Head end for endoscope
By designing light guide columns and electronic components at the end of the endoscope, the problems of low lighting efficiency and uneven lighting are solved, and more efficient and uniform lighting effects are achieved, and the heat generation is reduced.
Patent Information
- Application Number
- CN202322760291.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-10-13
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2033-10-13
AI Technical Summary
The existing endoscope end lighting efficiency is low and the lighting is uneven, which affects the clarity and safety of doctors' observations in the body.
A head end for an endoscope is designed, including a head end seat, an electronic component and a light guide column. The electronic components include a circuit board, a light source, an imaging lens and a cable. The light guide column is set as a cylinder structure with an inlet surface area smaller than the outlet surface area, and is used for total reflection and conduction irradiation.
The lighting efficiency of the end lens end is improved, the brightness of the lighting spots is more uniform, and the heat generation at the head end is reduced under the same illumination, reducing the potential harm to the human body.
Smart Images
Figure CN222657024U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical equipment, and more specifically to a head end for an endoscope. Background Art
[0002] An endoscope is a medical device used to examine and observe internal organs and tissues of the body. The end of the endoscope integrates a small lens and light source. The doctor inserts the endoscope head through an opening on the body surface (such as the mouth, nose, rectum, etc.) into the patient's body. The lens is used to capture images of internal organs and tissues. The light emitted by the light source is reflected by the tissue and transmitted to the lens, allowing the doctor to see clear images of the patient's body and ensure safe access to the corresponding organs or cavities. However, the lighting efficiency of the existing endoscope head is not high and the lighting is uneven.
[0003] Therefore, how to solve the problem of low illumination efficiency and uneven illumination at the end of the endoscope head is an urgent problem to be solved by those skilled in the art. Utility Model Content
[0004] In view of this, the purpose of the utility model is to provide an endoscope tip, which can improve the lighting efficiency of the tip and make the brightness of the light spot illuminated by the endoscope tip more uniform, and also has the advantage of less heat generation at the head end under the same illumination.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] An endoscope tip, comprising:
[0007] A head end seat, wherein a mounting hole is provided in the head end seat, and the mounting hole has a front end and a rear end along its axial direction;
[0008] An electronic component is arranged in the mounting hole, the electronic component includes a circuit board, a light source connected to the circuit board, a camera lens and a cable, the circuit board and the cable are arranged at the rear end of the mounting hole, and the light source and the camera lens are arranged at the front end of the mounting hole;
[0009] The light guide column is arranged in the mounting hole and is arranged corresponding to the light source. The light guide column is set as a column structure with a light incident surface area smaller than a light emitting surface area, and the light emitting surface of the light guide column is flush with the end surface of the head end seat.
[0010] Preferably, the front end surface of the camera lens protrudes from the front end surface of the head end seat.
[0011] Preferably, the camera lens is welded to the circuit board; and / or the circuit board is welded to the light source; and / or the circuit board is welded to the cable.
[0012] Preferably, the shape of the light incident surface of the light guide column is the same as the cross-sectional shape of the light source along the light direction.
[0013] Preferably, the size of the light incident surface of the light guide column is consistent with the cross-sectional size of the light source along the light direction.
[0014] Preferably, a plurality of light sources are provided, and a plurality of light guide columns are provided in a one-to-one correspondence with the light sources, and the plurality of light guide columns are arranged in a circumferential direction of the camera lens.
[0015] Preferably, a first small hole for connecting to a camera lens is provided at the front end of the head end seat.
[0016] Preferably, a second small hole connected to the light guide column is provided at the front end of the head end seat.
[0017] Preferably, a third small hole for passing instruments is provided at the front end of the head end seat.
[0018] Preferably, the camera lens is bonded to the first small hole, and / or the light guide column is bonded to the second small hole.
[0019] Preferably, the side surface of the light guide column has a taper of 0.5°-2°.
[0020] The utility model provides an endoscope head end, comprising a head end seat, a mounting hole being provided in the head end seat, the mounting hole having a front end and a rear end along its axial direction; an electronic component being arranged in the mounting hole, the electronic component comprising a circuit board, a light source connected to the circuit board, a camera lens and a cable, the circuit board and the cable being arranged at the rear end of the mounting hole, and the light source and the camera lens being arranged at the front end of the mounting hole; a light guide column being arranged in the mounting hole, corresponding to the light source, the light guide column being arranged in a prism shape with a light incident surface area being smaller than a light emitting surface area, and the light emitting surface of the light guide column being flush with the end face of the head end seat.
