3D-Printed Swabs with Integral Custom Tips for Faster Production
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Solution Overview
Problem
Existing swabs for collecting biological samples face limitations such as insufficient manufacturing capacity during high demand periods, lengthy manufacturing lead times due to material attachment processes, and unsuitable tip portions for certain diagnostic testing applications.
Innovation Solution
The development of three-dimensional printed swabs with a shaft and tip portion integrally formed, utilizing a digital three-dimensional model for additive manufacturing, which eliminates the need for separate material attachment and allows for customized tip designs to enhance sample collection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional multi-material swabs are used with separate shaft and tip portion, then material compatibility for chemical reactions is improved, but manufacturing lead time increases due to attachment process
Solution Approach 1:
The patent combines the shaft and tip portion into a single integrally formed component made from a single material, eliminating the need for separate material attachment processes. This resolves the contradiction by removing the time-consuming attachment step while accepting the use of a single material that is chemically compatible with testing reagents.
Solution Approach 2:
The single material used in the swab is selected to serve multiple functions: providing structural integrity for the shaft and creating a chemically inert surface for the tip portion that is compatible with various testing chemicals. This universal material approach eliminates the need for specialized material attachments while maintaining reliability.
2Adaptability or versatility
If traditional multi-material swabs are used with separate shaft and tip portion, then functional suitability for different diagnostic tests is improved, but manufacturing capacity is reduced during high demand periods
Solution Approach 1:
By merging the shaft and tip portion into a single integrally formed component, the manufacturing process is simplified and accelerated, enabling production facilities to meet high demand periods. The single-material approach eliminates complex multi-material assembly steps that bottleneck manufacturing capacity.
Solution Approach 2:
The patent applies local quality by designing the tip portion with specific geometric features (such as porous structures, protrusions, or surface textures) that enhance sample collection capabilities for different diagnostic tests, while the entire swab remains made from a single material. This allows functional differentiation without requiring multiple materials.
3Reliability
If traditional swabs with separate materials are used, then sample collection effectiveness is improved, but manufacturing complexity increases
Solution Approach 1:
The patent merges the shaft and tip portion into a single integrally formed component, dramatically reducing manufacturing complexity by eliminating alignment, attachment, and quality control steps associated with joining separate parts. Sample collection effectiveness is maintained through optimized geometry of the monolithic structure.
Solution Approach 2:
The patent resolves the contradiction by moving from material-based differentiation to geometry-based differentiation. Complex three-dimensional structures are created within the single material to achieve effective sample collection, replacing the need for multi-material construction with sophisticated shape design.
Data Source
AI summary
A three-dimensional printed swab may include a shaft defining a longitudinal axis of the swab, and a tip portion integrally formed with the shaft. The tip portion may include a plurality of protrusions each extending outward from the shaft and transverse to the longitudinal axis. A method for fabricating a three-dimensional printed swab may include receiving a digital three-dimensional model corresponding to the swab, and integrally forming, via three-dimensional printing and based at least in part on the digital three-dimensional model, a shaft and a tip portion of the swab. The shaft may define a longitudinal axis of the swab. The tip portion may include a plurality of protrusions each extending outward from the shaft and transverse to the longitudinal axis.