Dual-Chamber Infusion Pump for Simultaneous High-Dose and Low-Concentration Medicament Delivery
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Solution Overview
Problem
Conventional chemotherapy pumps are unable to simultaneously deliver high dose medicaments and continuously infuse low concentration medicaments, which is a requirement in clinical and medical practices.
Innovation Solution
An infusion device with two chambers, a pump, and a catheter system that allows for the separate infusion of multiple medicaments at different rates through a network of passageways and a high-resilient elastic pouch, enabling rapid delivery of high dose medicaments and continuous infusion of low concentration medicaments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional chemotherapy pump is used, then the pump structure is simple, but it cannot simultaneously deliver high dose medicaments and continuously infuse low concentration medicaments
Solution Approach 1:
The pump is divided into two separate chambers (front chamber and rear chamber), each capable of storing and delivering different medicaments. This segmentation allows the device to handle multiple medicaments with different delivery requirements while maintaining a relatively simple overall structure.
Solution Approach 2:
The single pump structure is designed to perform multiple functions by incorporating two chambers that can independently deliver different medicaments at different rates. The pump serves both high-dose bolus injection and continuous low-concentration infusion functions within one device.
2Productivity
If high dose medicaments are injected rapidly, then curative effects are enhanced, but continuous infusion of low concentration medicaments cannot be achieved
Solution Approach 1:
The reservoir is divided into two separate lumens (first lumen and second lumen) that are separated by a septum with an outlet hole. This allows independent control of flow rates for high-dose and low-dose medicaments, enabling both rapid injection and continuous infusion modes simultaneously.
Solution Approach 2:
Different parts of the fluid communication system have different properties: the first passageway allows rapid flow for high-dose medicaments, while the second passageway with the smaller outlet hole provides restricted flow for continuous low-concentration infusion. Each pathway is optimized for its specific function.
3Measurement precision
If multiple medicaments are infused through separate devices, then each medicament can be controlled precisely, but the device complexity and patient burden increase
Solution Approach 1:
Two separate infusion functions are merged into a single pump device with two chambers. The device combines high-dose bolus injection and continuous low-concentration infusion capabilities in one unit, reducing the number of devices needed while maintaining precise control over each medicament's delivery.
Solution Approach 2:
The single infusion device is designed to perform multiple infusion functions simultaneously - delivering both high-dose medicaments and low-concentration medicaments through different passageways. This multi-functional design eliminates the need for multiple separate devices.
4Object-affected harmful factors
If continuous low concentration medicament infusion is provided, then side effects are reduced, but it cannot be combined with high dose medicament injection
Solution Approach 1:
The fluid system is segmented into two independent passageways that allow simultaneous operation of continuous low-concentration infusion and high-dose injection. The septum with outlet hole creates independent flow paths, enabling both therapeutic approaches to work together without interference.
Solution Approach 2:
The device maintains continuous low-concentration medicament infusion while allowing intermittent high-dose injections. Both functions operate simultaneously or alternately without interruption, ensuring continuous therapeutic action while reducing side effects through the low-concentration pathway.
Data Source
AI summary
An infusion device includes a pump forming front and rear chambers for receiving medicaments therein. The medicaments supplied from the two chambers are respectively transmitted into an elastic reservoir forming first and second lumens through first and second passageways. Then, the medicaments are infused into a person through a catheter which defines one passageway toward the human body. The first passageway is in fluid communication with the front chamber and second lumen. The second passageway is in fluid communication with the rear chamber, the first lumen, and the second lumen. By making the diameter of a second hole which connects the first lumen and second lumen smaller than a first hole which connects the first passageway and the first lumen, the medicament from the second chamber can be infused into patient with a low concentration.