Head end structure of endoscope and endoscope

Abstract

The head end structure of the endoscope comprises a mounting head part, a complementary metal oxide semiconductor (CMOS) module and at least one lighting device, and the mounting head part is provided with a mounting cavity; the CMOS module is arranged in the mounting cavity in a square shape and abuts against the inner wall of the mounting cavity in the vertical direction. The at least one lighting device is arranged in the mounting cavity, the lighting device is arranged in a long shape, the long edge of the at least one lighting device is attached to the two side faces of the CMOS module respectively in the transverse direction, and at least part of the short edge of the lighting device abuts against the inner wall of the mounting cavity in the vertical direction; wherein the side length of the CMOS module is L1, the short side length of at least one lighting device is L2, the long side length of each lighting device is L3, L1 + L2 is larger than or equal to 0.9 mm and smaller than or equal to 1.1 mm, L2 is larger than 0 and smaller than or equal to 0.35 mm, and L3 is larger than or equal to L2 and smaller than or equal to 0.59 mm.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a head end structure of an endoscope and an endoscope. Background Art

[0002] Taking the choledochoscope as an example, an endoscope is a medical optical endoscope designed for endoscopic examination and endoscopic surgery of the pancreatic and biliary ducts. For example, percutaneous transhepatic cholangioscopy lithotripsy, abbreviated as PTCS in English, is to establish a channel from the skin to the biliary duct in the abdomen, insert the choledochoscope into the biliary duct through this channel, and use lithotripsy tools such as lasers and ultrasounds to break and remove biliary stones.

[0003] Currently, hepatobiliary surgeons use rigid choledochoscopes for the diagnosis and treatment of diseases in the biliary tract. The current outer diameters of the ultra-fine head ends of disposable imaging catheters are mainly 3.0 mm and 3.7 mm, and this outer diameter cannot reach the bile and pancreatic ducts during ERCP (endoscopic retrograde cholangiopancreatography) surgery.

[0004] The above content is only used to assist in understanding the technical solution of the utility model, and does not represent an admission that the above content is prior art. Summary of the Utility Model

[0005] The main purpose of the utility model is to provide a head end structure of an endoscope and an endoscope, aiming to solve the problem of the too large outer diameter of the head end structure of the endoscope in the prior art.

[0006] To achieve the above purpose, the utility model provides a head end structure of an endoscope, and the head end structure of the endoscope includes:

[0007] An installation head having an installation cavity;

[0008] A CMOS module, which is arranged in the installation cavity in a square shape and is arranged in contact with the inner wall of the installation cavity along the vertical direction;

[0009] At least one lighting device, which is arranged in the installation cavity. The lighting device is arranged in a long shape, and the long sides of at least one lighting device are respectively abutted against both side surfaces of the CMOS module along the horizontal direction, and at least a part of the short sides of the lighting device are abutted against the inner wall of the installation cavity along the vertical direction;

[0010] Wherein, the side length of the CMOS module is L1, the short side length of at least one lighting device is L2, and the long side length of each lighting device is L3. 0.9 mm ≤ L1 + L2 ≤ 1.1 mm, 0 < L2 ≤ 0.35 mm, L2 ≤ L3 ≤ 0.59 mm.

[0011] Preferably, in the head end structure of the endoscope, there is also a working channel, which is arranged at intervals vertically with the installation cavity, and the interval between the working channel and the installation cavity is D1, where 0.1 ≤ D1 ≤ 0.2 mm.

[0012] Preferably, in the head end structure of the endoscope, there is also a liquid supply channel, which is located on one side of the working channel and the installation cavity, and is arranged at intervals with the working channel and the installation cavity respectively.

[0013] Preferably, in the head end structure of the endoscope, the interval between the liquid supply channel and the lighting device is D2, and the interval between the liquid supply channel and the working channel is D3, where 0.1 ≤ D2 ≤ 0.16 mm and 0.14 ≤ D3 ≤ 0.18 mm.

[0014] Preferably, in the head end structure of the endoscope, the number of the liquid supply channels is two, and the two liquid supply channels are respectively located on both sides of the installation cavity and the working channel.

[0015] Preferably, in the head end structure of the endoscope, the diameter of the liquid supply channel is d1, where 0.45 mm ≤ d1 ≤ 0.55 mm.

