510(k) · Cleared
ClearedB-Twin Bone Expander System (B-Twin BE System)
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Disc-O-Tech Medical Technologies, Ltd. · HRX Arthroscope
Cleared on Dec 17, 2003 as substantially equivalent to K981251 (Kyphon, Inc., 1998) and 4 other predicates after a 140-day review. Its family tree reaches back 5 generations to 1997. 16 later devices descend from it.
- Decided
- Dec 17, 2003
- Review
- 140 days
- Class
- Class II
- Product code
- HRX
- Recalls
- None
- Predicates
- 5
Its longest line of descent runs back 5 generations to K970097 (1997). 26 ancestors in all, the oldest K803106 (1981). 16 later devices descend from it, 2 citing it directly.
- Root · 5 generations backK970097 Proximal Femoral Nail (PFN) SystemSynthes (Usa) · 1997
- 4 generations backK010988 Fixion Interlocking Proximal Femoral Nailing SystemDisc-O-Tech Medical Technologies, Ltd. · 2001 · Recalled
- 3 generations backK012967 Modification to Fixion Interlocking Proximal Femoral Intramedullary…Disco-O-Tech Medical Technologies, Ltd. · 2001 · Recalled
- 2 generations backK021324 Fixion Intramedullary Nailing System (Fixion IM Nailing System)Disco-O-Tech Medical Technologies, Ltd. · 2002 · Recalled
- 1 generation backK023437 Fixion Interlocking Proximal Femur Intramedullary Nailing System…Disco-O-Tech Medical Technologies, Ltd. · 2002
- This deviceK032358 B-Twin Bone Expander System (B-Twin BE System)Disc-O-Tech Medical Technologies, Ltd. · 2003
- Descendant · cites it directly · 15 of its ownK034037 Sky Bone Expander SystemDisc-O-Tech Medical Technologies, Ltd. · 2004
- Descendant · cites it directly · 13 of its ownK040612 Sky Bone Expander System (Sky System)Disc-O-Tech Medical Technologies, Ltd. · 2004
- Descendant · 2 generations on · 12 of its ownK053336 Staxx FX SystemSpine Wave, Inc. · 2006
- Descendant · 3 generations on · 11 of its ownK063606 Modification to Staxx FX SystemSpine Wave, Inc. · 2007
- Descendant · 4 generations on · 9 of its ownK132817 Kiva VCF Treatment SystemBenvenue Medical, Inc. · 2014
Showing 5 of 16 descendants. See all descendants
Descendants cleared per year
Most influential descendants
Showing 5 of 16 · See all- K034037Sky Bone Expander SystemDisc-O-Tech Medical Technologies, Ltd. · 2004 · cites it directly15descendants
- K040612Sky Bone Expander System (Sky System)Disc-O-Tech Medical Technologies, Ltd. · 2004 · cites it directly13descendants
- K053336Staxx FX SystemSpine Wave, Inc. · 2006 · 2 generations on12descendants
- K063606Modification to Staxx FX SystemSpine Wave, Inc. · 2007 · 3 generations on11descendants
- K132817Kiva VCF Treatment SystemBenvenue Medical, Inc. · 2014 · 4 generations on9descendants
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −5 | K970097 | Proximal Femoral Nail (PFN) System | Synthes (Usa) | 1997 | — |
| −4 | K010988 | Fixion Interlocking Proximal Femoral Nailing System | Disc-O-Tech Medical Technologies, Ltd. | 2001 | 1 |
| −3 | K012967 | Modification to Fixion Interlocking Proximal Femoral Intramedullary Nailing… | Disco-O-Tech Medical Technologies, Ltd. | 2001 | 1 |
| −2 | K021324 | Fixion Intramedullary Nailing System (Fixion IM Nailing System) | Disco-O-Tech Medical Technologies, Ltd. | 2002 | 1 |
| −1 | K023437 | Fixion Interlocking Proximal Femur Intramedullary Nailing System (Fixion PF… | Disco-O-Tech Medical Technologies, Ltd. | 2002 | — |
| 0 (this device) | K032358 | B-Twin Bone Expander System (B-Twin BE System) | Disc-O-Tech Medical Technologies, Ltd. | 2003 | — |
| +1 | K034037 | Sky Bone Expander System | Disc-O-Tech Medical Technologies, Ltd. | 2004 | — |
| +1 | K040612 | Sky Bone Expander System (Sky System) | Disc-O-Tech Medical Technologies, Ltd. | 2004 | — |
| +2 | K053336 | Staxx FX System | Spine Wave, Inc. | 2006 | — |
| +3 | K063606 | Modification to Staxx FX System | Spine Wave, Inc. | 2007 | — |
| +4 | K132817 | Kiva VCF Treatment System | Benvenue Medical, Inc. | 2014 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1981 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 0 |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2004 | 3 | 0 |
| 2006 | 1 | 0 |
| 2007 | 1 | 0 |
| 2009 | 1 | 0 |
| 2014 | 2 | 0 |
| 2018 | 1 | 0 |
| 2020 | 2 | 0 |
| 2021 | 1 | 0 |
| 2022 | 1 | 0 |
| 2023 | 1 | 0 |
| 2024 | 1 | 0 |
| 2025 | 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 HRX? 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 HRX device
