CN221751120U

CN221751120U - Middle ear ventilation structure

Info

Publication number: CN221751120U
Application number: CN202322896601.2U
Authority: CN
Inventors: 唐文兵; 刘小敏; 江广理; 郭淑儿; 郭绪欣
Original assignee: Guangzhou Man Xiang Pharmaceutical Co ltd
Current assignee: Guangzhou Man Xiang Pharmaceutical Co ltd
Priority date: 2023-10-26
Filing date: 2023-10-26
Publication date: 2024-09-24
Anticipated expiration: 2033-10-26

Abstract

The utility model discloses a middle ear ventilation structure, which belongs to the technical field of medical instruments, and comprises a catheter, wherein the catheter is provided with a first port and a second port, the first port and the second port are arranged oppositely, a pipeline is formed in the catheter, and the first port, the pipeline and the second port are sequentially communicated; the inner diameter of the middle part of the conduit is smaller than that of the first port or the second port, a first abutting surface is formed on the outer wall of the conduit close to the first port, and a second abutting surface is formed on the outer wall of the conduit close to the second port. The outer wall of the catheter is used for being abutted against tissues at the eardrum breach, and the inner diameter of the middle part of the catheter is smaller than that of the first port or the second port, so that the inner diameter of the middle part of the catheter is close to the caliber of the eardrum breach, the middle part of the catheter is clamped at the eardrum breach, and the first abutting surface and the second abutting surface of the catheter are respectively used for being abutted against tissues at the left side and the right side of the eardrum breach, so that the stability of the catheter at the eardrum breach is improved, and premature falling-off of a drainage structure on the eardrum is avoided.

Description

Middle ear ventilation structure

Technical Field

The utility model belongs to the technical field of medical instruments, and particularly relates to a middle ear ventilation structure.

Background

Tympanic membrane catheterization is an operation mode for treating secretory otitis media, poor eustachian tube function and tympanic membrane invagination patients. Under a general anesthesia microscope or an otoscope, a tympanic membrane incision is used, a tension part of the tympanic membrane is firstly incised into a small opening, then a negative pressure aspirator is used for sucking the accumulated liquid in the tympanic membrane, a tube placing device is used for placing a tympanic membrane ventilation/drainage tube at the tympanic membrane breach, and the tympanic membrane ventilation/drainage tube is arranged at the tympanic membrane breach and is used for assisting the eustachian tube in ventilation, drainage and drug administration treatment.

However, the prior ventilation/drainage pipe has poor fixing effect and is easy to fall off prematurely; the ventilation/liquid discharge pipe with good fixing effect is clamped at the eardrum breach, the contact point between the ventilation/liquid discharge pipe and the eardrum breach is small, and tissues at the eardrum breach are easily damaged, so that the treatment effect of otitis media is affected.

Disclosure of Invention

The utility model aims to provide a middle ear ventilation structure, which realizes the improvement of the stability of a drainage structure on a tympanic membrane and avoids the premature falling-off of the drainage structure on the tympanic membrane; and the tissue at the eardrum breach is not easy to be damaged.

The technical scheme is as follows:

The middle ear ventilation structure comprises a catheter, wherein the catheter is provided with a first port and a second port, the first port and the second port are arranged opposite to each other, a pipeline is formed in the catheter, and the first port, the pipeline and the second port are sequentially communicated;

The inner diameter of the middle part of the conduit is smaller than the inner diameter of the first port or the second port, a first abutting surface is formed on the outer wall of the conduit close to the first port, and a second abutting surface is formed on the outer wall of the conduit close to the second port.

In one embodiment, the catheter comprises a first tube and a second tube, the first abutment surface is located on an outer wall of the first tube, and the second abutment surface is located on an outer wall of the second tube;

The first pipe body and the second pipe body are of cone-shaped structures, the minimum end of the first pipe body is arranged on the minimum end of the second pipe body, the first through hole is formed in the maximum end of the first pipe body, and the second through hole is formed in the maximum end of the second pipe body.

In one embodiment, the first abutting surface and the second abutting surface are both inclined and are inclined towards the middle part of the catheter; the angle between the first abutment surface and the second abutment surface is between 90 degrees and 180 degrees.

