CN221013218U - Lighting device and hard tube endoscope system - Google Patents

Abstract

The utility model relates to the technical field of endoscopes, and discloses an illumination device and a hard tube endoscope system, wherein the illumination device comprises: the light guide layer is provided with an input end and an output end, and the input end is suitable for being connected with a light guide beam; the light splitting component is connected with the output end at one end; a heat conduction member, one side surface of which is connected to the inner surface of the spectroscopic member; the imaging lens body is connected with one side surface of the heat conduction component, which is far away from the light splitting component; the light splitting component is used for changing a part of light propagation paths output by the light guide layer and heating the heat conducting component. According to the utility model, the light-splitting component is used for changing the propagation path of a part of light output by the light guide layer, heating the heat-conducting component, and heating the imaging lens body after the heat-conducting component is heated, so that the temperature difference between the imaging lens body and the patient cavity is reduced, and the problem that the imaging lens body is easy to fog is solved.

Description

Lighting device and hard tube endoscope system

Technical Field

The utility model relates to the technical field of endoscopes, in particular to a lighting device and a hard tube endoscope system.

Background

The hard tube endoscope is used for diagnosing and/or treating natural cavity and focus via puncturing cavity and is mainly composed of illuminator and imaging device.

When the hard tube endoscope is used, the front end part of the lighting device is required to be inserted into the cavity of a patient, and as the temperature in the cavity of the patient is higher than that of the endoscope, the imaging lens body positioned at the front end of the lighting device easily forms a fog layer, so that the definition of the surgical field of a doctor is influenced, and the accident risk is increased.

Disclosure of utility model

In view of the above, the present utility model provides an illumination device and a hard tube endoscope system to solve the problem that an imaging lens body is easy to form a fog layer and increase accident risk.

In a first aspect, the present utility model provides a lighting device comprising:

The light guide layer is provided with an input end and an output end, and the input end is suitable for being connected with a light guide beam;

The light splitting component is connected with the output end at one end;

A heat conduction member, one side surface of which is connected to the inner surface of the spectroscopic member;

The imaging lens body is connected with one side surface of the heat conduction component, which is far away from the light splitting component;

The light splitting component is used for changing a part of light propagation paths output by the light guide layer and heating the heat conducting component.

The beneficial effects are that: according to the utility model, the light-splitting component is used for changing the propagation path of a part of light output by the light guide layer, heating the heat-conducting component, and heating the imaging lens body after the heat-conducting component is heated, so that the temperature difference between the imaging lens body and the patient cavity is reduced, and the problem that the imaging lens body is easy to fog is solved.

In an alternative embodiment, the beam splitting component comprises a plurality of sets of lenses having inclined surfaces, the plurality of sets of lenses being interconnected by the inclined surfaces, and the connection interface of the inclined surfaces being coated with a beam splitting film.

The beneficial effects are that: according to the utility model, the lens with the inclined surface is matched with the light splitting film, so that part of light input by the light guide layer can be refracted to the heat conduction component, and the imaging lens body is heated through the heat conduction component, so that the imaging lens body is effectively prevented from fogging. Another portion of the light rays does not change the propagation path and provides illumination through the lens.

In an alternative embodiment, the light splitting component comprises a first lens and a second lens, and a first inclined plane is arranged at one end of the first lens; one end of the second lens is provided with a second inclined plane which is matched with the first lens, the first inclined plane is attached to the second inclined plane, and a light splitting film is plated on an attaching interface of the first inclined plane and the second inclined plane.

The beneficial effects are that: according to the utility model, the imaging lens body can be heated only by adopting the first lens with the inclined plane and the second lens to be matched with the light splitting film, so that the anti-fog effect is finally realized, the structure is simple, and the popularization is facilitated.

In an alternative embodiment, the light splitting film is a dichroic film, and the dichroic film is capable of deflecting at least part of the red light with a wavelength of 720nm or more in the white light input from the light guiding layer toward the heat conducting component.

