K974232 · Gyrus Ent LLC · EQJ · Jan 12, 1998 · Ear, Nose, Throat
Device Facts
Record ID
K974232
Device Name
ESSENTIAL SHAVER SYSTEM
Applicant
Gyrus Ent LLC
Product Code
EQJ · Ear, Nose, Throat
Decision Date
Jan 12, 1998
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 874.4140
Device Class
Class 1
Attributes
Therapeutic
Indications for Use
The ESSential Shaver System is presently intended for the removal of soft tissue and small amounts of bony obstruction secondary to chronic sinus disease. The modification to this system would expand its intended use to the cutting and removal of bone and tissue in general ENT, head & neck, and otoneurologic procedures. Otology procedures could include mastoidectorny and mastoidotomy. Sinus applications would embody septoplasty and procedures such as the removal of septal spurs, polypectomy, antrostomy, ethmoidectomy/sphenoethmoidectomy, frontal sinus trephination and irrigation, frontal sinus drill out, endoscopic DCR and transspehnoidal procedures. Nasopharyngeal/Laryngeal procedures would comprise adenoidectomy, laryngeal lesion debulking and tonsillectomy. Head and neck procedures would encompass soft tissue shaving, rhinoplasty (narrowing of the bony vault and revision of the bony pyramid), removal of fatty (adipose) tissue (lipo debridement) in the maxillary and mandibular regions of the face, and acoustic neuroma removal at the cerebellopontine angle.
Device Story
Electrical surgical shaver system; used for cutting/removal of bone and soft tissue in ENT, head/neck, and otoneurologic procedures. Device consists of handpiece and shaver blades/burrs; operates via electric power. Used by surgeons in clinical/OR settings. Provides mechanical tissue/bone resection; output is physical removal of target anatomy. Benefits include expanded surgical utility for diverse procedures including mastoidectomy, rhinoplasty, and acoustic neuroma removal.
Clinical Evidence
No clinical data provided; bench testing only.
Technological Characteristics
Electrical surgical shaver; handpiece and burr/blade assembly. Designed to meet UL 2601-1 and IEC 601-1-2 safety standards. Powered by electric source.
Indications for Use
Indicated for patients requiring cutting and removal of bone and soft tissue in ENT, head and neck, and otoneurologic procedures, including mastoidectomy, mastoidotomy, septoplasty, polypectomy, antrostomy, ethmoidectomy, frontal sinus procedures, endoscopic DCR, transsphenoidal procedures, adenoidectomy, laryngeal lesion debulking, tonsillectomy, rhinoplasty, lipo debridement, and acoustic neuroma removal.
Regulatory Classification
Identification
An ear, nose, and throat bur is a device consisting of an interchangeable drill bit that is intended for use in an ear, nose, and throat electric or pneumatic surgical drill (§ 874.4250) for incising or removing bone in the ear, nose, or throat area. The bur consists of a carbide cutting tip on a metal shank or a coating of diamond on a metal shank. The device is used in mastoid surgery, frontal sinus surgery, and surgery of the facial nerves.
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# Food and Drug Administration 510(k) Notification - Modified ESSential Shaver System November 11, 1997
Smith & Nephew, Inc.
2925 Appling Rd., Bartlett, TN 38133 U.S.A.
901-373-0200, Toll Free: 1-800-262-3540, Fax: 901-373-0220
For orders and order inquiries: 1-800-238-7538
# 510(k) Summary of Safety and Effectiveness
JAN 12 1998
K974232
| Trade Name: | ESSential® Shaver System<br>Modification to the ESSential® Sinus Shaver System (K953096) |
|----------------------|------------------------------------------------------------------------------------------------------------------------------------------------------|
| Common Name: | Electrical Surgical Shaver |
| Classification Name: | Surgical ENT drill, electric or pneumatic including handpiece and<br>ENT burr/blades |
| Official Contact: | Deborah Arthur<br>Group Manager<br>Regulatory & Quality Assurance<br>Smith & Nephew, INC.<br>ENT Division<br>2925 Appling Road<br>Bartlett, TN 38133 |
| Telephone: | (901) 373-0200 |
| Telefax: | (901) 373-0242 |
| Date Prepared: | November 11, 1997 |
The modified ESSential Shaver System is substantially equivalent to the Xomed XPSTM System used with the STRAIGHTSHOT™, PERFORMA™ and SKEETER™ handpieces and the ESSential Shaver System.
