Endoscope with heating defogging function

Abstract

The application discloses an endoscope with a heating defogging function, which comprises an endoscope eyepiece mechanism and an endoscope mirror body, the front end of the endoscope mirror body is provided with an illumination mechanism, an imaging mechanism and a light-heat conversion mechanism, the rear end of the endoscope mirror body is provided with a light source interface mechanism connected with the illumination mechanism, the inside of the endoscope mirror body is also provided with the light-heat conversion mechanism, the light-heat conversion mechanism comprises a first light-heat conversion layer and a second light-heat conversion layer arranged in the inside of the endoscope mirror body, a light guide layer is arranged between the light-heat conversion mechanism, the imaging mechanism and the mirror body, and the first light-heat conversion layer and the second light-heat conversion layer are made of a light-heat conversion material. The endoscope can not only maintain a good illumination effect of the endoscope, but also effectively avoid the influence of water mist formed due to the use of an ultrasonic knife and other factors on the endoscope during a surgical operation, greatly facilitates the use of the operator, simultaneously improves the observation effect of the endoscope and reduces the risk of the surgical operation using the endoscope.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of endoscopes, in particular to an endoscope with a heating demisting function. BACKGROUND

[0002] An endoscope needs a light source to provide illumination when in use. Common medical illumination light sources include halogen lamps and xenon lamps. The spectrum of these light sources contains a wide range of high-energy infrared bands, which have a thermal effect and generate a large amount of heat in actual application, which can easily burn and damage mucous membranes and other tissues, causing medical accidents.

[0003] The invention and application of cold light sources greatly avoid the occurrence of tissue burns and surgical combustion accidents caused by overheating of the front end of the endoscope, increasing the safety of endoscopic surgery. However, the application of cold light sources also results in a lower temperature at the front end of the endoscope. During endoscopic operation, water vapor easily condenses on the end face of the front end of the endoscope, causing lens blur, which is particularly evident when operating in a narrow space. In addition, the use of ultrasonic knives in narrow spaces can generate a large amount of high-temperature water vapor in an instant, which quickly condenses on the end face of the front end of the endoscope, requiring the operator to repeatedly wipe the end face, which seriously interferes with the smoothness of the operation. Therefore, a demisting device that temporarily increases the temperature of the end face or the lens body during surgery has great clinical practicality. Although the use of in-surgery lens heating devices or hot water heating methods has certain effects, they still cannot significantly reduce the frequency of lens wiping operations.

[0004] Therefore, there is a need to design an endoscope with a heating demisting function, which can absorb part of the radiant energy of the light source to generate heat. This way, when operating in a narrow space, the lens body and end face of the endoscope can always maintain a high temperature, reducing the chances of lens fogging, making the operation more smooth. SUMMARY

[0005] The purpose of the present application is to solve the above problems by designing an endoscope with a heating demisting function.

[0006] To achieve the above purpose, the technical solution of the present application is an endoscope with a heating demisting function, which includes an endoscope eyepiece mechanism and an endoscope lens body. The front end of the endoscope lens body is provided with an illumination mechanism, an imaging mechanism, and a light-heat conversion mechanism. The rear end of the endoscope lens body is provided with a light source interface mechanism connected to the illumination mechanism. The inside of the endoscope lens body is also provided with a light-heat conversion mechanism.

[0007] As a further description of the present application, the light-heat conversion mechanism comprises a first light-heat conversion layer and a second light-heat conversion layer arranged inside and at the front end of the endoscope body, a light guide layer is arranged between the first light-heat conversion layer and the second light-heat conversion layer, and the center part of the endoscope body is provided with an imaging light path composed of a plurality of columnar lenses arranged in a certain rule.

[0008] As a further description of the present application, the first light-heat conversion layer and the second light-heat conversion layer are made of light-heat conversion material, and the first light-heat conversion layer and the second light-heat conversion layer are in close contact with the inner wall of the endoscope body.

