Powered Syringe Assembly for Endovascular Balloon Control
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Solution Overview
Problem
Current methods for inflating and deflating dilatation balloons in percutaneous transluminal angioplasty and valvuloplasty procedures require significant manual force, making it difficult to achieve rapid and precise control, which is crucial for effective blood flow management during these procedures.
Innovation Solution
A powered syringe assembly connected to an endovascular device, featuring a reusable drive unit and a disposable syringe unit with a drive motor and pinion mechanism, allowing for controlled and rapid retraction and withdrawal of the plunger to inflate and deflate balloons, with ergonomic design and digital display for precise operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a manual syringe or inflation device is used to inflate the dilatation balloon, then the device structure remains simple, but the physician must exert tremendous manual force and cannot achieve rapid or precise control of balloon inflation
Solution Approach 1:
The patent replaces the manual mechanical syringe system with an automated inflation device that uses a motor-driven mechanism. The motor automatically drives the plunger to inflate the balloon, eliminating the need for the physician to exert manual force while providing precise control through electronic or mechanical actuation mechanisms.
Solution Approach 2:
The inflation device is designed to perform the inflation function autonomously without requiring manual operation. The device self-actuates the plunger movement through an integrated motor or spring mechanism, allowing the system to service itself during the inflation process while the physician simply needs to position and trigger the device.
2Speed
If rapid balloon inflation is achieved through manual effort, then the inflation speed increases, but the precision and control of the inflation process deteriorates
Solution Approach 1:
The automated inflation device incorporates feedback mechanisms that monitor balloon pressure and plunger position in real-time. This feedback allows the control system to adjust the inflation rate dynamically, maintaining both high speed and precise control by responding to actual balloon conditions rather than relying on fixed mechanical movement.
Solution Approach 2:
The device employs dynamic control where the plunger movement rate is not fixed but can be adjusted during operation. The motor-driven system can vary its speed and acceleration profiles to achieve rapid inflation when needed while maintaining precision through programmable motion control algorithms that adapt to the specific procedural requirements.
3Measurement precision
If a powered syringe assembly with motor and pinion mechanism is used, then precise and controlled plunger retraction is achieved, but the device complexity increases
Solution Approach 1:
The powered syringe assembly is divided into modular components: a disposable syringe unit containing the plunger and barrel, and a reusable drive unit containing the motor and pinion mechanism. This segmentation allows the complex powered components to be separated from the sterile disposable portion, maintaining precision functionality while simplifying sterilization and replacement procedures.
Solution Approach 2:
The reusable drive unit with motor and pinion mechanism is designed to work with multiple different syringe types and applications. By creating a universal interface and control system that can accommodate various syringe configurations, the patent reduces overall system complexity through standardization rather than requiring unique complex mechanisms for each specific application.
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
Enables user-friendly, precise, and controlled balloon inflation and deflation, improving the efficiency and effectiveness of medical procedures by reducing manual effort and enhancing precision, particularly beneficial for PTA and PTV procedures.
Implementation Method 1
a drive motor and pinion mechanism, allowing for controlled and rapid retraction and withdrawal of the plunger
Implementation Method 2
a reusable drive unit and a disposable syringe unit. More particularly, the reusable drive unit includes a housing and a drive motor having a pinion. The disposable syringe unit includes a syringe body, a plunger received in the syringe body, a spindle nut carried on the syringe body and a threaded spindle carried on the plunger wherein the disposable syringe unit is held in the housing and the pinion meshes with and drives the spindle nut
Data Source
AI summary
An apparatus (10) includes an endovascular device (12) connected to a configured-to-be-powered syringe assembly (30). That configured-to-be-powered syringe assembly includes a reusable drive unit (36) and a disposable syringe unit (34).