Peristaltic Pump Selective Activation for Pressure Control
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Solution Overview
Problem
Current fluid management systems during endoscopic, hysteroscopic, and laparoscopic procedures face challenges in maintaining a desired pressure within a body cavity, as they often rely on a single outflow mechanism that may not provide sufficient control over pressure dynamics, especially when using a vacuum pump or atmospheric pressure.
Innovation Solution
A peristaltic pump system with dual pump heads and a motor configuration that allows selective activation of multiple fluid lines, enabling precise control of pressure by switching between different outflow paths and using a controller to manage the rotation of each pump head, thereby maintaining a desired pressure within the body cavity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single outflow mechanism is used to maintain pressure in the body cavity, then the device complexity is reduced, but the pressure control precision is insufficient
Solution Approach 1:
The outflow system is segmented into multiple independent outflow lines (first outflow line and second outflow line), each with its own pump head (first pump head and second pump head). This segmentation allows independent control of each outflow path, enabling precise pressure management by selectively activating specific outflow lines based on procedural needs.
Solution Approach 2:
The system employs dynamic activation of pump heads through clutch mechanisms. The controller can selectively engage or disengage the first clutch and second clutch to activate or deactivate the first and second pump heads independently. This dynamic control allows the system to adapt pressure management strategies in real-time, switching between different outflow configurations as needed.
2Adaptability or versatility
If multiple outflow lines are used to control pressure dynamics, then the pressure control precision is improved, but the device complexity increases
Solution Approach 1:
The pump system is designed with multi-functionality, where a single pump assembly can operate in multiple modes by selectively activating different pump heads. The first pump head and second pump head can be independently controlled to handle different outflow requirements, allowing the system to adapt to various procedural scenarios without requiring entirely separate systems for each function.
Solution Approach 2:
Clutch mechanisms serve as intermediaries between the motor shaft and the pump heads. The first clutch and second clutch act as selective couplings that allow the controller to engage or disengage specific pump heads from the drive shaft. This intermediary mechanism provides a simple way to control multiple outflow lines without complex valve systems or additional motors.
3Ease of operation
If a peristaltic pump with selective activation is used, then the pressure control precision is improved, but the device complexity increases
Solution Approach 1:
The system provides self-service through automated controller management of the multiple pump heads. The controller automatically selects which pump head to activate based on the desired pressure management strategy, eliminating the need for manual intervention to switch between outflow lines. The clutch mechanisms automatically engage or disengage the appropriate pump heads in response to controller signals.
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
This solution provides greater control over intrauterine pressure by allowing independent control of each outflow path, reducing fluid volume during procedures, and enabling more precise management of pressure dynamics, which enhances surgical access and safety.
Implementation Method 1
The first and second pump head may each be configured to compress an outer wall of a tube passed through the respective pump head such that a fluid within the tube is advanced through the tube as the respective pump head is rotated.
Data Source
AI summary
A peristaltic pump includes a first motor shaft, a second motor shaft, a first pump head, a second pump head, and a motor. The first pump head is operably coupled to the first motor shaft such that the first pump head is rotated in response to rotation of the first motor shaft. The second pump head is operably coupled to the second motor shaft such that the second pump head is rotated in response to rotation of the second motor shaft. The motor is configured to rotate the first and second motor shafts. The pump head has a first mode in which the first pump head is rotated and the second pump head is idle and a second mode in which the first pump head is idle and the second pump head is rotated.