Eustachian tube balloon catheter

Abstract

The invention relates to a medical instrument. The eustachian tube balloon catheter comprises a slender catheter, the slender catheter is provided with a near-end catheter body and a far-end catheterbody, the near-end catheter body is fixedly sleeved with a connector, the far-end catheter body is fixedly sleeved with a balloon, the outer surface of the balloon is coated with a drug coating, the drug coating is liposome or cyclodextrin, and the outer circumferential surface of the slender catheter is provided with a hydrophilic coating. The drug coating is arranged on the outer surface of theballoon, so that the irritation and toxicity of the drug to a lesion can be reduced, and the stability of the drug is improved; the hydrophilic coating is arranged on the outer peripheral surface of the slender catheter, and the lubricating degree of the hydrophilic coating is good, so that the surface friction coefficient of the balloon, the slender catheter and the eustachian tube is reduced, and the balloon catheter more easily penetrates through a nasal cavity channel of a patient to enter the eustachian tube.

Description

technical field [0001] The invention relates to a medical device, in particular to a Eustachian tube balloon catheter. Background technique [0002] The Eustachian tube is the only channel through which the middle ear communicates with the outside world. Blockage or blockage of the Eustachian tube can lead to various lesions in the middle ear system, and eventually lead to hearing impairment and head noise. It is the symptom of secretory otitis media. Eustachian tube dysfunction is mainly caused by mechanical stenosis caused by swelling of the Eustachian tube mucosa, lack of surfactant in the Eustachian tube, inflammatory or allergic edema of the Eustachian tube mucosa and other factors. Although the hearing level can be improved through the reconstruction of the tympanic cavity and the connection of the ossicular chain structure through increasingly perfect middle ear surgery methods and superb surgical skills, there is currently no effective way to improve the Eustachian ...

AI Technical Summary

Problems solved by technology

Although the hearing level can be improved through the reconstruction of the tympanic cavity and the connection of the ossicular chain structure through increasingly perfect middle ear surgery methods and superb surgical skills, there is currently no effective way to improve the Eustachian tube dysfunction, which leads to long-term complications after middle ear surgery. The effect cannot be guaranteed

At present, there have been reports on the treatment of Eustachian tube and tympanic cavity lesions by balloon catheter dilation, but the existing Eustachian tube balloon catheter does not add any drug coating on the surface of the balloon, which has a certain impact on the stability of the drug. Moreover, due to the improper setting of the material and structure of the inner tube, the inner tube is easy to bend during the operation, resulting in damage to the balloon and causing new trauma to the patient

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