Capacitive RF Electrodes for Penile Tissue Heating
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Solution Overview
Problem
Current treatments for erectile dysfunction, such as PDE5 inhibitors and radiofrequency energy, do not effectively address the lack of spontaneity and variability in response among patients, and there is a need for a method that improves blood circulation and tissue heating without direct galvanic contact.
Innovation Solution
A method using large area RF electrodes positioned along the penis with one electrode at the distal part and another under the bulb, employing capacitive contact through a dielectric layer to deliver RF energy, which heats the penile tissue and improves blood circulation, potentially combined with other forms of energy like optical or ultrasound, and mechanical stretching to enhance blood flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If direct galvanic contact between electrode and tissue is used, then efficient energy delivery is achieved, but patient safety is compromised and cross-contamination risk increases
Solution Approach 1:
A dielectric layer is introduced as an intermediary between the RF electrode and the penile tissue. This dielectric barrier prevents direct galvanic contact, eliminating the risk of cross-contamination and electrical shock to the patient, while still allowing efficient RF energy delivery through capacitive coupling. The dielectric layer acts as a mediator that enables energy transfer without direct contact.
Solution Approach 2:
The patent replaces direct mechanical/galvanic contact between electrode and tissue with capacitive coupling through the dielectric layer. This substitution eliminates the harmful effects of direct contact while maintaining effective energy delivery through the electromagnetic field generated by the RF current across the dielectric barrier.
2Use of energy by moving object
If high RF frequency is used, then energy delivery through dielectric layer is improved, but impedance of dielectric layer decreases
Solution Approach 1:
The patent utilizes the frequency-dependent impedance characteristic of the dielectric layer. By operating at high RF frequencies (typically 27.12 MHz or other suitable frequencies), the impedance of the dielectric layer is reduced, allowing efficient energy delivery through the barrier. This parameter change (frequency) transforms the dielectric from a blocking element to an effective energy transmission medium.
3Temperature
If tissue temperature is raised above 50°C, then revascularization stimulation is enhanced, but thermal coagulation occurs
Solution Approach 1:
The system incorporates temperature monitoring and control mechanisms to maintain tissue temperature within the therapeutic window (below 50°C). Feedback from temperature sensors allows real-time adjustment of RF power delivery, ensuring that the tissue is heated sufficiently to stimulate revascularization and collagen production while preventing excessive heating that would cause thermal coagulation and tissue damage.
Solution Approach 2:
The RF energy delivery is applied in controlled sessions with appropriate duration and intensity modulation. By using periodic application of RF energy rather than continuous high-power delivery, the system achieves cumulative thermal effects for tissue remodeling while allowing heat dissipation to prevent temperature runaway and thermal coagulation.
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 effectively heats the penile tissue to stimulate revascularization and collagen production without thermal coagulation, improving blood circulation and treating erectile dysfunction by maintaining tissue temperatures below 50°C, with adjustable treatment parameters and a user-friendly applicator design.
Implementation Method 1
RF energy may be delivered through the displacement current in the dielectric layer. This method allows avoiding direct galvanic contact between the electrode and tissue
Implementation Method 2
The RF current flows between the first electrode and second electrode along the axes of the penis heating the entire length of the penile tissue
Implementation Method 3
Each electrode may have capacitive contact with the tissue. The electrode may be covered by a dielectric material isolating the electrode from direct contact with tissue
Implementation Method 4
The RF current heats the tissue to stimulate revascularization, collagen production and blood circulation without thermal coagulation of the tissue. The heating temperature may be below 50° C. for peak temperature and below 45° C. for the average temperature
Data Source
AI summary
A method for treatment of erectile dysfunction uses radiofrequency (RF) energy applied to the patient in proximity to the penile bulb.