External Urinary Device Suction Channel Aspiration
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Solution Overview
Problem
Catheterization in healthcare settings leads to nosocomial infections and invasive procedures, particularly for urinary tract management, where catheter-related urinary tract infections (CAUTI) are common and pose significant infection risks.
Innovation Solution
A female external urinary device with a core having urine-receiving apertures, an absorbent layer, and a fabric cover, along with a suction channel and reservoir, which is secured using a pelvic belt to aspirate urine using suction, reducing the need for invasive catheterization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If catheterization is used to manage urine flow, then urine output monitoring is improved, but the risk of nosocomial infections and CAUTI increases
Solution Approach 1:
The patent introduces an external urinary collection device as an intermediary between the patient's urinary tract and the collection system. This device collects urine externally without requiring internal catheterization, thereby eliminating the direct connection between catheters and the urinary tract that causes CAUTI, while still enabling urine output monitoring through connection to collection bags and measurement systems
Solution Approach 2:
The invention extracts the urine collection function from the internal catheterization system and relocates it to an external device. By taking out the collection function from the invasive catheter and placing it in an external wearable device with collection pouches, the system maintains monitoring capability while removing the source of nosocomial infections associated with indwelling catheters
2Reliability
If indwelling catheters are used for urinary management, then urine collection reliability is improved, but patient comfort and mobility are reduced
Solution Approach 1:
The patent employs dynamic, flexible materials for the external collection device that can adapt to patient movement. The device includes flexible collection pouches and adjustable components that maintain functionality during ambulation, unlike rigid indwelling catheter systems. The wearable design allows patients to move freely while maintaining reliable urine collection through gravity-assisted flow and flexible containment
Solution Approach 2:
The invention uses flexible shell structures and thin film materials to create a wearable external collection device that conforms to the patient's body and allows movement. These flexible components maintain urine collection reliability during ambulation while providing comfort and freedom of motion, replacing the rigid constraints of indwelling catheter systems
3Object-affected harmful factors
If external urinary collection devices are used to avoid catheterization, then infection risk is reduced, but absorbency and containment capability are limited
Solution Approach 1:
The patent implements a nested structure with multiple containment levels: an inner collection pouch that directly receives urine, an outer protective shell, and additional absorbent layers. This nested design provides enhanced containment capability and absorbency equivalent to catheter systems while maintaining the infection benefits of external collection. The multi-layer nested structure ensures reliable urine management without compromising infection control
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 manages urine flow while minimizing the risk of infections by providing a non-invasive, efficient aspiration system compatible with existing urine management systems, reducing the incidence of CAUTI and allowing for ambulation with moderate absorbency.
Implementation Method 1
an interior suction channel that communicates with a suction aperture, preferably via a suction tube
Data Source
AI summary
Disclosed is a female external urinary device useful in managing urine output of a female, such as for surgical use. The urinary device generally comprises a core having a suction channel and an interior reservoir fluidically communicating with the suction channel, an absorbent layer, and a fabric cover. Desirably, the urinary device includes a moderately absorbent soaker layer disposed inwardly with respect to the core. A urinary device assembly includes the core and a pelvic belt that may be secure to the core and positioned to collect urine from a female patient.