[0016] Preferably, in the head end structure of the endoscope, the diameter of the working channel is d2, where 1.1 mm ≤ d2 ≤ 1.3 mm.

[0017] Preferably, in the head end structure of the endoscope, 0.70 mm ≤ L1 ≤ 0.80 mm.

[0018] Preferably, in the head end structure of the endoscope, the lighting device is offset vertically relative to the CMOS module towards the outer diameter of the head end structure of the endoscope;

[0019] The installation cavity has an edge portion close to the liquid supply channel, and the edge portion is provided with an inner fillet towards the inside of the installation cavity.

[0020] To achieve the above object, the present invention provides an endoscope, and the endoscope includes the head end structure of the above-mentioned endoscope.

[0021] The present invention has at least the following beneficial effects:

[0022] In the present utility model, the CMOS module is square and disposed in the installation cavity, and abuts against the inner wall of the installation cavity along the vertical direction. The lighting device is rectangularly arranged, and the long sides of at least one lighting device are respectively abutted against the two side surfaces of the CMOS module along the horizontal direction, and at least a part of the short sides of the lighting device abuts against the inner wall of the installation cavity along the vertical direction. Wherein, the side length of the CMOS module is L1, the short side length of at least one lighting device is L2, and the long side length of each lighting device is L3, 0.9mm ≤ L1 + L2 ≤ 1.1mm, 0 < L2 ≤ 0.35mm, L2 ≤ L3 ≤ 0.59mm. In this way, while ensuring the use effect, the outer diameter can be reduced as much as possible, and the outer diameter can be reduced to 2.5mm.

[0023] Furthermore, through the optimization of the structural layout and the adjustment of the sizes of the CMOS module and the lighting device in the present utility model, the outer diameter can be reduced to 2.5mm, enabling the disposable imaging catheter to enter the bile and pancreatic ducts. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of an embodiment of the endoscope provided by the present utility model;

[0025] Figure 2 is Figure 1 a schematic diagram from another perspective.

[0026] Serial number Name Serial number Name 100 Head end structure of the endoscope 2 CMOS module 1 Mounting head 3 Illumination device 11 Mounting cavity 4 Working channel 111 Edge part 5 Liquid supply channel

[0027] The realization of the object, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. The present utility model will be described in detail below with reference to the drawings and embodiments. It should be noted that, without conflict, the embodiments and features in the embodiments of the present utility model can be combined with each other.

[0029] In the embodiments of the present utility model, the term "and / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0030] It should be noted that the terms "first", "second", etc. in the description and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence.

[0031] In the embodiments of the present utility model, the term "a plurality of" refers to two or more, and other quantifiers are similar thereto.

[0032] In the present utility model, unless otherwise stated, the orientation terms such as "upper, lower, top, bottom" are usually in reference to the direction shown in the drawings, or in reference to the vertical, perpendicular or gravitational direction of the component itself; similarly, for the convenience of understanding and description, "inner, outer" refer to the inner and outer of the contour of each component itself, but the above orientation terms are not used to limit the present utility model.

[0033] The present utility model provides a head end structure of an endoscope. Please refer to Figure 1 and Figure 2 , the head end structure 100 of the endoscope includes a mounting head 1, a CMOS module 2 and at least one lighting device 3. The mounting head 1 has a mounting cavity 11. The CMOS module 2 is square and disposed in the mounting cavity 11, and is in contact with the inner wall of the mounting cavity 11 along the vertical direction; at least one lighting device 3 is disposed in the mounting cavity 11. The lighting device 3 is rectangular. The long sides of at least one lighting device 3 are respectively in contact with both side surfaces of the CMOS module 2 along the horizontal direction, and at least a part of the short side of the lighting device 3 is in contact with the inner wall of the mounting cavity 11 along the vertical direction; wherein, the side length of the CMOS module 2 is L1, the short side length of at least one lighting device 3 is L2, and the long side length of each lighting device 3 is L3, 0.9 mm ≤ L1 + L2 ≤ 1.1 mm, 0 < L2 ≤ 0.35 mm, L2 ≤ L3 ≤ 0.59 mm.

[0034] Currently, hepatobiliary surgeons use rigid endoscopes for the diagnosis and treatment of biliary tract diseases. The current outer diameters of the ultra-fine head ends of disposable imaging catheters are mainly 3.0 mm and 3.7 mm, and this outer diameter cannot reach the bile and pancreatic ducts during ERCP (endoscopic retrograde cholangiopancreatography) surgery.

