Disposable Urethral Plug for Urine Flow Control

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Solution Overview

Problem

Current incontinence management solutions are inadequate, as they are often cumbersome, uncomfortable, expensive, and ineffective in addressing urinary incontinence, erectile dysfunction, and urinary tract issues, with a lack of discreet, comfortable, and sanitary options for urethral insertion.

Innovation Solution

A cylindrical device made of absorbent materials that expands upon contact with urine, designed for urethral insertion, featuring a mesh covering and a withdrawal string, optionally with lubricating and active agents, allowing for easy placement and removal without anchors or balloons, and is biodegradable or recyclable.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional incontinence devices (catheters, slings, artificial sphincters) are used, then urine flow control is achieved, but device complexity and surgical intervention requirements increase

Engineering Contradiction:
Improveurine flow controlVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent employs disposable urethral plugs made from biodegradable materials that can be inserted and removed without surgical intervention. These single-use devices eliminate the complexity of permanent implants while providing reliable temporary urine flow control, directly addressing the contradiction between reliability and device complexity

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The invention extracts the essential function of urine flow control from complex surgical devices (slings, artificial sphincters) and implements it through a simple insertable plug. By removing unnecessary structural elements and focusing only on the core occlusion function, the device achieves reliability without complexity

Inventive Principle:
Principle #2Taking out (Extraction)

2Reliability

If indwelling catheters are used, then urine collection is achieved, but discomfort and risk of infection increase

Engineering Contradiction:
Improveurine collectionVSAvoiddiscomfort and infection risk
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The disposable nature of the plug eliminates the prolonged indwelling period required by traditional catheters, thereby reducing discomfort and infection risk while maintaining reliable urine collection during the brief insertion period

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The device changes its physical parameters (expanding from compressed to expanded state) upon contact with urine, enabling effective urine collection without requiring the continuous indwelling presence that causes discomfort and infection in traditional catheters

Inventive Principle:
Principle #35Parameter changes

3Stability of the object's composition

If balloon-anchored plugs are used, then device anchoring is achieved, but bladder trigone irritation and pain increase

Engineering Contradiction:
Improvedevice anchoringVSAvoidbladder trigone irritation
Core Design Contradiction:
Stability of the object's compositionVSObject-affected harmful factors

Solution Approach 1:

The invention removes the balloon anchoring mechanism entirely, relying instead on the natural geometry of the urethra and the expanded plug material to provide sufficient anchoring. This extraction of the harmful balloon element eliminates bladder trigone irritation while maintaining device stability

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The plug material itself acts as an intermediary between the urethral walls, providing anchoring through friction and geometric interlocking rather than through a separate balloon mechanism that irritates the bladder trigone

Inventive Principle:
Principle #24Intermediary (Mediator)

4Reliability

If externally compressive devices (vaginal inserts, condoms) are used, then urine flow obstruction is achieved, but comfort and discretion decrease

Engineering Contradiction:
Improveurine flow obstructionVSAvoidcomfort and discretion
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The device is inserted inside the urethra, nesting the occlusion function within the natural anatomy rather than applying external compression. This internal placement provides reliable urine flow obstruction while being discreet and comfortable, as it is invisible and does not require external application

Inventive Principle:
Principle #7Nested doll (Nesting)

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 provides effective urine absorption and flow obstruction, is easy to use, minimally discomforting, and environmentally friendly, while allowing for sexual activity and reducing the need for costly medical interventions.

Implementation Method 1

said body comprised of absorbent material that expands upon contact with urine or bodily fluid

Methodology Applied
Scientific EffectAbsorption: Absorption (physical)

Implementation Method 2

featuring a mesh covering

Methodology Applied
Scientific EffectPermeation: Permeation

Data Source

PatentUS11246693B2Urinary plug device
Publication Date: 2022.02.15 HESSE DAVID
  • US11246693B2 patent drawing
  • US11246693B2 patent drawing
  • US11246693B2 patent drawing

AI summary

A disposable device for absorbing urine and/or bodily fluids in the urethra having a cylindrical body about 4-8 mm in diameter by about 3-5 cm in length and having a top and bottom end. The body is made of absorbent material that expands upon contact with urine and bodily fluids and includes a string connected to the bottom end of the body for removing the device from the urethra. The device can be used to treat urinary incontinence and/or erectile dysfunction by inserting into the urethra and removing the device after it has been impregnated with fluid. The device can be included in a kit with a plunger for insertion.