Oscillating-Pressure Insufflation for Patient-Specific Cavity Control
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Solution Overview
Problem
Current insufflation devices apply standardized pressure settings that can lead to excessive stress and mechanical harm to tissues during minimally invasive procedures, particularly in patients with difficult ventilation, such as young children and the obese, due to inadequate feedback and slow pressure adjustments.
Innovation Solution
An apparatus and method that uses forced oscillating pressure or flow to assess the mechanical properties of internal body cavities, allowing for real-time optimization of insufflation pressure by monitoring tissue response and adjusting to minimize stress and improve surgical workspace safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of stationary object
If gas insufflation pressure is increased to create larger workspace volume, then the volume of body cavity created for surgery increases, but the mechanical stress applied to surrounding tissues increases
Solution Approach 1:
The insufflator dynamically adjusts insufflation pressure in real-time based on monitored tissue stress levels, transitioning from static preset pressure to adaptive pressure control. The system continuously monitors tissue response and modifies pressure parameters to maintain optimal workspace while preventing excessive tissue stress.
Solution Approach 2:
The system implements feedback control by monitoring tissue stress indicators and using this information to adjust insufflation pressure. The monitored tissue response feeds back to the control unit, which automatically modifies pressure parameters to resolve the contradiction between maintaining workspace volume and preventing tissue stress.
2Reliability
If gas insufflation pressure is increased to overcome ventilation hampering, then the ability to ventilate the patient improves, but the mechanical stress on diaphragm and tissues increases
Solution Approach 1:
The insufflator dynamically adjusts pressure parameters in real-time, adapting to the patient's ventilation status and diaphragm position. Rather than applying constant high pressure, the system modulates pressure to maintain surgical workspace while minimizing impact on respiratory mechanics.
Solution Approach 2:
The system changes insufflation pressure parameters based on monitored physiological responses, including ventilation status. By adjusting pressure magnitude and temporal characteristics, the system optimizes the balance between surgical workspace requirements and respiratory function.
3Ease of operation
If preset pressure settings are applied to all patients, then the ease of operation increases, but the adaptability to individual patient conditions decreases
Solution Approach 1:
The insufflator performs self-adjustment by automatically monitoring tissue stress indicators and autonomously modifying insufflation pressure parameters. The system serves itself by using its own monitoring data to optimize pressure settings, eliminating the need for manual reconfiguration for each patient.
Solution Approach 2:
The system automatically changes pressure parameters based on individual patient characteristics and real-time tissue response. By adapting pressure magnitude, frequency, and temporal patterns to each patient's specific anatomy and tissue properties, the system achieves personalized optimization while maintaining ease of operation.
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 patient-specific pressure settings that reduce tissue stress and respiratory impact during endoscopic procedures, optimizing surgical workspace while minimizing the risk of overdistension and associated complications.
Implementation Method 1
the gas insufflator is configured to impose or superimpose at least one pressure or flow oscillation to obtain a forced oscillating pressure or flow delivered to the confined volume
Data Source
AI summary
An insufflator for exposing structures within an internal cavity forming a confined volume within an animal or human body, the apparatus including: an input conduit for exchanging gas with the confined volume; a gas insufflator for insufflation of gas into the confined volume through the input conduit, wherein the gas insufflator is configured to deliver an insufflator pressure to the confined volume, wherein the gas insufflator is configured to (super)impose at least one pressure or flow oscillation to obtain a forced oscillating pressure or flow delivered to the confined volume, the forced oscillating pressure or flow having at least one component with a frequency and an amplitude; a monitoring unit for monitoring a response of the internal cavity to the forced oscillating pressure or flow for determining one or more physical properties of the internal cavity; and an adapter unit for adjusting the insufflation pressure based on the determined one or more physical properties of the internal cavity.