Rotatable Implantable Device Body for Leadlet Extension Adjustment
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Solution Overview
Problem
Existing implantable medical devices face challenges in efficiently positioning and deploying electrodes within the heart for pacing and sensing, particularly in altering the extension length of leadlets to accommodate different anatomical configurations.
Innovation Solution
An implantable medical device (IMD) with a leadlet that extends over a defined extension length, where the device body includes a proximal body portion that can rotate relative to a distal body portion, allowing for alteration of the leadlet's extension length to position the electrode effectively within the heart.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the leadlet extension length is fixed, then the device structure is simpler, but the device cannot accommodate different anatomical configurations
Solution Approach 1:
The device incorporates a rotatable proximal body portion that enables dynamic adjustment of the leadlet extension length. This rotational mechanism transforms a static structure into a dynamic one, allowing the leadlet to extend to different lengths based on anatomical requirements while maintaining a relatively simple overall device structure.
Solution Approach 2:
The device body is segmented into a proximal body portion and a distal body portion, with the proximal portion capable of rotation relative to the distal portion. This segmentation allows independent movement of the proximal section to alter leadlet extension without affecting the entire device structure, thus improving adaptability while controlling complexity.
2Manufacturing precision
If the leadlet extension length is altered, then the electrode positioning precision is improved, but the mechanism complexity increases
Solution Approach 1:
The rotatable proximal body portion provides a dynamic mechanism for adjusting leadlet extension length, enabling precise electrode positioning. The rotation capability allows continuous adjustment rather than discrete steps, enhancing positioning precision while using a relatively simple rotational joint instead of complex actuation systems.
Data Source
AI summary
An implantable medical device configured to deliver pacing therapy, the implantable medical device including a device body configured to position within a heart, where the device body comprises a proximal body portion and a distal body portion and defines a longitudinal axis extending through the proximal body portion and the distal body portion, the proximal body portion is configured to rotate around the longitudinal axis relative to distal body portion, and a leadlet mechanically coupled to the device body, where the leadlet mechanically supports an electrode configured to deliver pacing therapy, and where in response to the proximal body portion rotating relative to the distal body portion, the device body is configured to alter an extension length of the leadlet.