Adhesive Labial Retention Device for Catheter Visualization
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Solution Overview
Problem
Urinary catheterization in females is challenging due to anatomical variations, increased risk of urinary tract infections, and difficulties in maintaining sterile technique, especially in home health care settings where access and visualization are limited.
Innovation Solution
A labial retention device with adhesive wings that displaces and retains the labia, allowing for clear visualization of the urethra and vagina, freeing both hands for catheter insertion and maintaining sterile technique.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If manual labial spreading is used during catheterization, then the procedure can be performed without additional devices, but visualization of the urethra is compromised and sterile technique is difficult to maintain
Solution Approach 1:
The patent introduces a labial retention device as an intermediary tool between the nurse's hands and the patient's anatomy. This device serves as a mediator that performs the labial spreading function while allowing the nurse to maintain sterile technique and use both hands for catheter manipulation. The device includes adhesive wings that attach to the labia and a central opening that provides visualization of the urethral meatus.
2Ease of operation
If one hand is used to spread labia, then no additional retention device is needed, but both hands cannot be used for catheter manipulation
Solution Approach 1:
The labial retention device performs the self-service function of holding and spreading the labia without requiring continuous manual intervention. Once applied, the device with its adhesive wings maintains labial separation autonomously, freeing both of the nurse's hands for catheter manipulation and sterile technique maintenance throughout the procedure.
3Reliability
If sterile technique is strictly maintained, then infection risk is reduced, but the procedure becomes more time-consuming and complex in home care settings
Solution Approach 1:
The labial retention device is applied as a preliminary step before catheter insertion, establishing and maintaining sterile boundaries in advance. By pre-positioning the device with its adhesive wings to secure labial separation, the nurse creates a sustained sterile field that eliminates the need for continuous manual adjustment, thereby maintaining infection prevention standards while improving procedural efficiency.
4Ease of operation
If the catheter is reinserted after vaginal misplacement, then the catheterization task is completed, but bacteria are introduced into the urethra causing infection
Solution Approach 1:
The patent replaces the manual mechanical system of hand-based labial spreading with a device-based system that provides stable, sustained anatomical exposure. This substitution creates a more reliable and accurate visualization of the urethral meatus through the central opening, reducing the likelihood of misplacement and eliminating the need for corrective reinsertion that would compromise sterile technique and introduce bacteria.
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 facilitates accurate and aseptic catheter placement, reducing the risk of urinary tract infections by improving visualization and allowing both-handed catheter manipulation during the procedure.
Implementation Method 1
a skin-adhering adhesive material supported on the rear surface of the device
Data Source
AI summary
A labial retention device includes a body defining a pair of wings defining therebetween a central opening permitting visualization of urethral and vaginal openings when the device is in contact with a genital region of female anatomy. The body's rear surface bears skin-adhering adhesive. The body may define sidewalls for retaining labia and/or other bodily tissue in displaced positions, and may include an anterior tab and/or a posterior tab to aid in securement and/or act as a shield to prevent unwanted bodily contact. The wings of the body may be joined to form a closed loop encircling the central opening, or be joined such that the central opening is not encircled by the wings. During use, labial/urogenital tissues are displaced and adhered to the rear surface of the labial retention device, which in turn retains the displaced labia/tissues in a spread/displaced position to aid in visualization and catheter placement purposes.


