Coronary Sinus Shunt Delivery Without Catheter Exchange
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Solution Overview
Problem
Traditional minimally invasive transcatheter delivery of medical implant devices, such as shunt devices, to the left atrial wall requires separate advancement of a puncture needle delivery catheter and a medical implant delivery catheter, leading to increased procedural complexity, trauma, and time due to the need for catheter exchange.
Innovation Solution
A medical implant delivery system that integrates a puncture needle and a medical implant device, such as a shunt device, allowing simultaneous delivery to the target tissue site without requiring exchange of catheters, utilizing an outer delivery catheter and a medical implant delivery catheter that can be advanced together through a common lumen, with features like expandable anchors and pre-formed curvatures for precise targeting and deployment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate puncture needle delivery catheter and medical implant delivery catheter are used, then the puncture needle and medical implant device can be delivered independently, but the procedural complexity increases and catheter exchange is required
Solution Approach 1:
The patent combines the puncture needle delivery function and medical implant delivery function into a single integrated delivery catheter system. The puncture needle is positioned at the distal end of the delivery catheter, and the medical implant device is advanced through the same catheter lumen, eliminating the need for separate catheters and exchange procedures.
Solution Approach 2:
The delivery catheter is designed to perform multiple functions: it serves as both the puncture needle delivery catheter and the medical implant delivery catheter. The same catheter structure accommodates both the puncture needle and the medical implant device, providing universal delivery capability for different components.
2Reliability
If separate catheters are used for puncture needle and medical implant delivery, then each component can be delivered separately, but procedure time increases due to catheter exchange
Solution Approach 1:
The integrated delivery catheter enables continuous delivery action without interruption for catheter exchange. The puncture needle and medical implant device are delivered sequentially through the same catheter in a continuous procedural flow, eliminating downtime and maintaining procedural momentum.
3Measurement precision
If separate catheter advancement is performed, then precise positioning can be achieved, but patient trauma increases due to multiple catheter insertions
Solution Approach 1:
The patent merges multiple catheter insertions into a single catheter insertion event. By delivering both the puncture needle and medical implant device through one catheter, the number of times the catheter needs to be inserted into the patient is reduced, thereby minimizing patient trauma while maintaining delivery precision.
Data Source
AI summary
A blood flow pathway is formed between a left atrium and a coronary sinus for relieving elevated left atrial pressure. The treatment method includes providing first and second delivery catheters, wherein a medical device is carried by the second delivery catheter. A side outlet opening of the first delivery catheter is positioned within the coronary sinus and oriented toward a left atrium. An anchor on the first delivery catheter contacts an inner surface of the coronary sinus for stabilization. A distal portion of the second delivery catheter is advanced through the side outlet opening. A puncture component is then passed through a target wall portion for creating the blood flow pathway. The medical device is positioned in the opening.