WO2023160172A1

WO2023160172A1 - Swing filter, illumination device for endoscope, and medical endoscope

Info

Publication number: WO2023160172A1
Application number: PCT/CN2022/140242
Authority: WO
Inventors: 张剑; 刘孟华; 沈和良; 万继宪
Original assignee: 杭州莱恩瑟特医疗技术有限公司
Priority date: 2022-02-25
Filing date: 2022-12-20
Publication date: 2023-08-31
Also published as: CN114305300A; TW202335622A; TWI814670B; CN114305300B

Abstract

A swing filter (10), an illumination device (1) for an endoscope, and a medical endoscope. The swing filter (10) comprises: a limiting base (11), which is provided with an optical window (1101) and a limiting portion (1102); a swing assembly (12), which is provided with a light transmitting portion (1201) and a light filtering portion (1202) both arranged around a swing axis (120); and a driving mechanism (13), which is drivably connected to the swing assembly (12). The swing assembly (12) is swingably arranged on the limiting base (11), and the gravity center (O) of the swing assembly (12) deviates from the swing axis (120) of the swing assembly (12). When the driving mechanism (13) drives the swing assembly (12) to rotate positively, the swing assembly (12) abuts against the limiting portion (1102) positively under the action of the gravity of the swing assembly, such that the light transmitting portion (1201) is kept aligned with the optical window (1101). When the driving mechanism (13) drives the swing assembly (12) to rotate reversely, the swing assembly (12) abuts against the limiting portion (1102) reversely under the action of the gravity of the swing assembly, such that the light filtering portion (1202) is kept aligned with the optical window (1101).

Description

Wobble filter, illumination device for endoscope, and medical endoscope

technical field

The present application relates to the technical field of endoscopes, in particular to a swing filter, an illumination device for an endoscope and a medical endoscope.

Background technique

In the medical field, endoscopes that can be inserted into body cavities are widely used to observe digestive tracts such as esophagus, stomach and intestinal tract or trachea such as lungs, so as to facilitate medical diagnosis or surgical treatment by medical staff. Since the body cavity is a dark environment, and the image processing device of the endoscope needs to be in a light environment to obtain images in the body cavity for observation, so the existing endoscope usually needs to be equipped with a lighting device to provide illumination to the body cavity Light, so that the image processing device can work normally.

It is well known that the formation of tumors is accompanied by angiogenesis, and angiogenesis will cause differences in the color and texture of early cancerous parts and surrounding normal tissues. In addition, changes in the morphology of blood vessels in the mucosa are also considered to be directly related to the occurrence and progression of dysplasia or tumors. Early tumors in the digestive tract often manifest as flat or depressed microscopic mucosal lesions and abnormal microvascular changes. However, it is difficult to observe the above-mentioned changes in microvessels under ordinary white-light endoscopy. If the inspection equipment can highlight the morphology of microvessels, it will be able to effectively improve the detection rate of early cancer.

Oxygenated hemoglobin and deoxygenated hemoglobin in the blood have a strong effect on certain specific narrow-band spectra. For example, the blue light band has a shallower penetration depth, which can better display blood vessels on the surface of the mucosa, while the green light band has a deeper penetration depth. It can better display blood vessels in the middle layer, so the existing endoscopes not only use white light for routine observation, but also use special light such as narrow-band light to observe deep blood vessels. For example, Chinese invention patent CN103501683A discloses an endoscope device, which is based on narrow-band image enhancement technology, which can enhance the display of the structure of mucosal tissue and microvessels, improve the contrast between diseased tissue and surrounding normal tissue, and then clearly display the digestive tract The microstructure of the mucous membrane.

However, the illuminating device in this endoscopic device usually uses a high-speed rotating filter disc to filter the xenon lamp light source, wherein a plurality of narrow-band filters of different wavelength bands are arranged on the filter disc along the circumference, and the filter disc Rotating continuously, the white light emitted by the xenon lamp is sequentially filtered by a variety of narrow-band filters to form a sequential narrow-band spectral sequence to irradiate the surface of the tissue to be detected, and then obtain a narrow-band image of the tissue through an image processing device. In this way, on the one hand, the existing rotary filter not only needs to use an expensive servo motor to work continuously, which affects the life of the motor, but also needs to be equipped with a complex control processing system to be able to decompose and process the spectral frequency bands and finally obtain the desired value. On the other hand, different filters in the existing rotary filter have switching flicker, and the post-data processing is complicated, which will lead to high cost of the endoscope.

In order to solve this problem, some manufacturers propose to use multiple light sources to filter light first, and then combine beams to reduce the requirements for back-end hardware. For example, Chinese invention patent CN104523214A discloses a narrow-band imaging endoscope device. The light source structure includes a narrowband light source that provides a narrowband spectrum and a broadband light source that provides a broadband spectrum. The narrowband light source includes a blue LED that provides a narrowband blue light, a green LED that provides a narrowband green light, and a red LED that provides a narrowband red light. For white light LEDs, each light source is correspondingly provided with a condensing lens to condense the light emitted by each light source. However, this kind of endoscope lighting device using multiple LEDs needs to design a complex optical path, and the manufacturing cost is high, and the light source debugging is complicated due to inconsistent attenuation caused by long-term operation of LEDs of different colors, and the operating cost is also high.

Contents of the invention

The object of the present invention is to provide a oscillating filter, an illumination device for an endoscope and a medical endoscope, which can simplify the structure, reduce the cost, and help the application and popularization of the disposable endoscope.

In order to solve the above technical problems, the present invention provides a swing filter, comprising:

A limit base, wherein the limit base is provided with a light window and a limit portion;

A swing assembly, wherein the swing assembly is swingably arranged on the limit base, and the center of gravity of the swing assembly deviates from the swing axis of the swing assembly, wherein the swing assembly is provided with a light-transmitting part and a filter part arranged around the swing axis; and

The drive mechanism, wherein the drive mechanism is drivably connected to the swing assembly, is used to bidirectionally drive the swing assembly to swing relative to the limit base, wherein when the drive mechanism drives the swing assembly to rotate forward, the swing assembly is under the action of its own gravity positively against the limit portion of the limit base, so that the light-transmitting portion remains aligned with the light window of the limit base, wherein when the drive mechanism drives the swing assembly to rotate in reverse, the swing assembly is under the action of its own gravity The lower part is reversely abutted against the limiting part, so that the filter part is kept aligned with the light window.

