K141145 · Fresenius Medical Care Renal Therapies Group, LLC · FKX · Jul 30, 2014 · Gastroenterology, Urology
Device Facts
Record ID
K141145
Device Name
LIBERTY PDX CYCLER
Applicant
Fresenius Medical Care Renal Therapies Group, LLC
Product Code
FKX · Gastroenterology, Urology
Decision Date
Jul 30, 2014
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 876.5630
Device Class
Class 2
Attributes
Therapeutic
Indications for Use
The Liberty PDx™ Cycler is intended for Automated Peritoneal Dialysis (APD) therapy for the treatment of end-stage renal disease (ESRD) in clinical and home settings. The supported peritoneal dialysis therapy types include: Continuous Cycling Peritoneal Dialysis (CCPD), Intermittent Peritoneal Dialysis (IPD), Peritoneal Dialysis Plus™ Therapy (PD+), and Tidal Peritoneal Dialysis (TPD).
Device Story
Liberty PDx Cycler is a software-controlled electromechanical device for Automated Peritoneal Dialysis (APD). Used in clinical or home settings by patients or clinicians. System inputs include programmed treatment parameters (infusion volume, dwell time). Device heats dialysate solution, uses mushroom-head piston pump module to linearly displace fluid through a single-use disposable cassette, and monitors drained volume. Cassette features fluid channels and valve domes to direct flow between solution bags, patient, and drain. Output includes automated fluid delivery and treatment data stored on IQdrive (USB) or transmitted via optional cellular modem to FTP server. Healthcare providers use data to monitor therapy. Benefits include automated, precise management of peritoneal dialysis therapy for ESRD patients.
Clinical Evidence
Bench testing only. No clinical data presented. Performance testing included electrical safety (ES 60601-1, IEC 60601-1-11), electromagnetic compatibility (IEC 60601-1-2), and mechanical performance (IEC 60601-2-39). Biocompatibility of disposable sets verified per ISO 10993-1, ISO 10993-7, and ISO 11135-1.
Technological Characteristics
Software-controlled electromechanical pumping system. Components: touchscreen control panel, mushroom-head piston pump module, cassette compartment. Disposable set: polypropylene cassette with flexible film, PVC tubing, Safe-Lock connectors. Sterilization: Ethylene oxide (fluid path). Standards: IEC 60601-2-39:2007, ES 60601-1:2005, IEC 60601-1-2:2007, IEC 60601-1-11:2010, ISO 10993-1:2009, ISO 10993-7:2008, ISO 11135-1:2007.
Indications for Use
Indicated for acute and chronic peritoneal dialysis in patients with end-stage renal disease (ESRD).
Regulatory Classification
Identification
(1) A peritoneal dialysis system and accessories is a device that is used as an artificial kidney system for the treatment of patients with renal failure or toxemic conditions, and that consists of a peritoneal access device, an administration set for peritoneal dialysis, a source of dialysate, and, in some cases, a water purification mechanism. After the dialysate is instilled into the patient's peritoneal cavity, it is allowed to dwell there so that undesirable substances from the patient's blood pass through the lining membrane of the peritoneal cavity into this dialysate. These substances are then removed when the dialysate is drained from the patient. The peritoneal dialysis system may regulate and monitor the dialysate temperature, volume, and delivery rate together with the time course of each cycle of filling, dwell time, and draining of the peritoneal cavity or manual controls may be used. This generic device includes the semiautomatic and the automatic peritoneal delivery system.(2) The peritoneal access device is a flexible tube that is implanted through the abdominal wall into the peritoneal cavity and that may have attached cuffs to provide anchoring and a skin seal. The device is either a single use peritioneal catheter, intended to remain in the peritoneal cavity for less than 30 days, or a long term peritoneal catheter. Accessories include stylets and trocars to aid in the insertion of the catheter and an obturator to maintain the patency of the surgical fistula in the abdominal wall between treatments. (3) The disposable administration set for peritoneal dialysis consists of tubing, an optional reservoir bag, and appropriate connectors. It may include a peritoneal dialysate filter to trap and remove contaminating particles. (4) The source of dialysate may be sterile prepackaged dialysate (for semiautomatic peritoneal dialysate delivery systems or “cycler systems”) or dialysate prepared from dialysate concentrate and sterile purified water (for automatic peritoneal dialysate delivery systems or “reverse osmosis” systems). Prepackaged dialysate intended for use with either of the peritoneal dialysate delivery systems is regulated by FDA as a drug.
Special Controls
*Classification.* Class II (special controls). The following accessories are exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 876.9: A catheter finger grip that is non-patient contacting and intended for single use with a peritoneal catheter; a continuous ambulatory peritoneal dialysis (CAPD) belt; and a catheter stand that does not include weigh scales.
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Image /page/0/Picture/0 description: The image shows the Fresenius Medical Care logo. The logo consists of a stylized graphic on the left and the text "FRESENIUS MEDICAL CARE" on the right. The graphic is made up of three downward-pointing chevron shapes stacked on top of each other. The text is in bold, sans-serif font, with "FRESENIUS" on the top line and "MEDICAL CARE" on the bottom line.
#### 5. 510(K) SUMMARY
This 510(k) Summary is in accordance with the requirements of the Safe Medical Device Act (SMDA) of 1990. The content of this 510(k) summary is provided in conformance with 21 CFR § 807.92.
