Eustachian tube irrigation-dilation drug delivery integrated device and using method thereof

Abstract

The invention discloses a eustachian tube irrigation-dilation drug delivery integrated device and a using method thereof. An irrigation dilator of a combined stent is clamped in a front outer clampingtube of a conveying system and is driven to advance through a rear driving portion, a water guide tube inner core of the irrigation dilator is connected to the interior of an outer annular water guide tube in a sleeving manner, the tail of the water guide tube inner core and the tail of the outer annular water guide tube are connected with an outlet A and an outlet B of a medical three-way valvethrough guide tubes respectively, an inlet of the medical three-way valve is connected with a water injection device or a lavage device, and a eustachian tube drug stent is telescopically connected tothe exterior of a balloon body in a sleeving mode. According to the eustachian tube irrigation-dilation drug delivery integrated device and the using method thereof, a balloon dilation guide tube, the water guide tube inner core and the eustachian tube drug stent are integrated, the whole device is pushed at a time through the conveying system in use, cleaning and dilation drug delivery treatmentof the eustachian tube can be achieved only by externally exchanging the inlet of the medical three-way valve to be connected with the lavage device or the water injection device, balloon dilation and eustachian tube drug stent releasing are synchronously completed, the device is easy to operate, safety and reliability are achieved, and the treatment scheme is more perfect.

Description

Technical field[0001]The invention belongs to the technical field of medical devices, and in particular relates to an eustachian tube flushing-expansion drug delivery integrated device and a use method thereof.Background technique[0002]In the process of ear microsurgery, the conventional method of treating secretory otitis media caused by Eustachian tube dysfunction is tympanic membrane puncture / tubing and / or tympanic cavity administration. The trauma to the tympanic membrane and middle ear is unavoidable. It can cause the following complications: (1) middle ear mucosal hemorrhage, mucus exudation, or long-term postoperative catheterization is prone to tympanic sclerosis; (2) non-union after tympanic membrane puncture or postoperative infection resulting in permanent tympanic membrane perforation; ( 3) Chronic suppurative otitis media after upper respiratory tract infection or external auditory canal contamination; (4) Sensorineural hearing loss may be caused when the tube is placed...

AI Technical Summary

Problems solved by technology

[0002] During ear microsurgery, the conventional method for the treatment of secretory otitis media caused by eustachian tube dysfunction is tympanocentesis / cannulation and / or intratympanic administration, and its trauma to the tympanic membrane and middle ear inevitably reduces the It can lead to the following complications: (1) middle ear mucosal bleeding, mucus exudation or long-term postoperative catheterization are prone to tympanosclerosis; (2) non-healing or postoperative infection of the tympanotomy resulting in permanent tympanic membrane perforation; ( 3) Chronic suppurative otitis media after upper respiratory tract infection or contamination of the external auditory canal; (4) Sensorineural deafness may be caused when tubes are placed posteriorly and inferiorly

In addition, for refractory adhesive otitis media, due to extreme inversion of the tympanic membrane, the above operations may even be impossible to achieve, which brings great difficulties to clinical treatment

[0003] In recent years, endoscopic eustachian tube dilatation has become a new method for treating patients with eustachian tube dysfunction, but it only dilates the eustachian tube mechanically at one time in order to improve eustachian tube function. The microenvironment of the middle ear cannot be completely improved; in response to the above-mentioned technical drawbacks, people have successively developed drug balloon dilatation catheters, but they all directly add drug coatings on the balloon, and the drug stays in the lesion area through balloon expansion , to achieve the purpose of treatment, the eustachian tube was not cleaned before the release of the drug, resulting in poor treatment effect, and may even cause medical accidents due to the reaction between the drug and the abnormal secretion in the eustachian tube

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