The ESSential Shaver System is presently intended for the removal of soft tissue and small amounts of bony obstruction secondary to chronic sinus disease. The modification to this system would expand its intended use to the cutting and removal of bone and tissue in general ENT, head & neck, and otoneurologic procedures. Otology procedures could include mastoidectorny and mastoidotomy. Sinus applications would embody septoplasty and procedures such as the removal of septal spurs, polypectomy, antrostomy, ethmoidectomy/sphenoethmoidectomy, frontal sinus trephination and irrigation, frontal sinus drill out, endoscopic DCR and transspehnoidal procedures. Nasopharyngeal/Laryngeal procedures would comprise adenoidectomy, laryngeal lesion debulking and tonsillectorny. Head and neck procedures would encompass soft
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# Food and Drug Administration 510(k) Notification - Modified ESSential Shaver System November 11, 1997
tissue shaving, thinoplasty (narrowing of the bony vault and revision of the bony pyramid), removal of fatty (adipose) tissue (lipo debridement) in the maxillary and mandibular regions of the face, and acoustic neuroma removal at the cerebellopontine angle.
The modified ESSential Shaver System that is described in this notification has the same technological characteristics, power modality and mode of operation as the originally cleared device. The broadened intended uses are substantially equivalent to the described predicate Xomed device. The modified ESSential Shaver System is designed to meet UL 2601-1 and IEC 601-1-2.
Differences between the modified ESSential Shaver System and the predicate devices should not affect the safety or effectiveness.
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Image /page/2/Picture/0 description: The image shows the seal of the Department of Health & Human Services USA. The seal features a stylized caduceus, a symbol often associated with medicine and healthcare, with three intertwined snakes and a staff. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES USA" is arranged in a circular pattern around the central emblem.
### DEPARTMENT OF HEALTH & HUMAN SERVICES
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
Deborah A. Arthur Group Manager Regulatory & O.A. Smith & Nephew, Inc. ENT Division 2925 Appling Road Barlett, TN 38133
Dear Ms. Arthur:
Re:
K974232 Electrical Surgical Shaver Dated: November 11, 1997 Received: November 12, 1997 Regulatory class: I 21 CFR 874.4140/Procode: 77 EQJ 21 CFR 874.4250/Procode: 77 ERL
JAN 1 2 1998
We have reviewed your Section 510(k) notification of intent to marker the device referenced above and we have decermined the device is substantially equivalent (for the indications for use stated in the enclosure) to devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (Act). You may, therefore, 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 (Premarket Approval), it may be subject to such additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 895. A substantially equivalent determination assumes compliance with the Current Good Manufacturing Practice requirement, as set forth in the Quality System Regulation (QS) for Medical Devices: General regulation (21 CFR Part 820) and that, through periodic OS inspections, the Food and Drug Administration (FDA) will verify such assumptions. Failure to comply with the GMP regulation may result in regulatory action. In addition, FDA may publish further announcements concerning your device in the Federal Register. Please note: this response to your premarket notification submission does not affect any obligation you might have under sections 531 through 542 of the Act for devices under Radiation Control provisions, or other Federal laws or regulations.
This letter will allow you to begin marketing your device as described in your 510(k) premarket notification. The FDA finding of substantial equivalence of your device to a legally marketed predication 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 and additionally 809.10 for in vitro diagnostic devices), please contact the Office of Compliance at (301) 594-4613. Additionally, for question and advertising of your device, please contact the Office of Compliance at (301) 594-4639. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR 807.97). Other general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers Assistance at its toll-free number (800) 638-2041 or - (301) 443-6597 or at its Internet address http://www.fda.gov/odrhdsmamain.html":- ------------------------------------------------------------------------------------------
Sincerely yours.
Wiliam Yri
Lillian Yin, Ph.D. Director, Division of Reproductive, Abdominal. Ear. Nose and Throat. and Radiological Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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## Food and Drug Administration 510(k) Notification - Modified ESSential Shaver System November 11, 1997
510(k) Number: Device Name: ESSential® Shaver System Modification to the ESSential® Sinus Shaver System (K953096)
### Intended Use:
The ESSential Shaver System is presently intended for the removal of soft tissue and small amounts of bony obstruction secondary to chronic sinus disease. The modification to this system would expand its intended use to the cutting and removal of bone and tissue in general ENT, head & neck, and otoneurologic procedures. Otology procedures could include mastoidectorny and mastoidotomy. Sinus applications would embody septoplasty and procedures such as the removal of septal spurs, polypectomy, antrostomy, ethmoidectomy/sphenoethmoidectomy, frontal sinus trephination and irrigation, frontal sinus drill out, endoscopic DCR and transspehnoidal procedures. Nasopharyngeal/Laryngeal procedures would comprise adenoidectomy, laryngeal lesion debulking and tonsillectomy. Head and neck procedures would encompass soft tissue shaving, rhinoplasty (narrowing of the bony vault and revision of the bony pyramid), removal of fatty (adipose) tissue (lipo debridement) in the maxillary and mandibular regions of the face, and acoustic neuroma removal at the cerebellopontine angle.
Prescription Use (Per 21 CFR 801.109)
David li. Seymore
---
Division Sign Off
Division Sion off Division of Reproductive, Abdominal, ENT, and Radiological Dev 510(k) Number
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.
