Trans-radial Catheter Steering Contralateral Access
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current catheter technologies face challenges in accessing contralateral and ipsilateral carotid and vertebral circulations via trans-radial vascular access, leading to increased risks and complications during medical procedures, particularly with the use of high doses of anticoagulation and antiplatelet therapies.
Innovation Solution
A primary catheter with a length of 10 cm-180 cm and external diameter of 0.5Fr-35Fr, incorporating at least one working lumen, pulley wires for steering, and optional additional lumens for balloon inflation and irrigation, allowing for improved access and reduced tissue injury through a single radial artery approach, enabling procedures like cerebral angiograms and complete heart catheterization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional catheterization techniques are used to access contralateral carotid and vertebral circulations, then access can be established, but the procedure becomes difficult and increases patient risk
Solution Approach 1:
The catheter is divided into multiple segments including a first catheter element and a second catheter element that can be selectively deployed. The first element provides initial access while the second element extends reach to contralateral vessels, breaking down the complex access problem into manageable stages
Solution Approach 2:
The second catheter element is nested within or alongside the first catheter element. This nested configuration allows the system to maintain a compact profile during insertion while enabling extended reach when deployed, facilitating access to difficult-to-reach contralateral carotid and vertebral circulations
2Adaptability or versatility
If multiple access ports are created for various procedures, then more procedures can be performed, but the risk of complications and tissue injury increases
Solution Approach 1:
The catheter system is designed as a universal access platform that can perform multiple functions including cerebral angiography, carotid artery access, and vertebral artery access through a single radial puncture site. The selectively deployable elements allow one catheter to replace what would traditionally require multiple access sites
Solution Approach 2:
The patent combines multiple access capabilities into a single integrated catheter system. By merging the functions of multiple catheters into one device with selective deployment, the system reduces the number of puncture sites needed while maintaining the ability to access multiple vascular territories
3Reliability
If trans-radial access is used instead of transfemoral access, then access-site complication rates decrease, but access to contralateral carotid and vertebral circulations becomes difficult
Solution Approach 1:
The catheter system transitions from a static single-element design to a dynamic multi-element configuration. The selectively deployable second element allows the catheter to adapt its shape and reach dynamically, enabling trans-radial access operators to reach contralateral vessels that would be inaccessible with traditional rigid catheters
Data Source
AI summary
Devices and methods for establishing trans-radial access for medical intervention are described. In particular, some embodiments are optimized for consistently safely achieving complete cerebral angiography via a single trans-radial access site. A system may include a catheter with at least two active steering sites. Some embodiments may include at least one balloon. The methods include using said steering mechanisms to help guide and support said catheter. In some embodiments additional use is made of at least one vascular arch to provide further support and prevent kickback and prolapse of said catheter and any additional devices passed therethrough.