K112454 · Barrx Medical, Inc. · GEI · Jan 5, 2012 · General, Plastic Surgery
Device Facts
Record ID
K112454
Device Name
HALO60 ABLATION CATHETER
Applicant
Barrx Medical, Inc.
Product Code
GEI · General, Plastic Surgery
Decision Date
Jan 5, 2012
Decision
SESE
Submission Type
Special
Regulation
21 CFR 878.4400
Device Class
Class 2
Attributes
Therapeutic
Indications for Use
The HALO60 Ablation Catheter (used with the HALOFER Energy Generator, model 1190A-115A) is indicated for use in the coagulation of bleeding and non-bleeding sites in the gastrointestinal tract including but not limited to the esophagus. Indications include Esophageal Ulcers, Mallory-Weiss tears, Arteriovenous Malformations, Angiomata, Barrett's Esophagus, Dieulafoy Lesions, Angiodysplasia, Gastric Antral Vascular Ectasia (GAVE) and Radiation Proctitis (RP).
Device Story
Single-use bipolar ablation catheter; delivers radiofrequency (RF) energy to gastrointestinal tissue via copper electrode. Used with HALOFER Energy Generator (model 1190A-115A). Physician introduces catheter into esophagus under endoscopic visualization; positions electrode against target tissue; activates energy via generator front panel or foot-pedal. Generator recognizes catheter via unique ID; automatically sets power/energy density. Coagulation effect verified endoscopically. Enables treatment of smaller diseased areas compared to predicate. Benefits patient by providing targeted coagulation of bleeding/non-bleeding sites.
Clinical Evidence
Bench testing only. Design verification activities and FMECA were performed to demonstrate that design outputs meet design input requirements following the dimensional modification of the electrode.
Technological Characteristics
Single-use bipolar electrosurgical catheter; copper electrode; RF energy source; dimensions reduced to 1.5cm² surface area. Compatible with HALOFER Energy Generator. No software changes. Sterilization method not specified.
Indications for Use
Indicated for coagulation of bleeding and non-bleeding gastrointestinal sites, including esophagus, in patients with Esophageal Ulcers, Mallory-Weiss tears, Arteriovenous Malformations, Angiomata, Barrett's Esophagus, Dieulafoy Lesions, Angiodysplasia, Gastric Antral Vascular Ectasia (GAVE), and Radiation Proctitis (RP).
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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# 510(K) SUMMARY OF SAFETY & EFFECTIVENESS -BÂRRX's HALO60 Ablation Catheter
JAN - 5 2012
## SUBMITTER'S NAME, ADDRESS, TELEPHONE NUMBER, CONTACT PERSON AND DATE PREPARED
BÂRRX Medical, Inc. 540 Oakmead Parkway Sunnyvale, CA 94085 Phone: (408) 328-7357 Facsimile: (408) 328-7395 Contact: Dawn Chang, Regulatory Affairs Manager Date Prepared: August 24, 2011
#### NAME OF SUBJECT DEVICE AND NAME/ADDRESS OF SPONSOR
HALO60 Ablation Catheter (model 90-9300) BÄRRX Medical, Inc. 540 Oakmead Parkway Sunnyvale, CA 94085
# ESTABLISHMENT REGISTRATION NUMBER
3004904811
#### COMMON OR USUAL NAME
Electrosurgical Coagulation Catheter
## REGULATION DESCRIPTION
Electrosurgical Cutting and Coagulation Devices and Accessories (21 CFR 878.4400, Product Code GEI)
#### PREDICATE DEVICE
HALO90 Ablation Catheter (model 90-9100, cleared by the FDA under K093008, K083737, and K062723).
#### OVERVIEW
The HALO® Ablation Catheter (subject device, hereafter referred to as "HALO®") is a single-use bipolar device that delivers radiofrequency energy to the treatment tissue within the gastrointestinal tract through a copper electrode. The HALO" is a modification of the HALO® Ablation Catheter (predicate device, cleared by the FDA under K093008, K083737, and K062723, hereafter referred to as "HALO""). The
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K112454
Pg. 2 of 3
primary modification is a dimensional reduction of the copper electrode surface area, from 2.6cm- (1.3cm x 2.0cm, HALO90) to 1.5cm- (1.0cm x 1.5cm, HALO80). Secondary modifications include dimensional reduction of the copper electrode supporting components.
The electrode surface area of the subject device is reduced to approximately 60% of the predicate device, hence the product name HALO60. This new product provides an option for physicians to treat smaller diseased area. The modification neither changes the intended use nor alters the fundamental scientific technology of the original device; therefore this submission is a Special 510(k).
## DEVICE DESCRIPTION
The HALO® (subject device) is a single-use bipolar device that delivers radiofrequency energy to the treatment tissue within the gastrointestinal tract. It is used solely with the HALOFES Energy Generator (model 1190A-115A), which provides the radiofrequency energy.
### PRINCIPLES OF OPERATION
Same as the HALO90, the HALO® is connected to the HALOFER Energy Generator using an output cable. Once connected, the Generator will recognize the catheter based on a unique ID and set the appropriate power density and energy density range.
