Implantable LES Stimulation Device for tLESR Treatment
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Solution Overview
Problem
Current treatments for transient lower esophageal sphincter relaxation (tLESR) are inadequate, as they often require daily medication, are not universally effective, and can interfere with swallowing, leading to a need for a safe and efficient method that does not rely on instantaneous LES responses and can be easily deployed without complex physiologic sensing mechanisms.
Innovation Solution
A system comprising electrodes and a waveform generator controlled by a controller to electrically stimulate the lower esophageal sphincter (LES), maintaining an average pressure above a certain level to reduce tLESR symptoms, with adjustable stimulation parameters based on sensed data and a programmable schedule to minimize medication reliance and ensure effective treatment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electrical stimulation is applied to maintain LES pressure, then tLESR symptoms are reduced, but swallowing function may be interfered with
Solution Approach 1:
The patent implements periodic electrical stimulation with defined on-periods and off-periods. During off-periods, the LES pressure is allowed to return to baseline, permitting normal swallowing function. During on-periods, stimulation is applied to maintain elevated LES pressure and reduce tLESR symptoms. This periodic cycling resolves the contradiction by providing treatment benefits while preserving swallowing capability during non-stimulation intervals.
Solution Approach 2:
The stimulation system dynamically adjusts between different states (stimulated and non-stimulated) based on therapeutic needs and swallowing cycles. The controller modulates stimulation parameters including duration, frequency, and intensity to balance symptom control with preservation of normal esophageal function, particularly during swallowing events.
2Measurement precision
If complex physiologic sensing mechanisms are used to control stimulation, then treatment precision is improved, but device complexity increases
Solution Approach 1:
The patent extracts and eliminates complex physiologic sensing mechanisms from the implantable device. Instead of incorporating sophisticated sensors to detect LES pressure and trigger stimulation, the system uses a simplified approach with predetermined timing parameters. The controller is programmed with fixed on-periods and off-periods, removing the need for complex real-time physiological monitoring while maintaining effective treatment.
Solution Approach 2:
The stimulation system operates autonomously using predetermined programming rather than requiring complex feedback sensing. The controller automatically cycles stimulation based on pre-set parameters, providing self-regulated treatment without needing elaborate sensing infrastructure. This self-service approach reduces device complexity while maintaining therapeutic efficacy through programmable timing sequences.
3Stress or pressure
If continuous electrical stimulation is applied, then LES pressure is maintained, but medication dependency increases and side effects occur
Solution Approach 1:
The system employs periodic rather than continuous stimulation, creating cycles of treatment and rest. During on-periods, electrical stimulation maintains LES pressure to prevent reflux. During off-periods, stimulation ceases, allowing the tissue to rest and reducing cumulative side effects. This periodic approach replaces the need for continuous medication while maintaining therapeutic benefits, thereby reducing medication dependency and associated side effects.
Solution Approach 2:
The periodic stimulation provides continuous therapeutic action over time through repeated cycles rather than requiring continuous high-intensity stimulation. The cumulative effect of multiple stimulation cycles maintains long-term LES pressure control and symptom reduction, replacing chronic medication use with intermittent electrical therapy that achieves sustained therapeutic outcomes with fewer side effects.
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
The system effectively reduces the frequency and intensity of tLESR symptoms by maintaining elevated LES pressure during and after stimulation, allowing for normal swallowing and reducing the need for continuous medication, while being minimally invasive and easy to deploy.
Implementation Method 1
a waveform generator coupled to the electrodes; and a controller to electrically stimulate the lower esophageal sphincter
Data Source
AI summary
The present specification discloses devices and methodologies for the treatment of transient lower esophageal sphincter relaxations (tLESRs). Individuals with tLESRs may be treated by implanting a stimulation device within the patient's lower esophageal sphincter and applying electrical stimulation to the patient's lower esophageal sphincter, in accordance with certain predefined protocols. The presently disclosed devices have a simplified design because they do not require sensing systems capable of sensing when a person is engaged in a wet swallow and have improved energy storage requirements.