Endoscope and insertion portion thereof

Abstract

The present application belongs to the technical field of medical devices, and particularly relates to an endoscope and an insertion portion thereof. A working channel is arranged in the insertion portion, a first suction hole is formed in an outer peripheral surface of the far end of the insertion portion, and the first suction hole penetrates through a side wall of the insertion portion and is in communication with the working channel. The outer peripheral surface of the far end of the insertion portion radially protrudes to form a protrusion structure, the first suction hole is located on one side of the protrusion structure, and the protrusion structure radially extends beyond the first suction hole. The protrusion structure of the present application enables a gap to be formed between the first suction hole and human tissue, thereby preventing the part of the insertion portion in which the first suction hole is formed from making contact with human tissue to reduce the risk of human tissue blocking the first suction hole and thus solving the blockage problem that can occur when the insertion portion is used to suction secretions.

Description

Endoscope and its insertion part Technical Field

[0001] This application belongs to the field of medical device technology, specifically relating to an endoscope and its insertion part. Background Technology

[0002] Suctioning is a routine clinical procedure. It usually refers to the removal of secretions from the respiratory tract through the mouth, nose, or artificial airway to maintain airway patency and prevent complications such as aspiration pneumonia, atelectasis, and suffocation.

[0003] Current suction endoscopes include an insertion section, with a suction hole on the outer peripheral surface of the distal end of the insertion section. Secretions are suctioned out through the suction hole and the suction channel inside the insertion section. However, blockage often occurs when using current suction endoscopes to suction secretions from the human body. Utility Model Content

[0004] The purpose of this application is to provide an endoscope and its insertion part that can reduce the risk of blockage when using existing endoscopes such as suction endoscopes to remove foreign objects from the human body.

[0005] To solve the above-mentioned technical problems, this application is implemented as follows:

[0006] In a first aspect, this application provides an insertion part of an endoscope, the insertion part having a working channel, and a first suction hole on the outer peripheral surface of the distal end of the insertion part, the first suction hole penetrating the side wall of the insertion part and communicating with the working channel.

[0007] The outer peripheral surface of the distal end of the insertion part protrudes radially to form a raised structure, and the first suction hole is located on one side of the raised structure, with the raised structure extending radially beyond the first suction hole.

[0008] Secondly, this application provides an endoscope including the aforementioned insertion portion.

[0009] The beneficial technical effects of this application are as follows:

[0010] In this application, the outer peripheral surface of the distal end of the insertion part is provided with a first suction hole, and the outer peripheral surface of the distal end of the insertion part protrudes radially to form a raised structure. The raised structure extends radially beyond the first suction hole and is located on one side of the first suction hole. After the insertion part of this application is inserted into the human body, even if a large negative pressure is applied to the first suction hole to make the insertion part move towards the direction of human tissue, the raised structure will first come into contact with the human tissue, thereby separating the distal end of the insertion part from the human tissue and forming a gap between the distal end of the insertion part and the human tissue. That is, a gap is formed between the first suction hole and the human tissue to prevent the part of the insertion part with the first suction hole from adhering to the human tissue, thereby reducing the risk of human tissue blocking the first suction hole and solving the problem of blockage when using the insertion part to suction out secretions. Attached Figure Description

[0011] Figure 1 is a schematic diagram of the structure of the insertion part disclosed in an embodiment of this application, and an enlarged schematic diagram of point A therein;

[0012] Figure 2 is a second schematic diagram of the structure of the insertion part disclosed in an embodiment of this application;

[0013] Figure 3 is a schematic diagram of the endoscope disclosed in the embodiment of this application, and an enlarged schematic diagram of point B therein.

