranged opposite to the first convex lens through a light-transmitting opening.

[0019] In one embodiment, the first fixing seat is provided with a first mounting opening through which the second fixing seat is at least partially inserted. A positioning boss is convexly provided on the outer peripheral surface of the second fixing seat, and the positioning boss abuts against the edge of the first mounting opening.

[0020] In one embodiment, the medical endoscope light source device further includes:

[0021] Two heat sinks, one of the two heat sinks is disposed on the first mounting surface and connected to the first light emitting mechanism, and the other is disposed on the third mounting surface and connected to the second light emitting mechanism;

[0022] An air guide cover, wherein the air guide cover is disposed on the first mounting surface and the third mounting surface, and the air guide cover and the first fixing seat together enclose an air duct having an air outlet and an air inlet, and the two radiators are both located in the air duct; and

[0023] A fan is arranged in the air outlet or the air inlet.

[0024] In one embodiment, the focusing mechanism includes a second convex lens and a light cone assembly, and the second convex lens and the light cone assembly are arranged in sequence along the optical path of the combined light beam.

[0025] In one embodiment, the medical endoscope light source device further comprises a connection seat, one end of which is connected to the focusing mechanism, and the other end of which is used to connect to the light guide of the endoscope.

[0026] In one embodiment, the medical endoscope light source device also includes a trigger sensor, which is connected to the focusing mechanism and electrically connected to the light emitting mechanism, and the trigger sensor is used to activate the light emitting mechanism when the focusing mechanism is docked to the light guide beam of the endoscope.

[0027] The above-mentioned medical endoscope light source device can output light of different wavelengths by setting at least two light-emitting mechanisms, and at the same time, by setting a light-combining prism at the intersection of the light output paths of different light-emitting mechanisms, the light-combining prism can fuse the light of different wavelengths output by each light-emitting mechanism and output it to form a light-combining beam, thereby outputting light of mixed wavelengths. For example, white light can be fused with special light of narrow wavelength (such as infrared light, near-infrared light, etc.) that can improve the recognition of biological tissue to form a light-combining beam with both white light wavelength and special light wavelength, thereby greatly increasing the wavelength breadth of the light output by the light source device, thereby improving the recognition of biological tissue by the endoscope, so that the endoscope can obtain a clearer field of view. At the same time, by arranging a focusing mechanism on the optical path of the light-combining beam, the focusing mechanism can focus the light-combining beam, greatly reducing the output light spot of the light-combining beam. On the one hand, the energy of the light-combining beam is more concentrated, the brightness is improved, and the clarity of the field of view obtained by the endoscope is improved; on the other hand, the required diameter of the light guide beam of the endoscope can also be reduced, so that the overall size of the endoscope is more compact and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application.

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the various elements are drawn only as examples in the drawings and are not necessarily drawn according to the true scale.

[0031] FIG. 1 is a schematic structural diagram of a medical endoscope light source device according to an embodiment.

[0032] FIG. 2 is a schematic structural diagram of the light source device shown in FIG. 1 with the air guide cover and the fan hidden.

[0033] FIG. 3 is a top view of the light source device shown in FIG. 2 .

[0034] FIG. 4 is a cross-sectional view of the light source device shown in FIG. 3 taken along the AA cross section.

[0035] Description of reference numerals:

[0036] 10. First light-emitting mechanism; 11. Second fixing seat; 111. Positioning boss; 12. First convex lens; 13. Lamp body; 20. Second light-emitting mechanism; 30. Light-combining prism; 31. Translucent surface; 32. Reflective surface; 40. Focusing mechanism; 41. Second convex lens; 42. Light cone assembly; 50. Connecting seat; 51. Spring positioning bead; 60. Trigger sensor; 70. First fixing seat; 71. First mounting surface; 72. Second mounting surface; 73. Third mounting surface; 74. Support plate; 81. Heat sink; 82. Wind guide cover; 83. Fan; 84. Third fixing seat. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0038] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0039] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0040] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0041] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0042] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0043] As mentioned above, in traditional medical endoscopes, the light source device can usually only output a single white light, and the wavelength range of white light is limited. In some special scenarios such as turbid environments, it is difficult to obtain a clear field of view with a single white light. In addition, the light emitting area of ​​the traditional light source device is too large, which easily leads to an output light spot that is too large. On the one hand, it will disperse the brightness of the light source, thereby affecting the image clarity. On the other hand, an output light spot that is too large will also cause the overall structure of the endoscope's light guide to be too large, which is inconvenient for doctors to operate.

