Insufflator with Dual Pressure Sensors for Controlled Desufflation
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Solution Overview
Problem
Current laparoscopy desufflation methods are uncontrolled, exposing surgical personnel to hazardous gases, risking CO2 retention in patients leading to post-operative pain, and causing rapid abdominal collapse.
Innovation Solution
An insufflation device with a suction pump and separate insufflation and desufflation lines, equipped with pressure and volume flow sensors, allowing for controlled and safe desufflation by activating the suction pump only when specific pressure conditions are met.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If uncontrolled ventilation is performed by opening a trocar port, then the gas removal process is simple and quick, but surgical personnel are exposed to hazardous combustion gases and the abdomen collapses excessively quickly
Solution Approach 1:
The system separates the desufflation function from the standard trocar port by introducing a dedicated desufflation line with a separate suction pump. This segmentation allows controlled gas removal through a specialized pathway that includes filtration capabilities, thereby removing hazardous gas exposure while maintaining efficient gas evacuation.
Solution Approach 2:
A filter is introduced as an intermediary component in the desufflation line between the patient's abdomen and the suction pump. This filter mediates the gas removal process by capturing hazardous combustion gases before they reach the surgical personnel, enabling safe and controlled desufflation.
2Device complexity
If uncontrolled ventilation is performed by opening a trocar port, then the gas removal process is simple, but CO2 remains in the patient causing post-operative pain
Solution Approach 1:
Pressure sensors are installed in both the insufflation line and the desufflation line to provide real-time feedback on abdominal pressure conditions. The controller unit continuously monitors these pressure values and adjusts the suction pump operation accordingly, ensuring complete gas removal while preventing negative pressure conditions that could cause tissue damage.
Solution Approach 2:
The suction pump operates dynamically with variable suction power rather than at a fixed rate. The controller unit adjusts the pump's suction strength based on real-time pressure feedback, allowing the system to adapt to changing abdominal conditions during desufflation and ensure complete gas removal without causing harm.
3Loss of time
If the suction pump is activated without pressure monitoring, then the desufflation process can start immediately, but negative pressure conditions may damage patient tissues
Solution Approach 1:
The system performs preliminary checks of the pressure conditions in both insufflation and desufflation lines before activating the suction pump. The controller unit verifies that pressure values are within safe ranges and that the abdominal cavity is properly prepared for desufflation, preventing premature pump activation that could cause tissue damage.
Solution Approach 2:
The dual pressure sensor system provides beforehand cushioning by monitoring pressure conditions and preparing the control system for safe pump activation. The controller unit uses this advance pressure information to prevent negative pressure conditions, effectively cushioning against potential tissue damage before it can occur.
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 controlled and safe desufflation, preventing hazardous gas exposure, reducing the risk of CO2 retention and post-operative pain, and maintaining abdominal pressure stability during the process.
Implementation Method 1
the insufflation line and the desufflation line have one pressure sensor and one volume flow sensor each, wherein the insufflator comprises a device for controlled ventilation of the gas present in the patient
Implementation Method 2
the insufflation line and the desufflation line have one pressure sensor and one volume flow sensor each
Implementation Method 3
a separate desufflation line, wherein the desufflation line is connected to a suction pump
Data Source
AI summary
The present disclosure is directed to an insufflator which includes a controller, an insufflation line, a desufflation line, and one pressure sensor and one volume flow sensor associated with each of the insufflation line and the desufflation lines. The insufflation line is in fluid communication with a gas source and the desufflation line in fluid communication with a suction pump. Wherein the controller controls ventilation of a gas present in a patient by adjusting an amount of suction in the desufflation line as a function of pressure measurements obtained from the pressure sensors associated with the insufflation line and the desufflation line. Additionally, the controller includes an activation blocking system that prevents suction in the desufflation line when a pressure measured by means of the pressure sensor associated with the insufflation line is lower than a preset threshold value. Still further, the activation blocking system further prevents suction in the desufflation line when the pressure measured by means of the pressure sensor associated with the insufflation line and a pressure measured by means of the pressure sensor associated with the desufflation line are not identical.