# K131538: Caplox II Pedicle Screw System/Towerlox Pedicle Screw System

- Pathway: 510(k) (Special)
- Applicant: Captiva Spine
- Decided: Aug 8, 2013 after 71 days
- Product code: MNH (Orthosis, Spondylolisthesis Spinal Fixation)
- Device class: 2
- Regulation: 21 CFR 888.3070
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 14 generations back to K853033 (1985). 207 ancestors in all.
6 later devices descend from it; 3 cite it directly.
0 of 214 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K122332: Towerlox Pedicle Screw System, Captiva Spine (2012) Summary page 2.
- K120292: Caplox II Pedicle Screw System, Captiva Spine, Inc. (2012) Summary page 2.
- K121020: Viper System, Depuy Spine, Inc. (2012) Summary page 2.

## Most influential descendants
- K151116: CapLOX II/TowerLOX Pedicle Screw System (2015), 3 descendants of its own
- K172105: The Plateau-LO Spacer System (2018), 1 descendant of its own
- K193270: CapLOX II®/TowerLOX® MIS Pedicle Screw System (2020), 0 descendants of its own
- K182470: Plateau Spacer System (2018), 0 descendants of its own
- K180475: CapLOX II® / TowerLOX® MIS Pedicle Screw System (2018), 0 descendants of its own

## Indications for use
The CapLOX ]I/TowerLOX Pedicle Screw System isa posterior, non-cervical pedicle fixation system intended to provide immobilization and stabilization of spinal segments in skeletally mature patients as an adjunct to fusion in the treatment of the following acute and chronic instabilities or deformities of the thoracic, lumbar and sacral spine including degenerative spondylolisthesis with objective evidence of neurologic impairment, fracture, dislocation, scoliosis, kyphosis, spinal tumor, pseudoarthrosis and failed previous fusion. In addition, when used as a pedicle screw fixation system, the CapLOX Il/TowerLOX Pedicle Screw System isintended for skeletally mature patients with severe spondylolisthesis (Grades 3 and 4) of the fifth lumbar-first sacral, LS-S1 vertebra, who are receiving fusion by autogenous bone graft only, who are having the device attached to the lumbar and sacral spine (levels may be from 13 to the sacruni/iliurn), who are having the device removed after the attainment of a solid fusion.

Source page: https://510kreport.com/device/K131538
Methodology: https://510kreport.com/methodology