# K091141: Therafirm Anti-Embolism Stockings, Therafirm Men's and Women's Trouser Socks

- Pathway: 510(k) (Traditional)
- Applicant: Knit-Rite, Inc.
- Decided: Jul 24, 2009 after 95 days
- Product code: DWL (Stocking, Medical Support (To Prevent Pooling Of Blood In Legs))
- Device class: 2
- Regulation: 21 CFR 880.5780
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 3 generations back to K955138 (1995). 4 ancestors in all.
4 later devices descend from it; 3 cite it directly.
0 of 9 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K032325: Jobst Travel Socks, Bsn-Jobst, Inc. (2003) Summary page 1.
- K040353: Flight Sock, Ssl Americas, Inc. (2004) Summary page 1.

## Most influential descendants
- K101906: Shape to Fit Compression Wear (2010), 1 descendant of its own
- K090921: Anti-Embolism Stockings, Models 71055-00000-02, 71057-00000-02, 71059-00000-02, 71064-00000-02 & 71065-00000-02 (2009), 1 descendant of its own
- K123085: Futuro (TM) Travel Knee-Highs; Futuro (TM) Travel Socks; Futuro (TM) Travel Stockings; Futuro (TM) Travel Pantyhose (2012), 0 descendants of its own
- K101224: Saphenamedical Anti-Embolism Stockings (2010), 0 descendants of its own

## Indications for use
Help prevent edema and leg discomfort, and help prevent deep vein thrombosis in individuals subjected to immobility.

Source page: https://510kreport.com/device/K091141
Methodology: https://510kreport.com/methodology