Endoscope and insertion part thereof

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to an endoscope and an insertion part thereof. A working channel is arranged in the insertion part, a first suction hole is formed in the peripheral surface of the far end of the insertion part, and the first suction hole penetrates through the side wall of the insertion part and is communicated with the working channel; the peripheral face of the far end of the insertion part protrudes in the radial direction to form a protruding structure, the first suction hole is located in one side of the protruding structure, and the protruding structure exceeds the first suction hole in the radial direction. By means of the protruding structure, the gap can be formed between the first suction hole and the human tissue, the part, provided with the first suction hole, of the insertion part is prevented from being attached to the human tissue, the risk that the first suction hole is blocked by the human tissue is reduced, and the problem that blockage occurs when secretions are sucked out through the insertion part is solved.

Description

Technical Field

[0001] This application belongs to the technical field of medical devices, and particularly relates to an endoscope and its insertion part. Background Art

[0002] Suction operation is a routine operation in clinical practice. Suction usually refers to a method of sucking out the secretions in the respiratory tract through the oral cavity, nasal cavity, artificial airway, etc. to keep the respiratory tract unobstructed and prevent complications such as aspiration pneumonia, atelectasis, and asphyxia.

[0003] The current suction endoscope includes an insertion part. The outer peripheral surface of the distal end of the insertion part is provided with suction holes, and the secretions are sucked out through the suction holes and the suction channel inside the insertion part. However, when using the current suction endoscope to suck out the secretions in the human body, blockage often occurs. Utility Model Content

[0004] The purpose of this application is to provide an endoscope and its insertion part, which can reduce the risk of blockage when using endoscopes such as the current suction endoscope to suck out foreign objects in the human body.

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

[0006] In a first aspect, this application provides an insertion part of an endoscope. A working channel is provided inside the insertion part, and a first suction hole is provided on the outer peripheral surface of the distal end of the insertion part. The first suction hole penetrates the side wall of the insertion part and is connected to the working channel;

[0007] A convex structure is formed by radially protruding the outer peripheral surface of the distal end of the insertion part. The first suction hole is located on one side of the convex structure, and the convex structure radially protrudes beyond the first suction hole.

[0008] In a second aspect, this application provides an endoscope, including the above-mentioned insertion part.

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

[0010] In this application, a first suction hole is provided on the outer peripheral surface of the distal end of the insertion part, and a convex structure is formed by radially protruding the outer peripheral surface of the distal end of the insertion part. The convex structure radially protrudes beyond the first suction hole and is located on one side of the first suction hole. After inserting the insertion part of this application 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 close to the human tissue, the convex 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, preventing the part of the insertion part provided with the first suction hole from fitting with the human tissue, so as to reduce the risk of the human tissue blocking the first suction hole and solve the problem of blockage when using the insertion part to suck out secretions. Description of the Drawings

[0011] Figure 1 Structural schematic of the insertion part disclosed in the embodiments of the present application Figure 1 , and enlarged schematic diagram at position A therein;

[0012] Figure 2 Structural schematic of the insertion part disclosed in the embodiments of the present application Figure 2 ;

[0013] Figure 3 Structural schematic diagram of the endoscope disclosed in the embodiments of the present application, and enlarged schematic diagram at position B therein.

[0014] Explanation of reference numerals:

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

[0016] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application.

[0017] The terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. generally belong to the same category, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / ", generally represents an "or" relationship between the associated objects before and after.

[0018] Next, the endoscope and its insertion part provided in the embodiments of the present application will be described in detail in conjunction with the accompanying drawings through specific embodiments and their application scenarios.

[0019] In the embodiments of the present application, "proximal end" and "distal end" refer to the relative positions of the endoscope and its components to the user in the use environment. Among them, 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 found that the current suction holes are provided on the outer peripheral surface of the distal end of the insertion portion. During the sputum suction operation, if the negative pressure is too large, the insertion portion may move towards the human tissue under the action of the negative pressure, so as to fit with the human tissue, that is: the part of the insertion portion provided with the suction holes fits with the human tissue, which may block the suction holes with the human tissue. Obviously, this will cause blockage when sucking out the secretions.

