The PROW FUSION-L is intended for spinal fusion procedures in skeletally mature patients with degenerative disc disease (DDD) at one or two contiguous levels from L2 through S1. DDD is defined as back pain of discogenic origin with degeneration of the disc confirmed by the history and radiographic studies. DDD patients may also have up to Grade I Spondylolisthesis or retrolisthesis at the involved levels. The patient may have had a previous non-fusion spinal surgery at the involved spinal level(s). Patients must have undergone a regimen of at least six (6) months of non-operative treatment prior to being treated with the PROW FUSION-L device is intended to be used with autogenous bone graft and a supplemental spinal fixation system that have been cleared for use in the lumbosacral spine (e.g. posterior pedicle screw and rod systems).
Device Story
PROW FUSION-L is an expandable lumbar interbody fusion device; provides structural stability post-discectomy. Device inserted into prepared disc space; features expandable mechanism to achieve final footprint in situ. Filled with autogenous bone graft to promote fusion. Superior/inferior surface protrusions grip vertebral endplates. Requires use of supplemental spinal fixation (e.g., posterior pedicle screw/rod systems). Used by surgeons in clinical settings. Benefits include restoration of disc space height and promotion of interbody fusion.
Clinical Evidence
Bench testing only. Mechanical testing performed per ASTM F2077 (static/dynamic axial compression, static/dynamic compression-shear) and ASTM F2267 (subsidence). Additional testing included expulsion and wear particle assessment. No clinical data provided.
Technological Characteristics
Materials: Titanium alloy (ASTM F136) and PEEK (ASTM F2026). Design: Expandable intervertebral body fusion device with surface protrusions for endplate fixation. Energy source: None (mechanical). Connectivity: None. Sterilization: Not specified. Software: None.
Indications for Use
Indicated for skeletally mature patients with degenerative disc disease (DDD) at one or two contiguous levels from L2 through S1, including those with up to Grade I Spondylolisthesis or retrolisthesis and those with previous non-fusion spinal surgery, following at least six months of failed non-operative treatment.
Regulatory Classification
Identification
An intervertebral body fusion device is an implanted single or multiple component spinal device made from a variety of materials, including titanium and polymers. The device is inserted into the intervertebral body space of the cervical or lumbosacral spine, and is intended for intervertebral body fusion.
Special Controls
*Classification.* (1) Class II (special controls) for intervertebral body fusion devices that contain bone grafting material. The special control is the FDA guidance document entitled “Class II Special Controls Guidance Document: Intervertebral Body Fusion Device.” See § 888.1(e) for the availability of this guidance document.(2) Class III (premarket approval) for intervertebral body fusion devices that include any therapeutic biologic (e.g., bone morphogenic protein). Intervertebral body fusion devices that contain any therapeutic biologic require premarket approval.
(c)
*Date premarket approval application (PMA) or notice of product development protocol (PDP) is required.* Devices described in paragraph (b)(2) of this section shall have an approved PMA or a declared completed PDP in effect before being placed in commercial distribution.
{0}------------------------------------------------
Image /page/0/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a circular border with the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" around the perimeter. Inside the circle is an abstract symbol that resembles a stylized human figure or a bird in flight.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
September 15, 2016
NLT SPINE Ltd. % John Smith, M.D., J.D. Partner Hogan Lovells US LLP 555 Thirteenth Street, NW Washington, District of Columbia 20004
Re: K153665
Trade/Device Name: PROW FUSION-L Regulation Number: 21 CFR 888.3080 Regulation Name: Intervertebral body fusion device Regulatory Class: Class II Product Code: MAX Dated: August 16, 2016 Received: August 16, 2016
Dear Dr. Smith:
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 Parts 801); medical device reporting (reporting of medical device-related adverse events) (21 CFR 803); good manufacturing practice requirements as set
{1}------------------------------------------------
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 contact the Division of Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm. 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 Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm.
Sincerely,
# Mark N. Melkerson -S
Mark N. Melkerson Director Division of Orthopedic Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
{2}------------------------------------------------
#### DEPARTMENT OF HEALTH AND HUMAN SERVICES Food and Drug Administration Indications for Use
510(k) Number (if known) K153665
K153665 Page 1 of 1
Form Approved: OMB No. 0910-0120
Expiration Date: January 31, 2017
See PRA Statement on last page
Device Name
#### PROW FUSION-L
Indications for Use (Describe)
The PROW FUSION-L is intended for spinal fusion procedures in skeletally mature patients with degenerative disc disease (DDD) at one or two contiguous levels from L2 through S1. DDD is defined as back pain of discogenic origin with degeneration of the disc confirmed by the history and radiographic studies. DDD patients may also have up to Grade I Spondylolisthesis or retrolisthesis at the involved levels. The patient may have had a previous non-fusion spinal surgery at the involved spinal level(s). Patients must have undergone a regimen of at least six (6) months of non-operative treatment prior to being treated with the PROW FUSION-L device is intended to be used with autogenous bone graft and a supplemental spinal fixation system that have been cleared for use in the lumbosacral spine (e.g. posterior pedicle screw and rod systems).
| Type of Use (Select one or both, as applicable) | |
|---------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------|
| <div> <span> Prescription Use (Part 21 CFR 801 Subpart D) </span> </div> | <div> <span> Over-The-Counter Use (21 CFR 801 Subpart C) </span> </div> |
| CONTINUE ON A SEPARATE PAGE IF NEEDED. | |
This section applies only to requirements of the Paperwork Reduction Act of 1995.
