Dual Pump Arthroscopic Irrigation System with Dynamic Flow Control
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Solution Overview
Problem
Existing irrigation and aspiration systems in endoscopic procedures lack a unified control system for dual pumps, leading to inefficiencies in fluid pressure and flow management, particularly when using tools like shaver blades, and do not effectively handle blockages or varying surgical procedures.
Innovation Solution
A dual pump irrigation/aspiration system with a common console and flow control system that uses pressure sensors and flow rate controls, featuring interchangeable tubing cassettes with coding for specific procedures, and a declogging feature to manage fluid flow and pressure dynamically based on surgical tools and procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a dual pump system is used for irrigation and aspiration, then fluid flow control capability is improved, but device complexity increases
Solution Approach 1:
The patent combines two separate pump control systems into a single integrated control console that manages both the irrigation pump and aspiration pump. This merging reduces device complexity while maintaining dual pump functionality, as the control system unifies parameters such as flow rate, pressure, and coordination between pumps under a single interface.
Solution Approach 2:
The control system is designed to perform multiple functions: it controls both irrigation and aspiration pumps, monitors pressures from multiple sensors, adjusts flow rates dynamically, and adapts to different surgical procedures. This multi-functionality allows a single control system to replace what would otherwise require separate control mechanisms for each pump.
2Measurement precision
If pressure sensors and flow rate controls are integrated, then fluid pressure and flow management precision is improved, but device complexity increases
Solution Approach 1:
The system incorporates pressure sensors that continuously monitor fluid pressure at the surgical site and feed this information back to the control system. The control system uses this feedback to automatically adjust pump operation, maintaining precise pressure control without requiring manual intervention or complex mechanical pressure regulation mechanisms.
Solution Approach 2:
The control system automatically regulates flow rates and pressures based on sensor inputs and pre-programmed parameters for different surgical procedures. This self-regulating capability eliminates the need for manual adjustment mechanisms and reduces the complexity of mechanical control components while maintaining high precision.
3Adaptability or versatility
If interchangeable tubing cassettes with coding are implemented, then adaptability to different surgical procedures is improved, but device complexity increases
Solution Approach 1:
Tubing cassettes are pre-configured with specific tubing arrangements, pressure sensor positions, and flow rate settings optimized for particular surgical procedures. The coding on each cassette allows the control system to automatically load the appropriate parameters and settings before the procedure begins, eliminating the need for manual configuration and reducing operational complexity.
Solution Approach 2:
The system uses coded identification on tubing cassettes that the control system reads to automatically copy or load the corresponding procedural parameters, tubing configurations, and pump settings. This digital copying of settings replaces complex manual setup procedures and ensures consistency across different surgical procedures.
4Reliability
If automatic declogging mechanism is added, then reliability of fluid flow is improved, but device complexity increases
Solution Approach 1:
Pressure sensors monitor fluid flow pressure continuously, and the control system detects anomalies such as pressure spikes or flow reductions that indicate blockages. Upon detection, the system automatically activates the declogging mechanism, creating a feedback loop that maintains reliable fluid flow without requiring manual monitoring or intervention.
Solution Approach 2:
The declogging mechanism is automatically activated by the control system when blockages are detected, and the system self-manages the declogging process without requiring surgeon intervention. This self-service capability maintains continuous reliable operation while adding minimal complexity, as the declogging function is integrated into the existing control architecture.
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 system provides precise control over fluid pressure and flow rates, automatically adjusts for tools like shaver blades, and includes a declogging mechanism to maintain optimal surgical conditions, enhancing the efficiency and versatility of endoscopic procedures.
Implementation Method 1
a first peristaltic pump for supplying fluid, and a second peristaltic pump for removing fluid
Data Source
AI summary
A fluid pump system having a first fluid pump for pumping fluid from a source to a surgical site and a second fluid pump for removing fluid from the surgical site at a first predetermined rate, wherein the fluid pump system intermittently operates in conjunction with a surgical tool which, when operational, removes fluid from the surgical site at a second predetermined rate greater than the first predetermined rate; a sensor for sensing a predetermined parameter of the surgical tool and providing an output signal indicating that the surgical tool is operating; and an actuating means responsive to the output signal to actuate the second fluid pump to remove fluid from the surgical site at the second predetermined rate.