CN220069658U

CN220069658U - Insertion structure of endoscope and endoscope

Info

Publication number: CN220069658U
Application number: CN202320924091.2U
Authority: CN
Inventors: 陈东; 罗朝政; 王翔
Original assignee: Xinguangwei Medical Technology Suzhou Co ltd
Current assignee: Xinguangwei Medical Technology Suzhou Co ltd
Priority date: 2023-04-23
Filing date: 2023-04-23
Publication date: 2023-11-24
Anticipated expiration: 2033-04-23

Abstract

The utility model discloses an insertion structure of an endoscope and the endoscope, comprising an inner tube, an outer tube and a head end assembly; the inner tube is provided with a first channel, the tail end of the first channel forms a first opening, the outer tube is sleeved outside the inner tube, and a second channel is formed between the outer tube and the inner tube; the end part of the outer tube is adjacently provided with an opening part and a combining part, the first opening is positioned in the opening part and is communicated with the outside through the opening part, the combining part is provided with a second opening, and the second opening is positioned at the tail end of the second channel and is communicated with the second channel; the head end component is connected with the combining part, and projections of the head end component and the opening part on the cross section of the outer tube are staggered. Therefore, the small size of the head end of the insertion structure is ensured, and meanwhile, the electronic device with better performance can be configured.

Description

Insertion structure of endoscope and endoscope

Technical Field

The utility model belongs to the technical field of medical equipment, and particularly relates to an insertion structure of an endoscope and the endoscope.

Background

Endoscopes generally include a handpiece and an elongated insertion structure. The insertion structure includes an inner tube, an outer tube, and a head end assembly. The headend assembly is used to house electronics such as camera modules and lighting modules for ease of viewing. Existing endoscopes provide electronics and instrument holes within the headend assembly, which is then secured to the end of the insertion structure.

However, in order to suppress the risk of large damage to the human body when extending into the human body due to the outer diameter of the insertion structure being too large, the outer circumferential dimension of the end portion of the insertion structure needs to be made as small as possible. That is, the peripheral dimension of the head end assembly needs to be smaller, which will tend to reduce the space for installing the electronic device and the instrument hole, and the performance of the electronic device needs to be sacrificed, for example, a camera module with lower image resolution is adopted, so that the adaptability of the instrument is affected and the shooting effect is reduced.

Accordingly, there is a need for an improvement over the prior art to overcome the deficiencies described in the prior art.

Disclosure of Invention

Therefore, the utility model aims to solve the technical problem that the external diameter size and the operation performance of the insertion structure of the endoscope in the prior art are not balanced.

In order to solve the above technical problems, the present utility model provides an insertion structure of an endoscope, comprising:

an inner tube having a first channel, the end of the first channel forming a first opening;

the outer pipe is sleeved outside the inner pipe, and a second channel is formed between the outer pipe and the inner pipe;

a head end assembly connected to an end of the outer tube, wherein an electronic device is arranged in the head end assembly;

the end of the outer tube is provided with an opening and a combining part adjacently, the first opening is positioned in the opening and is communicated with the outside through the opening, the combining part is provided with a second opening, the second opening is positioned at the tail end of the second channel and is communicated with the second channel, the head end assembly is connected with the combining part, and projections of the head end assembly and the opening on the cross section of the outer tube are staggered.

In one embodiment, the maximum outer diameter of the head end assembly is no greater than the diameter of the outer tube.

In one embodiment, the head end assembly includes a connection end connected with the joint and a head end opposite to the connection end, the electronic device is disposed in the head end, a cross-sectional dimension of the head end is greater than a cross-sectional dimension of the connection end, and an area of a cross-section of the connection end is gradually increased along a direction approaching the head end.

In one embodiment, the open portion includes an inlet located outside the inner tube, and the second passage communicates with the outside through the inlet.

In one embodiment, the outer contour of the open portion transitions smoothly.

In one embodiment, the outer contour of the open portion gradually approaches the head end assembly along the insertion direction of the insertion structure.

In one embodiment, the open end is flush with the abutment surface of the head end assembly.

In one embodiment, the head end assembly includes a mounting cavity, the mounting cavity is in communication with the second opening, and the electrical circuit of the electronic assembly is disposed through the second opening and is disposed in the second channel.

In one embodiment, the connection end is plugged with the joint portion.

In addition, the utility model also provides an endoscope, which comprises the insertion structure of any embodiment.

