# K141876: Pasture F550S Surgical N95 Respirator, Pasture F550CS Surgical N95 Respirator, Pasture A520S Surgical N95 Respirator, Pasture A520CS Surgical N95 Respirator, Pasture E520S Surgical N95 Respirator, Pasture E520CS Surgical N95 Respirator

- Pathway: 510(k) (Traditional)
- Applicant: Pasture Pharma Pte, Ltd.
- Decided: Oct 28, 2015 after 474 days
- Product code: MSH (Respirator, Surgical)
- Device class: 2
- Regulation: 21 CFR 878.4040
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 5 generations back to K922507 (1992). 5 ancestors in all.
No later device cites it as a predicate yet.
0 of 6 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K070139: Willson One-Fit Healthcare Particle Respirator and Surgical Mask, HC-NB095, Survivair, Inc. (2007) Summary page 5.

## Indications for use
Pasture F550S, Pasture F550CS, Pasture A520S, Pasture A520CS, Pasture E520S, and Pasture E520CS is a NIOSH certified N95 respirator, and is indicated to be used by the healthcare personnel during procedures to protect both the patient and the healthcare personnel from the transfer of microorganisms, body fluids, and particulate material.

Source page: https://510kreport.com/device/K141876
Methodology: https://510kreport.com/methodology