The beneficial effects are that: according to the dichroic film disclosed by the utility model, at least part of red light with the wavelength larger than or equal to 720nm in white light input by the light guide layer is deflected to the heat conduction component, so that the heat conduction component is heated, the heat conduction component is used for transmitting heat to the imaging lens body, the heating of the imaging lens body is realized, and the temperature difference between the imaging lens body and a patient cavity is reduced, so that the fogging phenomenon is prevented, and the accident risk of an operation is reduced.

In an alternative embodiment, the lighting device further comprises an inner tube and an outer tube, the outer tube being sleeved with the inner tube, the light guiding layer being mounted between the inner tube and the outer tube.

The beneficial effects are that: the utility model installs the light guide layer between the inner tube and the outer tube, which can protect the light guide layer.

In an alternative embodiment, the lighting device further comprises a collar, the collar surrounding the light splitting component, and the outer tube is fixedly connected with the collar.

The beneficial effects are that: the sleeve ring wraps the light splitting component, and can protect the light splitting component, and the heat conducting component and the imaging lens body inside the light splitting component.

In an alternative embodiment, a thermally conductive member is mounted at the end of the inner tube and a spectroscopic member is mounted between the collar and the thermally conductive member.

The beneficial effects are that: according to the utility model, the light-splitting component is fixed between the heat-conducting component and the lantern ring, the heat-conducting component is in direct contact with the light-splitting component, the heating distance is short, and the light-splitting component is convenient to refract part of light input by the light-conducting layer to the heat-conducting component, so that the heating operation is realized.

In an alternative embodiment, the outer tube and collar are made of the same material.

The beneficial effects are that: the outer tube and the lantern ring are made of the same material, so that the utility model is convenient to install and use.

In an alternative embodiment, the outer tube is sealingly connected to the collar.

The beneficial effects are that: the outer tube is connected with the lantern ring in a sealing way, so that external foreign matters can be prevented from entering the endoscope system from the joint of the outer tube and the lantern ring.

In a second aspect, the present utility model also provides a hard tube endoscope system comprising: the light guide beam, the imaging device, the base and the lighting device are connected with each other; the imaging device is arranged at one end of the illumination device through the base.

The beneficial effects are that: because a hard tube endoscope system includes the illumination device, it has the same effect as the illumination device, and a detailed description thereof will be omitted.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of a rigid tube endoscope system according to an embodiment of the present utility model;

FIG. 2 is an exploded view of the hard tube endoscope system shown in FIG. 1;

FIG. 3 is a cross-sectional view of the rigid tube endoscope system shown in FIG. 1;

FIG. 4 is an enlarged partial schematic view of FIG. 3A;

fig. 5 is a schematic diagram of a spectroscopic path of a spectroscopic unit according to an embodiment of the present utility model.

Reference numerals illustrate:

1. A light guide layer; 2. a light-splitting member; 201. a first lens; 202. a second lens; 203. a light-splitting film; 3. a heat conductive member; 4. an imaging mirror body; 5. an inner tube; 6. an outer tube; 7. a collar; 100. a lighting device; 200. a light guide beam; 300. an imaging device; 310. an optical component; 320. a drying assembly; 330. an eyepiece assembly; 400. a base.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

When the hard tube endoscope is used, the imaging lens body at the front end of the lighting device is required to be inserted into the cavity of a patient. The image inverting system converts the inverted image into the positive image, and transmits the positive image to the ocular lens, and the ocular lens amplifies the positive image for observation by human eyes.

Because the temperature in the patient cavity is higher than the temperature of the endoscope, and the humidity in the patient cavity is higher than the external environment. Therefore, when the hot air in the cavity of the patient encounters the cold imaging lens body, the air can condense into a fog layer on the surface of the imaging lens body, the appearance of the fog layer can greatly influence the definition of the surgical field of a doctor, and the risk of safety accidents is increased.

