A medical hard tube endoscope

Abstract

The utility model provides a medical hard tube endoscope, wherein the endoscope tube and the socket are arranged at the two ends of the main body, and the optical cable connector is arranged at the third end of the main body; the internal space formed by the main body and the socket is provided with an observation window assembly, an eyepiece assembly and an imaging optical assembly; the eyepiece assembly is connected to the main body through the imaging optical assembly, the first end of the socket is connected to the imaging optical assembly, the second end of the socket is provided with an observation window assembly inside, and the eyepiece cover is connected to the outside sleeve; the observation window assembly is also connected to the second end of the socket through a No. 1 sealing ring, and the imaging optical assembly is connected to the socket through a No. 2 sealing ring; the endoscope tube passes through the main body and enters the imaging optical assembly to be arranged corresponding to the eyepiece assembly, and the endoscope tube is connected to the light guide connector of the imaging optical assembly through a No. 3 sealing ring; and the light guide connector can also be connected to the main body through a No. 3 sealing ring. The utility model further improves the overall sealing of the endoscope by using three sealing rings in combination.

Description

Technical Field

[0001] The utility model belongs to the field of endoscopes, in particular to a medical hard tube endoscope. Background Art

[0002] The endoscope includes a working intervention end and a main working end. The working intervention end is inserted into the human body and the relevant scope channel inserted into the human body. The main end is directly connected to the insertion end, and also includes an eyepiece cover that acts as an image adapter and an optical cable connector that is adapted to connect the optical cable. The imaging system of the endoscope is inside the endoscope, and the light-guiding optical fiber that provides lighting for the endoscope is also inside the endoscope. The light-guiding optical fiber is connected to the optical cable connector connected to the main body at the far end. The imaging system of the image is included inside the light guide and through optical elements such as the eyepiece. Through the eyepiece cover, the eyepiece cover is connected to a dedicated imaging device as an adapter, and it can also be observed directly through the eyepiece cover. The eyepiece cover has a transparent observation window to protect and seal the internal components. The actual use scenarios include surgery, storage and disinfection. In particular, during disinfection, the endoscope undergoes a variety of disinfection methods including high-pressure steam disinfection, low-temperature plasma disinfection, and glutaraldehyde immersion.

[0003] To prevent contaminants from entering between different parts and structures, thereby contaminating the internal optical components and affecting the imaging and normal use of the product, poor sealing may also cause parts to fall off, which seriously affects the normal use of the product. The sealing of endoscopes used for a long time in different environments is crucial to the life and reliability of the product. Utility Model Content

[0004] In view of this, the present invention aims to provide a medical rigid tube endoscope, which ensures that the endoscope can be used for a long time by improving its structure and ensuring good imaging characteristics and sealing.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0006] A medical rigid tube endoscope comprises a main body, an endoscope tube, an optical cable connector and a connector sleeve; the endoscope tube is arranged at a first end of the main body, the connector sleeve is arranged at a second end of the main body, and the optical cable connector is arranged at a third end of the main body;

[0007] The internal space formed by the main body and the socket is provided with a coaxially arranged observation window assembly, an eyepiece assembly and an imaging optical assembly;

[0008] The eyepiece assembly is connected to the main body through the imaging optical assembly. The first end of the sleeve is connected to the imaging optical assembly. The second end of the sleeve is provided with an observation window assembly on the inner side and an eyepiece cover on the outer side.

[0009] The observation window assembly is further connected to the second end of the connector through a No. 1 sealing ring, and the imaging optical assembly is connected to the connector through a No. 2 sealing ring;

[0010] The endoscope tube passes through the main body and enters the imaging optical assembly and is arranged corresponding to the eyepiece assembly.

[0011] The endoscope tube is connected to the light-guiding connector of the imaging optical component through a No. 3 sealing ring; and the light-guiding connector can also be connected to the main body through a No. 3 sealing ring.

