Tissue Specimen Collection Screen for Endoscopy
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Solution Overview
Problem
Conventional tissue specimen traps during endoscopy procedures fail to effectively separate tissue specimens from suction effluent, compromise specimen integrity, and complicate anatomical location identification, leading to mislabeling and misidentification issues.
Innovation Solution
A tissue specimen collection system with a collection device that is removably engaged between a suction tube and a collection tube, featuring a screen with apertures for coaxial fluid communication, allowing effluent separation and specimen retention, and includes end caps for fluid-tight sealing and preservation, along with anatomical indicia for identification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional sputum cup tissue specimen traps are used to retain tissue specimens, then tissue specimens can be separated from suction effluent, but the reservoir retains a considerable volume of potentially contaminating effluent and does not provide direct co-axial fluid communication between the endoscope and suction source
Solution Approach 1:
The collection device is divided into a proximal collection portion and a distal retention portion separated by a screen. This segmentation allows effluent to be filtered through the screen while tissue specimens are retained in the distal portion, providing direct co-axial fluid communication without the complexity of indirect pathways through lids and multiple chambers.
2Reliability
If gauze-like filters are used to retain tissue specimens in tubing, then tissue specimens can be retained in co-axial position, but the flexible porous filter material retains effluent and requires additional handling operations that may compromise specimen integrity
Solution Approach 1:
A screen with apertures is used instead of flexible porous gauze-like filter material. The screen provides precise pore size control that allows effluent to pass through while retaining tissue specimens, preventing effluent retention within the filtering structure itself and eliminating the need for additional handling operations.
3Quantity of substance
If multiple tissue specimen chambers are included in conventional traps, then multiple specimens can be collected, but the clinician must quickly retrieve specimens from multiple chambers which may result in mislabeling and misidentification of anatomical locations
Solution Approach 1:
The collection device includes a proximal collection portion and a distal retention portion separated by a screen, creating distinct functional zones. This segmentation, combined with anatomical indicia on the device, allows for clear identification of specimen origin while maintaining efficient single-chamber design that prevents mislabeling.
4Ease of operation
If conventional traps require removal of tissue specimen by accessory devices such as tweezers, then tissue specimens can be retrieved from the trap, but the additional operations may compromise the tissue specimen and require immediate transfer to preservative fluid
Solution Approach 1:
The screen is positioned within the collection device such that tissue specimens naturally accumulate on its distal surface during suction. This extraction approach allows specimens to be separated from effluent in situ, and the screen design facilitates direct transfer to preservative fluid or removal with minimal handling, preserving specimen integrity.
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 separation of effluent from specimens, maintains specimen integrity, allows easy retrieval and preservation, and facilitates organized identification of anatomical locations, reducing mislabeling and improving diagnostic accuracy.
Implementation Method 1
The screen defines a plurality of apertures for allowing fluid communication between the collection tube and the suction tube such that any fluid accompanying the tissue specimen is separated and drawn through the screen
Implementation Method 2
drawn through the collection device by and towards the suction tube. The screen defines a plurality of apertures for allowing fluid communication between the collection tube and the suction tube such that any fluid accompanying the tissue specimen is separated and drawn through the screen
Data Source
Figure 1~2A
Figure 2B~3
Figure 4
AI summary
A system and method for retaining a tissue specimen obtained via a collection tube (A) is provided. Embodiments provide a system including a collection device (100) removably and serially disposed between a collection tube and a suction tube so as to allow fluid communication therebetween via the collection device. The collection device includes a screen (110) for retaining a tissue specimen drawn into the collection device by and towards the suction tube while allowing any fluid accompanying the tissue to be drawn through the collection device and into the suction tube. The system also includes one or more end caps (201) for sealing the collection device such that the collection device may store and/or transport the retained tissue specimen in a preservation fluid. A system for identifying and organizing collection devices retaining tissue specimens from various anatomical regions is also provided.