Disc-Shaped Clot Catcher Sieve Surface for Extracorporeal Blood Circuits
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing clot catchers in extracorporeal blood circuits often face challenges with clogging and space efficiency, particularly due to their cylindrical or conical designs which can lead to suboptimal flow conditions and increased risk of clot formation.
Innovation Solution
A disc-shaped clot catcher with a sieve surface designed to collect and potentially dissolve clots, featuring a mechanically effective screening surface with adjustable passage openings and a hemocompatible material composition, allowing for optimal flow and reduced clot growth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cylindrical or conical designs are used for clot catchers, then they can capture clots in extracorporeal blood circuits, but they lead to suboptimal flow conditions and increased risk of clot formation
Solution Approach 1:
The patent applies curvature by transitioning from cylindrical/conical straight edges to a disc-shaped design with rounded perimeter. This curved geometry eliminates sharp edges that could trigger clot formation, while maintaining effective clot capture capability through the sieve surface.
2Reliability
If traditional clot catcher designs are used, then they can filter blood, but they are prone to clogging and occupy excessive space
Solution Approach 1:
The patent transitions from three-dimensional cylindrical/conical volumes to a two-dimensional disc-shaped structure. This dimensional reduction maintains filtering capability through the sieve surface while dramatically reducing the space occupied by the device.
3Productivity
If passage openings are made larger to improve flow, then flow conditions are optimized, but clot retention capability is reduced
Solution Approach 1:
The patent optimizes the parameters of passage openings (size, shape, distribution pattern) to achieve a balance between flow rate and clot retention. The specific configuration of openings in the disc-shaped sieve surface allows adequate flow while maintaining effective clot capture.
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 disc-shaped design prevents clogging, optimizes flow conditions, and reduces the risk of clot formation, while the adjustable passage openings and hemocompatible materials enhance the clot catcher's effectiveness and safety in extracorporeal blood circuits.
Implementation Method 1
The screen surface has openings through which the fluid can flow from the inflow side to the outflow side. These openings can be used to achieve a mechanical filtering or screening effect. The dimensions of the openings or the mesh size of the screen surface can be selected such that the clots are retained on the inflow side of the inflowing fluids due to their size.
Implementation Method 2
A chemical filtering or sieving effect can be achieved by chemically binding the clots to the sieve surface and/or within the sieve surface, for example, in its pores. The clots can be reversibly or irreversibly bound to the sieve surface.
Implementation Method 3
The clots can be physically adsorbed to the sieve surface.
Implementation Method 4
The clot catcher can be made at least partially from a hemocompatible base material. The base material is preferably coated with one or more hemocompatible materials.
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
The present invention relates to a clot catcher (100) which has a disc-shaped sieve surface (1) for collecting clots in a fluid flowing through the sieve surface (1). It further relates to an external functional device, a blood circulation system, and a treatment device.