[0012] Furthermore, the observation window assembly includes an observation window seat and an observation window body. The observation window seat is threadedly connected to the socket. A No. 1 sealing groove is provided on the circumferential surface of the observation window seat, and a No. 1 sealing ring is provided in the No. 1 sealing groove. The observation window body is installed to the observation window seat.

[0013] Furthermore, the No. 1 sealing ring is an O-ring, and the inner concave surface of the eyepiece cover is flush with the observation window body, forming a smooth transition.

[0014] Furthermore, the eyepiece assembly includes an eyepiece body, an eyepiece barrel, a rotating mirror body, an adjusting member, an eyepiece connecting member and a fixing member;

[0015] The eyepiece body is installed in the eyepiece barrel, and the eyepiece barrel is installed in the eyepiece barrel through a connecting piece. An adjusting piece is also provided between the eyepiece barrel and the eyepiece connecting piece.

[0016] The rotating mirror body is arranged in the eyepiece barrel through a fixing piece.

[0017] Furthermore, the imaging optical assembly includes a light guide connector, an inner tube and a light guide tube; the rotating mirror body, the light guide tube, the inner tube and the endoscope tube are arranged in sequence from the inside to the outside.

[0018] The rotating mirror body passes through the main body, the No. 3 sealing ring, the light guide connector, the eyepiece connector and the eyepiece connector through the fixing part to be connected with the eyepiece connector;

[0019] The outer wall of the endoscope tube is in contact with the main body, the outer wall of the inner tube is in contact with the No. 3 sealing ring and the light guide connector, and the light guide tube is in contact with the eyepiece connector.

[0020] Furthermore, the optical fiber of the optical cable connector passes between the inner tube and the endoscope tube.

[0021] Furthermore, the inner surface of the first end of the connecting sleeve is a conical structure, so that the surface in contact with the second sealing ring is an inclined surface.

[0022] Furthermore, a groove is provided on the circumferential surface of one end of the light guide connector.

[0023] The third sealing ring is C-shaped, with a through hole in the middle and a raised structure corresponding to the groove of the light guide connector formed on the inner side of the third sealing ring;

[0024] A step structure is provided on the outer side of the No. 3 sealing ring, and the step structure is used to make close contact with the main body.

[0025] Furthermore, the position where the step structure contacts the main body is arc-shaped.

[0026] Compared with the prior art, the medical rigid tube endoscope described in the present invention has the following advantages:

[0027] (1) The utility model relates to a medical hard tube endoscope, which forms a seal on the inner cavity of the entire transparent observation window through the cooperation of a No. 1 sealing ring, an observation window seat and an observation window seat body.

[0028] (2) The utility model is a medical hard tube endoscope, which forms a seal on the internal cavity by cooperating with the inclined surface of the eyepiece cover sleeve through the No. 2 sealing ring.

[0029] (3) The utility model is a medical hard tube endoscope, which has a No. 2 sealing ring that is tightly attached to the main body on the outside and tightly wrapped around the inner tube on the inside, thereby forming a sealing effect between the space formed by the inside of the main body and the supporting connecting piece and the space formed on the other side of the supporting connecting piece.

[0030] (4) The utility model provides a medical hard tube endoscope, which further improves the overall sealing performance of the endoscope by using three sealing rings in combination. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0032] Figure 1 This is a schematic diagram of a medical rigid tube endoscope according to an embodiment of the present utility model;

[0033] Figure 2 This is a cross-sectional view of a medical hard tube endoscope according to an embodiment of the present utility model;

[0034] Figure 3 This is a cross-sectional view of the No. 3 sealing ring described in an embodiment of the present utility model.

