Aspiration Catheter Collar Support for High-Pressure Jet Flow
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Solution Overview
Problem
There is a need for alternative medical devices and manufacturing methods that enhance the efficiency and structural integrity of aspiration medical devices used for procedures such as removing thrombogenic material, particularly in addressing the challenges posed by high-pressure and high-volume fluid flow through fluid jets.
Innovation Solution
The aspiration medical device incorporates a catheter shaft with a distal end region and an aspiration member featuring axially-spaced fluid jets, supported by collars that provide structural reinforcement and alignment of jet openings to manage fluid flow effectively, reducing erosion and enhancing the device's integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-pressure and high-volume fluid flow is used through fluid jets for aspiration, then the efficiency of removing thrombogenic material is improved, but the erosion and wear on device components increases
Solution Approach 1:
A collar component is introduced as an intermediary element positioned between the fluid jet and the catheter shaft wall. The collar includes a jet support region that receives the high-pressure fluid jet and a wall support region that contacts the catheter shaft wall, thereby mediating the interaction between the fluid jet and the shaft to reduce direct erosion and wear on the shaft.
Solution Approach 2:
The collar is divided into distinct functional regions: a jet support region that handles the high-pressure fluid flow and a wall support region that provides structural reinforcement to the catheter shaft. This segmentation allows each region to be optimized for its specific function while working together to reduce overall erosion and wear.
2Productivity
If fluid jets are used to facilitate aspiration, then the productivity is improved, but the structural integrity of the catheter shaft is compromised
Solution Approach 1:
The collar acts as a protective intermediary that shields the catheter shaft wall from direct exposure to high-pressure fluid jets. By positioning the collar between the jet and the shaft, the structural integrity of the shaft is preserved while still allowing the jet to facilitate effective aspiration.
Solution Approach 2:
The collar structure separates the fluid jet function from the shaft structure. The jet support region handles the high-pressure flow while the wall support region maintains the shaft's structural integrity, preventing compromise of the shaft despite the presence of powerful aspiration jets.
3Productivity
If the aspiration member is designed with multiple axially-spaced fluid jets, then the aspiration capability is improved, but the device complexity increases
Solution Approach 1:
Multiple fluid jets are integrated into a single aspiration member component, merging the functions of multiple jet openings into one unified structure. This is further combined with the collar component that serves multiple purposes: supporting the jets, reinforcing the shaft, and providing alignment. The merging reduces the number of separate components needed while maintaining enhanced aspiration 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
The solution enhances the structural integrity and efficiency of aspiration devices by managing high-pressure fluid flow, facilitating effective aspiration of thrombogenic material while minimizing wear and tear on the device components.
Implementation Method 1
high-pressure and high-volume fluid flow through fluid jets
Implementation Method 2
managing high-pressure fluid flow, facilitating effective aspiration of thrombogenic material while minimizing wear and tear on the device components
Data Source
AI summary
Aspiration medical devices and methods for making and using aspiration medical devices are disclosed. An example aspiration medical device may include a catheter shaft having a distal end region and defining an inflow orifice adjacent to the distal end region. An aspiration member may be disposed within the catheter shaft. The aspiration member may have a plurality of axially-spaced fluid jets formed therein. A collar may be disposed over the aspiration member. The collar may have a jet support region disposed adjacent to at least one of the fluid jets and a wall support region disposed adjacent to a wall of the catheter shaft.