Head end assembly and endoscope

Abstract

The utility model discloses a head end assembly and an endoscope. The head end assembly includes an insertion tube, a head end structure, a plurality of guide tube fittings and an outer tube. A working channel and at least two delivery channels are formed on the inner side of the insertion tube; the head end structure is arranged at the front end of the insertion tube, and has at least two first guide holes connected to at least two delivery channels in a one-to-one correspondence, and a second guide hole connected to the working channel; the two ends of each of the guide tube fittings are respectively inserted into a corresponding first guide hole and a delivery channel; the outer tube is sleeved on the outer side of the joint between the insertion tube and the head end structure, and is connected to both the insertion tube and the head end structure. The technical solution provided by the utility model makes it difficult for the insertion tube and the head end structure to have relative displacement in the radial direction, and the relative position is more reliable. It can also maximize the size of the working channel, so that it can be applied to more types of therapeutic devices.

Description

Technical Field

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

[0002] The endoscope includes a head end component for inserting into the patient's body, through which the image information of the patient's body is obtained, and the affected part can be treated in combination with the image information. Among them, the head end component generally includes an insertion tube, a front end structure, a camera structure, a working channel and a delivery channel. At present, there are usually two ways to connect the insertion tube and the head end structure: 1. Only relying on the outer tube for connection, the problem is that the connection is not firm enough and there are safety hazards; 2. Relying on the outer tube and the working channel for connection, the problem is that it will occupy the space of the working channel, and the working channel cannot be maximized, thereby limiting the use of treatment equipment. Utility Model Content

[0003] In view of this, the present invention aims to solve the problem that the traditional arrangement of the head end assembly makes the connection between the insertion tube and the head end structure unreliable, or limits the size of the working channel, thereby affecting the use of the treatment device.

[0004] In order to achieve the above object, the utility model proposes a head end assembly, comprising:

[0005] An insertion tube having a working channel and at least two delivery channels formed inside thereof;

[0006] A head end structure, disposed at the front end of the insertion tube, and having at least two first guide holes connected to at least two of the delivery channels in a one-to-one correspondence, and a second guide hole connected to the working channel;

[0007] A plurality of guide pipe fittings, wherein two ends of each guide pipe fitting are respectively inserted into a corresponding first guide hole and a corresponding conveying channel;

[0008] The outer tube is sleeved on the outer side of the joint between the insertion tube and the head end structure, and is connected to both the insertion tube and the head end structure.

[0009] Optionally, on the cross section of the insertion tube, the centers of the two delivery channels and the center of the working channel are arranged non-collinearly.

[0010] Optionally, the head end structure includes a head end body and a connecting section extending backward from the head end body, the second guide hole and each of the first guide holes are arranged to pass through the head end body and the connecting section, and the outer tube is sleeved on the outside of the insertion tube and the connecting section.

[0011] Optionally, the outer tube is bonded to both the insertion tube and the connecting section.

[0012] Optionally, in a radial direction along the insertion tube, an outer surface of the outer tube is flush with an outer surface of the head end body.

[0013] Optionally, two conveying channels are provided, and the two conveying channels are symmetrically arranged on both sides of the working channel; two guiding pipe fittings are provided, and both ends of each guiding pipe fitting are respectively fixedly inserted into the corresponding conveying channel and the first guiding hole.

[0014] Optionally, the head end assembly further comprises a traction wire fixing ring, wherein the traction wire fixing ring is located between the insertion tube and the head end structure, and a plurality of through holes are provided on the traction wire fixing ring, and the plurality of through holes are arranged in a one-to-one correspondence with the plurality of the conveying channels and the working channels.

[0015] Optionally, a mounting hole is further provided on the head end structure, and the head end assembly further comprises a camera structure and an illumination structure provided in the mounting hole, and a conductive wire electrically connected to the camera structure and the illumination structure;

[0016] A guide channel is formed in the insertion tube, and the guide wire can pass through the rear end of the mounting hole and pass through the guide channel.

[0017] Optionally, in a cross section of the head end structure, the center of the mounting hole and the center of the second guide hole are arranged at intervals along the radial direction of the head end structure.

[0018] The utility model also provides an endoscope, comprising the head end assembly mentioned above.

