510(k) · Cleared
ClearedVent-Os Sinus Dilation family
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Sinusys Corporation · LRC Instrument, Ent Manual Surgical
Cleared on Jun 29, 2016 as substantially equivalent to K121943 (Entellus Medical, Inc., 2012) after a 100-day review. Its family tree reaches back 17 generations to 1994.
- Decided
- Jun 29, 2016
- Review
- 100 days
- Class
- Class I
- Product code
- LRC
- Recalls
- None
- Predicates
- 1
Its longest line of descent runs back 17 generations to K936109 (1994). 82 ancestors in all, the oldest K800617 (1980). No later device cites it as a predicate yet.
- Root · 17 generations backK936109 Sharplan Model 1120 CO2 Surgical LaserSharplan Lasers, Inc. · 1994
- 13 generations between
- 3 generations backK112506 Xpress Multi-Sinus Dilation ToolEntellus Medical, Inc. · 2011
- 2 generations backK121174 Xpress Multi-Sinus Dilation ToolEntellus Medical, Inc. · 2012
- 1 generation backK121943 Xpress Multi-Sinus Dilation ToolEntellus Medical, Inc. · 2012
- This deviceK160770 Vent-Os Sinus Dilation familySinusys Corporation · 2016
Show all 17 generations
- Root · 17 generations backK936109 Sharplan Model 1120 CO2 Surgical LaserSharplan Lasers, Inc. · 1994
- 16 generations backK960521 Sharplan Lasers, Inc. Silktouch Flash ScannerSharplan Lasers, Inc. · 1996
- 15 generations backK963339 Coherent Ultrapulse CO2 Surgical LasersCoherent Medical Group · 1997
- 14 generations backK974789 Coherent Ultrapulse S Series CO2 Surgical Lasers Model C and LLumenis, Inc. · 1998
- 13 generations backK990947 Modified Versapulse Select Single Wavelength, HO: Yag and Dual…Lumenis, Inc. · 1999
- 12 generations backK011703 Lumenis Versapulse Powersuite Holmium (HO:Yag) and Dual Wavelength…Lumenis · 2001 · Recalled
- 11 generations backK014290 Entec Plasma WandsArthrocare Corp. · 2002
- 10 generations backK021364 Modification to Entec Plasma WandsArthrocare Corp. · 2002
- 9 generations backK030108 Arthrocare Ent Coblator Surgery SystemArthrocare Corp. · 2003 · Recalled
- 8 generations backK034004 Diego RF Powered Dissector and Drill System ConsoleGyrus Ent LLC · 2004
- 7 generations backK072302 Entellus Medical RS-Series SystemEntellus Medical, Inc. · 2008
- 6 generations backK081542 Modification to Entellus Medical RS-Series SystemEntellus Medical, Inc. · 2008
- 5 generations backK093007 Entellus Medical Balloon DeviceEntellus Medical, Inc. · 2010
- 4 generations backK102003 Xpress Balloon DeviceEntellus Medical, Inc. · 2010
- 3 generations backK112506 Xpress Multi-Sinus Dilation ToolEntellus Medical, Inc. · 2011
- 2 generations backK121174 Xpress Multi-Sinus Dilation ToolEntellus Medical, Inc. · 2012
- 1 generation backK121943 Xpress Multi-Sinus Dilation ToolEntellus Medical, Inc. · 2012
- This deviceK160770 Vent-Os Sinus Dilation familySinusys Corporation · 2016
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −17 | K936109 | Sharplan Model 1120 CO2 Surgical Laser | Sharplan Lasers, Inc. | 1994 | — |
| −16 | K960521 | Sharplan Lasers, Inc. Silktouch Flash Scanner | Sharplan Lasers, Inc. | 1996 | — |
| −15 | K963339 | Coherent Ultrapulse CO2 Surgical Lasers | Coherent Medical Group | 1997 | — |
| −14 | K974789 | Coherent Ultrapulse S Series CO2 Surgical Lasers Model C and L | Lumenis, Inc. | 1998 | — |
| −13 | K990947 | Modified Versapulse Select Single Wavelength, HO: Yag and Dual Wavelength, HO… | Lumenis, Inc. | 1999 | — |
| −12 | K011703 | Lumenis Versapulse Powersuite Holmium (HO:Yag) and Dual Wavelength… | Lumenis | 2001 | 2 |
| −11 | K014290 | Entec Plasma Wands | Arthrocare Corp. | 2002 | — |
| −10 | K021364 | Modification to Entec Plasma Wands | Arthrocare Corp. | 2002 | — |
| −9 | K030108 | Arthrocare Ent Coblator Surgery System | Arthrocare Corp. | 2003 | 1 |
| −8 | K034004 | Diego RF Powered Dissector and Drill System Console | Gyrus Ent LLC | 2004 | — |
| −7 | K072302 | Entellus Medical RS-Series System | Entellus Medical, Inc. | 2008 | — |
| −6 | K081542 | Modification to Entellus Medical RS-Series System | Entellus Medical, Inc. | 2008 | — |
