HYDROPURE PORTABLE EXCHANGE DEIONIZATION (PEDI) SYSTEM; HYDROPURE BACK-UP PEDI SYSTEM
K022747 · Hydropure Systems, Inc. · FIP · Feb 11, 2003 · Gastroenterology, Urology
Device Facts
Record ID
K022747
Device Name
HYDROPURE PORTABLE EXCHANGE DEIONIZATION (PEDI) SYSTEM; HYDROPURE BACK-UP PEDI SYSTEM
Applicant
Hydropure Systems, Inc.
Product Code
FIP · Gastroenterology, Urology
Decision Date
Feb 11, 2003
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 876.5665
Device Class
Class 2
Indications for Use
HydroPure Deionization Systems with pre & post-treatment and product water distribution components are intended for use with a hemodialysis system to remove organic and inorganic substances and microbial contaminants from water used to dilute dialysis concentrates to form dialysate, reprocessing of hemodialyzers and equipment rinse and disinfection.
Device Story
HydroPure PEDI systems purify potable feed water for hemodialysis via deionization. System components include pretreatment (pressure regulators, check valves, cartridge filters, carbon tanks) and post-treatment (submicron/ultrafilters, resistivity alarms). Input: potable feed water; Output: purified water meeting ANSI/AAMI RD62:2001 standards. Operation: pretreatment conditions water; deionization tanks remove ions; post-treatment removes bacteria/endotoxins. Monitoring: temperature-compensated audible/visual resistivity alarms (set at 1 megohm or greater) and mid-tank quality indicators. Used in clinical settings (acute/central/back-up); operated by clinical staff. If water quality drops below 1 megohm, alarm triggers, treatments discontinue, and tanks require replacement. Benefits: provides purified water for dialysate, dialyzer reprocessing, and equipment disinfection.
Clinical Evidence
Bench testing only. The device demonstrates compliance with ANSI/AAMI RD62:2001 standards for water treatment equipment for hemodialysis applications. No clinical data provided.
Technological Characteristics
System utilizes deionization tanks, carbon filtration, and submicron/ultrafilters. Features include pressure reducing valves, check valves, and resistivity monitoring (1 megohm threshold). Connectivity includes audible/visual alarms and remote alarm capability. Complies with ANSI/AAMI RD62:2001. Materials include carbon and mixed bed DI media.
Indications for Use
Indicated for use with hemodialysis systems to remove organic/inorganic substances and microbial contaminants from water used for dialysate preparation, dialyzer reprocessing, and equipment disinfection. Applicable to single-patient (Acute), multi-patient (Central), and back-up/polishing (Back-up) configurations.
Regulatory Classification
Identification
A water purification system for hemodialysis is a device that is intended for use with a hemodialysis system and that is intended to remove organic and inorganic substances and microbial contaminants from water used to dilute dialysate concentrate to form dialysate. This generic type of device may include a water softener, sediment filter, carbon filter, and water distillation system.
Special Controls
*Classification.* Class II (special controls). The device, when it is a water purification subsystem disinfectant, is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 876.9.
Predicate Devices
US Filter Corporation's water treatment system for dialysis
Submission Summary (Full Text)
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KO22747 PAGE 1 OF 2
FEB 1 1 2003
# 510(k) Summary of Safety and Effectiveness
This 510(k) Summary of Safety and Effectiveness is provided as part of this Premarket Notification to comply with the provisions of the safe Medical Devices Act of 1990 requiring that either a summary be included in a submission or a statement that a summary is available upon request.
#### Submitter
Robert V. Price HydroPure Systems, Inc. 3319 Bartlett Blvd. Orlando, FL. 32811 TEL: (407) 428-9377 FAX: (407) 648-0817 July 23, 2002
#### Device Names
Trade Names
HydroPure "Acute" Portable Exchange Deionization (PEDI) System HydroPure "Central" PEDI System HydroPure "Back-up" PEDI System
#### Common or usual name
Deionization systems with pre & post treatment and product water distribution components.
#### Classification name
Water purification systems for hemodialysis (21CFR 876.5665)
#### Intended Use
HydroPure Deionization Systems with pre & post-treatment and product water distribution components are intended for use with a hemodialysis system to remove organic and inorganic substances and microbial contaminants from water used to dilute dialysis concentrates to form dialysate, reprocessing of hemodialyzers and equipment rinse and disinfection.
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# K022747 PAGE 2 OF 2
## Device Description
The HydroPure systems purify potable feed water through deionization. Deionization is used to remove 99.99+% of ions from water. Deionization alone does not remove particulates, organics, bacteria, viruses or endotoxins. The systems require adequate pretreatment and post-treatment. Deionizers are designed for the hemodialysis application to treat RO or carbon filtered potable water. Inappropriate use can result in the formation of Nitrosamines in the effluent of the deionizer.
