Motor-Driven Syringe Dispenser for Root Canal Irrigation
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Solution Overview
Problem
Existing syringe dispensers for root canal therapy require manual effort to express irrigants, which can lead to variable flow rates and reduced efficiency due to user fatigue and resistance from the root canal, limiting the effectiveness of irrigation.
Innovation Solution
A motor-driven syringe dispenser system utilizing a standard endodontic motor or battery-powered DC motor with a gear reduction mechanism to control the plunger movement, allowing for consistent and higher flow rates of irrigant delivery through pre-programmed settings and torque control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a clinician manually depresses the plunger of the syringe, then the irrigant can be expressed from the irrigation needle, but the flow rate becomes variable and user fatigue reduces efficiency
Solution Approach 1:
The patent replaces the manual mechanical plunger depression with an automated motor-driven system. A motor connects through a transmission mechanism (gears and pulleys) to drive the plunger, eliminating the need for manual effort and maintaining consistent flow rates without user fatigue.
Solution Approach 2:
The syringe dispenser is designed to automatically control plunger movement through pre-programmed settings. The system self-regulates the irrigation process by controlling motor speed and plunger displacement, eliminating the need for continuous manual intervention.
2Quantity of substance
If a larger syringe is used to hold more irrigant volume, then the syringe capacity increases, but it becomes more difficult to express the irrigant at high flow rates
Solution Approach 1:
The motor-driven transmission system provides controlled mechanical advantage through gears and pulleys, enabling the effortless expression of large-volume syringes at high flow rates. The automated system overcomes the resistance that would make manual operation difficult.
Solution Approach 2:
The transmission mechanism allows adjustment of mechanical parameters (gear ratios, pulley sizes) to optimize the force application on the plunger. This enables the system to adapt to different syringe sizes and maintain efficient irrigation expression regardless of volume.
3Productivity
If the flow rate of irrigant is increased to enhance cleaning ability, then the velocity and pressure increase, but the resistance from the root canal increases
Solution Approach 1:
The motor control system responds to back pressure conditions by adjusting motor torque and speed. When resistance increases, the system automatically compensates to maintain the desired flow rate, ensuring consistent cleaning effectiveness throughout the irrigation process.
Solution Approach 2:
The transmission mechanism provides dynamic torque multiplication through variable gear engagement. As back pressure increases, the motor-driven system automatically increases force application through the gear train, maintaining optimal plunger velocity despite rising resistance.
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 motor-driven syringe dispenser provides a consistent and potentially higher flow rate of irrigant, increasing the velocity and pressure, thereby enhancing the cleaning ability within the root canal, reducing user fatigue, and improving the efficiency of the irrigation process.
Implementation Method 1
a motor driven syringe dispenser... a battery powered syringe dispenser may be used... configured to be hand-held and may have buttons to control a DC powered motor
Implementation Method 2
a DC powered motor that may be provided with a gear reduction mechanism
Implementation Method 3
a slider... and a connection for an endodontic motor wherein the syringe dispenser drives a syringe... to express irrigant
Data Source
AI summary
A motor driven syringe dispenser which has a syringe mounting part, a slider, and a connection for an endodontic motor. The syringe dispenser connects to an endodontic motor which is used to drive a plunger of a syringe placed in the syringe mounting part thereby expressing irrigant into a root canal for root canal therapy.