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CN-121971787-A - Inner ear drug delivery device

CN121971787ACN 121971787 ACN121971787 ACN 121971787ACN-121971787-A

Abstract

The invention relates to the technical field of medical appliances, in particular to a device for delivering inner ear medicines, an injection unit comprises a compression rod which is arranged on an injector in a sliding way, a positioning plate is fixedly arranged at the output end of the injector, the positioning plate is fixedly connected with a first conduit, a conduit joint is fixedly arranged at the other end of the first conduit, a protective shell is fixedly arranged on the conduit joint, the protective shell is positioned at the axis of the conduit joint, when in use, a worker holds the first conduit joint with the protective shell by hand, slowly plugs the first conduit joint into the ear of a patient until reaching a preset position, and air is infused into a cavity between the first conduit and the second conduit by an air pump on an infusion pump through an air pipe of the device, and the air enters the conduit joint.

Inventors

  • ZHANG DEJUN
  • Fu Zeming
  • GUO YINGYUAN
  • GUO FANG

Assignees

  • 吉林大学

Dates

Publication Date
20260505
Application Date
20260326

Claims (10)

  1. 1. The utility model provides a device of inner ear drug delivery, includes shell (1), shell (1) internal fixation is provided with syringe (2), fixedly be provided with pipe one (4) on the output of syringe (2), its characterized in that still includes: The injection unit comprises a compression bar (3) which is arranged on the injector (2) in a sliding manner, wherein a positioning plate (21) is fixedly arranged on the output end of the injector (2), the positioning plate (21) is fixedly connected with the first conduit (4), a conduit joint (5) is fixedly arranged on the other end of the first conduit (4), a protective shell (51) is fixedly arranged on the conduit joint (5), and the protective shell (51) is positioned at the axis of the conduit joint (5); The protection unit, the protection unit is including fixed setting is in pipe two (41) in pipe one (4), pipe joint (5) internal fixation is provided with fixed plate (8), fixed being provided with drum (6) on fixed plate (8), just drum (6) are located the inside of pipe joint (5), the interior sliding of drum (6) is provided with slide (61), fixed being provided with syringe needle (7) on slide (61), syringe needle (7) with sliding connection between protecting crust (51).
  2. 2. The device for delivering an inner ear drug according to claim 1, wherein the outer circumferential surface of the housing (1) is provided with an anti-slip rib (12), and the housing (1) is provided with a circular hole (14).
  3. 3. The device for delivering the inner ear drug according to claim 1, wherein the first catheter (4) and the second catheter (41) are coaxially arranged, a first cavity is arranged between the first catheter (4) and the second catheter (41), an infusion cavity is arranged in the second catheter (41), a second cavity is arranged between the catheter connector (5) and the cylinder (6), the first cavity and the second cavity are mutually communicated, and the infusion cavity and the cylinder (6) are mutually communicated.
  4. 4. The device for delivering the inner ear drug according to claim 1, wherein the circular outer circumferential surface of the catheter adapter (5) is made of a flexible glue material with high toughness, the fixing plates (8) are positioned at two ends of the catheter adapter (5), air holes (81) are formed in the fixing plates (8), and a plurality of the air holes (81) are uniformly distributed.
  5. 5. The device for delivering the inner ear medicine according to claim 2, wherein clamping plates (13) are fixedly arranged on the inner wall of the housing (1), the clamping plates (13) are uniformly distributed, a connector (22) is fixedly arranged on the positioning plate (21), a gas pipe (11) is fixedly arranged on the connector (22), the gas pipe (11) is in sliding connection with the round hole (14), and one clamping plate (13) is buckled between the positioning plate (21) and the connector (22).
  6. 6. An inner ear drug delivery device according to claim 1, wherein a connection hose (63) is fixedly provided on the outer peripheral surface of the cylinder (6), and the other end of the connection hose (63) communicates with the needle (7).
  7. 7. An inner ear drug delivery device according to claim 1, characterized in that the connection of the protective shell (51) to the catheter adapter (5) is arranged in an arc.
  8. 8. The device for delivering the inner ear drug according to claim 1, wherein a limiting plate (62) is fixedly arranged on the inner wall of the cylinder (6), the limiting plate (62) is positioned at the bottom of the joint of the sliding plate (61) and the cylinder (6), and the sliding plate (61) is tightly attached to the inner wall of the cylinder (6).
  9. 9. An inner ear drug delivery device according to claim 5, characterized in that a sealing sleeve (23) is fixedly arranged at the connection of the connector (22) and the catheter one (4).
  10. 10. Device for the delivery of an inner ear drug according to claim 1, characterized in that a pressing disc (31) is fixedly arranged on the end of the pressing rod (3), and that an anti-slip groove is arranged on the pressing disc (31).

