Integrated Balloon-Stent Catheter for Single-Insertion Deployment
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Solution Overview
Problem
The existing vascular stent implantation process requires multiple insertions of micro catheters and balloon catheters, leading to complications and increased operation time.
Innovation Solution
A balloon stent mounting device with a balloon dilatation catheter and a stent release tube, allowing a self-expandable stent to be delivered and mounted with a single insertion, using a micro guidewire to guide the expansion part to the lesion site and a stent release tube to push the stent out after detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple instrument exchanges (micro catheter and balloon catheter) are performed during stent implantation, then the stent can be delivered and deployed, but the operation time increases and complications increase
Solution Approach 1:
The patent combines the micro catheter and balloon catheter into a single integrated delivery system. The stent is mounted on a delivery catheter that integrates both the micro catheter function (guidewire passage) and balloon catheter function (lesion pre-expansion and stent deployment) into one device, eliminating the need for sequential instrument exchanges and reducing overall procedure time
2Reliability
If multiple instrument exchanges are performed during stent implantation, then the stent can be delivered and deployed, but the number of operation steps increases and complications increase
Solution Approach 1:
The patent merges multiple functions (guidewire delivery, lesion pre-expansion, stent delivery, and stent deployment) into a single integrated catheter system. This reduces the number of separate instruments that need to be exchanged and simplifies the overall procedural steps while maintaining all necessary functions
Solution Approach 2:
The delivery catheter is designed with multi-functionality, serving as both a micro catheter for guidewire passage and a balloon catheter for lesion preparation and stent deployment. This universal design eliminates the need for separate specialized instruments for each step of the procedure
3Reliability
If multiple instrument exchanges are performed during stent implantation, then the stent can be delivered and deployed, but complications increase
Solution Approach 1:
By combining multiple instrument functions into one delivery system, the patent minimizes the number of times instruments need to be inserted and exchanged within the patient's body. This reduction in instrument exchanges directly decreases the opportunity for complications such as vessel damage, thrombus formation, or embolization events
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
Reduces operation steps and time, minimizes instrument exchanges, and improves the success rate by enabling a single catheter insertion for stent delivery and vessel dilation.
Implementation Method 1
A self-expandable stent is slidably mounted in the first through hole. The self-expandable stent is located at the distal end of the balloon dilatation catheter.
Implementation Method 2
The expansion part expands to stretch out the lesion site.
Data Source
AI summary
Provided are a balloon stent mounting device and a stent mounting method. The balloon stent mounting device includes a balloon dilatation catheter and a stent release tube. The balloon dilatation catheter is provided with a first through hole along the length direction. A threading hole is disposed on the side wall of the first through hole. The micro guidewire enters the first through hole through the distal end of the balloon dilatation catheter and passes through the threading hole. An expansion part is disposed at a distal end of the balloon dilatation catheter. A self-expandable stent can be slidably mounted in the first through hole. The self-expandable stent is located at the distal end of the balloon dilatation catheter. The stent release tube is slidably disposed in the first through hole of the balloon dilatation catheter. A distal end of the stent release tube abuts against the self-expandable stent.