[0009] As a further description of the present application, the light guide layer is a light guide fiber bundle made of a plurality of light guide fiber filaments, and the light guide layer is composed of two parts, one part of the light guide layer is aligned with the front end face of the first light-heat conversion layer and the second light-heat conversion layer, and the other part of the light guide layer is aligned with the rear end face of the first light-heat conversion layer and the second light-heat conversion layer.

[0010] As a further description of the present application, the cross-sectional shape of the first light-heat conversion layer is crescent-shaped, and the cross-sectional shape of the second light-heat conversion layer is Ω-shaped.

[0011] As a further description of the present application, the imaging mechanism comprises an objective lens arranged at one end inside the endoscope body, and an objective lens is arranged outside the objective lens.

[0012] As a further description of the present application, the light source interface mechanism comprises an interface fixing body, a light source interface pipeline is arranged on the interface fixing body at a certain angle, a light source optical fiber is arranged in the light source interface pipeline, and the light source optical fiber is connected with an external light source.

[0013] As a further description of the present application, the endoscope eyepiece mechanism comprises a connecting body connected with the light source interface mechanism, and an eyepiece cover is integrally formed at one end of the connecting body away from the light source interface mechanism.

[0014] The beneficial effect is that the endoscope with the heating demisting function is designed, which comprises an endoscope eyepiece mechanism and an endoscope mirror body. The front end of the endoscope mirror body is provided with an illumination mechanism, an imaging mechanism and a light-heat conversion mechanism. The rear end of the endoscope mirror body is provided with a light source interface mechanism connected with the illumination mechanism. The light-heat conversion mechanism comprises a first light-heat conversion layer and a second light-heat conversion layer. The light-heat conversion mechanism is provided with a light guide layer between the imaging mechanism and the mirror body. The first light-heat conversion layer and the second light-heat conversion layer are made of light-heat conversion materials and are in close contact with the inner wall of the endoscope mirror body. The light guide layer is composed of two parts. One part of the light guide layer is aligned with the front end face of the first light-heat conversion layer and the second light-heat conversion layer. The other part of the light guide layer is aligned with the rear end face of the first light-heat conversion layer and the second light-heat conversion layer. In use, the external light source equipment transmits light into the light guide layer of the endoscope through the light source interface mechanism. The light in the light guide layer is transmitted to the front end of the endoscope through total reflection. Then, part of the wave band in the light spectrum emitted by the light guide layer aligned with the rear end face of the first light-heat conversion layer and the second light-heat conversion layer is absorbed and converted by the first light-heat conversion layer and the second light-heat conversion layer to generate heat. The first light-heat conversion layer and the second light-heat conversion layer are in contact with the inner wall of the endoscope mirror body, so the heat is transmitted to the endoscope mirror body through the contact surface, so that the endoscope mirror body and the front end of the endoscope can maintain a high temperature. The other part of the light can transmit through the light-heat conversion layer for illumination. The light emitted by the light guide layer aligned with the front end face of the first light-heat conversion layer and the second light-heat conversion layer is directly used for illumination. This structure can not only maintain the good illumination effect of the endoscope, but also effectively avoid the influence of the water mist formed by the use of ultrasonic knife and other factors on the endoscope during the operation process, greatly facilitate the use of the operator, and improve the observation effect of the endoscope and reduce the risk of using the endoscope for operation. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the overall structure of the present application;

[0016] Figure 2 is one of the structure schematic diagrams of the light-heat conversion mechanism of the present application;

[0017] Figure 3 is one of the structure schematic diagrams of the light-heat conversion mechanism of the present application;

[0018] Figure 4 is the installation structure of the circular ring light-heat conversion layer of the present application;

[0019] Figure 5 is the cross-sectional structure schematic diagram of the circular ring light-heat conversion layer of the present application;

[0020] Figure 6 is another structure schematic diagram of the cross section of the circular ring light-heat conversion layer of the present application;

[0021] Figure 7 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 8 This is a diagram of the absorption bands of optical conversion materials.

