Dry Buffering Cartridge for Stable Dental Anesthetic Mixing
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Solution Overview
Problem
Existing dental anesthetic buffering systems are complex, costly, and difficult to integrate with standard dental anesthetic syringes, often requiring specialized equipment and training, while adding a buffer solution prior to use reduces shelf life and stability.
Innovation Solution
A system using a vial with a dry buffering material, such as sodium bicarbonate, that is pierced by the syringe needle to mix with acidic anesthetic immediately before use, allowing standard syringes and cartridges to be used with selectable doses for optimal patient comfort and efficacy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a buffer solution is added to dental anesthetic to improve patient comfort, then the acidity is reduced and comfort is improved, but the shelf life and stability of the anesthetic are significantly reduced
Solution Approach 1:
The invention changes the physical state of the buffering material from liquid to dry powder form. This parameter change allows the buffering agent to remain stable and effective without compromising the anesthetic's shelf life, as the dry form does not initiate the chemical buffering reaction until contact with the anesthetic solution
Solution Approach 2:
The dry buffering material is pre-prepared in a stable form that can be stored for extended periods without degradation. The buffering action is preliminarily prepared but not activated until the moment of use, when the dry material contacts the anesthetic solution
2Object-affected harmful factors
If existing buffering devices are used to add buffer solution to dental anesthetic, then buffering is achieved, but the device complexity and cost increase significantly
Solution Approach 1:
The invention extracts the buffering function from complex mechanical devices and integrates it directly into the anesthetic cartridge itself. The buffering material is incorporated into the cartridge, eliminating the need for external buffering equipment, specialized syringes, or complex mixing mechanisms
Solution Approach 2:
The anesthetic cartridge is designed to serve multiple functions: storing the anesthetic, providing the buffering agent, and enabling mixing. This multi-functional design eliminates the need for separate buffering devices and makes the system compatible with standard dental syringes
3Loss of time
If buffer solution is added too early to dental anesthetic, then the anesthetic can be prepared in advance, but the stability and efficacy of the anesthetic are significantly reduced
Solution Approach 1:
The invention changes the buffering agent from liquid to dry powder form, which allows the anesthetic to be prepared in advance without stability issues. The dry form remains inert until contact with the anesthetic solution, enabling last-minute preparation without compromising efficacy
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
Provides a simple, cost-effective method to buffer dental anesthetics just prior to use, maintaining stability and shelf life, improving patient comfort, and enabling easy integration with standard dental equipment.
Implementation Method 1
A buffer solution, such as a solution of sodium bicarbonate, is often used to alkalinize the dental anesthetic prior to use
Data Source
AI summary
A dental anesthetic buffering system using pre-dosed dry buffering material. Liquid dental anesthetic from a standard anesthetic cartridge or carpule is injected into a dry buffering material buffering the anesthetic improving efficacy and comfort. A buffer dosing cartridge or carpule configured to fit within an anesthetic syringe is pre-dosed with a dry buffering material and injected with a liquid anesthetic from a standard anesthetic cartridge or carpule forming a buffered anesthetic cartridge or carpule. The buffered anesthetic cartridge or carpule is placed in an anesthetic syringe used to immediately administer the buffered anesthetic to a patient. Ease-of-use, effectiveness, and comfort to the patient are provided making dentistry easier.