Dilation Catheter Bend for Vascular Prosthesis Placement
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Solution Overview
Problem
Current vascular prosthesis implantation methods face challenges in accurately positioning and stabilizing the prosthesis within blood vessels, especially without clamping, due to blood flow, which complicates the placement and sealing process, increasing the risk of major or fatal blood loss.
Innovation Solution
A vascular prosthesis implant device featuring a dilation catheter with a unique design including a bend and upstream and downstream portions, allowing the balloon to be positioned parallel to the blood vessel's axis, ensuring accurate placement and maintenance of the stent and prosthesis, and incorporating sealing and stabilization means to secure the connection between the catheter and the vessel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the prosthesis is implanted without clamping the blood vessel, then the procedure can be performed more simply and quickly, but the positioning accuracy and seal quality deteriorate due to blood flow
Solution Approach 1:
The balloon is preliminarily positioned and secured to the dilation catheter before the implantation procedure begins. The downstream portion of the catheter is pre-formed to provide structural support that maintains balloon position during insertion, allowing the procedure to proceed without clamping while preserving positioning accuracy
Solution Approach 2:
The dilation catheter with its specialized downstream portion acts as an intermediary structure between the balloon and the blood vessel. This intermediary provides mechanical support and positioning control, enabling accurate prosthesis placement even when blood flow is not clamped, thus resolving the contradiction between procedural simplicity and positioning precision
2Ease of operation
If the balloon is positioned perpendicular to the puncture, then the implantation follows conventional methods, but the accuracy and simplicity of placement deteriorates
Solution Approach 1:
The downstream portion of the dilation catheter incorporates a bend or curvature that allows the balloon to be positioned at an optimal angle relative to the blood vessel. This curved geometry simplifies the insertion process while maintaining accurate placement, as the bend naturally guides the balloon into the correct position without requiring complex manual manipulation
Solution Approach 2:
The downstream portion of the catheter has specialized local geometry (bend or curve) that differs from the rest of the catheter body. This localized structural feature provides the specific functionality needed for accurate balloon positioning while keeping the rest of the device simple and easy to operate
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 device improves the accuracy and simplicity of vascular prosthesis implantation, reducing procedure duration and complexity, while enhancing the quality of the seal and connection between the prosthesis and the blood vessel, thereby minimizing blood loss risks.
Implementation Method 1
A balloon supplied with fluid by a dilation catheter presses on the stent—vascular prosthesis assembly in the wall of the blood vessel
Data Source
AI summary
Implantation device for implanting a prosthesis (110) in a vessel (1), including a balloon (128) and a dilation catheter (120) for supplying fluid to the balloon (128), the dilation catheter (120) having a proximal end, a distal end (124) and a distal part designed to be introduced into the vessel (1), characterized in that the distal part includes a bend (123) and also an upstream portion (121) and a downstream portion (122) that are contiguous to the bend and that are arranged between the bend and, respectively, the proximal end and the distal end (124).