[0023] In the figure, 1. Endoscope eyepiece mechanism; 2. Endoscope body; 3. Imaging mechanism; 4. Light source interface mechanism; 5. Photothermal conversion mechanism; 6. First photothermal conversion layer; 7. Second photothermal conversion layer; 8. Light guide layer; 9. Imaging optical path; 10. Objective lens; 11. Objective lens; 12. Interface fixing body; 13. Light source interface pipe; 14. Connector; 15. Eyepiece cover; 16. Illumination mechanism; 17. Circular photothermal conversion layer. Detailed Implementation

[0024] First, let me explain the original design intention of this invention. An endoscope is a detection instrument that integrates traditional optics, ergonomics, precision mechanics, modern electronics, mathematics, and software. Over time, endoscopes have gradually developed some defects that seriously affect their normal use. For example, when using existing rigid optical endoscopes, due to the temperature difference between the body and the endoscope, water vapor inside the body will liquefy into a large amount of water droplets at the tip of the endoscope, forming water mist, which will cause blurred vision, affect the observation effect of the endoscope, and lead to greater surgical risks. Therefore, this invention designs an endoscope with a heating and defogging function.

[0025] The present invention will now be described in detail with reference to the accompanying drawings, such as... Figures 1-7 As shown, an endoscope with heating and defogging function includes an endoscope eyepiece mechanism 1 and an endoscope body 2. In order to meet the use of the endoscope, an imaging mechanism 3 is provided at one end of the endoscope body 2. The specific structure of the imaging mechanism 3 will be described in detail below. The imaging mechanism 3 includes an objective lens 10 provided at one end inside the endoscope body 2, and an objective lens 11 provided on the outside of the objective lens 10.

[0026] To ensure illumination during endoscopy, an illumination mechanism 16 and a photothermal conversion mechanism 5 are provided at the front end of the endoscope body. Since the endoscope needs an external light source during use, a light source interface mechanism 4 connected to the illumination mechanism 16 is provided at the rear end of the endoscope body 2. The specific structure of the light source interface mechanism 4 will be described in detail below. The light source interface mechanism 4 includes an interface fixing body 12, on which a light source interface pipe 13 is provided at a certain angle. A light source optical fiber is provided inside the light source interface pipe 13, which is connected to an external light source. The external light source is usually an LED cold light source, a xenon lamp light source, etc.

[0027] In order to solve the problem that when the endoscope is used, due to the temperature difference between the body temperature and the endoscope, the water vapor in the body will be liquefied into small water droplets to form water mist, and then cause the field of view to be blurred, which affects the observation effect of the endoscope, we set the photothermal conversion mechanism 5 at the front end and inside of the endoscope body 2, and the specific structure of the photothermal conversion mechanism 5 will be introduced in detail below. Usually, the photothermal conversion mechanism 5 at the front end of the endoscope body 2 is provided with two structures, one of which is a circular ring-shaped photothermal conversion layer 17 provided at the front end of the endoscope body 2, as shown in Figures 4-6 , the cross-sectional shape of the circular ring-shaped photothermal conversion layer 17 is a circular ring, and the circular ring-shaped photothermal conversion layer 17 is made of a photothermal conversion material. This optical conversion material has the following characteristics: partially transmitting and partially absorbing the received light source, a part of the light emitted by the external light source is absorbed and converted by the heat-absorbing material to generate heat, and a part is transmitted for illumination. In addition, as shown in Figure 8 , this photothermal conversion material can absorb the near-infrared band (such as 680-800nm) in the spectrum of the external light source to generate heat; during production, the material quality of the photothermal conversion layer can be adjusted to change the wavelength that can be absorbed and converted by the material and its optical transmittance; under this structure, the photothermal conversion mechanism 5 inside the endoscope body 2 has two setting methods, the first one is to set the first photothermal conversion layer 6 in contact with the inner wall of the endoscope body 2, which can be replaced by a heat-conducting wire layer during actual use, and the second photothermal conversion layer 7 is also provided inside the endoscope body 2, and a light guide layer 8 is provided between the first photothermal conversion layer 6 and the second photothermal conversion layer 7. The second one is to set the second photothermal conversion layer 7 in the endoscope body 2, and a light guide layer 8 is provided between the second photothermal conversion layer 7 and the inner wall of the endoscope body 2. When this method is used, a part of the light transmitted by the light guide layer 8 is transmitted through the circular ring-shaped photothermal conversion layer for illumination, and a part is absorbed by the circular ring-shaped photothermal conversion layer and generates heat.