Aiming at the problem that the surface can condense fog layer when the imaging lens body is used, and the safety accident risk is high, the embodiment of the utility model proposes to use a part of the light source received by the lighting device for heating the heat conduction component, and then heat the imaging lens body by the heat conduction component, so that the temperature difference between the imaging lens body and the cavity of a patient is reduced, the imaging lens body can be effectively prevented from fogging, and the safety accident risk is reduced.

Embodiments of the present utility model are described below with reference to fig. 1 to 5.

According to an embodiment of the present utility model, in one aspect, there is provided a lighting device, mainly including: a light guiding layer 1, a light splitting component 2, a heat conducting component 3 and an imaging lens body 4. The light guiding layer 1 is provided with an input end and an output end. The input end is adapted to be connected to a light guide beam 200. One end of the spectroscopic unit 2 is connected to the output end. One side surface of the heat conducting member 3 is connected to the inner surface of the spectroscopic member 2, and the imaging lens body 4 is connected to one side surface of the heat conducting member 3 facing away from the spectroscopic member 2. The light-splitting member 2 is configured to change a part of the light propagation path outputted from the light-guiding layer 1 and heat the heat-conducting member 3.

According to the embodiment, the light splitting component 2 and the heat conducting component 3 improve the temperature of the imaging lens body 4 when entering the cavity of a patient, reduce the temperature difference between the imaging lens body 4 and the cavity of the patient, solve the problem that the imaging lens body 4 is easy to fog, and have low accident risk. Meanwhile, the heat of part of the light is distributed to the imaging lens body 4, so that the overall temperature rising speed of the lighting device 100 is reduced, and the risk of burning a patient caused by overheating of the lighting device 100 after long-time use is reduced. The light beam part without changing the propagation path passes through the light splitting component 2 for illumination, and compared with the traditional method for controlling the total luminous flux to adjust the thermal effect of the light beam, the embodiment has better illumination effect while playing the anti-fog effect.

Specifically, the light guide layer 1 receives the light source from the light guide beam 200 and transmits it to the spectroscopic unit 2. The light-splitting component 2 is preferably a light-splitting gluing mirror, and can refract part of light of the light source to the heat-conducting component 3, the heat-conducting component 3 is heated, and then heat is transferred to the imaging mirror body 4, so that the temperature of the imaging mirror body 4 is increased. The other part of the light propagation path of the light source remains unchanged, passing through the beam splitting part 2 for providing illumination.

The front end of the imaging lens body 4 can be also provided with an objective window. The front end here refers to the end that is close to the patient's cavity. The objective window is used to protect the imaging lens body 4, for example, a sapphire window is used. The heat conductive member 3 is preferably annular. The imaging lens body 4 is matched with the heat conduction component 3 to form a round lens, and is fixedly arranged on the inner surface of the heat conduction component 3. The objective window is a round window, is fixedly arranged on the inner surface of the heat conduction component 3, and is positioned at the front end of the imaging lens body 4. The heat conduction member 3 heats the objective lens window at the same time, preventing the objective lens window from fogging. The form of fixed mounting can be selected from interference connection, clamping connection and the like. In some embodiments, the imaging lens body 4 may be an integrated part of an objective lens body for imaging a patient cavity and an objective lens window for protecting the objective lens body, and the heat conducting member 3 heats the imaging lens body 4 to prevent the imaging lens body 4 from fogging.

In one embodiment, the optical splitting component 2 comprises a plurality of sets of lenses having a bevel. The groups of lenses are connected with each other through inclined planes, and the connection interface of the inclined planes is plated with a beam splitting film 203. The spectroscopic film 203 is composed of a plurality of thin films, and the thickness and refractive index of each thin film can be precisely calculated and controlled. By controlling the thickness of the thin film layer and the variation of the refractive index, light can be interfered and reflected on the light splitting film 203, thereby realizing partial refraction of light. The light splitting film 203 refracts part of the light input by the light guiding layer 1 to the heat conducting component 3, heats the imaging lens body 4 through the heat conducting component 3, reduces the temperature difference between the imaging lens body 4 and the patient cavity, and effectively prevents the imaging lens body 4 from fogging. In addition, even if the imaging lens body 4 is fogged when just used, the imaging lens body 4 can be heated by the light refracted by the light splitting component 2 through the heat conducting component 3, so that the defogging effect is achieved, and the influence of a foggy layer is reduced.