The purpose of the pretreatment section of the system is to condition the feed water supplying the deionizers. Conditioning the feed water will include: pressure reducing valves to regulate system pressure, check valves to prevent back-flow of the treated water into the potable water source, cartridge filters to reduce particulates and sediment, carbon filtration tanks to remove chloramines and sample ports after each carbon tank to check feed water conductivity and for any chlorine/chloramine residual.
The purpose of the post-treatment section of the system is to remove bacteria and endotoxins or lower them to acceptable levels as required by the AAMI standards. The post-treatment section of the system will include: submicron/ultrafilters after the deionizers. sample ports to check for microbial contamination and to test for comprehensive AAMI analysis, a 200K ohm quality control light at mid tank and a temperature compensated audible visual resistivity alarm set at one megohm or greater for final water quality. A remote alarm will be installed if the deionization system is not located in the patient treatment area. A distribution section of a system is necessary to deliver product water that meets ANSI/AAMI standards to the points of use. During use, continual monitoring of the effluent through the use of the temperature compensated audible and visual resistivity alarm is required. Routine monitoring of the mid tank quality indicator is also required on intervals during the day, at least before and after each patient treatment.
Should final water quality fall at or below 1 megohm, the alarm will sound and light up red and all patient treatments must be discontinued. The deionization tanks must be replaced as per Appendix C of the operating manual prior to resuming any patient treatment.
Depending upon the PEDI system size and feed water quality of 10grains TDS, HydroPure systems produce typically 250 gallons per deionization tank exchange at a flow-rate of up to 0.75gpm, to 3,600 gallons per deionization tank exchange at a flowrate of up to 15gpm.
HydroPure's water purification systems will produce product water that meets the requirements of the standard issued by the American National Standard Institute and the Association for the Advancement of Medical Instrumentation: ANSI/AAMI RD62:2001, Water Treatment Equipment For Hemodialysis Applications.
### Predicate Device
The Hydropure PEDI Systems and pretreatment and product water distribution components are substantially equivalent to US Filter Corporation's water treatment system for dialysis which utilizes carbon and deionization cylinders to purify water for hemodialysis.
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Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
FEB 11 2003
Mr. Robert V. Price President HydroPure Systems, Inc. 3319 Bartlett Blvd. ORLANDO FL 32811
Re: K022747
Trade/Device Name: HydroPure Systems, Inc. PEDI Water Purification Systems for Hemodialysis Regulation Number: 21 CFR §876.5665 Regulation Name: Water purification system for hemodialysis Regulatory Class: II Product Code: 78 FIP Dated: December 11, 2002 Received: December 17, 2002
Dear Mr. Price:
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.
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); 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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This letter will allow you to begin marketing your device as described in your Section 510(k) premarket notification. The FDA finding of substantial equivalence of your device to a legally marketed predicate device results in a classification 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), please contact the Office of Compliance at one of the following numbers, based on the regulation number at the top of the letter:
| 8xx.1xxx | (301) 594-4591 |
|----------------------------------|----------------|
| 876.2xxx, 3xxx, 4xxx, 5xxx | (301) 594-4616 |
| 884.2xxx, 3xxx, 4xxx, 5xxx, 6xxx | (301) 594-4616 |
| 892.2xxx, 3xxx, 4xxx, 5xxx | (301) 594-4654 |
| Other | (301) 594-4692 |
Additionally, for questions on the promotion 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" (21CFR Part 807.97) you may obtain. Other general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (301) 443-6597 or at its Internet address http://www.fda.gov/cdrh/dsma/dsmamain.html.
Sincerely vours.
Nancy C. Brogdon
Nancy C. Brogdon Director, Division of Reproductive, Abdominal and Radiological Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
Page 2
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Page 1 of 1
510(k) Number K022747
HydroPure "Acute" Portable Exchange Deionization (PEDI) System Device Name: HydroPure "Central" PEDI System. HydroPure "Back-up" PEDI System
Indications For Use:
The HydroPure "Acute" Portable Exchange Deionization (PEDI) System consists of two each small carbon and mixed bed DI tanks with pre & post-filtration. It is intended to be placed on the back of a dialysis machine or on a handcart for single patient dialysis.
The HydroPure "Central" PEDI System consists of two or more carbon and mixed bed DI tanks with pre & post-filtration. It is intended to be installed in a central location for multiple patient dialysis.
The HydroPure "Back-up" PEDI System consists of two or more mixed bed DI tanks as a component in a "back-up" condition when a RO system or major component on a water purification system for hemodialysis is in need of repair. It may also be used in DI polishing mode to remove ions that an RO could not lower to safe levels.
All three PEDI systems with appropriate pre & post-filtration and components is intended for use with a hemodialysis system to remove organic and inorganic substances from water that is used to dilute dialysis concentrates to form dialysate and to produce purified water for other purposes such as dialyzer reprocessing and equipment rinse and disinfection.
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
Prescription Use . (Per 21 CFR 801.109) (Optional Format 3-10-98)
David A. Segner
and Rad 510(k) Nun
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.