[0028] The other structure of the photothermal conversion mechanism 5 at the front end of the endoscope body 2 is provided with two layers, as shown in Figures 2-3As shown, the first light-heat conversion layer 6 and the second light-heat conversion layer 7 are arranged inside the endoscope body 2, the cross-sectional shape of the first light-heat conversion layer 6 is crescent-shaped, and the cross-sectional shape of the second light-heat conversion layer 7 is Ω-shaped. The first light-heat conversion layer 6 and the second light-heat conversion layer 7 are made of light-heat conversion material. Under this structure, the light-heat conversion mechanism 5 inside the endoscope body 2 has two arrangement modes. The first mode is that the first light-heat conversion layer 6 is arranged in contact with the inner wall of the endoscope body 2. The first light-heat conversion layer 6 can be replaced by a heat-conducting wire layer in actual use. The second light-heat conversion layer 7 is also arranged inside the endoscope body 2. A light guide layer 8 is arranged between the first light-heat conversion layer 6 and the second light-heat conversion layer 7. The second mode is that the second light-heat conversion layer 7 is arranged inside the endoscope body 2. A light guide layer 8 is arranged between the second light-heat conversion layer 7 and the inner wall of the endoscope body 2. When this mode is used, part of the light transmitted by the light guide layer 8 passes through the annular light-heat conversion layer for illumination, and part of the light is absorbed by the annular light-heat conversion layer to generate heat.

[0029] In order to ensure the overall heating function of the endoscope, the first light-heat conversion layer 6 and the second light-heat conversion layer 7 are attached to the inner wall of the endoscope body 2. Through the attachment, the overall heating of the endoscope body 2 is realized.

[0030] In order to guide the external light source, a light guide layer 8 is arranged between the first light-heat conversion layer 6 and the second light-heat conversion layer 7. The light guide layer 8 is internally provided with a plurality of imaging light paths 9 arranged in a certain rule. The light guide layer 8 is made of light guide fiber. The outer wall of the light guide layer 8 is attached to the first light-heat conversion layer 6, the second light-heat conversion layer 7, and the inner wall of the endoscope body 2, respectively.

[0031] The light guide layer 8 is composed of two parts. One part of the light guide layer 8 is aligned with the front end face of the first light-heat conversion layer 6 and the second light-heat conversion layer 7. The other part of the light guide layer 8 is aligned with the rear end face of the first light-heat conversion layer 6 and the second light-heat conversion layer 7.

[0032] In use, the external light source device transmits light into the light guide layer 8 of the endoscope through the light source interface mechanism 4, and the light in the light guide layer 8 is transmitted to the front end of the endoscope through total reflection; then, part of the wave bands in the light spectrum emitted by the light guide layer aligned with the rear end face of the first light-heat conversion layer 6 and the second light-heat conversion layer 7 is absorbed and converted by the first light-heat conversion layer 6 and the second light-heat conversion layer 7 to generate heat, and the first light-heat conversion layer 6 and the second light-heat conversion layer 7 are in contact with the inner wall of the endoscope lens, so that the heat is transmitted to the endoscope lens through the contact surface, so that the endoscope lens and the front end of the endoscope can maintain a high temperature, and the other part of the light can be transmitted through the light-heat conversion layer for illumination, and the light emitted by the light guide layer aligned with the front end face of the first light-heat conversion layer 6 and the second light-heat conversion layer 7 is directly used for illumination; this structure can not only maintain good illumination effect of the endoscope, but also effectively avoid the influence of water mist formed by using ultrasonic knife and other factors on the endoscope during operation, greatly facilitate the use of the operator, and improve the observation effect of the endoscope and reduce the risk of using the endoscope for operation.

