Wright's SALVATION™ External Fixation System is intended for: . Fusions of the foot including: o Triple arthrodesis o Isolated hindfoot arthrodesis o Midfoot arthrodesis o Joints involved include tibiotalar, subtalar, talonavicular, calcaneocuboid, pantalar, tibio- talocalcaneus, naviculocuneiform, metatarsal cuneiform (first, second, third - e.g. Lapidus, TMT), metatarsal cuboid . Treatment of fractures including: o Treatment of LisFranc fracture/dislocations in diabetic and Charcot neuropathy patient o Fractures and/or comminuted fractures (open or closed) of the calcaneus, talus, cuboid, navicular, cuneiforms, and/or metatarsals (including Jones fractures), ankle, and distal tibia o Additional fixation adjunct to internal fixation of the distal tibia, calcaneus, talus, navicular, cuboid, cuneiforms, and/or metatarsals in patients with significant comorbidities (i.e. diabetes) that may preclude use of isolated internal fixation . Reconstruction of deformities including: o Neuropathic deformities o Charcot reconstruction with or without corrective osteotomies o Diabetic Charcot Reconstruction o Prevention and treatment of contracture of joints and tendons in equinus . Treatment of infected unions, nonunions, or malunions . Offloading and or immobilization of ulcers and/or wounds of the foot or ankle . Stabilization associated with tendon or ligament surgeries. Tendon lengthening, repairs and transfers both deep and or superficial around the foot and ankle including posterior tibial, tibialis anterior, flexor digitorum longus, achilles, flexor hallucis longus, peroneus brevis, peroneus longus, extensor hallucis longus, extensor digitorum longus . Tumor and neoplasm resection and reconstruction . Stabilization associated with rotation flaps, free flaps, muscle flaps, advancement flaps, fasciocutaneous flap, split thickness skin grafting, biological graft alternatives . Pseudoarthrosis or non-unions of long bones, limb lengthening by epiphyseal or metaphyseal distraction osteogenesis including bone transport . Correction of bony or soft tissue deformities . Correction of segmental or nonsegmental bony or soft tissue defects . Use on long bones including the tibia and fibula . Use with or without IM nail in the ankle in Charcot patients
Device Story
External fixation system for orthopedic stabilization; components include rings, wires, fixation bolts, pins, bushings, and rocker plates. Rings feature slots for sliding fixation elements, eliminating need to handle small loose components. Used by surgeons in clinical settings for bone fixation, deformity correction, and limb lengthening. Provides mechanical stability to bone segments; allows for distraction osteogenesis. Benefits patients by enabling reconstruction and healing in complex cases, including those with comorbidities like diabetes or Charcot neuropathy.
Clinical Evidence
No clinical data. Substantial equivalence established via bench testing, including mechanical pull-out testing and finite element analysis.
Technological Characteristics
System consists of rings, wires, bolts, pins, bushings, and rocker plates. Features slotted rings for adjustable fixation element positioning. Materials and mechanical strength are equivalent to predicate devices. Non-powered, mechanical orthopedic fixation device.
Indications for Use
Indicated for patients requiring foot/ankle fusion, fracture treatment (including diabetic/Charcot neuropathy), deformity reconstruction, treatment of nonunions/malunions, ulcer offloading, stabilization for tendon/ligament surgery, tumor resection, or limb lengthening. Applicable to foot, ankle, tibia, and fibula.
Regulatory Classification
Identification
Single/multiple component metallic bone fixation appliances and accessories are devices intended to be implanted consisting of one or more metallic components and their metallic fasteners. The devices contain a plate, a nail/plate combination, or a blade/plate combination that are made of alloys, such as cobalt-chromium-molybdenum, stainless steel, and titanium, that are intended to be held in position with fasteners, such as screws and nails, or bolts, nuts, and washers. These devices are used for fixation of fractures of the proximal or distal end of long bones, such as intracapsular, intertrochanteric, intercervical, supracondylar, or condylar fractures of the femur; for fusion of a joint; or for surgical procedures that involve cutting a bone. The devices may be implanted or attached through the skin so that a pulling force (traction) may be applied to the skeletal system.
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Image /page/0/Picture/0 description: The image contains the logos of the Department of Health & Human Services and the Food and Drug Administration (FDA). The Department of Health & Human Services logo is on the left, and the FDA logo is on the right. The FDA logo includes the agency's name, "U.S. Food & Drug Administration," in blue text.