[0014] Explanation of reference numerals in the attached figures:

[0015] 100. Insertion part; 101. Protruding structure; 110. Working channel; 120. First suction hole; 130. Insertion part body; 140. Front end seat; 150. Threading channel; 160. Second suction hole; 170. First tube section; 180. Second tube section; 190. Camera module; 200. Operating handle. Detailed Implementation

[0016] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0017] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0018] The endoscope and its insertion part provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0019] In the various embodiments of this application, "proximal end" and "distal end" refer to the position of the endoscope and its components relative to the user in the usage environment. The end closer to the user is designated as the "proximal end", and the end farther from the user is designated as the "distal end".

[0020] The inventors discovered that the current suction hole is located on the outer peripheral surface of the distal end of the insertion part. During suctioning, if the negative pressure is too high, the insertion part may move towards the human tissue under the action of negative pressure, thus adhering to the human tissue. That is, the part of the insertion part with the suction hole is adhering to the human tissue, which may cause the human tissue to block the suction hole. Obviously, this will lead to blockage when suctioning secretions.

[0021] As shown in Figures 1 to 3, this application discloses an insertion part 100 of an endoscope. The insertion part 100 has a working channel 110, and a first suction hole 120 is provided on the outer peripheral surface of the distal end of the insertion part 100. The first suction hole 120 penetrates the side wall of the insertion part 100 and communicates with the working channel 110. Specifically, the insertion part 100 can be applied to a suction endoscope, in which case the working channel 110 serves as a suction channel; in addition, the insertion part 100 can also be applied to a bronchoscope, gastroscope, etc., in which case the working channel 110 serves as an instrument channel.

[0022] The outer peripheral surface of the distal end of the insertion portion 100 protrudes radially to form a protrusion structure 101. The first suction hole 120 is located on one side of the protrusion structure 101. For example, the first suction hole 120 is located on one side of the protrusion structure 101 along the radial direction of the insertion portion 100, or the first suction hole 120 may also be located on one side of the protrusion structure 101 along the axial direction of the insertion portion 100. The protrusion structure 101 extends radially beyond the first suction hole 120.

[0023] In this application, the outer peripheral surface of the distal end of the insertion part 100 is provided with a first suction hole 120, and the outer peripheral surface of the distal end of the insertion part 100 radially protrudes to form a protrusion structure 101. The protrusion structure 101 is located on one side of the first suction hole 120 and extends radially beyond the first suction hole 120. After the insertion part 100 of this application is inserted into the human body, even if a large negative pressure is applied to the first suction hole 120 to make the insertion part 100 move towards the direction of human tissue, the protrusion structure 101 will first come into contact with the human tissue, thereby separating the distal end of the insertion part 100 from the human tissue and forming a gap between the distal end of the insertion part 100 and the human tissue. That is, a gap is formed between the first suction hole 120 and the human tissue to prevent the part of the insertion part 100 with the first suction hole 120 from adhering to the human tissue, thereby reducing the risk of human tissue blocking the first suction hole 120 and solving the problem of blockage when using the insertion part 100 to suction out secretions.

[0024] In one optional embodiment, the protruding structure 101 and the first suction hole 120 are sequentially distributed along the axial direction of the insertion portion 100, and the protruding structure 101 is located on the far side of the first suction hole 120. In this embodiment, the protruding structure 101 is located on the far side of the first suction hole 120, which allows the protruding structure 101 to be closer to the distal end face of the insertion portion 100. The movement of the insertion portion 100 toward the human tissue is usually a swinging motion, that is, the insertion portion 100 swings around its distal end with its proximal end as the swing point. Therefore, during the swinging motion of the insertion portion 100 toward the human tissue, the portion of the insertion portion 100 closer to its distal end face will approach the human tissue first. Therefore, in this embodiment, by making the protruding structure 101 closer to the distal end face of the insertion portion 100, the protruding structure 101 can contact the human tissue first compared to the portion of the insertion portion 100 with the first suction hole 120, thereby more effectively separating the human tissue from the first suction hole 120. Of course, the protruding structure 101 can also be located near the first suction hole 120, and this application does not limit it in this way.