[0044] Based on this, an embodiment of the present application provides a medical endoscope light source device, which can be used in an endoscope to illuminate the camera of the endoscope. Specifically, referring to Figures 1 to 3, the light source device of one embodiment includes at least two light-emitting mechanisms, a light-combining prism 30 and a focusing mechanism 40. At least two light-emitting mechanisms are respectively used to output light of different wavelength bands, and the light-emitting optical paths of different light-emitting mechanisms are arranged to intersect. Among them, the light-emitting optical path of the light-emitting mechanism refers to the propagation path of the light output by the light-emitting mechanism. The light-combining prism 30 is arranged at the intersection of the light-emitting optical paths of each light-emitting mechanism, and the light-combining prism 30 is used to merge the light output by each light-emitting mechanism to form a combined light beam. The focusing mechanism 40 is arranged on the optical path of the combined light beam, and the focusing mechanism 40 is used to focus the combined light beam.

[0045] The above-mentioned light source device can output light of different wavelength bands by setting at least two light-emitting mechanisms, and at the same time, by setting a light-combining prism 30 at the intersection of the light output paths of different light-emitting mechanisms, the light-combining prism 30 can fuse the light of different wavelength bands output by each light-emitting mechanism and output it to form a combined light beam, thereby outputting light of mixed wavelength bands. For example, white light can be fused with special light of narrow wavelength (such as infrared light, near-infrared light, etc.) that can improve the recognition of biological tissue to form a combined light beam with both white light wavelength and special light wavelength, thereby greatly increasing the wavelength breadth of the light output by the light source device, thereby improving the recognition of biological tissue by the endoscope, so that the endoscope can obtain a clearer field of view. At the same time, by arranging a focusing mechanism 40 on the optical path of the combined light beam, the focusing mechanism 40 can focus the combined light beam, greatly reducing the output light spot of the combined light beam. On the one hand, the energy of the combined light beam is more concentrated, the brightness is improved, and the clarity of the field of view obtained by the endoscope is improved; on the other hand, the required diameter of the light guide beam of the endoscope can also be reduced, so that the overall size of the endoscope is more compact and easy to operate.

[0046] Referring to FIG. 3 , optionally, in one embodiment, there are two light-emitting mechanisms, namely, a first light-emitting mechanism 10 and a second light-emitting mechanism 20, wherein the first light-emitting mechanism is used to output light of a first wavelength band, and the second light-emitting mechanism is used to output light of a second wavelength band, and the optical path of the second wavelength band light is arranged to intersect with the optical path of the first wavelength band light, and the light-combining prism 30 is arranged at the intersection of the optical path of the second wavelength band light and the optical path of the first wavelength band light. Furthermore, the light-combining prism 30 is configured to transmit the light of the first wavelength band and reflect the light of the second wavelength band, so as to realize the fusion of the light of the first wavelength band and the light of the second wavelength band to form a light beam.

[0047] Specifically, referring to FIG3 , the optical path of the first band of light is perpendicular to the optical path of the second band of light at 90°, and the light-combining prism 30 has a light-transmitting surface 31 and a light-reflecting surface 32 that are arranged opposite to each other, and the light-transmitting surface 31 faces the first light-emitting mechanism 10, and the light of the first band of light can penetrate the light-combining prism 30 and be emitted along the optical path of the light beam of the combined light. Specifically, the light of the first band of light enters the light-combining prism 30 from the light-transmitting surface 31 at an incident angle of 45° and is emitted from the light-reflecting surface 32 at the same angle of 45°, thus ensuring that the optical path of the light of the first band of light before incidence is consistent with that after transmission. The reflective surface 32 faces the second light-emitting mechanism 20, and the reflective surface 32 is set at a 45° angle to the optical path of the second band light. The second band light can be reflected on the reflective surface 32 and emitted along the optical path of the combined light beam, that is, the second band light is reflected on the reflective surface 32 at an incident angle of 45°. According to the principle of light reflection, the optical path of the second band light after reflection will be at an angle of 90° with the incident optical path. In this way, the optical path of the first band light after transmission coincides with the optical path of the second band light after reflection, thereby realizing the fusion of the first band light and the second band light to form a combined light beam.

