Spindle-Based Medical Delivery for Clog-Free Consistent Dosing
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Solution Overview
Problem
Conventional medical devices for delivering fluids and powders, such as hemostatic agents, suffer from clogging, inconsistent flow rates, and pressure variations, leading to inaccurate dosing and increased procedure time and cost.
Innovation Solution
A medical system with a handle and barrel assembly featuring a spindle with radially arranged enclosures, a locking mechanism, and a catheter, which allows controlled delivery of a mixture of propellant fluid and medical agent to a target site, preventing clogging and ensuring consistent dosing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional catheters are used to deliver fluids and powders, then the device structure is simple, but clogging occurs and flow rate is inconsistent
Solution Approach 1:
The delivery device is segmented into multiple functional components: a handle assembly with a chamber for receiving and storing medical agents, a barrel assembly with a lumen for fluid passage, and a spindle assembly with enclosures for controlled dispensing. This segmentation allows each component to perform its specific function optimally while preventing clogging through proper separation of storage, mixing, and delivery functions.
Solution Approach 2:
A propellant fluid serves as an intermediary medium between the medical agent stored in the handle chamber and the target site. The propellant fluid facilitates consistent delivery by maintaining stable flow rates and pressures, preventing direct contact between the medical agent and the delivery catheter that would cause clogging, while still enabling effective transport of the medical agent to the target location.
2Measurement precision
If conventional dispensing methods are used, then the procedure is fast, but dosing accuracy is poor due to flow rate variations
Solution Approach 1:
The device incorporates control mechanisms that monitor and regulate the dispensing process in real-time. The locking mechanism provides feedback control by preventing spindle rotation when enclosures are not properly positioned, ensuring accurate dosing. The system maintains stable flow rates through regulated propellant fluid delivery, allowing precise control of the amount of medical agent delivered to the target site.
Solution Approach 2:
The handle chamber is pre-configured with compartments for storing multiple medical agents, and the spindle assembly is pre-positioned with enclosures that can be sequentially activated. This preliminary preparation allows for rapid, accurate dosing without requiring complex real-time calculations or adjustments during the procedure, thereby maintaining both speed and precision.
3Stability of the object's composition
If conventional delivery systems are used, then the device is simple to operate, but pressure variations cause inconsistent material delivery
Solution Approach 1:
The system controls and stabilizes critical parameters including pressure and flow rate through the propellant fluid delivery mechanism. By regulating these parameters, the system maintains consistent delivery of the medical agent mixture to the target site. The locking mechanism also controls the rotational parameter of the spindle to ensure precise and repeatable dosing across multiple administrations.
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 ensures precise and consistent delivery of medical agents by preventing clogging and maintaining stable flow rates, thereby improving procedure accuracy and reducing time and cost.
Implementation Method 1
A propellant fluid may be configured to mix with a medical agent in the handle chamber dispensed by one or more of the plurality of spindle enclosures, and wherein the mixture may be configured to be supplied to a target site via the catheter.
Data Source
AI summary
A medical system includes a handle having (1) a handle chamber including an outlet and (2) a barrel extending into the handle chamber and defining a lumen having a longitudinal axis, and a spindle movably disposed within the lumen of the barrel, the spindle including a plurality of spindle enclosures, and wherein the spindle is configured to move between a first configuration, in which at least a portion of each of the plurality of spindle enclosures is positioned within a first portion of the lumen within the handle chamber, and a second configuration, in which at least the portion of each of the plurality of spindle enclosures is positioned in a second portion of the lumen outside the handle chamber.