| −5 | K093007 | Entellus Medical Balloon Device | Entellus Medical, Inc. | 2010 | — |
| −4 | K102003 | Xpress Balloon Device | Entellus Medical, Inc. | 2010 | — |
| −3 | K112506 | Xpress Multi-Sinus Dilation Tool | Entellus Medical, Inc. | 2011 | — |
| −2 | K121174 | Xpress Multi-Sinus Dilation Tool | Entellus Medical, Inc. | 2012 | — |
| −1 | K121943 | Xpress Multi-Sinus Dilation Tool | Entellus Medical, Inc. | 2012 | — |
| 0 (this device) | K160770 | Vent-Os Sinus Dilation family | Sinusys Corporation | 2016 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1980 | 1 | 0 |
| 1986 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 4 | 0 |
| 1995 | 7 | 0 |
| 1996 | 8 | 0 |
| 1997 | 4 | 0 |
| 1998 | 7 | 0 |
| 1999 | 1 | 0 |
| 2000 | 12 | 0 |
| 2001 | 3 | 0 |
| 2002 | 5 | 0 |
| 2003 | 1 | 0 |
| 2005 | 1 | 0 |
| 2006 | 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 LRC? A 510(k) Report weighs predicate choices, recall history and review times for a new device like this one.
Top candidate predicates for a new LRC device
- #1 K230258 BB 8 Sinus Dilation Kitscore 11.1 · 20 generations · no Class I recall
- #2 Held for the reportin the report
- #3 Held for the reportin the report
What was it cleared against? (1)
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 |
|---|---|---|---|
| * | K121943 | Xpress Multi-Sinus Dilation ToolSummary page 4…ument. Product Code/ Regulation: LRC / 874.4420 Classification: Class I, Exempt Predicate Device: XprESS Multi-Sinus Dilation Tool (K121943) Reference Devices: Vent-Os® Sinus Dilation System (K133016) Relieva Spin Sinus Dilation System (K111875)… | 2012 |
| † | K133016 | Vent-OS Sinus Dilation System | 2013 |
| † | K111875 | Relieva Spin Sinus Dilation System | 2011 |
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 22 years and passes through 8 companies; a new generation was cleared every 1.1 years on median.
- 6 of the 82 ancestors have a recall of any class.
- 2 other devices also cite its predicate K121943.
How does its category compare?
All LRC devicesLRC Instrument, Ent Manual Surgical: FDA decisions, review times, recalls and adverse event reports over 20 years. 2016, this device’s year, is highlighted.
FDA decisions per year · LRC
1in 2023
2026 to Oct 25, outlined.
Median 510(k) review, days · LRC
131in 2020
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · LRC
1in 2024
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · LRC
44in 2025
MAUDE reports naming product code LRC, 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 | 1 |
| 2008 | 2 | — | 0 | 0 |
| 2009 | 1 | — | 0 | 8 |
| 2010 | 2 | — | 0 | 11 |
| 2011 | 6 | 106 | 0 | 14 |
| 2012 | 7 | 50 | 0 | 48 |
| 2013 | 7 | 104 | 0 | 53 |
| 2014 | 3 | 29 | 0 | 53 |
| 2015 | 6 | 105 | 0 | 41 |
| 2016 | 3 | 100 | 0 | 39 |
| 2017 | 2 | — | 0 | 32 |
| 2018 | 1 | — | 0 | 42 |
| 2019 | 1 | — | 0 | 19 |
| 2020 | 4 | 131 | 0 | 20 |
| 2021 | 0 | — | 0 | 23 |
| 2022 | 1 | — | 0 | 25 |
| 2023 | 1 | — | 1 | 14 |
| 2024 | 0 | — | 1 | 51 |
| 2025 | 0 | — | 0 | 44 |
| 2026 | 0 | — | 0 | — |
What is it indicated for?
SinuSys Vent-Os® Sinus Dilation family is intended to provide a means to access the sinus space and to dilate sinus ostia and associated spaces in adults for diagnostic and therapeutic procedures.
• The Vent-Os Maxillary Dilation System is indicated for dilation of Maxillary sinus and associated spaces.
• The Vent-Os Frontal Dilation System is indicated for dilation of the Frontal recess and associated spaces.
• The Vent-Os Sphenoid Dilation System is indicated for dilation of Sphenoid sinus and associated spaces.
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K160770 · printed Nov 5, 2026
Cite this page
510(k) Report. “K160770: Vent-Os Sinus Dilation family.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 5, 2026. https://510kreport.com/device/K160770
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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