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Micron: Intelligent Microsurgical Instruments Head: Cameron Riviere Contact: Cameron Riviere (cam.riviere@cs.cmu.edu) Mailing address: MRT Center The Robotics Institute Carnegie Mellon University 5000 Forbes Avenue Pittsburgh PA 15213-3890 (412) 268 6553 (Jim Osborn, Executive Director) (412) 268 6436 (FAX) Associated center: MRTC Associated lab/group: Medical Instrumentation Lab For more information, see this project's homepage.

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Project Description

Positioning error is inherent in normal human hand motion. This includes components such as physiological tremor and jerk. For a surgeon performing microsurgery, involuntary hand motion limits the accuracy with which he or she operates. This problem is especially significant in the fields of ophthalmological and neurological surgery. To deal with this problem, we are developing an intelligent active hand-held instrument for ophthalmological microsurgery. This instrument senses its own motion, distinguishes between desired and undesired motion using advanced filtering techniques, and actively compensates for undesired motion by an equal but opposite deflection of its own tip. A full prototype, with six sensors and three actuators, has been completed and preliminary tests have demonstrated attenuation of tremor-like oscillations by as much as 50%.

Personnel [Past Members]

	Name	Title	Email Address
	Brian Becker	PhD Student, RI	brianbec@andrew.cmu.edu
	Robert MacLachlan	Project Supervisor	ram@ri.cmu.edu
	Gregg Podnar	Program Manager	gwp@cmu.edu
	Cameron Riviere	Associate Research Professor, RI/Bio Med	cam.riviere@cs.cmu.edu

Recent publications [View all 33 publications]

• Test of Tracing Performance with an Active Handheld Micromanipulator
  D. Choi, R. Sandoval Garcia, R. MacLachlan, L. Ho, L. Lobes, and C. Riviere
  Proceedings of the 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, August, 2007, pp. 3638-3641. [Abstract]
  Download: pdf [292 KB] copyrighted

• Feedforward Controller With Inverse Rate-Dependent Model for Piezoelectric Actuators in Trajectory-Tracking Applications
  W. Ang, P. Khosla, and C. Riviere
  IEEE/ASME Transactions on Mechatronics, Vol. 12, No. 2, April, 2007, pp. 134-142. [Abstract]
  Download: pdf [368 KB] copyrighted

• Nonlinear Regression Model of a Low-g MEMS Accelerometer
  W. Ang, P. Khosla, and C. Riviere
  IEEE Sensors Journal, Vol. 7, No. 1, January, 2007, pp. 81-88. [Abstract]
  Download: pdf [703 KB] copyrighted

• Optical Tracking for Performance Testing of Microsurgical Instruments
  R. MacLachlan and C. Riviere
  tech. report CMU-RI-TR-07-01, Robotics Institute, Carnegie Mellon University, January, 2007. [Abstract]
  Download: pdf [294 KB] copyrighted

• Performance Envelope and Physiological Tremor in Microsurgery
  D. Ortega Ibanez, F. Perez Baquerin, D. Choi, and C. Riviere
  Proceedings of the IEEE 32nd Annual Northeast Bioengineering Conference, April, 2006, pp. 121 - 122. [Abstract]
  Download: pdf [167 KB] copyrighted

• Flexure-based Manipulator for Active Handheld Microsurgical Instrument
  D. Choi and C. Riviere
  Proceedings of the 27th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBS), September, 2005, pp. 2325 - 2328. [Abstract]
  Download: pdf [488 KB] copyrighted

• Inverse Kinematic Model of Flexure-Based Microsurgical Manipulator
  J.G. Avedillo, D. Choi, and C. Riviere
  Proceedings of the 27th Annual International Conference of the Engineering in Medicine and Biology Society (EMBS 2005), September, 2005, pp. 5775 - 5777. [Abstract]
  Download: pdf [882 KB] copyrighted

• Kalman filtering for real-time orientation tracking of handheld microsurgical instrument
  W. Ang, P. Khosla, and C. Riviere
  Proceedings of the 2004 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS '04), Vol. 3, October, 2004, pp. 2574 - 2580.
  Download: pdf [769 KB] copyrighted

• Active Tremor Compensation in Handheld Instrument for Microsurgery
  W. Ang
  doctoral dissertation, tech. report CMU-RI-TR-04-28, Robotics Institute, Carnegie Mellon University, May, 2004. [Abstract]
  Download: pdf [2008 KB] copyrighted

• Physical model of a MEMS accelerometer for low-g motion tracking applications
  W. Ang, S. Khoo, P. Khosla, and C. Riviere
  Proceedings of the 2004 IEEE International Conference on Robotics and Automation (ICRA '04), Vol. 2, April, 2004, pp. 1345 - 1351. [Abstract]
  Download: pdf [556 KB] copyrighted