PROVOX NID VOICE REHABILITATION SYSTEM, MODEL REF 7101 TO 7134
K043138 · Atos Medical AB · EWL · Nov 22, 2004 · Ear, Nose, Throat
Device Facts
Record ID
K043138
Device Name
PROVOX NID VOICE REHABILITATION SYSTEM, MODEL REF 7101 TO 7134
Applicant
Atos Medical AB
Product Code
EWL · Ear, Nose, Throat
Decision Date
Nov 22, 2004
Decision
SESE
Submission Type
Special
Regulation
21 CFR 874.3730
Device Class
Class 2
Attributes
Therapeutic
Indications for Use
The Provox® NID™ Voice Rehabilitation System is intended for use in prosthetic voice rehabilitation after total laryngectomy only by patients who have been trained in the use of the device and, as assessed by the clinician who prescribes the device, have demonstrated the ability to understand and consistently follow the Instructions for Use without clinician supervision. The Provox NID is intended for single patient use.
Device Story
Non-indwelling (standard) voice prosthesis; includes safety medallion, insertion tool, and accessories. Placed in surgically created tracheoesophageal fistula; diverts air from trachea to esophagus to enable voicing. Used by patients post-total laryngectomy; requires clinician prescription and patient training. Patient self-manages device insertion and use. Benefits include restoration of speech post-laryngectomy.
Clinical Evidence
Clinical trial conducted at Princess Alexandra Hospital, Brisbane, Australia, with 14 patients previously using Blom-Singer Low Pressure Voice Prosthesis. Results confirmed device performance satisfies design intent.
Technological Characteristics
Non-indwelling voice prosthesis available in 17 and 20 French diameters and 6 lengths (6-18 mm). Includes safety medallion and reusable inserter. Design based on Provox1, Provox2, and ActiValve. Mechanical valve mechanism.
Indications for Use
Indicated for prosthetic voice rehabilitation in patients post-total laryngectomy who are trained, capable of understanding, and able to follow instructions for use without clinician supervision.
Regulatory Classification
Identification
A laryngeal prosthesis (Taub design) is a device intended to direct pulmonary air flow to the pharynx in the absence of the larynx, thereby permitting esophageal speech. The device is interposed between openings in the trachea and the esophagus and may be removed and replaced each day by the patient. During phonation, air from the lungs is directed to flow through the device and over the esophageal mucosa to provide a sound source that is articulated as speech.
Special Controls
*Classification.* Class II (special controls). The device, when it is a voice amplification device, is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 874.9.
{0}------------------------------------------------
Image /page/0/Picture/1 description: The image shows the text "Premarket Notification 510(k) Provox® NID™ Voice Rehabilitation System". The text is left-aligned and appears to be the title or heading of a document. The text is written in a simple, sans-serif font and is easy to read.
Image /page/0/Picture/2 description: The image shows the logo for Atos Medical. The word "ATOS" is in large, bold, black letters. Below the word "ATOS" is a black line, and below the line is the word "MEDICAL" in a smaller font.
Page 1 of 3
## 6.4 510(k) Summary of Safety and Effectiveness
| Date | Monday, November 08, 2004 |
|----------------------------|----------------------------------------------------------------------------------------|
| 510(k) Number | K043138 (To be assigned) |
| Submitter's Name | Atos Medical AB<br>P O Box 183<br>Kraftgatan 8<br>SE-242 22 Hörby<br>Sweden |
| | Telephone: Int+46-415-198 00<br>Fax: Int+46-415-198 98<br>E-mail: info@atosmedical.com |
| Contact Person | Eddy Åberg<br>Director of Quality & Regulatory Affairs |
| Trade or Proprietary Name | Provox® NID™ Voice Rehabilitation System |
| Common or Usual Name | Voice Prosthesis |
| Device Classification Name | Laryngeal prosthesis (Taub design) |
| Product Code | EWL |
{1}------------------------------------------------
Image /page/1/Picture/0 description: The image shows the text "Premarket Notification 510(k) Provox® NID™ Voice Rehabilitation System". The text is arranged in three lines, with the first line indicating the type of notification, the second line indicating the brand name, and the third line indicating the purpose of the system. The text is written in a clear and legible font.
Image /page/1/Picture/1 description: The image shows the logo for Atos Medical. The word "ATOS" is in large, bold, sans-serif font. Below the word "ATOS" is a horizontal line, and below the line is the word "MEDICAL" in a smaller, sans-serif font.
Page 2 of 3
| Predicate<br>Devices | Provox®2 Voice Prosthesis System |
|----------------------|-------------------------------------------|
| | 510(k) Number : K971244 |
| | Atos Medical AB, Sweden |
| | Blom-Singer Low Pressure Voice Prosthesis |
| | 510(k) Number: K821568 |
| | Inhealth Technologies, USA |
- The Provox NID voice rehabilitation system is intended for use in prosthetic voice Intended Use rehabilitation after total laryngectomy only by patients who have been trained in the use of the device and, as assessed by the clinician who prescribes the device, have demonstrated the ability to understand and consistently follow the Instructions for Use without clinician supervision.
The Provox NID is intended for single patient use.
