Office for Technology Commercialization
http://www.research.umn.edu/techcomm
612-624-0550

Select Optimal Therapeutic Parameters for Medical Stimulation Devices

Technology #20180212

Questions about this technology? Ask a Technology Manager

Download Printable PDF

Image Gallery
Gaussian process approximation (solid line) of the underlying objective function (dotted line); 95% confidence interval (shaded region around the lines) and acquisition function (shaded area along bottom)Bayesian optimization for stimulation device
Categories
Researchers
Tay Netoff, PhD
Associate Professor, Biomedical Engineering
External Link (www.neuroscience.umn.edu)
Andy Lamperski, PhD
Assistant Professor, Electrical and Computer Engineering
External Link (ece.umn.edu)
Bryan Moore
Assistant Professor, Neurology
External Link (www.neurology.umn.edu)
Managed By
Kevin Nickels
Technology Licensing Officer 612-625-7289
Patent Protection

Provisional Patent Application Filed

Adaptive dual controller selects optimal parameters, measures outcomes

A Bayesian optimization algorithm can be used for selecting and tuning operational parameters of medical stimulation devices such as deep brain stimulators (DBS) and spinal cord stimulators. The algorithm helps select the optimal set of parameters to test so as to find the therapeutic minimum/maximum in as few evaluations as possible. This optimization approach may be used in a wide range of medical devices used to treat a variety of diseases. The system adaptively controls electronic stimulation devices (e.g., closed-loop stimulation devices) using a feedback controller and a Bayesian optimization loop. The adaptive dual controller handles process variation by both controlling the process and also perturbing the process to learn how it responds, leading to better future control. The algorithm could be embedded in devices that evaluate therapeutic outcomes (e.g., a tablet computer that uses a questionnaire to measure therapy effects, a computer that quantitatively measures therapy effects through robotic inputs, or an implanted device that measures biomarkers and directly adjusts therapy parameters).

Methodical, data-driven search

Current methods for selecting stimulation parameters simply rely on trial and error, so evaluating the efficacy of a set of stimulation parameters can take many minutes, hours, or even days. For example, a clinician working with a deep brain stimulation (DBS) patient may try several different settings to find a set of parameters that achieves a therapeutic effect while avoiding side effects. This algorithm replaces such trial-and-error attempts with a methodical, data-driven search. Bayesian optimization builds and uses a model of the therapeutic response to recommend parameters to find the therapeutic minimum/maximum in as few evaluations as possible.

Phase of Development

  • Algorithm tested in a computational model.

Benefits

  • Replaces trial-and-error attempts with a methodical, data-driven search
  • Applicable to a wide range of medical devices used to treat a variety of diseases

Features

  • Adaptive dual controller: feedback controller and Bayesian optimization loop
  • Adaptively controls electronic stimulation devices
  • Embedded in devices that evaluate therapeutic outcomes

Applications

  • Medical devices
  • Electrical stimulation devices with controllable parameters (e.g., deep brain stimulators, spinal cord stimulators, peripheral nerve stimulators, drug pumps, transcranial electrical stimulation, transcranial alternating current stimulation, transcranial magnetic stimulation, and ultrasound therapies)
  • Therapies for treating diseases such as Parkinson's disease, epilepsy, essential tremor, dystonia, depression, diabetes, obesity, obsessive compulsive disorder


Interested in Licensing?
The University relies on industry partners to further develop and ultimately commercialize this technology. The license is for the sale, manufacture or use of products claimed by the patents. Please contact Kevin Nickels to share your business needs and licensing and technical interests in this technology.