With the above technical solution, the swing filter can be stably maintained in two different filtering states under the gravity of the swing component, not only does not need to use expensive servo motors, but also does not require the motor to work continuously, which helps to extend the length of the motor service life and reduce costs. In other words, the swing filter can use an inexpensive motor as the driving mechanism, and only needs to apply a positive or reverse initial driving force to the swing component to realize the forward swing or reverse swing of the swing component to achieve two filtering states The switching without complicated control system helps to further reduce the endoscope cost.

According to an embodiment of the present application, the center of gravity of the swing assembly is located above the horizontal plane where the swing axis is located.

By adopting the above technical solution, the swing component only needs to swing at a small angle to switch between two different filtering states, which facilitates the reduction of the driving stroke and shortens the working time of the motor.

According to an embodiment of the present application, the swing assembly includes a swing shaft defining a swing axis, a swing member extending radially downward from the swing shaft, and a counterweight extending radially upward from the swing shaft, wherein the mass of the counterweight is greater than The quality of the oscillating piece, and the light-transmitting part and the light-filtering part are correspondingly arranged on the oscillating piece.

By adopting the above technical solution, the counterweight and the swinging member cooperate with each other to ensure that the center of gravity of the swinging assembly is located above the swinging axis, which helps to simplify the structure of the swinging assembly and facilitate processing.

According to an embodiment of the present application, the light-transmitting part and the light-filtering part in the swing assembly are arranged axisymmetrically on the swinging member, and the center of the light-transmitting part, the center of the light-filtering part and the center of the light window are respectively separated from the swing axis. The radial distances are the same.

With the above technical solution, when the swing assembly swings around the swing axis, the light-transmitting part and the light-filtering part can move on the same circle, so that they can be precisely aligned with the light window to achieve the required light-filtering effect.

According to an embodiment of the present application, the light window of the position-limiting base is located directly below the swing axis, and the reference plane where the axis of symmetry between the light-transmitting part and the filter part is located passes through the center of gravity and the swing axis of the swing assembly.

By adopting the above technical solution, the forward and reverse initial driving force applied by the driving mechanism to the swing assembly can be kept the same, which helps to reduce the applied initial driving force, so that a motor with a lower power can be selected and the cost can be reduced.

According to an embodiment of the present application, the center of gravity of the swing assembly is located at the side front or side rear of the swing shaft.

With the above technical solution, when the center of gravity of the swing assembly is located directly above the swing axis, the stability of the swing assembly becomes worse, and it is easier to be driven to swing left or right, which helps to further reduce the applied driving force and facilitates Use a motor with less power.

According to an embodiment of the present application, the swing member includes a fan-shaped swing plate and a double-pass filter provided with a light-transmitting hole and a filter hole, wherein the light-transmitting hole of the fan-shaped swing plate is used as the light-transmitting part of the swing assembly, and the double-pass The filter is correspondingly arranged in the filter hole of the fan-shaped swing plate to serve as the filter part of the swing assembly.

By adopting the above technical solution, the fan-shaped swing plate is suitable for reserving enough space at a position away from the swing axis, so as to open the light-transmitting hole and the light-filtering hole. At the same time, the swing filter can use a double-pass filter to filter white light into composite illumination light composed of blue light and green light, so as to emphasize and display the superficial blood vessels and middle and deep blood vessels in the body cavity.

According to an embodiment of the present application, the counterweight is a sector-shaped counterweight, wherein the sector-shaped counterweight integrally extends upwardly from the pendulum shaft, and the fan-shaped swing plate integrally extends downwardly from the pendulum shaft.

By adopting the above-mentioned technical solution, the fan-shaped counterweight only needs a relatively small volume to achieve the required partial weight effect, which helps to reduce the overall volume.

According to an embodiment of the present application, the thickness of the sector-shaped counterweight is greater than the thickness of the sector-shaped swing plate.

By adopting the above technical solution, while realizing the required bias effect, the radial size of the fan-shaped counterweight can be smaller than the radial size of the fan-shaped swing plate, which helps to reduce the space occupied by the fan-shaped counterweight when swinging, so as to improve Structural compactness.

According to an embodiment of the present application, the driving mechanism is a drive motor fixed on the limit base, and the output shaft of the drive motor is drivably connected to the swing shaft of the swing assembly, wherein the limit base includes a base body, a cover body and a limit rod, and the base body is provided with a swing cavity, a drive cavity communicated with the swing cavity, and a light hole, wherein the limit rod is correspondingly arranged on the base body as a limit portion of the limit base, and the light transmission hole of the base body The hole runs through the swing cavity as a light window of the limit base, wherein the drive mechanism is fixedly installed in the drive cavity of the base body, and the swing assembly is swingably accommodated in the swing cavity of the base body, wherein the cover is detachably mounted on The base body is used to cover the swing cavity of the base body.

With the above technical solution, the drive motor can directly drive the swing assembly to swing left or right without additional transmission mechanism, which helps to simplify the structure and reduce the cost. At the same time, the swing assembly swings in the closed swing chamber to avoid interference from the external environment.

According to an embodiment of the present application, the swing filter further includes a sensor assembly, wherein the sensor assembly includes a positioning member provided on the swing assembly and a first in-position sensor and a second in-position sensor respectively provided on the limit base correspondingly, And when the locating member is aligned with the first in-position sensor or the second in-position sensor as the oscillating assembly swings, the first in-position sensor or the second in-position sensor is triggered to send a corresponding positioning signal.

With the above technical solution, the swing filter can judge whether the swing component swings in place according to whether there is a positioning signal, and determine whether the light-transmitting part or the light-filtering part is aligned with the light window according to the source of the positioning signal, so as to accurately judge the filtering state.

According to another aspect of the present application, an embodiment of the present application further provides an illumination device for an endoscope, comprising:

A wobble filter of any of the above; and

A light source assembly for emitting illumination light, wherein the light source assembly is correspondingly arranged on the light-incoming side of the swing filter, and the swing filter is located in the illumination light path of the light source assembly.

With the above technical solution, the illumination light from the light source assembly first passes through the swing filter, and then is transmitted to the measured object for illumination, so that the provided illumination conditions can be changed through the state switching of the swing filter.

According to one embodiment of the present application, the light source assembly includes a light emitting element and a light shaping assembly that is correspondingly arranged between the light emitting element and the swing filter, wherein the light shaping assembly includes a light cone and a lens, and the light cone is arranged on the light emitting element and between the lenses.

