Weighted Element Tissue Sampling Device for Preservative Mixing
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Solution Overview
Problem
Conventional tissue sampling techniques face challenges such as sample loss and contamination due to the sample getting stuck in the cutting element, and suboptimal conservation of the sample, making it difficult to extract and analyze.
Innovation Solution
A sampling system featuring a weighted element that assumes two positions, initially acting as a stopper to prevent contamination and later as an agitator or mixer within the storage tube, facilitating sample preservation and analysis by ensuring the sample is in contact with preservatives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the sample is collected in the cutting element housing, then the sample is directly inserted into the microtube after lid perforation, but the sample remains stuck in the housing and is difficult to extract
Solution Approach 1:
The weighted element transitions from a static position (held in the collection device) to a dynamic position (free in the storage tube) during sampling, enabling it to perform multiple functions: acting as a stopper before sampling and then falling to mix the sample with preservative after sampling
Solution Approach 2:
The weighted element serves multiple functions: it acts as a stopper to close the tube inlet before sampling, serves as a visual indicator during sampling, and functions as an agitator/mixer after sampling by falling to the bottom of the tube and mixing the sample with preservative
2Reliability
If the sample is collected in the cutting element housing, then the sample can be directly inserted into the microtube, but there is a risk of sample loss and contamination
Solution Approach 1:
The weighted element acts as an intermediary between the sample and the preservative, ensuring the sample is properly mixed with the preservative by falling to the bottom of the tube and agitating the contents, thereby improving sample preservation
Solution Approach 2:
The weighted element has a specific color that provides a visual indicator to confirm correct sampling has occurred, allowing users to verify the sampling process was completed properly
3Reliability
If a conventional punch is used for sampling, then the cutting element can cut and collect the sample, but the sample conservation is not optimal
Solution Approach 1:
The weighted element changes its position parameter during the sampling process, transitioning from being held in the collection device to being free in the storage tube, which enables it to perform different functions at different stages
Solution Approach 2:
The weighted element is pre-positioned in the collection device before sampling occurs, where it acts as a stopper to close the tube inlet, preventing contamination before the sampling process begins
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 system improves sample preservation and analysis by ensuring the sample is in contact with preservatives, reducing the risk of loss and contamination, and simplifies the extraction process by providing a visual indicator for correct sampling and facilitating mixing of reagents.
Implementation Method 1
The weighted element is a sphere or a cylinder having a density greater than or equal to that of at least one specific agent contained in the tube
Data Source
AI summary
The invention relates to a system for collecting at least one sample of animal tissue, including: a sampling device, including at least one cutting element for cutting off a sample of animal tissue, and a storage device including a receiving tube for receiving said sample. According to the invention, the system includes a weighted element (22) configured so as to assume at least two positions, i.e. a first position which is assumed prior to collecting said sample and in which said weighted element (22) is retained in said sampling device or in said storage device, and a second position which is assumed after said sample is collect and in which said weighted element (22) is free within said tube, said weighted element (22) being pushed inside said tube during said sampling.