[0019] The technical solution provided by the utility model has the following beneficial effects:

[0020] The head end assembly provided by the utility model comprises an insertion tube, a head end structure, a plurality of guide tube fittings and an outer tube. The insertion tube is suitable for being connected with the main body of the endoscope. The delivery channel can be used for delivering therapeutic liquid (such as saline) or therapeutic gas to the affected part or leading it out from the affected part. The working channel can be used for the insertion of therapeutic instruments, so that the therapeutic instruments can be better inserted into the affected part for treatment. The head end structure can be suitable for carrying the camera structure and the lighting structure, etc., so that the camera structure is closer to the affected part and clearer image information is obtained. The plurality of guide tube fittings are inserted into the delivery channel of the insertion tube and into the first guide hole of the insertion head end structure, so that the plurality of guide tube fittings are connected through the plurality of guide tube fittings. The insertion tube and the head end structure are connected; further, an outer tube is sleeved on the outside of the joint between the insertion tube and the head end structure, so as to connect and fix the insertion tube and the head end structure, so that the connection between the insertion tube and the head end structure is more reliable, and at least two guide tube fittings are plugged and fixed with the delivery channel on the insertion tube and the first guide hole on the head end structure, and the insertion tube and the head end structure are further limited by the outer tube, so that the insertion tube and the head end structure are relatively limited at least three places along their radial direction. According to the triangle stability principle, the insertion tube and the head end structure are not easy to be relatively displaced in the radial direction, and the relative position is more reliable. Therefore, when a working channel is also provided on the insertion tube, it is not necessary to provide a guide tube fitting in the working channel to connect and fix with the head end structure, and it can still ensure that the working channel and the second guide hole on the head end structure are accurately aligned, and the size of the working channel can be maximized, so that it can be applicable to more types of therapeutic devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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 described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0022] Figure 1 A schematic structural diagram of an embodiment of a head end assembly provided by the utility model;

[0023] Figure 2 for Figure 1 A schematic diagram of an exploded structure of the head end assembly;

[0024] Figure 3 for Figure 1 A schematic cross-sectional structure diagram of the head end assembly described in;

[0025] Figure 4 for Figure 1 A schematic diagram of the structure of the head end assembly (excluding the insertion tube) described in .

[0026] Description of Figure Numbers:

[0027] 100-head end assembly; 1-insertion tube; 11-delivery channel; 12-working channel; 2-head end structure; 21-head end body; 22-connecting section; 23-first guide hole; 24-second guide hole; 25-installation hole; 3-guide tube fitting; 4-outer tube; 5-traction wire fixing ring; 6-camera structure; 7-illumination structure; 8-conducting wire.

[0028] The realization of the purpose, functional characteristics and excellent effects of the utility model will be further explained below in conjunction with specific embodiments and drawings. DETAILED DESCRIPTION

[0029] 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 of 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.

[0030] It should be noted that if a directional indication is involved in the embodiments of the present invention, the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0031] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0032] The utility model provides a head end component 100, which can be applicable to an endoscope. The head end component 100 is inserted into a patient's body to obtain image information of an affected part of the patient, and the affected part can be treated according to the image information to enhance the patient's treatment experience.

[0033] Specifically, see Figure 1 and Figure 2 In this embodiment, the head end assembly 100 includes an insertion tube 1, a head end structure 2, a plurality of guide tube fittings 3 and an outer tube 4. The insertion tube 1 has a working channel and at least two conveying channels 11 formed on its inner side; the head end structure 2 is arranged at the front end of the insertion tube 1, and has at least two first guide holes 23 connected to at least two conveying channels 11 in a one-to-one correspondence, and a second guide hole 24 connected to the working channel 12; the two ends of each of the guide tube fittings 3 are respectively inserted into a corresponding first guide hole 23 and a conveying channel 11, so that the insertion tube 1 and the head end structure 2 are connected through the guide tube fittings 3; the outer tube 4 is sleeved on the outer side of the joint between the insertion tube 1 and the head end structure 2, and is connected to both the insertion tube 1 and the head end structure 2.

[0034] In this embodiment, the insertion tube 1 is suitable for connecting with the endoscope body, the delivery channel 11 can be used to deliver therapeutic liquid (such as saline) or therapeutic gas to the affected area, or to be led out from the affected area, and the working channel 12 can be used for the therapeutic instrument to be inserted, so that the therapeutic instrument can be better inserted into the affected area for treatment; the head end structure 2 can be suitable for carrying the camera structure 6 and the lighting structure 7, etc., so that the camera structure 6 is closer to the affected area and obtains clearer image information; a plurality of guide tube fittings 3 are inserted into the delivery channel 11 of the insertion tube 1 and the first guide hole 23 of the insertion head end structure 2, so that the insertion tube 1 and the head end structure 2 are connected through the plurality of guide tube fittings 3; Furthermore, the outer tube 4 is sleeved on the outer side of the joint between the insertion tube 1 and the head end structure 2, so as to connect and fix the insertion tube 1 and the head end structure 2, so that the connection between the insertion tube 1 and the head end structure 2 is more reliable, and at least two guide tube fittings 3 are plugged and fixed with the delivery channel 11 on the insertion tube 1 and the first guide hole 23 on the head end structure 2, and the insertion tube 1 and the head end structure 2 are further limited by the outer tube 4, so that the insertion tube 1 and the head end structure 2 are relatively limited at least three places along their radial direction. According to the triangle stability principle, the insertion tube 1 and the head end structure 2 are not easy to be relatively displaced in the radial direction, and the relative position is more reliable. Therefore, when the working channel 12 is also provided on the insertion tube 1, the guide tube fitting 3 does not need to be provided in the working channel 12 to connect and fix with the head end structure 2, and the working channel 12 can still be accurately aligned with the second guide hole 24 on the head end structure 2, and the size of the working channel 12 can be maximized, so that it can be applied to more types of therapeutic devices.