The HALO® is introduced into the esophagus under endoscopic visualization. Once the targeted treatment area is identified, the catheter electrode is positioned against the tissue by deflecting the endoscope. The energy activation is performed by depressing either a front panel switch on the generator or the foot-pedal. After the energy is delivered, the coagulation effect can be verified endoscopically.
# INDICATION FOR USE STATEMENT
The HALO60 Ablation Catheter (used with the HALOFER Energy Generator, model 1190A-115A) is indicated for use in the coagulation of bleeding and non-bleeding sites in the gastrointestinal tract including but not limited to the esophagus. Indications include Esophageal Ulcers, Mallory-Weiss tears, Arteriovenous Malformations, Angiomata, Barrett's Esophagus, Dieulafoy Lesions, Angiodysplasia, Gastric Antral Vascular Ectasia (GAVE) and Radiation Proctitis (RP).
510(k) HALO" Ablation Catheter BÂRRX Medical, Inc. -
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K112454
pg. 30f.3
# SUBSTANTIAL EQUIVALENCE DISCUSSION
As mentioned earlier, the HALO® (subject device) is a modification of the HALO90 (predicate device), cleared by the FDA under K093008, K083737, and K062723. The primary modification is a dimensional reduction of the copper electrode surface area, from 2.6cm² (1.3cm x 2.0cm, HALO90) to 1.5cm² (1.0cm x 1.5cm, HALO90) and the secondary modifications include dimensional reduction of the copper electrode supporting components. There is no change in the materials, amount of energy being delivered and the depth of the tissue being treated.
Both the subject and the predicate devices have the same intended use and fundamental scientific technology. Both devices are compatible with the HALO「EEX Energy Generator. No changes have been made to the HALOFER Energy Generator software in order to accommodate the HALO60.
#### SUMMARY OF DESIGN CONTROL ACTIVITIES
Failure Modes, Effects, and Criticality Analysis (FMECA) was used to analyze the risks associated with the design modification. Design verification activities demonstrate that the design outputs of the modified device meet the design input requirements.
### CONCLUSION
In summary, the company's HALO® Ablation Catheter has the same intended use as all of the previously cleared HALO90 Ablation Catheter (K093008, K083737, K062723). In addition, the HALO® Ablation Catheter has identical indications, technological characteristics, and principles of operation as its predicate devices.
The minor differences between the HALO® Ablation Catheter model 90-9300 and its predicate device HALO90 Ablation Catheter model 90-9100 do not raise new questions of safety or effectiveness. Thus, the HALO® Ablation Catheter model 90-9300 is substantially equivalent.
510(k) HALO60 Ablation Catheter BÂRRX Medical, Inc.
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Image /page/3/Picture/1 description: The image shows the seal of the Department of Health & Human Services - USA. The seal features a stylized eagle with three stripes forming its body and wing. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" is arranged in a circular pattern around the eagle.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Room -WO66-G609 Silver Spring, MD 20993-0002
Ms. Dawn Chang Regulatory Affairs Manager BÂRRX Medical, Inc. 540 Oakmead Parkway SUNNYVALE CA 94085
JAN - 5 2012
Re: K112454
Trade/Device Name: HALO60 Ablation Catheter, Model 90-9300 Regulation Number: 21 CFR §878.4400 Regulation Name: Electrosurgical cutting and coagulation device and accessories Regulatory Class: Class II Product Codes: GEI, KNS Dated: December 8, 2011 Received: December 9, 2011
Dear Ms. Chang:
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
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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 go to http://www.fda.gov/AboutFDA/CentersOffices/CDRH/CDRHOffices/ucm115809.htm for the Center for Devices and Radiological Health's (CDRH's) Office of Compliance. 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/Resourcesfor You/Industry/default.htm.
Sincerely yours,
C. Herbert Lemon w
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 Statement
# 510(k) Number (if known): K112454
Device Name:
- HALO® Ablation Catheter model 90-9300 .
Indications for Use:
The HALO® Ablation Catheter (used with the HALO' เช่น Energy Generator, model 11904-115A) is The HALU" Ablation Catherer (used with the mass on the gastrointesting sites in the gastrointesting the indicated for use in the coagulation of bleating and not and new and one of the mallory-Weiss tears,
including but not limited to the esophagus. Indications include Escophag including but not illinited to the Esophagus, Thanks in Submatoy Lesions, Angiodysplasia,
Arteriovenous Malformations, Angiomata, Barrett's Esophagus, Dieulafoy Lesions, Angi Arcchovenous Manoas Manova (GAVE) and Radiation Proctitis (RP).
Prescription Use __X (Part 21 C.F.R. 801 Subpart D) AND/OR
Over-The-Counter Use_ (21 C.F.R. 807 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE -- CONTINUE ON ANOTHER PAGE IF NEEDED) – please go to page 2
Concurrence of CDRH, Office of Device Evaluation (ODE)
Herbert Simon
(Division Sign-Off)
Division of Reproductive, Gastro-Renal, and
Urological Devices
510(k) Number K112454
510(k) HALO60 Ablation Catheter BÂRRX Medical, Inc.
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.