With the above technical solution, the illuminating light emitted by the light-emitting element is firstly shaped and then transmitted to the swing filter for filtering, which helps to reduce the loss of illuminating light while ensuring a good filtering effect, and improves the subsequent Lighting intensity.

According to an embodiment of the present application, the lighting device for endoscope further includes a heat sink that is thermally conductively connected to the light source assembly, wherein the heat sink includes a heat sink set and a heat conduction pipe, and one end of the heat conduction pipe is attached to the light source assembly The back of the light-emitting element, and the other end is connected to the heat sink group.

With the above technical solution, the heat conduction pipe can conduct the heat generated by the light-emitting element to the heat sink group for heat dissipation, which helps to improve the heat dissipation efficiency.

According to an embodiment of the present application, the illumination device for endoscope further includes a fiber coupler correspondingly arranged on the light output side of the swing filter, wherein the fiber coupler includes a ball lens and a fiber beam splitter, and the ball lens is located on the swing filter. between the filter and the fiber splitter.

With the above technical solution, the illumination light emitted from the swing filter is first focused by the ball lens, and then split by the optical fiber beam splitter, so as to be transmitted along two or more optical fibers to meet the dual requirements of medical endoscopes. The need for lighting channels or multiple lighting channels.

According to another aspect of the present application, an embodiment of the present application further provides a medical endoscope, comprising:

endoscope body; and

In any one of the above-mentioned illuminating devices for endoscopes, wherein the illuminating device for endoscopes is connected to the main body of the endoscope through an optical fiber, and is used to provide illumination light for the main body of the endoscope.

By adopting the above technical solution, the structure of the medical endoscope is simplified, the cost is reduced, and it is helpful for the application and popularization of the disposable endoscope.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the conventional technology. Obviously, the accompanying drawings in the following description are only examples For some embodiments of the application, those skilled in the art can also obtain other drawings based on these drawings without creative work.

FIG. 1 is a three-dimensional schematic diagram of a swing filter provided by an embodiment of the present application;

FIG. 2 shows an exploded schematic diagram of a swing filter according to the above-mentioned embodiment of the present application;

FIG. 3 shows a schematic cross-sectional view of a swing filter according to the above-mentioned embodiment of the present application;

FIG. 4 shows a schematic diagram of the principle of switching the filtering state of the swing filter according to the above-mentioned embodiment of the present application;

FIG. 5 is a schematic perspective view of an illumination device for an endoscope provided by an embodiment of the present application;

Fig. 6 shows a schematic cross-sectional view of an illumination device for an endoscope according to the above-mentioned embodiment of the present application;

FIG. 7 shows an exploded schematic diagram of an illumination device for an endoscope according to the above-mentioned embodiment of the present application;

Fig. 8 is a schematic structural diagram of a medical endoscope equipped with the above-mentioned illuminating device for endoscope provided by an embodiment of the present application.

Reference signs: 1. Illumination device for endoscope; 10. Swing filter; 11. Limit base; 1101. Light window; 1102. Limit part; 111. Base body; 1111. Swing cavity; 1112. Drive cavity 1113, light hole; 112, cover body; 113, limit rod; 12, swing assembly; 120, swing axis; 1201, light-transmitting part; 1202, filter part; 121, swing shaft; 1220, fan-shaped swing plate; 1221, light-transmitting hole; 1222, filter hole; 1223, double-pass filter; 1224, fixed ring plate; 123, counterweight; 1230, fan-shaped counterweight; 13, drive mechanism; 130. Drive motor; 131. Output shaft; 14. Sensor assembly; 141. Positioning member; 142. First in-position sensor; 143. Second in-position sensor; 20. Light source assembly; 21. Light-emitting element; 22. Light shaping assembly; 221, light cone; 222, lens; 23, infrared cutoff film; 24, light source cover; 30, fiber optic coupler; 31, ball lens; 32, optical fiber beam splitter; 40, radiator; 41, heat sink group; 42 , heat pipe; 50, shell; 2, endoscope main body; 3, optical fiber; O, center of gravity.

Detailed ways

In order to make the above-mentioned purpose, features and advantages of the present application more obvious and understandable, the specific implementation manners of the present application will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, the present application can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

It should be noted that when a component is referred to as being “fixed on” or “set on” another component, it may be directly on the other component or there may also be an intervening component. When a component is said to be "connected" to another component, it may be directly connected to the other component or there may be intervening components at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for the purpose of illustration only and do not represent the only implementation Way.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In this application, unless otherwise clearly specified and limited, a first feature is "on" or "under" a second feature, which means that the first feature is directly in contact with the second feature, or that the first feature and the second feature are indirectly in contact with each other. contact through an intermediary. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or it just means that the first feature is higher in level than the second feature. "Below", "beneath" and "under" the first feature may mean that the first feature is directly below or obliquely below the second feature, or it just means that the level of the first feature is smaller than that of the second feature.

Unless otherwise defined, all technical and scientific terms used in the description of the present application have the same meaning as commonly understood by those skilled in the technical field of the present application. The terms used in the description of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The term "and/or" used in the specification of the present application includes any and all combinations of one or more related listed items.

Considering that the rotary filter used in the existing endoscope lighting device not only needs to use an expensive servo motor to work continuously, which affects the life of the motor, but also has switching strobes of different filters on it, resulting in complex data processing in the later stage. The cost of endoscopes remains high. The present application provides a swing filter, an illumination device for an endoscope and a medical endoscope, which not only do not need to use an expensive servo motor, but also do not require the motor to work continuously, which helps to prolong the service life of the motor. The cost is reduced, and the application and popularization of the disposable endoscope are facilitated.

Specifically, referring to accompanying drawings 1 to 4, an embodiment of the present application provides a swing filter 10, which may include a limit base 11 provided with a light window 1101 and a limit portion 1102, and a swing assembly 12 And drive mechanism 13. The swing assembly 12 is swingably arranged on the limit base 11, wherein the center of gravity O of the swing assembly 12 deviates from the swing axis 120 of the swing assembly 12, and the swing assembly 12 is provided with a light-transmitting part 1201 and a filter arranged around the swing axis 120. Light section 1202 . The driving mechanism 13 is drivably connected to the swing assembly 12 for bidirectionally driving the swing assembly 12 to swing relative to the limit base 11 . When the driving mechanism 13 drives the swing assembly 12 to rotate forward, the swing assembly 12 will positively abut against the limit portion 1102 of the limit base 11 under the action of its own gravity, so that the light-transmitting portion 1201 of the swing assembly 12 remains aligned. The light window 1101 of the quasi-limiting base 11. When the driving mechanism 13 drives the swing assembly 12 to rotate in the opposite direction, the swing assembly 12 will reversely abut against the limit portion 1102 of the limit base 11 under the action of its own gravity, so that the filter portion 1202 of the swing assembly 12 remains aligned. The light window 1101 of the quasi-limiting base 11.

