Spinal CSF Pressure-Wave Sensing for Cerebral Rupture Detection
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Solution Overview
Problem
Endovascular surgical procedures for treating cerebrovascular diseases, such as aneurysms and acute ischemic strokes, often result in life-threatening vascular ruptures that are difficult to detect due to insufficient training and chaotic procedural environments, necessitating a more effective detection method.
Innovation Solution
A sensor assembly with non-invasive probes along the spine measures pressure waves in cerebrospinal fluid to detect vascular ruptures, using ultrasound or optical Doppler transducers, and a processing device analyzes these signals to identify specific waveforms indicative of ruptures, outputting alarms for timely intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional monitoring devices (external ventricular drain, neurostimulating monitors) are used to detect vascular ruptures, then rupture detection capability is improved, but device complexity and obstruction of surgical view increase
Solution Approach 1:
The patent extracts the detection function from complex intracranial devices and relocates it to a simple external sensor assembly on the spine. The sensor assembly detects pressure waves in CSF that propagate from cerebral vascular ruptures, eliminating the need for complex intracranial catheters or metallic devices over the head that obscure the surgical view.
Solution Approach 2:
The patent uses cerebrospinal fluid as an intermediary medium to transmit pressure wave signals from the site of vascular rupture in the brain to sensors positioned on the spine. This intermediary approach allows indirect detection of intracranial events through easily accessible external sensors.
2Reliability
If more comprehensive training in endovascular surgery is required to reduce rupture events, then reliability of treatment is improved, but training time and resource requirements increase
Solution Approach 1:
The patent implements preliminary detection and warning capabilities that alert surgeons to vascular ruptures during procedures. This preliminary action allows for immediate intervention before catastrophic outcomes occur, compensating for potential inexperience or insufficient training in recognizing rare rupture events.
3Productivity
If endovascular procedures are performed more quickly to treat acute ischemic stroke, then productivity is improved, but detection precision of vascular ruptures worsens
Solution Approach 1:
The patent implements continuous monitoring of CSF pressure waves throughout the endovascular procedure. This continuous detection capability ensures that vascular ruptures are detected regardless of procedural speed, maintaining high measurement precision even when procedures are performed quickly to treat acute ischemic stroke.
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 rapid detection of vascular ruptures without obstructing surgical views, allowing quicker response and potentially saving lives by alerting surgeons to life-threatening events during endovascular procedures.
Implementation Method 1
A sensor assembly including a plurality of noninvasive probes or sensors is disposed along the patient's spine and is configured to measure the depth of the dura relative to the skin. Each sensor is configured to detect a pressure wave through CSF
Data Source
AI summary
A system for detecting a blood vessel rupture is disclosed. The system includes a sensor assembly including a plurality of sensors, each of which is configured to detect a pressure wave through CSF and to generate a pressure signal in response thereto. The system also includes a processing device coupled to the sensor assembly. The processing device configured to analyze the pressure signal to determine a blood vessel rupture.