Endoscope Fluid Collection Sheath with Sealing and Filter
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Solution Overview
Problem
Existing body fluid collection devices using endoscopes require users to manually manipulate both the endoscope and suction syringe, making it difficult to concentrate on finding the appropriate collection site due to divided attention.
Innovation Solution
A body fluid collection device with a sheath and reservoir system that integrates with an endoscope, featuring a sealing member to prevent backflow and a filter that allows gas passage while preventing liquid, enabling automatic and continuous suction of fluids into an accommodating section for efficient collection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a syringe is manually manipulated to suction body fluids through a catheter, then body fluid collection is achieved, but the user cannot concentrate on finding the appropriate collection site due to divided attention
Solution Approach 1:
The patent combines the endoscope and suction device into an integrated system where the suction section is built into the endoscope itself. The longitudinal member with lumen is inserted through the endoscope channel, and the suction force is applied through the endoscope's suction mechanism, allowing unified control and eliminating the need for separate syringe manipulation.
Solution Approach 2:
The suction device enables automatic suction operation where the system itself performs the fluid collection function. The suction section automatically draws body fluids through the longitudinal member when positioned at the collection site, reducing the need for continuous manual intervention and allowing the user to focus on navigation and site identification.
2Productivity
If manual suction with a syringe is used to collect body fluids, then collection is possible, but the process is inefficient and time-consuming
Solution Approach 1:
The suction device maintains continuous suction action through the longitudinal member and into the accommodating section. The system allows uninterrupted fluid collection as long as the suction force is applied and the collection site is maintained, eliminating the intermittent nature of manual syringe operation and significantly improving collection efficiency.
3Reliability
If the longitudinal member is inserted through the channel without sealing, then fluid can be suctioned, but backflow from distal end to proximal end cannot be prevented
Solution Approach 1:
The sealing member acts as an intermediary element between the longitudinal member and the channel. It seals the space between these two components to prevent backflow while allowing the suction force to be transmitted effectively. The sealing member is positioned at a specific location to achieve both sealing and suction transmission functions.
4Reliability
If the lumen is opened to the channel without restriction, then suction can occur, but uncontrolled fluid flow cannot be prevented
Solution Approach 1:
The flow path is designed with different functional zones: the first section allows suction flow from the channel, while the second section with the filter provides controlled flow into the accommodating section. The filter creates a localized control point that regulates fluid passage while maintaining overall system functionality.
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 automatic and continuous suction of body fluids, allowing the user to focus on locating the collection site using the endoscope, improving efficiency and accuracy of fluid collection.
Implementation Method 1
a suction force is acted on a flow path, and the flow path is formed to bring an opening of a proximal end portion of the lumen in communication with an opening of a proximal end portion of the channel
Implementation Method 2
a sealing member configured to seal a space between the longitudinal member and the channel closer to a distal end of the longitudinal member than the suction port so that a fluid does not flow from the distal end side to a proximal end side of the longitudinal member
Implementation Method 3
A filter configured to allow passing of a gas and not to allow passing of a liquid may be provided at a hole formed in the flow path with no gap therebetween
Data Source
AI summary
A body fluid collection device comprises a longitudinal member having a lumen formed along a longitudinal axis and configured to be inserted through the channel, a flow path in which a suction is acted by the suction section of the endoscope, which is formed to bring the lumen of the longitudinal member in communication with the channel, an accommodating section which is formed in the flow path, and accumulate the the body fluid suctioned in the lumen by the suction section of the endoscope, and a sealing member configured to seal a space between the longitudinal member and the channel closer to a distal end of the longitudinal member than the suction port so that a fluid does not flow from the distal end side to a proximal end side of the longitudinal member.