Ventilation Line Filter Carrier for In-Flow Filter Replacement
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Solution Overview
Problem
Existing respiratory gas filter arrangements in ventilation lines require interruption of the gas flow to replace filters, disrupting artificial ventilation.
Innovation Solution
A filter arrangement with a radial insertion opening and guide structure allows filter replacement without interrupting the gas flow, using a guide structure to facilitate seamless insertion and removal of filters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional ventilation line with a filter holder is used, then the breathing gas filter can be replaced, but the flow of breathing gas must be interrupted for filter replacement
Solution Approach 1:
The filter holder is divided into a stationary housing and a movable filter cartridge that can be independently removed. The housing remains connected to the ventilation line while the cartridge is extracted through the side opening, allowing filter replacement without disconnecting the ventilation line and maintaining continuous gas flow.
Solution Approach 2:
A side opening is introduced as an intermediary access point that allows the filter cartridge to be removed without interrupting the main gas flow path. The opening is positioned such that it does not interfere with the central breathing gas flow, enabling filter replacement while maintaining system connectivity and gas flow.
2Ease of operation
If the ventilation line is opened or disconnected for filter replacement, then the filter can be changed, but artificial ventilation cannot be performed during filter change
Solution Approach 1:
The filter cartridge is nested within the filter holder housing, allowing the cartridge to be extracted independently while the housing remains in place. This nested structure enables the filter element to be replaced without removing the entire filter holder from the ventilation line, maintaining ventilation continuity.
Solution Approach 2:
Instead of accessing the filter through the central axial path (one dimension), the side opening provides access from a radial direction (another dimension). This alternative access path allows filter replacement without interrupting the central gas flow, enabling ventilation to continue during filter change.
3Reliability
If a radial insertion opening is used, then filter replacement can occur without interrupting gas flow, but the insertion opening must be located at a radial distance from the gas flow path
Solution Approach 1:
The filter cartridge is extracted as a separate, self-contained unit through the side opening. By designing the cartridge as a removable component with its own sealing and structural integrity, the complex internal structure of the filter holder is simplified, allowing easy access without compromising gas flow continuity.
Data Source
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AI summary
The present invention relates to a ventilation line (65) designed for guiding inspiratory and/or expiratory respiratory gas (74) during at least partial artificial ventilation of a patient, wherein the ventilation line (65) defines a virtual respiratory gas flow path (RS) centrally penetrating it, along which the ventilation line (65) guides the respiratory gas (74), wherein the ventilation line (65) has a filter carrier (68) in which a filter receiving chamber (76) through which the respiratory gas flow path (RS) penetrates is formed, in which a respiratory gas filter (82) through which the respiratory gas (74) flows is exchangeably received, which is characterized in that the filter carrier (68) has a wall (78) surrounding the filter receiving chamber (76) at a radial distance from the virtual respiratory gas flow path (RS) with a wall arranged at a radial distance from the virtual respiratory gas flow path (RS). has an insertion opening (80),through which the breathing gas filter (82) can be inserted into the filter receiving chamber (76) and brought into its operational position.