[0048] Preferably, the first band light can be white light, and the second band light can be narrow wavelength light, for example, the second band light can be infrared light, near infrared light, etc., which is not limited here. The light combining prism 30 can transmit the first band light and reflect the second band light by setting an internal film structure, which is not described in detail here.

[0049] It is worth noting that the number of light-emitting mechanisms is not limited to two. In other embodiments, the number of light-emitting mechanisms can be more. For example, a third light-emitting mechanism for outputting a third-band light can be added, and the optical path of the third-band light can be made to intersect with the optical path of the first-band light, and a light-combining prism 30 can be set at the intersection of the optical path of the third-band light and the optical path of the first-band light, so that the first-band light and the second-band light are fused at the first light-combining prism 30 to form a combined light beam, and then are fused with the third-band light at the second light-combining prism 30. Similarly, more light-emitting mechanisms such as a fourth light-emitting mechanism and a fifth light-emitting mechanism can be set, so that light of more wavelengths can be fused, which will not be described in detail here.

[0050] Referring to FIG. 3 , in one embodiment, the light source device further includes a first fixing seat 70, which is a hollow frame structure. The first fixing seat 70 includes a first mounting surface 71 and a second mounting surface 72 that are arranged opposite to each other, and a third mounting surface 73 that connects the first mounting surface 71 and the second mounting surface 72. The first mounting surface 71, the second mounting surface 72, and the third mounting surface 73 together enclose a receiving cavity, and the light-combining prism 30 is arranged in the receiving cavity. The first light-emitting mechanism 10 is mounted on the first mounting surface 71, the focusing mechanism 40 is mounted on the second mounting surface 72, and the second light-emitting mechanism 20 is mounted on the third mounting surface 73. In this way, the installation angle requirements of the first light-emitting mechanism 10, the second light-emitting mechanism 20, the light-combining prism 30, and the focusing mechanism 40 can be met, and the overall structure of the light source device is more reasonable and compact. Further, the light source device further includes a support plate 74, which is connected to one side of the first fixing seat 70, and the light-combining prism 30 is fixed to the support plate 74 by screws or other threaded parts.

[0051] Referring to FIG. 4 , the first light-emitting mechanism 10 and the second light-emitting mechanism 20 both include a second fixing seat 11, a first convex lens 12 and a lamp body 13. The second fixing seat 11 is connected to the first fixing seat 70, and the second fixing seat 11 is provided with a first mounting cavity and a second mounting cavity disposed opposite to each other, and a light-transmitting port connecting the first mounting cavity and the second mounting cavity. The first convex lens 12 is disposed in the first mounting cavity. The lamp body 13 is disposed in the second mounting cavity and is disposed opposite to the first convex lens 12 through the light-transmitting port, so that the light output by the lamp body 13 can be directed toward the first convex lens 12 through the light-transmitting port, and then directed toward the light-combining prism 30 after being focused by the first convex lens 12. Preferably, the lamp body 13 can be an LED lamp, and different light-emitting mechanisms can output light of different wavelengths by adjusting the lamp body 13.

[0052] Furthermore, the first fixing seat 70 is provided with a first installation opening that passes through, and at least part of the second fixing seat 11 is inserted into the first installation opening. The outer peripheral surface of the second fixing seat 11 is provided with a positioning boss 111, and the positioning boss 111 is abutted and matched with the edge of the first installation opening, so that the light-emitting mechanism can be positioned, the installation positioning accuracy of the light-emitting mechanism can be improved, and the light conductivity can be improved. Preferably, the second fixing seat 11 can be fixed in the first installation opening by glue.

