Series-Filter Tissue Collector for Size-Specific Graft Selection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing devices for resecting and collecting tissue fragments do not effectively differentiate particles by size, which can affect the long-term performance of tissue grafts in vivo.
Innovation Solution
A device comprising a top housing, at least two filters with different pore sizes, a filter distractor, and a bottom housing, assembled together to form a container, allowing for the collection of tissue fragments based on variable sizes using universal adapters for connection to resecting and suction devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single filter with fixed pore size is used, then the device structure is simple, but it cannot collect tissue fragments of different sizes separately
Solution Approach 1:
The single filter is divided into multiple filters with different pore sizes (first filter, second filter, third filter) arranged in series. Each filter captures tissue fragments of specific size ranges, enabling separate collection of different sized fragments while maintaining a relatively simple overall device structure.
Solution Approach 2:
The device transitions from a single-dimensional filtration approach to a multi-dimensional approach by stacking filters with different pore sizes in series along the fluid flow path. This dimensional arrangement allows simultaneous filtration at multiple size thresholds without significantly increasing device footprint.
2Measurement precision
If multiple filters with different pore sizes are used, then tissue fragments can be differentiated by size, but the device complexity increases
Solution Approach 1:
The filtration function is segmented into multiple specialized filters, each with a specific pore size optimized for capturing particular tissue fragment size ranges. This segmentation achieves precise particle size differentiation while keeping each individual filter component simple and manageable.
Solution Approach 2:
The device incorporates universal adapters that allow the multi-filter system to interface with various surgical instruments and suction devices. This universality enables the complex filtration system to work with standard surgical equipment without requiring custom connections for each device type.
3Manufacturing precision
If filters are assembled in series, then tissue fragments are collected by size, but the assembly process becomes more complex
Solution Approach 1:
The assembly process is segmented into modular steps where each filter is independently positioned and secured in sequence along the fluid flow path. This modular segmentation allows for precise assembly of the filtration system while maintaining ease of manufacture through standardized connection interfaces.
Solution Approach 2:
The filters are pre-assembled in the correct series arrangement during device manufacturing, with proper orientation and spacing established beforehand. This preliminary action ensures that during surgical use, the device requires minimal assembly steps while maintaining the precise size-based sorting capability.
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
Enables the collection of tissue fragments of specific sizes, improving the long-term performance of tissue grafts by ensuring appropriate particle sizes are used in grafts.
Implementation Method 1
at least two filters each having a different pore size... assembled in series onto the filter distractor
Data Source
AI summary
Devices and methods for collecting tissue fragments of variable sizes from a surgical site are described herein. The devices can include at least two filters having a different pore size for the collection and sorting of tissue fragments by size.