Removable middle ear implant sensor

Patent metadata

Field	Value
Publication number	US-10091588-B2
Application number	US-201715482860-A
Country	US
Kind code	B2
Filing date	Apr 10, 2017
Priority date	Sep 24, 2014
Publication date	Oct 2, 2018
Grant date	Oct 2, 2018

Abstract

A middle ear implant includes a first interface portion configured to interface with a first structure of a middle ear of a patient, a second interface portion configured to interface with a second structure of the middle ear of the patient, a shaft that connects the first and second interface portions, a carrier plate removably mounted in one of the first or second interface portions, and a removable sensor disposed at one end of the shaft, between the shaft and one of the first interface portion or the second interface portion. The removable sensor is configured to provide a DC signal output indicative of static pressure on the sensor based on placement of the sensor between the first and second structures, and provide an AC signal output indicative of a frequency response of the implant. The removable sensor is disposed at a portion of the carrier plate.

First claim

What is claimed is:

1. A method of employing a removable sensor for providing feedback on implant placement during surgical procedures for a middle ear implant comprising:
a first interface portion configured to interface with a first structure of a middle ear of a patient;
a second interface portion configured to interface with a second structure of the middle ear of the patient;
a shaft configured to connect the first interface portion and the second interface portion;
a carrier plate configured to be removably mounted in one of the first interface portion or the second interface portion; and
a removable sensor configured to be removably mounted to one end of the shaft, between the shaft and one of the first interface portion or the second interface portion, the removable sensor being configured to provide a DC component indicative of static pressure on the removable sensor based on placement of the removable sensor between the first and second structures, and provide an AC component indicative of a frequency response of the implant,
wherein the removable sensor comprises a sensing layer configured to have a first electrical lead contact a top surface of the sensing layer and a second electrical lead contact a bottom surface of the sensing layer,
the method comprising:
mounting the removable sensor on the carrier plate;
installing the carrier plate into the implant with communication to a meter;
placing the implant in the middle ear of a patient;
generating electrical impulses based on mechanical forces imparted on the shaft;
detecting, based on the generated electrical impulses, the DC component at the meter;
detecting, based on the generated electrical impulses, the AC component at the meter;
removing the carrier plate from the implant to enable removal of the removable sensor from the carrier plate; and
reinstalling the carrier plate into the implant.

2. The method of claim 1 , further comprising adjusting placement of the implant based on the detected DC and AC components.

3. The method of claim 1 , further comprising: evaluating at least one of the detected DC component and the detected AC component relative to a respective predefined range to determine whether the placing of the implant results in the at least one of the detected DC component and the detected AC component being within the respective predefined range.

Assignees

• Univ Johns Hopkins

Inventors

• Farrar-Gaines Dawnielle
• Coles Jr George L
• Francis Howard W

Classifications

• A61F2/18

  Internal ear or nose parts, e.g. ear-drums {(implants for middle ear ventilation or drainage A61F11/202)} · CPC title

• A61B5/4851

  Prosthesis assessment or monitoring · CPC title

• A61B2505/05

  Surgical care · CPC title

• H04R25/606

  acting directly on the eardrum, the ossicles or the skull, e.g. mastoid, tooth, maxillary or mandibular bone, or mechanically stimulating the cochlea, e.g. at the oval window · CPC title

• H04R25/30 Primary

  Monitoring or testing of hearing aids, e.g. functioning, settings, battery power · CPC title