Middle ear ventilation and drainage structure

Abstract

The utility model discloses a middle ear ventilation drainage structure, which belongs to the technical field of medical instruments and comprises a guide tube and a drainage component, the drainage component is mounted at the end of the guide tube, a guide channel and a guide port are formed in the guide tube, and a first drainage groove and a liquid inlet are formed in the drainage component. The liquid inlet, the first drainage groove, the flow guide opening and the flow guide channel are sequentially communicated; the cross section of the first drainage groove is in an inverted trapezoid shape. The bottom and the side wall of the inverted trapezoidal first drainage groove are in surface contact with the soft tissue, so that the stability of the middle ear ventilation drainage structure in the middle ear is ensured; the side wall of the inverted trapezoidal first drainage groove is inclined and is also attached to the soft tissue in the middle ear, so that the soft tissue is prevented from being damaged by the base angle of the drainage assembly. Therefore, in a space with the same height and width, compared with an existing arc-shaped drainage groove, the inverted-trapezoid-shaped first drainage groove can gather more middle ear effusion, and the problem that the amount of effusion of arc-shaped grooves in the two wings of an existing middle ear ventilation drainage tube is small is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical instruments, in particular to a middle ear ventilation and drainage structure. Background Art

[0002] The middle ear ventilation and drainage structure is an otological implant. Its main function is: when a myringotomy is performed, the middle ear ventilation and drainage structure is inserted into the ear, thereby providing a channel for air flow between the external auditory canal and the middle ear. This unobstructed channel can drain the fluid in the middle ear due to acute or chronic otitis media into the external auditory canal. In addition, it can also balance the air pressure between the outer ear and the middle ear, and continuously drain the fluid in the ear to prevent fluid accumulation in the middle ear.

[0003] There are many types of middle ear ventilation and drainage structures on the market, mainly T-shaped, oblique-mouthed, dumbbell-shaped, I-shaped, etc. Among them, the T-tube is the most widely used. The material of the T-tube is medical silicone rubber, and the main body of the T-tube is a hollow cylindrical tube. One end of the main body is connected to two wings, and the cross-section of the two wings is a semicircular groove. When in use, the two wings of the T-tube are implanted into the middle ear through the surgically cut eardrum hole and attached to the inner side of the eardrum, and the main body of the T-tube is placed in the external auditory canal outside the eardrum. However, the two wings of the middle ear ventilation and drainage tube are both semicircular grooves, and the volume of the effusion is relatively small; therefore, the existing middle ear ventilation and drainage tube still has room for improvement. Utility Model Content

[0004] The utility model aims to improve the problem that the amount of liquid accumulation in the semicircular grooves on the two wings of the existing middle ear ventilation and drainage tube is small, and provides a middle ear ventilation and drainage structure.

[0005] The technical solutions to achieve the above objectives include the following:

[0006] A middle ear ventilation drainage structure, comprising a drainage tube and a drainage assembly, wherein the drainage assembly is installed at the end of the drainage tube, a drainage channel and a drainage port are formed in the drainage tube, a first drainage groove and a liquid inlet are formed in the drainage assembly, and the liquid inlet, the first drainage groove, the drainage port, and the drainage channel are connected in sequence;

[0007] Wherein, the cross section of the first drainage groove is in an inverted trapezoidal shape.

[0008] In one embodiment, the depth of the first drainage groove gradually increases in the direction from the liquid inlet to the guide port.

[0009] In one embodiment, a second drainage groove is provided at the bottom of the drainage component, the bottom of the second drainage groove is sloped, the highest point of the second drainage groove is close to the liquid inlet, and the lowest point of the second drainage groove is close to the guide port; the second drainage groove is located above the first drainage groove and is connected to the first drainage groove.

[0010] In one embodiment, the opening of the second drainage groove gradually increases in the direction from the liquid inlet to the guide port.

[0011] In one embodiment, the bottom wall of the second drainage groove is an arc-shaped slope, and the cross-section of the second drainage groove is a crescent shape.

