Additive Syringe Metering for Buffered Anesthetic Delivery
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing syringes cause significant pain and discomfort during the injection and delivery of anesthetic agents, and there is a need for improved delivery systems that reduce pain and improve safety and efficiency.
Innovation Solution
A single-use additive syringe with a housing and adjustable actuator that includes a surface gutter and key mechanism, providing an audible and tactile response for precise metered delivery of buffering agents like sodium bicarbonate to anesthetic cartridges, ensuring proper alignment and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional syringes are used to deliver anesthetic agents, then the anesthetic can be administered, but significant pain and discomfort occur during injection and delivery
Solution Approach 1:
The patent introduces a buffering agent as an intermediary substance that is co-delivered with the anesthetic agent. This buffering agent modifies the pH of the anesthetic solution, reducing the pain and discomfort associated with injection while maintaining the anesthetic's effectiveness. The buffering agent acts as a mediator between the injection process and the patient's pain receptors.
Solution Approach 2:
The patent changes the chemical parameters of the anesthetic solution by adding buffering agents that alter the pH level. This parameter change transforms the harmful acidic environment created during injection into a more neutral and tolerable condition, reducing pain while preserving the anesthetic's numbing effect.
2Object-affected harmful factors
If buffering agents are added to reduce pain, then patient experience improves, but the complexity of the delivery system increases
Solution Approach 1:
The patent merges the anesthetic agent and buffering agent into a single integrated delivery system. Instead of requiring separate syringes or multiple steps, the buffering agent is incorporated into the same cartridge and delivery mechanism as the anesthetic, simplifying the overall process while achieving pain reduction.
Solution Approach 2:
The delivery system is designed to perform multiple functions simultaneously: delivering the anesthetic agent, delivering the buffering agent, and providing pain relief. This multi-functionality is achieved through a single cartridge design that contains both substances and a unified delivery mechanism, reducing system complexity despite the added functionality.
3Loss of substance
If precise metered delivery is implemented, then waste is reduced and safety is improved, but the device complexity increases
Solution Approach 1:
The cartridge is pre-filled with precise metered amounts of both the anesthetic agent and buffering agent during manufacturing. This preliminary action eliminates the need for complex metering mechanisms during use, as the correct dosages are already predetermined in the cartridge. The precision is achieved in advance, simplifying the actual delivery process.
Solution Approach 2:
The cartridge design allows the buffering agent to automatically mix with the anesthetic agent upon insertion into the syringe, without requiring additional manual intervention or complex metering mechanisms. The system self-regulates the mixing and delivery process, reducing operational complexity while maintaining precise dosing.
Data Source
AI summary
An additive syringe includes a housing and an adjustable actuator, the housing and actuatory mutually coupled, the housing having a surface gutter and the actuator having a surface key, the housing having a larger diameter than the actuator, and the housing having a plunger, the actuator having a needle supported by a chamber, the chamber aligning the needle with the plunger, and a dock formed in the housing or the actuator, the dock retaining a medicinal cartridge and aligning with the needle via the plunger to provide a metered quantity of buffering agent to the contents of the medicinal cartridge.