# K971893: SNT Linac Accessories

- Pathway: 510(k) (Traditional)
- Applicant: Surgical Navigation Technologies, Inc.
- Decided: Nov 13, 1997 after 175 days
- Product code: IYE (Accelerator, Linear, Medical)
- Device class: 2
- Regulation: 21 CFR 892.5050
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
5 later devices descend from it; 2 cite it directly.
0 of 6 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- None. The FDA summary names no predicate by number.

## Most influential descendants
- K071360: Optical Guidance Platform (2007), 2 descendants of its own
- K142560: Varian Head Frame (2014), 1 descendant of its own
- K123788: Integrated Collimator Verification and Interlock System (Icvi) (2013), 1 descendant of its own
- K180586: Varian Head Frame (2018), 0 descendants of its own
- K161984: Interlocked Circular Small Field Collimators, Elekta Integrated (2016), 0 descendants of its own

## Indications for use
The SNT Linac Accessories are indicated for use with a Linear Accelerator to perform Stereotactic Radiosurgery or Radiotherapy on cranial lesions. The accessories include a secondary collimation system, components to mount a patient in a stereotactic headring to a linear accelerator's treatment couch, and components to position the patient relative to the isocenter of a linear accelerator in conjuction with a laser alignment system.

Source page: https://510kreport.com/device/K971893
Methodology: https://510kreport.com/methodology