Leadless Cardiac Device with Expandable Anchoring Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There is a need for alternative medical devices and delivery systems for cardiac pacing that do not rely on traditional leads, offering improved anchoring and deployment methods within the vasculature near the heart, particularly for pacing and sensing electrical activity in cardiac chambers.
Innovation Solution
A leadless cardiac device with an elongated housing containing a power source, circuitry, electrodes, and an expandable anchoring mechanism, which can be deployed in the vasculature near the heart, featuring a distal extension and an anchoring mechanism comprising interwoven filaments or wires to secure the device in place, allowing for pacing and sensing functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional leads are used for cardiac pacing, then reliable electrical connection is achieved, but device complexity and surgical invasiveness increase
Solution Approach 1:
The patent extracts and eliminates the traditional lead component from the pacing system. The leadless pacemaker contains all necessary electrical connection elements within the compact housing, with electrodes directly integrated into the housing structure rather than requiring separate leads to connect the pulse generator to the heart tissue.
Solution Approach 2:
The patent merges multiple functions into a single integrated device. The housing simultaneously serves as the pulse generator containment structure, the electrode support, and the anchoring mechanism base. The electrodes are directly formed on or integrated into the housing, eliminating the need for separate lead wires.
2Reliability
If leadless cardiac device is deployed in vasculature, then anchoring security is improved, but delivery and deployment complexity increases
Solution Approach 1:
The anchoring mechanism transitions from a compressed low-profile state during delivery to an expanded anchored state at the implantation site. The expandable anchoring structure allows the device to dynamically change its configuration to achieve secure anchoring after delivery, with the anchoring elements expanding outward to engage with the vascular wall.
Solution Approach 2:
The expandable anchoring structure serves as an intermediary between the leadless pacemaker and the vascular wall. This anchoring mechanism mediates the connection by providing a stable interface that secures the device to the vessel wall through controlled expansion, facilitating reliable positioning without direct complex interaction between the pacemaker housing and vascular tissue.
3Stability of the object's composition
If expandable anchoring mechanism is used, then device stability in vasculature is improved, but device size for delivery increases
Solution Approach 1:
The expandable anchoring mechanism enables the device to transition between two distinct size states: a compressed low-profile configuration for delivery through catheters, and an expanded configuration for stable anchoring at the implantation site. This dynamic size transformation allows the device to overcome the contradiction between small delivery profile and large anchored stability.
Data Source
Figure 1
Figure 2A
Figure 2B
AI summary
A leadless pacing device is disclosed including a housing having a proximal end and a distal end, and a set of one or more electrodes supported by the housing. The housing includes a first distal extension extending distally from the distal end thereof. One or more electrodes are supported by the distal extension. The leadless pacing device is releasably coupled to an expandable anchor mechanism.