Wright Medical Technology, Inc. Rachel Roberts Regulatory Affairs Specialist 1023 Cherry Road Memphis, Tennessee 38117
Re: K180832
Trade/Device Name: SALVATION External Fixation System Regulation Number: 21 CFR 888.3030 Regulation Name: Single/Multiple Component Metallic Bone Fixation Appliances and Accessories Regulatory Class: Class II Product Code: KTT Dated: May 10, 2018 Received: May 11, 2018
Dear Rachel Roberts:
We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.
Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); medical device reporting of medical device-related adverse events) (21 CFR 803); good manufacturing practice requirements as set forth in the quality systems (OS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
June 6, 2018
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Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm for the CDRH's Office of Surveillance and Biometrics/Division of Postmarket Surveillance.
For comprehensive regulatory information about medical devices and radiation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/MedicalDevices/DeviceRegulationandGuidance/) and CDRH Learn (http://www.fda.gov/Training/CDRHLearn). Additionally, you may contact the Division of Industry and Consumer Education (DICE) to ask a question about a specific regulatory topic. See the DICE website (http://www.fda.gov/DICE) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).
Sincerely,
# Katherine D. Kavlock -S
for Mark N. Melkerson Director Division of Orthopedic Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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Expiration Date: 06/30/2020
See PRA Statement below.
# Indications for Use
510(k) Number (if known)
#### K180832
Device Name SALVATION External Fixation System
Indications for Use (Describe) The SALVATION External Fixation System is intended for:
• Fusions of the foot including:
- o Triple arthrodesis
- o Isolated hindfoot arthrodesis
- o Midfoot arthrodesis
o Joints involved include tibiotalar, talonavicular, calcaneocuboid, pantalar, tibio- talocalcaneus, naviculocuneiform, metatarsal cuneiform (first, second, third - e.g. Lapidus, TMT), metatarsal cuboid
- · Treatment of fractures including:
o Treatment of LisFranc fracture/dislocations in diabetic and Charcot neuropathy patient
o Fractures and/or comminuted fractures (open or closed) of the calcaneus, talus, cuboid, navicular, cuneiforms, and/or metatarsals (including Jones fractures), ankle, and distal tibia
o Additional fixation adjunct to internal fixation of the distal tibia, calcaneus, talus, navicular, cuboid, cuneiforms, and/ or metatarsals in patients with significant comorbidities (i.e. diabetes) that may preclude use of isolated internal fixation
- · Reconstruction of deformities including:
- o Neuropathic deformities
- o Charcot reconstruction with or without corrective osteotomies
- o Diabetic Charcot Reconstruction
o Prevention and treatment of contracture of joints and tendons in equinus
- · Treatment of infected unions, nonunions, or malunions
- · Offloading and or immobilization of ulcers and/or wounds of the foot or ankle
· Stabilization associated with tendon or ligament surgeries. Tendon lengthening, repairs and transfers both deep and or superficial around the foot and ankle including posterior tibial, tibialis anterior, flexor digitorum longus, achilles, flexor hallucis longus, peroneus brevis, peroneus longus, extensor hallucis longus, extensor digitorum longus
· Tumor and neoplasm resection and reconstruction
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| • Stabilization associated with rotation flaps, free flaps, muscle flaps, advancement flaps, fasciocutaneous flap, split thickness skin grafting, biological graft alternatives |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
· Pseudoarthrosis or non-unions of long bones, limb lengthening by epiphyseal distraction osteogenesis including bone transport
- · Correction of bony or soft tissue deformities
- · Correction of segmental or nonsegmental bony or soft tissue defects
- · Use on long bones including the tibia and fibula
- · Use with or without IM nail in the ankle in Charcot patients
Type of Use (Select one or both, as applicable)
> Prescription Use (Part 21 CFR 801 Subpart D)
__ Over-The-Counter Use (21 CFR 801 Subpart C)
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## K180832 Page 1 of 3
1023 Cherry Road Memphis, TN 38117
901 867 9971
800 238 7117
wright.com
#### 510(K) SUMMARY
In accordance with the Food and Drug Administration Rule to implement provisions of the Safe Medical Devices Act of 1990 and in conformance with 21 CFR 807.92, this information serves as a Summary of Safety and Effectiveness for the use of the SALVATION™ External Fixation System.