Description

Inner ear drug delivery device Technical Field The invention relates to the technical field of medical appliances, in particular to a device for delivering inner ear medicines. Background The inner ear diseases such as tinnitus and hearing loss are diseases characterized by recurrent, paroxysmal, episodic vertigo, hearing loss and tinnitus, and are generally treated by the inner ear administration technique. Current inner ear administration techniques include tympanic administration and direct inner ear administration. Wherein, the medicine is directly delivered to the tympanic cavity of the middle ear, so that the medicine is diffused and permeated into the inner ear through the round window membrane to realize the inner ear indirect medicine delivery, and the inner ear direct medicine delivery is directly delivered into the inner ear. Because of the uncontrollable drug diffusion property during tympanic administration, it is difficult to ensure that a sufficient amount of drug enters the inner ear, which affects the therapeutic effect, and thus, direct administration of the inner ear has been widely used. The traditional inner ear drug delivery device uses a medical dropping bottle, a tympanic membrane puncture needle and a simple pushing rod as core components, the dropping bottle is provided with a scale and a slender dropper, the puncture needle is a minimally invasive small-diameter needle head, the pushing rod is used for assisting in conveying ointment drugs, when the traditional inner ear drug delivery device is used, an external auditory canal is cleaned firstly, a patient lies on one side and faces upwards, if the dropping bottle is used, an auricle is pulled lightly to straighten the auditory canal, the dropper stretches into the shallow part of the auditory canal to drop quantitative liquid medicine, the posture is kept for 5-10 minutes to promote permeation, if deep administration is needed, medical staff can position by means of an otoscope, puncture the tympanic membrane with the puncture needle in a minimally invasive manner, accurately convey the drugs to a middle ear cavity through the pushing rod and permeate the drugs into the inner ear through the mucous membrane, the whole operation process needs to be strictly aseptic, the instrument is prevented from damaging the tympanic membrane and the fine structure of the inner ear deeply, and convenience and safety are considered in the whole process. The direct administration of the inner ear is generally carried out through an injector and a catheter connected with a micro pump, wherein the injector depends on manual operation during injection, and in the administration scene of the inner ear which is in micro-liter level or even nano-upgrade, the administration dosage is difficult to precisely control, so that the curative effect is influenced or adverse reaction is caused, the catheter connected with the micro pump can precisely administer, but the catheter has certain flexibility, so that the catheter is difficult to directly pierce a round window membrane to be inserted into the inner ear, therefore, the current practice is to firstly pierce the round window membrane by using a piercing tool to establish an insertion channel, then align the catheter with the established insertion channel, and insert the catheter into the inner ear along the insertion channel, the whole process needs to carry out two insertion operations, the defect of long operation time exists, the two independent operations need to repeatedly adjust the position of an instrument and calibrate the piercing angle, the operation duration is prolonged, the operation burden of medical staff is increased, and the discomfort in the operation of patients can be promoted. Disclosure of Invention Based on the problems in the prior art, the catheter has certain flexibility, so that the catheter is difficult to directly pierce the round window membrane and insert into the inner ear, the current practice is to firstly pierce the round window membrane by using a piercing tool to establish an insertion channel, then align the catheter with the established insertion channel, and insert the catheter into the inner ear along the insertion channel, the whole process needs to perform two insertion operations, the defect of long operation time exists, the two independent operations need to repeatedly adjust the position of an instrument and calibrate the piercing angle, the operation time is prolonged, the operation burden of medical staff is increased, and the discomfort in the operation of a patient is also promoted. The technical proposal adopted by the application for solving the technical problems is that the device for delivering the inner ear medicine comprises a shell, wherein an injector is fixedly arranged in the shell, a first catheter is fixedly arranged at the output end of the injector, The injection unit comprises a compression bar which is arranged on the injector in a slid