[0025] In one optional embodiment, the minimum distance between the protrusion 101 and the first suction hole 120 along the axial direction of the insertion portion 100 is 0~20mm. That is, the axial distance between the protrusion 101 and the first suction hole 120 is small, and they are close together. This makes the gap formed between the protrusion 101 and the first suction hole 120 and the human tissue larger, so the protrusion 101 can more effectively prevent the first suction hole 120 from contacting the human tissue. Moreover, the close proximity between the protrusion 101 and the first suction hole 120 can reduce the length of the tube segment of the insertion portion 100 located between the protrusion 101 and the first suction hole 120, thereby reducing the risk of the tube segment bending and deforming. Thus, even under high negative pressure, the tube segment will not bend and deform and move in the direction close to the human tissue, thereby preventing the first suction hole 120 from moving in the direction close to the human tissue. This keeps the first suction hole 120 stably separated from the human tissue, reducing the risk of the human tissue blocking the first suction hole 120. Of course, the minimum distance between the protruding structure 101 and the first suction hole 120 can also be greater than 20mm, and this application does not limit this.

[0026] In one alternative embodiment, the protrusion structure 101 extends circumferentially along the insertion portion 100, and the protrusion structure 101 has a closed annular structure in its own circumferential direction. In this way, when there are multiple first suction holes 120 and they are distributed at intervals along the circumferential direction of the insertion portion 100, the protrusion structure 101 can provide 360-degree isolation, ensuring that human tissue will not come into contact with the first suction holes 120 at any angle, thereby reducing the risk of human tissue clogging the first suction holes 120.

[0027] In one optional embodiment, the insertion part 100 includes an insertion part body 130 and a front end seat 140 for mounting the camera module 190. The proximal end of the front end seat 140 is sleeved on the outside of the distal end of the insertion part body 130, and the proximal end of the front end seat 140 forms a protrusion structure 101. Specifically, the camera module 190 can capture images of the distal end of the endoscope and display them to the operator in real time on a monitor, enabling doctors to obtain a clear view during endoscopic examinations or surgeries. Furthermore, the high-definition images provided by the camera module 190 allow doctors to more accurately identify and locate lesions, thereby improving the accuracy of diagnosis and treatment.

[0028] In this embodiment, the protruding structure 101 is formed by the front end seat 140 of the insertion part 100. This eliminates the need for additional protruding structures 101 on the outer periphery of the front end seat 140, simplifying the structure of the insertion part 100 and reducing its processing difficulty. Furthermore, the front end seat 140 not only provides a mounting base for the camera module 190 but also forms the protruding structure 101, achieving a dual-purpose design.

[0029] In one optional embodiment, the height of the protrusion structure 101 extending radially out of the outer peripheral surface of the distal end of the insertion portion 100 is D1, and the minimum distance between the protrusion structure 101 and the first suction hole 120 along the axial direction of the insertion portion 100 is L1, where D1:L1 = 0.04~0.06.

[0030] In this embodiment, D1:L1 = 0.04~0.06, which keeps the size of D1 within a suitable range. If the ratio of D1:L1 is less than 0.04, the height of the protrusion 101 is smaller, and the gap separating the first suction hole 120 from the human tissue using the protrusion 101 is also smaller, which reduces the anti-clogging effect. If the ratio of D1:L1 is greater than 0.06, the height of the protrusion 101 is larger, which increases the difficulty of inserting the insertion part 100 into the human body. Therefore, in this embodiment, the ratio of D1:L1 is controlled between 0.04 and 0.06, which can ensure the anti-clogging effect while facilitating the insertion of the insertion part 100 into the human body.

[0031] And / or, in an optional embodiment, the length of the first suction hole 120 along the axial direction of the insertion portion 100 is L2, and the length of the first suction hole 120 along the first radial direction of the insertion portion 100 is L3, where L2 > L3, and the first radial direction is perpendicular to the axial direction of the first suction hole 120. In this embodiment, the axial length of the first suction hole 120 is greater than the radial length of the first suction hole 120. Compared with embodiments where L2 equals L3, this embodiment can increase the flow area of ​​the first suction hole 120, thereby enabling more efficient removal of foreign objects. Furthermore, since the circumference of the insertion portion 100 is small, this embodiment sets the length of the first suction hole 120 in the first radial direction to be small, thus preventing the first suction hole 120 from extending too far along the circumference of the insertion portion 100 and reducing the structural strength of the insertion portion 100. Of course, L2 can also be less than or equal to L3, and this application does not limit this.