It is worth noting that, as shown in FIG. 4 , it is precisely because the center of gravity O of the swing assembly 12 of the present application deviates from the swing axis 120 of the swing assembly 12 , and when the swing assembly 12 abuts against the limit portion 1102 forward or reverse, Under the action of its own weight, the swing assembly 12 will correspondingly have a tendency to continue to rotate forward or reverse, so even if the driving force applied by the drive mechanism 13 to the swing assembly 12 is removed, the swing assembly 12 can still be stably maintained at the limit. The position of the position portion 1102 is such that the light-transmitting portion 1201 or the light-filtering portion 1202 of the swing assembly 12 can still be aligned with the light window 1101 of the position-limiting base 11 all the time.

In other words, the driving mechanism 13 of the present application only needs to apply an initial forward or reverse driving force to the swing assembly 12, and the swing assembly 12 can continue to rotate forward or reverse under the action of its own gravity to abut against the stopper. 1102 , so that the light-transmitting part 1201 or the light-filtering part 1202 of the swing assembly 12 is automatically aligned with the light window 1101 of the position-limiting base 11 under the limit of the limit part 1102 . In this way, the swing filter 10 of the present application only needs to use an inexpensive ordinary motor as the driving mechanism 13, and by controlling the normal rotation and reverse rotation of the ordinary motor, it is easy to realize that the swing filter 10 can switch between different filtering states. Switching back and forth precisely helps to reduce the cost of the swing filter 10 , thereby reducing the cost of an endoscope lighting device equipped with the swing filter 10 , and facilitates the application and promotion of disposable endoscopes.

Preferably, the radial distance between the center of the light-transmitting portion 1201 and the swing axis 120 in the swing assembly 12 is equal to the radial distance between the center of the filter portion 1202 and the swing axis 120, so that when the swing assembly 12 rotates around the swing axis When 120 swings, the light-transmitting part 1201 and the light-filtering part 1202 of the swinging assembly 12 can be precisely aligned with the light window 1101 respectively, so that the illumination light passing through the light-window 1101 can accurately pass through the light-transmitting part 1201 or the light-filtering part 1202 respectively. .

More specifically, the light-transmitting portion 1201 of the swing assembly 12 can be implemented as, but not limited to, a light-transmitting hole for allowing the illumination light to pass through directly without filtering the illumination light, so as to provide an unfiltered illumination environment . Correspondingly, the filter part 1202 of the swing assembly 12 may be implemented as, but not limited to, a filter hole provided with a double-pass filter, for filtering the illumination light, so that the narrow-band light of a specific wavelength band in the illumination light passes through, To provide a narrow-band light lighting environment.

It can be understood that although in the above-mentioned embodiments of the present application, the light-transmitting portion 1201 can be implemented as a light-transmitting hole without any filter, in other examples of the present application, the light-transmitting portion 1201 can also be implemented The purpose is to provide a light-transmitting hole of a filter different from that of the double-pass filter, so as to perform different filtering processes on the illumination light and provide different narrow-band lighting environments, which will not be described in detail in this application. In addition, the filter part 1202 of the swing assembly 12 may also be provided with other wavelength bands or other types of filters, as long as the required filtering requirements can be met, which will not be repeated in this application.

Preferably, the filter part 1202 is used to allow blue light with a wavelength range of 410nm to 430nm and green light with a wavelength range of 525nm to 545nm to pass through, so as to form blue-green composite light to irradiate the position to be detected, providing a blue-green lighting environment, and facilitating the acquisition of epidermal Image of blood vessels below.

Exemplarily, as shown in FIG. 4 , taking white light as the illumination light as an example, when the light-transmitting part 1201 of the swing assembly 12 is aligned with the light window 1101 of the position-limiting base 11 , the white light passing through the light window 1101 will directly pass through The light-transmitting part 1201 is used to provide white light illumination. At this time, the swing filter 10 is in a non-filtering state, so that the illumination device for the endoscope can provide white light illumination conditions, and it is convenient to obtain the surface image of the epidermis in the body cavity; and when the filter of the swing component 12 When the light part 1202 is aligned with the light window 1101 of the limit base 11, the illumination light passing through the light window 1101 will first pass through the double-pass filter for narrow-band filtering, and then perform blue-green composite lighting. At this time, the swing filter 10 Being in the blue-green light filtering state, the lighting device for the endoscope can provide blue-green light lighting conditions, which is convenient for acquiring blood vessel images under the epidermis in the body cavity.

In other words, when the drive mechanism 13 drives the swing assembly 12 forward, the swing filter 10 can switch from the blue-green light filtering state to the no-filter state; and when the drive mechanism 13 reversely drives the swing assembly 12, the swing filter 10 can switch from The no-filtering state is switched to the blue-green light filtering state, so that by controlling the forward rotation and reverse rotation of the motor, the swing filter 10 can be easily switched back and forth between the two filtering states precisely. It can be understood that the forward and reverse mentioned in this application refer to the two directions of swing, that is, a pair of opposite rotation directions, that is to say, when the anticlockwise direction is defined as the forward direction, then clockwise direction is reversed; and vice versa. For example, as shown in Figure 4, the forward rotation mentioned in this application refers to the counterclockwise rotation of the swing assembly 12, so that the light-transmitting part 1201 is aligned with the light window 1101; correspondingly, the reverse rotation refers to the swing The assembly 12 is rotated clockwise so that the filter part 1202 is aligned with the light window 1101 .

According to the above-mentioned embodiments of the present application, as shown in FIG. 2 and FIG. 3 , the driving mechanism 13 of the swing filter 10 is implemented as a driving motor 130 fixed on the limit base 11, and the output shaft 131 of the driving motor 130 is along the The swing axis 120 is connected to the swing assembly 12 for applying a driving force to the swing assembly 12 so that the swing assembly 12 swings relative to the limit base 11 .

Preferably, the output shaft 131 of the driving motor 130 is arranged horizontally, so that the swing axis 120 of the swing assembly 12 serves as a horizontal axis, so that the swing assembly 12 can vertically swing around the swing axis 120 under the action of its own gravity, that is, swing Assembly 12 oscillates in a vertical plane.