In one embodiment, the ratio of the inner diameter of the middle part of the conduit to the inner diameter of the first port or the second port is 0.8-0.85:1.

In one embodiment, the middle ear ventilation structure further comprises a flexible pad mounted on the outer wall of the catheter and extending circumferentially along the catheter, the flexible pad being at least partially located on the first and second abutment surfaces, and the flexible pad being at least partially made of a silicone material.

In one embodiment, the middle ear ventilation structure further comprises a first support component and a second support component, wherein the first support component is sleeved on the outer wall of the catheter and is arranged close to the first through hole, and the second support component is sleeved on the outer wall of the catheter and is arranged close to the second through hole; the first support component and the second support component are both annular, and the outer diameter of the first support component is larger than that of the second support component.

In one embodiment, the first support assembly has at least two hollow portions, and the two hollow portions are disposed opposite to each other.

In one embodiment, the hollow portion is one of a waist shape, a prismatic shape and a triangle shape.

In one embodiment, the first support assembly includes a first support ring, a second support ring, and a support rod, the first support ring is sleeved outside the catheter, a first end of the support rod is mounted outside the first support ring, and a second end of the support rod is mounted inside the second support ring; the first support ring is positioned within the second support ring.

In one embodiment, the first support component or the second support component is provided with a wire hole, and the wire hole penetrates through one side of the first support component to the other side of the first support component; the penetrating direction of the wire hole is consistent with the axial lead direction of the catheter.

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

1. Through installing the pipe in tympanic membrane breach department, first opening is towards the external auditory canal, and the second opening is towards the eustachian tube, makes external auditory canal and eustachian tube intercommunication through the pipe to assist eustachian tube to ventilate, drainage and medication through this pipe. When the drainage device is used, the outer wall of the catheter is used for abutting with tissues at the eardrum opening, the inner diameter of the middle part of the catheter is smaller than that of the first through hole or the second through hole, and the inner diameter of the middle part of the catheter is close to the caliber at the eardrum opening, so that the middle part of the catheter is clamped at the eardrum opening, and the first abutting surface and the second abutting surface of the catheter are respectively used for abutting with the tissues at the left side and the right side of the eardrum opening, so that the stability of the catheter at the eardrum opening is improved, and the premature falling-off of the drainage structure on the eardrum is avoided; and the first abutting surface and the second abutting surface of the catheter are in contact with tissues at the eardrum breach, so that the tissues at the eardrum breach are not easy to damage.

2. To further achieve stability of the catheter at the tympanic membrane breach. The catheter comprises a first catheter body and a second catheter body, wherein the first abutting surface is positioned on the outer wall of the first catheter body, and the second abutting surface is positioned on the outer wall of the second catheter body; therefore, the first tube body and the second tube body are respectively used for being abutted against tissues at the left side and the right side of the eardrum breach, and the phenomenon that the eardrum breach is closed due to tissue growth in the treatment process is avoided, so that the treatment effect is affected. The first pipe body and the second pipe body are arranged into cone structures, so that the minimum ends of the first pipe body and the second pipe body are clamped by the eardrum breach, and the stability of the catheter at the eardrum breach is improved; secondly, the maximum ends of the first tube body and the second tube body can be used for increasing the flow of the first port and the second port, so that the ventilation, drainage and drug delivery requirements of the eustachian tube in treatment are met.

3. The angle between the first abutting surface and the second abutting surface is smaller than 180 degrees, so that a clamping position is formed between the first abutting surface and the second abutting surface, and the stability of the catheter at the eardrum breach is further improved.

4. The ratio of the inner diameter of the middle part of the catheter to the inner diameter of the first port or the second port is 0.8-0.85:1, and the stability of the first abutting surface and the second abutting surface abutting against tissues at the left side and the right side of the eardrum breach is improved as much as possible under the condition of guaranteeing ventilation, drainage and administration flow of the catheter.

5. In order to further avoid damage to the tissue at the tympanic membrane breach by the drainage structure. The drainage structure is further provided with a flexible pad, the flexible pad is mounted on the outer wall of the catheter and extends along the circumferential direction of the catheter, the flexible pad is at least partially located on the first abutting surface and the second abutting surface, the flexible pad is used for flexibly contacting with tissues at the left side and the right side of the eardrum breach, and the drainage structure is further prevented from damaging tissues at the eardrum breach.