[0032] In an optional embodiment, the insertion part 100 is further provided with a wire-passing channel 150, which is separated from the working channel 110. That is, the wire-passing channel 150 and the working channel 110 are not connected, thus isolating the wire harness from the waste liquid and preventing corrosion and short circuits. Optionally, the wire-passing channel 150 and the working channel 110 can be separated by a partition, for example, by setting a partition in a large channel to divide the channel into two, forming the wire-passing channel 150 and the working channel 110. In this case, the wire-passing channel 150 and the working channel 110 are radially distributed sequentially. Alternatively, the wire-passing channel 150 can be formed using a wire-passing tube, in which case the wire-passing channel 150 and the working channel 110 can be radially distributed sequentially, or the wire-passing channel 150 can be located within the working channel 110.

[0033] And / or, in an optional embodiment, the distal end face of the insertion portion 100 is provided with a second suction hole 160, the second suction hole 160 penetrating the distal end wall of the insertion portion 100 and communicating with the working channel 110. In this embodiment, the distal end face of the insertion portion 100 is provided with a second suction hole 160, so that the distal end of the insertion portion 100 includes two suction holes, thereby increasing the suction area at the distal end of the working channel 110 and thus improving the suction efficiency.

[0034] In an optional embodiment, the insertion part 100 is applied to a suction endoscope. The insertion part 100 includes a first tube segment 170 and a second tube segment 180. The proximal end of the second tube segment 180 is connected to the distal end of the first tube segment 170. The second tube segment 180 is bent relative to the first tube segment 170. A first suction hole 120 is provided in the second tube segment 180.

[0035] In this embodiment, the insertion part 100 includes a first tube segment 170 and a second tube segment 180 that are bent relative to each other. By controlling the rotation of the insertion part 100, the orientation of the distal end of the second tube segment 180 can be adjusted, which facilitates the smooth entry of the distal end of the second tube segment 180 into the natural cavities of the human body, such as the subglottic trachea, without the need to provide an active bending section in the insertion part 100 or a traction mechanism to drive the bending of the active bending section in the suction endoscope handle containing the insertion part 100. This simplifies the structure of the insertion part 100 and the suction endoscope handle; and the bending of the second tube segment 180 relative to the first tube segment 170 makes it easier to reach areas where sputum accumulates, thereby improving suction efficiency.

[0036] In one optional embodiment, the plane in which the axis of the first pipe segment 170 and the axis of the second pipe segment 180 are located is the first plane, and the plane perpendicular to the first plane is the second plane. The axis of the second pipe segment 180 is located in the second plane, and the first suction hole 120 is located on one side of the second plane.

[0037] In this embodiment, the plane in which the bending direction between the first pipe segment 170 and the second pipe segment 180 is located is the first plane, the direction perpendicular to the first plane is the first radial direction, and the direction perpendicular to the first radial direction is the second radial direction. The first suction hole 120 is located on one side of the second pipe segment 180 along the second radial direction. Therefore, the protrusion structure 101 is also located at least partially on one side of the second pipe segment 180 along the second radial direction. When the first suction hole 120 is located on this side, the bend between the first pipe segment 170 and the second pipe segment 180 can separate the first suction hole 120 from the human tissue to a certain extent. Therefore, setting the protrusion structure 101 on this side can further prevent the first suction hole 120 from adhering to the human tissue, thereby further preventing the first suction hole 120 from being blocked.

