Insertion part of transnasal endoscope and transnasal endoscope

Abstract

The invention discloses an insertion part of a transnasal endoscope and the transnasal endoscope, and relates to the technical field of medical instruments.The insertion part of the transnasal endoscope comprises a head end part, a bent part and an insertion tube assembly, and the end face of the far end of the head end part is provided with a steam nozzle, an image transmission objective lens window, an illumination window, an auxiliary water supply outlet and an instrument channel outlet; an image transmission board card is arranged in the head end part, an electronic wire harness, a water vapor pipeline, a light guide assembly, an instrument channel pipeline and an auxiliary water supply pipeline are arranged in the bending part and the insertion pipe assembly in a penetrating manner, and the diameters of the electronic wire harness and the instrument channel pipeline are larger than those of the water vapor pipeline, the light guide assembly and the auxiliary water supply pipeline; the distance between the connecting line of the center of the instrument channel pipeline and the center of the electronic wire harness and the center of the head end part, the bending part or the insertion pipe assembly is 0-1 mm, and the steam pipeline and the auxiliary water supply pipeline are located on the two sides of the connecting line of the center of the instrument channel pipeline and the center of the electronic wire harness respectively. The nasal endoscope has the auxiliary water supply function, and water supply is stable.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to an insertion part of a nasal endoscope and a nasal endoscope. Background Art

[0002] The nasal gastroscope is suitable for elderly and frail patients, patients with poor cardiopulmonary function, patients with pharyngeal / esophageal stenosis, and children. Its ultra-thin endoscope body (with a diameter less than 6 mm) significantly reduces the pharyngeal reflex and cardiovascular stimulation, and has the advantages of high diagnostic rate and low complication rate, improving the safety of examination and the tolerance of patients.

[0003] Currently, digestive endoscopes used for diagnosis and treatment usually need to have an auxiliary water supply function. The external water supply device of the endoscope is connected, and then the pumped water is sprayed out from the auxiliary water supply port at the head end through the auxiliary water supply pipeline inside the endoscope, sending water into the patient's body, lumen, body cavity or internal cavity of the body, for flushing viscous bubbles, blood, dirt and other substances that affect the field of view in the patient's digestive tract, which can improve the field of view clarity of the gastroscope and colonoscope, reduce the misdiagnosis rate, and at the same time facilitate the operator to quickly find the bleeding point during the endoscopic surgery, so as to reduce intraoperative bleeding. Therefore, the auxiliary water supply function is of great significance clinically.

[0004] However, for the nasal gastroscope, limited by the size, the existing products on the market do not have the auxiliary water supply function. Summary of the Invention

[0005] The purpose of the present invention is to provide an insertion part of a nasal endoscope and a nasal endoscope to solve the problems existing in the above-mentioned prior art, so that the nasal endoscope has an auxiliary water supply function and the water supply is stable.

[0006] To achieve the above purpose, the present invention provides the following solutions: The present invention provides an insertion part of a nasal endoscope, comprising: a head end part, a bending part and an insertion tube assembly, which are connected in sequence; on the end face at the distal end of the head end part, a water and gas nozzle, an image transmission objective window, an illumination window, an auxiliary water supply outlet and an instrument channel outlet are constructed. An image transmission board card is arranged inside the head end part. An electronic wire harness, a water and gas pipeline, a light guiding component, an instrument channel pipeline and an auxiliary water supply pipeline are arranged inside the bending part and the insertion tube assembly. The electronic wire harness extends into the head end part and is connected to the image transmission board card. The water and gas pipeline extends into the head end part and is communicated with the water and gas nozzle. The light guiding component extends into the head end part and is aligned with the illumination window. The instrument channel pipeline extends into the head end part and is communicated with the instrument channel outlet. The auxiliary water supply pipeline extends into the head end part and is communicated with the auxiliary water supply outlet. The head end part, the bending part and the insertion tube are all cylindrical structures. The diameters of the electronic wire harness and the instrument channel pipeline are larger than those of the water and gas pipeline, the light guiding component and the auxiliary water supply pipeline. The distance between the center line connecting the centers of the instrument channel pipeline and the electronic wire harness and the center of the head end part, the bending part or the insertion tube assembly is 0 to 1 mm. The water and gas pipeline and the auxiliary water supply pipeline are respectively located on both sides of the center line connecting the centers of the instrument channel pipeline and the electronic wire harness.