[0035] It should be noted that, combined with Figure 1As shown in the figure, when the head end assembly 100 is used normally, the end of the head end assembly 100 facing the affected part is the front, and the end facing away from the affected part is the rear. The head end structure 2 is located at the front end of the head end assembly 100 and is arranged closest to the affected part. The insertion depth of the insertion tube 1 can be adjusted according to the position of the affected part. The description of the relevant orientation in the utility model can be used as a reference.

[0036] The insertion tube 1 is roughly cylindrical, and a plurality of channels can be formed on the inner side of the insertion tube 1. The plurality of channels are all arranged along the axial direction of the insertion tube 1 and are isolated from each other. The plurality of channels can be distinguished according to their functions, wherein the channels used to deliver therapeutic liquids or therapeutic gases can be collectively referred to as delivery channels 11, and the delivery channels 11 can be used to deliver liquids or gases to the affected part, or can also guide the gas or liquid out of the affected part. In addition, a working channel 12 is also formed on the inner side of the insertion tube 1, and the working channel 12 can be used for the therapeutic device to pass through it, so that the therapeutic device can pass through the working channel 12 to the head end structure 2, and a second guide hole 24 is also provided on the head end structure 2, and the second guide hole 24 and the working channel 12 are arranged to be connected and connected, so that the therapeutic device can pass through the working channel 12 to enter the second guide hole 24 and then reach the affected part.

[0037] Moreover, since a plurality of guide tube fittings 3 are inserted into the corresponding delivery channels 11 and the corresponding first guide holes 23, the insertion tube 1 and the head end structure 2 are connected and fixed together by a plurality of guide tube fittings 3 and an outer tube 4. Therefore, there is no need to set a guide tube fitting 3 in the working channel 12 for connection, so that the inner diameter size of the working channel 12 can be maximized, thereby adapting to the use requirements of larger therapeutic instruments and having better applicability.

[0038] Preferably, on the cross section of the insertion tube 1, the centers of the two delivery channels 11 and the center of the working channel 12 are arranged non-collinearly, so that the connection centers of at least two of the guide tube fittings 3 and the connection centers with the outer tube 4 are not on the same straight line. Therefore, according to the triangle stability principle, the relative displacement of the insertion tube 1 and the head end structure 2 in the radial direction is completely restricted to ensure that the insertion tube 1 and the head end structure 2 do not move relative to each other during use, and can ensure that the working channel 12 and the second guide hole 24 are always accurately aligned to ensure the smooth use of the therapeutic device.

[0039] Specifically, for the head end structure 2, combined with Figure 2 and Figure 3As shown, the head end structure 2 includes a head end body 21, and a connecting section 22 extending backward from the head end body 21, the head end body 21 is also roughly cylindrical, the connecting section 22 extends backward from the rear end of the head end body 21 along the axial direction of the head end body 21, the second guide hole 24 and each of the first guide holes 23 are set to penetrate the head end body 21 and the connecting section 22, the outer tube 4 is sleeved on the outside of the insertion tube 1 and the connecting section 22, and the outer tube 4 is used to connect the connecting section 22 and the insertion tube 1.

[0040] Preferably, the outer tube 4 is bonded to the insertion tube 1 and the connecting section 22 to ensure better connection strength and better sealing.

[0041] Preferably, in the radial direction of the insertion tube 1 , the outer surface of the outer tube 4 is flush with the outer surface of the head end body 21 , so that the head end assembly 100 can be inserted into the patient's body more smoothly.

[0042] In this embodiment, two conveying channels 11 are provided, and the two conveying channels 11 are symmetrically arranged on both sides of the working channel 12; two guide pipe fittings 3 are provided, and the two ends of each guide pipe fitting 3 are respectively fixedly inserted into the corresponding conveying channel 11 and the first guide hole 23, and then the insertion tube 1 and the connecting section 22 are connected through the outer tube 4, so that three connections are formed between the insertion tube 1 and the head end structure 2, and the insertion tube 1 and the head end structure 2 will not move relative to each other in the radial direction, so that the connection is more stable.

