The Conformal LAA Seal (CLAAS) builds on the success of 1st generation devices with an implant designed to conform to each patient’s anatomy and reliably seal the LAA. Our technology is intended to be easy to deliver and to reduce the need for procedural TEE and general anesthesia.
The Next Generation of LAA Closure
Clinical Objectives
CLAAS: Next Generation Design
CLAAS is designed to conform to each patient’s unique anatomy and provide a consistent seal. Its foam matrix is intended to help ensure safe, atraumatic delivery, while its ePTFE cover provides a non-thrombogenic surface.

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Minimal imaging requirements and no general anesthesia
Learn more about Minimal imaging requirements and no general anesthesia -
Short landing zone and secure anchoring
Learn more about Short landing zone and secure anchoring -
Permits assessment in final position prior to release
Learn more about Permits assessment in final position prior to release -
Atraumatic delivery presentation
Learn more about Atraumatic delivery presentation -
Non-thombogenic LA surface
Learn more about Non-thombogenic LA surface -
Consistent seal
Learn more about Consistent seal
- 2 sizes to choose from
- Seals even when positioned off axis
- Facilitates ICE evaluation prior to release without TEE
- Short 10mm landing zone
- Fits most LAA anatomies
- 20 anchors in 2 rows
- Tension free-delivery system
- Foam matrix leading edge provides atraumatic bumper during delivery
- No attachment screw
- ePTFE cover
- Foam matrix with compliant endoskeleton conforms to patient’s anatomy

Minimal imaging requirements and no general anesthesia
- 2 sizes to choose from
- Seals even when positioned off axis
- Facilitates ICE evaluation prior to release without TEE
Short landing zone and secure anchoring
- Short 10mm landing zone
- Fits most LAA anatomies
- 20 anchors in 2 rows
Permits assessment in final position prior to release
- Tension free-delivery system
Atraumatic delivery presentation
- Foam matrix leading edge provides atraumatic bumper during delivery
Non-thombogenic LA surface
- No attachment screw
- ePTFE cover
Consistent seal
- Foam matrix with compliant endoskeleton conforms to patient’s anatomy