# K173159: Cervical Spinal Truss System (CSTS) Interbody Fusion Device

- Pathway: 510(k) (Traditional)
- Applicant: 4Web, Inc.
- Decided: Jan 8, 2018 after 101 days
- Product code: ODP (Intervertebral Fusion Device With Bone Graft, Cervical)
- Device class: 2
- Regulation: 21 CFR 888.3080
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 22 generations back to K841189 (1984). 257 ancestors in all.
12 later devices descend from it; 4 cite it directly.
0 of 270 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K121741: 4-Web Cervical STS (Spinal Truss System), 4-Web, Inc. (2012) Summary page 5.
- K142112: 4WEB Spinal Implant Products, 4Web, Inc. (2014) Summary page 5.
- K171496: Tritanium C Anterior Cervical Cage, Stryker Spine (2017) Summary page 5.
- K111119: Trabecular Metal (TM) Fusion Device, Zimmer Spine, Inc. (2011) Summary page 5.

## Most influential descendants
- K190870: Cervical Spinal Truss System-Stand Alone (CSTS-SA) (2019), 10 descendants of its own
- K223362: Cervical Spine Truss System - Stand Alone (CSTS-SA) Interbody Fusion Device (2023), 3 descendants of its own
- K221266: Cervical Spine Truss System (CSTS) Interbody Fusion Device (2023), 3 descendants of its own
- K231739: Cervical Spine Truss System (CSTS) (2023), 2 descendants of its own
- K193153: SPIRA-C Integrated Fixation System (2020), 2 descendants of its own

## Indications for use
The Cervical Spine Truss System (CSTS) Interbody Fusion Device is indicated for use in skeletally mature patients with Degenerative Disc Disease (DDD) of the cervical spine at one level or two contiguous disc levels. DDD is defined as discogenic back pain with degeneration of the disc confirmed by patient history and radiographic studies. CSTS Interbody Fusion Devices are used as an adjunct to fusion in the cervical spine and are placed via an anterior approach at the C2 to T1 disc levels using autograft and/or allogenic bone graft comprised of cancellous and/or corticocancellous bone graft. Patients should have received 6 weeks of non-operative treatment prior to treatment with the devices. The device must be used with supplement fixation.

Source page: https://510kreport.com/device/K173159
Methodology: https://510kreport.com/methodology