Eustachian tube plug tube with built-in support and plug tube imbedding device

Abstract

The invention discloses a Eustachian tube plug tube with a built-in support and a plug tube imbedding device. The Eustachian tube plug tube comprises a plug tube body and a corrugated tube support. The plug pipe body comprises a large cone section and a small cone section, the narrow end of the large cone section is connected with the narrow end of the small cone section, a conical cavity is formed in the large cone section, and a straight hole channel communicated with the conical cavity is formed in the small cone section; when the plug tube body is fed into the designated position of the Eustachian tube, the corrugated tube support is arranged in the straight hole channel, the multi-claw expansion head is arranged in the conical cavity and expands the large cone section outwards so that the plug tube body can be fixed to the isthmus portion of the Eustachian tube, the large cone section of the plug tube body is close to the nasopharynx portion, and the large cone section of the plug tube body is close to the nasopharynx portion. The multi-claw expansion head can be tightly attached to the eustachian tube to form sound isolation through opening of the multi-claw expansion head.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a eustachian tube plug with an internal support and a plug insertion device. 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. Summary of the Invention

[0009] To address the shortcomings of existing technologies, this invention provides a Eustachian tube plug with a built-in support and a plug insertion device.

[0010] This invention discloses a eustachian tube plug with an internal 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 the present invention, the plug body is a silicone tube.

[0014] As a further improvement of the present invention, 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 the present invention, 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 the present invention, 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] The present invention also discloses a plug insertion device, comprising: a fixing tube, a sliding tube, an exit screw, a guide wire, a release tube, and the above-mentioned Eustachian tube plug;

[0018] The release tube is fixedly installed at one end of the sliding tube, and the withdrawal screw is screwed to the other end of the sliding tube; a guide tube is fixedly installed at one end of the fixed tube, and the sliding tube is inserted into the fixed tube from the other end of the fixed tube and can slide inside the fixed tube.

[0019] The multi-claw expansion head and the bellows support are placed together at one end of the release tube. One end of the release tube is placed in the conical cavity through the straight hole channel. The release tube and the plug body are slidably disposed in the guide tube. Based on the sliding of the sliding tube in the fixed tube, the plug body can be driven to slide out of the guide tube and placed at a designated position in the Eustachian tube. One end of the guide wire is fixed in the middle of the withdrawal screw. The other end of the guide wire is inserted into the release tube through the sliding tube and its end abuts against the end of the bellows support. Rotating the withdrawal screw pushes 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 open the large conical section and fix the plug body in the isthmus of the Eustachian tube.

[0020] As a further improvement of the present invention, both the fixed tube and the sliding tube are provided with hand rings for pushing the sliding tube inside the fixed tube.

[0021] As a further improvement of the present invention, one end of the fixed tube is provided with a positioning nut, and the sliding tube is also provided with a positioning post. The positioning post is provided with a positioning screw that can slide horizontally and a first fastening screw for locking or unlocking the positioning screw. One end of the positioning screw can abut against the end of the positioning nut. The positioning screw is parallel to the axis of the fixed tube or the sliding tube. The extension length of the positioning screw is adjusted by the first fastening screw to adjust the length of the plug body extending out of the guide tube when the positioning screw abuts against the end face of the positioning nut.

[0022] As a further improvement of the present invention, the end of the sliding tube is provided with a lock nut, which is used to lock the ejection screw and the sliding tube.

[0023] As a further improvement of the present invention, the fixed tube is provided with a second fastening screw, which is used to lock the sliding tube and the fixed tube; at least one sliding groove is provided on the side wall of the fixed tube along the axial direction, and at least one positioning block is provided on the outer wall of the sliding tube accordingly. The positioning block is slidably disposed in the sliding groove, and the sliding tube is prevented from rotating in the fixed tube by the limitation of the positioning block and the sliding groove.

[0024] As a further improvement of the present invention, the fixed tube is provided with scale lines.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] The plug body of the present invention 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.

[0027] The large conical section of the plug tube body of the present invention is provided with a small hole to maintain the pressure balance between the ear chamber and the outside atmosphere.

[0028] The corrugated stent of the present invention is a nickel-titanium alloy stent. 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.

[0029] The endotracheal tube insertion device of the present invention can achieve precise and stable insertion of the endotracheal tube, is simple to operate, and can alleviate the patient's pain during the operation. Attached Figure Description

[0030] Figure 1 This is a perspective view of the Eustachian tube plug disclosed in this invention;

[0031] Figure 2 for Figure 1 A cross-sectional view showing the multi-claw expansion head not open;

[0032] Figure 3 for Figure 1 A cross-sectional view showing the multi-claw expansion head open;

[0033] Figure 4 This is a perspective view of the combination of the Eustachian tube plug and the release tube disclosed in this invention; wherein, the guidewire is omitted;

[0034] Figure 5 for Figure 4 A sectional view;

[0035] Figure 6 This is a schematic diagram of the structure of the corrugated pipe support disclosed in this invention;

[0036] Figure 7 This is a perspective view of the plug insertion device disclosed in this invention;

[0037] Figure 8 This is a cross-sectional view of the eustachian tube insertion device disclosed in this invention; wherein the eustachian tube plug is not protruding.

