The Stryker Wireless Universal Footswitch System (SWUFS) is indicated for use with compatible endoscopic and general surgery devices. It will utilize a single footswitch to selectively control multiple devices, which typically each have their own dedicated footswitch. The system includes a wireless footswitch and receiver. The SWUFS will be an accessory to and provide footswitch input control for the Stryker Total Performance System, the SERFAS (Stryker Endoscopy Radio Frequency Ablation System) consoles, and the Valleylab Electrosurgical Generator.
Device Story
Wireless footswitch system; provides centralized input control for multiple endoscopic and general surgery devices; replaces individual dedicated footswitches. System consists of wireless footswitch and receiver. Used in operating room; operated by surgical staff. Eliminates floor clutter; improves OR safety and efficiency; reduces setup/cleanup time. Provides input signals to Stryker Total Performance System, SERFAS consoles, and Valleylab Electrosurgical Generator.
Clinical Evidence
No clinical data provided. Substantial equivalence is supported by bench testing and compliance with voluntary standards including IEC 60601-1 (General Safety), IEC 60601-1-1 (Medical Electrical Systems), IEC 60601-1-2 (Electromagnetic Compatibility), and IEC 60601-2-2 (High Frequency Surgical Equipment).
Technological Characteristics
Wireless footswitch and receiver system. Operates as an accessory to endoscopic and electrosurgical consoles. Complies with IEC 60601-1:1988/A1:1991/A2:1995, IEC 60601-1-1:2000, IEC 60601-1-2:2001, and IEC 60601-2-2:1998. Connectivity is wireless between footswitch and receiver; receiver connects to surgical consoles to provide input control.
Indications for Use
Indicated for use with compatible endoscopic and general surgery devices to provide centralized footswitch control for multiple surgical consoles.
Regulatory Classification
Identification
An endoscopic electrosurgical unit and accessories is a device used to perform electrosurgical procedures through an endoscope. This generic type of device includes the electrosurgical generator, patient plate, electric biopsy forceps, electrode, flexible snare, electrosurgical alarm system, electrosurgical power supply unit, electrical clamp, self-opening rigid snare, flexible suction coagulator electrode, patient return wristlet, contact jelly, adaptor to the cord for transurethral surgical instruments, the electric cord for transurethral surgical instruments, and the transurethral desiccator.
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DEPARTMENT OF HEALTH & HUMAN SERVICES
Public Health Service
Food and Drug Administration
10903 New Hampshire Avenue
Document Control Center – WO66-G609
Silver Spring, MD 20993-0002
Stryker Endoscopy
Mr. Michael Hilldoerfer
Design Engineer
5900 Optical Court
San Jose, CA 95138
JUL 27 2015
Re: K033135
Trade/Device Name: Stryker Wireless Universal Footswitch System
Regulation Number: 21 CFR 876.4300
Regulation Name: Endoscopic electrosurgical unit and accessories
Regulatory Class: II
Product Code: KNS, GCJ, HRX
Dated (Date on orig SE ltr): July 2, 2004
Received (Date on orig SE ltr): July 2, 2004
Dear Mr. Hilldoerfer,
This letter corrects our substantially equivalent letter of August 9, 2004.
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
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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 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 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/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 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/ResourcesforYou/Industry/default.htm.
Sincerely yours,
Benjamin R. Fisher -S
Benjamin R. Fisher, Ph.D.
Director
Division of Reproductive, Gastro-Renal, and Urological Devices
Office of Device Evaluation
Center for Devices and Radiological Health
Enclosure
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# Indications for Use
510(k) Number (if known): K033135
Device Name: Stryker Wireless Universal Footswitch System
Indications For Use:
The Stryker Wireless Universal Footswitch System (SWUFS) is indicated for use with compatible endoscopic and general surgery devices. It will utilize a single footswitch to selectively control multiple devices, which typically each have their own dedicated footswitch. The system includes a wireless footswitch and receiver. The SWUFS will be an accessory to and provide footswitch input control for the Stryker Total Performance System, the SERFAS (Stryker Endoscopy Radio Frequency Ablation System) consoles, and the Valleylab Electrosurgical Generator.
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)
Miriam C Provost
(Division Sign-Off)
Division of General, Restorative, and Neurological Devices
Page 1 of 1
510(k) Number K033135
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K033135 1/1
Stryker
Endoscopy
5900 Optical Court
San Jose, CA 95138
t: 408 754 2000 f: 408 754 2505
www.stryker.com
AUG - 9 2004
510(k) SUMMARY OF SAFETY AND EFFECTIVENESS
## Device Name
Classification Name:
- Endoscope and Accessories
- Bone Cutting Instruments and Accessories
- Electrosurgical Cutting and Coagulation Device and Accessories.
Common and Usual Name: Wireless Footswitch
Proprietary Name: Stryker Wireless Universal Footswitch System
This 510(k) summary of safety and effectiveness is being submitted in accordance with requirements of SMDA 1990.
The Stryker Wireless Universal Footswitch System (SWUFS) is substantially equivalent in safety and efficacy as the currently marketed Stryker Sldne™ System (K022393), Stryker SERFAS System (K991960), and Stryker Total Performance System (K991703).
The Stryker Wireless Universal Footswitch System (SWUFS) is indicated for use with compatible endoscopic and general surgery devices. It will utilize a single footswitch to selectively control multiple devices, which typically each have their own dedicated footswitch. The system includes a wireless footswitch and receiver. The SWUFS will be an accessory to and provide footswitch input control for the Stryker Total Performance System, the SERFAS (Stryker Endoscopy Radio Frequency Ablation System) consoles, and the Valleylab Electrosurgical Generator. The elimination of numerous wires and multiple footswitches within the Operating Room will improve safety and efficiency by centralizing all footswitch controls, uncluttering the OR floor, and reducing set-up and clean-up time.
The Wireless Universal Footswitch System meets the necessary requirements of the following voluntary standards: IEC 60601-1:1988, A1:1991, A2:1995 Medical Electrical Equipment Part 1: General Requirements for Safety; IEC 60601-1-1:2000 Collateral Standard: Safety Requirements for Medical Electrical Systems; IEC 60601-1-2:2001 Collateral Standard: Electromagnetic Compatibility – Requirements and Tests; IEC 60601-2-2:1998 Particular Requirements for the Safety of High Frequency Surgical Equipment.
The technological differences between the Stryker Wireless Universal Footswitch System and the predicate Stryker Sldne™ System, Stryker SERFAS System, and Stryker Total Performance System do not raise new issues of safety and efficacy of the predicate devices. Therefore, the Stryker Wireless Universal Footswitch System is substantially equivalent to the currently marketed devices.
Michael Hilldoerfer
Design Engineer
Stryker Endoscopy
Date: June 14, 2004
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.
