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TWITCHER: a device to stimulate thumb twitch response to ulnar nerve stimulation
S Lampotang1, M L Good, P M Heijnen
1Department of Anesthesiology, University of Florida College of Medicine, University of Florida Brain Institute, Gainesville 32610-0254, USA. sem@anest4.anest.ufl.edu
Journal of Clinical Monitoring and Computing
|July 21, 1998
Summary
A novel device, the TWITCHER, simulates thumb adduction from ulnar nerve stimulation. This tool enhances training for neuromuscular blocking drugs in patient simulators.
Area of Science:
- Medical Simulation
- Neurophysiology
- Anesthesiology
Background:
- Accurate simulation of neuromuscular function is crucial for medical training.
- Evaluating neuromuscular blockade requires reliable methods to assess muscle response.
- Existing simulation tools may lack the specificity for evoked thumb adduction.
Purpose of the Study:
- To design and fabricate a device simulating evoked thumb adduction.
- To provide a realistic response to ulnar nerve stimulation for training purposes.
Main Methods:
- Implementation of a computer-controlled, motorized thumb device (TWITCHER).
- Integration with an unmodified peripheral nerve stimulator for ulnar nerve stimulation.
- Generation of clinically relevant response patterns for various muscle relaxants and stimulation modes (single twitch, train-of-four, tetanus).
Main Results:
- The TWITCHER device has been successfully utilized in a full-scale patient simulator for six years.
- The device effectively simulates evoked thumb adduction in response to ulnar nerve stimulation.
Conclusions:
- The TWITCHER device has been positively received by participants in simulation exercises.
- The device is valuable for training scenarios involving neuromuscular blocking drugs.