[0035] Description of reference numerals:

[0036] 1. Main body; 2. Endoscope tube; 3. Optical cable connector; 4. Connector; 5. Observation window assembly; 51. Observation window seat; 52. Observation window body; 6. Eyepiece assembly; 61. Eyepiece body; 62. Eyepiece barrel; 63. Rotating mirror body; 64. Adjustment part; 65. Eyepiece connector; 66. Fixing part; 67. Eyepiece cover; 7. Imaging optical assembly; 71. Light guide connector; 72. Inner tube; 73. Light guide tube; 8. Sealing ring No. 1; 9. Sealing ring No. 2; 10. Sealing ring No. 3; 11. Optical fiber. DETAILED DESCRIPTION

[0037] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0039] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0040] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0041] A medical hard tube endoscope, such as Figure 1-Figure 3 As shown, it includes a main body 1, an endoscope tube 2, an optical cable connector 3 and a socket 4; the endoscope tube 2 is arranged at the first end of the main body 1, the socket 4 is arranged at the second end of the main body 1, and the optical cable connector 3 is arranged at the third end of the main body 1;

[0042] The inner space formed by the main body 1 and the socket 4 is provided with a coaxially arranged observation window assembly 5, an eyepiece assembly 6 and an imaging optical assembly 7;

[0043] The eyepiece assembly 6 is connected to the main body 1 through the imaging optical assembly 7. The first end of the socket 4 is connected to the imaging optical assembly 7. The second end of the socket 4 is provided with an observation window assembly 5 on the inner side and an eyepiece cover 67 on the outer side.

[0044] The observation window assembly 5 is further connected to the second end of the connecting sleeve 4 through the first sealing ring 8, and the imaging optical assembly 7 is connected to the connecting sleeve 4 through the second sealing ring 9;

[0045] The endoscope tube 2 passes through the main body 1 and enters the imaging optical component 7 and is arranged corresponding to the eyepiece component 6.

[0046] The endoscope tube 2 is connected to the light guide connector 71 of the imaging optical component 7 through the No. 3 sealing ring 10; and the light guide connector 71 can also be connected to the main body 1 through the No. 3 sealing ring 10.

[0047] Preferably, the observation window assembly 5 includes an observation window seat 51 and an observation window body 52. ​​The observation window seat 51 is threadedly connected to the socket 4. A No. 1 sealing groove is provided on the circumferential surface of the observation window seat 51. A No. 1 sealing ring 8 is provided in the No. 1 sealing groove. The observation window body 52 is installed on the observation window seat 51.

[0048] When assembling the observation window seat 51 structure, the observation window seat 51 and the transparent observation window body 52 can be sealed first. The specific sealing method can be to use glue at the connection between the observation window seat 51 and the transparent observation window at the opening inside the observation window seat 51.

[0049] Since the transparent observation window body 52 is made of transparent glass and the observation window seat 51 is made of metal, a filler can be used at the joint between the two to better withstand high temperature and high pressure, as well as a sterilization environment. The filling method and filler can be various means such as gold-tin eutectic welding, high-temperature brazing, kovar material, and other technical means to meet the needs;

[0050] After filling, the observation window seat 51 and the transparent observation window are fixed to the entire eyepiece cover 67 socket 4, which is more compact, so that various packaging can be carried out in batches more conveniently; the packaged observation window seat 51 is then used to seal the eyepiece cover 67 socket 4 with a sealing ring;

[0051] The use of such an observation window seat 51 and its matching structure can prevent contaminants from entering the internal cavity. The sealing ring is compressed and tightly attached to the inner side of the step groove of the observation window seat 51 and the eyepiece cover 67 socket 4, forming a sealed structure.

[0052] However, the existing structures on the market have the disadvantages of being bulky, having poor versatility, and being difficult to mass-produce. The sealing position is not easy to achieve a sealing effect due to process requirements.

[0053] Preferably, the first sealing ring 8 is an O-ring, and the inner concave surface of the eyepiece cover 67 is flush with the observation window body 52, forming a smooth transition. The observation window seat 51 cooperates with the eyepiece cover 67 socket 4 and the external eyepiece cover 67. By rotating and adjusting the observation window seat 51, the outer flat portion of the transparent observation window and one side of the concave surface of the eyepiece cover 67 can be rotated and adjusted to form a smooth transition;

[0054] The excessive smoothing here is to avoid residual liquid during disinfection or wiping, which is more conducive to cleaning. In terms of appearance consistency, excessive smoothing will not cause poor connection effects such as concave platforms or gaps.

