Ear Tissue Sampling Spike for Slippage Prevention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current animal marking and sampling systems experience a significant sampling failure rate due to the ear tissue not being cut neatly, leading to partial connection with the rest of the ear and subsequent slippage, which results in incomplete sample collection.
Innovation Solution
Incorporation of a sample fixating spike member that engages on the opposite side of the ear from the cutter, securing the sample and preventing slippage, and is designed to move into the sample container under the load of the sample, potentially made of brittle materials that shatter to avoid obstructing further processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a circular cutter is used to remove a sample from the animal ear, then the sample can be collected in the sample container, but the ear tissue is not cut neatly and remains partly connected to the rest of the ear, causing slippage and sampling failure
Solution Approach 1:
The device is divided into two functional parts: a cutter for sample removal and a spike member for sample fixation. The spike member is initially positioned outside the sample container and only moves into the container after the sample is securely fixed, separating the cutting and fixing functions to ensure reliable sample collection
Solution Approach 2:
The spike member is pre-positioned in a retracted state outside the sample container before cutting occurs. The cutter first removes the sample, then the spike member moves into the container to fix the sample. This preliminary positioning ensures the sample is secured before being transferred to the container, preventing slippage and ensuring complete sample collection
2Reliability
If a spike member is used to fixate the sample, then the sample is secured and slippage is prevented, but the spike member may obstruct laboratory processing if it remains intact
Solution Approach 1:
The spike member is designed with a brittle material that changes its state from intact to fragmented under specific loading conditions. During sample fixation, the spike remains intact to provide secure fixation. During laboratory processing, when subjected to compression forces, the spike shatters into small pieces that no longer obstruct processing. This parameter change from solid intact state to fragmented state resolves the contradiction between fixation effectiveness and processing accessibility
Data Source
AI summary
A system for marking a non-human biological object and removing a sample of the biological object includes a first tag part, a second tag part, a pin connected to the first tag part by its first end and provided with a head at its second end, a sample removing stopper which, while attaching the tag parts on the biological object and removing the sample therefrom, is positioned on the head of the pin. The stopper has a cutter at its front, which cutter delimits a sample receiving cavity. The second tag part is provided with a passage for the stopper and the head of the pin. The second tag part is provided in the region of the passage of the second tag part with a sample fixating spike member.