510(k) · Cleared
ClearedMaxems, Models 1000 and 2000
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Bio Protech, Inc. · IPF Stimulator, Muscle, Powered
Cleared on Nov 30, 2009 as substantially equivalent to K072795 (Koalaty Products, Inc., 2007) and 1 other predicate after a 216-day review. Its family tree reaches back 4 generations to 2001.
- Decided
- Nov 30, 2009
- Review
- 216 days
- Class
- Class II
- Product code
- IPF
- Recalls
- None
- Predicates
- 2
Its longest line of descent runs back 4 generations to K010665 (2001). No later device cites it as a predicate yet.
- Root · 4 generations backK010665 Transamerica Digital EmsTransamerica Medical Systems · 2001
- 3 generations backK020750 Digital Electrical Muscle Stimulator, Model EV-807 Digital EmsEveryway Medical Instruments Co.,Ltd · 2002
- 2 generations backK033544 Electrical Muscle Stimulator, Models N605 and N607Everyway Medical Instruments Co.,Ltd · 2003
- 1 generation backK072795 Models Ems 5.0, Ems 5.1Koalaty Products, Inc. · 2007
- This deviceK091248 Maxems, Models 1000 and 2000Bio Protech, Inc. · 2009
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −4 | K010665 | Transamerica Digital Ems | Transamerica Medical Systems | 2001 | — |
| −3 | K020750 | Digital Electrical Muscle Stimulator, Model EV-807 Digital Ems | Everyway Medical Instruments Co.,Ltd | 2002 | — |
| −2 | K033544 | Electrical Muscle Stimulator, Models N605 and N607 | Everyway Medical Instruments Co.,Ltd | 2003 | — |
| −1 | K072795 | Models Ems 5.0, Ems 5.1 | Koalaty Products, Inc. | 2007 | — |
| 0 (this device) | K091248 | Maxems, Models 1000 and 2000 | Bio Protech, Inc. | 2009 | — |
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 IPF? 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 IPF device
- #1 K241433 EVE Synergy (EVE-20M)score 19.7 · 25 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 |
|---|---|---|---|
| * | K072795 | Models Ems 5.0, Ems 5.1Summary page 1…ME: MAXEMS 1000 / MAXEMS 2000 COMMON NAME: EMS CLASSIFICATION NAME: Stimulator, Muscle, Powered CLASSIFICATION CODE: IPF REGULATION NO.: 890.5850 PREDICATE DEVICES: K072795 EMS 5.0 / K020750 EV-807 Digital EMS DEVICE DESCRIPTION: The MAXEMS are battery operated pulse generators that send electrical… | 2007 |
| * | K020750 | Digital Electrical Muscle Stimulator, Model EV-807 Digital EmsSummary page 1…MAXEMS 2000 COMMON NAME: EMS CLASSIFICATION NAME: Stimulator, Muscle, Powered CLASSIFICATION CODE: IPF REGULATION NO.: 890.5850 PREDICATE DEVICES: K072795 EMS 5.0 / K020750 EV-807 Digital EMS DEVICE DESCRIPTION: The MAXEMS are battery operated pulse generators that send electrical impulses through e… | 2002 |
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 8 years and passes through 4 companies; a new generation was cleared every 2.0 years on median.
- None of the 4 ancestors has a recall.
How does its category compare?
All IPF devicesIPF Stimulator, Muscle, Powered: FDA decisions, review times, recalls and adverse event reports over 20 years. 2009, this device’s year, is highlighted.
FDA decisions per year · IPF
3in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · IPF
257in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · IPF
1in 2023
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · IPF
8in 2025
MAUDE reports naming product code IPF, 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 | 8 | 143 | 0 | 11 |
| 2008 | 6 | 140 | 1 | 213 |
| 2009 | 7 | 216 | 0 | 150 |
| 2010 | 4 | 121 | 0 | 14 |
| 2011 | 4 | 275 | 1 | 25 |
| 2012 | 4 | 269 | 3 | 16 |
| 2013 | 10 | 180 | 0 | 6 |
| 2014 | 4 | 264 | 0 | 19 |
| 2015 | 3 | 43 | 0 | 11 |
| 2016 | 7 | 113 | 0 | 8 |
| 2017 | 5 | 110 | 0 | 2 |
| 2018 | 5 | 73 | 0 | 3 |
| 2019 | 4 | 133 | 0 | 10 |
| 2020 | 9 | 121 | 0 | 13 |
| 2021 | 15 | 98 | 0 | 3 |
| 2022 | 7 | 108 | 0 | 4 |
| 2023 | 9 | 255 | 1 | 8 |
| 2024 | 7 | 201 | 0 | 5 |
| 2025 | 3 | 257 | 0 | 8 |
| 2026 | 3 | 206 | 0 | — |
What is it indicated for?
1. Relax muscles
2. Prevention or retardation of disuse atrophy
3. Increasing local blood circulation
4. Muscle re-education
5. Immediate post-surgical stimulation of calf muscle to prevent venous thrombosis
6. Maintaining or increasing range of motion
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K091248 · printed Nov 4, 2026
Cite this page
510(k) Report. “K091248: Maxems, Models 1000 and 2000.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 4, 2026. https://510kreport.com/device/K091248
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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