Peristaltic Pump Casing U-Shape for Injection System Pressure Drop
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Solution Overview
Problem
Powered syringe-less injectors face challenges in achieving high hydraulic performance, particularly when connected to insertable devices like PICCs & PORTs, which can hinder the injection system's ability to generate sufficient pressure and flow rate.
Innovation Solution
The solution involves optimizing the fluid path by redesigning the connection interface between the patient set assembly and the pressurizing unit, specifically using a peristaltic pump component with a U-shaped casing configuration near the inlet port, and selecting appropriate materials and diameters for the peristaltic and delivery tubes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a peristaltic pump is used in a syringe-less injector, then the device can be simplified and made disposable, but the hydraulic performance (pressure and flow rate) is reduced compared to syringe injectors
Solution Approach 1:
The patent changes the geometric parameters of the fluid path by introducing a U-shaped configuration in the peristaltic pump casing near the inlet port. This modifies the flow characteristics to reduce pressure drop and improve hydraulic performance while maintaining the simplicity of the peristaltic pump design
Solution Approach 2:
The patent employs a U-shaped curved configuration in the peristaltic pump casing near the inlet port. This curved geometry allows for smoother fluid flow, reduces turbulence and pressure drop, and improves hydraulic performance while maintaining the disposable nature of the device
2Adaptability or versatility
If the injection system is connected to insertable devices like PICCs & PORTs, then the system can be used for a broader range of patients, but the pressure and flow rate generation capability is hindered
Solution Approach 1:
The patent modifies the peristaltic pump casing geometry by adding a U-shaped configuration near the inlet port, which changes the flow parameters to reduce pressure drop. This enables the system to maintain sufficient pressure and flow rate even when connected to insertable devices like PICCs and PORTs, thereby expanding adaptability without sacrificing power
3Ease of manufacture
If a straight fluid path is used in the peristaltic pump, then the manufacturing is simpler, but the pressure drop is higher and fluid flow stability is reduced
Solution Approach 1:
The patent introduces a U-shaped curved configuration in the peristaltic pump casing near the inlet port. This curved path reduces pressure drop and improves fluid flow stability by reducing turbulence, while the manufacturing complexity increase is minimal and does not significantly affect production feasibility
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 approach reduces pressure drop within the patient set assembly, enhances fluid flow stability, and improves the overall hydraulic performance of the syringe-less injection system, even when connected to additional medical devices.
Implementation Method 1
a peristaltic pump that houses a plurality of rollers, among which a tube is inserted, and then sequentially and alternately squeezed by the rollers for finally injecting a fluid into a patient
Data Source
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AI summary
An injection system is proposed which comprises at least one supply station for supplying a medical fluid to be injected into a patient's vasculature, a pressurizing unit comprising a motor for pressurizing said medical fluid, a delivery arrangement in fluid communication with the at least one supply station and a patient set assembly in fluid communication with the delivery arrangement. The patient set assembly comprises a delivery tube for delivering the pressurized fluid to the patient and a peristaltic pump component comprising a casing which includes an inlet port and an exit port, the inlet port being in fluid communication with the delivery arrangement and the exit port being in fluid communication with the delivery tube. According to an embodiment of the present invention, in proximity of the inlet port, the casing of the peristaltic pump component has a substantially U-shaped configuration. The present invention also relates to a patient set assembly and to a peristaltic pump component.