External Urinary Catheter with Retaining Structure for Leakage Prevention
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Solution Overview
Problem
Traditional urinary catheters for men cause discomfort, urinary tract infections, and require medical assistance, with issues related to friction, adhesives, and invasive procedures.
Innovation Solution
An external urinary catheter system comprising a cylindrical collector with a retaining structure and drainage container, where the collector is urged against the body to impede urine flow, using a strap or garment, and includes air vents and cushions for comfort, allowing for non-invasive use without adhesives or medical assistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional tubular catheters are inserted into the urethra, then urine drainage is achieved, but significant discomfort and risk of urinary tract infections occur
Solution Approach 1:
The catheter system is divided into separate components: an external collector that receives urine at the penis tip, and a drainage bag connected via tubing. This segmentation eliminates the need for internal urethral insertion while maintaining drainage functionality, thereby reducing discomfort and infection risk.
Solution Approach 2:
The catheter collection function is extracted from the internal urethral environment and relocated to an external position at the penis tip. The collector gathers urine externally without requiring insertion into the urethra, thus eliminating the harmful effects of invasive placement while preserving drainage capability.
2Reliability
If condom type catheters are used, then urine collection is achieved, but friction and adhesives cause inflammation and irritation
Solution Approach 1:
The urine collection function is extracted from the condom-style enclosure that requires wrapping around the penis. Instead, an open collector receives urine at the tip without enclosing the penis, eliminating friction and adhesive contact that cause inflammation and irritation.
Solution Approach 2:
The collector acts as an intermediary structure that receives urine without requiring direct contact with the penis shaft. Urine is collected at the tip and channeled away, preventing the friction and adhesive-related irritation caused by traditional condom catheters.
3Reliability
If the external collector is urged against the body to impede urine flow, then urine leakage is prevented during sitting or laying, but pressure control must be optimized
Solution Approach 1:
The retaining structure provides dynamic pressure control that adapts to different body positions. When the user sits or lies down, gravity causes the collector to press against the urethra, automatically impeding urine flow and preventing leakage. When standing, the pressure is reduced, allowing normal urination.
Solution Approach 2:
The system utilizes changes in gravitational force and body position to modulate the pressure applied by the retaining structure. This passive parameter change mechanism automatically controls urine flow impedance without requiring active user intervention, optimizing both leakage prevention and ease of operation.
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 prevents urine leakage during sitting or laying while allowing urine flow when standing, reducing discomfort and infection risks, and enabling mobility without medical assistance.
Implementation Method 1
The external collector may include an air vent at the proximal portion. The air vent may be air permeable and liquid impermeable.
Implementation Method 2
The retaining structure may be configured to provide pressure to the user's body to impede urinary drainage from the user's penis.
Data Source
AI summary
A male external urinary catheter system includes an external collector having a proximal portion configured to receive a user's penis and a distal portion, a retaining structure configured to urge the proximal end of the external collector against the user's body adjacent the base of the penis, and a drainage container coupled to the distal portion of the external collector.