6. To further improve the stability of the catheter at the tympanic membrane breach. The drainage structure is also provided with a first supporting component and a second supporting component, the first supporting component and the second supporting component are respectively arranged close to the first port and the second port, the first supporting component is used for propping against the outside tissue at the eardrum breach, and the second supporting component is used for propping against the inside tissue at the eardrum breach, so that the stability of the catheter at the eardrum breach is further improved; moreover, the first support component and the second support component are in ring shapes, so that the first support component and the second support component are externally provided with outer cambered surfaces, and when passing through the eardrum breach, the outer cambered surfaces of the first support component and the second support component are not easy to damage tissues at the eardrum breach in the process of catheterization operation.

7. In order to make the first support component have certain elasticity. The first support component is provided with at least two hollowed-out parts, the two hollowed-out parts are arranged oppositely, and the hollowed-out parts are used for reducing the support strength from the first support component to the outer wall of the catheter, so that the first support component has certain elasticity outside the catheter; however, the position of the hollowed-out part cannot influence the first supporting piece to prop against the outside tissue at the eardrum breach, so that the first supporting component has certain supporting and stretching performances.

8. In order to enable the elasticity of the first support component to have different grades, the shape of the hollowed-out part can be one of a waist shape, a prismatic shape and a triangle, and the stability of the hollowed-out part with the triangle of the first support component is better.

9. The first support component and the second support component are provided with wire holes, and the penetrating direction of the wire holes is consistent with the axial line direction of the guide pipe; in the treatment process, if the drainage structure is required to be taken out, the operation wire can pass through the wire hole, the operation wire is connected with the drainage structure, and the drainage structure is taken out, so that the drainage structure is more convenient to take out from the external auditory meatus.

Drawings

FIG. 1 is a schematic view of a drainage structure according to an embodiment of the present utility model.

Fig. 2 is a schematic structural diagram of a drainage structure according to an embodiment of the utility model.

Fig. 3 is a schematic structural diagram of a drainage structure according to an embodiment of the present utility model.

FIG. 4 is a schematic view of a catheter according to an embodiment of the present utility model.

Fig. 5 is a schematic structural view of a first support assembly according to an embodiment of the utility model.

FIG. 6 is a schematic view of a drainage structure according to an embodiment of the present utility model.

Reference numerals illustrate:

100. a drainage structure; 1. a conduit; 11. a first port; 12. a second port; 13. a pipe; 14. a first abutment surface; 15. a second abutment surface; 16. a first tube body; 17. a second tube body; 2. a first support assembly; 21. a hollowed-out part; 22. a first support ring; 221. a mounting hole; 23. a second support ring; 24. a support rod; 3. a second support assembly; 4. a wire hole; 5. a flexible pad; 10. an external auditory canal; 20. middle ear cavity; 30. a tympanic membrane; 40. eustachian tube.

Detailed Description

In order that the utility model may be readily understood, a more particular description of specific embodiments thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings.

The terms "first" and "second" … "as used herein, unless specifically indicated or otherwise defined, are merely used to distinguish between names and do not denote a particular quantity or order.

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

The term "fixed" or "connected" as used herein may be directly fixed or connected to an element, or indirectly fixed or connected to an element.