[0038] Figure 9 This is a cross-sectional view of the plug insertion device disclosed in this invention; wherein, the Eustachian tube plug is pushed out from the guide tube.

[0039] In the picture:

[0040] 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

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] The present invention will now be described in further detail with reference to the accompanying drawings:

[0043] like Figures 1-6 As shown, the present invention provides a eustachian tube plug with an internal support, comprising: a plug body 10 and a corrugated tube support 20; wherein,

[0044] The plug body 10 of the present invention 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 in the large conical section 11, and the wall thickness of the conical cavity 13 is uniform. A straight hole channel 14 communicating with the conical cavity 13 is provided in the small conical section 12 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 for maintaining the balance of air pressure 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.

[0045] The corrugated tube support 20 of the present invention has a multi-claw expansion head 21 that can be springed outward at one end. When the tube body 10 is inserted into the designated position of the Eustachian tube, the corrugated tube 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 outward to fix the tube body 10 to the isthmus of the Eustachian tube. Furthermore, the corrugated tube 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 corrugated tube support 20. When the external restriction is released, the elastic strips spring outward to expand the large conical section.

[0046] 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.

[0047] 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 of the Eustachian tube. After the release tube 30 is withdrawn, the multi-claw expansion head 21 of the corrugated tube support 20 is released, causing the silicone tube to expand and fix itself to the isthmus of the patient. 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 features 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, ensuring its support function without harming the patient.

[0048] like Figures 7-9 As shown, the present invention provides a eustachian tube insertion device, comprising: a fixing tube 50, a sliding tube 60, an exit screw 70, a guide wire 40, a release tube 30, and the aforementioned eustachian tube plug; wherein,

[0049] One end of the sliding tube 60 of the present invention is fixedly installed with a release tube 30 via a connector 61, and the other end of the sliding tube 60 is screwed with an exit screw 70. The exit screw 70 can be adjusted in terms of its feed amount in the sliding tube 60 by thread engagement with the sliding tube 60. The end of the sliding tube 60 is provided with a lock nut 62, which is used to lock the exit screw 70 and the sliding tube 60. After locking, the exit screw 70 is fixed to the sliding tube 60. After unlocking, the exit screw 70 can be adjusted. A guide tube 80 is fixedly installed at one end of the fixed tube 50, and a sliding tube 60 is inserted into the fixed tube 50 from the other end of the fixed tube 50 and can slide within the fixed tube 50. Furthermore, in order to prevent the sliding tube 60 from only sliding axially and not rotating within the fixed tube 50, the present invention provides at least one sliding groove 52 along the axial direction on the side wall of the fixed tube 50, and provides at least one positioning block 65 on the outer wall of the sliding tube 60. The positioning block 65 slides within the sliding groove 52. The positioning block 65 and the sliding groove 52 limit the rotation of the sliding tube within the fixed tube. Preferably, there are two sliding grooves 52, which are symmetrically distributed.

[0050] The multi-claw expansion head 21 and the bellows support 20 of the present invention are jointly placed at one end of 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 release tube 30 and the plug tube body 10 are slidably disposed in the guide tube 80. Based on the sliding of the sliding tube 60 in the fixed tube 50, the plug tube body 10 can be driven to slide out of the guide tube 80 and placed at the designated position of the Eustachian tube, such as... Figure 9 As shown; one end of the guide wire 40 is fixed to the middle of the release screw 70, and the other end of the guide wire 40 is inserted into the release tube 30 through the sliding tube 60 and the end abuts against the end of the bellows support 20. The release screw 70 is rotated inward and fed into the sliding tube 60 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 of the plug tube body 10, thereby fixing the plug tube body 10 to the isthmus of the Eustachian tube.

[0051] To facilitate pushing the sliding tube 60 within the fixed tube 50, the present invention provides hand rings 90 on both the fixed tube 50 and the sliding tube 60. Specifically, the fixed tube 50 has two symmetrical hand rings 90, and the sliding tube 60 has one hand ring 90. In use, the doctor places the thumb of one hand inside the hand ring 90 of the sliding tube 60, and the index and middle fingers inside the two hand rings 90 of the fixed tube 50 to complete the single-handed operation.

