Myocardial Injection Catheter Alignment Using a Radiopaque Marker
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Solution Overview
Problem
Existing catheter devices face challenges in accurately aligning a lateral opening with the myocardium during drug solution injection treatments, complicating the efficiency of the procedure.
Innovation Solution
A surgical method involving a catheter with a lateral opening and a radiopaque marker for precise alignment, combined with a puncture needle for injecting therapeutic cells or chemical compounds into the myocardium.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a lateral opening is provided in the catheter for projecting the puncture needle, then the puncture needle can be delivered to the myocardium, but the alignment between the lateral opening and the myocardium becomes difficult and time-consuming
Solution Approach 1:
The catheter incorporates a radiopaque marker that appears as a distinct shape (such as a triangle or arrow) on fluoroscopic imaging. This marker is positioned at a predetermined location relative to the lateral opening, allowing the operator to visually identify the orientation and alignment of the lateral opening with the myocardium during the procedure, thereby simplifying the alignment process and reducing procedure time
2Measurement precision
If the catheter is rotated and aligned manually during the procedure, then the lateral opening can face the myocardium, but the precision and efficiency of alignment is insufficient
Solution Approach 1:
The radiopaque marker provides a clear visual indicator on fluoroscopic images, enabling precise determination of the lateral opening's orientation. The marker's predetermined shape and position relative to the lateral opening allow for accurate alignment with the myocardium, improving both alignment precision and overall treatment efficiency
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
Enhances the alignment between the catheter's lateral opening and the myocardium, improving the efficiency and accuracy of drug solution injection treatments.
Implementation Method 1
a radiopaque marker indicating a position of the lateral opening; rotating the catheter while observing the radiopaque marker
Data Source
AI summary
A surgical method for delivering a drug solution to myocardium includes the steps of: inserting a catheter into at least one of a coronary artery and a coronary vein, the catheter having a lumen, a lateral opening connecting the lumen and outside of the catheter, and a radiopaque marker indicating a position of the lateral opening; rotating the catheter while observing the marker such that an orientation of the lateral opening becomes a predetermined orientation with respect to a treatment target site; projecting a puncture needle through the lateral opening; piercing a myocardium of the treatment target site with the puncture needle; and injecting a drug solution containing therapeutic cells or chemical compounds from the puncture needle into the myocardium.