510(k) · Cleared
ClearedSignosRT Bladder Ultrasound System
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Signostics, Ltd. · IYO System, Imaging, Pulsed Echo, Ultrasonic
Cleared on Jan 14, 2015 as substantially equivalent to K033906 (Mediwatch Plc, 2003) and 1 other predicate after a 36-day review. Its family tree reaches back 10 generations to 1995.
- Decided
- Jan 14, 2015
- Review
- 36 days
- Class
- Class II
- Product code
- IYO
- Recalls
- None
- Predicates
- 2
Its longest line of descent runs back 10 generations to K935595 (1995). 69 ancestors in all, the oldest K850478 (1985). No later device cites it as a predicate yet.
- Root · 10 generations backK935595 Acuson Model 3001Acuson Corp. · 1995
- 6 generations between
- 3 generations backK063761 Acuson P10 Diagnostic Ultrasound SystemSiemens Medical Solutions USA, Inc. · 2007
- 2 generations backK090505 Speq Ultrasound SystemSignostics Pty, Ltd. · 2009
- 1 generation backK130659 Speqrt Ultrasound SystemSignostics Pty, Ltd. · 2013
- This deviceK143493 SignosRT Bladder Ultrasound SystemSignostics, Ltd. · 2015
Show all 10 generations
- Root · 10 generations backK935595 Acuson Model 3001Acuson Corp. · 1995
- 9 generations backK973767 Harmonic Imaging with ContrastAcuson Corp. · 1997
- 8 generations backK022567 Sequoia Signature II Diagnostic Ultrasound SystemAcuson Corp. · 2002
- 7 generations backK032114 Sequoia 8.0 Diagnostic Ultrasound SystemSiemens Medical Solutions USA, Inc. · 2003
- 6 generations backK041319 Sequoia Diagnostic Ultrasound SystemSiemens Medical Solutions USA, Inc. · 2004
- 5 generations backK051139 Acuson Sequoia Diagnostic Ultrasound SystemSiemens Medical Solutions USA, Inc. · 2005
- 4 generations backK052410 Acuson Sequoia Ultrasound SystemSiemens Medical Solutions USA, Inc. · 2005
- 3 generations backK063761 Acuson P10 Diagnostic Ultrasound SystemSiemens Medical Solutions USA, Inc. · 2007
- 2 generations backK090505 Speq Ultrasound SystemSignostics Pty, Ltd. · 2009
- 1 generation backK130659 Speqrt Ultrasound SystemSignostics Pty, Ltd. · 2013
- This deviceK143493 SignosRT Bladder Ultrasound SystemSignostics, Ltd. · 2015
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −10 | K935595 | Acuson Model 3001 | Acuson Corp. | 1995 | — |
| −9 | K973767 | Harmonic Imaging with Contrast | Acuson Corp. | 1997 | — |
| −8 | K022567 | Sequoia Signature II Diagnostic Ultrasound System | Acuson Corp. | 2002 | — |
| −7 | K032114 | Sequoia 8.0 Diagnostic Ultrasound System | Siemens Medical Solutions USA, Inc. | 2003 | — |
| −6 | K041319 | Sequoia Diagnostic Ultrasound System | Siemens Medical Solutions USA, Inc. | 2004 | — |
| −5 | K051139 | Acuson Sequoia Diagnostic Ultrasound System | Siemens Medical Solutions USA, Inc. | 2005 | — |
| −4 | K052410 | Acuson Sequoia Ultrasound System | Siemens Medical Solutions USA, Inc. | 2005 | — |
| −3 | K063761 | Acuson P10 Diagnostic Ultrasound System | Siemens Medical Solutions USA, Inc. | 2007 | — |
| −2 | K090505 | Speq Ultrasound System | Signostics Pty, Ltd. | 2009 | — |
| −1 | K130659 | Speqrt Ultrasound System | Signostics Pty, Ltd. | 2013 | — |
| 0 (this device) | K143493 | SignosRT Bladder Ultrasound System | Signostics, Ltd. | 2015 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1989 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 5 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 7 | 0 |
| 1998 | 4 | 0 |
| 1999 | 9 | 0 |
| 2000 | 5 | 0 |
| 2001 | 4 | 0 |
| 2002 | 5 | 0 |
| 2003 | 3 | 0 |
| 2004 | 2 | 0 |
| 2005 | 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 IYO? 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 IYO device
- #1 K243937 Accuro 3Sscore 20.5 · 18 generations · no Class I recall
- #2 Held for the reportin the report
- #3 Held for the reportin 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 |
|---|---|---|---|
| * | K033906 | Portascan Bladder Scanner, Model PA00146Summary page 6…ound Transducer (21 CFR 892.1570, 90-ITX) Classification Panel: Radiology 8. Predicate Devices Portascan Bladder Scanner (K033906) SignosRT Ultrasound System (K130659) December 28, 2014… | 2003 |
| * | K130659 | Speqrt Ultrasound SystemSummary page 6…-ITX) Classification Panel: Radiology 8. Predicate Devices Portascan Bladder Scanner (K033906) SignosRT Ultrasound System (K130659) December 28, 2014 Page 1 9. Risk… | 2013 |
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 20 years and passes through 4 companies; a new generation was cleared every 1.8 years on median.
- 4 of the 69 ancestors have a recall of any class.
How does its category compare?
All IYO devicesIYO System, Imaging, Pulsed Echo, Ultrasonic: FDA decisions, review times, recalls and adverse event reports over 20 years. 2015, this device’s year, is highlighted.
FDA decisions per year · IYO
7in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · IYO
171in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · IYO
1in 2022
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · IYO
485in 2025
MAUDE reports naming product code IYO, 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 | 20 | 17 | 4 | 39 |
| 2008 | 14 | 36 | 5 | 20 |
| 2009 | 13 | 79 | 9 | 27 |
| 2010 | 15 | 113 | 8 | 20 |
| 2011 | 11 | 69 | 0 | 58 |
| 2012 | 15 | 68 | 2 | 78 |
| 2013 | 17 | 50 | 3 | 436 |
| 2014 | 14 | 63 | 2 | 304 |
| 2015 | 19 | 46 | 1 | 268 |
| 2016 | 10 | 36 | 0 | 254 |
| 2017 | 19 | 72 | 0 | 238 |
| 2018 | 14 | 56 | 1 | 368 |
| 2019 | 13 | 59 | 1 | 537 |
| 2020 | 11 | 57 | 0 | 498 |
| 2021 | 15 | 64 | 11 | 617 |
| 2022 | 5 | 190 | 1 | 511 |
| 2023 | 11 | 177 | 0 | 527 |
| 2024 | 10 | 220 | 0 | 640 |
| 2025 | 7 | 171 | 0 | 485 |
| 2026 | 10 | 139 | 1 | — |
What is it indicated for?
SignosRT Bladder scanner projects ultrasound energy through the lower abdomen of a patient to obtain an image of the bladder that is used to non-invasively determine bladder volume. Users must have ultrasound training before using the device.
Contraindications
The SignosRT Bladder Scanner is designed for percutaneous scanning only. Do not attempt intracavity imaging; in particular, trans-esophageal, trans-vaginal and trans-rectal scans are contraindicated.
The SignosRT Bladder Scanner is contraindicated for pregnant patients.
Indications for use read by OCR from a scanned FDA summary, so letters may be misread. Check the PDF before quoting it.
https://510kreport.com/device/K143493 · printed Nov 6, 2026
Cite this page
510(k) Report. “K143493: SignosRT Bladder Ultrasound System.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K143493
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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