[0052] To adjust the length of the tube body 10 extending out of the guide tube 80, the present invention provides a positioning nut 53 at one end of the fixed tube 50 and a positioning post on the sliding tube 60. The positioning post has a horizontally sliding positioning screw 63 and a first fastening screw 64 for locking or unlocking the positioning screw 63. One end of the positioning screw 63 can abut against the end of the positioning nut 53. The positioning screw 63 is parallel to the axis of the fixed tube 50 or the sliding tube 60. The extension length of the positioning screw 63 is adjusted by the first fastening screw 64 to adjust the length of the tube body 10 extending out of the guide tube 80 when the positioning screw 63 abuts against the end face of the positioning nut 53. That is, the doctor adjusts the placement of the fixed tube in advance according to the patient's Eustachian tube position using the scale lines on the fixed tube 50, and simultaneously adjusts the extension length of the positioning screw 63 using the first fastening screw 64. This extension length is such that when the sliding tube is pushed inward to its final position (the positioning screw 63 abuts against the end face of the positioning nut 53), the tube body 10 can reach the isthmus of the patient's Eustachian tube.

[0053] Furthermore, the fixing tube 50 of the present invention is provided with a second fastening screw 51, which is used to lock the sliding tube 60 and the fixing tube 50.

[0054] The method of using this invention is as follows:

[0055] S1. After assembling the release tube 30 and the Eustachian tube plug, insert it into the fixed tube 50 along with the sliding tube 60. Fix the guide wire 40 on the release screw 70 and place one end of the guide wire 40 against the end of the corrugated tube support 20.

[0056] S2. Tightening the locking nut 62 secures the release screw 70 and the sliding tube 60 together. Then, the doctor places the thumb of one hand inside the hand ring 90 of the sliding tube 60, and the index and middle fingers inside the two hand rings 90 of the fixed tube 50. The doctor pushes the sliding tube 60 inward, and the sliding tube 60 slides in the fixed tube 50 to push the guide wire 40 and the release tube 30, pushing the plug tube body 10 to the position of the Eustachian tube. Then, the sliding tube 60 and the fixed tube 50 are locked together by the first fastening screw 64.

[0057] S3. Loosen the lock nut 62, rotate the screw 70 inward to release it, and feed the guide wire 40 inward to push the bellows support 20 out of the plug body 10 so that the multi-claw expansion head 21 at the head end of the bellows support 20 expands to support the silicone plug; then, withdraw the fixed tube 50, sliding tube 60, guide wire 40 and release tube 30 as a whole.

[0058] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

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.

6. A plug insertion device, characterized in that, include: The fixed tube, the sliding tube, the withdrawal screw, the guide wire, the release tube, and the Eustachian tube plug as described in claim 5; The release tube is fixedly installed at one end of the sliding tube, and the withdrawal screw is screwed to the other end of the sliding tube; a guide tube is fixedly installed at one end of the fixed tube, and the sliding tube is inserted into the fixed tube from the other end of the fixed tube and can slide inside the fixed tube. The multi-claw expansion head and the bellows support are placed together at one end of the release tube. One end of the release tube is placed in the conical cavity through the straight hole channel. The release tube and the plug body are slidably disposed in the guide tube. Based on the sliding of the sliding tube in the fixed tube, the plug body can be driven to slide out of the guide tube and placed at a designated position in the Eustachian tube. One end of the guide wire is fixed in the middle of the withdrawal screw. The other end of the guide wire is inserted into the release tube through the sliding tube and its end abuts against the end of the bellows support. Rotating the withdrawal screw pushes 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 open the large conical section and fix the plug body in the isthmus of the Eustachian tube.

7. The plug insertion device as described in claim 6, characterized in that, Both the fixed tube and the sliding tube are equipped with hand rings for pushing the sliding tube inside the fixed tube.

8. The plug insertion device as described in claim 6, characterized in that, One end of the fixed tube is provided with a positioning nut, and the sliding tube is also provided with a positioning post. The positioning post is provided with a positioning screw that can slide horizontally and a first fastening screw for locking or unlocking the positioning screw. One end of the positioning screw can abut against the end of the positioning nut. The positioning screw is parallel to the axis of the fixed tube or the sliding tube. The extension length of the positioning screw is adjusted by the first fastening screw to adjust the length of the plug body extending out of the guide tube when the positioning screw abuts against the end face of the positioning nut.

9. The plug insertion device as described in claim 6, characterized in that, The end of the sliding tube is provided with a lock nut, which is used to lock the ejection screw and the sliding tube.

10. The plug insertion device as described in claim 6, characterized in that, The fixed tube is provided with a second fastening screw, which is used to lock the sliding tube and the fixed tube; the side wall of the fixed tube is provided with at least one sliding groove along the axial direction, and the outer wall of the sliding tube is provided with at least one positioning block, which slides in the sliding groove. The positioning block and the sliding groove limit the rotation of the sliding tube in the fixed tube.

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