[0021] As Figures 1 to 3 shown, an embodiment of the present application discloses an insertion portion 100 of an endoscope. A working channel 110 is provided in the insertion portion 100, and a first suction hole 120 is provided on the outer peripheral surface of the distal end of the insertion portion 100. The first suction hole 120 penetrates the side wall of the insertion portion 100 and is connected to the working channel 110. Specifically, the insertion portion 100 here can be applied to a sputum suction mirror, and at this time the working channel 110 is a sputum suction channel; in addition, the insertion portion 100 can also be applied to a bronchoscope, a gastroscope, etc., and at this time the working channel 110 can be an instrument channel.

[0022] A convex structure 101 protrudes radially from the outer peripheral surface of the distal end of the insertion portion 100. The first suction hole 120 is located on one side of the convex structure 101. For example, the first suction hole 120 is located on one side of the convex structure 101 along the radial direction of the insertion portion 100, or the first suction hole 120 can also be located on one side of the convex structure 101 along the axial direction of the insertion portion 100. The convex structure 101 protrudes radially beyond the first suction hole 120.

[0023] In the present application, a first suction hole 120 is provided on the outer peripheral surface of the distal end of the insertion portion 100, and a convex structure 101 protrudes radially from the outer peripheral surface of the distal end of the insertion portion 100. The convex structure 101 is located on one side of the first suction hole 120, and the convex structure 101 protrudes radially beyond the first suction hole 120. After the insertion portion 100 of the present 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 portion 100 move towards the human tissue, the convex structure 101 will first contact the human tissue, thereby separating the distal end of the insertion portion 100 from the human tissue and forming a gap between the distal end of the insertion portion 100 and the human tissue, that is: a gap is formed between the first suction hole 120 and the human tissue, preventing the part of the insertion portion 100 provided with the first suction hole 120 from fitting with the human tissue, so as to reduce the risk of the human tissue blocking the first suction hole 120 and solve the problem of blockage when sucking out the secretions by using the insertion portion 100.

[0024] In an alternative embodiment, the convex structure 101 and the first suction hole 120 are sequentially distributed along the axial direction of the insertion portion 100, and the convex structure 101 is located on the distal side of the first suction hole 120. In this embodiment, the convex structure 101 is provided on the distal side of the first suction hole 120, which can make the convex structure 101 closer to the distal end surface of the insertion portion 100. The movement form of the insertion portion 100 towards the human tissue is usually swinging, that is: the proximal end of the insertion portion 100 is used as the swing point, and the distal end of the insertion portion 100 swings around this swing point. Therefore, during the swinging process of the insertion portion 100 towards the direction close to the human tissue, the part of the insertion portion 100 close to its own distal end surface will first approach the human tissue. Therefore, in this embodiment, making the convex structure 101 closer to the distal end surface of the insertion portion 100 can make the convex structure 101 contact the human tissue first compared with the part of the insertion portion 100 provided with the first suction hole 120, so as to more effectively separate the human tissue from the first suction hole 120. Of course, the convex structure 101 can also be located on the proximal side of the first suction hole 120, and the present application does not limit this.

[0025] In an alternative embodiment, along the axial direction of the insertion portion 100, the minimum distance between the convex structure 101 and the first suction hole 120 is 0 - 20 mm. That is to say, the axial distance between the convex structure 101 and the first suction hole 120 is relatively small, and the two are relatively close to each other. In this way, the gap formed by the convex structure 101 between the first suction hole 120 and the human tissue is relatively large. In this way, the convex structure 101 can more effectively prevent the first suction hole 120 from contacting the human tissue; and the convex structure 101 and the first suction hole 120 are relatively close to each other, which can reduce the length of the pipe section of the insertion portion 100 located between the convex structure 101 and the first suction hole 120, thereby reducing the risk of bending deformation of this pipe section. In this way, even under the condition of relatively large negative pressure, this pipe section will not bend and deform and move along the direction close to the human tissue, and thus will not make the first suction hole 120 move along the direction close to the human tissue, so as to stably separate the first suction hole 120 from the human tissue to reduce the risk of the human tissue blocking the first suction hole 120. Of course, the minimum distance between the convex structure 101 and the first suction hole 120 can also be greater than 20 mm, and the present application does not limit this.

[0026] In an alternative embodiment, the convex structure 101 extends along the circumferential direction of the insertion portion 100, and the convex structure 101 is a closed annular structure in its own circumferential direction. In this way, when the number of the first suction holes 120 is multiple and they are distributed at intervals along the circumferential direction of the insertion portion 100, the convex structure 101 can provide 360 - degree isolation to ensure that the human tissue will not contact the first suction holes 120 at any angle, thereby reducing the risk of the human tissue blocking each first suction hole 120.

