K223373 · Aroa Biosurgery , Ltd. · BTA · Apr 7, 2023 · General, Plastic Surgery
Device Facts
Record ID
K223373
Device Name
Enivo™
Applicant
Aroa Biosurgery , Ltd.
Product Code
BTA · General, Plastic Surgery
Decision Date
Apr 7, 2023
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 878.4780
Device Class
Class 2
Attributes
Therapeutic
Indications for Use
Enivo™ is indicated for use to remove surgical and bodily fluids from a closed wound for hematoma and seroma prophylaxis following plastic surgery or other general surgeries where large flaps are formed.
Device Story
Enivo™ is a portable, battery-powered surgical drainage system for home and healthcare environments. It consists of a vacuum device unit and a removable silicone drainage catheter. The device provides continuous suction to remove surgical and bodily fluids from closed wounds. It is intended for hematoma and seroma prophylaxis following plastic or general surgeries where large flaps are formed. The system operates continuously for up to 30 days. Healthcare providers or patients use the device to manage post-surgical drainage, potentially reducing complications associated with fluid accumulation.
Clinical Evidence
No clinical data. Substantial equivalence demonstrated via bench testing only, including software verification/validation, electrical safety (IEC 60601-1 series), electromagnetic compatibility, biocompatibility (ISO 10993-1), vacuum pressure/flow rate performance, battery life, endurance runtime, package integrity (ASTM F1929, F2096, ISO 11607-1), seal strength (ASTM F88), bacterial filtration efficiency (ASTM F2101), sterilization (ISO 11135), bacterial endotoxins (ANSI/AAMI ST72), bioburden (ISO 11737-1), mechanical strength, and alarm system functionality.
Technological Characteristics
Powered suction pump; battery-powered vacuum unit with disposable exudate reservoir and silicone drainage catheter. Complies with IEC 60601-1, IEC 60601-1-2, IEC 60601-1-8, IEC 60601-1-11, AIM 7351731, ISO 10993-1, ISO 20697, ISO 11607-1, ISO 11135, ISO 11737-1. ASTM standards: F1929, F2096, F88/F88M, F2101, D4169. ANSI/AAMI ST72. Sterilization via ethylene oxide (EO).
Indications for Use
Indicated for patients undergoing plastic or general surgery involving large flaps; used for hematoma and seroma prophylaxis by removing surgical and bodily fluids from closed wounds.
Regulatory Classification
Identification
A powered suction pump is a portable, AC-powered or compressed air-powered device intended to be used to remove infectious materials from wounds or fluids from a patient's airway or respiratory support system. The device may be used during surgery in the operating room or at the patient's bedside. The device may include a microbial filter.
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April 7, 2023
Aroa Biosurgery Ltd. Tina O'brien Director, Regulatory Affairs 2 Kingsford Smith Place Airport Oaks, Auckland 2022 New Zealand
# Re: K223373
Trade/Device Name: Enivo™ Regulation Number: 21 CFR 878.4780 Regulation Name: Powered Suction Pump Regulatory Class: Class II Product Code: BTA, Dated: March 10, 2023 Received: March 10, 2023
# Dear Tina O'brien:
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. Although this letter refers to your product as a device, please be aware that some cleared products may instead be combination products. The 510(k) Premarket Notification Database located at https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm identifies combination product submissions. 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
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801); medical device reporting of medical device-related adverse events) (21 CFR 803) for devices or postmarketing safety reporting (21 CFR 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidance-regulatory-information/postmarketing-safety-reportingcombination-products); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR 4. Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
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 https://www.fda.gov/medical-device-safety/medical-device-reportingmdr-how-report-medical-device-problems.
For comprehensive regulatory information about medical devices and radiation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/medicaldevices/device-advice-comprehensive-regulatory-assistance) and CDRH Learn (https://www.fda.gov/training-and-continuing-education/cdrh-learn). Additionally, you may contact the Division of Industry and Consumer Education (DICE) to ask a question about a specific regulatory topic. See the DICE website (https://www.fda.gov/medical-device-advice-comprehensive-regulatoryassistance/contact-us-division-industry-and-consumer-education-dice) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).
Sincerely,
Digitally signed by Mark Mark Trumbore -S Trumbore -S Date: 2023.04.07 13:28:45 -04'00'
Mark Trumbore, Ph.D. Assistant Director DHT4A: Division of General Surgery Devices OHT4: Office of Surgical and Infection Control Devices Office of Product Evaluation and Quality Center for Devices and Radiological Health
Enclosure
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# K223373
DEPARTMENT OF HEALTH AND HUMAN SERVICES Food and Drug Administration
# Indications for Use
Expiration Date: 06/30/2023
See PRA Statement below.