| (a)(1). Submitted By: | Wright Medical Technology, Inc.<br>1023 Cherry Road<br>Memphis, TN 38117 |
|------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Date: | March 29, 2018 |
| Contact Person: | Rachel Roberts<br>Regulatory Affairs<br>Specialist<br>Office - (901) 867-9708<br>Fax - (901) 867-4190 |
| (a)(2). Proprietary Name: | SALVATION External Fixation System |
| System Common Name: | External Fixation Device |
| Classification Name and Reference: | 21 CFR 888.3030 - Class II |
| Device Product Code, Device Panel: | KTT, Orthopedic |
| (a)(3). Predicate Device: | K052005: SIDEKICK™ Circular Fixator<br>(formerly R&R External Fixator<br>System)<br>K130044: SIDEKICK™ EZ FRAME Fixator<br>K162033: SALVATION™ External<br>Fixation System |
### (a)(4). Device Description
The current SALVATION External Fixation System consists of rings, wires, wire fixation bolts, wire posts with bolts, half pin cubes with bolts, bushings, rocker plates with outsoles, insoles, etc. The Proximal Tibial Ring, Distal Tibial Ring and Foot Ring are designed with slots. This slot feature allows the fixation elements to slide to the desired position as opposed to the user having to handle small components (wire bolt and nut) to attach to the rings or taking the bolt out and placing it into a different hole. The system also includes tab rings with fixation holes to be used based on surgeon preference. As cleared in 510(k) K162033, the SALVATION External Fixation System is designed so that the SIDEKICK Circular and SIDEKICK EZ FRAME™ components are compatible and can be used with the SALVATION External Fixation system.
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#### (a)(5). INTENDED USE
Wright's SALVATION™ External Fixation System is intended for:
- . Fusions of the foot including:
- o Triple arthrodesis
- Isolated hindfoot arthrodesis O
- Midfoot arthrodesis O
- Joints involved include tibiotalar, subtalar, talonavicular, calcaneocuboid, pantalar, tibio-O talocalcaneus, naviculocuneiform, metatarsal cuneiform (first, second, third - e.g. Lapidus, TMT), metatarsal cuboid
- . Treatment of fractures including:
- Treatment of LisFranc fracture/dislocations in diabetic and Charcot neuropathy patient O
- Fractures and/or comminuted fractures (open or closed) of the calcaneus, talus, cuboid, O navicular, cuneiforms, and/or metatarsals (including Jones fractures), ankle, and distal tibia
- Additional fixation adjunct to internal fixation of the distal tibia, calcaneus, talus, O navicular, cuboid, cuneiforms, and/or metatarsals in patients with significant comorbidities (i.e. diabetes) that may preclude use of isolated internal fixation
- Reconstruction of deformities including:
- O Neuropathic deformities
- Charcot reconstruction with or without corrective osteotomies O
- o Diabetic Charcot Reconstruction
- O Prevention and treatment of contracture of joints and tendons in equinus
- Treatment of infected unions, nonunions, or malunions
- . Offloading and or immobilization of ulcers and/or wounds of the foot or ankle
- . Stabilization associated with tendon or ligament surgeries. Tendon lengthening, repairs and transfers both deep and or superficial around the foot and ankle including posterior tibial, tibialis anterior, flexor digitorum longus, achilles, flexor hallucis longus, peroneus brevis, peroneus longus, extensor hallucis longus, extensor digitorum longus
- . Tumor and neoplasm resection and reconstruction
- . Stabilization associated with rotation flaps, free flaps, muscle flaps, advancement flaps, fasciocutaneous flap, split thickness skin grafting, biological graft alternatives
- . Pseudoarthrosis or non-unions of long bones, limb lengthening by epiphyseal or metaphyseal distraction osteogenesis including bone transport
- . Correction of bony or soft tissue deformities
- Correction of segmental or nonsegmental bony or soft tissue defects .
- . Use on long bones including the tibia and fibula
- Use with or without IM nail in the ankle in Charcot patients
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#### (a)(6). Technological Characteristics Comparison
The subject devices included in the SALVATION™ External Fixation System Line Extension are technologically substantially equivalent to predicate devices in material, design features, size, and mechanical strength. The fundamental scientific technology of the modified device has not change relative to the predicate devices.
#### (b)(1). Substantial Equivalence - Non-Clinical Evidence
Mechanical Pull-out testing, Finite Element Analysis, and Engineering analysis demonstrated substantial equivalence comparing each modified component to the predicate components. The indications for use of the subject SALVATION™ External Fixation System are identical to the predicate SALVATION™ External Fixation System K162033.
#### (b)(2). Substantial Equivalence – Clinical Evidence
N/A
#### (b)(3). Substantial Equivalence - Conclusions
The design characteristics of the subject system do not raise any new types of questions of safety or effectiveness. From the evidence submitted in this 510(k), the subject devices can be expected to perform at least as well as the predicate devices.
