Evidence map›Paper›PMID 33859137›Full record

ArticleOtology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology2021

Magnetic Steering of Robotically Inserted Lateral-wall Cochlear-implant Electrode Arrays Reduces Forces on the Basilar Membrane In Vitro.

Cameron M Hendricks, Matt S Cavilla, David E Usevitch, Trevor L Bruns, Katherine E Riojas, Lisandro Leon, Robert J Webster, Frank M Warren, Jake J Abbott

Open access · greenAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
1.7field-weighted citation impact, top 18% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

5 citing papers in PubMed, 17 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Article
  5. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 4 institutions in 1 country.

Cameron M HendricksDepartment of Mechanical Engineering, University of Utah, Salt Lake City, Utah.
Matt S CavillaDepartment of Mechanical Engineering, University of Utah, Salt Lake City, Utah.
David E UsevitchDepartment of Mechanical Engineering, University of Utah, Salt Lake City, Utah.
Trevor L BrunsDepartment of Mechanical Engineering, Vanderbilt University, Nashville, Tennessee.
Katherine E RiojasDepartment of Mechanical Engineering, Vanderbilt University, Nashville, Tennessee.
Lisandro LeonSarcos Robotics, Salt Lake City, Utah.
Robert J WebsterDepartment of Mechanical Engineering, Vanderbilt University, Nashville, Tennessee.
Frank M WarrenThe Oregon Clinic, Portland, Oregon.
Jake J AbbottDepartment of Mechanical Engineering, University of Utah, Salt Lake City, Utah.
University of Utah · USVanderbilt University · USOregon Clinic · USSarcos (United States) · US

Funding

Magnetic Guidance for Improved Cochlear-Implant InsertionR01DC013168 · NIDCD · UNIVERSITY OF UTAH · PI ABBOTT, JAKE · 2014 to 2018
$1.8M
NIDCD NIH HHS R01 DC013168
6 · The paper itself

Abstract

hypothesisUndesirable forces applied to the basilar membrane during surgical insertion of lateral-wall cochlear-implant electrode arrays (EAs) can be reduced via robotic insertion with magnetic steering of the EA tip.

backgroundRobotic insertion of magnetically steered lateral-wall EAs has been shown to reduce insertion forces in vitro and in cadavers. No previous study of robot-assisted insertion has considered force on the basilar membrane.

methodsInsertions were executed in an open-channel scala-tympani phantom. A force plate, representing the basilar membrane, covered the channel to measure forces in the direction of the basilar membrane. An electromagnetic source generated a magnetic field to steer investigational EAs with permanent magnets at their tips, while a robot performed the insertion.

resultsWhen magnetic steering was sufficient to pull the tip of the EA off of the lateral wall of the channel, it resulted in at least a 62% reduction of force on the phantom basilar membrane at insertion depths beyond 14.4 mm (p < 0.05), and these beneficial effects were maintained beyond approximately the same depth, even with 10 degrees of error in the estimation of the modiolar axis of the cochlea. When magnetic steering was not sufficient to pull the EA tip off of the lateral wall, a significant difference from the no-magnetic-steering case was not found.

conclusionsThis in vitro study suggests that magnetic steering of robotically inserted lateral-wall cochlear-implant EAs, given sufficient steering magnitude, can reduce forces on the basilar membrane in the first basilar turn compared with robotic insertion without magnetic steering.

Indexed as

Cochlear ImplantationCochlear ImplantsBasilar MembraneCochleaElectrodes, ImplantedHumansMagnetic Phenomena

Identifiers

PMID33859137
PMCPMC8282696
OpenAlexW3155033316

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.