Endoscopic Medical Pump Pressure Spike Detection
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Solution Overview
Problem
Existing medical devices fail to detect and respond to pressure fluctuations in body cavities during endoscopic procedures caused by muscle contractions, leading to delayed operations and potential complications due to sudden pressure changes.
Innovation Solution
An insufflation device equipped with pressure and volume flow sensors, a control unit, and a warning system that triggers an alarm when pressure increases exceed a threshold not accompanied by corresponding flow changes, indicating muscle contractions, allowing for real-time adjustment of pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the suction rate is increased to reduce pressure during muscle contractions, then the pressure is quickly returned to the target value, but the pressure then drops suddenly further causing collapse of the body cavity
Solution Approach 1:
The system performs preliminary action by detecting pressure increases caused by muscle contractions before they lead to significant pressure drops and body cavity collapse. The control unit identifies pressure peaks and issues warning signals or automatically adjusts insufflation/desufflation rates to prevent the harmful pressure drop that would otherwise occur after aggressive suction to correct the initial pressure increase.
Solution Approach 2:
The system implements feedback by continuously monitoring pressure in the body cavity and using this information to control the insufflation and desufflation processes. The control unit receives pressure data, analyzes whether pressure increases are due to muscle contractions or other causes, and adjusts the suction rate accordingly to maintain stable pressure without causing sudden drops that would collapse the body cavity.
2Reliability
If the system increases suction rate to maintain constant pressure, then pressure is quickly returned to target value, but body cavity collapses when muscle contractions subside
Solution Approach 1:
The system takes preliminary action by detecting pressure increases from muscle contractions and responding with controlled desufflation rather than aggressive suction. This prevents the over-correction that would cause body cavity collapse when the muscle contractions subside, as the system has already anticipated and compensated for the temporary nature of the pressure increase.
Solution Approach 2:
The system provides beforehand cushioning by maintaining a buffer of insufflation gas in the body cavity when pressure increases are detected. Rather than immediately and aggressively removing gas to correct the pressure increase, the system controls the desufflation rate to ensure there is always sufficient gas to prevent body cavity collapse when the muscle contractions subside.
3Measurement precision
If pressure monitoring and warning systems are added to detect muscle contractions, then real-time detection is achieved, but device complexity increases
Solution Approach 1:
The system achieves multi-functionality by using the existing pressure monitoring infrastructure for multiple purposes: routine pressure control during surgery and detection of muscle contraction-induced pressure peaks. The control unit analyzes pressure data to distinguish between normal pressure variations and pathological pressure increases, enabling the same hardware to perform both standard pressure maintenance and diagnostic functions without requiring separate dedicated sensors or systems.
Solution Approach 2:
The system implements self-service by using its own pressure monitoring and control capabilities to detect and respond to muscle contractions. The control unit automatically analyzes the pressure data, determines whether increases are due to muscle contractions based on the pattern and magnitude of pressure changes, and adjusts the insufflation/desufflation rates accordingly, reducing the need for additional external monitoring equipment or manual intervention.
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
The device effectively identifies and alerts medical staff to muscle contraction-induced pressure spikes, enabling timely adjustments to maintain stable body cavity pressure, reducing operation delays and potential complications.
Implementation Method 1
both the pressure and the gas flow through the line are measured
Implementation Method 2
both the pressure and the gas flow through the line are measured
Implementation Method 3
The suction pump can also be regulated and includes a flow meter for the gas flow through the suction line
Implementation Method 4
The gas is delivered to a trocar via a proportional valve and a sterile tube
Data Source
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AI summary
The invention relates to a medical pump for endoscopy, with a pressure control system, wherein the pressure control system can detect muscle contractions of the patient and emit a corresponding warning signal. The invention relates to a medical pump for endoscopy, with a pressure control system, wherein the pressure control system can detect muscle contractions of the patient and emit a corresponding warning signal.