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1. Search: exact and fuzzy
Type a phrase like "coronary artery calcification" into the search box. You get two kinds of results. Exact results match the literal phrase — prefix searches work ("coronary artery calcificati") but suffix searches do not. Fuzzy results match on the meaning and intent of your phrase rather than the exact words, and are sorted by relevance score. Hover over the Exact or Fuzzy badge on any row to see exactly why it matched.
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Exact matches on the literal phrase (prefix search works, suffix does not). Fuzzy matches on the meaning and intent of the phrase rather than the exact words. Hover over the badge on any row to see why it matched.
You search "coronary artery calcification" and want only software devices with AI. What two filters do you apply?
Narrow by SaMD (software-only devices), then narrow by AI/ML (devices with AI).
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Scroll right in the results table. The intended use is extracted for you — no need to open the PDF. The device story gives a high-level snapshot of what the device does and how it's used. The AI Performance sub-table shows each output name, acceptance criteria, observed values, and development/test dataset descriptions — the same format Innolitics uses for regulatory strategy outputs, and the fastest high-level fingerprint of an AI device. It is AI-generated but has been very reliable in practice.
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Scroll right in the search results table. The intended use column is extracted for you; no need to dig into the 510(k) summary PDF.
What does the AI Performance sub-table show, and why is it useful?
Output name, acceptance criteria, observed values, development dataset description, and test dataset description. It's the same format we use for regulatory strategy output and Fast 510(k) input, and the fastest high-level fingerprint of an AI device. AI-generated but reliable in practice.
3. Judging fuzzy relevance
Fuzzy results trail off in relevance as you scroll. Use three signals to decide how far down to go: the fuzzy badge explanations, the intended use column, and whether your target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, you're past the relevant zone. A top hit with a low score (~0.4) and a stretched explanation is a hint the closest predicates are far away — the project may be headed for De Novo. Note the fuzzy search is a pattern match: it doesn't handle negation ("not") well, and hardware devices can appear — filter by SaMD/AI ML to cut them.
How do you judge how far down fuzzy search results to go?
Use the relevancy signals: the fuzzy badge explanations, the intended use column, and whether the target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, results are trailing off in relevancy.
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Reading rule for every project: how many summaries do you read in full?
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5. Side-by-side comparison
Select multiple rows in the results table (aim for under ~10), then open the PDF Viewer tab. Ask one question — it goes to all selected devices in parallel, each with citations. This is the fastest way to compare and contrast devices: training data, PCCP scope, how they handled adding new scanners, and so on.
What does the side-by-side PDF viewer mode do?
Select multiple devices, open the PDF viewer tab, and ask one question (e.g., "Describe the training data"). It queries all selected devices simultaneously with citations, so you can compare and contrast quickly.
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What can you do from the regulations tree view?
Browse product codes and regulation numbers, read the identification text and special controls, browse sibling product codes, open device PDFs on the right, and search by product code or regulation number at the top of the tree.
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Click Show Chart and segment by regulation number (or product code) to see which regulations dominate your result set. Clicking a regulation takes you into the regulations tree. Great for spotting that most matches are, say, hardware laparoscopic devices — a cue to go back and filter.
How do you see which regulations dominate a search result set?
Click "Show Chart" and segment by Regulation Number. Clicking a regulation takes you to the regulations tree.
9. The predicate graph
Open the Predicates tab for a family-tree view of predicate relationships. Click a node to trace its parents and children; selections from search carry over pre-selected. Commonly predicated devices are worth reading — a lot of people predicated them for a reason. The visual lineage is also handy on client calls, e.g. to show how a predicate family evolved and justify why your predicate still holds.
In the predicate graph, why are commonly predicated devices worth reading?
A lot of people predicated them for a reason. Clicking a node traces parents and children, and selections from search carry over pre-selected.
10. Embeddings: the galaxy map
The Embeddings tab plots every matching document in a 2-D "galaxy map" where semantically similar devices cluster together. Hover or click clusters to explore, and let AI label the clusters for you. Embeddings beat product codes for grouping: two devices can carry different product codes (LLZ vs. QIH) yet do the same thing — the embedding captures the meaning of the intended use and device story. This is also exactly how retrieval-augmented generation (RAG) works under the hood, and it makes a great visual on client calls.
Try it yourself
Head to the search page and work through a few of these AI/ML fuzzy searches to build intuition: perivascular fat on CT · aortic valve calcification opportunistic screening on noncontrast CT · breast cancer prediction on digital pathology slides · autism detection · gestational age prediction · a hearing aid that can also detect a pulse · foundation model based analysis of ECG · large language models · penetration test. Watch how the relevance scores, intended use, and AI Performance tables tell you when results stop being meaningful.