[0012] In one embodiment, the drainage assembly includes a first side plate, a second side plate, a third side plate, a fourth side plate, and two bottom plates, the first side plate and the third side plate are respectively mounted on both sides of one of the bottom plates, the second side plate and the fourth side plate are respectively mounted on both sides of the other bottom plate, the first side plate is arranged opposite to the third side plate, and the second side plate is arranged opposite to the fourth side plate; the two bottom plates are respectively mounted on both sides of the drainage pipe and are arranged close to the drainage port;

[0013] A first drainage groove is formed between the inner sides of the first side plate, the second side plate, the third side plate, the fourth side plate, and the upper end surfaces of the two bottom plates.

[0014] In one embodiment, the tops of the first side plate, the second side plate, the third side plate, and the fourth side plate are arc-shaped.

[0015] In one embodiment, the tops of the first side panel, the second side panel, the third side panel, and the fourth side panel are bent.

[0016] In one embodiment, there are avoidance gaps between the first side plate and the second side plate, and between the third side plate and the fourth side plate, and there is an avoidance groove on one side of the bottom plate close to the outer wall of the guide tube.

[0017] In one embodiment, the guide tube and the drainage assembly form a T-shaped structure.

[0018] The technical solution provided by the utility model has the following advantages and effects:

[0019] The first drainage groove and the liquid inlet are formed in the drainage component. The effusion generated in the middle ear flows into the first drainage groove through the liquid inlet for accumulation. Since the liquid inlet, the first drainage groove, the diversion port, and the diversion channel are connected in sequence, the effusion flows to the diversion port after accumulating to a certain volume, and is discharged from the diversion channel to the outside of the middle ear. Moreover, the cross-section of the first drainage groove is T-shaped, and the bottom and side walls of the inverted trapezoidal first drainage groove are in surface contact with the soft tissue, ensuring the stability of the middle ear ventilation and drainage structure in the middle ear. The side walls of the inverted trapezoidal first drainage groove are inclined, which also fits the soft tissue in the middle ear, avoiding the bottom angle of the drainage component from damaging the soft tissue. Therefore, without affecting the stability of the middle ear ventilation and drainage structure and without damaging the soft tissue, in a space of the same height and width, compared with the existing arc-shaped drainage groove, the inverted trapezoidal first drainage groove can gather more middle ear effusion, improving the problem of the small amount of effusion in the arc-shaped grooves on the two wings of the existing middle ear ventilation and drainage tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings herein show specific examples of the technical solutions described in the present utility model, and together with the specific implementation methods constitute a part of the specification, and are used to explain the technical solutions, principles and effects of the present utility model.

[0021] Unless otherwise specified or defined, the same reference numerals in different drawings represent the same or similar technical features, and the same or similar technical features may also be represented by different reference numerals.

[0022] Figure 1 This is a schematic diagram of the structure of the drainage structure in one embodiment of the utility model. Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the structure of the drainage structure in one embodiment of the utility model. Figure 2 ;

[0024] Figure 3 It is a side view of the drainage structure in one embodiment of the utility model;

[0025] Figure 4 is a cross-sectional view of a drainage structure in one embodiment of the utility model;

[0026] Figure 5 It is a schematic diagram of a drainage structure in another embodiment of the utility model;

[0027] Description of reference numerals:

[0028] 100. drainage structure; 10. drainage pipe; 11. drainage port; 12. drainage channel; 20. drainage assembly; 21. first side plate; 22. second side plate; 23. third side plate; 24. fourth side plate; 25. bottom plate; 26. first drainage groove; 27. second drainage groove; 28. liquid inlet; 30. avoidance groove; 40. avoidance gap. DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of the present invention, specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings.

[0030] Unless otherwise specified or defined, the "first, second..." used in this article is merely used to distinguish names and does not represent a specific quantity or order.

[0031] Unless specifically stated or defined otherwise, the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] It should be noted that when a component is considered to be "fixed to" another component, it can be directly fixed to the other component or there can be a central component; when an component is considered to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time; when an component is considered to be "installed on" another component, it can be directly installed on the other component or there can be a central component at the same time. When an component is considered to be "set on" another component, it can be directly set on the other component or there can be a central component at the same time.

