Invented by Shachar; Josh, Rocklinger; Marc, Gang; Eli, Stelea; Sorin, Yin; Peter, Salceda; Elissa, Bourdages; Dylan
Catheters save lives. They help doctors find, diagnose, and treat heart rhythm problems and other diseases inside the body. But steering a catheter through moving, beating organs is tough. Now, a new invention changes everything. Let’s explore how this robotic mapping catheter works, why it matters, and what makes it unique.
Background and Market Context
Doctors use catheters every day in hospitals. These long, thin tubes go into blood vessels, the heart, and even kidneys. With special sensors, catheters pick up signals from inside the body. This helps doctors map out problem areas, fix irregular heartbeats, and deliver treatments exactly where needed.
But there’s a big problem: the body is always moving. Hearts beat and shift, lungs fill and empty, and patients can move on the operating table. This makes it hard to guide a catheter tip to the perfect spot. Even with skilled hands, it’s easy to miss a target location or lose track of where the tip is. Older systems use X-rays, which expose patients and staff to radiation. Others rely on complex manual controls or external imaging, but still can’t always keep up with the body’s motion.
Mapping the inside of organs is also slow and not always accurate. The goal is to find electrical signals that show where heart tissue is healthy and where it’s not. These signals can be tiny—sometimes just a few millionths of a volt. Background noise from hospital equipment can drown out the signals. Sometimes the wire inside the catheter acts like a long antenna, picking up static and electrical noise from the room, making the true signal even harder to find.
Doctors need a tool that can:
- Track the catheter’s tip in real-time, even as the body moves
- Pick up weak signals clearly, without noise
- Move smoothly and precisely to the right spot every time
- Map the inside of the heart or kidney quickly and safely
- Reduce radiation exposure and make procedures faster
- Allow robots to help, making movements repeatable and accurate
Current market leaders in mapping systems, like Carto and Ensite, have improved how doctors see inside the heart. But they still depend on manual catheter control and can’t fully adjust for all the moving parts inside the body. As heart disease and kidney problems affect more people worldwide, there’s a growing need for a smarter, safer, and more powerful mapping tool. A system that can sense, steer, and record with the help of robotics and smart electronics could change how doctors treat patients in the future.
Scientific Rationale and Prior Art
Understanding how catheters work today helps explain why a new approach is needed. Traditionally, catheters are advanced by hand. The doctor pushes, pulls, and twists the catheter from outside the body, hoping for good contact between the tip and the tissue inside. The tip carries electrodes that sense the tiny electrical signals that tell the story of how the heart is working.
But problems come up again and again:
- Manual control is imprecise, especially as organs move
- Signals are weak, and noise can overwhelm the useful data
- Long wires inside the catheter pick up interference from other hospital equipment
- Doctors can lose track of the exact spot where a signal was measured
- It’s hard to repeat the exact same movement if a spot needs to be treated again
Previous inventions have tried to fix these issues. Some added external sensors or used magnetic fields to track the catheter tip. Others combined X-ray images and computer modeling to create a map. Still, these systems struggle with tracking during heartbeats, breathing, or patient movement. They can’t always distinguish between real contact with tissue and when the catheter is just floating in blood. Some systems use filters to remove electrical noise, but these filters can also cut out important weak signals, losing precious data.
Some mapping catheters can only collect analog signals, which travel up a long wire to an external amplifier. Along the way, noise builds up, and the signal can get distorted. Imagine trying to listen to a whisper down a long hallway full of loud machines. Even the best analog systems can’t always keep the signal clear enough for detailed mapping.
Doctors have also developed “macros”—predefined sets of steps or movements for treating common problems like atrial fibrillation. But because the catheter tip can’t always be placed exactly where it’s needed, and because signals aren’t always clear, these macros can only go so far. The operator’s skill and guesswork play a big role, and mistakes or missed spots are possible.
Past patents cover a range of ideas: magnetic guidance, three-dimensional mapping, sensor fusion, and robotic control. But none combine all the pieces: real-time robotic movement, local signal digitization, noise rejection, impedance measurement (to check contact quality), and seamless communication with mapping software—all inside a flexible, user-friendly device. There’s a gap between what doctors need and what today’s tools deliver.
