The DISTALOCK™ Femoral Intramedullary Nail System is indicated for use in orthopedic intramedullary nailing procedures: midline femoral fractures, femoral fractures in multiple trauma patients, fractures in the morbidly obese patient, fractures in osteoporotic bone or malunions and nonunions.
Device Story
DISTALOCK™ Femoral Intramedullary (IM) Nail System provides antegrade fixation for femoral fractures. System includes cannulated, thick-walled, mirror-finished titanium alloy nails with proximal/distal locking holes, locking screws, and end caps. Ancillary instrumentation includes a drill, drill motor assembly, hand controller, and control box. Used by orthopedic surgeons in clinical settings for fracture stabilization. The control system assists in the surgical procedure. Device provides mechanical stability to bone segments to facilitate healing.
Clinical Evidence
No clinical data. Evidence consists of bench testing, cadaver testing, and human factor analysis to verify performance and safety.
Technological Characteristics
Titanium alloy intramedullary nail; cannulated, thick-walled, mirror-finished. Includes drill, drill motor, and control box. Mechanical fixation via transverse locking screws. Biocompatible materials.
Indications for Use
Indicated for orthopedic intramedullary nailing procedures in patients with midline femoral fractures, multiple trauma, morbid obesity, osteoporotic bone, malunions, or nonunions.
Regulatory Classification
Identification
An intramedullary fixation rod is a device intended to be implanted that consists of a rod made of alloys such as cobalt-chromium-molybdenum and stainless steel. It is inserted into the medullary (bone marrow) canal of long bones for the fixation of fractures.
Predicate Devices
DGIMED Ortho Inc. Revolution™ Femoral Intramedullary Nail System (K091309)
Submission Summary (Full Text)
{0}------------------------------------------------
K100312(1/2)
## 10(k) Summa er 21 CFR 807.87
APR 2 0 2010
| Common/Usual Name: | Intramedullary Fixation Rod and Accessories |
|----------------------|-----------------------------------------------------------------------------------------------------|
| Product Trade Name: | DISTALOCK™ Femoral Intramedullary Nail System |
| Classification Name: | Rod, Fixation, Intramedullary and Accessories<br>Class II per 21 CFR § 888.3020<br>Product Code HSB |
| Predicate Device: | DGIMED Ortho Inc. Revolution™ Femoral Intramedullary<br>Nail System K091309 |
| Manufacturer: | DGIMED Ortho, Inc.<br>12400 Whitewater Drive, Suite 2010<br>Minnetonka, MN 55343 |
| Contact: | Scott Youngstrom<br>VP of Finance, Chief Operating Officer |
| Date Prepared: | February 3, 2010 |
#### Device Description:
The DISTALOCK™ Femoral Intramedullary (IM) Nail System permits an antegrade intramedullary approach for fixation of fractures of the femur. The DISTALOCK™ Femoral Intramedullary Nail is a closed section, cannulated, thick walled, mirror finished, curved intramedullary fixation device containing two proximal and two distal holes to accept locking screws which thread transversely though the proximal and distal third of the femur. The DISTALOCK™ Femoral IM Nail System includes the following components: DISTALOCK™ IM standard entry and trochanteric nails, locking screws and end caps made of titanium allov. The DISTALOCK™ Ancillary Instrumentation includes the DISTALOCK™ drill, the DISTALOCK™ Control System (which includes the control box, drill motor assembly and hand controller) and other disposable and reusable instruments.
#### Indications for Use:
The DISTALOCK™ Femoral IM Nail System is indicated for use in orthopedic intramedullary nailing procedures: midline femoral fractures, femoral fractures in multiple trauma patients, fractures in the morbidly obese patient, fractures in osteoporotic bone or malunions and nonunions.
Page 1
{1}------------------------------------------------
#### Substantial Equivalence Comparison:
Results of design verification and validation testing demonstrate that the device system as modified is as safe as the predicate device. The risk assessment results, together with the results of design verification and validation testing presented in this submission, confirm that the DISTALOCK™ Femoral IM Nail System, as modified, raises no new questions of safety or effectiveness compared to the predicate device. The DISTALOCK™ Femoral IM Nail System has been shown to be substantially equivalent to the legally marketed device for the purpose of 510(k) clearance.
#### Summary of Non-Clinical Testing:
The biological safety of the DISTALOCK™ Femoral IM Nail System was achieved through the selection of materials that demonstrated appropriate levels of biocompatibility. Human factor analysis was conducted and concluded that the DISTALOCK™ Femoral IM Nail System presented acceptable human factors features in both the functioning of the device and usage of the labeling. Bench testing and cadaver testing were conducted to ensure the performance and safety of the DISTALOCK™ Femoral IM Nail System and to demonstrate substantial equivalent to predicate device.
No new risks or efficacy concerns other than those identified with the predicate device were raised. Results of non-clinical testing demonstrated that the DISTALOCK ™ Femoral Intramedullary (IM) Nail System is safe and effective for its intended use.
#### Conclusion:
The DISTALOCK™ Femoral IM Nail System has similar intended use, material biosafety profile, and technical characteristics as the predicate device. Non-clinical testing was conducted to verify the safety and performance of the DISTALOCK™ Femoral IM Nail System and to ensure the device functions as intended and meets design specifications. As a result, the DISTALOCK™ Femoral IM Nail System has been demonstrated to be substantially equivalent to the predicate device and effective for its intended use.