It is worth noting that, according to the force analysis of the swing assembly 12, it can be seen that, as shown in FIG. 12 center of gravity O, so the drive mechanism 13 of the present application only needs to drive the swing assembly 12 to swing so that the center of gravity O of the swing assembly 12 deviates from the vertical plane where the swing axis 120 is located, and the moment of gravity of the swing assembly 12 is not equal to zero, making the swing The assembly 12 will automatically swing under the action of its own weight until it reaches the limit portion 1102 without further application of driving force.

Preferably, the center of gravity O of the swing assembly 12 is located above the horizontal plane where the swing axis 120 is located. In this way, when the driving mechanism 13 positively drives the swing assembly 12 so that the center of gravity O of the swing assembly 12 crosses the vertical plane where the swing axis 120 is located, the swing assembly 12 will continue to rotate forward under the action of its own gravity until it reaches the limit. When the drive mechanism 13 reversely drives the swing assembly 12 so that the center of gravity O of the swing assembly 12 crosses the vertical plane where the swing axis 120 is located, the swing assembly 12 will continue under the action of its own gravity. Rotate in the opposite direction until it reaches the limiting portion 1102 and is limited.

Optionally, as shown in FIGS. 2 and 4 , the swing assembly 12 may include a swing shaft 121 defining a swing axis 120 , a swing member 122 extending radially downward from the swing shaft 121 , and a swing member 122 extending radially upward from the swing shaft 121 . The counterweight 123, wherein the light-transmitting part 1201 and the filter part 1202 are correspondingly arranged on the swinging part 122, and the mass of the counterweight 123 is greater than the mass of the swinging part 122, so that the center of gravity O of the swinging assembly 12 is biased toward the counterweight 123 .

Preferably, as shown in FIG. 4 , the light-transmitting part 1201 and the light-filtering part 1202 are arranged axisymmetrically on the swing member 122 , and the axis of symmetry between the light-transmitting part 1201 and the light-filtering part 1202 passes through the center of gravity of the swing assembly 12 O and the axis of swing 120. In other words, the light-transmitting part 1201 and the filter part 1202 are symmetrically distributed on the left and right sides of the plane where the center of gravity O of the swing assembly 12 and the swing axis 120 are located, so that when the drive mechanism 13 drives the swing assembly 12 forward to make the swing assembly 12 When the center of gravity O deviates to the left from the vertical plane where the swing axis 120 is located, the swing assembly 12 continues to rotate positively under the action of its own gravity, so that the light-transmitting part 1201 swings to the right to align with the light window of the limit base 11 1101; and when the driving mechanism 13 reversely drives the swing assembly 12 so that the center of gravity O of the swing assembly 12 deviates to the right from the vertical plane where the swing axis 120 is located, the swing assembly 12 continues to rotate in reverse under the action of its own gravity, so that The filter part 1202 swings to the left to align with the light window 1101 of the position limiting base 11 .

More preferably, the light window 1101 of the limiting base 11 is located directly below the swing axis 120 , and the radial distance between the center of the light window 1101 and the swing axis 120 is equal to the distance between the center of the light-transmitting part 1201 and the swing axis 120 radial distance. In this way, the forward and reverse initial driving force applied by the driving mechanism 13 to the swing assembly 12 can be kept the same, which helps to reduce the applied initial driving force, so that a motor with a lower power can be selected and the cost can be reduced.

Optionally, as shown in FIG. 3 , the center of gravity of the swing assembly 12 is located in front of the swing shaft 121 . In this way, when the center of gravity of the swing assembly 12 is located directly above the swing axis 120, the stability of the swing assembly 12 becomes worse, and it is easier to be driven to swing left or right, which helps to further reduce the applied driving force, facilitating Use a motor with less power. It can be understood that, in other examples of the present application, the center of gravity of the swing assembly 12 is located behind the swing shaft 121 , which can still reduce the driving force.

Exemplarily, in an example of the present application, as shown in FIG. 2 and FIG. 4 , the swing member 122 of the swing assembly 12 may include a fan-shaped swing plate 1220 with a light transmission hole 1221 and a filter hole 1222 and a double-pass filter. Light sheet 1223, wherein the light-transmitting hole 1221 of the fan-shaped swing plate 1220 is directly used as the light-transmitting part 1201 of the swing assembly 12, and the double-pass filter 1223 is correspondingly arranged in the filter hole 1222 of the fan-shaped swing plate 1220 as a swing assembly 12 of the filter unit 1202 . It can be understood that, the fan-shaped swing plate 1220 is adapted to reserve enough space at a position away from the swing axis 120 to open the light-transmitting hole 1221 and the light-filtering hole 1222 .

In addition, the counterweight 123 of the swing assembly 12 can be, but not limited to, implemented as a fan-shaped counterweight 1230 , so as to achieve the required biasing effect while using a smaller volume of counterweight.

Preferably, as shown in FIG. 2 and FIG. 4 , the fan-shaped swing plate 1220 is integrally extended downwardly from the swing shaft 121 , and the fan-shaped counterweight 1230 is integrally extended upwardly from the swing shaft 121 , so that the swing assembly 12 Forming a structure with large ends and a small middle facilitates the construction of an overweight structure in a small space and reduces the volume of the swing filter 10 .

More preferably, as shown in FIG. 2 and FIG. 3 , the thickness of the sector-shaped counterweight 1230 is greater than the thickness of the sector-shaped swing plate 1220 , so as to obtain the desired weight bias effect under the same radial dimension, and avoid the influence of the sector-shaped counterweight 1230 The radial size of is too large and takes up too much space.

According to the above-mentioned embodiment of the present application, as shown in Fig. 3 and Fig. 4, the output shaft 131 of the drive motor 130 of the swing filter 10 is drivably connected to the swing shaft 121 of the swing assembly 12, so that when the drive motor 130 starts to work The output shaft 131 drives the swing shaft 121 to rotate forward or reversely, and then drives the swing member 122 to swing rightward or leftward correspondingly. After the drive motor 130 stops working, the output shaft 131 of the drive motor 130 can rotate freely, so that the swing assembly 12 can continue to swing under the action of its own gravity until it reaches the limit portion 1102 to be stopped.

