Dynamic Compliance Patient Circuit for Ventilation Mode Adaptation
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Solution Overview
Problem
Current medical ventilator systems require different patient circuits for varying ventilation modes, leading to disruptions and risks when switching between modes, as existing circuits either expand excessively or are not adaptable, necessitating manual replacement and potential infection risks.
Innovation Solution
A dynamic compliance patient circuit that adjusts its compliance based on ventilation mode through a compliance adjustment covering, which can be tightened, pressurized, or filled with non-Newtonian fluid, allowing for automatic or manual adjustments to match changing ventilation requirements without the need for circuit replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed-compliance patient circuit is used, then the circuit structure is simple and easy to manufacture, but the circuit cannot adapt to different ventilation modes and requires manual replacement when switching modes
Solution Approach 1:
The patient circuit incorporates a compliance adjustment covering that can dynamically change its compliance characteristics. The covering includes an adjustable structure that allows the circuit to transition between different compliance states (first compliance and second compliance) to match different ventilation mode requirements, making the circuit adaptive rather than fixed.
Solution Approach 2:
The patient circuit is designed with a multi-functional compliance adjustment covering that can serve multiple ventilation modes. The covering structure enables the single circuit to perform effectively in both high-compliance and low-compliance ventilation scenarios, eliminating the need for separate dedicated circuits for different ventilation types.
2Reliability
If manual circuit replacement is performed when switching ventilation modes, then different optimized circuits can be used for each mode, but patient disruption and infection risk increase
Solution Approach 1:
The compliance adjustment covering can be dynamically reconfigured during ventilation mode transitions without disconnecting from the patient. The adjustable structure allows real-time compliance changes, ensuring continuous safe ventilation while eliminating the need for manual circuit replacement and associated patient disruptions.
Solution Approach 2:
The system enables self-adjustment of compliance characteristics through the adjustable covering structure. The circuit can autonomously adapt its compliance properties to match different ventilation modes without requiring external intervention or manual replacement, thereby maintaining patient safety and ventilation continuity.
3Ease of operation
If an existing patient circuit is used across different ventilation modes, then circuit replacement is avoided, but excessive expansion occurs in modes requiring low compliance
Solution Approach 1:
The compliance adjustment covering provides dynamic control over the circuit's compliance characteristics. When low-compliance ventilation mode is activated, the covering structure can be adjusted to reduce expansion and maintain stable, appropriate compliance levels, preventing the excessive expansion that would occur in a fixed high-compliance circuit.
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 seamless transitions between ventilation modes without circuit changes, reducing patient risk and infection hazards by dynamically controlling the effective compliance of the inspiratory tube, maintaining effective ventilation while preventing excessive expansion.
Implementation Method 1
the compliance adjustment covering includes a mesh capable of being tightened by pulling tightening extensions extending from the mesh
Implementation Method 2
the outer lumen is capable of receiving a compliance-adjusting pressurized gas
Implementation Method 3
the outer lumen is at least partially filled with a non-Newtonian fluid in contact with an outer surface of the inspiratory tube
Data Source
AI summary
Methods and systems for dynamically adjusting the compliance of a patient circuit. In an example, the technology relates to a medical ventilation system that includes a dynamic compliance circuit. The dynamic compliance circuit includes an inspiratory tube extending from an inhalation port of a medical ventilator, the inspiratory tube defining an inner lumen for carrying breathing gases from the inhalation port towards a patient; and a compliance adjustment covering coupled to the inspiratory tube, wherein adjustments to the compliance adjustment covering alter an effective compliance of the inspiratory tube. The system may also include a processor; and memory storing instructions that, when executed by the processor, cause the system to perform operations including, based a type of ventilation mode of the ventilator, causing an adjustment to the compliance adjustment covering to alter the effective compliance of the inspiratory tube.