[0043] Moreover, the head end assembly 100 also includes a traction wire fixing ring 5, which is located between the insertion tube 1 and the head end structure 2. The traction wire fixing ring 5 can be used to fix the traction wire, and the direction of the head end structure 2 can be controlled by the traction wire. Specifically, the traction wire fixing ring 5 is located between the insertion tube 1 and the connecting section 22, and the outer diameter of the insertion tube 1, the outer diameter of the traction wire fixing ring 5 and the outer diameter of the connecting section 22 are all consistent. The traction wire fixing ring 5 is provided with a plurality of through holes, and the plurality of through holes are arranged in a one-to-one correspondence with the plurality of the conveying channels 11 and the working channels 12. The guide pipe fitting 3 is inserted into the conveying channel 11, the through hole and the first guide hole 23, so as to connect the insertion tube 1 and the head end structure 2.

[0044] In addition, combined Figure 2 and Figure 4As shown, a mounting hole 25 is also provided on the head end structure 2, and the head end assembly 100 also includes a camera structure 6 and an illumination structure 7 arranged in the mounting hole 25, and a conductive wire 8 electrically connected to the camera structure 6 and the illumination structure 7. The camera structure 6 and the illumination structure 7 are both located at the front side of the head end body 21 and are flush with the front end surface of the head end body 21, so that the camera structure 6 can better obtain image information of the affected part. Among them, the illumination structure 7 may include two lighting lamps, and the two lighting lamps are arranged on both sides of the camera structure 6 to provide more uniform and better illumination. A guide channel is formed in the insertion tube 1, and the conductive wire 8 can pass through the rear end of the mounting hole 25 and pass through the guide channel. The conductive wire 8 is suitable for being electrically connected to the circuit structure in the endoscope body, and can provide power to the camera structure 6 and the illumination structure 7 through the conductive wire 8, and can also transmit the image information collected by the camera structure 6.

[0045] Preferably, on the cross section of the head end structure 2, the center of the mounting hole 25 and the center of the second guide hole 24 are arranged at intervals along the radial direction of the head end structure 2, so that the diameter of the second guide hole 24 can be larger, thereby being applicable to the use requirements of more types of therapeutic devices.

[0046] The utility model also provides an endoscope, which includes the above-mentioned head end component 100. The head end component 100 makes the endoscope more stable during detection, so as to ensure better detection and treatment effects and enhance the user experience.

[0047] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure made using the contents of the specification and drawings of the present invention, or directly or indirectly used in other related technical fields, is also included in the patent protection scope of the present invention.

Claims

1. A head end assembly, characterized in that: include: An insertion tube having a working channel and at least two delivery channels formed inside thereof; A head end structure, disposed at the front end of the insertion tube, and having at least two first guide holes connected to at least two of the delivery channels in a one-to-one correspondence, and a second guide hole connected to the working channel; A plurality of guide pipe fittings, wherein two ends of each guide pipe fitting are respectively inserted into a corresponding first guide hole and a corresponding conveying channel; The outer tube is sleeved on the outer side of the joint between the insertion tube and the head end structure, and is connected to both the insertion tube and the head end structure.

2. The head end assembly according to claim 1, characterized in that In a cross section of the insertion tube, the centers of the two delivery channels and the center of the working channel are arranged non-collinearly.

3. The head end assembly according to claim 1, characterized in that The head end structure includes a head end body and a connecting section extending backward from the head end body, the second guide hole and each of the first guide holes are arranged to penetrate the head end body and the connecting section, and the outer tube is sleeved on the outside of the insertion tube and the connecting section.

4. The head end assembly according to claim 3, characterized in that: The outer tube is bonded to both the insertion tube and the connecting section.

5. The head end assembly according to claim 3, characterized in that: In a radial direction along the insertion tube, an outer surface of the outer tube is flush with an outer surface of the head end body.

6. The head end assembly according to claim 1, characterized in that There are two conveying channels, which are symmetrically arranged on both sides of the working channel; there are two guiding pipe fittings, and both ends of each guiding pipe fitting are respectively fixedly inserted in the corresponding conveying channel and the first guiding hole.

7. The head end assembly according to claim 1, characterized in that: The head end assembly also includes a traction wire fixing ring, which is located between the insertion tube and the head end structure. The traction wire fixing ring is provided with a plurality of through holes, and the plurality of through holes are arranged in a one-to-one correspondence with the plurality of the conveying channels and the working channels.

8. The head end assembly according to claim 1, characterized in that: The head end structure is also provided with a mounting hole, and the head end assembly further includes a camera structure and an illumination structure arranged in the mounting hole, and a conductive wire electrically connected to the camera structure and the illumination structure; A guide channel is formed in the insertion tube, and the guide wire can pass through the rear end of the mounting hole and pass through the guide channel.

9. The head end assembly according to claim 8, characterized in that In a cross section of the head end structure, the center of the mounting hole and the center of the second guide hole are arranged at intervals along the radial direction of the head end structure.

10. An endoscope, characterized in that: Comprising a head end assembly as claimed in any one of claims 1 to 9.

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