The technical scheme provided by the utility model has the following advantages:

the utility model provides an insertion structure of an endoscope and the endoscope, comprising an inner tube, an outer tube and a head end assembly; the inner tube is provided with a first channel, the tail end of the first channel forms a first opening, the outer tube is sleeved outside the inner tube, and a second channel is formed between the outer tube and the inner tube; the end part of the outer tube is adjacently provided with an opening part and a combining part, the first opening is positioned in the opening part and is communicated with the outside through the opening part, the combining part is provided with a second opening, and the second opening is positioned at the tail end of the second channel and is communicated with the second channel; the head end component is connected with the combining part, and projections of the head end component and the opening part on the cross section of the outer tube are staggered. So, the size setting of head end subassembly does not influence the setting of inner tube size, and first passageway can keep better mechanical adaptability, and simultaneously, the size of head end subassembly can match the volume of electronic device alone, and the mutual noninterference between the first passageway has ensured that insert the size of structure is small and exquisite, can dispose the electronic device of preferred performance simultaneously.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of an insertion structure of an endoscope according to an embodiment of the present utility model;

FIG. 2 is a partially exploded view of an insertion structure of an endoscope according to an embodiment of the present utility model;

fig. 3 is a schematic cross-sectional view of the insertion structure shown in fig. 1.

Reference numerals illustrate:

30-an inner tube; 20-an outer tube; 10-headend assembly; 32-a first channel; 320-a first opening; 21-an open part; 210-inlet; 22-bond; 220-a second opening; 24-a second channel; 12-a body; 121-a connection end; 122-headend; 120-port; 123-abutting side faces; 15-electronic device.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. The utility model will be described in detail hereinafter with reference to the drawings in conjunction with embodiments. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

In the present utility model, unless otherwise indicated, terms of orientation such as "upper, lower, top, bottom" are used generally with respect to the orientation shown in the drawings or with respect to the component itself in the vertical, upright or gravitational direction; also, for ease of understanding and description, "inner and outer" refers to inner and outer relative to the profile of each component itself, but the above-mentioned orientation terms are not intended to limit the present utility model.

Example 1

The present embodiment provides an insertion structure of an endoscope. Referring to fig. 1-3, the insertion structure includes an inner tube 30, an outer tube 20, and a head end assembly 10.

Wherein both the inner tube 30 and the outer tube 20 are hollow tubes. The outer tube 20 has a larger radial dimension than the inner tube 30, and the outer tube 20 is sleeved outside the inner tube 30. The head end assembly 10 is disposed at an end of an outer tube 20. In the axial direction of the outer tube 20, the head end assembly 10 is forward of the end of the outer tube 20. The end of the inner tube 30 is located substantially within the outer tube 20, and thus, in the axial direction, the head end assembly 10 is also located forward of the inner tube 30. That is, the head end assembly 10 is positioned at the head end of the insertion structure, during which the head end assembly 10 is advanced into the body interior, followed by the outer tube 20 and the inner tube 30.

The term "front" refers to a direction in which a member inserted before is positioned in front of a member inserted after the member is inserted with respect to the direction of insertion of the insertion structure.

Specifically, the inner tube 30 forms a first passage 32 inside, and the end of the first passage 32 forms a first opening 320. A second passageway 24 is also formed between the inner tube 30 and the outer tube 20. The second channel 24 may be defined by an outer surface of the inner tube 30 and an inner surface of the outer tube 20, the second channel 24 and the first channel 32 together being substantially equal to the tube diameter channel dimension of the outer tube 20. More specifically, the inner tube 30 is disposed against the inner sidewall of the outer tube 20 and the second channel 24 is generally meniscus-shaped in cross-section.

The headend assembly 10 is used to house electronic devices. Specifically, the interior of the headend assembly 10 includes a mounting cavity and electronics 15 disposed within the mounting cavity. Illustratively, the electronic device 15 may include a camera module and an illumination module through which internal anatomy of the body is observed when the camera module and the illumination module are in operation. The camera module may include a CMOS image sensor (Complementary Metal-Oxide-Semiconductor), a CCD image sensor (Charge-Coupled Device), and the lighting module may include an LED (Light Emitting Diode ), an LD (Laser Diode), and the like, and the camera module and the lighting module may further include a light guide fiber bundle, or may be a combination of the light guide fiber bundle and the image sensor, respectively, for example, the camera module includes a CMOS image sensor, and the lighting module includes a light guide fiber bundle.

The electronic device 15 is disposed in the mounting chamber, and the electronic device 15 is not limited to the case where the front end portion of the electronic device 15 protrudes from the mounting chamber.