[0021] In the operation of the above-mentioned endoscope head, when the endoscope starts working, the cable provides a DC power supply which is converted into light through the light source connected to the circuit board. The light is transmitted through the total reflection of the light guide column and irradiated into the human tissue. The reflected light of the tissue is received by the camera lens and converted into an electrical signal, which is transmitted and imaged through the cable. The light guide column is provided to improve the lighting efficiency of the endoscope head, so that the heat emitted by the head end is smaller under the same illumination. The light guide column is set as a columnar structure with a light incident surface area smaller than a light emitting surface area, so that the brightness of the light spot illuminated by the endoscope head end is more uniform. The light emitting surface of the light guide column is set to be flush with the end face of the head end seat, so as to reduce the possibility of the head end of the light guide column harming the human body. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.
[0023] Figure 1 This is a schematic diagram of the structure of the endoscope head provided by the utility model;
[0024] Figure 2 An exploded view of the endoscope tip provided by the utility model;
[0025] Figure 3 A cross-sectional view of the endoscope tip provided by the utility model;
[0026] Figure 4 The figure is a schematic structural diagram of the light guide column provided by the utility model.
[0027] Figure 1-Figure 4 , the reference numerals include:
[0028] 1-head end seat, 11-first small hole, 12-second small hole, 13-third small hole;
[0029] 2-electronic components, 21-circuit board, 22-light source, 23-camera lens, 24-cable;
[0030] 3- Light guide column. DETAILED DESCRIPTION
[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0032] It should be noted that the directional terms such as "front end, back end" described below are defined based on the drawings in the specification.
[0033] The core of the utility model is to provide a head end for an endoscope, which can improve the lighting efficiency of the head end and make the brightness of the light spot illuminated by the head end of the endoscope more uniform, and also has the advantage of less heat generation at the head end under the same illumination.
[0034] Please refer to Figure 1 and Figure 2A head end for an endoscope includes a head end seat 1, a mounting hole is provided in the head end seat 1, and the mounting hole has a front end and a rear end along its axial direction; an electronic component 2 is arranged in the mounting hole, and the electronic component 2 includes a circuit board 21, a light source 22 connected to the circuit board 21, a camera lens 23 and a cable 24, the circuit board 21 and the cable 24 are arranged at the rear end of the mounting hole, and the light source 22 and the camera lens 23 are arranged at the front end of the mounting hole; a light guide column 3 is arranged in the mounting hole, corresponding to the light source 22, the light guide column 3 is set as a column structure with a light incident surface area smaller than a light emitting surface area, and the light emitting surface of the light guide column 3 is flush with the end surface of the head end seat 1.
[0035] Specifically, in the operation of the head end of the above-mentioned endoscope, when the endoscope starts working, the cable 24 provides a DC power supply which is converted into light through the light source 22 connected to the circuit board 21. The light is transmitted through the total reflection of the light guide column 3 and irradiated into the human tissue. The reflected light of the tissue is received by the camera lens 23 and converted into an electrical signal, which is transmitted and imaged through the cable 24. The light guide column 3 is provided to improve the lighting efficiency of the head end of the endoscope, so that the heat emitted by the head end is smaller under the same illumination. The light guide column 3 is configured as a columnar structure with a light incident surface area smaller than a light emitting surface area, so that the brightness of the light spot illuminated by the head end of the endoscope is more uniform. The light emitting surface of the light guide column 3 is configured to be flush with the end face of the head end seat 1, so as to reduce the possibility of the head end of the light guide column 3 harming the human body.
[0036] The endoscope tip configured in the above manner can improve the lighting efficiency of the tip, make the brightness of the light spot illuminated by the endoscope tip more uniform, and also has the advantage of less heat generation at the head end under the same illumination.
[0037] Please refer to Figure 3 The front end surface of the camera lens 23 protrudes from the front end surface of the head end seat 1.
[0038] It is understandable that when the endoscope is working, the front end surface of the camera lens 23 is the photosensitive surface at the front end of the head end seat 1. The front end surface of the camera lens 23 is set to protrude from the front end surface of the head end seat 1 to facilitate clearer and more accurate acquisition of image information.
