Pressure-Equalized Pick-Up Receptacle for Clean Suction Rod Withdrawal
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Solution Overview
Problem
The issue of contamination of medical devices due to residual cleaning fluid being drawn out of suction tubes during withdrawal, leading to hygiene issues and uncertainty, is addressed.
Innovation Solution
A receiving quiver with a pressure equalization line or groove is integrated into or attached to the medical device, allowing for uniform pressure equalization between the receiving chamber and the environment, preventing the suction of cleaning fluid during insertion and withdrawal of the suction rod.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the suction tube is quickly withdrawn from the holder for reuse, then the operation speed is improved, but the tight fit between the suction tube and holder creates a vacuum that draws out remaining cleaning fluid causing contamination
Solution Approach 1:
A pressure equalization line is introduced as an intermediary element between the receiving chamber and the environment. This line allows pressure equalization during suction tube withdrawal, preventing the vacuum effect that draws out cleaning fluid, while not interfering with the quick withdrawal operation
Solution Approach 2:
The pressure equalization function is extracted from the sealed receiving chamber system by providing a separate pressure equalization line that connects to the environment, allowing pressure balance without compromising the seal integrity for contamination prevention
2Reliability
If the suction tube is stored in the holder with a tight fit, then the reliability of preventing contamination is improved, but the vacuum created during quick withdrawal draws out cleaning fluid
Solution Approach 1:
The receiving chamber system is segmented into two functional zones: a sealed second section for storing the suction tube and preventing contamination, and a pressure equalization line providing a separate pathway for pressure balance during withdrawal operations
Solution Approach 2:
The pressure equalization line acts as an intermediary mechanism that resolves the conflict between maintaining a tight seal for contamination prevention and allowing pressure equalization during quick withdrawal to avoid drawing out cleaning fluid
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
Prevents contamination of the medical device by ensuring consistent pressure equalization, thereby minimizing the risk of fluid being drawn out, thus maintaining hygiene and device cleanliness.
Implementation Method 1
a pressure equalization line, in particular a pressure equalization groove, which connects a first section of the receiving chamber to an environment in a pressure-equalizing/isobaric manner
Data Source
Figure 1~2
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Figure 5
AI summary
The present disclosure relates to a receiving chamber (12) of or for a medical device (2), preferably a device for extracorporeal blood treatment, comprising a receiving chamber (16) and a pressure equalization line (30). The receiving chamber (16) extends from an insertion opening (10) formed in a surface (4) of the medical device in a first extension direction (X) into the medical device. The pressure equalization line (30) connects at least a first section (26) of the receiving chamber (16), spaced apart from the insertion opening (10) in the first extension direction (X), to a surrounding environment (50) of the medical device in a pressure-equalizing manner. The present disclosure further relates to a system comprising a receiving chamber (12) and a suction rod (14) and a medical device (2).