CN215915242U

CN215915242U - Eustachian tube expansion and transmission device with full-degradable drug stent

Info

Publication number: CN215915242U
Application number: CN202120785934.6U
Authority: CN
Inventors: 金玲; 余少卿
Original assignee: Shanghai Tongji Hospital
Current assignee: Shanghai Tongji Hospital
Priority date: 2021-04-16
Filing date: 2021-04-16
Publication date: 2022-03-01
Anticipated expiration: 2031-04-16

Abstract

The utility model relates to a eustachian tube expansion and transmission device with a fully-degradable drug stent, which comprises an expansion tube, a push tube core and an absorbable stent, wherein a circle of plastic film is covered in the middle of the expansion tube, one side of the plastic film is also connected with an inflation tube, and the inflation tube is communicated with the plastic film in the expansion tube and controls the expansion of the plastic film; the inside of expansion pipe is provided with a propelling movement tube core, the both ends of propelling movement tube core are provided with oval handle end and push away the head end, still be provided with in the terminal position of expansion pipe and absorb the support, the place ahead that can absorb the support and be located propelling movement tube core upper push head end. Its advantages are: the utility model has simple structure, convenient operation, lower cost, economy and durability, can greatly save the cost, can continuously expand the eustachian tube and perform local drug treatment operation on the eustachian tube, improves the treatment effect and relieves the pain of patients.

Description

Eustachian tube expansion and transmission device with full-degradable drug stent

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a eustachian tube expansion and transmission device with a fully-degradable drug stent.

Background

The ear structure of human body mainly includes external ear, middle ear and inner ear, the middle ear mainly includes eustachian tube, tympanic cavity, tympanum and mastoid air chamber, and the eustachian tube is an important pipeline for communicating nasopharynx portion and middle ear cavity. Secretory Otitis Media (SOM) is a non-suppurative inflammatory disease of the middle ear characterized by effusion and hearing loss in the middle ear, and is one of the common diseases of the ear, nose and throat. The main clinical causes of chronic secretory otitis media are eustachian tube dysfunction (stenosis and obstruction), tympanic membrane puncture and tube placement are invasive symptomatic treatment, and complications such as unhealed tympanic membrane perforation and the like exist, and even the chronic secretory otitis media can be converted into suppurative otitis media and long-term chronic suppuration. The eustachian tube balloon expansion technology aiming at eustachian tube stenosis in recent years has the defects that the eustachian tube balloon expansion technology cannot be pushed away generally and cannot be expanded continuously clinically due to high cost. The eustachian tube support can realize continuous expansion, is invented and used at present, has metal and is degradable and absorbable, but does not contain medicines and has no local treatment effect. The appearance of a fully-degradable sinus drug stent brings a new idea for people, the mucosa of the sinus and the mucosa of the eustachian tube belong to the upper airway mucosa, the mucosa has the commonality, the hormone treatment of secretory otitis media is positive, and the local hormone treatment can reduce inflammatory reaction, eliminate swelling, improve stenosis and prevent and treat adhesion.

The Chinese patent application: CN2467051Y discloses a eustachian tube support implanting device. The eustachian tube support mainly comprises a handle part, a connecting part and a pushing part, wherein the handle part, the connecting part and the pushing part are connected into a whole, and the eustachian tube support placed on the pushing part is placed into a treatment part through the handle part.

The Chinese patent application: CN208372011U discloses a drug-loading device for treating eustachian tube stenosis, comprising a first balloon body, a catheter body and a handle; the catheter body comprises a far-end tube body, a middle hypotube and a near-end tube body; the first balloon body is coated outside the end part of the far-end tube body; the left end of the middle hypotube is fixedly connected with the far-end tube body, and the right end of the middle hypotube is fixedly connected with the near-end tube body; the near-end tube body is connected with the handle; a fixing part matched with a special embedded instrument is arranged at the joint of the handle and the near-end tube body; the surface of the first balloon body is provided with a drug coating. The device has mainly enlarged the lumen through sacculus expansion postoperative, resumes middle ear normal ventilation, and smooth and easy drainage alleviates eustachian tube mucous membrane swelling, promotes mucociliary's regeneration and physiological function and resumes, but the device overall structure is complicated, and the cost of manufacture is higher, and for disposable operation, can not last the expansion and it is used medicine, consequently it is not very convenient to use.

Therefore, in view of the above, there is a need for a eustachian tube expanding and delivering device with a fully degradable drug stent, which has a simple structure, is convenient to operate, has low cost, and can continuously expand the eustachian tube and can simultaneously perform local drug therapy.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provide a eustachian tube expanding and conveying device with a fully degradable drug bracket.