[0039] Further, the camera lens 23 is welded to the circuit board 21 ; and / or, the circuit board 21 is welded to the light source 22 ; and / or, the circuit board 21 is welded to the cable 24 .
[0040] It should be noted that the camera lens 23 and the light source 22 are directly welded to the circuit board 21, and the cable 24 is welded on the back of the circuit board 21. The welded components are easy to assemble and can be quickly and accurately installed on the head end seat 1, with higher installation accuracy and more guaranteed installation quality.
[0041] In the above embodiment, the shape of the light incident surface of the light guide column 3 is the same as the cross-sectional shape of the light source 22 along the light direction.
[0042] It is understandable that in order to transmit as much light as possible from the light source 22 to the central area of the field of view of the camera lens 23, the shape of the light incident surface of the light guide column 3 is set to have the same cross-sectional shape as that of the light source 22 along the light direction.
[0043] Among them, the light guide column 3 is a refractive optical lens, and the light emitting surface of the light guide column 3 is flush with the front end surface of the head end seat 1 to avoid damage to human organs or tissues.
[0044] In the above situation, the size of the light incident surface of the light guide column 3 is consistent with the cross-sectional size of the light source 22 along the light direction.
[0045] It should be noted that the shape of the cross section of the light guide column 3 matches the shape of the cross section of the light source 22, so that the light incident surface of the light guide column 3 can completely cover the light emitting surface of the light source 22, so that the light emitted by the light source 22 can completely enter the light guide column 3, avoiding light leakage.
[0046] The light source 22 may be an LED lamp core, and the LED lamp core is preferably arranged in a rectangular parallelepiped.
[0047] In the above embodiment, a plurality of light sources 22 are provided, and a plurality of light guide columns 3 are provided in a one-to-one correspondence with the light sources 22 . The plurality of light guide columns 3 are provided in the circumference of the camera lens 23 .
[0048] It can be understood that there are multiple light guides 3 corresponding to the light sources 22, and the multiple light guides 3 are arranged around the camera lens 23 and symmetrically arranged, so that the light around the camera lens 23 is more uniform, thereby collecting better image information.
[0049] The number of light sources 22 is not specifically limited and is set according to the size of the head end seat 1. In this embodiment, two light sources 22 are provided, and the two light sources 22 are symmetrically arranged on both sides of the camera lens 23, and the two light guides 3 are also symmetrically arranged on both sides of the camera lens 23, so that the light within the field of view of the camera lens 23 is arranged uniformly, so that the image collected by the endoscope head end is clearer and more accurate.
[0050] In the above embodiment, the front end of the head end seat 1 is provided with a first small hole 11 connected to the camera lens 23.
[0051] It should be noted that a first small hole 11 is provided at the front end of the head end seat 1, which can cover the camera lens 23, thereby ensuring that the camera lens 23 can be protected by the head end seat 1 and image information can be better obtained.
[0052] Furthermore, a second small hole 12 connected to the light guide column 3 is provided at the front end of the head end seat 1 .
[0053] It can be understood that the brightness of the light within the field of view can be enhanced by the light source 22, and the light guide column 3 can be set to transmit the light emitted by the light source 22 to the central area of the field of view of the camera lens 23, so as to effectively fill in the central area of the field of view of the camera lens 23, so that the brightness of the central area of the field of view of the camera lens 23 is more uniform, and the lighting efficiency is improved to obtain brighter and clearer image information.
[0054] On the basis of the above-mentioned embodiment, a third small hole 13 for passing instruments is provided at the front end of the head end seat 1.
[0055] It should be noted that the third small hole 13 is used to assist the endoscope head end in acquiring human tissue information.
[0056] As a preferred implementation, the camera lens 23 is bonded to the first small hole 11 , and / or the light guide column 3 is bonded to the second small hole 12 .
[0057] It can be understood that the camera lens 23 is installed in the first small hole 11 of the head end seat 1, and the camera lens 23 and the first small hole 11 are bonded with optical glue. The light guide column 3 is installed in the second small hole 12 of the head end seat 1, and the light guide column 3 and the second small hole 12 are bonded with optical glue. This effectively reduces the welding process and makes assembly more convenient. The components are reliably fixed, which can effectively ensure the quality of the endoscope head end.
