Aspiration Catheter — Large Bore Thrombectomy | 6.5 Fr Lumen, −850 mmHg Rated, Soft Atraumatic Tip
Aspiration Catheter — Large Bore Thrombectomy | 6.5 Fr Lumen, −850 mmHg Rated, Soft Atraumatic Tip
Solving the Wall Thinness vs. Vacuum Collapse Design Tension in Thrombectomy Catheters
Mechanical thrombectomy success rates are directly tied to the aspiration catheter’s ability to maintain maximum inner lumen area while tracking to the thrombus site without accordion-folding under pump negative pressure — a design tension between wall thinness, column support, and aspiration vacuum tolerance that most catheter shaft constructions cannot simultaneously satisfy.
M4D LLC’s large-bore aspiration catheter addresses this engineering conflict through a braided shaft architecture combining a high-density PE inner liner (0.088 in. ID, 6.5 Fr lumen, hydrophilic-coated inner surface) with a 16-wire 1-over-1 stainless steel braid (0.0015 in. round wire, 45° braid angle) that provides column support against pump vacuum collapse without sacrificing the thin wall (<0.010 in. total) required for maximum lumen-to-OD ratio.
The soft atraumatic distal tip is constructed from Pebax 25D over a platinum full-ring marker band (UV adhesive-locked, 365 nm cure), blending into the Pebax 55D mid-shaft and Pebax 72D proximal shaft via sequential reflow bonding. Pump aspiration compatibility is rated at −850 mmHg continuous for 15 minutes without shaft collapse, verified by bench test per M4D protocol ATP-003.
Performance Sheet
| Parameter | Value |
|---|---|
| Inner Liner | High-density PE, 0.088 in. ID (6.5 Fr), hydrophilic-coated inner surface |
| Braid | 16-wire, 1-over-1, 304 SS, 0.0015 in. round wire, 45° angle |
| Wall Thickness | <0.010 in. total wall |
| Outer Jacket Zones | Pebax 72D (proximal) / 55D (mid) / 25D (distal) |
| Distal Tip | Pebax 25D, atraumatic, over full-ring Pt marker band |
| Aspiration Rating | −850 mmHg continuous, 15 min, per ATP-003 |
| Marker Band | Pt full-ring, UV-locked 365 nm |
| Reflow Bond | Sequential zone reflow, IR-controlled |
| EtO Compatibility | Yes |
| Regulatory | ISO 13485:2016, FDA Registered, QCBD QMS |
M4D LLC manufactures large-bore aspiration catheters for mechanical thrombectomy applications, including stroke and peripheral arterial occlusion indications. Designed for continuous pump aspiration and tortuous vessel tracking. ISO 13485:2016 certified, FDA registered.