K162656 · Tva Medical, Inc. · GEI · Nov 10, 2016 · General, Plastic Surgery
Device Facts
Record ID
K162656
Device Name
ESU-1 Electrosurgical Generator
Applicant
Tva Medical, Inc.
Product Code
GEI · General, Plastic Surgery
Decision Date
Nov 10, 2016
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 878.4400
Device Class
Class 2
Attributes
Therapeutic
Indications for Use
The ESU-1 Electrosurgical Generator is used to deliver RF energy via an assortment of surgical devices to cut and coagulate different kinds of tissue.
Device Story
High-frequency isolated electrosurgical generator; delivers RF energy to cut/coagulate tissue via surgical devices. Features monopolar/bipolar outputs; includes 'Cut T' mode with user-selectable timing (0.1–3.0s) to automatically cease RF activation. Operated by clinicians in surgical settings. Device consists of generator, power cord, front panel (wattage controls, LED display, indicators), and back panel (footswitch ports, volume). Return electrode sensing supports split or solid electrodes. Output affects tissue via thermal effect; provides surgical cutting/coagulation. Benefits patient through precise tissue management during procedures.
Clinical Evidence
Bench testing only. Testing included mechanical, inspection, and electrical verification, shipping studies, and FPGA validation for main and display boards. Compliance with IEC 60601-1 (safety), IEC 60601-2 (EMC), and IEC 60601-2-2 (electrosurgical equipment) was demonstrated.
Technological Characteristics
High-frequency isolated RF generator. Monopolar and bipolar output modes. Features return electrode monitoring system. Dimensions, weight, and internal components (PCBs) identical to predicate. Non-sterile. Software level of concern: moderate. Standards: IEC 60601-1, IEC 60601-2, IEC 60601-2-2.
Indications for Use
Indicated for cutting and coagulating tissue using RF energy delivered via surgical devices. No specific patient population, age, or gender restrictions provided.
Regulatory Classification
Identification
An electrosurgical cutting and coagulation device and accessories is a device intended to remove tissue and control bleeding by use of high-frequency electrical current.
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Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
November 10, 2016
TVA Medical, Inc. Ms. Katherine Kumar VP of Regulatory & Clinical Affairs 7000 Bee Caves Rd., Suite 250 Austin, Texas 78746
Re: K162656
Trade/Device Name: ESU-1 Electrosurgical Generator Regulation Number: 21 CFR 878.4400 Regulation Name: Electrosurgical cutting and coagulation device and accessories Regulatory Class: II Product Code: GEI Dated: September 21, 2016 Received: September 23, 2016
Dear Ms. Kumar:
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 of medical devicerelated 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.
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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" (21 CFR 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,
# Jennifer R. Stevenson -A
For Binita S. Ashar, M.D., M.B.A., F.A.C.S. Director Division of Surgical Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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### DEPARTMENT OF HEALTH AND HUMAN SERVICES Food and Drug Administration
### Indications for Use
Form Approved: OMB No. 0910-0120 Expiration Date: January 31, 2017 See PRA Statement below.
510(k) Number (if known) K162656
Device Name ESU-1 Electrosurgical Generator
Indications for Use (Describe)
The ESU-1 Electrosurgical Generator is used to deliver RF energy via an assortment of surgical devices to cut and coagulate different kinds of tissue.