### *DO NOT SEND YOUR COMPLETED FORM TO THE PRA STAFF EMAIL ADDRESS BELOW.*
The burden time for this collection of information is estimated to average 79 hours per response, including the time to review instructions, search existing data sources, gather and maintain the data needed and complete and review the collection of information. Send comments regarding this burden estimate or any other aspect of this information collection, including suggestions for reducing this burden, to:
> Department of Health and Human Services Food and Drug Administration Office of Chief Information Officer Paperwork Reduction Act (PRA) Staff PRAStaff(@fda.hhs.gov
"An agency may not conduct or sponsor, and a person is not required to respond to, a collection of information unless it displays a currently valid OMB number."
{3}------------------------------------------------
Image /page/3/Picture/0 description: The image shows the logo for NLT Spine NonLinear Technologies. The logo features a stylized spine graphic in blue on the left, followed by the text "NLTSPINE" in a bold, sans-serif font. Below "NLTSPINE" is the text "NonLinear Technologies" in a smaller, lighter font. The overall design is clean and modern, suggesting a focus on spinal health and advanced technology.
## 510(k) SUMMARY
K153665 Page 1 of 3
#### NLT SPINE's PROW FUSION-L
As required by 21 C.F.R. § 807.92
#### Sponsor:
NLT SPINE Ltd. 6 Yad Harutzim St. Kfar-Saba Israel 4464103
#### Contact Person:
Eti Zinger VP Regulatory Affairs NLT SPINE Ltd. Tel: +972-3-6344514 Fax: +972-3-6341599 Eti.z@nlt-spine.com
Date Prepared: September 13, 2016
Name of Device: PROW FUSION-L
Common or Usual Name: Intervertebral body fusion device Classification Name: Intervertebral body fusion device 21 CFR §880.3080 Product Code MAX
#### Predicate Device
Primary predicate: Life Spine, Longbow Spacer System (K133717)
Additional predicates: NLT SPINE, PROW FUSION (K112359, K130254, K151654), PROW FUSION-V (K153786); Zimmer, BAK-L (K143297); Medtronic, CLYDESDALE® Spinal System (K132897); Stryker, ARIATM Spinal System (K143163); Globus, Caliber (K123231);TranS1 Lateral Intervertebral Fusion Device (K100210)
#### Intended Use / Indications for Use
The PROW FUSION-L is intended for spinal fusion procedures in skeletally mature patients with degenerative disc disease (DDD) at one or two contiguous levels from L2 through S1. DDD is defined as back pain of discogenic origin with degeneration of the disc confirmed by the history and
{4}------------------------------------------------
Image /page/4/Picture/0 description: The image contains the logo for NLT Spine NonLinear Technologies. The logo features a stylized spine graphic in light blue on the left. To the right of the spine graphic, the text "NLTSPINe" is displayed in a bold, dark gray font. Below "NLTSPINe", the words "NonLinear Technologies" are written in a smaller, lighter gray font.
K153665 Page 2 of 3
radiographic studies. DDD patients may also have up to Grade I Spondylolisthesis or retrolisthesis at the involved levels. The patient may have had a previous non-fusion spinal surgery at the involved spinal level(s). Patients must have undergone a regimen of at least six (6) months of non-operative treatment prior to being treated with the PROW FUSION-L device. The device is intended to be used with autogenous bone graft and a supplemental spinal fixation system that have been cleared for use in the lumbosacral spine (e.g. posterior pedicle screw and rod systems).
# Device Description
PROW FUSION-L is lumbar interbody fusion devices used to provide structural stability in skeletally mature individuals following discectomy. PROW FUSION-L is provided in different sizes to fit the anatomical needs of a wide variety of patients. PROW FUSION-L is manufactured from titanium alloy per ASTM F136 and Polyetheretherketone per ASTM F 2026. The device contains an expandable mechanism that allows it to achieve its final footprint in situ. PROW FUSION-L is to be filled with autogenous bone graft material.
Protrusions on the superior and inferior surfaces of each device grip the endplates of the adjacent vertebrae. The devices require the use of commercially available supplemental spinal fixation systems.
# Summary of Technological Characteristics
The PROW FUSION-L is an intervertebral body fusion device designed for placement into a prepared disc space following discectomy, maintain the height of the disc space and promote interbody fusion, all in a manner substantially similar to the predicate device. The placement technique of the PROW FUSION-L and the predicate is identical. Both the PROW FUSION-L and the predicate are manufactured from titanium alloy and PEEK. Both devices create a closed volume for bone graft between their members after expansion.
# Performance Data
Mechanical testing consisting of static and dynamic axial compression, static and dynamic compression-shear according to ASTM F2077 and subsidence according to ASTM F2267 was conducted in accordance with "Class II Special Controls Guidance Document: Intervertebral Fusion Device", June 12, 2007 to demonstrate substantial equivalence to the predicate. In addition, expulsion and wear particle assessment testing was also performed.
{5}------------------------------------------------
Image /page/5/Picture/0 description: The image shows the logo for NLT Spine, a company specializing in nonlinear technologies. The logo features a stylized spine graphic on the left, composed of blue squares arranged vertically. To the right of the spine graphic, the text "NLTSPINE" is displayed in a bold, sans-serif font, with "NonLinear Technologies" written below in a smaller font size. The overall design is clean and modern, conveying a sense of innovation and expertise in the field of spinal technology.
# Conclusions
K153665 Page 3 of 3
PROW FUSION-L is similar to the predicate with respect to technical characteristics, performance and intended use. The information provided within this premarket notification supports substantial equivalence of the subject PROW FUSION-L to the predicate device.
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.