Tissue Collection Basket with Separator Shelf
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Solution Overview
Problem
Existing tissue specimen collection devices face challenges in effectively isolating solid tissue specimens from body fluids, particularly when the specimens are embedded within fluids and difficult to access, leading to inefficient collection and separation processes.
Innovation Solution
A tissue specimen trapping device with a separator shelf and tissue collection baskets that filter specimens from fluids, utilizing a suction source to withdraw body fluids and separate specimens, with features like annular posts, removable baskets, and tactile alignment mechanisms for precise operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single container is used for both fluid collection and tissue specimen trapping, then device complexity is reduced, but the reliability of specimen separation deteriorates due to potential cross-contamination and clogging
Solution Approach 1:
The collection container is divided into two distinct chambers: a fluid collection chamber and a tissue specimen trapping chamber. These chambers are separated by a porous strainer that allows fluid to pass through while retaining tissue specimens. This segmentation ensures reliable specimen separation while maintaining a relatively simple overall device structure.
Solution Approach 2:
A porous strainer is introduced as an intermediary element between the fluid collection chamber and the tissue specimen trapping chamber. This strainer acts as a mediator that selectively permits fluid passage while blocking tissue specimens, thereby ensuring reliable separation without requiring complex mechanical systems.
2Reliability
If multiple separate containers are used for fluid collection and tissue specimen trapping, then specimen separation reliability is improved, but device complexity increases due to multiple tubes and connections
Solution Approach 1:
The fluid collection chamber and tissue specimen trapping chamber are merged into a single integrated collection container, eliminating the need for separate containers and multiple connecting tubes. This merging maintains reliable specimen separation through the porous strainer while significantly reducing device complexity.
Solution Approach 2:
The tissue specimen trapping chamber is nested within the collection container, with the porous strainer forming the boundary between chambers. This nested arrangement allows both functions (fluid collection and specimen trapping) to coexist in a single container structure, reducing the need for external connections and simplifying the overall device architecture.
3Productivity
If a porous strainer is used to separate tissue specimens from body fluids, then specimen separation efficiency is improved, but the device becomes prone to clogging
Solution Approach 1:
The porous strainer is positioned such that it can be easily removed from the collection container. This extraction capability allows the strainer to be cleaned or replaced when clogging occurs, maintaining high specimen separation efficiency while providing a simple solution to the clogging problem through easy maintenance rather than complex anti-clogging mechanisms.
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
Enables efficient collection and separation of multiple independent tissue specimens by filtering through the separator shelf and baskets, preventing clogging and ensuring accurate specimen retention, thereby improving the retrieval process.
Implementation Method 1
a porous strainer affixed across the chamber to provide fluidic communication between upper and lower chamber portions
Implementation Method 2
a suction source to withdraw and separate tissue specimens from body fluids of a patient
Data Source
AI summary
An improved tissue specimen trapping device for collecting and separating solid particles and materials from body fluids has a porous separator that rests on a shelf-like annular ledge between upper and lower portions of the tissue collection container. At least one tissue collection basket removably disposed in the tissue collection container above the separator shelf has a porous bottom surface to filter tissue specimens from body fluids and has downward projections to the tissue collection basket above the separator shelf to create a space therebetween.