Location-Guided Biostimulator Delivery for Left Bundle Branch Pacing

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Solution Overview

Problem

Delivering a leadless cardiac pacemaker to the left bundle branch area (LBBAP) pacing site is challenging due to limited space and anatomical structures, requiring multiple attempts and potential interference with heart structures, which affects positioning and battery life.

Innovation Solution

A biostimulator transport system with location guides that deploy radially outward to engage anatomical landmarks, allowing precise delivery and deep septal wall penetration for optimal pacing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If a leadless cardiac pacemaker is delivered to the LBBAP pacing site through limited space in the right ventricle, then the pacemaker can engage the septal wall for deep pacing, but the device may interfere with heart structures and require multiple attempts for successful placement

Engineering Contradiction:

Improvepositioning precisionVSAvoidplacement success rate

Core Design Contradiction:

Manufacturing precisionVSReliability

Solution Approach 1:

A delivery catheter serves as an intermediary device that guides the leadless pacemaker through the right ventricle to the septal wall. The catheter provides a controlled pathway and positioning mechanism, enabling precise delivery to the target LBBAP site while avoiding interference with other heart structures during the implantation process

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The delivery catheter is pre-positioned and navigated to the target site before the pacemaker is released. This preliminary positioning action ensures that the pacemaker is delivered to the correct location on the septal wall in a single attempt, eliminating the need for multiple retrieval and re-implantation cycles

Inventive Principle:

Principle #10Preliminary action

2Reliability

If the leadless pacemaker is placed deep into the septal wall for optimal LBBAP pacing, then conduction system capture is improved, but the device requires precise angular engagement that is difficult to achieve in limited space

Engineering Contradiction:

Improveconduction system captureVSAvoiddelivery difficulty

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The delivery catheter incorporates dynamic positioning capabilities that allow it to be oriented at the optimal angle relative to the septal wall during delivery. This dynamic adjustment enables the pacemaker to engage deeply into the septal wall at the correct angle for LBBAP pacing, achieving reliable conduction system capture while simplifying the delivery process

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The delivery system utilizes the third dimension (angular orientation) to achieve proper positioning. By controlling the catheter's angle of approach in addition to its longitudinal position, the system can engage the septal wall at the optimal angle for deep pacing, transforming a two-dimensional positioning problem into a three-dimensional solution

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentEP4656233A1Biostimulator transport system having location guides

Publication Date: 2025.12.03 PACESETTER INC

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AI summary

A biostimulator transport system (121) includes a biostimulator coupling (122) along a central axis (112), and one or more location guides (150). The location guides (150) are deployable radially outward from the central axis (112). When deployed, the location guides (150) engage anatomical landmarks (152). Other embodiments are also described and claimed.