Implantable Therapeutic Unit Data Transmission Timing
Solution Overview
Problem
Implantable medical devices like cardiac pacemakers face energy constraints due to limited battery power, limiting bidirectional data communication and requiring inefficient standby modes for data reception, which hampers efficient follow-up examinations by physicians.
Innovation Solution
A therapeutic system with an implantable medical device featuring a control unit that triggers data transmissions based on preselected events and maintains a short standby mode for reception, allowing for automatic data collection and transmission of follow-up examination data within preselected time windows, reducing energy consumption and ensuring up-to-date data during examinations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the implantable medical device maintains continuous standby mode for reception, then data communication reliability is improved, but energy consumption increases
Solution Approach 1:
The implantable medical device switches between active reception mode and low-power standby mode periodically. The device activates reception only during predetermined reception windows when data transmission is expected, and enters low-power mode during intervals between these windows. This periodic activation pattern maintains communication reliability while significantly reducing average energy consumption compared to continuous standby mode.
2Use of energy by moving object
If the implantable medical device uses short response windows for reception, then energy consumption is reduced, but data transmission completeness deteriorates
Solution Approach 1:
The external device transmits a synchronization signal or header information before the actual data payload during the reception window. The implantable medical device uses this preliminary signal to prepare its reception circuitry and synchronize its data buffer, ensuring that the subsequent data transmission is captured completely even within the constrained reception window timeframe.
3Use of energy by moving object
If data transmission is triggered only by specific events, then energy consumption is reduced, but timeliness of follow-up examination data deteriorates
Solution Approach 1:
The system dynamically adjusts its transmission trigger criteria based on the clinical context and timing. During periods when follow-up examinations are scheduled or anticipated, the device becomes more sensitive to transmission triggers, potentially using less stringent event criteria. During normal periods, it maintains stricter event-based triggering. This dynamic adjustment ensures timely data availability for scheduled examinations while minimizing unnecessary transmissions during stable periods.
Data Source
AI summary
Therapeutic system with implantable therapeutic unit (ITU) comprising control unit (CU), memory, telemetry unit connected (in)directly to CU for wireless bidirectional transmission of data to/from external device (ED) and detection unit for detecting physiological patient data or operational data. CU triggers outgoing data transmission (DT) from ITU to ED based on preselected internal events and establishes standby mode for reception on part of telemetry unit for receiving beginning (header) of incoming DT from ED to therapeutic unit exclusively within preselected response time window after DT from ITU to ED. System designed to add to incoming DT follow-up signaling data which signals an imminent follow-up examination, whereby CU also prompts sensor unit at preselected time point in response to receipt of follow-up signaling data to detect preselected physiological data required for follow-up examination or to detect operational data of therapeutic and store in memory and transmit with subsequent outgoing DT to ED.