[0033] The endoscope eyepiece mechanism 1 is convenient for the user to observe, and the specific structure of the endoscope eyepiece mechanism 1 will be described in detail below. The endoscope eyepiece mechanism 1 comprises a connecting body 14 connected with the light source interface mechanism 4, and an eyepiece cover 15 is arranged at the end of the connecting body 14 away from the light source interface mechanism 4, and the eyepiece cover 15 and the connecting body 14 are made of one-piece molding.

[0034] The above technical solution only embodies the preferred technical solution of the technical solution of the present application, and some changes made by the person skilled in the art to some parts thereof all embody the principle of the present application and are within the protection scope of the present application.

Claims

1. An endoscope with a heating and defogging function, characterized in that, The endoscope eyepiece mechanism (1) comprises an endoscope body (2), and the front end of the endoscope body (2) is provided with an illumination mechanism (16), an imaging mechanism (3) and a light-heat conversion mechanism (5); the rear end of the endoscope body (2) is provided with a light source interface mechanism (4) connected with the illumination mechanism (16); and the inside of the endoscope body (2) is also provided with the light-heat conversion mechanism (5). The light-heat conversion mechanism (5) comprises a first light-heat conversion layer (6) and a second light-heat conversion layer (7) arranged inside and at the front end of the endoscope body (2); the first light-heat conversion layer (6) and the second light-heat conversion layer (7) are respectively attached to the inner wall of the endoscope body (2); and a light guide layer (8) is arranged between the first light-heat conversion layer (6) and the second light-heat conversion layer (7). The light guide layer (8) is composed of two parts, one part of the light guide layer (8) is aligned with the front end face of the first light-heat conversion layer (6) and the second light-heat conversion layer (7), and the other part of the light guide layer (8) is aligned with the rear end face of the first light-heat conversion layer (6) and the second light-heat conversion layer (7). Part of the wave band in the light spectrum emitted by the light guide layer (8) aligned with the rear end face of the first light-heat conversion layer (6) and the second light-heat conversion layer (7) is absorbed and converted by the first light-heat conversion layer (6) and the second light-heat conversion layer (7) to generate heat, and the heat is directly transmitted to the endoscope body (2) and the front end of the endoscope through the attached surface of the first light-heat conversion layer (6) and the second light-heat conversion layer (7) and the endoscope body (2); and the light guide layer (8) is used for conducting part of the light energy of the light source to the illumination mechanism (16) to realize illumination. The cross-sectional shape of the first light-heat conversion layer (6) is crescent-shaped, and the cross-sectional shape of the second light-heat conversion layer (7) is omega-shaped. The first light-heat conversion layer (6) and the second light-heat conversion layer (7) are made of light-heat conversion material which can absorb near-infrared wave band in the light spectrum of external light source to generate heat.

2. The endoscope having a heating defogging function according to claim 1, characterized by, The center part of the endoscope body (2) is provided with an imaging light path (9) composed of a plurality of columnar lenses arranged in a certain rule.

3. The endoscope according to claim 2, wherein The light guide layer (8) is a light guide fiber bundle made of a plurality of light guide fiber filaments.

4. The endoscope having a heating defogging function according to claim 1, characterized by The imaging mechanism (3) comprises an objective lens (10) arranged at one end inside the endoscope body (2), and the outer side of the objective lens (10) is provided with an objective lens (11).

5. The endoscope having a heating defogging function according to claim 1, characterized in that, The light source interface mechanism (4) comprises an interface fixed body (12) provided with a light source interface pipeline (13) arranged at a certain angle, and a light source optical fiber is arranged in the light source interface pipeline (13); and the light source optical fiber is connected with an external light source.

6. The endoscope having a heating defogging function according to claim 1, wherein The endoscope eyepiece mechanism (1) comprises a connecting body (14) connected with the light source interface mechanism (4), and the connecting body (14) is integrally formed with an eyepiece cover (15) at the end away from the light source interface mechanism (4).

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