[0035] In the present utility model, the CMOS module 2 is square and disposed in the mounting cavity 11, and is in contact with the inner wall of the mounting cavity 11 along the vertical direction. The lighting device 3 is rectangular. The long sides of at least one lighting device 3 are respectively in contact with both side surfaces of the CMOS module 2 along the horizontal direction, and at least a part of the short side of the lighting device 3 is in contact with the inner wall of the mounting cavity 11 along the vertical direction; wherein, the side length of the CMOS module 2 is L1, the short side length of at least one lighting device 3 is L2, and the long side length of each lighting device 3 is L3, 0.9 mm ≤ L1 + L2 ≤ 1.1 mm, 0 < L2 ≤ 0.35 mm, L2 ≤ L3 ≤ 0.59 mm. In this way, while ensuring the use effect, the outer diameter can be reduced as much as possible, and the outer diameter can be reduced to 2.5 mm.

[0036] If the side length L1 of the CMOS module 2 is too large, it will affect the overall outer diameter size. If it is too small, it will affect the shooting effect. In this embodiment, 0.70 mm ≤ L1 ≤ 0.80 mm. It should be noted that the CMOS module 2 can be a CMOS camera.

[0037] Among them, the number of the lighting devices 3 is two, and the two lighting devices 3 are respectively attached to the two side surfaces of the CMOS module 2 along the horizontal direction. The short side length of each lighting device 3 is L21. Then, 0.9 mm ≤ L1 + 2L21 ≤ 1.1 mm, 0 < L21 ≤ 0.35 mm, L21 ≤ L3 ≤ 0.59 mm. In addition, the lighting device 3 can be but is not limited to an LED lamp.

[0038] Taking the case where the number of the lighting devices 3 is two as an example, the short side length L21 of each lighting device 3 is 0.24 mm, and the long side length L3 is 0.48 mm. The side length L1 of the CMOS module 2 is 0.72 mm.

[0039] The lighting device 3 is offset along the vertical direction relative to the CMOS module 2 towards the outer diameter of the head end structure 100 of the endoscope, so as to reserve the installation space of other components as much as possible and reduce the overall outer diameter.

[0040] The installation cavity 11 has an edge portion 111 close to the liquid delivery channel 5, and the edge portion 111 is provided with an inner fillet towards the inside of the installation cavity 11, so as to reserve the installation space of other components as much as possible and avoid affecting the size of the liquid delivery channel 5.

[0041] The head end structure 100 of the endoscope is further provided with a working channel 4 for accommodating instruments to facilitate the operation of doctors. The working channel 4 and the installation cavity 11 are arranged at intervals along the vertical direction, and the interval between the working channel 4 and the installation cavity 11 is D1. If D1 is too large, it will affect the size of the overall outer diameter and increase the outer diameter. If D1 is too small, it will increase the processing difficulty, affect the structural strength, and even cause interference with other components. In this embodiment, 0.1 ≤ D1 ≤ 0.2 mm. Specifically, in some preferred embodiments, D1 can also be 0.15 mm.

[0042] The distal end structure 100 of the endoscope further includes a liquid delivery channel 5. The installation cavity 11 of the liquid delivery channel 5 is located on one side of the working channel 4 and the installation cavity 11, and is spaced from the working channel 4 and the installation cavity 11 respectively. This can make the structural arrangement more compact and reduce the outer diameter size. The liquid delivery channel 5 is used to convey liquid. The distance between the liquid delivery channel 5 and the lighting device 3 is D2, and the distance between the liquid delivery channel 5 and the working channel 4 is D3. If D2 and D3 are too large, it will affect the size of the overall outer diameter and increase the overall outer diameter; if D2 and D3 are too small, it will increase the processing difficulty, affect the structural strength, and even cause interference with other components. Therefore, in this embodiment, 0.1 ≤ D2 ≤ 0.16 mm, 0.14 ≤ D3 ≤ 0.18 mm. Specifically, in some preferred embodiments, D2 is 0.11 mm and D3 is 0.15 mm.

