Eustachian tube catheter with built-in stent

Abstract

The utility model discloses a eustachian tube tampon with built-in support, eustachian tube tampon includes: tampon body and bellows support, tampon body includes big cone section and small cone section, and the narrow end of big cone section is connected with the narrow end of small cone section, and the conical cavity is formed in big cone section, and the straight hole passageway that is linked with conical cavity is equipped in small cone section, one end of bellows support is equipped with the multi -claw expansion head for the outside elastic open, when tampon body is sent into the specified position of eustachian tube, bellows support is placed in straight hole passageway, and multi -claw expansion head is placed in conical cavity and is outwardly braced open big cone section, to with eustachian tube isthmus department fixed tampon body, and big cone section of tampon body is close to nasopharynx, and the close adhesion with eustachian tube can be made through the bracing open of multi -claw expansion head, and the sound isolation is formed.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a eustachian tube plug with an internal support. Background Technology

[0002] The Eustachian tube is a funnel-shaped air passage located between the posterior nasal cavity and the middle ear cavity. Normally, it is closed to prevent self-hearing. During swallowing, yawning, or blowing, it opens momentarily to regulate the pressure balance between the middle ear and its surroundings, drain fluid from the middle ear, and prevent retrograde infection. The principle behind the closure and opening of the Eustachian tube is as follows: Eustachian tube closure is a static closure formed by the relaxation and weight of the surrounding muscles; when the muscles around the Eustachian tube contract, the tube opens.

[0003] Abnormal opening of the Eustachian tube is a common otolaryngological disease. Typical symptoms include increased self-hearing, hearing one's own breath sounds, subjective tinnitus, and a feeling of fullness in the ear.

[0004] For patients with abnormally open Eustachian tubes, the commonly used treatment method is to open the tympanic cavity, insert a Eustachian tube plug, and fix the plug through the isthmus of the Eustachian tube; however, this method has the following drawbacks:

[0005] 1. It requires surgery on the ear, which is a complex procedure and causes pain for the patient;

[0006] 2. Existing Eustachian tube plugs, after being implanted in the human body, cannot fit well with the human Eustachian tube due to their simple design, thus failing to achieve sound insulation.

[0007] 3. It falls off easily;

[0008] 4. Some are difficult to remove. Utility Model Content

[0009] In view of the shortcomings of the existing technology, this utility model provides a eustachian tube plug with a built-in support.

[0010] This utility model discloses a eustachian tube plug with a built-in support, comprising: a plug body and a corrugated tube support;

[0011] The plug tube body includes a large conical section and a small conical section. The narrow end of the large conical section is connected to the narrow end of the small conical section. A conical cavity is formed inside the large conical section, and a straight hole channel communicating with the conical cavity is provided inside the small conical section.

[0012] One end of the corrugated tube support is provided with a multi-claw expansion head for outward expansion. When the tube body is inserted into the designated position of the Eustachian tube, the corrugated tube support is placed in the straight hole channel, and the multi-claw expansion head is placed in the conical cavity and expands the large conical section outward to fix the tube body to the isthmus of the Eustachian tube.

[0013] As a further improvement of this utility model, the plug tube body is a silicone tube.

[0014] As a further improvement of this utility model, the corrugated pipe support and the multi-claw expansion head are an integral structure, and the material is nickel-titanium alloy; the multi-claw expansion head includes multiple elastic strips arranged in parallel, one end of the elastic strip is connected to the corrugated pipe support, and the elastic strip springs outward under the condition of releasing external restriction to expand the large conical section.

[0015] As a further improvement of this utility model, the wide end of the large conical section is closed and a small hole is provided in the middle for maintaining the pressure balance between the ear chamber and the outside atmosphere, and the wall thickness of the large conical section is smaller than the wall thickness of the small conical section.

[0016] As a further improvement of this utility model, before expansion, the multi-claw expansion head and the bellows support are placed together in the release tube. One end of the release tube is placed in the conical cavity through the straight hole channel. The guide wire is inserted into the release tube and its end abuts against the end of the bellows support to push the bellows support out of the release tube. After the multi-claw expansion head is released from the restriction of the release tube, it springs outward to expand the large conical section.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] The plug body of this utility model is provided with a corrugated tube support inside. When the external force is released, the multi-claw expansion head at the end of the corrugated tube support opens the large conical section of the plug body. The large conical section of the plug body is close to the nasopharynx. By opening it with the multi-claw expansion head, it can fit tightly with the Eustachian tube to form sound insulation.

[0019] The plug tube body of this utility model has a small hole on the large conical section to maintain the air pressure balance between the ear chamber and the outside atmosphere.

[0020] The corrugated stent of this invention is made of nickel-titanium alloy. The nickel-titanium alloy stent is deformed and is in an open state at room temperature. It does not have the support capacity at low temperature and can be removed from the nasopharynx. At the same time, the main body of the stent is a corrugated tube, which is soft, tough and strong, does not affect its support function and will not harm the patient. Attached Figure Description

[0021] Figure 1This is a perspective view of the Eustachian tube plug disclosed in this utility model;

[0022] Figure 2 for Figure 1 A cross-sectional view showing the multi-claw expansion head not open;

[0023] Figure 3 for Figure 1 A cross-sectional view showing the multi-claw expansion head open;

[0024] Figure 4 This is a perspective view of the combination of the Eustachian tube plug and the release tube disclosed in this utility model; the guide wire is omitted.

[0025] Figure 5 for Figure 4 A sectional view;

[0026] Figure 6 This is a schematic diagram of the structure of the corrugated pipe support disclosed in this utility model.