[0033] like Figures 1 to 3As shown, a middle ear ventilation and drainage structure 100 includes a guide tube 10 and a drainage component 20, wherein the drainage component 20 is installed at the end of the guide tube 10, wherein a guide channel 12 and a guide port 11 are formed in the guide tube 10, wherein a first drainage groove 26 and a liquid inlet 28 are formed in the drainage component 20, wherein the liquid inlet 28, the first drainage groove 26, the guide port 11, and the guide channel 12 are connected in sequence; wherein the cross section of the first drainage groove 26 is in the shape of an inverted trapezoid. A first drainage groove 26 and a liquid inlet 28 are formed in the drainage component 20, and the accumulated fluid in the middle ear flows into the first drainage groove 26 through the liquid inlet 28 for accumulation. Since the liquid inlet 28, the first drainage groove 26, the guide port 11, and the guide channel 12 are connected in sequence, the accumulated fluid flows to the guide port 11 after accumulating to a certain volume, and is discharged to the outside of the middle ear from the guide channel 12; moreover, the cross-section of the first drainage groove 26 is T-shaped, and the bottom and side walls of the inverted trapezoidal first drainage groove 26 are in surface contact with the soft tissue, thereby ensuring the stability of the middle ear ventilation and drainage structure 100 in the middle ear; the side walls of the inverted trapezoidal first drainage groove 26 are inclined, which also fits the soft tissue in the middle ear, thereby preventing the bottom angle of the drainage component 20 from damaging the soft tissue. Therefore, without affecting the stability of the middle ear ventilation and drainage structure 100 and without damaging the soft tissue, in a space of the same height and width, the inverted trapezoidal first drainage groove 26 can collect more middle ear effusion compared to the existing arc-shaped drainage groove, thereby improving the problem that the amount of effusion in the arc-shaped grooves on the two wings of the existing middle ear ventilation and drainage tube is relatively small. In this embodiment, when the amount of effusion in the first drainage groove 26 increases, the side wall of the first drainage groove 26 will inevitably expand outward relative to the arc-shaped groove, but as long as the side wall of the first drainage groove 26 is inclined and the bottom angle of the first drainage groove 26 is obtuse, it is possible to avoid sharp chamfers that damage soft tissue.

[0034] like Figure 1 and Figure 4 As shown, in the direction from the liquid inlet 28 to the guide port 11, the depth of the first drainage groove 26 gradually increases. The first drainage groove 26 is configured in this way, so that the opening contact surface of the first drainage groove 26 near the liquid inlet 28 is larger, and its contact range is wider, and the accumulated liquid in the liquid inlet 28 is easier to enter the first drainage groove 26; and the end of the first drainage groove 26 near the guide port 11 has a certain depth for accumulating liquid, so that the accumulated liquid in the middle ear is discharged from the first drainage groove 26 to the guide port 11, and the drainage structure 100 further discharges the accumulated liquid in the middle ear.

[0035] like Figure 1 , Figure 2 , Figure 3As shown, a second drainage groove 27 is provided at the bottom of the drainage component 20, and the bottom of the second drainage groove 27 is sloped, the highest point of the second drainage groove 27 is close to the liquid inlet 28, and the lowest point of the second drainage groove 27 is close to the guide port 11; the second drainage groove 27 is located above the first drainage groove 26 and communicates with the first drainage groove 26. By providing the second drainage groove 27 at the bottom of the drainage component 20, the accumulated liquid in the first drainage groove 26 flows to the guide port 11 through the second drainage groove 27. Since the bottom of the second drainage groove 27 is sloped; the lowest point of the second drainage groove 27 is close to the guide port 11, according to the principle that liquid flows toward a lower place, the accumulated liquid in the second drainage groove 27 flows quickly to the guide port 11, thereby improving the efficiency of the flow of the accumulated liquid in the second drainage groove 27.

