Respiration-Synchronized Pressure Pulse Therapy for COPD Gas Trapping
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current treatments for chronic obstructive pulmonary disease (COPD), such as reverse pressure pulses (RPP), provide only temporary relief and are not effectively coordinated to reduce gas trapping and enhance ventilation in patients with end-stage emphysema.
Innovation Solution
A system and method that monitor respiration to deliver carefully-timed RPP during the respiratory cycle, combined with inhalation therapy, to improve gas exchange and reduce gas trapping by coordinating pressure pulses with exhalation and inhalation phases, ensuring targeted delivery of therapeutic agents to trapped gas regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If reverse pressure pulses are delivered during exhalation to enhance expiratory flow, then gas trapping is reduced and ventilation is improved, but the treatment only provides temporary relief and lacks coordinated timing with the respiratory cycle
Solution Approach 1:
The system delivers reverse pressure pulses in a periodic manner synchronized with the respiratory cycle, specifically timing the pulses with exhalation phases. This periodic coordination transforms the treatment from temporary relief to sustained therapeutic effect by repeatedly clearing trapped gas throughout the respiratory cycle.
Solution Approach 2:
The system incorporates sensors to monitor the patient's respiratory cycle and uses this feedback to dynamically adjust the timing and delivery of reverse pressure pulses. This closed-loop feedback ensures optimal coordination between pulse delivery and the patient's natural breathing patterns, maximizing ventilation efficiency and providing sustained relief.
2Productivity
If reverse pressure pulses are delivered to reduce gas trapping, then ventilation to trapped gas regions is improved, but the delivery is not coordinated with inhalation therapy to enhance therapeutic agent delivery
Solution Approach 1:
The system merges reverse pressure pulse delivery with inhalation therapy delivery into a single coordinated system. The reverse pressure pulses are timed to clear trapped gas regions immediately before therapeutic agents are delivered during the subsequent inhalation phase, ensuring optimal delivery of therapy to previously trapped regions.
Solution Approach 2:
The system performs preliminary action by delivering reverse pressure pulses to clear trapped gas regions before delivering the therapeutic agent. This preliminary clearing action prepares the lung regions for optimal therapeutic agent deposition during the following inhalation phase.
3Ease of operation
If steady expiratory pressure is generated by pursed lip breathing to enhance exhaled flow, then breathing is improved, but it lacks the pulsating pressure effect that increases gas mixing and enhances gas exchange
Solution Approach 1:
The system replaces steady expiratory pressure with periodic pulsating pressure delivered during exhalation. These pulses create enhanced gas mixing and improve gas exchange along the airways while maintaining ease of operation through automated delivery that requires minimal patient effort.
Solution Approach 2:
The reverse pressure pulses create mechanical vibrations in the airway gas column, enhancing gas mixing and promoting better gas exchange. This vibratory effect is achieved through the pulsating pressure waves that travel along the open airways during exhalation.
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
This approach enhances ventilation, improves blood gas levels, reduces respiratory and cardiac frequencies, and provides sustained relief by coordinating RPP with inhalation therapy to address trapped gas regions, offering a more effective treatment strategy for COPD patients.
Implementation Method 1
a pressure pulse delivery system configured to deliver a pressure pulse along the lumen to the subject
Implementation Method 2
a sensor configured to monitor the lumen and generate a signal based on the air respired by the subject
Data Source
AI summary
A system and method for providing a therapy to a subject may include a lumen configured to be coupled to a portion of a respiration passage of the subject to receive air respired by the subject. A sensor is configured to monitor the lumen and generate a signal based on the air respired by the subject. A pressure pulse delivery system is configured to deliver a pressure pulse along the lumen to the subject and a reservoir of therapeutic agent is coupled to the lumen. A processor is configured to receive the signal from the sensor, determine, from at least the signal, an exhalation period of the subject, and based on the exhalation period, cause the pressure pulse delivery system to deliver a pressure pulse to the subject. Following the pressure pulse, the processor can cause the therapeutic agent to be delivered from the reservoir.