Bipolar Pacemaker Electrode with Tangential Cathode
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Solution Overview
Problem
Existing myocardial pacemaker electrodes are too large for children's hearts, causing issues during bipolar stimulation, often requiring two electrodes for effective attachment.
Innovation Solution
A bipolar myocardial pacemaker electrode with a tangentially arranged cathode pole and a proximally positioned anode, utilizing a surgical thread for fixation, allowing the cathode to be optimally positioned within the myocardium without the need for a second separate electrode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If conventional myocardial pacemaker electrodes are used in children, then the electrode structure is complete and functional, but the electrode size is too large for the child's heart
Solution Approach 1:
The electrode is divided into two separate poles: a cathode pole (4) that is tangentially arranged on the heart surface and an anode pole (5) that is arranged proximally underneath the heart. This segmentation allows each pole to be optimized independently for size and function, enabling the cathode to be small enough for pediatric hearts while maintaining complete bipolar functionality
Solution Approach 2:
The cathode pole (4) is drawn over the surgical thread (7) into the myocardium, with the thread serving as a guide. The electrode structure is nested within the delivery system during insertion, allowing minimally invasive placement of the complete bipolar electrode through a single puncture site
2Device complexity
If conventional electrodes are used for bipolar stimulation in children, then stimulation function is achieved, but a second separate electrode is required
Solution Approach 1:
Both the cathode pole (4) and anode pole (5) are integrated into a single electrode structure that is delivered through one puncture site. The cathode pole is tangentially arranged on the heart surface while the anode pole is positioned proximally underneath the heart, combining both stimulation poles in one device rather than requiring two separate electrodes
Solution Approach 2:
The surgical thread (7) serves as an intermediary guide that facilitates precise positioning of the cathode pole (4) on the heart surface. The thread is inserted through the myocardium using a heart needle, and the cathode pole is drawn over the thread into the myocardium, allowing accurate tangential placement without requiring complex positioning mechanisms
3Ease of operation
If the cathode pole is tangentially arranged on the heart surface, then optimal positioning is achieved, but fixation complexity increases
Solution Approach 1:
The surgical thread (7) itself serves as the fixation mechanism through a simple knot that is tied at the puncture site. The thread remains in place to hold the cathode pole (4) tangentially on the heart surface, eliminating the need for separate fixation devices or complex anchoring mechanisms. The knot serves as a self-contained fixation solution
Solution Approach 2:
The surgical thread (7) provides flexible fixation that adapts to the heart's movement and shape. Unlike rigid fixation mechanisms, the thread and knot can accommodate cardiac motion while maintaining secure attachment of the cathode pole in the tangential position
Data Source
AI summary
The invention relates to a bipolar myocardial pacemaker electrode (1) consisting of a plug (2), a supply line (3), a cathode (4), an anode (5), surgical thread (7) and a fixation member (8), whereby the electrode (1) has an internal lumen and is freely movable on the thread (7); the thread (7) can be guided through the inner lumen of the electrode including the supply line and plug thereof, and distally supports the fixation member (8) in the form of a knot; the supply line (3) is externally insulated and has a distal cathode pole (4) tangentially arranged on the surface of the heart in the heart tissue (myocardium) in the usage position, wherein the cathode pole consists of a conically tapering coil and the supply line (3) has an anode pole (5) arranged proximally underneath the heart in the usage position.