Syringe Holding Puck Multi-Point Support for Oven-Baking Tip Strength
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Solution Overview
Problem
Existing syringe barrel holding pucks cause glass-on-metal contact at critical areas, leading to weakened syringe tips during oven baking, which can result in tip breakage.
Innovation Solution
A holding puck design with a multi-point contact system, including a support platform orthogonal to the longitudinal axis, minimizes glass-on-metal contact at critical areas by distributing the syringe barrel's weight across multiple contact points, primarily supporting the tip and avoiding contact at tip grooves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a solid base chamber design is used to hold the syringe tip, then the holding puck provides stable support, but glass-on-metal contact at tip grooves weakens the syringe tip
Solution Approach 1:
The patent applies local quality by making the support surface compliant specifically at the tip groove contact area, while maintaining structural rigidity in other parts of the holding puck. The foam material provides localized cushioning exactly where needed (at the tip grooves) without compromising the overall holding stability provided by the solid base and chamber structure.
Solution Approach 2:
The holding puck uses composite materials by combining a solid base material (提供结构支撑) with a foam material (提供 compliant support). This composite structure allows the hard base to maintain positional stability while the soft foam portion prevents glass-on-metal contact at critical areas, resolving the contradiction between stability and tip strength.
2Temperature
If metal holding pucks are used for high temperature durability, then the pucks can withstand oven baking conditions, but glass-on-metal contact causes tip weakening
Solution Approach 1:
The patent resolves the thermal resistance vs. tip strength contradiction by using composite materials: the solid base provides high-temperature durability suitable for oven baking, while the foam material portion contacts the tip grooves to prevent glass-on-metal interaction. This allows the system to withstand thermal conditions without compromising tip strength.
Solution Approach 2:
The foam material acts as an intermediary between the metal holding puck and the glass syringe tip. It mediates the contact interaction, allowing the metal structure to provide thermal resistance while the foam prevents direct glass-on-metal contact at the tip grooves during high-temperature baking.
3Reliability
If the syringe barrel is supported at multiple points, then stability is improved, but contact at tip grooves still occurs and weakens the tip
Solution Approach 1:
The patent applies local quality by differentiating the contact characteristics at different support points. The chamber provides stable support at the barrel body, while the foam material specifically modifies the contact quality at the tip groove area to be compliant rather than rigid, preventing tip weakening while maintaining overall stability.
Solution Approach 2:
The patent changes the physical parameter of the support surface from rigid (metal) to compliant (foam) specifically at the tip contact area. This parameter change allows multiple support points to maintain stability while the modified contact parameter (compliance) at the tip prevents glass-on-metal contact and tip weakening.
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 new design maintains syringe tip strength and resistance, reducing the risk of breakage by at least 53 N compared to prior art, ensuring effective retention and annealing of silicone coatings without compromising structural integrity.
Implementation Method 1
it is common for the coating to be annealed to form so-called 'baked silicone', in order to make the coating less reactant with the drug/medicament contained in the syringe barrel
Data Source
Figure 1A~1B
Figure 2
Figure 3
AI summary
Provided herein is a holding puck for retaining a syringe barrel. The holding puck includes a base member and a barrel holder, with the barrel holder including a cylindrical sidewall and a bottom wall having a bottom opening formed therein. A support bracket of the holding puck is affixed to the base member and includes a support platform positioned beneath the barrel holder and oriented orthogonal to a longitudinal axis thereof, with the support platform aligned with the bottom opening. When a syringe barrel is retained in the holding puck, a multi-point contact is made between the syringe barrel and the holding puck, with a first contact point made between a distal end of the tip and the support platform and a second contact point made between a side surface of the tip and an inner edge of the bottom wall that defines the bottom opening.