[0055] Preferably, the eyepiece assembly 6 includes an eyepiece body 61, an eyepiece barrel 62, a rotating mirror body 63, an adjusting member 64, an eyepiece connecting member 65 and a fixing member 66;

[0056] The eyepiece body 61 is installed in the eyepiece barrel 62, and the eyepiece barrel 62 is installed in the eyepiece barrel 62 through a connecting piece. An adjusting piece 64 is also provided between the eyepiece barrel 62 and the eyepiece connecting piece 65.

[0057] The rotating mirror body 63 is disposed in the eyepiece barrel 62 via a fixing member 66 .

[0058] Preferably, the imaging optical assembly 7 includes a light guide connector 71, an inner tube 72 and a light guide tube 73; the rotating mirror body 63, the light guide tube 73, the inner tube 72 and the endoscope tube 2 are arranged in sequence from the inside to the outside.

[0059] The rotating mirror body 63 passes through the main body 1, the third sealing ring 10, the light guide connector 71, and the eyepiece connector 65 and is connected to the eyepiece connector 65 through the fixing member 66;

[0060] The outer wall of the endoscope tube 2 is in contact with the main body 1 , the outer wall of the inner tube 72 is in contact with the No. 3 sealing ring 10 and the light guide connector 71 , and the light guide 73 is in contact with the eyepiece connector 65 .

[0061] When there are contaminants on the optical fiber 11, such as uncured glue used to fix internal parts, water vapor that has penetrated through the gaps between the optical fibers 11 for a long time can enter the interior of the inner tube 72 through the light-guiding connector 71 and the gap between the inner tube 72. A No. 3 sealing ring 10 is placed between the light-guiding connector 71 and the inner tube 72, between the light-guiding connector 71 and the main body 1. The sealing ring and the light-guiding connector 71 together cover the outside of the inner tube 72. The No. 3 sealing ring 10 is tightly attached to the main body 1 on the outside, and tightly wrapped around the inner tube 72 on the inside, forming a seal between the space formed between the interior of the main body 1 and the light-guiding connector 71, and the space formed on the other side of the light-guiding connector 71.

[0062] The third sealing ring 10 has a step that matches the step on the supporting connector, which can better fix it and prevent it from falling off. At the same time, the third sealing ring 10 is elastic and has an arc-shaped structure on the outside. The arc tightly adheres to the main body 1 to form a seal. The arc transition allows for better installation and provides better elastic protection.

[0063] Preferably, the optical fiber 11 of the optical cable connector 3 passes between the inner tube 72 and the endoscope tube 2 .

[0064] Preferably, the inner surface of the first end of the connector 4 is a conical structure, so that the surface in contact with the second sealing ring 9 is an inclined surface. In actual operation, compared with the machining accuracy and operation difficulty of a flat surface, the use of an inclined surface can better protect the integrity of the sealing ring and is more convenient for pressing to achieve a sealing effect.

[0065] Preferably, a groove is provided on the circumferential surface of one end of the light guide connector 71.

[0066] The third sealing ring 10 is C-shaped, with a through hole in the middle of the third sealing ring 10 and a convex structure corresponding to the groove of the light guide connector 71 formed on the inner side of the third sealing ring 10;

[0067] The outer side of the third sealing ring 10 is provided with a stepped structure, which is used to achieve close contact with the main body 1. The contact surface of the supporting connector that cooperates with the second sealing ring 9 is beveled; this bevel provides better installation guidance, allowing the second sealing ring 9 to be compressed more stably to form a seal. Preferably, the contact point of the stepped structure with the main body 1 is arc-shaped.

