Resilient Cuff Sensor Deployment on Cardiac Leads
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Solution Overview
Problem
Current implantable medical devices lack effective methods for deploying sensors within the heart or vasculature to accurately monitor physiological parameters, which limits their ability to adjust therapy in real-time based on continuous sensor data.
Innovation Solution
A medical electrical lead system with a resilient cuff and sensor assembly deployment system, allowing for the deployment of sensors onto the lead body within the heart or vasculature, enabling the detection of physiological parameters and communication of data to the pulse generator or external devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sensor is implanted within the heart or vasculature to monitor physiological parameters, then real-time monitoring capability is improved, but device complexity and deployment difficulty increase
Solution Approach 1:
The patent combines the sensor assembly with the lead body into a single integrated unit. The sensor is coupled to the lead body such that the sensor assembly can be delivered through the lead's delivery system, eliminating the need for separate sensor implantation procedures and reducing overall system complexity despite adding monitoring capability.
Solution Approach 2:
The sensor assembly is nested within the lead body structure. The sensor is positioned within a chamber formed by the lead body, allowing the sensor to be protected and positioned within the existing lead architecture. This nesting approach enables the sensor to be delivered through the lead's catheter system without requiring separate delivery infrastructure.
2Measurement precision
If a sensor assembly is deployed onto the lead body, then physiological parameter detection is improved, but manufacturing and assembly complexity increase
Solution Approach 1:
The sensor assembly is pre-assembled and pre-positioned on the lead body during manufacturing. The sensor is coupled to the lead body in a controlled manufacturing environment, allowing for precise positioning and secure attachment before deployment. This preliminary assembly simplifies the clinical deployment process while maintaining measurement precision.
Solution Approach 2:
The sensor assembly is designed to be self-contained with all necessary components (sensor element, housing, electrical connections) integrated into a single unit that can be delivered and deployed as one assembly. This self-service design eliminates the need for complex surgical assembly procedures while ensuring precise sensor positioning for accurate physiological parameter detection.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables precise monitoring and adjustment of therapy parameters, improving the treatment of heart conditions by providing continuous, real-time data on physiological parameters such as blood pressure and cardiac activity.
Implementation Method 1
a resilient cuff frictionally engaged on an outer surface of the lead body
Data Source
AI summary
Systems and methods for deploying a sensor assembly onto a cardiac lead are disclosed. The sensor assembly can include a resilient cuff having one or more sensor modules for sensing physiological parameters within the body. The resilient cuff may have a substantially cylindrical shape having an inner diameter that is smaller than an outer diameter of the lead body onto which the cuff is deployed such that the cuff is retained on the lead body by frictional forces. The sensor assembly may be deployed in conjunction with a new lead to be implanted within a chamber of the patient's heart or a body vessel, or may be deployed onto an existing, implanted lead implanted within the patient's body.