Aspiration Pouch with Hydrocolloid Sheet for Wound Drainage
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Solution Overview
Problem
Existing drainage devices for therapies with aspiration, fistulas, dehiscences of surgical wounds, bedsores, and similar lesions are cumbersome, painful, and prone to bleeding and bacterial contamination due to complex application procedures and imperfect adhesion, leading to issues with asepsis and vacuum effectiveness.
Innovation Solution
A drainage device comprising an aspiration pouch supported by a self-adhesive hydrocolloid sheet-like element with a preformed or cut access, allowing easy application and connection to aspiration means without direct skin contact, using a detachable pouch and polyurethane compress for efficient drainage and occlusive medication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a drainage tube is inserted within the cavitary lesion and the cavity is closed by applying an adhesive film, then drainage function is achieved, but the application becomes complicated and requires qualified personnel
Solution Approach 1:
The patent combines the adhesive film and drainage tube into a single integrated device where the tube is directly attached to the film, eliminating the need for separate application steps and reducing complexity while maintaining drainage reliability
Solution Approach 2:
The drainage tube is pre-positioned and pre-attached to the adhesive film during manufacturing, so that when the device is applied to the patient, the tube is already in its correct position and connected, eliminating the need for complex intra-procedural positioning and connection steps
2Reliability
If the adhesive film is applied to cover the lesion and connect to the drainage tube, then occlusion and drainage are achieved, but contact with the irritable and sensitive skin causes discomfort and potential harm
Solution Approach 1:
The patent extracts the connecting valve and tube connection point from direct contact with the skin by positioning it on the outer surface of the adhesive film, allowing the film to maintain full contact with the skin for proper occlusion while the connection interface remains accessible and separate from the sensitive area
3Productivity
If aspiration is performed to remove liquids from the lesion, then drainage effectiveness is improved, but bleeding problems arise due to the aspiration effect at the lips of the cavity
Solution Approach 1:
The patent introduces a polyurethane compress as an intermediary material placed at the cavity lips between the aspiration tube and the wound tissue, which absorbs and distributes the aspiration force, preventing direct suction damage to the delicate cavity edges while maintaining effective drainage of liquids
4Area of stationary object
If the adhesive film is applied to irregularly shaped cavities, then coverage is attempted, but imperfect adhesion leads to air infiltrations and compromises asepsis and vacuum
Solution Approach 1:
The patent applies local quality by using a malleable polyurethane compress that can be shaped to conform to the specific irregular geometry of each cavity, creating a custom-fit interface that ensures complete adhesion to the cavity walls and eliminates air pockets, thereby maintaining asepsis and vacuum integrity
5Reliability
If multiple manipulations are performed to position the plug, arrange the compress, apply the film, and connect the tube, then proper device function is achieved, but the process becomes laborious, slow, and increases contamination risk
Solution Approach 1:
The patent merges multiple separate components (adhesive film, drainage tube, connecting valve, and polyurethane compress) into a single pre-assembled unit, reducing the application process from multiple separate manipulation steps to a single application action, thereby reducing time and contamination risk while ensuring proper device function
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 simplifies application, reduces pain and bleeding, ensures perfect adhesion and asepsis, and allows greater patient comfort and freedom during treatment, while being economically competitive and easy to assemble using common materials.
Implementation Method 1
an aspiration pouch (2) supported by a sheet-like element (5) which can be associated with a cavitary lesion (10)
Data Source
AI summary
A drainage device (1) particularly for aspiration in case of therapies with aspiration, fistulas, dehiscences of surgical wounds, bedsores, traumas and similar lesions, comprising an aspiration pouch (2) which is supported by a sheet-like element (5) which can be associated with the lesion (10) and is connected to aspiration means (3) by way of a connecting element (4).