| Type of Use (Select one or both, as applicable) | <span> <span style="text-decoration: underline;"> Prescription Use (Part 21 CFR 801 Subpart D) </span> </span> <span> <span style="text-decoration: underline;"> Over-The-Counter Use (21 CFR 801 Subpart C) </span> </span> |
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## 510(K) SUMMARY (K162656)
## ESU-1 Electrosurgical Generator
### 510(k) Owner
TVA Medical, Inc. 7000 Bee Caves Rd., Suite 250 Austin, TX 78746
### Official Correspondent
Katherine Kumar, PhD, RAC TVA Medical, Inc. VP of Regulatory & Clinical Affairs 7000 Bee Caves Rd., Suite 250 Austin, TX 78746
Email: kkumar@tvamedical.com Phone: 612-716-5578 (cell) Fax: 612-435-0292
### Date Prepared: September 8, 2016
### Subject Device Name
| Trade Name | ESU-1 Electrosurgical Generator |
|----------------------|---------------------------------------------------------------------------------------------------------|
| Common or usual name | Electrosurgical Generator |
| Classification name | Electrosurgical Cutting and Coagulation<br>Device and Accessories [21 CFR 878.4400<br>product code GEI] |
| Class | II |
| Classification Panel | General and Plastic Surgery (79) |
### Predicate Device
Bovie® IDS-310 Electrosurgical Generator [Bovie Medical Corporation; K134054]
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### Device Description
The ESU-1 Electrosurgical Generator is a high frequency isolated generator that utilizes electrical current via an assortment of surgical devices to cut and coagulate different types of tissue. The ESU-1 Electrosurgical Generator features cutting up to 300 watts with 2 cut modes, including "Cut T", a blend mode with 4 levels, 3 coagulation modes and 4 bipolar modes with Auto Bipolar option. "Cut T" mode is a new feature that includes a timing feature which automatically ceases RF activation after a user selectable period of time that can be altered between 0.1 and 3.0 seconds. The RF activation for Cut T mode is initially pre-set at 2 seconds (Note: if the operator changed these settings, the generator will powerup with the mode and setting in which the operator last activated the generator). The generator offers 2 monopolar headpiece outputs, monopolar foot controlled output, bipolar handpiece output, and bipolar foot controlled output. The generator has a return electrode sensing feature allows the user to use either a split or solid return electrode site. The padsensing feature allows the user to use either a split or solid return electrode.
The device consists of a generator and power cord and is packaged with a User's Guide in a cardboard shipping box with protective foam inserts. The main device components are a front panel containing the power button, wattage selection buttons, LED numeric display, alarm and return electrode indicator lights, and connector ports for accessories, a back panel consisting of footswitch ports, volume controls, a power cord outlet and fuse, and internal components (printed circuit boards, speakers, cabling).
### Indications for Use
The ESU-1 Electrosurgical Generator [ESU-1] is used to deliver RF energy via an assortment of surgical devices to cut and coagulate different kinds of tissue.
### Comparison of Indications for Use to Predicate Device
The ESU-1 has the same indications for use as the Bovie IDS-310.
### Comparison of Technological Characteristics to Predicate Device
The ESU-1 has the following similarities to the Bovie IDS-310:
- Both devices have the same intended use/indications for use
- . Each device is identical in size, weight and construction.
- Each device uses high frequency RF current to deliver a desired clinical effect.
- Each device offers monopolar and bipolar output modes.
- Each device offers the same waveforms, output frequencies and maximum output . power for all monopolar modes.
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- . Each device offers the same waveforms, output frequencies and maximum output power for Micro. Standard and Bovie Bipolar modes.
- Each device offers the AutoBipolar Feature.
- Each device offers the same Return Electrode Monitoring System.
- . Each device has the same chassis.
- Each device has the same interconnections, internal printed circuit boards and electrical components.
- . Each device has the same rated duty cycle.
The RF output for both generators is identical and both generators have identical modes with the exception that the ESU-1 has a "Cut T" mode, which includes a timing feature which automatically ceases RF activation after a user selectable period of time that can be altered between 0.1 and 3.0 seconds. The RF activation for Cut T mode is initially pre-set at 2 seconds. The Cut T mode replaces the Cut II function on the IDS-310. The RF output for both generators is identical.
### Performance testing
The software for the ESU-1 has been verified and validated based on its moderate level of concern. The ESU-1 complies with IEC60601-1 (third edition), IEC60601-2 (electromagnetic compatibility), and IEC60601-2-2 standard for the safety of electrosurgical equipment. Bench testing was performed to demonstrate that the generator met its design specifications. The testing consisted of Mechanical Verification Testing, Inspection Verification Testing, Electrical Verification Testing, Shipping Study, FPGA Validation for Main Board, FPGA Validation for Display Board and was conducted on the ESU-1 or devices representative of its design.
The results from these tests demonstrate that the technological characteristics and performance criteria of the ESU-1 are adequate for the intended use of the device and that the device can perform in a manner equivalent to devices currently on the market with the same intended use.
### Sterilization
The ESU-1 Electrosurgical Generator is a non-sterile device.
### Biocompatibility
The ESU-1 Electrosurgical Generator is not a patient contacting device.
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### Conclusion
The ESU-1 met all the predetermined acceptance criteria of design verification and validation as specified by applicable standards, guidance, test protocols and/or customer inputs. The ESU-1 is substantially equivalent to legally marketed predicate devices.
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.