[0007] In some embodiments, there are two light guiding components and two illumination windows. The two light guiding components are respectively arranged on both sides of the center line connecting the centers of the instrument channel pipeline and the electronic wire harness.

[0008] In some embodiments, the distance between the electronic wire harness and the instrument channel pipeline is less than 2 mm.

[0009] In some embodiments, an arc-shaped avoidance groove is arranged on the side of the image transmission board card close to the instrument channel pipeline.

[0010] In some embodiments, a steel wire traction channel is arranged inside the wall surface of the bending part, and a steel wire is arranged inside the steel wire traction channel.

[0011] In some embodiments, there are four steel wire traction channels.

[0012] In some embodiments, the diameter of the auxiliary water supply pipeline is not less than 0.5 mm, and the diameter of the electronic wire harness is not more than 1.4 mm.

[0013] In some embodiments, the width of the minimum gap between the instrument channel pipeline and the electronic wire harness is less than the diameters of the water and gas pipeline, the light guiding component and the auxiliary water supply pipeline.

[0014] In some embodiments, the electronic wire harness is a CMOS wire harness.

[0015] The present invention also provides a nasal endoscope, comprising: an operation part, a connection part, and an insertion part of the nasal endoscope as described above, and the insertion part, the operation part, and the connection part are connected in sequence.

[0016] The present invention has achieved the following technical effects compared with the prior art: The present invention distributes the relatively rigid electronic wire harness and the instrument channel pipeline diagonally, realizing the spatial separation layout of the traction cavity, and ensuring the stability of the auxiliary water supply pipeline for water supply in a narrow space during the bending process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 It is a schematic structural diagram of the nasal endoscope provided in Embodiment II of the present invention; Figure 2 For Figure 1 the schematic structural diagram of the insertion part in; Figure 3 In (a) is a schematic diagram of the distal end face of the head end part; (b) is a sectional view of the head end part; Figure 4 It is a sectional view of the bending part; In the figure: 101, insertion part; 102, operation part; 103, connection part; 10, head end part; 20, bending part; 30, insertion tube assembly; 1, image transmission objective window; 2, water and gas nozzle; 3, lighting window; 5, instrument channel outlet; 6, auxiliary water supply outlet; 7, wire rope traction channel; 1-1, image transmission board; 2-1, water and gas pipeline; 3-1, light guide assembly; 5-1, instrument channel pipeline; 6-1, auxiliary water supply pipeline; 1-2, electronic wire harness. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] The purpose of the present invention is to provide an insertion part of a nasal endoscope and a nasal endoscope to solve the problems existing in the prior art. Through the precise structure design of the head end part and the wire threading design of the insertion part, the present invention realizes a transnasal gastroscope solution with an integrated auxiliary water supply function at an extremely fine scale.

[0021] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] The inventor found that in related solutions, there is a technical solution to integrate the auxiliary water supply component onto the nasal endoscope by increasing the diameter of the insertion part. However, this will increase the surgical difficulty. There are also some solutions that directly integrate the auxiliary water supply component into a nasal endoscope with a diameter less than 6 mm. However, in actual use, when the insertion part is bent, the internal pipelines will be squeezed against each other, resulting in unstable water supply, failing to achieve the actual water supply effect, and easily affecting the operation of other components, such as the water and gas delivery components. The water and gas nozzles and water pipelines in the following embodiments constitute the water and gas delivery components. Since the nasal endoscope enters the upper digestive tract through the patient's nasal cavity, the size of the insertion part is limited (diameter less than 6 mm), so the structural design of the insertion part section becomes a bottleneck. Therefore, this application focuses on the related design of the insertion part for description.

[0023] To solve the above problems, the present invention provides the following embodiments: The following combines Figures 1 to 4 , to describe the embodiments of the present invention.

