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Sutha Aphanuphong Phones & Addresses

  • Lafayette, CO
  • Boulder, CO

Publications

Us Patents

Endoscope Apparatus, Actuators, And Methods Therefor

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US Patent:
2007023, Oct 11, 2007
Filed:
Apr 7, 2006
Appl. No.:
11/400065
Inventors:
Dale A. Lawrence - Louisville CO,
Sutha Aphanuphong - Boulder CO,
Assignee:
The Reagents of the University of Colorado - Boulder CO
International Classification:
A61M 31/00
A61M 25/00
A61M 37/00
US Classification:
604531, 604 9505
Abstract:
The present invention provides, in part, a dexterous endoscope apparatus, referred to herein as a MicroFlex Scope (MFS). The MFS is an novel, small diameter, e.g., less about 1 mm to about 4 mm, about 1 mm to about 3 mm, etc., dexterous endoscope that allows for access, direct visualization, tissue sampling, treatment, etc. of body lumens. In one embodiment, the distal end of the MFS of the invention is an ultra-flexible tip that comprises a plurality of thin, curved shape memory alloy (SMA) actuator elements attached to at least one structural skeleton, e.g., a coil spring skeleton or hinge structure. The SMA actuator elements in each structural skeleton segment are indirectly heated by a heater element and produce force in response to their temperature relative to specific thresholds. In certain embodiments, the heater element may include an integrated heater/sensor element adapted to heat the actuator element and to sense the temperature and bend state of the actuator element. In configurations comprising a plurality of actuator elements, multiplexing/demultiplexing of heating currents and sensor voltages may be accomplished via a parallel bus and demulitplexing circuit. In this regard, a demultiplexing circuit using standard microelectronic fabrication techniques may be designed to achieve individual sensing and control over each actuator element.

Endoscope Apparatus, Actuators, And Methods Therefor

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US Patent:
2012017, Jul 5, 2012
Filed:
Dec 23, 2011
Appl. No.:
13/336726
Inventors:
Dale A. Lawrence - Louisville CO,
Sutha Aphanuphong - Boulder CO,
Assignee:
The Regents of the University of Colorado, a body Corporate - Denver CO
International Classification:
A61B 1/005
US Classification:
600118
Abstract:
There is disclosed a MicroFlex Scope (MFS). The MFS is a dexterous endoscope providing access, direct visualization, tissue sampling, and treatment, of body lumens. In one embodiment, the distal end of the MFS is an ultra-flexible tip that comprises a plurality of thin, curved shape memory alloy (SMA) actuator elements attached to at least one structural skeleton, a coil spring skeleton or hinge structure. The SMA actuator elements in each structural skeleton segment are indirectly heated by a heater element and produce force in response to their temperature relative to specific thresholds. In configurations comprising a plurality of actuator elements, multiplexing/demultiplexing of heating currents and sensor voltages may be accomplished via a parallel bus and demulitplexing circuit. In this regard, a demultiplexing circuit using standard microelectronic fabrication techniques may be designed to achieve individual sensing and control over each actuator element.
Sutha Aphanuphong from Lafayette, CO, age ~42 Get Report