Integrated Hemodynamic Sensing Device for Accurate Blood Pressure Monitoring
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Solution Overview
Problem
Current direct blood pressure monitoring systems require multiple invasive procedures and separate support structures for hemodynamic pressure transducers, which can lead to inaccuracies due to siphonic pressure differences and increased complexity in emergency situations.
Innovation Solution
An integrated hemodynamic sensing device with a precordial mounting substrate and multiple pressure transducers connected via a single lumen and electrical interface, allowing for self-leveling and reduced invasive procedures, along with a modular design for flexible assembly and wireless connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple separate pressure transducers are used for hemodynamic monitoring, then measurement precision is improved, but device complexity increases and invasive procedures are increased
Solution Approach 1:
The patent combines multiple pressure transducers (arterial, central venous, pulmonary artery) into a single integrated catheter assembly with a common hub. This merging allows multiple hemodynamic parameters to be monitored simultaneously through one insertion site, reducing procedural complexity while maintaining measurement precision across all channels.
Solution Approach 2:
The integrated catheter hub serves multiple functions: it houses all transducer connections, provides a common reference pressure port for leveling, enables simultaneous multi-parameter monitoring, and simplifies fluid column management. This multi-functional design reduces the number of separate devices needed while maintaining comprehensive monitoring capabilities.
2Measurement precision
If separate support structures are used for pressure transducers, then measurement accuracy is improved through proper positioning, but device complexity and patient discomfort increase
Solution Approach 1:
The patent integrates the leveling reference function directly into the catheter hub structure itself, eliminating the need for separate support structures or external leveling devices. The hub contains an internal reference port that provides the correct zero-reference level for all transducers, ensuring measurement accuracy while simplifying the overall system.
Solution Approach 2:
The integrated hub acts as an intermediary structure that houses all transducer connections and provides a common reference pressure port. This central hub mediates between the transducers and the patient's circulatory system, ensuring proper positioning and leveling without requiring external support structures.
3Reliability
If multiple lumens are used to provide fluid to multiple transducers, then measurement reliability is improved, but device complexity and invasive procedures increase
Solution Approach 1:
The patent combines multiple fluid delivery functions into a single integrated lumen system that branches within the hub to supply all transducers. This unified lumen configuration maintains reliable fluid columns for arterial, central venous, and pulmonary artery monitoring while reducing the number of separate catheter insertions and simplifying fluid management.
Solution Approach 2:
The patent employs a nested lumen structure where multiple fluid pathways are contained within a single catheter assembly. The lumens are arranged concentrically or in bundled fashion, with each lumen serving a specific transducer while all are managed through a common hub interface, reducing external complexity while maintaining internal functionality.
Data Source
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AI summary
An integrated pressure sensing device is disclosed. Embodiments of the disclosed concepts provide a device that integrates hemodynamic pressure transducers or sensors into a single package. The package can be designed for precordial placement on the subject so that pressure readings are substantially accurate and appropriately calibrated without "leveling" the sensors relative to a subject's heart using a separate support, and regardless of the subject's position. A lumen set can be configured to maintain a fluid column between each pressure transducer and the subject' s blood stream and in some embodiments, the assembly, including all transducers, can be fed from a single fluid source such as a single IV bag.