- #1 K260203 Fule Vertebroplasty Balloon Catheterscore 14.9 · 11 generations · no Class I recall
- #2 Held for the reportin the report
- #3 Held for the reportin the report
What was it cleared against? (5)
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 |
|---|---|---|---|
| * | K981251 | Kyphon Inflatable Bone TampSummary page 2…' Zo~k_3 ), crp Disc-O-Tech Medical Technologies, Ltd. B-Twin BE System 510(k) Predicate Devices /KyphX Inflatable Bone Tamp (K981251, K010246), by Kyphon Inc. /Fixion Interlocking Proximal Femoral Intramedullary Nailing System (KO10988, K012967, K02343… | 1998 |
| * | K010246 | Kyphx Inflatable Bone Tamp, Size 20/3,Model K01A, Kyphx Inflatable Bone Tamp, Size 15/3…Summary page 2…' Zo~k_3 ), crp Disc-O-Tech Medical Technologies, Ltd. B-Twin BE System 510(k) Predicate Devices /KyphX Inflatable Bone Tamp (K981251, K010246), by Kyphon Inc. /Fixion Interlocking Proximal Femoral Intramedullary Nailing System (KO10988, K012967, K023437) by Dis… | 2001 |
| * | K010988 | Fixion Interlocking Proximal Femoral Nailing SystemSummary page 2…46). In addition, with respect to certain issues like sterilization, equivalence is claimed to the different Fixion Intramedullary Nailing Systems (e.g., the Fixion PF - K010988, K012967, K023437). Expandable Tube material equivalence is claimed to polymeric tubes for medical applications.… | 2001 |
| * | K012967 | Modification to Fixion Interlocking Proximal Femoral Intramedullary Nailing SystemSummary page 2…ate Devices /KyphX Inflatable Bone Tamp (K981251, K010246), by Kyphon Inc. /Fixion Interlocking Proximal Femoral Intramedullary Nailing System (KO10988, K012967, K023437) by Disc-O-Tech Medical Technologies, Ltd. Intended Use The B-Twin BE System is intended for use as conventional bone… | 2001 |
| * | K023437 | Fixion Interlocking Proximal Femur Intramedullary Nailing System (Fixion PF Nailing…Summary page 2…es /KyphX Inflatable Bone Tamp (K981251, K010246), by Kyphon Inc. /Fixion Interlocking Proximal Femoral Intramedullary Nailing System (KO10988, K012967, K023437) by Disc-O-Tech Medical Technologies, Ltd. Intended Use The B-Twin BE System is intended for use as conventional bone tamp for… | 2002 |
What descends from it? (16)
See all 162 later devices cite it directly; ranked here by how many devices descend from each in turn.
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 6 years and passes through 3 companies; a new generation was cleared every 8 months on median.
- 6 of the 26 ancestors have a recall of any class.
- Of its descendants, K034037 (Disc-O-Tech Medical Technologies, Ltd., 2004) has gone furthest, with 15 descendants of its own.
- 13 other devices also cite its predicate K981251.
How does its category compare?
All HRX devicesHRX Arthroscope: FDA decisions, review times, recalls and adverse event reports over 20 years.
FDA decisions per year · HRX
9in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · HRX
107in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · HRX
1in 2024
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · HRX
2,076in 2025
MAUDE reports naming product code HRX, 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 | 7 | 89 | 3 | 421 |
| 2008 | 9 | 115 | 13 | 441 |
| 2009 | 11 | 139 | 23 | 558 |
| 2010 | 9 | 114 | 12 | 612 |
| 2011 | 3 | 84 | 6 | 631 |
| 2012 | 11 | 102 | 0 | 778 |
| 2013 | 12 | 90 | 4 | 678 |
| 2014 | 9 | 140 | 0 | 802 |
| 2015 | 4 | 132 | 7 | 763 |
| 2016 | 8 | 89 | 0 | 469 |
| 2017 | 4 | 97 | 0 | 934 |
| 2018 | 12 | 101 | 1 | 1,581 |
| 2019 | 12 | 45 | 0 | 1,676 |
| 2020 | 7 | 141 | 0 | 1,706 |
| 2021 | 7 | 57 | 3 | 1,908 |
| 2022 | 3 | 89 | 0 | 1,406 |
| 2023 | 4 | 249 | 0 | 1,852 |
| 2024 | 6 | 110 | 1 | 2,427 |
| 2025 | 9 | 107 | 0 | 2,076 |
| 2026 | 7 | 217 | 0 | — |
What is it indicated for?
The B-Twin Bone Expander System (B-Twin BE System) is intended for use as a
conventional bone tamp for the reduction of fractures and/or creation of a void in
cancellous bone in the spine, hand, tibia, radius, and calcaneus.
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K032358 · printed Nov 6, 2026
Cite this page
510(k) Report. “K032358: B-Twin Bone Expander System (B-Twin BE System).” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K032358
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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