System and method for providing iontophoresis at tympanic membrane

    公开(公告)号:US10987512B2

    公开(公告)日:2021-04-27

    申请号:US16194853

    申请日:2018-11-19

    摘要: Various systems and methods provide iontophoretic delivery of anesthesia at a patient's tympanic membrane. Some implementations provide channel switching enabling a single current sink to pull current through two electrodes in an alternating fashion based on clock pulses. The iontophoretic delivery of anesthesia may be driven by an AC modulated current. Some implementations provide for continuous flow of fresh iontophoresis fluid to the ear canal during iontophoresis. The fluid flows from a source reservoir into the cavity between the tympanic membrane and a plug, and then drains out of the cavity to a reservoir. An iontophoresis system may also detect capacitance between an anode electrode and an auxiliary electrode in a patient's ear canal, watching for reduced capacitance to indicate presence of a bubble in the iontophoresis fluid.

    Systems, apparatus, and methods for transport and delivery of therapeutic substance to middle ear

    公开(公告)号:US11806493B2

    公开(公告)日:2023-11-07

    申请号:US16964773

    申请日:2019-02-01

    IPC分类号: A61F11/20 A61M31/00

    摘要: Systems, apparatus, and methods are described for transporting and delivering a therapeutic substance to an ear of a subject, including a tubular element (216) configured for deployment in a tympanic membrane (TM) and a fluid transport element (230). The fluid transport element can be configured to transport the therapeutic substance from a proximal side to a distal side of the tubular element. Systems, apparatus, and methods further can include a fluid dispenser including a reservoir configured to contain a therapeutic substance, and a tubular element defining a lumen in fluid communication with an outlet in which the lumen and the outlet are configured to deliver the therapeutic substance from the reservoir to a region proximal to the tympanic membrane. Systems, apparatus, and methods further can include an electrode device.

    System and method for providing iontophoresis at tympanic membrane

    公开(公告)号:US10130808B2

    公开(公告)日:2018-11-20

    申请号:US13804491

    申请日:2013-03-14

    摘要: Various systems and methods provide iontophoretic delivery of anesthesia at a patient's tympanic membrane. Some implementations provide channel switching enabling a single current sink to pull current through two electrodes in an alternating fashion based on clock pulses. The iontophoretic delivery of anesthesia may be driven by an AC modulated current. Some implementations provide for continuous flow of fresh iontophoresis fluid to the ear canal during iontophoresis. The fluid flows from a source reservoir into the cavity between the tympanic membrane and a plug, and then drains out of the cavity to a reservoir. An iontophoresis system may also detect capacitance between an anode electrode and an auxiliary electrode in a patient's ear canal, watching for reduced capacitance to indicate presence of a bubble in the iontophoresis fluid.