[0027] In an optional embodiment, 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 a protruding structure 101. Specifically, the camera module 190 here can capture the image of the distal end of the endoscope and display it to the operator in real time through a display, so that the doctor can obtain a clear view when performing endoscopic examination or surgery; and the doctor can more accurately identify and locate the diseased tissue through the high-definition image provided by the camera module 190, thereby improving the accuracy of diagnosis and treatment.

[0028] This embodiment uses the front end seat 140 of the insertion part 100 to form the protruding structure 101, so there is no need to set other protruding structures 101 on the outer peripheral surface of the front end seat 140, which can simplify the structure of the insertion part 100 and reduce the difficulty of processing the insertion part 100. The front end seat 140 here can not only provide a mounting base for the camera module 190, but also be used to form the protruding structure 101, thereby achieving the purpose of dual use of one object.

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

[0030] In this embodiment, D1:L1=0.04~0.06, which can make the size of D1 within a suitable range. If the ratio of D1:L1 is less than 0.04, the height of the protrusion structure 101 is small, and the gap between the first suction hole 120 and the human tissue by the protrusion structure 101 is also small, which will reduce the anti-blocking effect. If the ratio of D1:L1 is greater than 0.06, the height of the protrusion structure 101 is large, which will increase the difficulty of inserting the insertion part 100 into the human body. Therefore, in this embodiment, the ratio of D1:L1 is controlled within 0.04~0.06, which can not only ensure the anti-blocking effect, but also facilitate the insertion of the insertion part 100 into the human body.

[0031] And / or, in an alternative embodiment, the length dimension of the first suction hole 120 along the axial direction of the insertion portion 100 is L2, and the length dimension of the first suction hole 120 along the first radial direction of the insertion portion 100 is L3, where L2 > L3. Herein, 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 the embodiment where L2 is equal to L3, this embodiment can increase the flow-through area of the first suction hole 120, thereby being able to suck out foreign matters more efficiently. Moreover, since the circumference of the insertion portion 100 in the circumferential direction is relatively small, in this embodiment, the length dimension of the first suction hole 120 in the first radial direction is set to be relatively small, so as to prevent the first suction hole 120 from extending too long in the circumferential direction 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 the present application does not limit this.

[0032] In an alternative embodiment, a wire threading channel 150 is further provided inside the insertion portion 100. The wire threading channel 150 is separated from the working channel 110, that is to say, the wire threading channel 150 and the working channel 110 are not connected to each other. In this way, the wire harness can be separated from the waste liquid, which can prevent the wire harness from being corroded or short-circuited. Optionally, the wire threading channel 150 and the working channel 110 can be separated by a partition. For example, a partition is provided in a large hole, so as to divide the hole into two parts to form the wire threading channel 150 and the working channel 110. At this time, the wire threading channel 150 and the working channel 110 are distributed in the radial direction in sequence; or a wire threading pipe can be used to form the wire threading channel 150. At this time, the wire threading channel 150 can be distributed in the radial direction in sequence with the working channel 110, or the wire threading channel 150 can be arranged inside the working channel 110.

[0033] And / or, in an alternative embodiment, a second suction hole 160 is provided on the distal end surface of the insertion portion 100. The second suction hole 160 penetrates through the distal end wall of the insertion portion 100 and is connected to the working channel 110. In this embodiment, the second suction hole 160 is provided on the distal end surface of the insertion portion 100, 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 improving the suction efficiency.

[0034] In an alternative embodiment, the insertion portion 100 is applied to a sputum suction mirror. The insertion portion 100 includes a first pipe segment 170 and a second pipe segment 180. The proximal end of the second pipe segment 180 is connected to the distal end of the first pipe segment 170. The second pipe segment 180 is bent relative to the first pipe segment 170, and the first suction hole 120 is provided on the second pipe segment 180.

[0035] In this embodiment, the insertion portion 100 includes a first pipe section 170 and a second pipe section 180 that are bent relative to each other. By controlling the rotation of the insertion portion 100, the orientation of the distal end of the second pipe section 180 can be adjusted. This facilitates the smooth entry of the distal end of the second pipe section 180 into the natural cavity in the human body, such as the subglottic trachea, without the need to provide an active bending section in the insertion portion 100 and without the need to provide a traction mechanism for driving the active bending section to bend in the suction mirror handle containing the insertion portion 100. This can simplify the structures of the insertion portion 100 and the suction mirror handle. Moreover, the bending of the second pipe section 180 relative to the first pipe section 170 makes it easier to reach the area where sputum accumulates, thereby improving the suction efficiency.