[0053] Referring to FIG. 1 and FIG. 2 , the light source device further includes two heat sinks 81, an air duct 82 and a fan 83, wherein one of the two heat sinks 82 is disposed on the first mounting surface 71 and connected to the first light-emitting mechanism 10, and the other is disposed on the third mounting surface 73 and connected to the second light-emitting mechanism. Preferably, each light-emitting mechanism further includes a third fixing seat 84, the third fixing seat 84 is connected to the first fixing seat 70, and the heat sink 81 is fixed on the third fixing seat 84 and connected to the lamp body 13. The air duct 82 is disposed on the first mounting surface 71 and the third mounting surface 73, and the air duct 82 and the first fixing seat 70 are jointly enclosed to form an air duct having an air outlet and an air inlet, the two heat sinks 81 are both located in the air duct, and the fan 83 is disposed in the air outlet or the air inlet to blow or draw air into the air duct. In this way, the heat generated by the lamp body 13 during operation can be transferred to the radiator 81, and then the fan 83 blows or draws air into the air duct to remove the heat on the radiator 81, thereby achieving heat dissipation of the lamp body 13. Preferably, the radiator 81 is a copper alloy radiator 81, thereby improving the heat dissipation effect.

[0054] Referring to Figure 4, the focusing mechanism 40 includes a second convex lens 41 and a light cone assembly 42. The second convex lens 41 and the light cone assembly 42 are arranged in sequence along the optical path of the combined light beam, so that when the combined light beam passes through the second convex lens 41, the spot area of ​​the combined light beam is initially reduced, and then the combined light beam passes through the light cone assembly 42. A conical lens is arranged in the light cone assembly 42, so that the spot area of ​​the combined light beam can be further reduced, and the energy of the combined light beam can be concentrated, so that the brightness of the combined light beam is higher, the clarity of the field of view can be improved, and at the same time, the diameter of the light guide beam of the endoscope can be made very small, which is also conducive to reducing the structure of the mirror end.

[0055] Furthermore, the second mounting surface 72 of the first fixing seat 70 is provided with a penetrating second mounting opening, the second convex lens 41 is fixed in the second mounting opening, and the light cone assembly 42 is connected to the side of the second mounting surface 72 away from the first mounting surface 71 by screws or the like.

[0056] Referring to FIG3 , optionally, in one embodiment, the light source device further comprises a connection seat 50, one end of which is connected to the focusing mechanism 40, and the other end of which is used to connect to the light guide of the endoscope. The focusing mechanism 40 and the light guide are connected by the connection seat 50, so that the focusing mechanism 40 and the light guide are connected, so that the combined light beam is focused by the focusing mechanism 40 and then injected into the light guide, and then transmitted to the front end of the endoscope through the light guide. Preferably, referring to FIG4 , the inner wall of the connection seat 50 is provided with a spring positioning bead 51, and the spring positioning bead 51 is used to lock the light guide.

[0057] Referring to Fig. 2, the light source device further includes a trigger sensor 60, which is connected to the focusing mechanism 40 and electrically connected to the light emitting mechanism. The trigger sensor 60 is used to start the light emitting mechanism when the focusing mechanism 40 is docked to the light guide of the endoscope. Preferably, the trigger sensor 60 is a pressure sensor, which is connected between the connection seat 50 and the light cone assembly 42, so that when the light guide penetrates the connection seat 50 and is connected in place, the light guide abuts against the pressure sensor, thereby triggering the pressure sensor, and at this time the pressure sensor sends a trigger signal, and the first light emitting mechanism 10 and the second light emitting mechanism 20 can start working.