[0024] Embodiment 1 The present invention provides an insertion portion 101 of a nasal endoscope, comprising: a head end portion 10, a bending portion 20, and an insertion tube assembly 30, which are connected in sequence; on the end face of the distal end of the head end portion 10, there are constructed a water and gas nozzle 2, an image transmission objective window 1, an illumination window 3, an auxiliary water supply outlet 6, and an instrument channel outlet 5. Inside the head end portion 10, there is provided an image transmission board card 1-1. Inside the bending portion 20 and the insertion tube assembly 30, there are threaded an electronic wire harness 1-2, a water and gas pipeline 2-1, a light guiding assembly 3-1, an instrument channel pipeline 5-1, and an auxiliary water supply pipeline 6-1. The electronic wire harness 1-2 extends into the head end portion 10 and is connected to the image transmission board card 1-1. The water and gas pipeline 2-1 extends into the head end portion 10 and is communicated with the water and gas nozzle 2. The light guiding assembly 3-1 extends into the head end portion 10 and is aligned with the illumination window 3. The instrument channel pipeline 5-1 extends into the head end portion 10 and is communicated with the instrument channel outlet 5. The auxiliary water supply pipeline 6-1 extends into the head end portion 10 and is communicated with the auxiliary water supply outlet 6. The head end portion 10, the bending portion 20, and the insertion tube are all cylindrical structures. The diameters of the electronic wire harness 1-2 and the instrument channel pipeline 5-1 are larger than the diameters of the water and gas pipeline 2-1, the light guiding assembly 3-1, and the auxiliary water supply pipeline 6-1. The distance between the center line connecting the centers of the instrument channel pipeline 5-1 and the electronic wire harness 1-2 and the center of the head end portion 10, the bending portion 20, or the insertion tube assembly 30 is 0 to 1 mm, that is, the center line connecting the centers of the instrument channel pipeline 5-1 and the electronic wire harness 1-2 passes through the center of the head end portion 10, the bending portion 20, or the insertion tube assembly 30, or there is a small distance between the center line connecting the centers of the instrument channel pipeline 5-1 and the electronic wire harness 1-2 and the center of the head end portion 10, the bending portion 20, or the insertion tube assembly 30. The water and gas pipeline 2-1 and the auxiliary water supply pipeline 6-1 are respectively located on both sides of the center line connecting the centers of the instrument channel pipeline 5-1 and the electronic wire harness 1-2.

[0025] The water and gas nozzle 2 in the present invention has two functions. One is to flush the image transmission objective window 1, and the other is to supply gas to the cavity to support the cavity for convenient observation. The image transmission board card 1-1 is used to obtain an external image through the image transmission objective window 1 and transmit it to a device outside the body, such as a computer, through the electronic wire harness 1-2. The instrument channel outlet 5 is used for the entry and exit of surgical instruments, etc. The illumination window 3 is used to achieve illumination inside the cavity. The auxiliary water supply pipeline 6-1 is used to convey water towards the auxiliary water supply outlet 6. By flushing viscous bubbles, blood, dirt, and other substances that affect the field of view in the patient's digestive tract, it can improve the field of view clarity of the gastroscope, reduce the misdiagnosis rate, and at the same time facilitate the surgeon to quickly find the bleeding point during the endoscopic surgery process, so as to reduce intraoperative bleeding.

[0026] In the embodiment of the present invention, the relatively rigid electronic wire harness 1-2 and the instrument channel pipeline 5-1 are distributed diagonally, realizing a spatial separation layout for traction of the cavity, and ensuring the stability of water supply by the auxiliary water supply pipeline 6-1 in a narrow space during the bending process.

[0027] In some embodiments, there are two light guide assemblies 3-1 and two lighting windows 3. The two light guide assemblies 3-1 are respectively arranged on both sides of the connection line of the centers of the instrument channel pipeline 5-1 and the electronic wire harness 1-2.

[0028] The light guide assembly 3-1 in the embodiment of the present invention is an optical fiber. The two light guide assemblies 3-1 are symmetrically distributed, and the two lighting windows 3 are symmetrically distributed. This embodiment ensures the lighting uniformity while realizing the reasonable distribution of space.