[0036] like Figure 1 and Figure 5 As shown, in the direction from the liquid inlet 28 to the guide port 11, the opening of the second drainage groove 27 gradually increases. In this embodiment, the first drainage groove 26 is mainly used to gather the accumulated liquid, and the second drainage groove 27 is used to guide the accumulated liquid to flow quickly to the guide port 11; the speed of the accumulated liquid from the liquid inlet 28 to the guide port 11 is continuously increased, and the opening of the second drainage groove 27 is also gradually increased, so that the flow rate of the accumulated liquid in the second drainage groove 27 close to the guide port 11 can be increased, and the efficiency of the flow of the accumulated liquid in the second drainage groove 27 can be further improved.

[0037] like Figure 1 As shown, the bottom wall of the second drainage groove 27 is an arc-shaped slope, and the cross section of the second drainage groove 27 is crescent-shaped. By setting the bottom wall of the second drainage groove 27 as an arc-shaped slope, it is difficult for droplets or stains to adhere to the bottom wall of the second drainage groove 27, thereby avoiding blockage in the second drainage groove 27.

[0038] like Figure 1 and Figure 2As shown, the drainage component 20 includes a first side plate 21, a second side plate 22, a third side plate 23, a fourth side plate 24, and two bottom plates 25. The first side plate 21 and the third side plate 23 are respectively installed on both sides of one of the bottom plates 25, and the second side plate 22 and the fourth side plate 24 are respectively installed on both sides of the other bottom plate 25. The first side plate 21 is arranged opposite to the third side plate 23, and the second side plate 22 is arranged opposite to the fourth side plate 24; the two bottom plates 25 are respectively installed on both sides of the guide pipe 1 and are arranged close to the guide port 11; a first drainage groove 26 is formed between the inner sides of the first side plate 21, the second side plate 22, the third side plate 23, the fourth side plate 24, and the upper end surfaces of the two bottom plates 25. A first drainage groove 26 is formed by using a first side plate 21, a second side plate 22, a third side plate 23, and a fourth side plate 24. The first side plate 21, the second side plate 22, the third side plate 23, the fourth side plate 24, and the bottom plate 25 are used to contact the soft tissue surface in the middle ear respectively, thereby increasing the contact area between the drainage structure 100 and the middle ear and improving the stability of the drainage structure 100 in the middle ear.

[0039] like Figure 4 As shown, the tops of the first side plate 21, the second side plate 22, the third side plate 23, and the fourth side plate 24 are in an arc shape. When the drainage structure 100 is implanted in the middle ear, the first side plate 21, the third side plate 22, and one of the bottom plates 25 are folded near the outer wall of one side of the drainage tube 10, and the second side plate 22, the third side plate 23, and the remaining bottom plate 25 are folded near the outer wall of the other side of the drainage tube 10. After the drainage port 11 passes through the opening of the middle ear, the first side plate 21, the third side plate 23, and one of the bottom plates 25 are restored to their original state, and the second side plate 22, the third side plate 23, and the remaining bottom plate 25 are restored to their original state. In this embodiment, the drainage structure 100 is made of silicone material, and the drainage structure 100 itself has a certain elasticity. The tops of the first side panel 21, the second side panel 22, the third side panel 23, and the fourth side panel 24 are set to be arc-shaped, so that after the first side panel 21, the second side panel 22, the third side panel 23, and the fourth side panel 24 are folded, the cross-section near the guide port 11 is circular, and the cross-sectional area is small, and the passability is better.

[0040] In order to make the drainage structure 100 easier to fold during implantation in the middle ear. Figure 1 As shown, there is an avoidance gap 40 between the first side plate 21 and the second side plate 22, and between the third side plate 23 and the fourth side plate 24, and the side of the bottom plate 25 close to the outer wall of the guide tube 10 has an avoidance groove 30. The avoidance gap 40 and the avoidance groove 30 make it easier to fold the first side plate 21, the second side plate 22, the third side plate 23, and the fourth side plate 24, and the first side plate 21, the second side plate 22, the third side plate 23, and the fourth side plate 24 can rotate in the circumferential direction without obstruction, thereby improving the implantation efficiency of the drainage structure 100.

