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Title: Shape memory alloy/shape memory polymer tools

Abstract

Micro-electromechanical tools for minimally invasive techniques including microsurgery. These tools utilize composite shape memory alloy (SMA), shape memory polymer (SMP) and combinations of SMA and SMP to produce catheter distal tips, actuators, etc., which are bistable. Applications for these structures include: 1) a method for reversible fine positioning of a catheter tip, 2) a method for reversible fine positioning of tools or therapeutic catheters by a guide catheter, 3) a method for bending articulation through the body's vasculature, 4) methods for controlled stent delivery, deployment, and repositioning, and 5) catheters with variable modulus, with vibration mode, with inchworm capability, and with articulated tips. These actuators and catheter tips are bistable and are opportune for in vivo usage because the materials are biocompatible and convenient for intravascular use as well as other minimal by invasive techniques.

Inventors:
;
Publication Date:
Research Org.:
The Regents of the University of California, Oakland, CA (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1175293
Patent Number(s):
6,872,433
Application Number:
09/819,111
Assignee:
The Regents of the University of California (Oakland, CA) OSTI
DOE Contract Number:  
W7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Seward, Kirk P., and Krulevitch, Peter A. Shape memory alloy/shape memory polymer tools. United States: N. p., 2005. Web.
Seward, Kirk P., & Krulevitch, Peter A. Shape memory alloy/shape memory polymer tools. United States.
Seward, Kirk P., and Krulevitch, Peter A. Tue . "Shape memory alloy/shape memory polymer tools". United States. https://www.osti.gov/servlets/purl/1175293.
@article{osti_1175293,
title = {Shape memory alloy/shape memory polymer tools},
author = {Seward, Kirk P. and Krulevitch, Peter A.},
abstractNote = {Micro-electromechanical tools for minimally invasive techniques including microsurgery. These tools utilize composite shape memory alloy (SMA), shape memory polymer (SMP) and combinations of SMA and SMP to produce catheter distal tips, actuators, etc., which are bistable. Applications for these structures include: 1) a method for reversible fine positioning of a catheter tip, 2) a method for reversible fine positioning of tools or therapeutic catheters by a guide catheter, 3) a method for bending articulation through the body's vasculature, 4) methods for controlled stent delivery, deployment, and repositioning, and 5) catheters with variable modulus, with vibration mode, with inchworm capability, and with articulated tips. These actuators and catheter tips are bistable and are opportune for in vivo usage because the materials are biocompatible and convenient for intravascular use as well as other minimal by invasive techniques.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2005},
month = {3}
}

Patent:

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