INT Medical Left Atrial Appendage Occlusion

Atrial fibrillation raises the risk of stroke because blood pools and clots in the left atrial appendage. Anticoagulation is the standard answer, and it works well for most patients. Some patients cannot take it. Bleeding history, falls risk, or a stroke occurring despite treatment all leave clinicians looking for another route. Closing the appendage mechanically is that route.

The procedure is percutaneous. A catheter crosses from the right atrium to the left through the septum, and the occluder is deployed inside the appendage. Once the device is in place and endothelialised, the appendage no longer communicates with the atrium, and the commonest source of clot is removed. Patients can then usually come off long-term anticoagulation, which is the whole point.

Sizing dominates the procedure. The appendage is measured beforehand on transoesophageal echocardiography or CT, and the device is chosen to compress within a defined range at the landing zone. Under-compression risks the device shifting or embolising. Over-compression risks tissue erosion and paradoxically less secure anchoring. That is why a range with 2 mm size increments has practical value, since finer steps make it easier to land inside the window. Appendage shape complicates matters further, as a substantial proportion are divided into more than one lobe, and a device that anchors in one lobe still has to cover the whole ostium. Peri-device leak and device-related thrombus are the two problems watched for afterwards, and both are assessed by imaging at follow-up.

Medigear.uk will supply the instructions for use once the manufacturer documentation is complete.

Eleven Single-Chamber Sizes in 2 mm Steps

Finer increments make it easier to land within the compression window that sizing depends on, where coarser ranges force a compromise between two sizes.

Dedicated Dual-Chamber Configurations

Six references pair a small anchor with a much larger cover, which is the recognised approach for appendages divided into multiple lobes.

Wide Overall Size Span

Anchor discs from 16 to 36 mm cover a broad range of appendage anatomy from one product family.

Two-Part Anchor and Seal Architecture

Separating fixation from sealing allows the device to grip inside the appendage while covering an ostium of different dimensions.

Height Scaled to Device Size

Heights of 9, 10 and 12 mm rise with the device, which matters where implant depth within the appendage is limited.

Delivery Sheath Options at Smaller Sizes

The smaller devices are compatible with 9F, 10F or 12F systems rather than a single fixed size.

Consistent Reference Coding

Anchor and seal dimensions are both encoded in each reference, which makes the codes readable, subject to the one discrepancy noted above.

Single Point of Contact Through Medigear.uk

Medigear.uk will pursue the materials, delivery codes, sizing guidance, clinical evidence and regulatory file required before an implant of this class can be offered.

Anchor Disc

The inner element that fixes the device within the appendage.

Seal Disc

The outer element that covers the appendage mouth.

16 mm to 36 mm Single-Chamber Anchors

Eleven sizes spanning the range in 2 mm increments.

16 mm to 26 mm Dual-Chamber Anchors

Six sizes for appendages with more than one lobe.

5 mm Anchor to Seal Step, Single Chamber

Seal discs run 5 mm larger than their anchor across the single-chamber family.

13 mm Anchor to Seal Step, Dual Chamber

Seal discs run 13 mm larger, giving wide ostial coverage from a small anchor.

9 mm Height References

The shortest profile, on the four smallest single-chamber sizes.

10 mm Height References

The mid profile, across both families.

12 mm Height References

The tallest profile, on the largest devices in each family.

9F Delivery Compatibility

Available on the smallest devices in both families.

10F Delivery Compatibility

Available across the mid-range sizes.

12F Delivery Compatibility

Required for the largest single-chamber devices.

The INT Medical Left Atrial Appendage Occlusion System covers seventeen sizes across two families, and the structure is sensible. Eleven single-chamber sizes in 2 mm increments offer finer granularity than several established devices, which matters because sizing has to fit within a narrow compression window—six dual-chamber references pairing a small anchor with a much larger cover address multi-lobed anatomy directly. By contrast, this is a permanent cardiac implant, and the sheet provides very little. The brand name is cut off, no materials are named, no delivery system codes appear, no sizing guidance is given, and no clinical or regulatory information exists. One reference code also contradicts its own dimensions. Medigear.uk will obtain the complete technical, clinical and regulatory file before offering this range.