Autonomous Robotics in Medicine Michael Saracen February 11, 2009.
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Transcript of Autonomous Robotics in Medicine Michael Saracen February 11, 2009.
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Autonomous Robotics in Medicine
Michael Saracen
February 11, 2009
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Agenda
Advances in Medicine Problem Opportunity Current use of Robotics Case Studies Summary
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Advances in Medicine
Medicine continues to grow and expand regardless of economic situation
Advances are increasing lifespan Computers have entered medicine and driving new
technologies Minimally invasive procedures are driving costs and
complications down Greater demand for precision and accuracy
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Advances in Medicine
Advances in diagnostics are driving more targeted treatments Treating disease while sparing healthy tissue
Advances in imaging are altering treatment Early detection provides more options Combining modalities improves treatment
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Better Targeting
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Better Targeting
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Better Targeting
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Everything is relative…
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What we want to avoid…
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What we want to avoid…
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Why Robotics?
Mobility Repeatability Precision Accuracy
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Medical Robotics
Positioning Ultrasound
ProbeHospital Courier
Telemedicine
In-Vivo SurgeryPatient
Assistant
Mixing Chemotherapy
Drugs
Operational Procedural
Surgical Component
Non-invasiveRadiation
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Medical Robotics
Various functions Improve operational efficiencies Interact with Patient
• Patient Telemedicine
• Patient aide Employed in procedures
Types of control Autonomous – CyberKnife treatment Programmable – Robotic patient positioner Master slave – Da Vinci
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Linear Accelerator
Manipulator
ImageDetectors
X-ray Sources
IMAGINGSYSTEM
ROBOTICDELIVERYSYSTEM
TARGETING SOFTWARE
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Case Study 1
Robotic Patient Positioning
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Conventional Treatment Couch
Limited Mobility Only four degrees of freedom Fixed mechanical axis
Limited repeatability No spatial relationship between each axis Manually driven
Limited loading positions Limited treatment positions
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The Problem…
Patients can be positioned differently from simulation to treatment Cannot account for rotations
Manual movement of the couch is often jerky and less accurate Iterative process Accuracy is often compromised for time (maintain
high throughput) Complex immobilization devices are required to
position patient Breast treatments
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Current Couch Limitations
Patient marks
External Patient Marks
Simulation Treatment
Room LasersRotation Inaccuracy
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Benefits of Robotic Positioning
Room LasersRoom LasersRotation Inaccuracy
Absolution Correction
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Design Considerations
Reach Clearance Comfort Intimidation factor Footprint
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Design Considerations
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Design Considerations
A5
A6
A4
A3
A2
A1
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Safety Consideration
Software limits on robot controller Limit switches on the robot “wrist” to prevent excess
rotations Limit switches on the vertical travel Contact detection on upper arm of robot Enable button on hand pendant E-Stop button on hand controller Couch can lower for patient egress during power
outage