The Provox® NID™ Rehabilitation System is a non-indwelling (Standard) voice Description of prosthesis equipped with a safety medallion, an insertion tool and some the Device accessories.
Image /page/1/Picture/7 description: The image shows two medical instruments. The first instrument is a laryngoscope, which is used to view the larynx. It has a handle and a blade with a light at the end. The second instrument is a tracheostomy tube holder, which is used to secure a tracheostomy tube in place. The holder has a strap that goes around the neck and a clamp that attaches to the tube.
The Provox NID voice prosthesis is available in two outer diameters (17 and 20 French) and six different lengths, (6, 8, 10, 12, 14 and 18 mm). Each prosthesis
{2}------------------------------------------------
Image /page/2/Picture/0 description: The image shows the logo for Atos Medical. The word "ATOS" is in large, bold, sans-serif font, with a thick line underneath. Below the line, the word "MEDICAL" is printed in a smaller, sans-serif font.
Page 3 of 3 comes individually packed with a re-usable inserter. The design of the device is based on the indwelling voice prostheses Provox1, Provox2 and ActiValve. Performed by Princess Alexandra Hospital, Brisbane, Australia. The Human Clinical Test Research Ethics Committee of the hospital approved the study. All of the patients were using the Blom-Singer Low Pressure Voice Prosthesis prior to this study. In total, 14 patients participated in this clinical trail. Test results support the conclusion that the actual device performance satisfies the design intent. The proposed device is substantially equivalent to the legally marketed predicate Technological Characteristics devices in design, intended use and materials of manufacturer. The Provox® NID™ Rehabilitation System is provided for the same indications for use as its predicate devices, the Provox®2 Voice Prosthesis System and the Blom-Singer Low Pressure Voice Prosthesis. All three devices are designed to provide voicing after total laryngectomy. The devices are placed in a surgically created fistula between the trachea and esophagus in order to divert air through the
prosthesis valve to created voicing.
Functional equivalency test have been performed on the three prostheses, which demonstrate the equivalency of the valve performance with the three designs.
{3}------------------------------------------------
Image /page/3/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a circular seal with the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" arranged around the perimeter. Inside the circle is an abstract symbol resembling an eagle or bird in flight, composed of three curved lines.
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
NOV 2 2 2004
Atos Medical AB Attn: Eddy Åberg P O Box 183 Kraftgatan 8 SE-242 22 Hörby Sweden
Re: K043138
: 11015150
Trade/Device Name: Provox® NID™ Voice Rehabilitation System Regulation Number: 21 CFR 874.3730 Regulation Name: Laryngeal Prosthesis (Taub design) Regulatory Class: II Product Code: EWL Dated: November 8, 2004 Received: November 12, 2004
Dear Ms. Åberg:
We have reviewed your Section 510(k) premarket notification of intent to market the device we nave rothered your because in the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce ass baced in 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 mat (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.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to such additional controls. Existing major regulations affecting your device can be fray of 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); good manufacturing practice requirements as set 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.
{4}------------------------------------------------
Page 2 - Ms. Åberg
This letter will allow you to begin marketing your device as described in your Section 510(k) premarket notification. The FDA finding of substantial equivalence of your device to a legally marketed predicate device results in a classification for your device and thus, permits your device to proceed to the market.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Office of Compliance at (301) 594-4613. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR Part 807.97). 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) 443-6597 or at its Internet address http://www.fda.gov/cdrh/dsma/dsmamain.html
Sincerely yours,
A kalpi korenthal
A. Ralph Rosenthal, M.D Director Division of Ophthalmic and Ear, Nose and Throat Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
{5}------------------------------------------------
Image /page/5/Picture/1 description: The image shows the logo for ATOS MEDICAL. The word "ATOS" is in large, bold, sans-serif font. A horizontal line is directly below the word "ATOS", and the word "MEDICAL" is below the line. The word "MEDICAL" is in a smaller, sans-serif font.
## 6.3 Indications for Use
| Applicant: | Atos Medical AB, Sweden | | |
|----------------|------------------------------------------|------------------|--|
| 510(k) Number: | K043138 | (To be assigned) | |
| Device Name: | Provox® NID™ Voice Rehabilitation System | | |
## Intended Use:
The Provox® NID™ Voice Rehabilitation System is intended for use in prosthetic voice rehabilitation after total laryngectomy only by patients who have been trained in the use of the device and, as assessed by the clinician who prescribes the device, have demonstrated the ability to understand and consistently follow the Instructions for Use without clinician supervision.
The Provox NID is intended for single patient use.
## PLEASE DO NOT WRITE BELOW THIS LINE CONTINUE ON ANOTHER PAGE IF NEEDED
Concurrence of CDRH, Office of Device Evaluation
**Prescription Use** √
or
(Per 21 CFR 801.109)
**Over-the-counter**
(Division Sign-Off) Division of Onhthalmic Ear, Nose and Throat Davises
510(k) Number: K043138
6-13
Phone +46 415 198 00 Fax +46 415 198 98 E-mail info@atosmedical.com Web www.atosmedical.com
Org. nr. 556268-7607 Vat No. SE556268760701
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.