The Wall Apposition Evaluation for a Mechanical Embolus Retrieval Device

Xuelian Gu, Yongxiang Qi, Arthur G Erdman

Research output: Contribution to journalArticle

Abstract

A computational evaluation approach to the wall apposition of a cerebral mechanical emboli retrieval device (MERD) is presented. The typical enclosed multilattice structure, manufactured from the thin-walled Nitinol tube, consists of repeated "V"-shaped unit cells. During interventional thrombectomy, the MERD system is delivered inside an artery stenosis segment to capture emboli and restore cerebral blood flow. The wall apposition, which deteriorates during embolus capture, occurs during system migration along the tortuous intracranial vessel. The commercial finite element analysis (FEA) solver ABAQUS 6.10 Standard and user subroutine (UMAT/Nitinol) are utilized to study the ability to remain in close contact with the curved vessel wall during migration. In this numerical analysis, the influence of the contacting interference loadings on structure deformation and strain field distribution is obtained and analyzed. The results indicate that the middle segment of the MERD seriously contracts or collapses inside the curved vessel. In addition, the peak strain is in the apex flow-prone region and maintains at the safe range.

Original languageEnglish (US)
Number of pages1
JournalJournal of healthcare engineering
Volume2018
DOIs
StatePublished - Jan 1 2018

Fingerprint

Embolism
Equipment and Supplies
Subroutines
ABAQUS
Numerical analysis
Cerebrovascular Circulation
Blood
Intracranial Embolism
Finite element method
Thrombectomy
Finite Element Analysis
Pathologic Constriction
Arteries
nitinol

PubMed: MeSH publication types

  • Journal Article
  • Research Support, Non-U.S. Gov't
  • Research Support, N.I.H., Extramural
  • Research Support, U.S. Gov't, Non-P.H.S.

Cite this

The Wall Apposition Evaluation for a Mechanical Embolus Retrieval Device. / Gu, Xuelian; Qi, Yongxiang; Erdman, Arthur G.

In: Journal of healthcare engineering, Vol. 2018, 01.01.2018.

Research output: Contribution to journalArticle

@article{291ad6ee39504b51800dbd8d2c049b3c,
title = "The Wall Apposition Evaluation for a Mechanical Embolus Retrieval Device",
abstract = "A computational evaluation approach to the wall apposition of a cerebral mechanical emboli retrieval device (MERD) is presented. The typical enclosed multilattice structure, manufactured from the thin-walled Nitinol tube, consists of repeated {"}V{"}-shaped unit cells. During interventional thrombectomy, the MERD system is delivered inside an artery stenosis segment to capture emboli and restore cerebral blood flow. The wall apposition, which deteriorates during embolus capture, occurs during system migration along the tortuous intracranial vessel. The commercial finite element analysis (FEA) solver ABAQUS 6.10 Standard and user subroutine (UMAT/Nitinol) are utilized to study the ability to remain in close contact with the curved vessel wall during migration. In this numerical analysis, the influence of the contacting interference loadings on structure deformation and strain field distribution is obtained and analyzed. The results indicate that the middle segment of the MERD seriously contracts or collapses inside the curved vessel. In addition, the peak strain is in the apex flow-prone region and maintains at the safe range.",
author = "Xuelian Gu and Yongxiang Qi and Erdman, {Arthur G}",
year = "2018",
month = "1",
day = "1",
doi = "10.1155/2018/9592513",
language = "English (US)",
volume = "2018",
journal = "Journal of Healthcare Engineering",
issn = "2040-2295",
publisher = "Multi Science Publishing",

}

TY - JOUR

T1 - The Wall Apposition Evaluation for a Mechanical Embolus Retrieval Device

AU - Gu, Xuelian

AU - Qi, Yongxiang

AU - Erdman, Arthur G

PY - 2018/1/1

Y1 - 2018/1/1

N2 - A computational evaluation approach to the wall apposition of a cerebral mechanical emboli retrieval device (MERD) is presented. The typical enclosed multilattice structure, manufactured from the thin-walled Nitinol tube, consists of repeated "V"-shaped unit cells. During interventional thrombectomy, the MERD system is delivered inside an artery stenosis segment to capture emboli and restore cerebral blood flow. The wall apposition, which deteriorates during embolus capture, occurs during system migration along the tortuous intracranial vessel. The commercial finite element analysis (FEA) solver ABAQUS 6.10 Standard and user subroutine (UMAT/Nitinol) are utilized to study the ability to remain in close contact with the curved vessel wall during migration. In this numerical analysis, the influence of the contacting interference loadings on structure deformation and strain field distribution is obtained and analyzed. The results indicate that the middle segment of the MERD seriously contracts or collapses inside the curved vessel. In addition, the peak strain is in the apex flow-prone region and maintains at the safe range.

AB - A computational evaluation approach to the wall apposition of a cerebral mechanical emboli retrieval device (MERD) is presented. The typical enclosed multilattice structure, manufactured from the thin-walled Nitinol tube, consists of repeated "V"-shaped unit cells. During interventional thrombectomy, the MERD system is delivered inside an artery stenosis segment to capture emboli and restore cerebral blood flow. The wall apposition, which deteriorates during embolus capture, occurs during system migration along the tortuous intracranial vessel. The commercial finite element analysis (FEA) solver ABAQUS 6.10 Standard and user subroutine (UMAT/Nitinol) are utilized to study the ability to remain in close contact with the curved vessel wall during migration. In this numerical analysis, the influence of the contacting interference loadings on structure deformation and strain field distribution is obtained and analyzed. The results indicate that the middle segment of the MERD seriously contracts or collapses inside the curved vessel. In addition, the peak strain is in the apex flow-prone region and maintains at the safe range.

UR - http://www.scopus.com/inward/record.url?scp=85055611998&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85055611998&partnerID=8YFLogxK

U2 - 10.1155/2018/9592513

DO - 10.1155/2018/9592513

M3 - Article

C2 - 30356385

AN - SCOPUS:85055611998

VL - 2018

JO - Journal of Healthcare Engineering

JF - Journal of Healthcare Engineering

SN - 2040-2295

ER -