Endoscope tip member

Abstract

The invention relates to the technical field of medical endoscopes, and discloses an endoscope tip component which comprises a tip base, a channel end cover, an optical lens set, an image sensor and a flexible circuit board. The channel end cover, the optical lens group, the image sensor and the flexible circuit board are sequentially arranged in the imaging channel from top to bottom, the channel end cover is sealed at a top opening of the imaging channel, and the image sensor is integrated on the flexible circuit board. The optical lens group is integrated in the tip base, a part of the tip base directly becomes an optical lens barrel, the image sensor is directly installed on the rear portion of the optical lens group, and the tip base is only provided with an instrument channel and does not have other hole channels, so that the tip base is good in sealing performance, high in integration level and smaller in size under the same performance or better in improvement performance under the same size.

Description

Technical Field

[0001] The present invention relates to the technical field of medical endoscopes, and in particular to an endoscope component. Background Art

[0002] Endoscope is a widely used medical device that can be directly inserted into the human body for observation and diagnosis and treatment of diseases. As the first part to enter the human body, the tip at the front directly affects the performance of the endoscope and the comfort of the patient.

[0003] The tip of the electronic endoscope includes image sensors, optical lenses, lighting sources, clamp channel tubes and other structures. The larger the space given to the optical lens and image sensor, the clearer the imaging effect of the camera module; and the larger the inner diameter of the clamp channel tube, the stronger its passing capacity, the more instruments it supports, and the greater the suction flow. However, for the tip, the smaller its outer diameter, the wider the scope of application and the better the patient's comfort. The tip (head) of the endoscope (especially the medical endoscope) has many functions to be integrated, but it is limited by size and the integration is not high.

[0004] Prior art, China Utility Model Patent (CN208464031U) discloses a tip end of an electronic endoscope, including a tip cover and a tip base, the bottom end of the tip cover is connected to the top end of the tip base; the tip cover has two through holes arranged in parallel, the first through hole is fixedly provided with a shell, and the second through hole is used as a clamping hole of the tip cover; an optical lens and an image sensor are fixedly provided in the shell; the tip base has two channels, the first channel is used as a through hole of the FPC of the imaging system module; the second channel is composed of a front clamping hole and a rear clamping hole connected to each other, and an angle is formed between the central axis of the front clamping hole and the central axis of the tip base; the front end of the front clamping hole is aligned with the clamping hole of the tip cover. The utility model arranges the front clamping holes obliquely, just avoiding the influence of the PCB and the shell of the imaging system module, which can not only ensure the maximization of the clamping holes but also reduce the size of the rear end, thereby minimizing the size of the bending part and the tip end of the endoscope. However, in this patent, the LED light source and optical lens are still independent components, which are assembled through the channel on the tip structure. The optical lens barrel occupies the size and leaves an assembly gap between the tip channel, which makes it impossible to make the optical lens larger and optimize the performance. Multiple shells are assembled, which wastes a lot of structural space and makes sealing more difficult. Summary of the invention

[0005] The object of the present invention is to provide an endoscope tip component, which integrates an optical lens group into the interior of a tip base, allows a part of the tip base to directly become an optical lens barrel, and an image sensor is directly installed at the rear of the optical lens group, thereby greatly reducing the size of the entire tip component and improving the degree of integration. In addition, there is no need for assembly between shells, no gaps are generated, space waste is avoided, and the difficulty of sealing is reduced.

[0006] In order to achieve the above-mentioned objectives, the present invention provides an endoscope tip component, including a tip base, a channel end cover, an optical lens group, an image sensor and a flexible circuit board, wherein the tip base is provided with an imaging channel and an instrument channel, the channel end cover, the optical lens group, the image sensor and the flexible circuit board are sequentially arranged in the imaging channel from top to bottom, the channel end cover is sealed at the top opening of the imaging channel, and the image sensor is integrated on the flexible circuit board.

[0007] Preferably, the endoscope tip component further includes an LED light source, and the LED light source is disposed on the tip base.

[0008] Preferably, a receiving groove for mounting the LED light source is provided on the tip base.

[0009] Preferably, a three-dimensional circuit is arranged in the receiving groove, the LED light source is packaged on the three-dimensional circuit, and connecting wires of the three-dimensional circuit are led out from the flexible circuit board.

[0010] Preferably, the three-dimensional circuit is printed in the receiving groove by hybrid 3D printing technology.

[0011] Preferably, the LED light source is packaged on the three-dimensional circuit through SMT.

[0012] Preferably, the LED light source and the optical lens group are separated from each other.

[0013] Preferably, the height of the LED light source is lower than the height of the highest end lens of the optical lens group.

[0014] Preferably, a mounting groove for mounting the flexible circuit board is provided in the imaging channel.

[0015] Preferably, the channel end cover and the tip base are fixedly connected by bonding, packaging or ultrasonic welding.

[0016] The beneficial effects of the present invention are: the optical lens group is integrated into the interior of the tip base, so that a part of the tip base directly becomes the optical lens barrel, the image sensor is directly installed at the rear of the optical lens group, the tip base has only an instrument channel and no other channels, the sealing is good, the integration is high, the size is smaller under the same performance, or the performance is improved more under the same size.