The end of the outer tube 20 includes an opening 21 and a coupling 22. The opening portion 21 and the joint portion 22 are both located on the end face of the end portion of the outer tube 20. The opening portion 21 and the coupling portion 22 are disposed adjacently, and the first opening 320 is located in the opening portion 21 and communicates with the outside through the opening portion 21. The junction 22 has a second opening 220, the first opening 220 being located at an end of the second channel 24 and communicating with the second channel 24. The head end assembly 10 is connected to the joint 22 and is offset from the open portion 21. When the head end assembly 10 is attached to the joint 22, the front of the open portion 21 remains open (empty), and the head end assembly 10 and the open portion 21 do not interfere with each other. In other words, the projections of the head end assembly 10 and the open portion 21 on the cross section of the outer tube 20 are offset from each other.

After the head end assembly 10 is attached to the joint 22, the mounting cavity of the head end assembly 10 communicates with the second opening 220. The electronic device 15 may comprise electrical wiring, and the electrical wiring of the electronic device 15 may be provided inside the second channel 24 and connected to the power supply module and/or the signal processing module. Specifically, an electrical circuit, which may include a power supply circuit and/or a signal circuit, is provided within the second channel 24 in an insulated and sealed manner. The electronic device 15 may not include any electrical circuit, and the electronic device 15 and the external device may be connected by a wireless communication method and transmit signal data, where the wireless communication method includes, but is not limited to, WIFI communication, bluetooth communication, radio frequency communication, zigBee communication, and the like.

In this embodiment, the head end subassembly staggers the setting each other with open, and the size setting of head end subassembly does not influence the setting of inner tube size, and first passageway can keep better mechanical adaptability. Meanwhile, as the head end assembly mainly accommodates the electronic device, the size of the head end assembly can be independently matched with the volume of the electronic device and does not interfere with the first channel, so that the small size of the insertion structure is ensured, and meanwhile, the electronic device with better performance can be configured, thereby providing more accurate data for operation. For example, a higher resolution CMOS image sensor may be configured within the headend assembly.

Fig. 3 shows a section through the outer tube 20 and the centre line of the front end assembly 10. Referring to fig. 3, the radial thickness D of the head end assembly 10, the radial thickness D1 of the opening 21, and the head end assembly 10 and the opening 21 are sequentially distributed in the axial direction, and the head end assembly 10 is disposed without increasing the maximum radial dimension of the outer tube 20. The head end part of the whole insertion structure is thinner and better in trafficability.

To reduce the extent of damage to the body when the head end structure 10 is inserted into the body, the radial dimension of the head end structure 10 may be set to be no greater than the radial dimension of the outer tube 20, in particular, the maximum outer diameter of the head end assembly 10 is no greater than the diameter (outer diameter) of the outer tube 20. In this manner, the placement of the head end structure 10 does not increase the maximum radial dimension of the insertion structure. That is, the placement of the head end structure 10 does not increase the extent of damage to the body.

In a specific embodiment, please refer to fig. 2 and 3 with emphasis. The headend assembly 10 includes a main body 12. The inside of the main body 12 forms the above-described mounting cavity, and the electronic device 15 is disposed inside the mounting cavity of the main body 12. Body 12 includes a connection end 121 and a head end 122. The connection end 121 and the head end 122 are opposite ends of the main body 12, the connection end 121 and the head end 122 are sequentially arranged along the insertion direction, and the head end 122 is located in front of the connection end 121. The connection end 121 is connected to the coupling portion 22. Electronics 15 are disposed within header 122. To facilitate housing electronics 15, header 122 has a cross-sectional dimension that is greater than a cross-sectional dimension of connection end 121. The cross-sectional area of the connecting end 121 gradually increases in a direction approaching the head end 122, and the outer side surface of the main body 12 is smoothly transited, suppressing damage to the body of the insertion structure during insertion.

Headend 122 has a port 120 through which electronics 15 obtains tissue data at the insertion site. The port 120 is formed at the end of the mounting cavity into which the electronic device 15 can be mounted from the port 120.

In one embodiment, the connection end 121 and the coupling end 22 are configured as a plug-in structure, and the head end assembly 10 and the outer tube 20 are detachably plugged through the connection end 121 and the coupling end 22, so as to facilitate the disassembly of the head end assembly 10 to replace different head end assemblies.

In a specific implementation, the insertion structure is also used to infuse some medical items to the insertion site, so that the inner tube 30 may be in communication with the external infusion structure, and the first channel 32 is used to deliver medical items, which may be carbon dioxide, saline, local anesthetic drugs, etc. Accordingly, to maintain pressure balance within the insertion site, the insertion structure may also recover a portion of the tissue fluid that may be used for in vitro studies. Specifically, as shown in connection with fig. 1 and 2, the open portion 21 includes an inlet 210 located outside the inner tube 30. The inlet 210 communicates with the second passage 24. In other words, the second passage 24 communicates with the outside through the inlet 210. When medical items are injected from the first opening 320, tissue fluid enters the second channel 24 through the inlet 210 and exits the body through the second channel 24 under pressure. In some embodiments, inlet 210 may also be used as an inlet for injecting medical items into the body, and first opening 320 is used to recover tissue fluid, i.e., when medical items are injected into the body from second passageway 24 and inlet 210, the tissue fluid is forced out of the body through first opening 320 and first passageway 32.