[0029] In some embodiments, the distance between the electronic wire harness 1-2 and the instrument channel pipeline 5-1 is less than 2 mm.

[0030] In some embodiments, an arc-shaped avoidance groove is arranged on the side of the image transfer board 1-1 close to the instrument channel pipeline 5-1. The image transfer board 1-1 can also be called the sensor packaging board of the image transfer component.

[0031] In the embodiment of the present invention, the image transfer board 1-1 at the head end is designed as a special-shaped structure and used in cooperation with the instrument channel pipeline 5-1, which improves the space utilization rate of the head end 10 and provides the possibility for increasing the auxiliary water supply passage.

[0032] In some embodiments, a wire rope traction channel 7 is arranged in the wall surface of the bending part 20, and a wire rope is arranged in the wire rope traction channel 7. Preferably, there are four wire rope traction channels 7.

[0033] This embodiment provides a bending drive scheme. In a preferred embodiment, the four wire rope traction channels 7 are ideally evenly distributed around the circumference. However, due to the influence of other channel layouts in practice, it is relatively difficult to achieve a uniform 90-degree layout. Therefore, the design positions of the four wire rope traction channels 7 are allowed to have deviations to adapt to the layouts of other channels.

[0034] In some embodiments, the diameter of the auxiliary water supply pipeline 6-1 is not less than 0.5 mm, and the diameter of the electronic wire harness 1-2 is not greater than 1.4 mm.

[0035] In some embodiments, the width of the minimum gap between the instrument channel pipeline 5-1 and the electronic wire harness 1-2 is less than the diameters of the water and gas pipeline 2-1, the light guide assembly 3-1, and the auxiliary water supply pipeline 6-1.

[0036] This embodiment can avoid the extrusion damage of the pipelines caused by the movement of the water and gas pipeline 2-1, the light guide assembly 3-1, and the auxiliary water supply pipeline 6-1 to the other side during use.

[0037] In some embodiments, the electronic wire harness 1-2 is a CMOS wire harness.

[0038] In some embodiments, the lines connecting the four wire rope traction channels 7 to the center of the bending part divide the internal space of the bending part into four regions. The instrument channel pipeline 5-1 and the electronic wire harness 1-2 each occupy two regions, and the auxiliary water supply pipeline 6-1, the light guiding component 3-1, and the water and gas pipeline 2-1 are distributed in the remaining two regions.

[0039] This embodiment helps to further improve the stability of water supply and the stability of the entire device during operation.

[0040] The specific analysis is as follows: According to the hardness analysis, the visceral electronic wire harness 1-2 and the instrument channel pipeline 5-1 have the highest hardness, followed by the water and gas pipeline 2-1 and the auxiliary water supply pipeline 6-1, and the softest is the light guiding component 3-1. As Figure 4 shown, let the electronic wire harness 1-2 and the instrument channel pipeline 5-1 continue to be distributed diagonally. Since they have the highest hardness and relatively large sizes, the electronic wire harness 1-2 and the instrument channel pipeline 5-1 abut against each other during the bending process. Together with the four-way wire rope traction channel 7, they realize the spatial separation layout of the traction cavity inside the bending part, ensuring the limited movement range of the electronic wire harness 1-2 and the instrument channel pipeline 5-1 during the bending process and not squeezing the movement space of the water and gas pipeline 2-1, the auxiliary water supply pipeline 6-1, and the light guiding component 3-1. Thus, the stability of the auxiliary water supply pipeline 6-1 during the bending process is ensured.

[0041] In summary, through the layout design of the head-end precision structure and the wire threading design considering the softness and hardness of the bending part, the high utilization rate layout of each component at the head end and the spatial separation layout of each visceral object in the traction cavity are realized, thereby achieving the integrated auxiliary water supply function at an extremely fine scale.

