510(k) · Cleared
ClearedSingle Use Aspiration Needle (NA-201SX-4021); Single Use Aspiration Needle (NA-201SX-4022)
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Olympus Medical Systems Corporation · KTI Bronchoscope Accessory
Cleared on Jul 29, 2025 as substantially equivalent to K190239 (Olympus Medical Systems Corp., 2019) after a 60-day review. Its family tree reaches back 13 generations to 1989. 1 of the 60 devices in its family, counting itself, has a Class I recall.
- Decided
- Jul 29, 2025
- Review
- 60 days
- Class
- Class II
- Product code
- KTI
- Recalls
- None
- Predicates
- 1
Its longest line of descent runs back 13 generations to K894632 (1989). 59 ancestors in all, the oldest K812810 (1981). No later device cites it as a predicate yet. 1 of the 60 devices in this family, counting this one, has a Class I recall.
- Root · 13 generations backK894632 Model SSH-140A Ultrasound Imaging SystemToshiba America Medical Systems, In.C · 1989
- 9 generations between
- 3 generations backK152922 ViziShot FLEXSpiration, Inc. · 2016
- 2 generations backK163469 ViziShot 2 FLEXOlympus Surgical Technologies America · 2017
- 1 generation backK190239 Single Use Aspiration NeedleOlympus Medical Systems Corp. · 2019
- This deviceK251664 Single Use Aspiration Needle (NA-201SX-4021); Single Use Aspiration…Olympus Medical Systems Corporation · 2025
Show all 13 generations
- Root · 13 generations backK894632 Model SSH-140A Ultrasound Imaging SystemToshiba America Medical Systems, In.C · 1989
- 12 generations backK941593 Diagnostic Ultrasonic TransducerToshiba America Medical Systems, In.C · 1996
- 11 generations backK970047 Phased Array Transducer - - PSK-20CTToshiba America Medical Systems, In.C · 1997
- 10 generations backK991710 Ssa-370A/Powervision 6000Toshiba America Medical Systems, In.C · 1999
- 9 generations backK994096 Sonoheart Hand-Carried Echocardiography SystemSonosite,Inc. · 1999
- 8 generations backK010591 Olympus EU-C60 Eus Exera Compact Endoscopic Ultrasound CenterOlympus Optical Co., Ltd. · 2001 · Recalled
- 7 generations backK031347 Ultrasonic Gastrovideoscope, Type UC160P-AT8 and UCT160-AT8Olympus Optical Co., Ltd. · 2003
- 6 generations backK042140 Olympus BF Type UC160-OL8Olympus Corporation · 2004 · Recalled
- 5 generations backK050503 Single Use Aspiration Needle NA-201SX-4022Olympus Medical Systems Corporation · 2005 · Recalled
- 4 generations backK142909 Flexible 19G EBUS NeedleSpiration, Inc. · 2015
- 3 generations backK152922 ViziShot FLEXSpiration, Inc. · 2016
- 2 generations backK163469 ViziShot 2 FLEXOlympus Surgical Technologies America · 2017
- 1 generation backK190239 Single Use Aspiration NeedleOlympus Medical Systems Corp. · 2019
- This deviceK251664 Single Use Aspiration Needle (NA-201SX-4021); Single Use Aspiration…Olympus Medical Systems Corporation · 2025
Class I recalls in this family
- K023984 Modification to Olympus Bronchoscopes BF-40…8 generations back · 2003
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −13 | K894632 | Model SSH-140A Ultrasound Imaging System | Toshiba America Medical Systems, In.C | 1989 | — |
| −12 | K941593 | Diagnostic Ultrasonic Transducer | Toshiba America Medical Systems, In.C | 1996 | — |
| −11 | K970047 | Phased Array Transducer - - PSK-20CT | Toshiba America Medical Systems, In.C | 1997 | — |
| −10 | K991710 | Ssa-370A/Powervision 6000 | Toshiba America Medical Systems, In.C | 1999 | — |
| −9 | K994096 | Sonoheart Hand-Carried Echocardiography System | Sonosite,Inc. | 1999 | — |
| −8 | K010591 | Olympus EU-C60 Eus Exera Compact Endoscopic Ultrasound Center | Olympus Optical Co., Ltd. | 2001 | 2 |
| −7 | K031347 | Ultrasonic Gastrovideoscope, Type UC160P-AT8 and UCT160-AT8 | Olympus Optical Co., Ltd. | 2003 | — |
| −6 | K042140 | Olympus BF Type UC160-OL8 | Olympus Corporation | 2004 | 1 |
| −5 | K050503 | Single Use Aspiration Needle NA-201SX-4022 | Olympus Medical Systems Corporation | 2005 | 5 |
| −4 | K142909 | Flexible 19G EBUS Needle | Spiration, Inc. | 2015 | — |
| −3 | K152922 | ViziShot FLEX | Spiration, Inc. | 2016 | — |
| −2 | K163469 | ViziShot 2 FLEX | Olympus Surgical Technologies America | 2017 | — |
| −1 | K190239 | Single Use Aspiration Needle | Olympus Medical Systems Corp. | 2019 | — |
| 0 (this device) | K251664 | Single Use Aspiration Needle (NA-201SX-4021); Single Use Aspiration Needle… | Olympus Medical Systems Corporation | 2025 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1981 | 1 | 0 |
| 1986 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 4 | 0 |
| 1994 | 4 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 9 | 0 |
| 1998 | 4 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 0 |
| 2003 | 2 | 1 |
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.
