The ŌNŌ Transcatheter Retrieval System
Engineered To Remove What Doesn’t Belong.
One Device. Endless possibilities.
The ŌNŌ is an FDA 510(k)-cleared, catheter-based retrieval system designed to remove intravascular foreign objects without open surgery.
The Essential Tool For Every Advanced Interventional Catherization Lab
500+Total Cases Performed
36Peer-Reviewed Publications
60+Podium Presentations
Who We Are
ŌNŌCOR LLC is a medical device company founded by interventional cardiologists and cardiovascular surgeons. They developed the ŌNŌ Retrieval System — an FDA 510(k)-cleared, catheter-based device that removes foreign objects from the cardiovascular system without requiring open-heart surgery.
Removal of suboptimal devices and intravascular debris is increasingly necessary in modern cardiac catheterization and endovascular laboratories.
Enhance Your Ability To Avoid Open Surgery.
The ŌNŌ is purpose-built to facilitate safe, catheter-based retrieval across the expanding field of endovascular medicine.
What ŌNŌ Does
Envelop. Align. Compress. Remove.
The ŌNŌ Retrieval Device is an enabling technology designed to allow clinicians to plan beyond what was previously in reach. The ŌNŌ device is designed to envelop, align, compress and remove material from the vascular system. It is compatible with commercially available vascular sheaths, endovascular snares and other graspers.
- Envelop – ŌNŌ receives the foreign object and then uniquely protects native structures during retrieval (especially important for SS implants or balloon fragment extractions that cannot be compressed)
- Align – ŌNŌ aligns the foreign object with the axial lumen of the retrieval sheath as the object enters the basket (especially important for non-compressible objects such as leadless pacemakers or TEER clips)
- Compress – ŌNŌ compresses Nitinol implants and other objects to allow for percutaneous extraction – longitudinal pull force outside the body is translated into radial compression of foreign bodies inside the vasculature (especially important for septal or LAA occlusion devices)
- Remove – The ŌNŌ removes devices and tissue masses alike percutaneously increasing the likelihood of avoiding highly invasive surgical options
How it Works
Proof It Works
Clinical Use Cases
At a pace of almost one per month, ŌNŌ has accumulated a clinical record that is unprecedented for a product of its age — driven entirely by the physicians who use it. ŌNŌCOR did not author or fund these publications.
August 2025
Management of device embolisation during left atrial appendage closure
August 2025
Retrieval of an Embolized Left Atrial Appendage Occluder From the Aortic Arch Using a Transcatheter Retrieval Device
March 2023
The Simplified Extraction of Atrial Tumor With Targeted Loop Electricity (SEATTLE) Procedure
