Electromagnetic Urinary Sphincter Closure for Retrograde Ejaculation

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing treatments for retrograde ejaculation, such as medications and surgeries, have significant side effects or uncertain success rates, and there is a need for a more effective solution to prevent semen from entering the bladder during ejaculation.

Innovation Solution

A device and method using electromagnetically controlled magnetizable metal objects, such as rods or cylinders, are implanted around the internal urinary sphincter to selectively close and reopen the sphincter, preventing retrograde ejaculation by controlling magnetic polarities to attract or repel the objects and regain sphincter elasticity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Force

If TURP surgery is performed to remove enlarged prostate tissue, then the flow of urine is blocked, but the elasticity of the internal urethral sphincter is damaged causing retrograde ejaculation

Engineering Contradiction:
Improveurine flow blockingVSAvoidsphincter elasticity
Core Design Contradiction:
ForceVSReliability

Solution Approach 1:

The patent replaces the mechanical surgical intervention (TURP) with an electromagnetic system. Electromagnets are implanted around the sphincter to provide mechanical closure force through magnetic attraction, substituting the need for surgical tissue removal while preserving sphincter integrity and elasticity.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The implanted electromagnet system allows the patient to self-control sphincter closure. The patient can activate the electromagnets voluntarily to close the sphincter during ejaculation, enabling self-management of retrograde ejaculation without requiring ongoing medical intervention or medication.

Inventive Principle:
Principle #25Self-service

2Reliability

If medications (Alpha-Adrenergic Agonists) are used to strengthen bladder neck muscles, then retrograde ejaculation is alleviated, but side effects such as high blood pressure, rapid heart rate, and urinary retention occur

Engineering Contradiction:
Improvebladder neck muscle strengthVSAvoidside effects
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces pharmacological intervention with an electromagnetic mechanical system. Instead of using medications to stimulate muscle contraction, electromagnets directly provide the mechanical force needed to close the sphincter, eliminating exposure to pharmaceutical side effects while achieving the same functional outcome.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The electromagnets act as an intermediary between the patient's neural control and the sphincter muscle. Rather than using chemicals (medications) to transmit the signal to strengthen muscles, the electromagnetic field serves as the intermediary to directly induce muscle contraction and sphincter closure.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Reliability

If surgery is performed to restore bladder neck anatomy, then retrograde ejaculation may be treated, but the procedure is invasive, has long recovery period, and uncertain success rate

Engineering Contradiction:
Improvebladder neck anatomy restorationVSAvoidsurgical invasiveness
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces complex surgical reconstruction with a simpler electromagnetic implantation procedure. Instead of performing invasive surgery to restore anatomical structures, the system uses implanted electromagnets to functionally restore sphincter closure through magnetic force, reducing surgical complexity and recovery time.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the approach from anatomical restoration to functional restoration. Rather than attempting to surgically reconstruct the original anatomical structure of the bladder neck, the system changes the parameter of control from structural integrity to electromagnetic-induced muscle contraction, achieving the desired function through a different physical mechanism.

Inventive Principle:
Principle #35Parameter changes

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 device effectively prevents retrograde ejaculation by allowing controlled closure and reopening of the sphincter, thereby preventing infertility and urinary incontinence, with minimal invasiveness and no side effects.

Implementation Method 1

a series of wires connecting the at least two batteries to alternating magnetizable metal objects of the series of magnetizable metal objects to provide at least a first circuit and a second circuit, respectively... when each SPST switch is activated, each respectively completes at least a first electric circuit allowing a first electric current and a second electric circuit allowing a second electric current, respectively, to separately magnetize each magnetizable metal object

Methodology Applied
Scientific EffectElectromagnetism: Electromagnet

Implementation Method 2

each of the odd-numbered alternating magnetizable metal objects are magnetized and each of the even-numbered alternating magnetizable metal objects are magnetized with attractive magnetic polarities such that each magnetizable metal object of the series of magnetizable metal objects are configured to be attracted to each other to close the internal urinary sphincter

Methodology Applied
Scientific EffectMagnetic attraction: Magnetism

Implementation Method 3

reversing polarity of each of the even-numbered alternating magnetizable metal objects to enable a repulsion mode in which each of the odd-numbered alternating magnetizable metal objects and each of the even-numbered alternating magnetizable metal objects are magnetized with repulsive magnetic polarities such that each magnetizable metal object of the series of magnetizable metal objects are configured to separate from one another to forcibly reopen the internal urinary sphincter

Methodology Applied
Scientific EffectMagnetic repulsion: Magnetism

Data Source

PatentUS20250339253A1Device, method, and system for sphincter closing and reopening to treat infertility caused by retrograde ejaculation
Publication Date: 2025.11.06 UNITED ARAB EMIRATES UNIVERSITY
  • US20250339253A1 patent drawing
  • US20250339253A1 patent drawing
  • US20250339253A1 patent drawing

AI summary

A device, system, and method for closing and reopening a sphincter in a body, such as for closing and opening an internal urinary sphincter of a bladder, thereby blocking retrograde ejaculation, by employing controllable electromagnets. Using the present device, system, and method, the patients can selectively close their bladder's sphincter as desired, for example, to selectively block retrograde ejaculation, preventing semen from entering the bladder of the patient and thereby preventing infertility of the patient. The solution helps regain the elasticity function of the sphincter to allow it to close as per normal to prevent retrograde ejaculation. A series of magnetizable metal objects are positioned in or surrounding the bladder wall at the junction with the urethra, with each of the magnetizable metal objects being electromagnetically controlled to have a controllable closing/reopening of the bladder's sphincter, thereby preventing retrograde ejaculation while also allowing the passage of urine as per normal.