In order to achieve the purpose, the utility model adopts the technical scheme that:

a eustachian tube expansion and transmission device with a fully-degradable drug stent comprises an expansion tube, a pushing tube core and an absorbable stent, wherein the expansion tube is of a hollow structure and is similar to a disposable trachea cannula in structure, the head end of the expansion tube is bent by 30-45 degrees, the port part of the expansion tube is blunt and round, the tail end of the expansion tube is expanded, a circle of plastic film covers the middle of the expansion tube, one side of the plastic film is also connected with an inflation tube, the inflation tube is communicated with the plastic film in the expansion tube and controls the expansion of the plastic film, the tail end of the inflation tube is also connected with a plastic bag, and the plastic bag can be connected with an external inflation device; the inside of expansion pipe is provided with a propelling movement die, the propelling movement die make for solid plastic body, its diameter is less than the diameter of expansion pipe, the both ends of propelling movement die are provided with oval handle end and push head end, the outer end of expansion pipe is reserved to the handle end of propelling movement die, and its push head end is located the inside of expansion pipe, still be provided with in the terminal position of expansion pipe and absorb the support, the place ahead that can absorb the support and be located propelling movement die upper push head end.

In the eustachian tube expansion and transmission device with the fully degradable drug stent, as a preferred scheme, the whole expansion tube is made of plastic, and the total length of the expansion tube is 10-15cm, and the tube diameter is 0.4-0.6 cm.

In the eustachian tube dilating and conveying device with the fully degradable drug stent, as a preferable scheme, the absorbable stent is integrally compressed in the tube diameter of the dilating tube.

In the eustachian tube expanding and conveying device with the fully degradable drug stent, as a preferred scheme, the absorbable stent is in an elastically-opened compact net-shaped structure after being released, and the length of the absorbable stent after being elastically opened is 0.8-1.2cm, and the tube diameter is 3-4 mm.

The utility model has the advantages that:

1. the utility model has simple structure, convenient operation, lower cost, economy and durability, can greatly save the cost, avoid unnecessary expenditure, can also carry out continuous expansion on the eustachian tube and carry out local drug treatment operation on the eustachian tube, improve the treatment effect, relieve the pain of patients and is beneficial to wide popularization and use.

Drawings

FIG. 1 is a schematic structural view of a eustachian tube dilating and delivering device with a fully degradable drug stent according to the present invention.

FIG. 2 is a schematic illustration of the post-release partial structure of an absorbable stent of a eustachian tube dilation and delivery device with a fully degradable drug stent according to the present invention.

Detailed Description

The utility model will be further illustrated with reference to specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications can be made by those skilled in the art after reading the disclosure of the present invention, and equivalents fall within the scope of the appended claims.

The reference numerals and components referred to in the drawings are as follows:

1. expanding tube 2, pushing tube core 3, absorbable stent

4. Plastic film 5, gas-filled tube 6, plastic bag

7. Handle end 8, pushing head end

EXAMPLE 1 Eustachian tube dilation and delivery device with fully degradable drug stents

Referring to fig. 1 and 2, fig. 1 is a schematic structural view of a eustachian tube dilating and delivering device with a fully degradable drug stent according to the present invention. FIG. 2 is a schematic partial view of the expanded eustachian tube delivery device with fully degradable drug stent of the present invention after release of the resorbable stent.

The device mainly makes a new assumption through the technology of the fully-degradable sinus medicament bracket applied in the current clinic, the mucosa of the sinus and the mucosa of the eustachian tube belong to the upper airway mucosa and have certain commonality, so that the device can be used for local hormone therapy, relieve inflammatory reaction, eliminate swelling, improve stenosis and prevent adhesion so as to solve the problems that the eustachian tube is difficult to continuously expand and cannot be used for local medicament therapy simultaneously, and the eustachian tube expanding and transmitting device with the fully-degradable medicament bracket is provided based on the device, the device mainly comprises an expanding tube 1, a pushing tube core 2 and an absorbable bracket 3, the expanding tube 1 is arranged in a hollow structure, the structure of the expanding tube is similar to that of a disposable trachea cannula, the head end of the expanding tube 1 is bent at 30-45 degrees, the port opening is blunt and round, the tail end of the expanding tube is expanded, and the device can be conveniently connected with a suction tube, after the task of pushing the tube core 2 is finished, the tube core can be taken out and connected with a suction tube to suck the ear waste liquid, so that effusion accumulated in a eustachian tube or even a middle ear (tympanum) can be sucked while expansion is carried out, the pressure of a middle ear cavity is reduced, and the treatment effect is improved; the middle of the expansion tube 1 is covered with a circle of plastic film 4, one side of the plastic film 4 is also connected with an inflation tube 5, the inflation tube 5 is communicated with the plastic film 4 in the expansion tube and controls the expansion of the plastic film, and the plastic film 4 can generate a supporting effect on the ear cavity of a patient in an inflated state, so that the medicine can be conveniently transferred into the ear cavity of the patient; the tail end of the inflation tube 5 is also connected with a plastic bag 6, the plastic bag 6 can be connected with an external inflation device, and the air inflow of the plastic bag 6 is controlled by the inflation device, so that the use of different patients is met, the use comfort of the patients is improved, and the treatment effect of the patients is improved; the inside of expansion pipe 1 is provided with a propelling movement die 2, propelling movement die 2 make for solid plastic body, its diameter is less than the diameter of expansion pipe, the both ends of propelling movement die 2 are provided with oval handle end 7 and push away head end 8, the handle end 7 of propelling movement die is reserved in the outer end of expansion pipe 1, and its push away head end 8 is located the inside of expansion pipe 1, still be provided with in the terminal position of expansion pipe and absorb support 3, the push away head end the place ahead that can absorb support 3 be located the propelling movement die, 2 accessible push away head ends 8 with the intraductal absorbable support 3 propelling movement of expansion to patient's ear intracavity of propelling movement die, carry out the drug delivery to patient's ear, improve patient's treatment.