Since the opening portion 21 and the connecting portion 22 are arranged side by side, the opening portion 21 is located at one side of the connecting portion 22, and the end face of the opening portion 21 is in contact with the tissue during insertion. In order to inhibit injury of human body in the insertion process, the outline of the opening part 21 is smoothly transited, no sharp corner structure exists, the tissue is not additionally stabbed in the penetration process, and the safety is higher.

Further, the outer contour of the opening portion 21 gradually approaches the head end assembly 10 in the insertion direction. That is, the opening portion 21 becomes thinner and thinner in the insertion direction, and finally meets the head end assembly 10. In particular, the open portion 21 is configured as an inclined tip, the cross-sectional dimension of which gradually decreases, gradually expanding the opening dimension during insertion, reducing the risk of injury to the body.

Still further, the head end assembly 10 includes an abutment surface 123 that abuts the open portion 21. The distal end of the open portion 21 is flush with the abutment surface 123 of the head end assembly 10. The outer contour of the head end assembly 10 is connected with the outer contour of the opening 21 and is in smooth transition, so that the smoothness and smoothness of the insertion process are further ensured.

In a specific implementation scenario, the insertion structure is applied to an endoscope. The endoscope includes a hand-held portion connected to the insertion structure for grasping by an operator. The insertion structure is not provided with a head end assembly and one end of the insertion structure is connected with the hand-held part, and in use, the first channel 32 can be used for passing an instrument, so the first channel 32 can also be named as an instrument hole. The instrument may extend from the handpiece through the first passageway 32 and out of the first opening 320 to facilitate surgical manipulation of the insertion section.

Example 2

The utility model also provides an endoscope comprising the insertion structure according to any of the embodiments. The content of the endoscope can be found in the related description of embodiment 1, and will not be described herein.

It will be apparent that the embodiments described above are merely some, but not all, embodiments of the utility model. Based on the embodiments of the present utility model, those skilled in the art may make other different changes or modifications without making any creative effort, which shall fall within the protection scope of the present utility model.

Claims

1. An insertion structure of an endoscope, comprising:

an inner tube (30) having a first channel (32), the end of the first channel (32) forming a first opening (320);

the outer tube (20) is sleeved outside the inner tube (30), and a second channel (24) is formed between the outer tube (20) and the inner tube (30);

a head end assembly (10) connected to an end of the outer tube (20), wherein an electronic device (15) is arranged in the head end assembly (10);

the end of the outer tube (20) is provided with an opening part (21) and a combining part (22) adjacently, the first opening (320) is positioned in the opening part (21) and is communicated with the outside through the opening part (21), the combining part (22) is provided with a second opening (220), the second opening (220) is positioned at the tail end of the second channel (24) and is communicated with the second channel (24), the head end assembly (10) is connected with the combining part (22), and projections of the head end assembly (10) and the opening part (21) on the cross section of the outer tube (20) are staggered.

2. The insertion structure according to claim 1, characterized in that the maximum outer diameter of the head end assembly (10) is not greater than the diameter of the outer tube (20).

3. The insertion structure according to claim 1, wherein the head end assembly (10) includes a connection end (121) connected to the joint (22) and a head end (122) opposite to the connection end (121), the electronic device (15) is disposed in the head end (122), a cross-sectional dimension of the head end (122) is larger than a cross-sectional dimension of the connection end (121), and an area of a cross-section of the connection end (121) is gradually increased in a direction approaching the head end (122).

4. The insertion structure according to claim 1, characterized in that the open portion (21) comprises an inlet (210) located outside the inner tube (30), through which inlet (210) the second channel (24) communicates with the outside.

5. The insertion structure according to claim 1, characterized in that the outer contour of the open portion (21) transitions smoothly.

6. The insertion structure according to claim 5, characterized in that the outer contour of the opening (21) gradually approaches the head end assembly (10) along the insertion direction of the insertion structure.

7. The insertion structure according to claim 6, characterized in that the end of the open portion (21) is flush with the abutment surface (123) of the head end assembly.

8. The insertion structure according to claim 1, wherein the head end assembly (10) comprises a mounting cavity in communication with the second opening (220), the electrical wiring of the electronic device (15) being threaded through the second opening (220) into the second channel (24).

9. An insertion structure according to claim 3, characterized in that the connection end (121) is plugged into the junction (22).

10. An endoscope comprising the insertion structure of any one of claims 1-9.