Endoluminal Delivery Catheter with Position Sensor
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Solution Overview
Problem
Current endovascular interventional therapies face challenges in accurately guiding and positioning catheter-mounted endoluminal devices due to high radiation exposure, limitations of imaging modalities, and inaccuracies in sensor position displacement within body lumens.
Innovation Solution
The use of a delivery catheter equipped with an imaging sensor and a position sensor, along with an element having position codes readable by the position sensor, allows for precise guidance and placement of endoluminal devices within body lumens, eliminating the need for high-radiation imaging and general anesthesia.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If real-time X-ray angiographic imaging is used for guiding and positioning catheter-mounted endoluminal devices, then device placement guidance is provided, but high dosages of radiation exposure and contrast agents are delivered to the patient
Solution Approach 1:
The patent replaces the X-ray imaging system with an intravascular imaging system that uses ultrasound or optical coherence tomography sensors mounted on the catheter. This substitution eliminates the need for external radiation sources while providing internal imaging capability for precise device placement guidance.
Solution Approach 2:
The patent introduces an intravascular imaging sensor as an intermediary between the catheter and the target tissue. This sensor provides real-time imaging feedback without requiring external radiation, acting as a mediator that enables precise positioning while avoiding harmful radiation exposure.
2Object-affected harmful factors
If transesophageal echocardiogram is used for imaging guidance, then non-radiographic imaging is provided, but general anesthesia and endotracheal intubation are required
Solution Approach 1:
The patent makes the imaging system self-contained by mounting the intravascular imaging sensor directly on the catheter. This self-service approach eliminates the need for separate transesophageal echocardiogram equipment and anesthesia support, allowing the catheter itself to provide imaging guidance.
Solution Approach 2:
The catheter is designed with multi-functionality, serving both as a delivery mechanism for the endoluminal device and as an imaging platform. This universal design integrates therapeutic and diagnostic functions into a single device, eliminating the need for separate anesthesia and imaging equipment.
3Object-affected harmful factors
If intravascular ultrasound or optical coherence tomography sensors are used for imaging guidance, then non-radiographic imaging is provided, but motor position readings external to the patient are not accurately reflective of sensor position displacement within the body lumen
Solution Approach 1:
The patent adds a longitudinal position sensor that measures position along the length of the catheter shaft, complementing the radial imaging data. This additional dimensional measurement allows for precise three-dimensional localization of the imaging sensor within the body lumen, accounting for vessel elasticity and tortuosity.
Solution Approach 2:
The patent implements a feedback system where the longitudinal position sensor continuously monitors catheter position, and this information is used to adjust and refine the localization of the imaging sensor. The system uses real-time position feedback to compensate for vessel movement and ensure accurate sensor positioning.
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
This solution enables precise and accurate deployment of endoluminal devices, reducing radiation exposure and anesthesia requirements, while improving the accuracy of device placement and reducing procedural costs and time.
Implementation Method 1
The imaging sensor can be an intravascular ultrasound (IVUS) sensor or an optical coherence tomography (OCT) sensor
Implementation Method 2
The imaging sensor can be an intravascular ultrasound (IVUS) sensor or an optical coherence tomography (OCT) sensor
Implementation Method 3
The position sensor is configured to sense relative position to an element with a position code that is readable by the position sensor
Data Source
AI summary
Systems and methods for the placement of an endoluminal device are provided. A delivery system for endoluminal devices includes a delivery catheter comprising an imaging sensor and a position sensor. The position sensor is located at a known distance from the imaging sensor and configured to sense relative position to an element with a position code that is readable by the position sensor. The delivery catheter is configured for mounting an endoluminal device on the delivery catheter at a known distance from the imaging sensor or position sensor. The imaging sensor, the position sensor, or both the imaging sensor and the position sensor can be used for intravascular imaging of an anatomical location, guidance for deployment of the endoluminal device, confirmation of the placement of the endoluminal device at the anatomical location, or any combination thereof.