Rotatable Two-Component Mixing Capsule for Dental Compositions
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Solution Overview
Problem
Existing mixing capsules in the dental field are inadequate for mixing two-component compositions, particularly failing to effectively mix pasty to kneadable or pasty to solid thixotropic compositions, and often designed only for liquid monomer and powdered components, with insufficient locking mechanisms to prevent accidental puncture of the separating film.
Innovation Solution
A two-component mixing capsule with a rotatable design, featuring a capsule housing with a discharge spout, a rotatably mounted first mixing chamber that can be separated and integrated with a second mixing chamber, allowing for the mixing and application of pasty, kneadable, or solid dental compositions, using a rotary element and a sealing piston for secure mixing and discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a mixing capsule is designed with a rotatable first mixing chamber that can be separated from the second mixing chamber, then the capability to mix pasty to kneadable or solid compositions is improved, but the device complexity increases
Solution Approach 1:
The first mixing chamber is made rotatable relative to the second mixing chamber, allowing dynamic repositioning between separated storage position and integrated mixing position. This rotational mechanism enables the capsule to adapt between different operational modes (storage vs. mixing) without requiring multiple separate devices.
Solution Approach 2:
The mixing capsule is divided into two separate mixing chambers that can be independently positioned. The first mixing chamber can be rotated to be either separated from or integrated with the second mixing chamber, allowing flexible configuration for different composition types while maintaining a single unified device structure.
2Reliability
If locking mechanisms are added to prevent accidental puncture of the separating film, then reliability is improved, but device complexity increases
Solution Approach 1:
A protective film is introduced as an intermediary element between the two mixing chambers. This film acts as a barrier that prevents accidental contact and puncture of the separating barrier, thereby improving reliability without requiring complex locking mechanisms. The film can be easily punctured by a controlled piston action when mixing is intended.
3Adaptability or versatility
If the mixing capsule is designed to mix pasty to kneadable compositions, then adaptability is improved, but ease of manufacture decreases
Solution Approach 1:
The mixing capsule utilizes changes in material parameters, specifically the thixotropic properties of the compositions. The capsule design allows the compositions to transition from a more fluid state during mixing to a more solid/kneadable state during storage and application. This parameter change approach enables the capsule to handle various composition viscosities without requiring complex manufacturing processes.
Data Source
AI summary
The disclosure relates to a two-component mixing capsule for intake and for mixing of two compositions with a capsule housing having a discharge spout at its front end, wherein the mixing capsule comprises a first mixing chamber and a second mixing chamber, wherein the two mixing chambers may be separated from each other for storage or for transport, by the first mixing chamber being rotatable into a first position in which the first mixing chamber is separated from mixing chamber, by a rotatably mounted handhold element, the rotational axis of which is approximately perpendicularly arranged to the longitudinal axis of the mixing capsule. The two mixing chambers form a common mixing chamber by rotating the first mixing chamber into a second position in which the central axes of the first and second mixing chamber are substantially coaxially arranged, wherein the composition may be discharged after mixing by attaching a squeezing piston.