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Title: Microvalve

Abstract

Micromachined thin film cantilever actuators having means for individually controlling the deflection of the cantilevers, valve members, and rudders for steering same through blood vessels, or positioning same within a blood vessel, for example. Such cantilever actuators include tactile sensor arrays mounted on a catheter or guide wire tip for navigation and tissues identification, shape-memory alloy film based catheter/guide wire steering mechanisms, and rudder-based steering devices that allow the selective actuation of rudders that use the flowing blood itself to help direct the catheter direction through the blood vessel. While particularly adapted for medical applications, these cantilever actuators can be used for steering through piping and tubing systems.

Inventors:
 [1];  [2];  [3];  [4]
  1. (Walnut Creek, CA)
  2. (Mountain View, CA)
  3. (Berkeley, CA)
  4. (French Camp, CA)
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
871886
Patent Number(s):
5819749
Assignee:
Regents of University of California (Oakland, CA) LLNL
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
microvalve; micromachined; film; cantilever; actuators; means; individually; controlling; deflection; cantilevers; valve; rudders; steering; blood; vessels; positioning; vessel; example; tactile; sensor; arrays; mounted; catheter; guide; wire; tip; navigation; tissues; identification; shape-memory; alloy; based; mechanisms; rudder-based; devices; allow; selective; actuation; flowing; help; direct; direction; particularly; adapted; medical; applications; piping; tubing; systems; blood vessel; cantilever actuators; guide wire; sensor array; memory alloy; medical applications; particularly adapted; sensor arrays; steering mechanisms; alloy film; blood vessels; individually controlling; film cantilever; /128/

Citation Formats

Lee, Abraham P., Krulevitch, Peter A., Northrup, M. Allen, and Trevino, Jimmy C. Microvalve. United States: N. p., 1998. Web.
Lee, Abraham P., Krulevitch, Peter A., Northrup, M. Allen, & Trevino, Jimmy C. Microvalve. United States.
Lee, Abraham P., Krulevitch, Peter A., Northrup, M. Allen, and Trevino, Jimmy C. Thu . "Microvalve". United States. https://www.osti.gov/servlets/purl/871886.
@article{osti_871886,
title = {Microvalve},
author = {Lee, Abraham P. and Krulevitch, Peter A. and Northrup, M. Allen and Trevino, Jimmy C.},
abstractNote = {Micromachined thin film cantilever actuators having means for individually controlling the deflection of the cantilevers, valve members, and rudders for steering same through blood vessels, or positioning same within a blood vessel, for example. Such cantilever actuators include tactile sensor arrays mounted on a catheter or guide wire tip for navigation and tissues identification, shape-memory alloy film based catheter/guide wire steering mechanisms, and rudder-based steering devices that allow the selective actuation of rudders that use the flowing blood itself to help direct the catheter direction through the blood vessel. While particularly adapted for medical applications, these cantilever actuators can be used for steering through piping and tubing systems.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {1}
}

Patent:

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