1 device in this family has a Class I recall. 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 KTI device
- #1 K261274 EchoTip Ultra® Endobronchial HD Ultrasound…score 15.0 · 12 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 |
|---|---|---|---|
| * | K190239 | Single Use Aspiration NeedleSummary page 6…NA-201SX-4021 & NA-201SX-4022 3. PREDICATE DEVICE • Trade Name: Single Use Aspiration Needle • Model: NA-U401SX-4025N • 510(k) Number: K190239 4. REFERENCE DEVICE • Trade Name: ViziShot 2 FLEX • Model: NA-U403SX-4019 • 510(k) Number: K163469 5. DE… | 2019 |
| † | K163469 | ViziShot 2 FLEX | 2017 |
What descends from it?
No later submission names this one as a predicate yet.
Has anything in its family been recalled? (1 Class I)
No FDA recall names this device.
Relatives with a Class I recall
Class I is FDA’s most serious recall class. A recall in the family tree is context for this device, not evidence about it.
- K023984Modification to Olympus Bronchoscopes BF-40 Series, BF-240 Series, and BF-160 SeriesThe Olympus Optical Co. · 2003 · 8 generations back · ◆ in the 2003 ancestors bar of FIG. 114 Class I recalls
What does this lineage say?
- The line of descent spans 36 years and passes through 8 companies; a new generation was cleared every 1.3 years on median.
- 17 of the 59 ancestors have a recall of any class; 1 has a Class I recall.
- 1 other device also cites its predicate K190239.
How does its category compare?
All KTI devicesKTI Bronchoscope Accessory: FDA decisions, review times, recalls and adverse event reports over 20 years. 2025, this device’s year, is highlighted.
FDA decisions per year · KTI
5in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · KTI
61in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · KTI
1in 2018
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · KTI
198in 2025
MAUDE reports naming product code KTI, 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 | 3 |
| 2008 | 1 | — | 0 | 11 |
| 2009 | 1 | — | 0 | 9 |
| 2010 | 0 | — | 0 | 8 |
| 2011 | 1 | — | 0 | 17 |
| 2012 | 0 | — | 1 | 12 |
| 2013 | 0 | — | 0 | 7 |
| 2014 | 0 | — | 0 | 4 |
| 2015 | 2 | — | 0 | 2 |
| 2016 | 3 | 140 | 0 | 7 |
| 2017 | 3 | 115 | 0 | 9 |
| 2018 | 1 | — | 1 | 14 |
| 2019 | 1 | — | 0 | 27 |
| 2020 | 1 | — | 0 | 37 |
| 2021 | 1 | — | 0 | 47 |
| 2022 | 3 | 137 | 0 | 131 |
| 2023 | 4 | 168 | 0 | 130 |
| 2024 | 0 | — | 0 | 149 |
| 2025 | 5 | 61 | 0 | 198 |
| 2026 | 3 | 98 | 0 | — |
What is it indicated for?
The Single Use Aspiration Needle NA-201SX-4021 is intended to be used for ultrasound guided fine needle aspiration (FNA) of submucosal and extramural lesions of the tracheobronchial tree in combination with an ultrasound endoscope.
The Single Use Aspiration Needle NA-201SX-4022 is intended to be used for ultrasound guided fine needle aspiration (FNA) of submucosal and extramural lesions of the tracheobronchial tree in combination with an ultrasound endoscope.
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K251664 · printed Nov 4, 2026
Cite this page
510(k) Report. “K251664: Single Use Aspiration Needle (NA-201SX-4021); Single Use Aspiration Needle (NA-201SX-4022).” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 4, 2026. https://510kreport.com/device/K251664
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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