[0017] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 A schematic structural diagram of an endoscope tip member according to an embodiment of the present invention is shown; Figure 2 A top view of an endoscope tip member according to an embodiment of the present invention is shown; Figure 3 The present invention shows Figure 2 Sectional view of the middle AA plane; Figure 4 The present invention shows Figure 2 Sectional view along the middle BB plane. DETAILED DESCRIPTION

[0019] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0020] Please refer to Figure 1-Figure 4 The present embodiment discloses an end component of an endoscope, including an end base 1, a channel end cover 2, an optical lens group 3, an image sensor 4 and a flexible circuit board 5. An imaging channel 11 and an instrument channel 12 are arranged on the end base 1. The channel end cover 2, the optical lens group 3, the image sensor 4 and the flexible circuit board 5 are arranged in the imaging channel 11 from top to bottom. The channel end cover 2 is sealed at the top opening of the imaging channel 11, and the image sensor 4 is integrated on the flexible circuit board 5.

[0021] In the present embodiment, the optical lens group 3 and the image sensor 4 are directly packaged in the imaging channel 11 and sealed by the channel end cover 2. There is no need to set up a separate optical lens barrel. On the one hand, the size of the entire front component is reduced. On the other hand, there is no sealing gap between the shells, which improves the sealing effect, thereby reducing the difficulty and error of assembly and improving the overall equipment accuracy.

[0022] Specifically, the channel end cover 2 is made of a transparent material, and the tip base 1 is made of an opaque material to ensure that the image sensor 4 obtains a clear image. The optical lens group 3 and the image sensor 4 are bonded or packaged with the tip base 1 to ensure their sealing. The channel end cover 2 and the tip base 1 are bonded, packaged or ultrasonically welded to ensure their sealing.

[0023] In this embodiment, please refer to Figure 4 The end component of the endoscope further includes an LED light source 6, which is disposed on the end base 1. The LED light source 6 provides illumination for the image sensor 4 to collect images. Specifically, a receiving groove 13 for mounting the LED light source 6 is disposed on the end base 1, and a three-dimensional circuit is disposed in the receiving groove 13. The LED light source 6 is packaged on the three-dimensional circuit, and the connecting wire 61 of the three-dimensional circuit is led out by the flexible circuit board 5, which can save the manual welding step and further improve the production efficiency. The three-dimensional circuit is printed in the receiving groove 13 by hybrid 3D printing technology. The LED light source 6 is packaged on the three-dimensional circuit by SMT.

[0024] In the specific production, firstly, the three-dimensional circuit required by the LED light source 6 is directly produced on the front base 1 in the receiving groove 13, and the LED light source 6 can be directly packaged on the three-dimensional circuit through SMT patch. In this way, there is no need to produce a dedicated printed circuit board, and the placement of the LED light source 6 is more accurate.

[0025] In this embodiment, two receiving grooves 13 are provided, and the two receiving grooves 13 are symmetrically arranged on both sides of the imaging channel 11. LED light sources 6 are arranged inside the two receiving grooves 13, so as to provide better lighting.

[0026] In this embodiment, the LED light source 6 is separated from the optical lens group 3 (that is, a partition is provided between the accommodating groove 13 and the imaging channel 11, and the two are independent of each other). The height of the LED light source 6 is lower than the height of the highest-end lens of the optical lens group 3, so as to avoid the lamp tube of the LED light source 6 from entering the lens to cause stray light and affect the imaging effect.

[0027] Preferably, a mounting groove 14 for mounting a flexible circuit board 5 is provided in the imaging channel 11, the flexible circuit board 5 is assembled in the mounting groove 14, the image sensor 4 is welded on the flexible circuit board 5, and is tightly assembled with the rear end of the imaging channel 11 to meet the overall optical path design of the endoscope.

[0028] To summarize, the optical lens group 3 is integrated into the interior of the tip base 1, so that a part of the tip base 1 directly becomes the optical lens barrel, the image sensor 4 is directly installed at the rear of the optical lens group 3, the tip base 1 only has an instrument channel 12, and no other channels, so it has good sealing, high integration, smaller size at the same performance, or greater performance improvement at the same size.

[0029] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention. It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0030] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. An endoscope tip component, characterized in that: It includes a tip base, a channel end cover, an optical lens group, an image sensor and a flexible circuit board. The tip base is provided with an imaging channel and an instrument channel. The channel end cover, the optical lens group, the image sensor and the flexible circuit board are sequentially arranged in the imaging channel from top to bottom. The channel end cover is sealed at the top opening of the imaging channel. The image sensor is integrated on the flexible circuit board.

2. The endoscope tip member according to claim 1, characterized in that: The endoscope front end component also includes an LED light source, and the LED light source is arranged on the front end base.

3. The endoscope tip member according to claim 2, characterized in that: The front end base is provided with a receiving groove for installing the LED light source.

4. The endoscope tip member according to claim 3, characterized in that: A three-dimensional circuit is arranged in the receiving groove, the LED light source is packaged on the three-dimensional circuit, and the connecting wires of the three-dimensional circuit are led out from the flexible circuit board.

5. The endoscope tip member according to claim 4, characterized in that: The three-dimensional circuit is printed in the receiving groove by hybrid 3D printing technology.

6. The endoscope tip member according to claim 5, characterized in that: The LED light source is packaged on the three-dimensional circuit through SMT.

7. The endoscope tip member according to claim 2, characterized in that: The LED light source and the optical lens group are separated from each other.

8. The endoscope tip member according to claim 7, characterized in that: The height of the LED light source is lower than the height of the highest end lens of the optical lens group.

9. The endoscope tip member according to claim 1, characterized in that: A mounting groove for mounting the flexible circuit board is arranged in the imaging channel.

10. The endoscope tip member according to claim 1, characterized in that: The channel end cover and the tip base are fixedly connected by bonding, packaging or ultrasonic welding.

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