[0058] Please refer to Figure 4 The side surface of the light guide column 3 has a taper of 0.5°-2°.
[0059] It should be noted that the side of the light guide column 3 is set at an angle of 0.5°-2°, which can increase the light output surface and thus improve the illumination uniformity of the endoscope head end.
[0060] In summary, the endoscope head end provided by the utility model, in the operation of the above-mentioned endoscope head end, when the endoscope starts to work, the cable 24 provides a DC power supply which is converted into light through the light source 22 connected to the circuit board 21, and the light is transmitted through the total reflection of the light guide column 3 to irradiate the human tissue, and the reflected light of the tissue is received by the camera lens 23 and converted into an electrical signal, which is transmitted and imaged through the cable 24; the light guide column 3 is provided to improve the lighting efficiency of the endoscope head end, so that the heat emitted by the head end is smaller under the same illumination; the light guide column 3 is set as a columnar structure with a light incident surface area smaller than a light emitting surface area, so that the brightness of the light spot illuminated by the endoscope head end is more uniform; the light emitting surface of the light guide column 3 is set to be flush with the end face of the head end seat 1, so as to reduce the possibility of the head end of the light guide column 3 hurting the human body.
[0061] In addition to the endoscope tip disclosed in the above-mentioned embodiments, the present invention also provides a disposable electronic bronchoscope including the above-mentioned endoscope tip. For the structures of other parts of the electronic bronchoscope, please refer to the prior art and will not be described in detail herein.
[0062] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.
[0063] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other. The endoscope head provided by the utility model is introduced in detail above. This article uses specific examples to illustrate the principles and implementation methods of the utility model. The description of the above embodiments is only used to help understand the method of the utility model and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.
Claims
1. An endoscope tip, characterized in that: include: A head end seat (1), wherein a mounting hole is provided in the head end seat (1), and the mounting hole has a front end and a rear end along its axial direction; An electronic component (2) is arranged in the mounting hole, the electronic component (2) comprising a circuit board (21), a light source (22) connected to the circuit board (21), a camera lens (23) and a cable (24), the circuit board (21) and the cable (24) being arranged at the rear end of the mounting hole, and the light source (22) and the camera lens (23) being arranged at the front end of the mounting hole; A light guide column (3) is arranged in the mounting hole and corresponds to the light source (22). The light guide column (3) is a column structure with a light incident surface area smaller than a light emitting surface area, and the light emitting surface of the light guide column (3) is flush with the end surface of the head end seat (1).
2. The endoscope tip according to claim 1, characterized in that: The front end surface of the camera lens (23) protrudes from the front end surface of the head end seat (1).
3. The endoscope tip according to claim 2, characterized in that: The camera lens (23) is welded to the circuit board (21); and / or the circuit board (21) is welded to the light source (22); and / or the circuit board (21) is welded to the cable (24).
4. The endoscope tip according to claim 1, characterized in that: The shape of the light incident surface of the light guide column (3) is the same as the cross-sectional shape of the light source (22) along the light direction.
5. The endoscope tip according to claim 4, characterized in that: The size of the light incident surface of the light guide column (3) is consistent with the cross-sectional size of the light source (22) along the light direction.
6. The endoscope tip according to claim 5, characterized in that: A plurality of the light sources (22) are provided, and a plurality of the light guide columns (3) are provided in a one-to-one correspondence with the light sources (22). The plurality of light guide columns (3) are arranged in the circumference of the camera lens (23).
7. The endoscope tip according to claim 1, characterized in that: The front end of the head end seat (1) is provided with a first small hole (11) connected to the camera lens (23).
8. The endoscope tip according to claim 7, characterized in that: The front end of the head end seat (1) is provided with a second small hole (12) connected to the light guide column (3).
9. The endoscope tip according to any one of claims 7 or 8, characterized in that: The front end of the head end seat (1) is provided with a third small hole (13) for passing instruments.
10. The endoscope tip according to claim 8, characterized in that: The camera lens (23) is bonded to the first small hole (11), and / or the light guide column (3) is bonded to the second small hole (12).
11. The endoscope tip according to claim 10, characterized in that: The side surface of the light guide column (3) has a taper of 0.5°-2°.