Endoscope head end and endoscope

Abstract

The present invention relates to the technical field of medical devices, and provides an endoscope lens end and an endoscope, wherein the endoscope lens end includes a head end seat, an imaging module and an image sensing module, the imaging module includes a lens barrel and an optical element arranged in the lens barrel, a first mounting hole is arranged on the head end seat, the image sensing module is connected to the rear end of the head end seat corresponding to the first mounting hole, the imaging module is directly mounted in the first mounting hole through the lens barrel, the imaging module is adjusted by adjusting the relative position of the imaging module and the head end seat, the imaging parameters of the imaging module are adjusted, the head end seat is used to realize the role of the lens seat, and the installation and positioning of the imaging module are completed, and the lens seat is omitted, therefore, the head end seat can reduce the external dimensions to a certain extent, thereby reducing the external dimensions of the endoscope lens end, realizing the miniaturization of the endoscope, and effectively improving the clinical experience of the subject. An endoscope having the above-mentioned endoscope lens end structure also has the above-mentioned beneficial effects.

Description

Technical Field

[0001] The present invention relates to the field of medical instruments, and in particular to an end portion of an endoscope head and an endoscope. Background Art

[0002] The electronic endoscope has an image sensor module, an optical lens, a light source, a mechanical device, etc., and the insertion part can be inserted into the body through a natural orifice, so that detection can be performed in the corresponding body cavity. The outer diameter of the insertion part directly affects the comfort of the subject, and the outer diameter of the insertion part is mainly limited by the size of its head end. The head end of the endoscope is usually provided with an image transmission module, a forceps opening, an illumination channel and an air / water channel. The overall external dimensions are relatively large, and this dimension is mainly limited by the external dimensions of the image transmission component and the forceps opening. Therefore, under the existing structural settings and assembly schemes, the size of the end of the endoscope head is difficult to further reduce. The larger head end increases the difficulty of inserting the insertion part and is easy to cause discomfort to the subject. Therefore, it is necessary to provide a new technical solution to solve the technical problem of the large size of the end of the endoscope head. Summary of the invention

[0003] According to an embodiment of the present invention, an endoscope head portion is provided which can reduce the external dimensions to a certain extent, so that the endoscope head portion is further miniaturized, and an endoscope having the endoscope head portion is provided.

[0004] The technical solution adopted by the present invention to solve the above technical problems is:

[0005] On the one hand, an embodiment of the present invention provides an end of an endoscope lens, including a head end seat, an imaging module and an image sensor module, wherein the imaging module includes a lens barrel and an optical element arranged in the lens barrel, a first mounting hole is arranged on the head end seat, the image sensor module is connected to the rear end of the head end seat corresponding to the first mounting hole, the imaging module is directly mounted in the first mounting hole through the lens barrel, and the imaging parameters of the imaging module are adjusted by adjusting the relative position of the imaging module and the head end seat.

[0006] As an improvement of the above technical solution, it also includes a head end cover, which is connected to the front end of the head end seat, and a viewing window is arranged on the head end cover at a position corresponding to the first mounting hole.

[0007] As a further improvement of the above technical solution, a sealing structure is provided between the inner wall of the viewing window and the lens barrel.

[0008] As a further improvement of the above technical solution, a groove is provided on the head end seat at the front end of the first mounting hole, a gap is formed between the inner wall of the viewing window, the side wall of the groove and the outer wall of the lens barrel, and the gap is filled with sealant.

[0009] As a further improvement of the above technical solution, the side wall of the groove is flush with the inner wall of the viewing window.

[0010] As a further improvement of the above technical solution, the sealing structure is a sealing ring, and the sealing ring can be squeezed between the inner wall of the viewing window and the lens barrel.

[0011] As a further improvement of the above technical solution, a clamp opening is also provided on the head end seat, and the clamp opening is provided on a side opposite to the first mounting hole.

[0012] As a further improvement of the above technical solution, a second mounting hole for the lighting device to pass through is further provided on the head end seat, and the second mounting hole is correspondingly arranged on the side of the thin wall between the first mounting hole and the clamp opening.

[0013] As a further improvement of the above technical solution, the head end seat is also provided with a channel for air or water to pass through, and the channel is arranged on a side opposite to the second mounting hole.

[0014] Another aspect of an embodiment of the present invention provides an endoscope, including an insertion portion and an operating portion, wherein the operating portion is used to operate the insertion portion to perform an action, and the head end of the insertion portion is configured as any of the endoscope head ends described above.

