# K172448: Riptide Aspiration System

- Pathway: 510(k) (Traditional)
- Applicant: Micro Therapeutics, Inc. d/b/a ev3 Neurovascular
- Decided: Dec 21, 2017 after 129 days
- Product code: NRY (Catheter, Thrombus Retriever)
- Device class: 2
- Regulation: 21 CFR 870.1250
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 9 generations back to K003410 (2001). 13 ancestors in all.
3 later devices descend from it; 2 cite it directly.
0 of 17 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K160449: Penumbra System, Penumbra Pump MAX, Penumbra, Inc. (2016) Summary page 4.

## Most influential descendants
- K201689: Riptide Aspiration System (2020), 1 descendant of its own
- K243080: Riptide Aspiration System (2024), 0 descendants of its own
- K183185: Riptide Aspiration System (Riptide Large Bore Aspiration System) (2018), 0 descendants of its own

## Indications for use
The Riptide™ Aspiration System is intended for use in the revascularization of patients with acute ischemic stroke secondary to intracranial large vessel occlusive disease (within the internal carotid, middle cerebral – M1 and M2 segments, basilar, and vertebral arteries) within 8 hours of symptom onset. Patients who are ineligible for intravenous tissue plasminogen activator (IV t-PA) or who fail IV t-PA therapy are candidates for treatment.

Source page: https://510kreport.com/device/K172448
Methodology: https://510kreport.com/methodology