Haptic devices deliver more realistic, and safer medical training
28 January 2009
SensAble Technologies, Inc highlighted novel touch-enabled
applications for medical training and simulation using the company’s
haptic devices and software at the Medicine Meets Virtual Reality (MMVR)
conference in Long Beach California last week.
These include a skin cancer punch-biopsy training application already
piloted by seven medical schools, and a spinal implant training
application that prevents physicians from harmful radiation exposure.
SensAble also is showcasing advanced haptic capabilities for medical
simulation made easier by its just-released OpenHaptics version 3.0
software development toolkit for creating touch-enabled applications.
Surgeons need between 60 and 500 repetitions of a procedure to
achieve proficiency1 — yet medical schools usually provide 10 to 20
repetitions on cadavers, with the rest of training left to supervised
surgery. Touch-enabled computer simulation and training applications are
on the rise as a practical way to enhance surgical training, reduce
risks for patients and doctors, and measure proficiency.
Studies show that touch-enabled training where students use a
precision force-feedback haptic device improves skill acquisition2,
while presenting zero risk to patients, decreasing operating room and
instructor time, and allowing clinicians unlimited practice in a
realistic setting as their performance is measured and tallied.
“We have created several extremely realistic touch-enabled training
applications using SensAble’s haptic devices and software,” said Don
Stredney, research scientist at the Ohio Supercomputer Center and
director of its Interface Lab. “We look forward to the integration of
our efforts with SensAble’s new APIs, specifically the depth of
penetration feature in OpenHaptics 3.0. SensAble’s products and software
continue to provide cost-efficient solutions that promote the wider
adoption of multimodal simulations for education and training.”
Spinal Implant Surgery Simulator, created by Simulution for Zimmer
Spine (formerly Abbott Spine) to train surgeons on the exact “feel” of
the company’s PathFinder spinal implant technology — with zero risk to
patient or clinician. Extreme skill is required to tighten the pedicle
screw that is used in the process of fusing vertebrae — yet traditional
cadaver-based training approaches are risky, forcing surgeons to undergo
long periods of exposure to radiation, as they learned to view the
fluoroscopic image and determine the exact placement of the pedicle
screw.
In Simulution’s CyberSpine system, surgeons in training hold a
SensAble PHANTOM haptic device in place of the canulation tool and
screwdriver used to tighten the screw. The PHANTOM literally pushes back
on the surgeon’s hand, so they “feel” each step of the procedure. After
“virtual surgery”, the surgeon’s performance is tallied and scored, and
their progress can be measured over time.
“SensAble’s artificial touch allows surgeons to repeatedly practice
these high-risk surgeries in a very realistic environment, without the
traditional constraints and risks,” said Bruce D. Anderson, Ph.D.,
principal investigator at Simulution. “We see the use of haptics in our
applications as a key component in helping us improve patient safety and
outcomes through better surgical training.”
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