Leadless Cardiac Pacing Device Angled Housing Coronary Sinus
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Solution Overview
Problem
Conventional pacemakers require leads that extend from a pulse generator to an electrode, which can be cumbersome and may not effectively deliver pacing pulses to all chambers of the heart, particularly in cases of cardiac arrhythmias like atrial fibrillation or ventricular fibrillation.
Innovation Solution
A leadless cardiac pacing device with an angled housing and electrodes designed to be positioned within the coronary sinus, allowing for direct electrical stimulation and sensing across heart chambers, facilitated by a guide wire port for easy navigation through the vasculature and anchors for secure placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional pacemakers use leads extending from pulse generator to electrode, then electrical stimulation can be delivered to heart chambers, but the device becomes cumbersome and may not effectively deliver pacing pulses to all chambers
Solution Approach 1:
The patent combines the pulse generator and electrodes into a single integrated leadless pacemaker device. The housing contains the power supply and control circuitry while electrodes are positioned on the housing surface, eliminating the need for separate leads and pulse generator box. This merging simplifies the overall device structure and improves ease of operation by directly delivering pacing pulses from the integrated device to heart chambers.
Solution Approach 2:
The housing is divided into functional segments including power supply section, electrode sections, and sensing sections. The electrodes are segmented into multiple groups positioned at different locations on the housing, allowing selective activation for different pacing modes and chambers, thereby improving operational flexibility without requiring complex external lead systems.
2Reliability
If leadless pacing device is positioned within coronary sinus, then direct electrical stimulation across heart chambers is achieved, but navigation through vasculature becomes challenging
Solution Approach 1:
A guide wire is used as an intermediary tool to facilitate navigation of the leadless pacemaker through the vasculature to the coronary sinus. The guide wire provides a track along which the device can be advanced, making navigation easier and more reliable. The guide wire mediates between the operator's control and the device's positioning, solving the contradiction between reliable positioning and ease of navigation.
3Stability of the object's composition
If anchors are used for secure placement of leadless device, then device stability is improved, but device structure becomes more complex
Solution Approach 1:
The anchors are integrated directly into the housing structure as protrusions or features of the housing itself, rather than being separate components. This merging of anchoring features with the housing reduces overall device complexity while maintaining secure placement stability. The housing simultaneously serves as the structural body and the anchoring mechanism.
Data Source
AI summary
A leadless pacing device may include a power supply providing a power supply voltage, a housing having a first end, a second end, and a side extending between the first end and the second end, and a set of electrodes supported by the housing and in communication with the power supply. The housing may be angled to follow a contour of a patient's heart when the housing is positioned within the coronary sinus of the patient's heart. In some cases, an angled portion of the housing may include a smooth-curve. In some cases, an angled portion of the housing may include a first portion of the housing and a second portion of the housing at an angle of less than one-hundred-eighty degrees with respect to the first portion of the housing. One or more of the electrodes may be exposed on a concave side of the angled housing.