510(k) · Cleared
ClearedLegacy
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Phasor Health, LLC · HBG Drills, Burrs, Trephines & Accessories (Manual)
Cleared on Nov 21, 2025 as substantially equivalent to K961113 (Clinical Neuro Systems, LLC, 1996) and 1 other predicate after an 86-day review. Its family tree reaches back 7 generations to 1993.
- Decided
- Nov 21, 2025
- Review
- 86 days
- Class
- Class II
- Product code
- HBG
- Recalls
- None
- Predicates
- 2
Its longest line of descent runs back 7 generations to K931783 (1993). 16 ancestors in all. No later device cites it as a predicate yet.
- Root · 7 generations backK931783 Aesop (Automated Endoscopic System for Optimal PosComputer Motion, Inc. · 1993
- 6 generations backK960655 Aesop System and AccessoriesComputer Motion, Inc. · 1996
- 5 generations backK973700 Hermes Operating Room Control CenterComputer Motion, Inc. · 1998
- 4 generations backK980787 Hermes Operating Room Control Center with the Wom 20L InsufflatorComputer Motion, Inc. · 1998
- 3 generations backK991696 Stryker Hermes-Ready Total Performance SystemStryker Instruments · 1999
- 2 generations backK014060 Microaire 1000E SystemMicroaire Surgical Instruments, Inc. · 2002
- 1 generation backK161704 Phasor DrillBiotex, Inc. · 2016 · Recalled
- This deviceK252696 LegacyPhasor Health, LLC · 2025
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −7 | K931783 | Aesop (Automated Endoscopic System for Optimal Pos | Computer Motion, Inc. | 1993 | — |
| −6 | K960655 | Aesop System and Accessories | Computer Motion, Inc. | 1996 | — |
| −5 | K973700 | Hermes Operating Room Control Center | Computer Motion, Inc. | 1998 | — |
| −4 | K980787 | Hermes Operating Room Control Center with the Wom 20L Insufflator | Computer Motion, Inc. | 1998 | — |
| −3 | K991696 | Stryker Hermes-Ready Total Performance System | Stryker Instruments | 1999 | — |
| −2 | K014060 | Microaire 1000E System | Microaire Surgical Instruments, Inc. | 2002 | — |
| −1 | K161704 | Phasor Drill | Biotex, Inc. | 2016 | 1 |
| 0 (this device) | K252696 | Legacy | Phasor Health, LLC | 2025 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1994 | 4 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1998 | 1 | 0 |
Sources: FDA 510(k) database (decision fields), the FDA summary (predicates and indications), FDA recall and enforcement reports, and MAUDE; processed by 510(k) Report. Verify on FDA.gov · Methodology and accuracy.
Planning a device in HBG? A 510(k) Report weighs predicate choices, recall history and review times for a new device like this one.
- Candidate predicates for a device like this, rankedin the report
- Recall history across each candidate’s familyin the report
What was it cleared against? (2)
Devices the submitter claimed this one is substantially equivalent to (*), and reference devices cited for a specific test or feature (†), as written in the FDA summary.
| Type | Number | Device | Decided |
|---|---|---|---|
| * | K961113 | CNS Interchangeable Bit Cranial DrillSummary page 5…respectively Predicate Device Premarket Notification # (1) K961113; (2) K161704; respectively (1) 21 CFR 882.43… | 1996 |
| * | K161704 | Phasor DrillSummary page 5…respectively Predicate Device Premarket Notification # (1) K961113; (2) K161704; respectively (1) 21 CFR 882.4300; (2) 21 CF… | 2016 |
What descends from it?
No later submission names this one as a predicate yet.
Has anything in its family been recalled? (0 Class I)
No FDA recall names this device.
No ancestor or descendant has a Class I recall.
What does this lineage say?
- The line of descent spans 32 years and passes through 5 companies; a new generation was cleared every 2.4 years on median.
- 4 of the 16 ancestors have a recall of any class.
- 2 other devices also cite its predicate K961113.
How does its category compare?
All HBG devicesHBG Drills, Burrs, Trephines & Accessories (Manual): FDA decisions, review times, recalls and adverse event reports over 20 years. 2025, this device’s year, is highlighted.
FDA decisions per year · HBG
1in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · HBG
Too few HBG 510(k)s in any year since 2007 to give a median.
Recalls per year · HBG
9in 2023
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · HBG
2in 2025
MAUDE reports naming product code HBG, not matched to any one device; reports are not rates.
View these four charts as a table
| Year | Decisions | Median 510(k) review, days | Recalls (Class I) | MAUDE reports |
|---|---|---|---|---|
| 2007 | 0 | — | 0 | 0 |
| 2008 | 0 | — | 0 | 0 |
| 2009 | 0 | — | 1 | 0 |
| 2010 | 0 | — | 0 | 0 |
| 2011 | 0 | — | 14 | 0 |
| 2012 | 0 | — | 0 | 1 |
| 2013 | 1 | — | 0 | 1 |
| 2014 | 0 | — | 14 | 5 |
| 2015 | 1 | — | 0 | 3 |
| 2016 | 1 | — | 0 | 0 |
| 2017 | 2 | — | 0 | 6 |
| 2018 | 0 | — | 0 | 2 |
| 2019 | 0 | — | 0 | 3 |
| 2020 | 0 | — | 0 | 0 |
| 2021 | 0 | — | 0 | 1 |
| 2022 | 0 | — | 0 | 3 |
| 2023 | 0 | — | 9 | 3 |
| 2024 | 0 | — | 0 | 11 |
| 2025 | 1 | — | 0 | 2 |
| 2026 | 0 | — | 1 | — |
What is it indicated for?
The Phasor LEGACY drill is a sterile, single-use, disposable device intended for use on adult patients during neurosurgical procedures for drilling of cranial bone.
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K252696 · printed Nov 6, 2026
Cite this page
510(k) Report. “K252696: Legacy.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K252696
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Record history
- FDA decision record loaded May 2, 2026
- Summary read Oct 13, 2026 (extraction version 9eaa42aa01ed)
- Lineage and recalls computed Nov 3, 2026
- Page last updated Nov 3, 2026