In this embodiment, the whole expanding tube 1 is preferably made of plastic, and the total length of the expanding tube 1 is 10-15cm, and the tube diameter is 0.4-0.6 cm.

In this embodiment, the absorbable stent 3 may be made of lactide-glycolide copolymer, and is integrally compressed in the diameter of the dilating tube.

In this embodiment, it is preferable that the absorbable stent 3 is a sprung compact mesh structure after being released, the absorbable stent has a length of 0.8-1.2cm after being sprung open and a diameter of 3-4mm (determined according to the length of cartilage of an adult eustachian tube of about 1cm and the diameter of the eustachian tube of about 3-4 mm), and the absorbable stent can be made into various models according to the needs of different patients, so as to meet the use requirements of different patients, improve the practicability of the device, increase the comfort level of treatment of the patients, relieve the mental stress of the patients, and facilitate the rehabilitation of the patients.

The use method of the utility model comprises the following steps: firstly, the handle end of the device is held by hand, the inclined end of the expansion tube slowly extends into the ear cavity on one side of a patient, after the eustachian tube is found, the plastic film around the expansion tube is inflated and expanded by the inflating device of the plastic bag, the eustachian tube can be continuously expanded after the plastic film is expanded, unnecessary damage to the ear cavity of the patient caused by overlarge air pressure is avoided when the eustachian tube is inflated, then the patient pushes the push tube core, the absorbable support in the end part of the expansion tube is driven to enter the ear cavity of the patient along with the slow movement of the push tube core, the absorbable support can automatically flick to form a compact net-shaped structure after entering, so that the affected part of the patient can be treated within a range after degradation, the treatment effect of the patient is improved, the push tube core can be drawn out after the push task is finished, the tail end of the expansion tube is connected with an aspirator, the hydrops accumulated in the eustachian tube and even the middle ear (tympanum) is sucked while the hydrops is expanded so as to relieve the pressure of the ear cavity of a patient and improve the treatment effect.

It should be noted that: the utility model has simple structure, convenient operation, lower cost, economy and durability, can greatly save the cost and avoid unnecessary expenditure, can also carry out continuous expansion on the eustachian tube and carry out local drug treatment operation on the eustachian tube simultaneously, improves the treatment effect, has small stimulation on the tissue of the eustachian tube by the implanted absorbable support, reduces the hyperplasia of granulation tissue, can be naturally absorbed by the human body, avoids secondary operation, relieves the pain of patients, and is beneficial to wide popularization and use.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and additions can be made without departing from the principle of the present invention, and these should also be considered as the protection scope of the present invention.

Claims

1. The eustachian tube expansion and conveying device with the fully-degradable drug stent is characterized by comprising an expansion tube, a pushing tube core and an absorbable stent, wherein the expansion tube is of a hollow structure and is similar to a disposable trachea cannula in structure, the head end of the expansion tube is bent by 30-45 degrees, the port of the expansion tube is blunt and round, the tail end of the expansion tube expands, a circle of plastic film covers the middle of the expansion tube, one side of the plastic film is also connected with an inflation tube, the inflation tube is communicated with the plastic film in the expansion tube and controls the expansion of the plastic film, the tail end of the inflation tube is also connected with a plastic bag, and the plastic bag can be connected with an external inflation device; the inside of expansion pipe is provided with a propelling movement die, the propelling movement die make for solid plastic body, its diameter is less than the diameter of expansion pipe, the both ends of propelling movement die are provided with oval handle end and push head end, the outer end of expansion pipe is reserved to the handle end of propelling movement die, and its push head end is located the inside of expansion pipe, still be provided with in the terminal position of expansion pipe and absorb the support, the place ahead that can absorb the support and be located propelling movement die upper push head end.

2. A eustachian tube dilating and delivering device with a fully degradable drug stent as claimed in claim 1, wherein the whole dilating tube is made of plastic, and the total length of the dilating tube is 10-15cm and the diameter of the dilating tube is 0.4-0.6 cm.

3. A eustachian tube dilating and delivering device with a fully degradable drug stent as claimed in claim 1 wherein the absorbable stent is integrally compressed within the diameter of the dilating tube.

4. The eustachian tube expanding and conveying device with the fully degradable drug stent according to claim 1, wherein the absorbable stent is in a bouncing compact net-shaped structure after being released, and the length of the absorbable stent after being bounced is 0.8-1.2cm, and the tube diameter is 3-4 mm.