It should be noted that, as shown in FIG. 4 , the limiting base 11 of the present application may be provided with, but not limited to, two limiting parts 1102 , and the two limiting parts 1102 are respectively located on the left and right sides of the swing axis 120 . In this way, when the swing assembly 12 is driven to rotate forward, the swing member 122 of the swing assembly 12 swings to the right to abut against the limit portion 1102 on the right side, so that the light transmission hole 1221 of the swing member 122 is aligned with the stop base 11 of the light window 1101; and when the swing assembly 12 is driven to rotate in reverse, the swing member 122 of the swing assembly 12 swings to the left to abut against the stopper 1102 on the left side, so that the filter hole 1222 of the swing member 122 is opposite to The light window 1101 of the quasi-limiting base 11.

It can be understood that, in another example of the present application, when the swing assembly 12 is driven to rotate in the forward direction, the swing member 122 of the swing assembly 12 swings to the right, and at the same time the counterweight 123 swings to the left to abut against the left The limit part 1102 on the side can still make the light transmission hole 1221 of the swing member 122 align with the light window 1101 of the limit base 11; and when the swing assembly 12 is driven to rotate in reverse, the swing member 122 of the swing assembly 12 Swinging to the left, at the same time, the weight member 123 swings to the right to abut against the limiting portion 1102 on the right side, so that the filter hole 1222 of the swinging member 122 can still be aligned with the light window 1101 of the limiting base 11 .

In other examples of the present application, the limiting base 11 of the present application may only be provided with one limiting portion 1102, and the limiting portion 1102 is arranged on the left or right side of the swing axis 120, so that when the swing assembly 12 is driven to rotate in the reverse direction, the swing member 122 swings to the left to abut against the limiting portion 1102, or the counterweight 123 swings to the right to abut to the limiting portion 1102; and when the swing assembly 12 is driven to rotate forward , the counterweight 123 swings to the left to abut against the limiting portion 1102 , or the swinging member 122 swings to the right to abut against the limiting portion 1102 . Alternatively, the swinging member 122 or the counterweight 123 may be provided with an arc-shaped limiting groove, and the limiting portion 1102 is correspondingly inserted in the arc-shaped limiting groove, which can still limit the rotation angle of the swinging member 122 to a certain level. Within the scope, ensure that the light transmission hole 1221 and the light filter hole 1222 of the swinging member 122 are respectively and stably aligned with the light window 1101 of the position limiting base 11 , which will not be repeated in this application.

Optionally, as shown in FIG. 2 and FIG. 3 , the swing member 122 may further include a fixed ring plate 1224, wherein the fixed ring plate 1224 is detachably installed on the fan-shaped swing plate 1220, and the double-pass filter 1223 is positioned on the fixed ring plate 1224. Between the plate 1224 and the fan-shaped swing plate 1220, the double-pass filter 1223 is detachably fixed to the filter hole 1222 of the fan-shaped swing plate 1220 through the fixing ring plate 1224. It can be understood that, in other examples of the present application, the double-pass filter 1223 can also be fixed in the filter hole 1222 of the fan-shaped swing plate 1220 by means such as bonding or fitting.

Preferably, one side of the fan-shaped swing plate 1220 is provided with an annular groove surrounding the filter hole 1222, and the depth of the annular groove is equal to the thickness of the double-pass filter 1223, so as to prevent the fixed ring plate 1224 from being damaged due to excessive extrusion force. Crush the double pass filter 1223.

It is worth noting that, since the image processing device needs to process the collected image information differently under different lighting conditions, the swing filter 10 can not only switch between different filtering states, but also need to determine whether the swing is in place, so as to Determine whether the switched filtering state is accurate. In order to achieve this purpose, as shown in Figures 1 and 2, the swing filter 10 of the present application can further include a sensor assembly 14, which is used to detect whether the swing assembly 12 is swinging in place, and determine whether the light window 1101 is aligned with The light-transmitting part 1201 is also the light-filtering part 1202 .

Specifically, as shown in FIGS. 2 and 3 , the sensor assembly 14 of the present application may include a positioning member 141 arranged on the swing assembly 12 and a first in-position sensor 142 and a second in-position sensor 142 respectively arranged on the limit base 11 correspondingly. Two in-position sensors 143, and when the positioning member 141 is aligned with the first in-position sensor 142 or the second in-position sensor 143 as the swing assembly 12 swings, the first in-position sensor 142 or the second in-position sensor 143 is triggered to send a corresponding positioning signal , and then determine whether the swing assembly 12 has swung in place according to whether there is a positioning signal, and determine whether the light-transmitting part 1201 or the light-filtering part 1202 is aligned with the light window 1101 according to the source of the positioning signal.

Exemplarily, as shown in FIG. 2 , the first in-position sensor 142 is located on the left side of the second in-position sensor 143 , and the positioning member 141 is fixed to the counterweight 123 of the swing assembly 12 . In this way, when the swing assembly 12 rotates forward so that the light-transmitting portion 1201 is aligned with the light window 1101, the positioning member 141 is aligned with the first in-position sensor 142, so as to trigger the first in-position sensor 142 to send a light-transmitting signal, so that the controller receives the light-transmitting signal. optical signal to determine that the swing filter 10 is in a non-filtering state; and when the swing assembly 12 rotates in reverse so that the filter part 1202 is aligned with the light window 1101, the positioning member 141 is aligned with the second in-position sensor 143 to trigger the second in-position The sensor 143 sends out a filter signal, so that the controller receives the filter signal to determine that the swing filter 10 is in a filter state. It can be understood that, in other examples of the present application, the positioning member 141 can also be arranged on the limit base 11, and the first in-position sensor 142 and the second in-position sensor 143 can also be correspondingly arranged on the swing assembly 12; Alternatively, the positioning member 141 can also be fixed on the swing member 122 of the swing assembly 12 , and the first in-position sensor 142 is located on the right side of the second in-position sensor 143 , which will not be repeated in this application.

Optionally, the first in-position sensor 142 and the second in-position sensor 143 can be implemented as Hall sensors, but not limited to; pole.

It is worth noting that, in order to facilitate the assembly of the swing filter 10 and to protect the normal swing of the swing component 12 from external environmental interference, as shown in Figures 1 and 2, the limit base 11 of the swing filter 10 of the present application can be It includes a base body 111 , a cover body 112 and a limit rod 113 , and the base body 111 is provided with a swing cavity 1111 , a driving cavity 1112 communicating with the swing cavity 1111 and a light through hole 1113 . The limiting rod 113 is correspondingly disposed on the base 111 to serve as the limiting portion 1102 of the limiting base 11 , and the light hole 1113 of the base 111 passes through the swing cavity 1111 to serve as the light window 1101 of the limiting base 11 . The driving mechanism 13 is fixedly installed in the driving cavity 1112 of the base body 111 , and the swing assembly 12 is swingably accommodated in the swing cavity 1111 of the base body 111 . The cover body 112 is detachably installed on the base body 111 to cover the swing assembly 12 in the swing cavity 1111 of the base body 111 .