The present embodiment is exemplified by the case where the spectroscopic unit 2 includes two sets of lenses having inclined surfaces.

Specifically, the spectroscopic unit 2 includes a first lens 201 and a second lens 202. One end of the first lens 201 is provided with a smooth first inclined surface. One end of the second lens 202 is provided with a smooth second bevel adapted to the first lens 201. The first lens 201 and the second lens 202 are preferably annular lenses of the same material. The first inclined plane is attached to the second inclined plane, and the attaching interface of the first inclined plane and the second inclined plane is plated with a light splitting film 203. The fit may be by a transparent glue bond or by clamping the first lens 201 and the second lens 202. The imaging lens body 4 can be heated only by adopting the first lens 201 and the second lens 202 with inclined planes to be matched with the light splitting film 203, so that the anti-fog effect is finally realized, the structure is simple, and the popularization is facilitated.

In some embodiments, the light splitting component 2 may further be provided with three or more groups of lenses with inclined planes according to needs, the lenses are mutually attached to each other through the inclined planes, so as to achieve a light splitting effect, and part of light of the light source is refracted to the light splitting component 2.

In one embodiment, the first inclined plane forms an included angle of 30 degrees with respect to the plane of the light guiding layer 1, as shown in fig. 5, and the angle R is shown. The included angle of the second inclined plane relative to the plane of the light guide layer 1 is matched with the first inclined plane, and the angle is 150 degrees. Of course, the angle R may be set to other values as desired. One side of the second lens 202, which is away from the second inclined plane, is connected with the output end of the light guide layer 1, and receives the light input by the light guide layer 1. The light splitting film 203 deflects a part of the high-energy light wave from the light guiding layer 1 toward the heat conducting member 3 in the direction indicated by the arrow C shown in fig. 5. The heat conduction component 3 is heated under the radiation of high-energy light waves, and then heat is transferred to the imaging lens body 4, so that the temperature of the imaging lens body 4 is increased, and the influence on the observation result due to excessive temperature difference after the imaging lens body 4 enters a patient cavity is avoided. The propagation direction of other light waves is unchanged, the light waves pass through the first lens 201 and continue to propagate, the propagation direction is shown by an arrow B shown in fig. 5, the light wave energy of the path is reduced, the radiation heat of the front end of the lighting device 100 is reduced, and the problem that a patient is burnt due to the fact that the front end of the lighting device 100 is too high in temperature after long-time use can be effectively avoided.

In one embodiment, the light splitting film 203 is a dichroic film. And electroplating a bidirectional film between the first inclined surface and the second inclined surface. The bidirectional film can change the propagation paths of different colors in white light to realize a light splitting effect. The light transmission path of the light input by the light guide layer 1 is changed through the bidirectional film, so that the light splitting effect is realized, the structure is simple, and the popularization is facilitated.

The light guide beam 200 can input white light with a wavelength of 390nm to 780 nm. The bidirectional film can deflect the red light with the wavelength of at least 720nm or more in the white light input by the light guide layer 1 to the heat conduction component 3, so that the heat conduction component 3 is heated, the heat conduction component 3 transfers the heat to the imaging lens body 4, the heating of the imaging lens body 4 is realized, and the temperature difference between the imaging lens body 4 and a patient cavity is reduced, so that the fogging phenomenon is prevented, and the accident risk of an operation is reduced. The light-splitting film 203 deflects the red light having a relatively high temperature toward the heat-conducting member 3, and the heating speed is high. By adjusting the thickness and refractive index of the thin film formed by the light-splitting film 203, it is achieved that part of the red light having a wavelength of 720nm or more in the white light inputted from the light-guiding layer 1 is deflected toward the heat-conducting member 3.