As shown in fig. 1 to 6, a middle ear ventilation structure 100, the drainage structure 100 is used in the surgical treatment of otitis media, and comprises a catheter 1, the catheter 1 is provided with a first port 11 and a second port 12, the first port 11 is opposite to the second port 12, a pipeline 13 is formed in the catheter 1, and the first port 11, the pipeline 13 and the second port 12 are communicated in sequence; the inner diameter of the middle part of the conduit 1 is smaller than the inner diameter of the first port 11 or the second port 12, and a first abutting surface 14 is formed on the outer wall of the conduit 1 close to the first port 11, and a second abutting surface 15 is formed on the outer wall of the conduit 1 close to the second port 12. By installing the catheter 1 at the breach of the tympanic membrane 30, the first opening 11 is directed towards the external auditory canal 10, the second opening 12 is directed towards the eustachian tube 40 or the middle ear cavity 20, so that the external auditory canal 10 is communicated with the eustachian tube 40 or the middle ear cavity 20 through the catheter 1, and ventilation, drainage and drug administration treatment are carried out by assisting the eustachian tube 40 or the middle ear cavity 20 through the catheter 1. When the drainage device is used, the outer wall of the catheter 1 is used for abutting with tissues at the opening of the tympanic membrane 30, the inner diameter of the middle part of the catheter 1 is smaller than the inner diameter of the first through hole 11 or the second through hole 12, the inner diameter of the middle part of the catheter 1 is close to the caliber at the opening of the tympanic membrane 30, the middle part of the catheter 1 is clamped at the opening of the tympanic membrane 30, and the first abutting surface 14 and the second abutting surface 15 of the catheter 1 are respectively used for abutting with the tissues at the left side and the right side of the opening of the tympanic membrane 30, so that the stability of the catheter 1 at the opening of the tympanic membrane 30 is improved, and premature falling-off of the drainage structure 100 on the tympanic membrane 30 is avoided; moreover, the first abutting surface 14 and the second abutting surface 15 of the catheter 1 are in contact with the tissues at the opening of the tympanic membrane 30, and the tissues at the opening of the tympanic membrane 30 are not easily damaged by the contact of the opposite surfaces with the tissues.

To further achieve stability of the catheter 1 at the breach of the tympanic membrane 30. As shown in fig. 4, the catheter 1 includes a first tube 16 and a second tube 17, the first abutment surface 14 is located on the outer wall of the first tube 16, and the second abutment surface 15 is located on the outer wall of the second tube 17; so that the first tube body 16 and the second tube body 17 are respectively used for abutting with tissues at the left side and the right side of the opening of the tympanic membrane 30, and the closing of the opening of the tympanic membrane 30 caused by the growth of the tissues in the treatment process is avoided, thereby influencing the treatment effect. The first pipe body 16 and the second pipe body 17 are of cone-shaped structures, the minimum end of the first pipe body 16 is arranged on the minimum end of the second pipe body 17, the first through hole 11 is located at the maximum end of the first pipe body 16, and the second through hole 12 is located at the maximum end of the second pipe body 17. The first pipe body 16 and the second pipe body 17 are arranged into a cone-shaped structure, so that the minimum ends of the first pipe body 16 and the second pipe body 17 are clamped by the opening of the tympanic membrane 30, and the stability of the catheter 1 at the opening of the tympanic membrane 30 is improved; second, the maximum ends of the first and second tubes 16, 17 may be used to increase the flow of the first and second ports 11, 12 to meet the ventilation, drainage and administration requirements of the eustachian tube 40 during treatment.

As shown in fig. 4, the first abutment surface 14 and the second abutment surface 15 are both inclined and inclined toward the middle of the catheter 1; the angle between the first abutment surface 14 and the second abutment surface 15 is between 90 degrees and 180 degrees; for forming an engagement position between the first abutment surface 14 and the second abutment surface 15, further improving the stability of the catheter 1 at the breach of the tympanic membrane 30.

In order to balance the flow of the conduit 1 with the support. As shown in FIG. 4, the ratio of the inner diameter of the middle part of the conduit 1 to the inner diameter of the first port 11 or the second port 12 is 0.8-0.85:1. The stability of the abutment of the first abutment surface 14 and the second abutment surface 15 with the tissues on the left and right sides of the opening of the tympanic membrane 30 is improved as much as possible while the ventilation, drainage and administration flow of the catheter 1 are ensured.

