Removable Wound Model With Hardness Gradient for Debridement Training
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There is a lack of commercial models for teaching wound debridement, particularly for diabetic neuropathic wounds, and existing simulated models are inadequate for practical training of healthcare providers.
Innovation Solution
A physical model with a removable member having variable density filling, simulating a wound with a gradient of hardness, is used to teach wound debridement, featuring a removable member with distinct zones and color coding to indicate depth and completion of the debridement process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple simulated model is used for teaching wound debridement, then the device complexity is reduced, but the realism and training effectiveness deteriorate
Solution Approach 1:
The model incorporates variable density filling with different hardness levels in specific zones (dense callous zone with Shore A hardness 40-80, soft callous zone with Shore A hardness 18-28) to locally simulate the varying tissue characteristics of a diabetic neuropathic wound, providing realistic training feedback without requiring complete complexity throughout the entire model
Solution Approach 2:
The removable member is divided into distinct functional zones (ulcer zone, dense callous zone, soft callous zone) with different material properties, allowing learners to sequentially remove tissue layers and experience the progressive nature of actual wound debridement in a controlled manner
2Reliability
If a removable member with variable density filling is used, then the training realism is improved, but the manufacturing complexity increases
Solution Approach 1:
The model uses composite construction combining a removable member with variable density filling (comprising different polymer materials with varying Shore A hardness) embedded in a model body, allowing the complex tissue simulation to be manufactured as an integrated component rather than assembled from separate parts
Solution Approach 2:
The variable density filling utilizes changes in material hardness parameters (Shore A hardness ranging from 18-80) to simulate different tissue depths, with the hardness decreasing radially outward from the ulcer zone, creating realistic tissue resistance variations without requiring complex mechanical mechanisms
3Measurement precision
If multiple zones with different hardness are included, then the accuracy of simulating wound tissue is improved, but the device complexity increases
Solution Approach 1:
Each zone (ulcer zone, dense callous zone, soft callous zone) is assigned specific material properties matching actual wound tissue characteristics, with the dense callous zone having Shore A hardness 40-80 and the soft callous zone having Shore A hardness 18-28, providing accurate tissue simulation through localized material selection rather than uniform construction
Solution Approach 2:
The model adds a dimensional aspect of radial hardness variation, where the hardness parameter changes continuously or in steps from the ulcer zone outward through the callous zones, creating a three-dimensional tissue resistance profile that enhances training realism without requiring separate components for each zone
Data Source
AI summary
An apparatus for teaching wound debridement includes a model of a body part and a removable member. The model includes a receiving portion. The removable member is sized and shaped to simulate a wound. The receiving portion is configured to receive the removable member, and the removable member is removably coupled to the model by an attachment device.