Sensor-Equipped Catheter Positioning via Electromagnetic Fields
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current medical technologies face challenges in precisely positioning and orienting catheters within the body for procedures such as vessel mapping and implantation of devices like stents, due to limitations in real-time anatomical guidance and sensor accuracy.
Innovation Solution
The development of sensor-equipped catheters that utilize electromagnetic fields and sensors to create 'sensing fields' within the body, allowing for precise three-dimensional positioning and rotational orientation using computer-controlled magnetic fields and sensors, enabling accurate placement of catheters and devices during medical procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional catheter positioning methods are used, then the procedure can be performed with simpler equipment, but the positioning precision and orientation accuracy are insufficient
Solution Approach 1:
The patent replaces traditional mechanical positioning methods with electromagnetic field-based sensing. Sensors on the catheter detect electromagnetic fields generated by external sources to determine three-dimensional position and rotational orientation, achieving high precision without complex mechanical guidance structures
Solution Approach 2:
The patent introduces electromagnetic fields as an intermediary medium between the catheter and the positioning system. External electromagnetic field generators create sensing fields that penetrate tissue, allowing wireless, non-invasive detection of catheter position and orientation through sensor signals
2Manufacturing precision
If real-time anatomical mapping is implemented, then the procedural accuracy is improved, but the time required for setup and data acquisition increases
Solution Approach 1:
The patent performs anatomical mapping by acquiring electromagnetic field signals and generating three-dimensional maps before catheter intervention. This preliminary characterization of anatomical structures allows for precise navigation and placement decisions to be made during the procedure based on pre-established spatial relationships
Solution Approach 2:
The patent implements continuous feedback by monitoring sensor signals from the catheter in real-time and comparing them against the pre-acquired anatomical map. This allows dynamic adjustment of catheter position and orientation to achieve precise target placement while providing immediate verification of correct 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
Enables precise and accurate placement of catheters and devices within the body, enhancing the success rate of procedures like coronary artery bypass and stent implantation by providing real-time anatomical mapping and orientation data.
Implementation Method 1
one or more energy-field-creating apparatus (e.g., magnet(s), ultrasound generator(s), light source(s), radiofrequency generator(s), x-ray machine(s), infrared source(s), microcurrent source(s), etc.) are used to create electromagnetic fields or other energy field (i.e. 'Sensing fields') around and/or within the patient's body. A sensor-monitoring and indicia-providing means (e.g., a computer controller and monitor) is then used to receive signals from the sensor(s) and to provide, on the basis of those signals, indicia of the position and/or rotational orientation of each sensor within the sensing field.
Data Source
AI summary
Electro-anatomically navigated catheters (e.g., mapping catheters, tissue penetrating catheters, delivery catheters and/or sheaths) and associated methods whereby devices or substances may be delivered to specific locations within a patient's body and/or penetration tracts or passageways are formed at specific locations between anatomical structures. The catheters are equipped with sensors and a sensing field is created around the body of the patient. The sensor-equipped catheters are then inserted into the patient's body and the position of the catheter-mounted sensor(s) is/are observed on a display representing the sensing field. Apparatus may be included for propelling the catheter(s) to specific locations and/or specific rotation orientations, within the patient's body.