Dual-Channel Tip Dispensing Device for Dental Materials
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Solution Overview
Problem
Existing dispensing syringes for dental materials, particularly self-adhesive luting agents and composites, lack the capability to sequentially dispense two separate components with different viscosities from independent channels without mixing, which is essential for optimal bonding performance and surface conditioning in restorative dentistry.
Innovation Solution
A device featuring at least two separate compartments with independent outlets, independent plungers, a locking mechanism, and a tip with multiple channels, allowing for the sequential dispensing of different fluids or semi-solids with varying viscosities without mixing, enabling precise control and alignment of the dispensing compartments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a common pushing piston is used to extrude both materials, then the device structure is simplified, but the two materials are extruded at the same time causing mixing
Solution Approach 1:
The single piston is segmented into two independent plungers that can move independently. Each plunger is responsible for extruding one specific material through its own channel, preventing mixing while maintaining separate control over each material's dispensing
Solution Approach 2:
The design transitions from a single-dimensional extrusion path to a multi-dimensional system with separate channels for each material. The dual-channel tip structure allows materials to be extruded through different spatial paths, preventing mixing at the outlet
2Device complexity
If a single tip with one channel is used, then the device structure is simplified, but it cannot dispense two different materials with different viscosities simultaneously
Solution Approach 1:
The single tip is segmented into a dual-channel tip structure with separate channels for each material. Each channel is optimized for its specific material's viscosity and flow characteristics, enabling simultaneous dispensing of two different materials without mixing
Solution Approach 2:
The dual-channel tip serves multiple functions: it can dispense different materials with different viscosities, control flow rates independently for each material, and maintain material separation throughout the dispensing process, all through a single integrated component
3Ease of operation
If independent compartments with independent outlets are used, then sequential dispensing of two-part systems is enabled, but the device complexity increases
Solution Approach 1:
The design merges multiple functions into integrated components: the chamber walls serve as both separation barriers and structural supports, the plungers provide both material propulsion and flow control, and the dual-channel tip integrates both material streams without requiring additional valves or complex switching mechanisms
Data Source
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AI summary
The present disclosure is directed to a device for dispensing at least two different fluids, semi-solids, or a combination thereof, comprising: at least one chamber comprising at least two separate compartments parallel to each other, preferably having different volumes, each compartment with an independent outlet; at least two independent plungers, configured to move independently, and in only a direction towards the independent outlet; a locking mechanism; and a tip comprising at least two channels, preferably having different areas, wherein each of the channels is in fluid communication with a correspondent independent outlet, and the area of each channel corresponds to an area of an independent outlet. Further systems comprising the device, are further disclosed.