{2}------------------------------------------------
Image /page/2/Picture/0 description: The image shows a partial view of a logo or emblem, featuring a stylized bird-like symbol on the left. To the right of the symbol, the word "DEPART" is visible, suggesting that the full text may be "DEPARTMENT". The overall design appears to be official, possibly representing a government or organizational entity.
### DEPARTMENT OF HEALTH & HUMAN SERVICES
Food and Drug Administration 10903 New Hampshire Avenue Document Control Room -WO66-G609 Silver Spring, MD 20993-0002
DGIMED Ortho, Inc. % Mr. Scott Youngstrom Vice President of Finance, Chief Operating Officer 12400 Whitewater Drive, Suite 2010 Minnetonka, Minnesota 55343
APR 2 0 2010
Re: K100312
Trade/Device Name: DISTALOCK™ Femoral Intramedullary Nail System Regulation Number: 21 CFR 888.3020 Regulation Name: Intramedullary Fixation Rod Regulatory Class: II Product Code: HSB Dated: March 30, 2010 Received: April 1, 2010
Dear Mr. Youngstrom:
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 (reporting of medical device-related adverse events) (21 CFR 803); good manufacturing practice requirements as set
{3}------------------------------------------------
Page 2 - Mr. Scott Youngstrom
forth in the quality systems (QS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please go to http://www.fda.gov/AboutFDA/CentersOffices/CDRH0ffices/ucm115809.htm for the Center for Devices and Radiological Health's (CDRH's) Office of Compliance. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR 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.
You may obtain other general information on your responsibilities under the Act from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address http://www.fda.gov/MedicalDevices/Resourcesfor You/Industry/default.htm.
Sincerely yours,
Darbar Buchm
Mark N. Melkerson Director Division of Surgical, Orthopedic, and Restorative Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
{4}------------------------------------------------
# INDICATIONS FOR USE STATEMENT
Current 510(k) Number: _ | | 003 | 2
Device Name:
DISTALOCK™ Femoral Intramedullary Nail System
Indications for Use:
The DISTALOCK™ Femoral Intramedullary Nail System is indicated for use in orthopedic intramedullary nailing procedures: midline femoral fractures, femoral fractures in multiple trauma patients, fractures in the morbidly obese patient, fractures in osteoporotic bone or malunions and nonunions.
Prescription Use ✓ (Part 21 CFR 801 Subpart D) AND/OR
Over-The-Counter Use (21 CFR 801 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
Onette for mxr
(Division Sign-Off)
Division of Surgical, Orthopedic, and Restorative Devices
510(k) Number K100312
Predicate graph will load when search results are available.
Embedding visualization will load when search results are available.
PDF viewer will load when search results are available.
Loading panels...
Select an item from Submissions
Click any panel, subpart, regulation, product code, or device to see details here.
Section Matches
Results will appear here.
Product Code Matches
Results will appear here.
Special Control Matches
Results will appear here.
Loading collections...
Loading
My Alerts
You will receive email notifications based on the filters and frequency you set for each alert.
Sort by:
Create Alert
Search Filters
Agent Token
Create a read-only bearer token for Claude, ChatGPT, or other agents that can call HTTP APIs.
Copy this now. It will not be shown again.
Connected apps
Apps you authorized through browser sign-in. Disconnecting revokes their access immediately.
Learn the FDA Browser
Two short videos show you everything — or skip straight to the written tutorial if you'd rather read. You can reopen this any time from the Tutorial button in the top bar.
Part 1 — Search, results, and everyday workflows 16 min
Part 2 — Embeddings: the galaxy map 3 min
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.
Use the checkboxes above the results to narrow: SaMD keeps only software-only devices, AI / ML keeps only devices with AI.
Exact vs. fuzzy search: what's the difference?
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).
2. The results table
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.
Where do you find a device's intended use without opening the PDF?
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.
4. Device detail page: chat and citations
Click a device name to open its detail page: device facts on the left, a chat window on the right. Ask something like "Describe the training data". The answer carries little citation bubbles — click one to jump to the highlighted passage in the source PDF, so you can verify every AI answer against the document. There's also a Download PDF button for sharing.
How do you verify an AI chat answer on the device detail page?
Click the citation bubbles to jump to the relevant highlight in the source document.
Reading rule for every project: how many summaries do you read in full?
At least the three most relevant 510(k) or De Novo summaries, in full. After that, use targeted chat questions to confirm your memory quickly. The tool supports this professional habit — it doesn't replace it.
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.
6. Collections
With rows selected, go to the Collections tab and create a labeled collection (e.g., "Cobb Angle Project"). Reload that selection any time — before a client call, pull up the collection and ask questions across all of its devices at once.
How do you save a set of selected devices for later use?
Select the rows, go to the Collections tab, and create a labeled collection (e.g., "Cobb Angle Project"). You can reload the selection anytime and carry it into the PDF viewer and other tabs that support selections.
7. Product codes and the regulations tree
Click a product code in the results to jump to it in the regulations tree — identification text, sibling product codes, and devices you can open in a PDF viewer on the right. Click a regulation number to see its identification, special controls, and related product codes. You can also search by product code or regulation number at the top of the tree. Always read the special controls if any exist for your device — it broadens your search and sharpens pre-kickoff research.
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.
8. Chart view
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.