Optionally, the first in-position sensor 142 and the second in-position sensor 143 of the sensor assembly 14 are correspondingly fixed on the cover body 112 of the limit base 11 , so as to be correspondingly fixed on the positioning member 141 of the counterweight 123 .

It is worth mentioning that, according to another aspect of the present application, as shown in FIGS. and a light source assembly 20 for emitting illumination light, wherein the light source assembly 20 is correspondingly arranged on the light-incoming side of the swing filter 10, and the swing filter 10 is located in the illumination light path of the light source assembly 20, so that the illumination from the light source assembly 20 The light passes through the swing filter 10 first, and then is transmitted to the measured object for illumination, so that the provided illumination conditions can be changed through the state switching of the swing filter 10 .

Exemplarily, when the swing filter 10 is in the non-filtering state, that is, when the light-transmitting part 1201 of the swing assembly 12 is aligned with the light window 1101 of the position-limiting base 11, the illumination light from the light source assembly 20 passes through the light window 1101 Light section 1201 to illuminate without filtering. As shown in FIG. 6 , when the swing filter 10 is in a filtering state, that is, when the filter portion 1202 of the swing assembly 12 is aligned with the light window 1101 of the limit base 11 , the illumination light from the light source assembly 20 passes through the light window 1101 pass through the filter unit 1202 to perform narrow-band light illumination after being filtered.

Optionally, as shown in FIGS. 6 and 7 , the light source assembly 20 may, but is not limited to, include a light emitting element 21 and a light shaping assembly 22, and the light shaping assembly 22 is correspondingly arranged between the light emitting element 21 and the swing filter 10, It is used for shaping the illuminating light emitted by the light emitting element 21, so that the shaped illuminating light propagates to the swing filter 10 for filtering.

Optionally, as shown in FIGS. 6 and 7 , the light shaping component 22 may, but is not limited to, include a light cone 221 and a lens 222, and the light cone 221 is arranged between the light emitting element 21 and the lens 222, so as to The illuminating light that 21 sends gathers.

Optionally, the light emitting element 21 of the present application may be implemented as, but not limited to, a white LED for emitting white illumination light. In this way, when the oscillating filter 10 is in the non-filtering state, the illumination device 1 for endoscope can provide white light illumination, which is convenient to obtain the surface image of the epidermis in the body cavity; The illuminating device 1 for the mirror can provide blue-green light illumination, which is convenient for obtaining blood vessel images of the epidermis in the body cavity.

Preferably, as shown in FIG. 6 and FIG. 7 , the light source assembly 20 further includes an infrared cutoff sheet 23, and the infrared cutoff sheet 23 is correspondingly arranged between the light shaping assembly 22 and the swing filter 10 to block the The infrared light in the illuminating light shaped by the component 22 avoids interference to the image acquisition of the image processing device.

Optionally, as shown in FIGS. 6 and 7 , the light source assembly 20 may further include a light source cover 24, wherein the light emitting element 21, the light shaping assembly 22 and the infrared cut-off sheet 23 are all arranged in the light source cover 24, and the light source cover 24 It is detachably mounted on the limit base 11 of the swing filter 10 to ensure that the illumination light path of the light source assembly 20 is aligned with the light window 1101 of the limit base 11 .

It is worth noting that since the illumination light provided by the illumination device 1 for endoscope usually needs to be transmitted to the body cavity through the optical fiber of the medical endoscope for illumination, as shown in Figs. The illuminating device 1 for the speculum can further include a fiber coupler 30, and the fiber coupler 30 is correspondingly arranged on the light exit side of the swing filter 10, for coupling the illumination light emitted from the swing filter 10 into the optical fiber for Long distance transmission.

Optionally, as shown in FIGS. 6 and 7 , the fiber coupler 30 of the present application may include a ball lens 31 and a fiber beam splitter 32 , and the ball lens 31 is located between the swing filter 10 and the fiber beam splitter 32 . In this way, the illumination light emitted from the oscillating filter 10 is firstly focused by the ball lens 31, and then split by the optical fiber beam splitter 32 so as to be transmitted along two or more optical fibers to meet the dual requirements of the medical endoscope. The need for lighting channels or multiple lighting channels.

Preferably, as shown in FIG. 6, the ball lens 31 of the fiber coupler 30 is fixed in the optical window 1101 of the limit base 11 of the swing filter 10; In the light hole 1113 of the base body 111 of the base 11, in order to increase the structural compactness of the endoscope illumination device 1 and reduce the volume.

Optionally, as shown in FIGS. 5 to 7 , the endoscope lighting device 1 of the present application may further include a heat sink 40 , and the heat sink 40 may be connected to the light source assembly 20 in a heat-conductive manner, and is used to heat the light source assembly 20 Heat dissipation.

Exemplarily, as shown in FIG. 5 and FIG. 6 , the heat sink 40 may include, but is not limited to, a heat sink set 41 and a heat conduction pipe 42 , wherein one end of the heat conduction pipe 42 is attached to the back of the light emitting element 21 of the light source assembly 20 , and the other end of the heat conduction pipe 42 is connected to the heat sink set 41, so that the heat generated by the light-emitting element 21 is conducted to the heat sink set 41 through the heat conduction pipe 42 to dissipate heat, which helps to improve heat dissipation efficiency.

It is worth mentioning that, according to another aspect of the present application, as shown in FIG. 8 , an embodiment of the present application further provides a medical endoscope, wherein the medical endoscope includes the above-mentioned endoscope illumination device 1 and the endoscope main body 2, and the endoscope illuminating device 1 is connected to the endoscope main body 2 through an optical fiber 3, and is used to provide illumination light for the endoscope main body 2 to illuminate the measured object, so that the endoscope main body 2 The image processing device can acquire the image information of the measured object, which is convenient for medical diagnosis or surgical treatment. It can be understood that the specific structure and working principle of the endoscope main body 2 of the present application can refer to the endoscope structure of the prior art, and the structure and working principle of the endoscope illuminating device 1 of the present application are in the above introduction The embodiments of the illuminating device and the oscillating filter for the speculum have already been introduced, and will not be repeated here.

