Brush With Dual Rows For Tissue Scraping And Retention
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Solution Overview
Problem
Conventional brushes for cleaning or sampling body tissue are inefficient in freeing and retaining material, as they lack sufficient stiffness and structure to effectively collect and hold tissue samples.
Innovation Solution
A brush design featuring at least one row of brush hairs fixed to a strip, providing extra stiffness for improved scraping action while maintaining the material collection capacity, with the distal ends of both rows positioned at similar distances from the support for optimal interaction, and optionally featuring a wavy strip or triangular cross-section for enhanced retention and directional versatility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If brush hairs are made longer to improve scraping action, then material freeing capability is improved, but material retention capacity deteriorates
Solution Approach 1:
The brush hairs are divided into two distinct rows with different functions: the first row has longer hairs for scraping and freeing material, while the second row has shorter hairs for retaining and holding the freed material. This segmentation allows each row to be optimized for its specific function, resolving the contradiction between scraping capability and material retention.
Solution Approach 2:
Different portions of the brush are given different local qualities: the first row of brush hairs is made longer and stiffer for scraping action, while the second row is made shorter for material retention. This local differentiation allows the brush to simultaneously perform both scraping and retention functions without compromise.
2Ease of operation
If brush hairs are made stiffer to improve scraping action, then material freeing capability is improved, but brush flexibility deteriorates
Solution Approach 1:
The brush is segmented into two rows with different stiffness characteristics: the first row contains stiffer, longer hairs for scraping, while the second row contains more flexible, shorter hairs for retention. This segmentation allows the brush to maintain overall flexibility while providing stiff scraping elements where needed.
Solution Approach 2:
The first row of brush hairs is made stiffer locally to provide effective scraping action, while the second row maintains normal flexibility for material retention. This local quality differentiation resolves the contradiction by providing stiffness only where it is functionally required.
3Device complexity
If brush hairs are arranged in a single row for simplicity, then device complexity is reduced, but material collection capacity deteriorates
Solution Approach 1:
The brush structure is segmented into two distinct rows of brush hairs, each serving a specific function. This segmentation increases material collection capacity by providing both scraping and retention functions within the brush structure, while the arrangement remains relatively simple and straightforward.
Solution Approach 2:
The brush is designed with multi-functionality: the first row performs scraping and material freeing, while the second row performs material retention and holding. This universal design allows a single brush structure to perform multiple functions, increasing material collection capacity without requiring multiple separate tools.
Data Source
AI summary
The present invention relates to a brush (1) for cleaning or sampling body tissue. The brush (1) comprises a support (2) that is provided with at least one row (3) of brush hairs (5) as well as one second row (4) of brush hairs (16). The first and second rows are mutually parallel and are situated next to one another. Each brush hair (5,6) has a proximal end (7) facing the support (2) and a distal end (9) facing away from the support (2). The first row (3) of brush hairs (5) comprises a strip (30) that extends in the longitudinal direction of the first row (3) and a longitudinal side (32) of which is fixed to the support (2). The proximal ends (7) of the brush hairs (5) in the first row (3) are fixed to the other longitudinal side (34) of the strip (30).