# K912630: Xknife Radiosurgery System

- Pathway: 510(k) (Traditional)
- Applicant: Rsa, Inc.
- Decided: Nov 4, 1991 after 140 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; 5 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. FDA lists a 510(k) statement for it but has not posted the file, so its predicates are not known.

## Most influential descendants
- K100096: Linac Collimator Assembly Housing (Lcah) Model Lcahart (2010), 0 descendants of its own
- K072454: Integra Radionics Interfix Patient Adapters (2007), 0 descendants of its own
- K043409: Accuchanger (2005), 0 descendants of its own
- K963860: The Nomos Talon Positioning and Immobilization System (1996), 0 descendants of its own
- K961484: Cass System (Modification) (1996), 0 descendants of its own

Source page: https://510kreport.com/device/K912630
Methodology: https://510kreport.com/methodology