Surgical Fluid Management System with Disposable Cassette
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Solution Overview
Problem
Surgical fluid management systems are inconvenient, difficult to monitor, and time-consuming to arrange, lacking efficient solutions for fluid delivery and pressure control in endoscopic procedures.
Innovation Solution
A disposable cassette with integrated inflow and outflow tubing sections that automatically recognize the cassette and fluid volume, coupled with a console featuring motorized loading and pressure sensing capabilities, allowing for efficient fluid management and automatic locking mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual arrangement of fluid management systems is used, then system flexibility is maintained, but setup time and operational complexity increase significantly
Solution Approach 1:
The fluid management system is divided into separate modular components: a disposable cassette containing tubing sections and a reusable console. This segmentation allows the cassette to be pre-configured and quickly exchanged, reducing setup time while maintaining system flexibility through modular reconfiguration.
Solution Approach 2:
The disposable cassette is pre-assembled with inflow and outflow tubing sections in the desired configuration before reaching the user. This preliminary arrangement eliminates the need for manual tubing setup during procedures, significantly reducing setup time and operational complexity.
2Ease of operation
If integrated disposable cassette is used, then ease of replacement is improved, but manufacturing complexity increases
Solution Approach 1:
Multiple functional elements (inflow tubing, outflow tubing, connectors, and housing) are merged into a single integrated disposable cassette assembly. This consolidation simplifies the user operation of replacing entire assemblies while the manufacturing complexity is managed through standardized component design and assembly processes.
3Measurement precision
If automatic recognition system is implemented, then monitoring accuracy is improved, but device complexity increases
Solution Approach 1:
Manual identification and configuration of cassettes is replaced with an automatic recognition system using optical or electronic identifiers (such as barcodes or RFID tags) on the cassette. The console automatically reads these identifiers to identify cassette type and configure system parameters, improving accuracy while keeping the added complexity minimal through standardized identification protocols.
4Productivity
If motorized loading mechanism is added, then loading speed is improved, but device complexity and cost increase
Solution Approach 1:
The cassette design incorporates self-aligning features and guide rails that enable the cassette to be automatically positioned and loaded into the console with minimal mechanical intervention. This self-service approach accelerates loading while minimizing the complexity of motorized mechanisms by relying on passive alignment features.
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
Facilitates easy replacement and setup of fluid management systems, enhances monitoring of fluid pressure, and improves operational efficiency by automating the loading and locking processes, thereby simplifying the use of surgical fluid management systems.
Implementation Method 1
a first peristaltic pump rotor and a second peristaltic pump rotor. The first flexible tube is configured to engage the first peristaltic pump rotor when the cassette is mounted on the console, and the second flexible tube is configured to engage the second peristaltic pump rotor when the cassette is mounted on the console
Data Source
AI summary
A fluid management system includes a disposable cassette carrying inflow and outflow tubing sections that are configured for releasably mating with a console including a control unit and a pair of roller pump heads. The console may automatically identify the disposable cassette and weigh the fluid in an inflow source. During operation, the system can monitor pressure in the working space, and provide for inflow and outflow control to maintain any desired operating parameters.