Invention Description and Key Innovations
This new invention brings together robotics, smart electronics, and advanced software to solve those old problems. Here’s how it works, in simple terms:
The heart of the system is a flexible catheter with a special tip. This tip holds multiple tiny electrodes. These electrodes sense the electrical signals from the tissue directly beneath them. But, instead of sending this weak analog signal up a long wire, the catheter tip includes a small amplifier and a microcontroller right where the signal starts. The amplifier makes the signal stronger, and then the microcontroller turns it into a digital code—like turning a whisper into a clear text message before sending it down the line.
Because the signal is digitized at the tip, it’s protected from noise as it travels. The microcontroller also formats the signal using a special communication protocol, so it’s ready to be sent to a mapping station or computer. Inside the catheter shaft, a flexible sheath holds the wires and a digital cable, letting the catheter move, bend, and twist easily without breaking the connection.
At the other end, a handle lets the doctor control the catheter manually. But here’s where the magic happens: a robot can grab this handle. The robot can pull, push, rotate, or bend the catheter tip, all guided by computer commands. These commands can come from the mapping station, where the doctor plans a path or even where software or artificial intelligence helps guide the movements. The robot can repeat actions exactly, over and over, making it easy to return to the same spot if needed.
Another key feature is impedance measurement. The handle includes a circuit that checks if the electrodes are really touching tissue or just floating in blood. This helps the doctor know when the catheter is in the right place and gives better, more reliable readings.
The entire signal chain is protected from outside electrical noise. Special isolators and smart circuit design keep unwanted signals out. The board inside the handle even has a “copper free zone” to help with electrical safety and signal clarity. The system works with existing mapping software, letting doctors see a real-time, three-dimensional map of the heart or kidney. The map updates quickly—up to 1000 times per second—which is much faster than older systems. This means doctors see a true, “live” picture of what’s happening inside the organ.
The invention is smart about tracking movement. It records the exact position of the catheter tip, even as the heart beats, the patient breathes, or the operating table shifts. The system uses fiducial sensors and smart math to correct for all this movement, so each measurement is accurate in three dimensions. When a problem area is found, the robot can move the catheter right back to that spot—no guessing or hunting needed.
The catheter is built to be safe and flexible. All the electronics fit inside a standard sheath size, so the device moves gently through blood vessels. The wires are thin but strong, and the design allows for easy bending and rotation without losing signal quality.
The method covers both manual and robotic operation. A doctor can guide the catheter by hand to key spots, record those locations, and then let the robot repeat the movements, following the same path or even running a treatment “macro” automatically. Artificial intelligence can help analyze the map and suggest paths or treatment steps, making procedures faster and more consistent.
One more big advance: the system is “closed loop.” It senses, maps, moves, and can even treat problem spots, all while updating the operator. The robot learns from each movement and can adjust as needed. The data is stored and can be sent to the cloud, letting doctors review cases, share information, or plan future treatments based on what was learned.
To sum up, the key innovations are:
- Local signal amplification and digitization at the catheter tip, protecting weak signals from noise
- Smart multiplexers to handle many sensors in a small space
- Real-time, high-resolution mapping with fast data transfer
- Precise robotic control of tip movement, rotation, and position
- Impedance measurement for reliable tissue contact
- Robust electrical isolation for safety and clarity
- Easy integration with existing mapping software and AI tools
- Full tracking of movement, correcting for heartbeats, breathing, and table shifts
- Repeatable, programmable motions for diagnosis and treatment macros
This system changes the landscape for heart and kidney procedures. It takes the guesswork and noise out of mapping, makes movements precise and repeatable, and opens the door to smarter, safer, and faster care for patients.
Conclusion
Catheter-based procedures are a cornerstone of modern medicine. But the challenges of weak signals, body movement, and manual control have long limited what doctors could do. This new robotic mapping catheter offers a big leap forward. By digitizing signals right at the source, using robots for precise movement, checking contact quality, and protecting against noise, it gives doctors a powerful new tool for mapping and treating disease inside the body.
With the ability to integrate with mapping software, use AI for analysis, and store detailed records for future care, this invention is more than just a device—it’s a platform for the next generation of patient treatment. The future of catheter navigation is here, and it’s smarter, safer, and more connected than ever before.
Click here https://ppubs.uspto.gov/pubwebapp/ and search 20250228486.