[0043] The number of the liquid delivery channels 5 is usually two, and the two liquid delivery channels 5 are respectively located on both sides of the installation cavity 11 and the working channel 4. One liquid delivery channel 5 can be used to discharge water to the part to be operated, and the other can be used to drain the water from the part to be operated. Specifically, how to set it can be determined according to needs. In other embodiments, it can also be that both of the two liquid delivery channels 5 are used for discharging water, and the drain pipe is arranged in the working channel 4.

[0044] The diameter of the liquid delivery channel 5 is d1. If d1 is too large, it will affect the overall outer diameter and cause the overall outer diameter to increase; if d1 is too small, it will affect the use effect. In this embodiment, 0.45 mm ≤ d1 ≤ 0.55 mm. Preferably, d1 is 0.5 mm.

[0045] The diameter of the working channel 4 is d2. If d2 is too large, it will affect the overall outer diameter and cause the overall outer diameter to increase; if d2 is too small, it will affect the use effect. In this embodiment, 1.1 mm ≤ d2 ≤ 1.3 mm. Preferably, d2 is 1.2 mm.

[0046] The present invention also provides an endoscope, which includes the distal end structure 100 of the above endoscope. The embodiments of this endoscope include the embodiments of the distal end structure 100 of the above endoscope, and the beneficial effects of the distal end structure 100 of the above endoscope can be applied to this endoscope.

[0047] The present invention also provides a medical device, which includes the above endoscope. The embodiments of this medical device include the embodiments of the above endoscope, and the beneficial effects of the above endoscope can be applied to this medical device.

[0048] Obviously, the above-described embodiments are only a part of the embodiments of the present utility model, rather than all of them. Based on the embodiments of the present utility model, those of ordinary skill in the art can make other different forms of changes or modifications without creative efforts, and all of them should fall within the scope of protection of the present utility model.

Claims

1. The head end structure of an endoscope, characterized in that, Comprising: An installation head having an installation cavity; A CMOS module, which is square and disposed in the installation cavity and abuts against the inner wall of the installation cavity along the vertical direction; At least one lighting device, which is disposed in the installation cavity. The lighting device is rectangular. The long side of at least one lighting device is respectively abutted against both side surfaces of the CMOS module along the horizontal direction, and at least part of the short side of the lighting device abuts against the inner wall of the installation cavity along the vertical direction; Wherein, the side length of the CMOS module is L1, the short side length of at least one lighting device is L2, and the long side length of each lighting device is L3, 0.9mm ≤ L1 + L2 ≤ 1.1mm, 0 < L2 ≤ 0.35mm, L2 ≤ L3 ≤ 0.59mm.

2. The head end structure of the endoscope according to claim 1, characterized in that, It further includes a working channel, which is arranged at intervals with the installation cavity along the vertical direction. The interval between the working channel and the installation cavity is D1, 0.1 ≤ D1 ≤ 0.2mm.

3. The distal end structure of the endoscope according to claim 2, characterized in that, It further includes a liquid supply channel, which is located on one side of the working channel and the installation cavity and is respectively arranged at intervals with the working channel and the installation cavity.

4. The distal end structure of the endoscope according to claim 3, characterized in that, The interval between the liquid supply channel and the lighting device is D2, and the interval between the liquid supply channel and the working channel is D3, 0.1 ≤ D2 ≤ 0.16mm, 0.14 ≤ D3 ≤ 0.18mm.

5. The distal end structure of the endoscope according to claim 4, characterized in that The number of the liquid supply channels is two, and the two liquid supply channels are respectively located on both sides of the installation cavity and the working channel.

6. The distal end structure of the endoscope according to claim 3, characterized in that, The diameter of the liquid supply channel is d1, 0.45mm ≤ d1 ≤ 0.55mm.

7. The distal end structure of the endoscope according to claim 2, characterized in that, The diameter of the working channel is d2, 1.1mm ≤ d2 ≤ 1.3mm; And / or, 0.70mm ≤ L1 ≤ 0.80mm.

8. The head end structure of the endoscope according to claim 1, characterized in that, The lighting device is offset along the vertical direction relative to the CMOS module towards the outer diameter of the head end structure of the endoscope.

9. The distal end structure of the endoscope according to claim 1, characterized in that, The installation cavity has an edge portion close to the liquid supply channel, and the edge portion is provided with an inner fillet towards the inside of the installation cavity.

10. An endoscope, characterized in that, It includes the head end structure of the endoscope according to any one of claims 1 to 9.

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