# K141997: Crit-Line IV System

- Pathway: 510(k) (Traditional)
- Applicant: Fresenius Medical Care
- Decided: Apr 1, 2015 after 252 days
- Product code: KOC (Accessories, Blood Circuit, Hemodialysis)
- Device class: 2
- Regulation: 21 CFR 876.5820
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 2 generations back to K972470 (1997). 2 ancestors in all.
No later device cites it as a predicate yet.
0 of 3 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K121599: Crit-Line Clip (Clic), Fresenius Medical Care-North America (2012) Summary page 4.

## Indications for use
The Crit-Line IV System is used to non-invasively to measure hematocrit, oxygen saturation and percent change in blood volume. The Crit-Line Clip (CLiC) measures hematocrit, percent change in blood volume and oxygen saturation in real time for application in the treatment of dialysis patients with the intended purpose of providing a more effective treatment for both the dialysis patient and the dialysis technician. Based on the data that the monitor provides, the clinician/nurse, under physician direction, intervenes (i.e. increases or decreases the rate at which fluid is removed from the blood) in order to remove the maximum amount of fluid from the dialysis patient without the patient experiencing the common symptoms of dialysis which include nausea, cramping and vomiting.

Source page: https://510kreport.com/device/K141997
Methodology: https://510kreport.com/methodology