[0036] In an alternative embodiment, the plane in which the axes of the first pipe section 170 and the second pipe section 180 lie together is the first plane, and the plane perpendicular to the first plane is the second plane. The axis of the second pipe section 180 lies 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 section 170 and the second pipe section 180 lies 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 section 180 along the second radial direction. Therefore, at least part of the convex structure 101 is also located on one side of the second pipe section 180 along the second radial direction. When the first suction hole 120 is located on this side, the bending portion between the first pipe section 170 and the second pipe section 180 can separate the first suction hole 120 from human tissues to a certain extent. Therefore, setting the convex structure 101 on this side can further prevent the first suction hole 120 from adhering to human tissues, thereby further preventing the blockage of the first suction hole 120.

[0038] The embodiment of the present application also discloses an endoscope, including the insertion portion 100 described in any of the above embodiments. Thus, the endoscope has the beneficial effects of the above insertion portion 100, which will not be elaborated here. Optionally, the endoscope may further include an operation handle 200, and the distal end of the operation handle 200 is connected to the proximal end of the insertion portion 100. The endoscope referred to in the embodiment of the present application can be a bronchoscope, a pyeloscope, an esophagoscope, a gastroscope, a colonoscope, an otoscope, a nasal speculum, an oral mirror, a laryngoscope, a vaginoscope, a laparoscope, an arthroscope, etc. The embodiment of the present application does not make specific limitations on the types of endoscopes.

[0039] In the above embodiments of the present application, the differences between the various embodiments are mainly described. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. For the sake of brevity of the text, it will not be elaborated here. The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific implementation manners. The above specific implementation manners are merely illustrative rather than restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the spirit of the present application and the scope protected by the claims, and all of them fall within the protection scope of the present application.

Claims

1. An insertion section of an endoscope, characterized in that, A working channel (110) is provided inside the insertion part (100). A first suction hole (120) is provided on the outer peripheral surface at the distal end of the insertion part (100). The first suction hole (120) penetrates through the side wall of the insertion part (100) and communicates with the working channel (110). A convex structure (101) radially protrudes on the outer peripheral surface at the distal end of the insertion part (100). The first suction hole (120) is located on one side of the convex structure (101), and the convex structure (101) radially protrudes beyond the first suction hole (120).

2. The insertion part according to claim 1, characterized in that, The convex structure (101) and the first suction hole (120) are sequentially distributed along the axial direction of the insertion part (100), and the convex structure (101) is located on the distal 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 part (100), the minimum distance between the convex structure (101) and the first suction hole (120) is 0 - 20 mm.

4. The insertion part according to claim 2, characterized in that, The convex structure (101) extends along the circumferential direction of the insertion part (100), and the convex structure (101) is 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 main body (130) and a front end seat (140) for installing a camera module (190). The proximal end of the front end seat (140) is sleeved outside the distal end of the insertion part main body (130), and the proximal end of the front end seat (140) forms the convex structure (101).

6. The insertion part according to any one of claims 1 to 5, characterized in that, The height D1 of the convex structure (101) radially protruding from the outer peripheral surface at the distal end of the insertion part (100), and the minimum distance L1 between the convex structure (101) and the first suction hole (120) along the axial direction of the insertion part (100), D1:L1 = 0.04 - 0.06; and / or, The length dimension L2 of the first suction hole (120) along the axial direction of the insertion part (100), and the length dimension L3 of the first suction hole (120) along the first radial direction of the insertion part (100), L2 > L3, where 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 A wire threading channel (150) is further provided inside the insertion part (100), and the wire threading channel (150) is separated from the working channel (110); and / or, A second suction hole (160) is provided on the distal end surface of the insertion part (100). The second suction hole (160) penetrates through the distal end wall of the insertion part (100) and communicates with the working channel (110).

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

9. The insertion part according to claim 8, characterized in that, The plane in which the axis of the first pipe section (170) and the axis of the second pipe section (180) are located together is the first plane, and the plane perpendicular to the first plane is the second plane. The axis of the second pipe section (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, Comprising the insertion part (100) according to any one of claims 1 to 9.

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