Evidence map›Paper›PMID 29151776›Full record

ArticleJournal of microelectromechanical systems : a joint IEEE and ASME publication on microstructures, microactuators, microsensors, and microsystems2014

Mechanical Evaluation of Unobstructing Magnetic Microactuators for Implantable Ventricular Catheters.

Hyowon Lee, Kameran Kolahi, Marvin Bergsneider, Jack W Judy

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Journal of microelectromechanical systems : a joint IEEE and ASME publication on microstructures, microactuators, microsensors, and microsystems, 2014. 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
–field-weighted citation impact
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.

  1. Article
  2. Article
  3. Article
  4. Low-cost rapid prototyping of liquid crystal polymer based magnetic microactuators for glaucoma drainage devices.Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference · 2016
    Article
  5. Polyimide-based magnetic microactuators for biofouling removal.Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference · 2016
    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

4 authors.

Hyowon LeeNeuroEngineering Training Program, Biomedical Engineering Interdepartmental Program, University of California at Los Angeles, Los Angeles, CA 90095 USA. He is now with the St. Jude Medical, Implantable Electronic Systems Division, Plano, TX 75024 USA (hyowon.lee@ucla.edu).
Kameran KolahiMathematics Department, University of California at Los Angeles, Los Angeles, CA 90095 USA (kkolahi1@gmail.com).
Marvin BergsneiderNeuroEngineering Training Program, Biomedical Engineering Interdepartmental Program, Neurosurgery, School of Medicine, University of California at Los Angeles, Los Angeles, CA 90095 USA (mbergsneider@mednet.ucla.edu).
Jack W JudyNeuroEngineering Training Program, Biomedical Engineering Interdepartmental Program, Department of Electrical Engineering, University of California at Los Angeles, Los Angeles, CA 90095 USA. He is now with the Nanoscience Institute for Medical and Engineering Technology, University of Florida, Gainesville, FL 32611 USA (jack.judy@ieee.org).

Funding

MEMS-Enabled Ventricular Catheter for HydrocephalusR21NS062324 · NINDS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI BERGSNEIDER, MARVIN, JUDY, JACK W · 2009 to 2010
$388k
Toward Self-Clearing Ventricular Catheter for Hydrocephalus ApplicationF31HL093994 · NHLBI · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI LEE, HYOWON · 2008 to 2010
$91k
NHLBI NIH HHS F31 HL093994NINDS NIH HHS R21 NS062324
6 · The paper itself

Abstract

Here, we report on the development and evaluation of novel unobstructing magnetic microactuators for maintaining the patency of implantable ventricular catheters used in hydrocephalus application. The treatment of hydrocephalus requires chronic implantation of a shunt system to divert excess cerebrospinal fluid from the brain. These shunt systems suffer from a high failure rate (>40%) within the first year of implantation, often due to biological accumulation. Previously, we have shown that magnetic microactuators can be used to remove biological blockage. The new cantilever-based magnetic microactuator presented in this paper improves upon the previous torsional design using a bimorph to induce a postrelease out-of-plane deflection that will prevent the device from occluding the pore at rest. The mechanical evaluations (i.e., postrelease deflection, static and dynamic responses) of fabricated devices are reported and compared with theoretical values.

Indexed as

hydrocephalusimplantable MEMSMagnetic microactuatorventricular catheter

Identifiers

PMID29151776
PMCPMC5693250

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.