[0038] This application also discloses an endoscope including the insertion portion 100 described in any of the above embodiments, thus enabling the endoscope to possess the beneficial effects of the insertion portion 100, which will not be elaborated further here. Optionally, the endoscope may further include an operating handle 200, the distal end of which is connected to the proximal end of the insertion portion 100. The endoscope referred to in this application embodiment may be a bronchoscope, pyeloscope, esophagoscope, gastroscope, colonoscope, otoscope, rhinoscope, oral endoscope, laryngoscope, colposcope, laparoscope, arthroscope, etc., and this application embodiment does not specifically limit the type of endoscope.

[0039] The foregoing embodiments of this application focus on describing the differences between various embodiments. As long as the different optimization features between embodiments are not contradictory, they can be combined to form better embodiments. For the sake of brevity, these differences will not be elaborated upon here. The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art, under the guidance of this application, can make many modifications without departing from the spirit and scope of the claims, all of which fall within the protection scope of this application.

Claims

1. An insertion portion of an endoscope, characterized in that, The insertion part (100) is provided with a working channel (110), and the outer peripheral surface of the distal end of the insertion part (100) is provided with a first suction hole (120). The first suction hole (120) penetrates the side wall of the insertion part (100) and is connected to the working channel (110). The outer peripheral surface of the distal end of the insertion part (100) protrudes radially to form a protrusion structure (101), the first suction hole (120) is located on one side of the protrusion structure (101), and the protrusion structure (101) extends radially beyond the first suction hole (120).

2. The insertion part according to claim 1, characterized in that, The protruding structure (101) and the first suction hole (120) are distributed sequentially along the axial direction of the insertion part (100), and the protruding structure (101) is located on the far side of the first suction hole (120).

3. The insertion part according to claim 2, characterized in that, Along the axial direction of the insertion portion (100), the minimum distance between the protrusion structure (101) and the first suction hole (120) is 0~20mm.

4. The insertion part according to claim 2, characterized in that, The protruding structure (101) extends circumferentially along the insertion portion (100), and the protruding structure (101) has a closed annular structure in its own circumferential direction.

5. The insertion part according to claim 4, characterized in that, The insertion part (100) includes an insertion part body (130) and a front end seat (140) for mounting a camera module (190). The proximal end of the front end seat (140) is sleeved on the outside of the distal end of the insertion part body (130), and the proximal end of the front end seat (140) forms the protrusion structure (101).

6. The insertion portion according to any one of claims 1 to 5, characterized in that, The height of the protrusion (101) extending radially out of the outer peripheral surface of the distal end of the insertion portion (100) is D1, and the minimum distance between the protrusion (101) and the first suction hole (120) along the axial direction of the insertion portion (100) is L1, where D1: L1 = 0.04~0.06; and / or, The length of the first suction hole (120) along the axial direction of the insertion part (100) is L2, and the length of the first suction hole (120) along the first radial direction of the insertion part (100) is L3, where L2 > L3, and the first radial direction is perpendicular to the axial direction of the first suction hole (120).

7. The insertion part according to claim 1, characterized in that, The insertion part (100) is further provided with a threading channel (150), which is separated from the working channel (110); and / or, The distal end face of the insertion part (100) is provided with a second suction hole (160), which penetrates the distal end wall of the insertion part (100) and is connected to the working channel (110).

8. The insertion part according to claim 1, characterized in that, The insertion part (100) is applied to a suction endoscope. The insertion part (100) includes a first tube segment (170) and a second tube segment (180). The proximal end of the second tube segment (180) is connected to the distal end of the first tube segment (170). The second tube segment (180) is bent relative to the first tube segment (170). The first suction hole (120) is provided in the second tube segment (180).

9. The insertion portion according to claim 8, characterized in that, The plane in which the axis of the first pipe segment (170) and the axis of the second pipe segment (180) are located is the first plane, and the plane perpendicular to the first plane is the second plane. The axis of the second pipe segment (180) is located in the second plane, and the first suction hole (120) is located on one side of the second plane.

10. An endoscope, characterized in that, Includes the insertion portion (100) as described in any one of claims 1 to 9.

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