Optionally, as shown in FIG. 8 , the illumination device 1 for endoscope of the present application may further include a housing 50, and the swing filter 10, the light source assembly 20, the fiber coupler 30 and the heat sink 40 are all housed in the Inside the casing 50, in order to prevent the operation of the illumination device 1 for endoscope from being disturbed by the external environment. It can be understood that other devices may also be arranged in the housing 50 of the illumination device 1 for endoscope of the present application as an image processor of the medical endoscope, which will not be described in detail in the present application.

The various technical features of the above embodiments can be combined without changing the basic principles of the present invention. For the sake of concise description, all possible combinations of the various technical features in the above embodiments are not described. However, as long as these There is no contradiction in the combination of technical features, and all should be considered as within the scope of the description.

The above examples only express several implementation modes of the present application, and the description thereof is relatively specific and detailed, but should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of this application should be based on the appended claims.

Claims

A swing filter, characterized in that it comprises:

A limiting base, wherein the limiting base is provided with a light window and a limiting part;

A swing assembly, wherein the swing assembly is swingably arranged on the limit base, and the center of gravity of the swing assembly deviates from the swing axis of the swing assembly, wherein the swing assembly is provided around the swing axis The light-transmitting part and the light-filtering part arranged; and

A driving mechanism, wherein the driving mechanism is drivably connected to the swing assembly, and is used to bidirectionally drive the swing assembly to swing relative to the limit base, wherein when the drive mechanism drives the swing assembly to When rotating in the opposite direction, the swing assembly will positively abut against the limiting portion of the limiting base under the action of its own gravity, so that the light-transmitting portion remains aligned with the limiting portion of the limiting base. In the light window, when the drive mechanism drives the swing assembly to rotate in reverse, the swing assembly will reversely abut against the limiting part under the action of its own gravity, so that the filter part can be held aligned with the light window.
The swing filter according to claim 1, wherein the center of gravity of the swing assembly is located above the horizontal plane where the swing axis is located.
The swing filter according to claim 1 or 2, wherein the swing assembly comprises a swing shaft defining the swing axis, a swing member extending radially downward from the swing shaft, and a swing member extending radially from the swing shaft A counterweight extending radially upwards, wherein the mass of the counterweight is greater than that of the swinging piece, and the light-transmitting portion and the filter portion are correspondingly arranged on the swinging piece.
The oscillating filter according to claim 3, wherein in the oscillating assembly, the light-transmitting part and the filter part are arranged axisymmetrically on the oscillating member, and the center of the light-transmitting part The radial distances between the center of the filter part and the center of the light window and the swing axis are all the same.
The oscillating filter according to claim 4, wherein the light window of the limiting base is located directly below the oscillating axis, and the light window between the light-transmitting part and the light-filtering part The reference plane where the axis of symmetry is located passes through the center of gravity of the swing assembly and the swing axis.
The oscillating filter according to claim 3, wherein the center of gravity of the oscillating assembly is located laterally in front or laterally behind the oscillating shaft.
The oscillating filter according to claim 3, wherein the oscillating member comprises a fan-shaped oscillating plate and a double-pass filter provided with a light transmission hole and a filter hole, wherein the transmission of the fan-shaped oscillating plate The light hole serves as the light-transmitting part of the swing assembly, and the double-pass filter is correspondingly arranged in the filter hole of the fan-shaped swing plate to serve as the light filter of the swing assembly. department.
The swing filter according to claim 7, wherein the counterweight is a sector-shaped counterweight, wherein the sector-shaped counterweight extends integrally from the swing shaft upwardly and gradually expands, and the sector-shaped counterweight The swing plate integrally extends downwardly from the swing shaft.
The swing filter according to claim 8, characterized in that, the thickness of the sector-shaped counterweight is greater than the thickness of the sector-shaped swing plate.
The swing filter according to claim 3, wherein the drive mechanism is a drive motor fixed on the limit base, and the output shaft of the drive motor is drivably connected to the swing filter. The swing shaft of the assembly, wherein the limit base includes a base body, a cover body, and a limit rod, and the base body is provided with a swing cavity, a drive cavity communicated with the swing cavity, and a light hole, wherein the The limit rod is correspondingly arranged on the base as the limit portion of the limit base, and the light hole of the base passes through the swing cavity as the limit portion of the limit base. The light window, wherein the driving mechanism is fixedly installed in the driving cavity of the base body, and the swing assembly is swingably accommodated in the swing cavity of the base body, wherein the cover is It is detachably mounted on the base body to cover the swing cavity of the base body.
The swing filter according to claim 1 or 2, characterized in that, the swing filter further comprises a sensor assembly, wherein the sensor assembly includes a positioning member arranged on the swing assembly and correspondingly arranged on The first in-position sensor and the second in-position sensor of the limit base, and when the positioning member is aligned with the first in-position sensor or the second in-position sensor when the swing assembly swings, the first in-position sensor The first position sensor or the second position sensor is triggered to send a corresponding positioning signal.
The lighting device for endoscope is characterized in that it includes:

A wobble filter as claimed in any one of claims 1 to 11; and

A light source assembly for emitting illumination light, wherein the light source assembly is correspondingly arranged on the light-incoming side of the swing filter, and the swing filter is located in the illumination light path of the light source assembly.
The illumination device for endoscope according to claim 12, wherein the light source assembly comprises a light emitting element and a light shaping assembly correspondingly arranged between the light emitting element and the swing filter, wherein the The light shaping component includes a light cone and a lens, and the light cone is arranged between the light emitting element and the lens.
The illuminating device for endoscope according to claim 13, characterized in that, the illuminating device for endoscope further comprises a heat sink connected to the light source assembly in a thermally conductive manner, wherein the heat sink includes a heat sink set and a heat conduction pipe, and one end of the heat conduction pipe is attached to the back of the light emitting element of the light source assembly, and the other end is connected to the heat sink group.
The illumination device for endoscope according to claim 12, characterized in that, the illumination device for endoscope further comprises a fiber coupler correspondingly arranged on the light output side of the swing filter, wherein the optical fiber The coupler includes a ball lens and a fiber splitter, and the ball lens is located between the swing filter and the fiber splitter.
The medical endoscope is characterized in that it includes:

endoscope body; and

The lighting device for endoscope according to any one of claims 12 to 15, wherein the lighting device for endoscope is connected to the main body of the endoscope through an optical fiber, and is used to provide illumination for the main body of the endoscope Light.