[0015] The above technical solution has at least the following advantages or beneficial effects:

[0016] The end of the endoscope lens includes a head end seat, an imaging module and an image sensor module. The imaging module includes a lens barrel and an optical element arranged in the lens barrel. The head end seat is provided with a first mounting hole. The image sensor module is connected to the rear end of the head end seat corresponding to the first mounting hole. The imaging module is directly mounted in the first mounting hole through the lens barrel. By adjusting the relative position of the imaging module and the head end seat, the imaging parameters of the imaging module are adjusted, and the head end seat is used to realize the role of the lens seat to complete the installation and positioning of the imaging module, eliminating the lens seat. Therefore, the head end seat can reduce the external dimensions to a certain extent, thereby reducing the external dimensions of the end of the endoscope lens, realizing the miniaturization of the endoscope, and effectively improving the clinical experience of the subject. The endoscope with the above-mentioned endoscope lens end structure also has the above-mentioned beneficial effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief description of the drawings required for describing the embodiments:

[0018] Figure 1 A cross-sectional view of an embodiment of an end portion of an endoscope head of the present invention;

[0019] Figure 2The figure is a schematic diagram of the three-dimensional structure of an end portion of an endoscope head according to an embodiment of the present invention. DETAILED DESCRIPTION

[0020] The head end of the endoscope is usually provided with an image transmission module, a clamp port, an illumination channel and an air / water channel. The overall structure has a large size, and its size is mainly limited by the size of the clamp port and the image transmission module. For the clamp port, different types of endoscopes have standard requirements for the size of the clamp port. As for the image transmission module, the image transmission module objective lens is composed of an image sensor module, a lens holder and an imaging module. The imaging module includes a lens barrel and an optical element arranged in the lens barrel. The traditional solution is to achieve the connection and positioning of the image sensor module and the imaging module through the lens holder. When assembling the image transmission module, the relative position between the imaging module and the lens holder is adjusted to achieve the adjustment of the imaging parameters of the image transmission module, such as the adjustment of the depth of field and the field of view angle, so that the image transmission module as a whole forms a separate module, which is arranged in the head end, wherein the size of the image sensor module is fixed, therefore, the size of the lens holder is also fixed. Under the condition of meeting the processing, assembly and sealing requirements, it is difficult to further reduce the size of the end of the endoscope head.

[0021] The end of the endoscope lens provided in the embodiment of the present invention eliminates the lens seat, thereby reducing the external dimensions to a certain extent.

[0022] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not simply refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connecting accessories according to the specific implementation situation. The description of the upper, lower, left, right and other directions involved in the present invention is only relative to the relative position relationship of the various components of the present invention in the drawings. The various technical features in the present invention can be combined interchangeably without conflicting with each other.

[0023] Figure 1 is a cross-sectional view of an embodiment of the end of the endoscope head of the present invention, referring to Figure 1The end of the endoscope head includes a head end seat 1, an imaging module 2 and an image sensing module 3. The imaging module 2 includes a lens barrel 21 and an optical element (not shown) arranged in the lens barrel. The optical element can be a lens or an aspherical lens used in a conventional objective lens. A first mounting hole 11 is arranged on the head end seat 1. The image sensing module 3 is connected to the rear end of the head end seat 1 corresponding to the first mounting hole 11. The imaging module 2 is directly mounted in the first mounting hole 11 through the lens barrel 21. During assembly, the image sensing module 3 is first connected to the rear end of the head end seat 1 corresponding to the first mounting hole 11, the relative positions of the optical elements are preset and fixed in the lens barrel 21, and then the imaging module 2 is placed in the first mounting hole 11. By adjusting the relative position of the imaging module 2 and the head end seat 1, the imaging parameters of the imaging module 2, such as the depth of field, are adjusted. After the adjustment is completed, the field of view angle can be detected and confirmed, and then the imaging module 2 is fixedly connected to the first mounting hole 11 through the lens barrel 21. Compared with the existing head end, the head end seat 1 is used to realize the role of the lens seat to complete the installation and positioning of the imaging module 2, eliminating the lens seat. Therefore, the head end seat 1 can reduce the overall dimensions to a certain extent, thereby reducing the overall dimensions of the end of the endoscope head, realizing the miniaturization of the endoscope, and effectively improving the clinical experience of the subject.

[0024] The end of the endoscope head also includes a head cover 4, which is connected to the front end of the head base 1. A viewing window 41 is provided on the head cover 4 at a position corresponding to the first mounting hole 11, thereby providing a viewing window for the imaging module 2 to observe and image. The head cover 4 can be connected to the head base 1 in a conventional detachable manner, such as threaded connection, clamping, etc., and the fitting surface between the two can be sealed with glue.

[0025] A sealing structure is provided between the inner wall of the viewing window 41 and the lens barrel 21 to prevent liquid from entering the end of the endoscope head through the gap between the viewing window 41 and the lens barrel 21 and affecting the stable operation of the electronic components. The sealing structure may be a sealing ring provided between the viewing window 41 and the lens barrel 21, the sealing ring may be squeezed between the inner wall of the viewing window 41 and the lens barrel 21, or may be a sealant filled between the viewing window 41 and the lens barrel 21, thereby achieving a waterproof seal between the lens barrel and the head end cover.

[0026] A groove 12 is provided at the front end of the first mounting hole 11 on the head end seat 1, and a gap is formed between the inner wall of the viewing window 41, the side wall of the groove 12 and the outer wall of the lens barrel 21. The gap is filled with sealant to achieve sealing between the head end seat 1, the viewing window 41 and the lens barrel 21. The side wall of the groove 12 can be set flush with the inner wall of the viewing window 41 to improve the reliability of the sealing.

