Cited by 332Advanced Materials and MechanicsPhotodynamic Therapy Research StudiesLaser and Thermal Forming Techniques

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Photothermal properties of shape memory polymer micro‐actuators for treating stroke*

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Maitland, Duncan J., Metzger, Melodie F., Schumann, Daniel, Lee, Abraham, Wilson, Thomas S.·2002·Lasers in Surgery and Medicine

DOI 10.1002/lsm.10007

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Abstract

Background and Objectives: In this paper the photothermal engineering issues of novel shape memory polymer (SMP) microactuators for treating stroke are presented. The engineering issues for using lasers to heat and subsequently actuate these SMP devices are presented in order to provide design criteria and guidelines for intravascular, laser activated SMP devices. Materials and Methods: A total of three devices will be presented: two interventional ischemic stroke devices (coil and umbrella) and one device for releasing embolic coils (microgripper). The optical properties of SMP, methods for coupling laser light into SMP, heating distributions in the SMP devices, and the impact of operating the thermally activated material in a blood vessel are presented. Results: Actuating the devices requires device temperatures in the range of 65–85°C. Attaining these temperatures under flow conditions requires critical engineering of the SMP optical properties, optical coupling into the SMP, and device geometries. Conclusion: Laser‐activated SMP devices are a unique combination of laser‐tissue and biomaterial technologies. Successful deployment of the microactuator requires well‐engineered coupling of the light from the diffusing fiber through the blood into the SMP. Lasers Surg. Med. 30:1–11, 2002. © 2002 Wiley‐Liss, Inc.

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Authors: Maitland, D. J., Metzger, M. F., Schumann, D., Lee, A., & Wilson, T. S.
Affiliations: Lawrence Livermore National Laboratory (US)
Corresponding author: Maitland, Duncan J.
ORCID: Maitland, Duncan J.
Metzger, Melodie F.
Lee, Abraham
Wilson, Thomas S.
Venue: Lasers in Surgery and Medicine
Publisher: Wiley
Published: 2002-01
Volume: 30
Issue: 1
Pages: 1-11
ISSN: 0196-8092 (ISSN-L)
1096-9101
DOI: 10.1002/lsm.10007
OpenAlex: W2046465854
Cited by: 332
References: 18
Citations by year: 2026: 3 · 2025: 7 · 2024: 8 · 2023: 7 · 2022: 10 · 2021: 16 · 2020: 19 · 2019: 14 · 2018: 19 · 2017: 17 · 2016: 26 · 2015: 33 · 2014: 17 · 2013: 19 · 2012: 18
FWCI: 12.21
Type: journal article
Language: en
Open access: green
digital.library.unt.edu
Licence: onlinelibrary.wiley.com/termsAndConditions#vor (vor, 3 d)
Locations: Lasers in Surgery and Medicine (publishedVersion)
PubMed (publishedVersion)
University of North Texas Digital Library (University of North Texas) (submittedVersion)
OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
Funders: Lawrence Livermore National Laboratory
Topics: Physical Sciences › Engineering › Mechanical Engineering › Advanced Materials and Mechanics
Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Photodynamic Therapy Research Studies
Physical Sciences › Engineering › Computational Mechanics › Laser and Thermal Forming Techniques
Keywords: shape memory polymers, photothermal properties, microactuators, ischemic stroke, intravascular devices, optical coupling, laser heating, microgripper
MeSH terms: Intracranial Aneurysm, Chemistry, Physical, Embolization, Therapeutic, Hot Temperature, Humans, Lasers, Models, Cardiovascular, Models, Structural, Polymers, Thermodynamics, Stroke, Optics and Photonics, Chemical Phenomena

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Photothermal properties of shape memory polymer micro‐actuators for treating stroke*

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