[0041] like Figure 4 As shown, the drainage tube 10 and the drainage assembly 20 form a T-shaped structure. After the T-shaped drainage structure 100 is implanted in the middle ear, its two wings overlap the soft tissues on both sides of the opening, thereby improving the stability of the drainage mechanism 100 in the middle ear.

[0042] Embodiment 2

[0043] like Figure 5 As shown, the tops of the first side plate 21, the second side plate 22, the third side plate 23, and the fourth side plate 24 are bent. In this way, the end of the first drainage groove 26 close to the liquid inlet 28 can be set lower, and the position close to the guide port 11 can be set higher, so that the accumulated liquid near the drainage structure 100 can more easily enter the liquid inlet 28, and the accumulated liquid can also more easily flow into the first drainage groove 26 through the liquid inlet 28 and be discharged from the guide port 11.

[0044] When quoting drawing descriptions, new features that appear are described; in order to avoid repeated quotations of drawings resulting in less concise descriptions, features that have been described clearly will not be quoted in the drawings one by one.

[0045] The purpose of the above embodiments is to exemplarily reproduce and deduce the technical solution of the utility model, and to fully describe the technical solution, purpose and effect of the utility model. Its purpose is to make the public understand the disclosed content of the utility model more thoroughly and comprehensively, and it does not limit the protection scope of the utility model.

[0046] The above embodiments are not exhaustive enumerations based on the present invention, and there may be multiple other implementations not listed. Any replacement and improvement made without violating the concept of the present invention shall fall within the protection scope of the present invention.

Claims

1. A middle ear ventilation and drainage structure, characterized in that: It comprises a flow guide tube and a flow guide assembly, wherein the flow guide assembly is installed at the end of the flow guide tube, a flow guide channel and a flow guide port are formed in the flow guide tube, a first flow guide groove and a liquid inlet are formed in the flow guide assembly, and the liquid inlet, the first flow guide groove, the flow guide port and the flow guide channel are connected in sequence; Wherein, the cross section of the first drainage groove is in an inverted trapezoidal shape.

2. The drainage structure according to claim 1, characterized in that: In the direction from the liquid inlet to the guide port, the depth of the first drainage groove gradually increases.

3. The drainage structure according to claim 1, characterized in that: A second drainage groove is provided at the bottom of the drainage component, and the bottom of the second drainage groove is sloped. The highest point of the second drainage groove is close to the liquid inlet, and the lowest point of the second drainage groove is close to the guide port; the second drainage groove is located above the first drainage groove and is connected to the first drainage groove.

4. The drainage structure according to claim 3, characterized in that: In the direction from the liquid inlet to the guide port, the opening of the second drainage groove gradually increases.

5. The drainage structure according to claim 3, characterized in that: The bottom wall of the second drainage groove is an arc-shaped slope, and the cross-section of the second drainage groove is a crescent shape.

6. The drainage structure according to any one of claims 1 to 5, characterized in that: The drainage assembly includes a first side plate, a second side plate, a third side plate, a fourth side plate, and two bottom plates. The first side plate and the third side plate are respectively installed on both sides of one of the bottom plates, and the second side plate and the fourth side plate are respectively installed on both sides of the other bottom plate. The first side plate is arranged opposite to the third side plate, and the second side plate is arranged opposite to the fourth side plate. The two bottom plates are respectively installed on both sides of the drainage pipe and are arranged close to the drainage port. A first drainage groove is formed between the inner sides of the first side plate, the second side plate, the third side plate, the fourth side plate, and the upper end surfaces of the two bottom plates.

7. The drainage structure according to claim 6, characterized in that: The tops of the first side plate, the second side plate, the third side plate and the fourth side plate are in an arc shape.

8. The drainage structure according to claim 6, characterized in that: The tops of the first side plate, the second side plate, the third side plate and the fourth side plate are bent.

9. The drainage structure according to claim 6, characterized in that: There are avoidance gaps between the first side plate and the second side plate, and between the third side plate and the fourth side plate, and there is an avoidance groove on one side of the bottom plate close to the outer wall of the guide pipe.

10. The drainage structure according to any one of claims 1 to 5, characterized in that: The guide tube and the drainage assembly form a T-shaped structure.

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