[0068] Specifically, such as Figure 3As shown, the No. 3 sealing ring 10 forms three surfaces, B1, B2, and B3. Surface B1 is used to better ensure the seal between the eyepiece cover 67 connector 4 and the No. 3 sealing ring 10, preventing external moisture or contaminants from entering the light guide through the gap there. Surface B2 can prevent moisture or contaminants in the light guide fiber 11 from entering the rear optical component portion through the gap between the inner tube 72 and the No. 3 sealing ring 10, thereby affecting the imaging of the rigid tube endoscope. Surface B3 serves to fasten the No. 3 sealing ring 10 to the supporting connector. This structure uses the elastic deformation of the No. 3 sealing ring 10 for installation and clamping, thereby preventing the No. 3 sealing ring 10 from falling off during operation.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A medical hard tube endoscope, characterized in that: It comprises a main body, an endoscope tube, an optical cable connector and a socket; the endoscope tube is arranged at the first end of the main body, the socket is arranged at the second end of the main body, and the optical cable connector is arranged at the third end of the main body; The internal space formed by the main body and the socket is provided with a coaxially arranged observation window assembly, an eyepiece assembly and an imaging optical assembly; The eyepiece assembly is connected to the main body through the imaging optical assembly, the first end of the sleeve is connected to the imaging optical assembly, the second end of the sleeve is provided with an observation window assembly inside, and the eyepiece cover is sleeved outside; The observation window assembly is also connected to the second end of the sleeve through a No. 1 sealing ring, and the imaging optical assembly is connected to the sleeve through a No. 2 sealing ring; The endoscope tube passes through the main body and enters the imaging optical component and is arranged corresponding to the eyepiece component. The endoscope tube is connected to the light-guiding connector of the imaging optical component through a No. 3 sealing ring; and the light-guiding connector can also be connected to the main body through a No. 3 sealing ring.

2. A medical hard tube endoscope according to claim 1, characterized in that: The observation window assembly comprises an observation window seat and an observation window body. The observation window seat is threadedly connected to the socket. A No. 1 sealing groove is provided on the circumferential surface of the observation window seat. A No. 1 sealing ring is provided in the No. 1 sealing groove. The observation window body is installed to the observation window seat.

3. A medical hard tube endoscope according to claim 2, characterized in that: The No. 1 sealing ring is an O-ring, and the inner concave surface of the eyepiece cover is flush with the observation window body to form a smooth transition.

4. A medical hard tube endoscope according to claim 1, characterized in that: The eyepiece assembly comprises an eyepiece body, an eyepiece barrel, a rotating mirror body, an adjusting part, an eyepiece connecting part and a fixing part; The eyepiece body is installed in the eyepiece barrel, and the eyepiece barrel is installed in the eyepiece barrel through a connecting piece, and an adjusting piece is also provided between the eyepiece barrel and the eyepiece connecting piece. The rotating mirror body is arranged in the eyepiece barrel through a fixing piece.

5. A medical hard tube endoscope according to claim 4, characterized in that: The imaging optical assembly includes a light guide connector, an inner tube and a light guide tube; the rotating mirror body, the light guide tube, the inner tube and the endoscope tube are arranged in sequence from the inside to the outside. The rotating mirror body passes through the main body, the No. 3 sealing ring, the light guide connector, the eyepiece connector and is connected with the eyepiece connector through the fixing part; The outer wall of the endoscope tube is in contact with the main body, the outer wall of the inner tube is in contact with the No. 3 sealing ring and the light guide connector, and the light guide is in contact with the eyepiece connector.

6. A medical hard tube endoscope according to claim 5, characterized in that: The optical fiber of the optical cable connector passes between the inner tube and the endoscope tube.

7. A medical hard tube endoscope according to claim 1, characterized in that: The inner surface of the first end of the connecting sleeve is a conical structure, so that the surface in contact with the second sealing ring is an inclined surface.

8. The medical hard tube endoscope according to claim 5, characterized in that: A groove is provided on the circumferential surface of one end of the light guide connector. The third sealing ring is in a C shape, a through hole is provided in the middle of the third sealing ring, and a convex structure corresponding to the groove of the light guide connector is formed on the inner side of the third sealing ring; A step structure is provided on the outer side of the third sealing ring, and the step structure is used for making close contact with the main body.

9. A medical hard tube endoscope according to claim 8, characterized in that: The position where the step structure contacts the main body is in an arc shape.

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