[0042] Embodiment 2 An embodiment of the present invention provides a nasal endoscope, including: an operation part 102, a connection part 103, and the insertion part 101 of the nasal endoscope as described above. The insertion part 101, the operation part 102, and the connection part 103 are connected in sequence. The auxiliary water supply pipeline 6-1 penetrates through these three components: the operation part 102, the connection part 103, and the insertion part 101, and is connected to an external device's auxiliary water supply device through the auxiliary water supply joint of the connection part 103 for water supply. Water sequentially passes through the auxiliary water supply pipeline 6-1 inside the operation part 102 and the auxiliary water supply pipeline 6-1 inside the insertion part 101, and finally sprays out from the auxiliary water outlet at the head end.

[0043] In the embodiment of the present invention, the relatively hard electronic wire harness 1-2 and the instrument channel pipeline 5-1 are distributed diagonally, realizing the spatial separation layout of the traction cavity and ensuring the stability of water supply of the auxiliary water supply pipeline 6-1 in a narrow space during the bending process.

[0044] In the present invention, specific examples are used to illustrate the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. An insertion part of a nasal endoscope, characterized in that: include: A head end portion, a bending portion, and an insertion tube assembly, wherein the head end portion, the bending portion, and the insertion tube assembly are connected in sequence; A water-gas nozzle, an image transmission objective lens window, an illumination window, an auxiliary water supply outlet and an instrument channel outlet are constructed on the end surface at the distal end of the head end; an image transmission board is arranged in the head end; an electronic harness, a water-gas pipeline, a light guide component, an instrument channel pipeline and an auxiliary water supply pipeline are passed through the inside of the bending portion and the insertion tube assembly; the electronic harness extends into the head end and is connected to the image transmission board; the water-gas pipeline extends into the head end and is communicated with the water-gas nozzle; the light guide component extends into the head end and is aligned with the illumination window; the instrument channel pipeline extends into the head end and is connected to the The outlet of the instrument channel is connected, the auxiliary water supply pipeline extends into the head end and is connected with the auxiliary water supply outlet, the head end, the bending part and the insertion tube are all cylindrical structures, the diameters of the electronic wiring harness and the instrument channel pipeline are larger than the diameters of the water-gas pipeline, the light guide assembly and the auxiliary water supply pipeline; the distance between the line connecting the centers of the instrument channel pipeline and the electronic wiring harness and the center of the head end, the bending part or the insertion tube assembly is 0~1mm, and the water-gas pipeline and the auxiliary water supply pipeline are respectively located on both sides of the line connecting the centers of the instrument channel pipeline and the electronic wiring harness.

2. The insertion portion of the nasal endoscope according to claim 1, characterized in that: Two of the light guide components and the lighting windows are provided, and the two light guide components are respectively provided on both sides of the line connecting the instrument channel pipeline and the center of the electronic harness.

3. The insertion portion of the nasal endoscope according to claim 1, characterized in that: The spacing between the electronic harness and the instrument channel pipeline is less than 2 mm.

4. The insertion part of the nasal endoscope according to claim 1, characterized in that: An arc-shaped avoidance groove is arranged on one side of the image transmission board close to the instrument channel pipeline.

5. The insertion portion of the nasal endoscope according to claim 1, characterized in that: A wire rope traction channel is arranged in the wall surface of the curved portion, and a wire rope is arranged in the wire rope traction channel.

6. The insertion portion of the nasal endoscope according to claim 5, wherein: The wire rope traction channels are provided with four.

7. The insertion portion of the nasal endoscope according to claim 1, characterized in that: The diameter of the auxiliary water supply pipeline is not less than 0.5 mm, and the diameter of the electronic wiring harness is not more than 1.4 mm.

8. The insertion part of the nasal endoscope according to claim 1, characterized in that: The width of the minimum gap between the instrument channel pipeline and the electronic harness is smaller than the diameters of the water and gas pipeline, the light guide assembly and the auxiliary water supply pipeline.

9. The insertion part of the nasal endoscope according to claim 1, characterized in that: The electronic harness is a CMOS harness.

10. A nasal endoscope, characterized in that: include: An operating portion, a connecting portion, and an insertion portion of a transnasal endoscope according to any one of claims 1 to 9, wherein the insertion portion, the operating portion, and the connecting portion are connected in sequence.

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