In one embodiment, the lighting device 100 further comprises an inner tube 5 and an outer tube 6. The inner tube 5 is used for installing an imaging optical path. The imaging light path is composed of a plurality of groups of lenses and is used for transmitting the image of the observed object at the imaging lens body 4. The outer tube 6 is sleeved with the inner tube 5, and a gap is reserved between the inner tube 5 and the outer tube 6. The light guiding layer 1 is mounted in a sealing manner at the gap between the inner tube 5 and the outer tube 6. The gap between the inner tube 5 and the outer tube 6 forms a sealed cavity for protecting the light guiding layer 1 and the imaging light path from abrasion or interference by the external environment.

In one embodiment, the lighting device 100 further comprises a collar 7. The collar 7 encloses the spectroscopic assembly 2. The outer tube 6 is fixedly connected with the collar 7. The collar 7 is wrapped around the spectroscopic member 2, and can protect the spectroscopic member 2, and the heat conductive member 3 and the imaging lens body 4 inside the spectroscopic member 2.

In one embodiment, the heat conducting member 3 is an annular head end seat. The heat conductive member 3 is fixedly mounted to the end of the inner tube 5. The imaging lens body 4 is positioned on the inner surface of the head end seat far away from the inner tube 5. The spectroscopic unit 2 is fixedly mounted between the collar 7 and the heat conducting unit 3. The manner of fixing is preferably by gluing. The light splitting component 2 is fixed between the heat conducting component 3 and the lantern ring 7, the heat conducting component 3 is in direct contact with the light splitting component 2, the heating distance is short, and the light splitting component 2 can directly refract the light input by the light guiding layer 1 to the heat conducting component 3 conveniently, so that the heating operation is realized.

In one embodiment, the outer tube 6 and collar 7 are made of the same material for ease of installation and use. For example, both made of cobalt nickel alloy and stainless steel alloy.

In one embodiment, the outer tube 6 is sealingly connected to the collar 7 by means of welding, glue bonding, or the like. The outer tube 6 is in sealing connection with the lantern ring 7, and external foreign matters can be prevented from entering the endoscope system from the joint of the outer tube 6 and the lantern ring 7.

In one embodiment, the light guiding layer 1 is made of a plurality of light guiding fiber strands. The light guide layer 1 transmits the light source of the light guide beam 200 through a plurality of light guide fiber wires, and after the propagation path of the light source is changed by the light splitting component 2, the lighting and heating functions are respectively realized.

The lighting device in this embodiment may also comprise other necessary modules or components, such as wires, circuits, etc., in order to achieve the basic function of the lighting device. It should be noted that any suitable existing configuration may be used for other necessary modules or components included in the lighting device. For clarity and brevity, the technical solutions provided by the present embodiments will not be repeated here, and the drawings in the description are correspondingly simplified. It will be understood that the utility model is not limited in scope thereby.

According to an embodiment of the present utility model, in another aspect, there is also provided a hard tube endoscope system including: light guide beam 200, imaging device 300, base 400, and illumination device 100 described above. The light guide beam 200 has one end connected to the light source and the other end connected to the lighting device 100, and is configured to input light of the light source into the light guide layer 1 of the lighting device 100. The imaging device 300 is mounted to one end of the illumination device 100 through a base 400.

It should be noted that, for brevity, only the joint portion of the light guide beam 200 is shown in fig. 1 to 3, and it should be understood that the protection scope of the present embodiment is not limited thereto.

