Selective Nerve Activation for Brown Adipose Tissue Stimulation
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Solution Overview
Problem
Current methods for treating obesity, including surgical procedures and pharmaceutical approaches, are limited in effectiveness and often come with undesirable side effects, and there is a need for non-invasive techniques to activate brown adipose tissue (BAT) to increase energy expenditure and metabolic rate.
Innovation Solution
The use of electrical energy to selectively activate sympathetic nerves in BAT without activating parasympathetic or sensory nerves, using devices that deliver electrical signals with specific current and pulse width parameters to stimulate thermogenesis and weight loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If surgical procedures are used to treat obesity, then weight loss can be achieved, but postoperative pain, wound infection risk, and recovery time increase
Solution Approach 1:
The patent replaces mechanical surgical intervention with electrical field stimulation to activate brown adipose tissue. Instead of physically altering the body through surgery, the invention uses non-invasive electrical signals to stimulate sympathetic nerves and activate BAT, thereby achieving weight loss without surgical trauma, pain, or infection risk.
Solution Approach 2:
The patent introduces brown adipose tissue as an intermediary mechanism to achieve weight loss. Electrical stimulation activates BAT, which then metabolizes fat through thermogenesis. This intermediary biological system mediates the weight loss effect without requiring direct surgical intervention on the gastrointestinal tract or other organs.
2Manufacturing precision
If electrical signals are delivered to activate BAT, then selective nerve activation can be achieved, but precise control of current and pulse width parameters is required
Solution Approach 1:
The patent utilizes specific electrical parameter ranges (current: 1-1000 μA, pulse width: 10-1000 μs) to achieve selective activation of sympathetic nerves in BAT. By optimizing these parameters, the invention distinguishes between different nerve types based on their electrical thresholds, enabling selective stimulation without activating parasympathetic or sensory nerves.
Solution Approach 2:
The patent replicates the natural sympathetic nervous system activation pattern that occurs during cold exposure. The electrical signals mimic physiological conditions that naturally activate BAT, thereby achieving selective nerve activation through biologically relevant parameter patterns rather than arbitrary electrical stimulation.
3Ease of operation
If transcutaneous electrical delivery is used, then non-invasive treatment can be achieved, but signal penetration depth and tissue impedance affect delivery efficiency
Solution Approach 1:
The patent employs pulsed electrical delivery rather than continuous signals. The periodic pulsing allows tissue impedance to reset between pulses, improving signal penetration efficiency. The intermittent nature of pulsed delivery also reduces overall energy consumption compared to continuous stimulation while maintaining effective BAT activation during pulse periods.
Solution Approach 2:
The patent uses adjustable electrical parameters that can be dynamically optimized based on individual patient characteristics, tissue impedance measurements, and treatment response. This dynamic adaptation allows the system to overcome variable tissue impedance barriers and achieve efficient signal penetration without requiring excessive energy input.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach allows for increased energy expenditure and weight loss without surgical intervention or pharmaceuticals, improving metabolic outcomes and reducing comorbidities associated with obesity, such as Type II diabetes and high blood pressure.
Implementation Method 1
activating the device to transcutaneously deliver an electrical signal to the patient so as to activate a first nerve type in the BAT
Data Source
AI summary
Methods and devices are provided for activating brown adipose tissue (BAT) using electrical energy. In general, the methods and devices can facilitate activation of BAT to increase thermogenesis. The BAT can be activated by applying an electrical signal thereto that can be configured to target sympathetic nerves that can directly innervate the BAT. The electrical signal can be configured to target the sympathetic nerves using fiber diameter selectivity. In other words, the electrical signal can be configured to activate nerve fibers having a first diameter without activating nerve fibers having diameters different than the first diameter. Sympathetic nerves include postganglionic unmyelinated, small diameter fibers, while parasympathetic nerves that can directly innervate BAT include preganglionic myelinated, larger diameter fibers. The electrical signal can be configured to target and activate the postganglionic unmyelinated, small diameter fibers without activating the preganglionic myelinated, larger diameter fibers.