To further avoid damage to tissue at the lacerations of the tympanic membrane 30 by the drainage structure 100. As shown in fig. 4, the drainage structure 100 further has a flexible pad 5, the flexible pad 5 is mounted on the outer wall of the catheter 1 and extends along the circumferential direction of the catheter 1, the flexible pad 5 is at least partially located on the first abutting surface 14 and the second abutting surface 15, and the flexible pad 5 is at least partially made of a silicone material. The flexible pad 5 is at least partially located on the first abutting surface 14 and the second abutting surface 15, and the flexible pad 5 is used for flexibly contacting with tissues at the left side and the right side of the opening of the tympanic membrane 30, so that the drainage structure 100 is further prevented from damaging the tissues at the opening of the tympanic membrane 30. The silica gel has the characteristics of softness and elasticity, can restore to the original state after deformation, and has wide application prospect in a human body due to the biocompatibility and the adjustability of the silica gel, so that the injury of medical instruments to the human body can be reduced by taking the silica gel as the flexible pad 5.

To further improve the stability of the catheter 1 at the breach of the tympanic membrane 30. As shown in fig. 1 to 3, the drainage structure 100 further has a first support component 2 and a second support component 3, where the first support component 2 is sleeved on the outer wall of the catheter 1 and is disposed near the first through hole 11, and the second support component 3 is sleeved on the outer wall of the catheter 1 and is disposed near the second through hole 12; the first support assembly 2 and the second support assembly 3 are both annular in shape. The first support component 2 is used for propping against the outer side tissue at the opening of the tympanic membrane 30, and the second support component 3 is used for propping against the inner side tissue at the opening of the tympanic membrane 30, so that the stability of the catheter 1 at the opening of the tympanic membrane 30 is further improved; moreover, the first support component 2 and the second support component 3 are in ring shapes, so that the outer surfaces of the first support component 2 and the second support component 3 are provided with outer cambered surfaces, and when passing through the opening of the tympanic membrane 30 in the process of catheterization, the outer cambered surfaces of the first support component 2 and the second support component 3 are not easy to damage tissues at the opening of the tympanic membrane 30.

In this embodiment, the first support component 2 and the second support component 3 are both in annular structures, and the outer diameter of the first support component 2 is larger than that of the second support component 3, so that the second support component 3 is easier to pass through the opening of the tympanic membrane 30 and is propped against the inner tissue at the opening of the tympanic membrane 30. Meanwhile, the outer diameter of the first support component 2 is larger than that of the second support component 3, so that the left tissue contact surface at the break of the first support component 2 and the tympanic membrane 30 is larger, and the middle ear ventilation structure 100 can be prevented from moving from the external auditory meatus 10 into the middle ear cavity 20. In addition, when in use, the outer wall of the catheter 1 can be coated with sterilizing and anti-inflammatory powder and medicament, so as to avoid infection at the position of the tympanic membrane opening 30.

In order to give the first support assembly 2a certain elasticity. As shown in fig. 1 to 3, the first support component 2 has at least two hollowed-out portions 21, and the two hollowed-out portions 21 are disposed opposite to each other. The hollowed-out part 21 reduces the overall supporting strength of the first supporting component 2, so that the local supporting property of the first supporting component 2 is weaker, and the hollowed-out part 21 is used for reducing the supporting strength from the first supporting component 2 to the part of the outer wall of the catheter 1, so that the first supporting component 2 has certain elasticity outside the catheter 1; the two hollowed-out parts 21 are oppositely arranged, so that the two opposite directions outside the catheter 1 have certain elasticity, and the flexibility of the installation of the catheter 1 is improved. However, the position of the hollowed-out portion 21 cannot affect the abutment of the first support member 2 with the outer tissue at the opening of the tympanic membrane 30, so that the first support member 2 has certain support and expansion properties. Meanwhile, in the tympanic membrane catheterization operation, the hollowed-out part 21 can further increase the observation field of view of doctors, so that the doctors can observe the position relationship between the catheter 1 and the opening of the tympanic membrane 30 conveniently, and the doctors can operate conveniently.

In order to make the elasticity of the first support assembly 2 have different levels. As shown in fig. 1 to 3, the hollowed-out portion 21 has one of a waist shape, a prismatic shape and a triangular shape. In this embodiment, the hollow portion 21 may be one of a waist shape, a prismatic shape and a triangle, and the first support assembly 2 has the triangular hollow portion 21 with better stability, so that the triangular hollow portion 21 has smaller elasticity, the prismatic hollow portion 21 has larger elasticity relative to the triangular hollow portion 21, and the biggest elasticity is the waist-shaped hollow portion 21.

