Pulse Infusion Device With Bidirectional Pump
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Solution Overview
Problem
Current infusion pumps are inadequate for administering large volumes of anesthetic medication at high velocities required for continuous regional and local anesthesia, as they cannot withstand the necessary pressures and are not designed for rapid injection through thin, long catheters.
Innovation Solution
A pulse infusion system with a bidirectional pump and internal reservoir that generates defined volume and frequency pulses, capable of delivering at least 2 ml at a velocity of 5 ml/min, equipped with check valves to maintain stable flow and prevent backflow, and a programmable controller to adjust parameters according to patient needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional infusion pumps are used to administer anesthetic medication, then the pump structure is simple and easy to operate, but the pump cannot deliver large volumes at high velocities required for continuous regional and local anesthesia
Solution Approach 1:
The pump delivers medication in controlled pulses rather than continuous flow, allowing high velocity delivery during pulse phases while maintaining pressure control through periodic operation cycles with defined fill and deliver phases
Solution Approach 2:
The pump system is divided into separate functional modules including a reservoir, pump mechanism, and delivery system, allowing each component to be optimized for its specific function while maintaining overall system reliability
2Speed
If large volumes of medication are injected rapidly through thin, long catheters, then the anesthesia effect is improved, but the required pressure exceeds the pump's withstanding capability
Solution Approach 1:
The pump uses periodic pulsing to achieve high instantaneous velocities during the deliver phase while the fill phase allows pressure dissipation, preventing sustained high pressure conditions that would exceed pump capabilities
Solution Approach 2:
The pump dynamically adjusts its operation between fill and deliver phases, varying flow rates and pressures according to the specific requirements of the catheter and desired injection velocity
3Duration of action of moving object
If continuous medication flow is used for nerve bathing, then the anesthesia duration is extended, but the medication delivery becomes less efficient
Solution Approach 1:
The pulsed delivery mechanism creates periodic flow patterns that enhance medication distribution efficiency during each pulse while the cumulative effect over multiple pulses maintains extended anesthesia duration through sustained nerve bathing
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 system provides continuous and stable nerve bathing, enhancing post-operative pain therapy by ensuring efficient delivery of medication, addressing the limitations of existing pumps in handling high pressures and volumes.
Implementation Method 1
a bidirectional pump configured to pump infusion fluid from the external reservoir to the internal reservoir and further pump an infusion fluid pulse from the internal reservoir to be injected through a catheter
Implementation Method 2
The tubing system may further include a check valve proximate to the inlet and an anti-siphon check valve proximate to the outlet
Data Source
AI summary
Aspects of the invention are related to a method and a system for administrating an infusion liquid pulse. The system includes a tubing system having an inlet connected to an external reservoir adapted to contain infusion fluids and an outlet connected to a catheter. The tubing system includes a check valve proximate to the inlet and an anti-siphon valve proximate to the outlet. The system further includes an automatic pulse flow generation device. The automatic pulse flow generation device includes an internal reservoir and a bidirectional pump configured to pump infusion fluid from the external reservoir to the internal reservoir and further pump an infusion fluid pulse from the internal reservoir to be injected by the catheter, the infusion liquid pulse has a volume of at least 2 ml and a velocity of at least 5 ml/min.