| Indications for Use | See PRA Statement below. | | |
|------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------|
| Submission Number (if known) | K223373 | | |
| Device Name | Enivo™ | | |
| Indications for Use (Describe) | Enivo™ is indicated for use to remove surgical and bodily fluids from a closed wound for hematoma and seroma prophylaxis following plastic surgery or other general surgeries where large flaps are formed. | | |
| Type of Use (Select one or both, as applicable) | <table><tr><td><span style="text-decoration: overline;">☑</span> Prescription Use (Part 21 CFR 801 Subpart D)</td><td><span style="text-decoration: overline;">☐</span> Over-The-Counter Use (21 CFR 801 Subpart C)</td></tr></table> | <span style="text-decoration: overline;">☑</span> Prescription Use (Part 21 CFR 801 Subpart D) | <span style="text-decoration: overline;">☐</span> Over-The-Counter Use (21 CFR 801 Subpart C) |
| <span style="text-decoration: overline;">☑</span> Prescription Use (Part 21 CFR 801 Subpart D) | <span style="text-decoration: overline;">☐</span> Over-The-Counter Use (21 CFR 801 Subpart C) | | |
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| | K223373 |
|-----------------------------|-----------------------------------------------------------|
| 510(k) #: K223373 | 510(k) Summary |
| | Page 1 of 2 |
| | Prepared on: 2023-04-07 |
| Contact Details | 21 CFR 807.92(a)(1) |
| Applicant Name | Aroa Biosurgery Ltd. |
| Applicant Address | 2 Kingsford Smith Place Airport Oaks AKL 2022 New Zealand |
| Applicant Contact Telephone | +64 098693035 |
| Applicant Contact | Ms. Tina O'Brien |
| Applicant Contact Email | tina.obrien@aroabio.com |
| Device Name | 21 CFR 807.92(a)(2) |
| Device Trade Name | Enivo™ |
| Common Name | Powered suction pump |
| Classification Name | Pump, Portable, Aspiration (Manual Or Powered) |
| Regulation Number | 878.4780 |
| Product Code | BTA |
Legally Marketed Predicate Devices
| | 21 CFR 807.92(a)(3) |
|-------------|----------------------------------------------------------|
| Predicate # | Predicate Trade Name (Primary Predicate is listed first) |
| K222856 | SOMAVAC Device |
| | Product Code |
| | BTA |
| Device Description Summary | 21 CFR 807.92(a)(4) |
|----------------------------|---------------------|
|----------------------------|---------------------|
Enivo™ is a surgical drainage system intended for the removal of surgical and bodily fluids from a closed wound. The system can be used
in both home and healthcare environments.
The system includes two primary components:
- A vacuum device unit that includes a single-use, portable, and battery-powered vacuum device that provides continuous operation for
up to 30 days and a disposable exudate reservoir.
- a removable silicone drainage catheter
| Intended Use/Indications for Use | 21 CFR 807.92(a)(5) |
|----------------------------------|---------------------|
|----------------------------------|---------------------|
Enivo™ is indicated for use to remove surgical and bodily fluids from a closed wound for hematoma and seroma prophylaxis following
plastic surgery or other general surgeries where large flaps are formed.
| Indications for Use Comparison | 21 CFR 807.92(a)(5) |
|--------------------------------|---------------------|
|--------------------------------|---------------------|
Enivo™ shares the same intended use and indications as the predicate.
| Technological Comparison | 21 CFR 807.92(a)(6) |
|--------------------------|---------------------|
|--------------------------|---------------------|
The predicate device uses the same fundamental technology and use configuration as Enivo™ in that it is required to a Class I drainage catheter. The differences between Enivo™ and the predicate do not introduce a new intended use and do not raise new
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issues of safety and effectiveness. Bench testing has demonstrated that no new types of risk to the patent have been introduced by these differences and that the device performs as intended.
#### Non-Clinical and/or Clinical Tests Summary & Conclusions 21 CFR 807.92(b)
The Enivo™ system complies with voluntary standards for electromagnetic compatibility, and sterile drainage catheters. The following data was provided in support of the substantial equivalence determination:
- Software verification and validation testing
- Electrical safety and electromagnetic compatibility testing were conducted per IEC 60601 1:2005+AMD1:2012+AMD2:2020 with US deviations per AAM ES60601-1:2005+AMD1:2012+AMD2:2021, IEC 60601-1-2:2014+AMD1:2020, IEC 60601-1-8:2006+AMD1:2012 +AMD2:2020, IEC 60601-1-11:2015+AMD1:2020, and AIM 7351731:2017
- Biocompatibility evaluated as per ISO 10993-1:2018
- Vacuum pressure and flow rate performance testing
- Battery life testing
- Endurance runtime via simulated use testing
- Performance and safety assessed according to the applicable parts of ISO 20697:2018
- Package integrity assessed as per ASTM F1929:2015, ASTM F2096:2019, and ISO 11607-1:2019
- Package seal strength assessed as per ASTM F88/F88M:2015
- Bacterial filtration efficiency assessed as per ASTM F2101:2019
- Sterilization confirmed by assessment in accordance with ISO 11135:2018
- Bacterial endotoxins assessed as per ANSI/AAMI ST72:2019
- Bioburden (pre-EO) assessed as per ISO 11737-1:2021
- Connection leak testing
- Quantification of connection forces via uniaxial tensile and compression testing
- Mechanical strength assessed using uniaxial tensile and compression testing
- Alarm system assessed to perform as indicated in the instructions
- System performance assessed following simulated transportation testing as per ASTM D4169:2022
Clinical testing was not required to demonstrate the substantial equivalence of Enivo™ to the predicate device.
The intended use and indications for use of the substantially equivalent to the predicate device. The differences between Enivo™ and the predicate device do not intended use and do not raise new issues of safety and effectiveness. Testing demonstrated that no adverse effects have been introduced by the technological differences and that Enivo™ performs as intended.
From the results of nonclinical testing described, Aroa Biosurgery concludes that Enivo™ is substantially equivalent to the legally marketed predicate device.
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.