Specifically, the base 400 is provided with a plurality of connection ports, which are respectively connected to the light guide beam 200, the imaging device 300, and the illumination device 100. One end of the light guide beam 200 is connected with an external light source, and the external light source can adopt conventional external light sources such as an LED cold light source, a xenon lamp light source and the like. The other end of the light guide beam 200 is connected to the light guide layer 1 of the lighting device 100 through a connection port of the base 400. The light guide beam 200 can input light of an external light source to the light guide layer 1.

Imaging device 300 includes an optical assembly 310, a drying assembly 320, and an eyepiece assembly 330. The optical assembly 310 is connected to the lighting device 100 through a connection port of the base 400, and is used for receiving an image to be observed of a patient cavity transmitted by the lighting device 100. The optical assembly 310 is coupled to the eyepiece assembly 330 through the drying assembly 320. The optical assembly 310 receives the image of the illumination device 100, and is magnified by the eyepiece assembly 330 for visual observation. The drying assembly 320 is used to dry the eyepiece assembly 330. The imaging device 300 receives the signal from the illumination device 100 to provide an image for viewing the interior of the patient cavity. Because a hard tube endoscope system includes the illumination device 100, it has the same effect as the illumination device 100, and a detailed description thereof will be omitted.

Although embodiments of the present utility model have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the utility model, and such modifications and variations fall within the scope of the utility model as defined by the appended claims.

Claims (10)

1. A lighting device, comprising:

the light guide layer (1), the light guide layer (1) is provided with an input end and an output end, and the input end is suitable for being connected with a light guide beam (200);

a light splitting component (2), wherein one end of the light splitting component (2) is connected with the output end;

A heat conduction member (3), wherein one side surface of the heat conduction member (3) is connected to the inner surface of the spectroscopic member (2);

an imaging lens body (4), wherein the imaging lens body (4) is connected with one side surface of the heat conduction component (3) away from the light splitting component (2);

the light splitting component (2) is used for changing the transmission path of part of light rays output by the light guide layer (1) and heating the heat conducting component (3).

2. A lighting device as claimed in claim 1, characterized in that the light-splitting component (2) comprises a plurality of sets of lenses having inclined surfaces, by means of which the sets of lenses are interconnected, and the connection interface of the inclined surfaces is coated with a light-splitting film (203).

3. The lighting device according to claim 2, characterized in that the light splitting component (2) comprises a first lens (201) and a second lens (202), a first inclined plane is arranged at one end of the first lens (201), a second inclined plane adapted to the first lens (201) is arranged at one end of the second lens (202), the first inclined plane and the second inclined plane are attached, and an attaching interface of the first inclined plane and the second inclined plane is plated with the light splitting film (203).

4. A lighting device as claimed in claim 2 or 3, characterized in that the light-splitting film (203) is a dichroic film capable of deflecting at least part of the red light of 720nm or more wavelength in the white light inputted from the light-guiding layer (1) toward the heat-conducting member (3).

5. A lighting device as claimed in claim 1, characterized in that the lighting device further comprises an inner tube (5) and an outer tube (6), the outer tube (6) being sleeved with the inner tube (5), the light guiding layer (1) being mounted between the inner tube (5) and the outer tube (6).

6. A lighting device as claimed in claim 5, characterized in that the lighting device further comprises a collar (7), the collar (7) surrounding the light-splitting member (2), the outer tube (6) being fixedly connected with the collar (7).

7. A lighting device as claimed in claim 6, characterized in that the heat conducting member (3) is mounted at the end of the inner tube (5), the light splitting member (2) being mounted between the collar (7) and the heat conducting member (3).

8. A lighting device as claimed in claim 6, characterized in that the outer tube (6) and the collar (7) are made of the same material.

9. A lighting device as claimed in claim 6, characterized in that the outer tube (6) is in sealing connection with the collar (7).

10. A rigid tube endoscope system, comprising: a light guide beam (200), an imaging device (300), a base (400) and the lighting device (100) of any one of claims 1 to 9, the light guide beam (200) being connected to the lighting device (100); the imaging device (300) is mounted at one end of the illumination device (100) through the base (400).