[0058] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A medical endoscope light source device, characterized in that: include: At least two light-emitting mechanisms, wherein the at least two light-emitting mechanisms are respectively used to output light of different wavelength bands, and light output paths of different light-emitting mechanisms are arranged to intersect; A light-combining prism, which is arranged at the intersection of the light-emitting light paths of the light-emitting mechanisms, and is used to combine the light output by the light-emitting mechanisms to form a combined light beam; as well as, A focusing mechanism, which is arranged on the optical path of the combined light beam and is used to focus the combined light beam; The medical endoscope light source device also includes a connecting seat, one end of which is connected to the focusing mechanism, and the other end of which is used to connect the light guide.

2. The medical endoscope light source device according to claim 1, characterized in that: The at least two light emitting mechanisms include: A first light emitting mechanism, the first light emitting mechanism is used to output light of a first wavelength band; and A second light-emitting mechanism, the second light-emitting mechanism is used to output a second-band light, the optical path of the second-band light is arranged to intersect with the optical path of the first-band light, the light-combining prism is arranged at the intersection of the optical path of the second-band light and the optical path of the first-band light, and the light-combining prism is configured to be able to transmit the first-band light and reflect the second-band light.

3. The medical endoscope light source device according to claim 2, characterized in that: The optical path of the first-band light is arranged perpendicularly to the optical path of the second-band light. The light-combining prism has a light-transmitting surface and a light-reflecting surface arranged opposite to each other. The light-transmitting surface faces the first light-emitting mechanism. The light of the first-band light can penetrate the light-combining prism and be emitted along the optical path of the combined light beam. The light-reflecting surface faces the second light-emitting mechanism, and the light-reflecting surface is arranged at an angle of 45° to the optical path of the second-band light. The light of the second-band light can be reflected on the light-reflecting surface and be emitted along the optical path of the combined light beam.

4. The medical endoscope light source device according to claim 2, characterized in that: The medical endoscope light source device also includes a first fixing seat, which is a hollow frame structure. The first fixing seat includes a first mounting surface and a second mounting surface that are relatively arranged, and a third mounting surface connecting the first mounting surface and the second mounting surface. The first mounting surface, the second mounting surface and the third mounting surface together enclose a receiving cavity. The light-combining prism is arranged in the receiving cavity. The first light-emitting mechanism is installed on the first mounting surface, the focusing mechanism is installed on the second mounting surface, and the second light-emitting mechanism is installed on the third mounting surface.

5. The medical endoscope light source device according to claim 4, characterized in that: All of the light emitting mechanisms described include: a second fixing seat, the second fixing seat being connected to the first fixing seat, the second fixing seat being provided with a first mounting cavity and a second mounting cavity which are arranged opposite to each other, and a light-transmitting opening connecting the first mounting cavity and the second mounting cavity; a first convex lens, the first convex lens being disposed in the first mounting cavity; and A lamp body is arranged in the second installation cavity and is arranged opposite to the first convex lens through the light-transmitting opening.

6. The medical endoscope light source device according to claim 5, characterized in that: The first fixing seat is provided with a first mounting opening through which the second fixing seat is at least partially inserted. A positioning boss is convexly provided on the outer peripheral surface of the second fixing seat, and the positioning boss abuts against the edge of the first mounting opening.

7. The medical endoscope light source device according to claim 4, characterized in that: The medical endoscope light source device also includes: Two heat sinks, one of the two heat sinks is disposed on the first mounting surface and connected to the first light emitting mechanism, and the other is disposed on the third mounting surface and connected to the second light emitting mechanism; An air guide cover, wherein the air guide cover is disposed on the first mounting surface and the third mounting surface, and the air guide cover and the first fixing seat together enclose an air duct having an air outlet and an air inlet, and the two radiators are both located in the air duct; and A fan is arranged at the air outlet or the air inlet.

8. The medical endoscope light source device according to claim 1, characterized in that: The focusing mechanism comprises a second convex lens and a light cone assembly, and the second convex lens and the light cone assembly are arranged in sequence along the optical path of the combined light beam.

9. The medical endoscope light source device according to any one of claims 1 to 8, characterized in that: The medical endoscope light source device also includes a trigger sensor, which is connected to the focusing mechanism and electrically connected to the light emitting mechanism. The trigger sensor is used to start the light emitting mechanism when the focusing mechanism is docked to the light guide beam.

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