[0027] Figure 2 FIG. 1 is a schematic diagram of a three-dimensional structure of an embodiment of the end of the endoscope head of the present invention, and FIG. Figure 1 , 2The head end seat 1 is also provided with a clamp channel opening 13. The external dimensions of the head end seat 1 can be set according to the arrangement of the clamp channel opening 13 and the first mounting hole 11. The clamp channel opening 13 can be set on the side opposite to the first mounting hole 11, so that the size of the head end seat 1 can be set to the minimum. The clamp channel connection tube 5 is provided on the clamp channel opening 13. One end of the clamp channel connection tube 5 is arranged in the clamp channel opening 13, and the other end is used to connect with the clamp channel tube 6 for easy installation. Correspondingly, a first opening 42 is provided on the head end cover 4 corresponding to the clamp channel opening 13 so that the instrument can be extended.

[0028] The head end seat 1 is also provided with a second mounting hole (not shown) for the lighting device to pass through. Correspondingly, a second opening 43 is provided on the head end cover 4 corresponding to the second mounting hole. There is also residual space on both sides of the clamp opening 13 and the first mounting hole 11 on the head end seat 1. The second mounting hole is correspondingly arranged on the side of the thin wall between the first mounting hole 11 and the clamp opening 13, so as to realize the rational use of space.

[0029] The head end seat 1 is also provided with a channel for air or water to pass through (not shown). Correspondingly, a third opening 44 is provided on the head end cover 4 corresponding to the first channel. The channel 15 is provided on the side opposite to the second mounting hole to realize the rational use of space.

[0030] The endoscope head end structure provided by the embodiment of the present invention can reduce the external dimensions of the endoscope head end in terms of structure; in terms of assembly, it can reduce the number of structural parts of the endoscope head end, thereby reducing the number of failed packaging areas that may exist between the structural parts, thereby simplifying the assembly process and improving the sealing performance of the head end; in terms of processing, the removal of the lens seat can leave more processing allowance for the head end seat, and while appropriately reducing the external dimensions, the thin walls between the mounting holes on the head end seat can also be appropriately thickened, which can reduce the processing difficulty and reduce the risk of deformation or edge breakage. At the same time, the increase in the thickness of the thin wall can also improve the reliability of the seal.

[0031] An embodiment of the present invention also provides an endoscope, including an insertion part and an operating part, the operating part is used to operate the insertion part to perform an action, and the head end of the insertion part is set as the end of the endoscope head mentioned above. Based on the above structural setting, the outer dimensions of the endoscope head end can be further reduced, so that the outer diameter of the insertion part can be reduced accordingly, thereby realizing a subtle endoscope solution and greatly improving the comfort of the subject during the test.

[0032] The above are only preferred embodiments of the present invention, but the present invention is not limited to the above embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. An end portion of an endoscope head, characterized in that: It includes a head end seat, an imaging module and an image sensor module. The imaging module includes a lens barrel and an optical element arranged in the lens barrel. The head end seat is provided with a first mounting hole. The image sensor module is connected to the rear end of the head end seat corresponding to the first mounting hole. The imaging module is directly mounted in the first mounting hole through the lens barrel. The imaging parameters of the imaging module are adjusted by adjusting the relative position of the imaging module and the head end seat.

2. The endoscope head portion according to claim 1, characterized in that: It also includes a head end cover, which is connected to the front end of the head end seat, and a viewing window is arranged on the head end cover at a position corresponding to the first mounting hole.

3. The endoscope head portion according to claim 2, characterized in that: A sealing structure is arranged between the inner wall of the viewing window and the lens barrel.

4. The endoscope head portion according to claim 3, characterized in that: A groove is provided on the head end seat at the front end of the first mounting hole, a gap is formed between the inner wall of the viewing window, the side wall of the groove and the outer wall of the lens barrel, and the gap is filled with sealant.

5. The endoscope head portion according to claim 4, characterized in that: The side wall of the groove is flush with the inner wall of the viewing window.

6. The endoscope head portion according to claim 3, characterized in that: The sealing structure is a sealing ring, and the sealing ring can be squeezed between the inner wall of the viewing window and the lens barrel.

7. The endoscope head portion according to any one of claims 1 to 6, characterized in that: The head end seat is also provided with a clamp opening, and the clamp opening is arranged on a side opposite to the first mounting hole.

8. The endoscope head portion according to claim 7, characterized in that: The head end seat is also provided with a second mounting hole for the lighting device to pass through, and the second mounting hole is correspondingly arranged beside the thin wall between the first mounting hole and the clamp opening.

9. The endoscope head portion according to claim 8, characterized in that: The head end seat is also provided with a channel for air or water to pass through, and the channel is arranged on a side opposite to the second mounting hole.

10. An endoscope, characterized in that: The invention comprises an insertion portion and an operation portion, wherein the operation portion is used to operate the insertion portion to perform an operation, and the head end portion of the insertion portion is configured as the end portion of the endoscope head according to any one of claims 1 to 9.

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