[0027] In the picture:

[0028] 10. Plug body; 11. Large conical section; 12. Small conical section; 13. Conical cavity; 14. Straight hole channel; 15. Small hole; 20. Bellows support; 21. Multi-claw expansion head; 30. Release tube; 40. Guide wire; 50. Fixing tube; 51. Second fastening screw; 52. Sliding groove; 53. Positioning nut; 60. Sliding tube; 61. Connector; 62. Lock nut; 63. Positioning screw; 64. First fastening screw; 65. Positioning block; 70. Exit screw; 80. Guide tube; 90. Hand ring. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model 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 utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] The present invention will now be described in further detail with reference to the accompanying drawings:

[0031] like Figures 1-6 As shown, this utility model provides a eustachian tube plug with an internal support, comprising: a plug body 10 and a corrugated tube support 20; wherein,

[0032] The plug body 10 of this utility model is an elastic silicone tube, which includes a large conical section 11 and a small conical section 12. The narrow end of the large conical section 11 is connected to the narrow end of the small conical section 12 and the two are integral structures. A conical cavity 13 is formed inside the large conical section 11, and the wall thickness of the conical cavity 13 is uniform. A straight hole channel 14 is provided inside the small conical section 12, which is connected to the conical cavity 13 to form a through channel along the axis. Preferably, the straight hole channel 14 is a circular hole channel, and the wall thickness of the straight hole channel 14 gradually increases from the narrow end to the wide end. The wide end of the large conical section 11 is closed and a small hole 15 is provided in the middle to maintain the pressure balance between the ear chamber and the outside atmosphere. The wall thickness of the large conical section 11 is less than the wall thickness of the small conical section 12.

[0033] The bellows support 20 of this invention has a multi-claw expansion head 21 at one end that can spring outwards. When the tube body 10 is inserted into the designated position of the Eustachian tube, the bellows support 20 is placed in the straight hole channel 14, and the multi-claw expansion head 21 is placed in the conical cavity 13 and expands outwards the large conical section 11 to fix the tube body 10 to the isthmus of the Eustachian tube. Furthermore, the bellows support 20 and the multi-claw expansion head 21 are an integral structure made of nickel-titanium alloy; the multi-claw expansion head 21 includes multiple parallel elastic strips, one end of which is connected to the bellows support 20. When the external restriction is released, the elastic strips spring outwards to expand the large conical section.

[0034] Before expansion, the multi-claw expansion head 21 and the bellows support 20 are placed together in the release tube 30. One end of the release tube 30 is placed in the conical cavity 13 through the straight hole channel 14. The guide wire 40 is inserted into the release tube 30 and its end abuts against the end of the bellows support 20 to push the bellows support 20 out of the release tube 30. After the multi-claw expansion head 21 is released from the restriction of the release tube 30, it springs outward to open the large conical section 11 and fix the plug tube body 10 to the isthmus of the Eustachian tube.

[0035] This invention utilizes a corrugated tube support 20 embedded within the tube body 10. Pushed by a release tube 30, the support is inserted into the Eustachian tube, passing through the isthmus. A guide wire then pushes the corrugated tube support 20 out of the release tube 30. The multi-claw expansion head 21 of the corrugated tube support 20 is released, causing the tube body 10 to open and fix itself to the isthmus. The release tube 30 and guide wire are then pushed out. The silicone tube is made of soft silicone, and the portion near the nasopharynx fits tightly against the Eustachian tube, creating sound insulation. The tube body also has small holes 15 to maintain pressure balance between the ear cavity and the outside atmosphere. The nickel-titanium alloy support undergoes deformation treatment, remaining in an open state at approximately 37 degrees Celsius. At low temperatures, it lacks support and can be removed from the nasopharynx. The corrugated tube body is flexible, resilient, and strong, without affecting its support function and without harming the patient.

[0036] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A Eustachian tube plug with an internal support, characterized in that, include: The plug tube body and the bellows support; The plug tube body includes a large conical section and a small conical section. The narrow end of the large conical section is connected to the narrow end of the small conical section. A conical cavity is formed inside the large conical section, and a straight hole channel communicating with the conical cavity is provided inside the small conical section. One end of the corrugated tube support is provided with a multi-claw expansion head for outward expansion. When the tube body is inserted into the designated position of the Eustachian tube, the corrugated tube support is placed in the straight hole channel, and the multi-claw expansion head is placed in the conical cavity and expands the large conical section outward to fix the tube body to the isthmus of the Eustachian tube.

2. The Eustachian tube plug as described in claim 1, characterized in that, The plug body is a silicone tube.

3. The Eustachian tube plug as described in claim 1, characterized in that, The corrugated pipe support and the multi-claw expansion head are an integral structure made of nickel-titanium alloy. The multi-claw expansion head includes multiple parallel elastic strips. One end of each elastic strip is connected to the corrugated pipe support. When the external restriction is removed, the elastic strips spring outward to expand the large conical section.

4. The Eustachian tube plug as described in claim 1, characterized in that, The wide end of the large conical section is closed and a small hole is provided in the middle to maintain the pressure balance between the ear chamber and the outside atmosphere. The wall thickness of the large conical section is smaller than the wall thickness of the small conical section.

5. The eustachian tube plug as described in any one of claims 1 to 4, characterized in that, Before expansion, the multi-claw expansion head and the bellows support are placed together in the release tube. One end of the release tube is placed in the conical cavity through the straight hole channel. The guide wire is inserted into the release tube and its end abuts against the end of the bellows support to push the bellows support out of the release tube. After the multi-claw expansion head is released from the restriction of the release tube, it springs outward to expand the large conical section.

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