As shown in fig. 1 and 5, the first support assembly 2 includes a first support ring 22, a second support ring 23 and a support rod 24, the first support ring 22 is sleeved outside the catheter 1, a first end of the support rod 24 is mounted outside the first support ring 22, and a second end of the support rod 24 is mounted inside the second support ring 23; the first support ring 22 is located within the second support ring 23. The first support ring 22 is internally provided with a mounting hole 221, the aperture of the mounting hole 221 is smaller than or equal to the caliber of the first through hole 11, and the first support ring 22 is in interference fit with the catheter 1 through the mounting hole 221. The first support ring 22 is fixed with the second support rod 24 through the support rod 24, the second support ring 23 is used for propping against the outside tissue at the opening of the tympanic membrane 30, and the second support ring 23 is also used for increasing the contact surface between the first support component 2 and the opening of the tympanic membrane 30, so that the stability of the catheter 1 at the opening of the tympanic membrane 30 is further improved.

As shown in fig. 1, 2, 3 and 5, the first support component 2 or the second support component 3 is provided with a wire hole 4, and the wire hole 4 penetrates through one side of the first support component 2 to the other side of the first support component 2; the penetrating direction of the wire hole 4 is consistent with the axial line direction of the catheter 1. In the treatment process, if the drainage structure 100 needs to be taken out, the surgical wire can be passed through the wire hole 4, the surgical wire is connected with the drainage structure 100, and the drainage structure 100 is taken out, so that the drainage structure 100 is more conveniently taken out from the external auditory meatus 10.

The above examples are also not an exhaustive list based on the utility model, and there may be a number of other embodiments not listed. Any substitutions and modifications made without departing from the spirit of the utility model are within the scope of the utility model.

Claims

1. The middle ear ventilation structure is characterized by comprising a catheter, wherein the catheter is provided with a first port and a second port, the first port and the second port are arranged opposite to each other, a pipeline is formed in the catheter, and the first port, the pipeline and the second port are sequentially communicated;

2. A middle ear ventilation structure according to claim 1, wherein the duct comprises a first tube and a second tube, the first abutment surface being located on an outer wall of the first tube and the second abutment surface being located on an outer wall of the second tube;

3. A middle ear ventilation structure according to claim 1, wherein the first abutment surface and the second abutment surface are both inclined and both inclined towards the middle of the duct; the angle between the first abutment surface and the second abutment surface is between 90 degrees and 180 degrees.

4. A middle ear ventilation structure according to claim 1, wherein the ratio of the inner diameter of the central portion of the conduit to the inner diameter of the first or second port is from 0.8 to 0.85:1.

5. A middle ear ventilation structure according to claim 1, further comprising a flexible pad mounted to an outer wall of the tube and extending circumferentially of the tube, the flexible pad being at least partially located on the first and second abutment surfaces and being at least partially formed from a silicone material.

6. A middle ear ventilation structure as claimed in claim 1, further comprising a first support assembly and a second support assembly, the first support assembly being sleeved on the outer wall of the conduit and disposed adjacent the first port, the second support assembly being sleeved on the outer wall of the conduit and disposed adjacent the second port; the first support component and the second support component are both annular, and the outer diameter of the first support component is larger than that of the second support component.

7. A middle ear ventilation structure as claimed in claim 6, wherein the first support assembly has at least two hollowed-out portions, the two hollowed-out portions being disposed opposite one another.

8. A middle ear ventilation structure as claimed in claim 7, wherein the hollowed-out portion is one of kidney-shaped, prismatic and triangular in shape.

9. A middle ear ventilation structure according to claim 6, wherein the first support assembly comprises a first support ring, a second support ring and a support rod, the first support ring being sleeved outside the duct, a first end of the support rod being mounted outside the first support ring, a second end of the support rod being mounted inside the second support ring; the first support ring is positioned within the second support ring.

10. A middle ear ventilation structure according to any one of claims 6 to 9, wherein the first support member or the second support member has a wire aperture formed therein, the wire aperture extending from one side of the first support member to the other side of the first support member; the penetrating direction of the wire hole is consistent with the axial lead direction of the catheter.