Adjustable Roller Pump Rotor with Spring-Biased Angular Movement
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Solution Overview
Problem
Existing roller pumps lack efficient adjustment mechanisms for varying the distance between rollers, leading to potential tissue damage and tubing rupture due to inconsistent occlusion, especially when used with tubing of different diameters or qualities, and require time-consuming calibration processes.
Innovation Solution
A roller pump rotor with manually adjustable and spring-biased components that allow for angular movement of roller supports, enabling automatic adjustment of the distance between rollers to accommodate varying tubing sizes and qualities, reducing the need for extensive calibration and enhancing operational efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the distance between rollers is manually adjusted to change occlusion amount, then the pump rate and suction control improve, but the device complexity and calibration time increase
Solution Approach 1:
The roller supports are designed to be movable rather than fixed, allowing dynamic adjustment of roller distance. The roller supports can rotate angularly about a center element, enabling continuous variation of the distance between rollers to optimize occlusion for different tubing sizes and pump rates.
Solution Approach 2:
The system allows changing the physical parameter of roller distance to adapt to different operating conditions. By varying the distance between rollers, the pump can accommodate different tubing diameters and adjust the amount of occlusion applied, thereby controlling pump rate and suction without requiring complex calibration procedures.
2Adaptability or versatility
If spring biased components are added for automatic adjustment, then the adaptability to tubing variations improves, but the device complexity increases
Solution Approach 1:
The spring biased components provide automatic self-adjustment of the roller distance based on the actual tubing dimensions. When tubing with varying diameters or wall thicknesses is inserted, the springs automatically adjust the roller supports to achieve proper occlusion without requiring manual intervention or calibration, making the system adapt to different tubing specifications.
3Device complexity
If fixed roller distance is used, then the device complexity is reduced, but the reliability and safety decrease due to inconsistent occlusion
Solution Approach 1:
The roller supports are designed to be movable rather than fixed, allowing dynamic adjustment of roller distance. The roller supports can rotate angularly about a center element, enabling continuous variation of the distance between rollers to optimize occlusion for different tubing sizes and pump rates.
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 solution provides a more efficient and flexible roller pump rotor that can be adjusted in the surgical field without extensive calibration, ensuring consistent occlusion and reducing the risk of tissue damage or tubing rupture, while maintaining a constant spring force to accommodate tubing variations.
Implementation Method 1
first and second spring biased components surrounding first and second positioning elements, respectively, to allow the first and second roller supports to move
Data Source
AI summary
A pump rotor for a roller pump, is disclosed. The rotor comprises: a first roller support comprising a first roller; a second roller support comprising a second roller; an element in the center connected to the first and second roller supports, wherein the first and second roller supports may move angularly with respect to the center element causing distance between the first and second rollers to be varied; first and second positioning elements that connect the first and second roller supports, respectively, to the center element; and first and second spring biased components surrounding first and second positioning elements, respectively, to allow the first and second roller supports to move to allow for automatic adjustment of the rotor.