#### Submitter's Information 5.1.
| Name: | Fresenius Medical Care Renal Therapies Group, LLC<br>(FMC-RTG) |
|----------------------|--------------------------------------------------------------------|
| Address: | 920 Winter Street<br>Waltham, MA 02451-1457 |
| Phone: | (781) 699-4479 |
| Fax: | (781) 699-9635 |
| Contact Person: | Denise Oppermann,<br>Senior Director, Regulatory Affairs - Devices |
| Date of Preparation: | 01 May 2014 |
#### 5.2. Device Name
| Trade Name: | Liberty PDx™ Cycler |
|------------------------------------|--------------------------------------------|
| Common Name: | System, Peritoneal, Automatic Delivery |
| Classification Name: | Peritoneal dialysis system and accessories |
| Classification Number: | Class II per 21 CFR §876.5630 |
| Product Code/Classification Panel: | FKX/Gastroenterology/Urology |
#### 5.3. Legally Marketed Predicate Device
Fresenius Liberty Cycler (K123630)
#### 5.4. Device Description
The Liberty PDx Cycler is a software-controlled electromechanical device designed for use in Automated Peritoneal Dialysis (APD) therapy for the treatment of end-stage renal disease (ESRD). The Liberty PDx Cycler is designed as a table-top unit for use with single-use, dedicated disposable set (referred to as Liberty PDx Cycler sets). The Liberty PDx Cycler may be prescribed for either clinical or home treatment settings, as the predicate Liberty Cycler. Treatment settings, such as the amount of solution to be infused and the length of time the solution remains in the peritoneal cavity, are programmed into the cycler. During treatment, the Liberty PDx Cycler heats the
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Image /page/1/Picture/0 description: The image shows the Fresenius Medical Care logo. The logo consists of a stylized symbol on the left and the text "FRESENIUS MEDICAL CARE" on the right. The symbol is made up of three chevron-like shapes stacked on top of each other. The text is in bold, sans-serif font, with "FRESENIUS" on the top line and "MEDICAL CARE" on the bottom line.
peritoneal dialysis solution prior to patient infusion, measures and delivers a predetermined amount of fluid to the patient, and monitors the drained volume.
The Liberty PDx Cycler system consists of a Control Panel (user interface), Pump Module, Cassette Compartment, a disposable Cycler set (single-use), IOdrive, and an optional peripheral cellular modem. The control panel consists of a touchscreen display and front panel keys which provide a user interface. The pump module consists of mushroom-head piston(s) that are linearly displaced to alternately draw the dialysate solution to and from the patient's peritoneal cavity. The cassette compartment provides the interface for the disposable cycler set with the pump module's mushroom-head pistons. The cycler set is connected to a number of tubes which, in turn, connect to the dialysate solution bags, the patient, or a drain and provide a flow path between the cycler and the patient. At the end of each treatment, data generated by the Liberty PDx Cycler and stored in battery-backed memory are read and written to a treatment data set on the IQdrive (USB memory stick). Additionally, an optional peripheral cellular modem can also be used with the Liberty PDx Cycler to transmit treatment data files to an FTP server at the end of each treatment.
The Liberty PDx Cycler set is loaded into the cassette compartment of the Liberty PDx Cycler at the initiation of treatment. The cassette is composed of a ridged molded plastic (polypropylene) body covered with a flexible film/membrane. The cassette contains molded features, such as fluid channels, flexible valve domes and two (2) pumping chambers that are acted upon by the cycler to direct the flow of the peritoneal dialysate to and from the patient's peritoneal cavity.
There are seven (7) fluid lines connected to the cassette:
- . One (1) drain line
- . One (1) patient connection line (with one (1) or two (2) stay safe® patient connectors depending on the model)
- . Five (5) Dialysate Solution Lines (with Safe-Lock® connector):
- One (1) heater bag
- One (1) last dialysate bag/'last bag option' ।
- Three (3) additional solution bags -
The three Liberty PDx Cycler sets designed for use with the Liberty PDx Cycler are constructed from identical materials. The sets differ only in the length of lines or in the number of patient connectors, as described in Table 1.
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| Cycler Set<br>Product Codes | Features |
|-----------------------------|------------------------------------------------------------------------------------|
| 050-87220 | • Dual Patient Connector<br>• Patient Line - 10 feet<br>• Drain Line - 28 inches |
| 050-87221 | • Single Patient Connector<br>• Patient Line - 10 feet<br>• Drain Line - 28 inches |
| 050-87222 | • Single Patient Connector<br>• Patient Line - 20 feet<br>• Drain Line - 20 feet |
#### Liberty PDx Disposable Cycler Sets Table 1:
#### 5.5. Indications for Use
The Liberty PDx™ Cycler is indicated for acute and chronic peritoneal dialysis.
#### 5.6. Intended Use
The Liberty PDx™ Cycler is intended for Automated Peritoneal Dialysis (APD) therapy for the treatment of end-stage renal disease (ESRD) in clinical and home settings. The supported peritoneal dialysis therapy types include: Continuous Cycling Peritoneal Dialysis (CCPD), Intermittent Peritoneal Dialysis (IPD), Peritoneal Dialysis Plus™ Therapy (PD+), and Tidal Peritoneal Dialysis (TPD).
#### Technological Characteristics 5.7.
The Liberty PDx Cycler system and the predicate Liberty Cycler have equivalent technological characteristics:
- 1. Fundamental Scientific Technology/Operating Principle: Software-controlled electromechanical pumping system with actuating linear pump heads interfacing with the cassette fluid chamber to direct the flow of dialysis solution between the cycler and the patient. Flow direction is controlled by the pump movement.
- 2. Design/Configuration: Software-controlled electromechanical device with control (pumps and valves) and monitoring (sensors) components which interface with a disposable cycler set for fluid displacement. The single-use disposable cycler set is comprised of dialysate fluid-contacting components such as a pump cassette assembly, male Safe-Lock connectors, tubing, and stay safe patient connector to allow for the movement of peritoneal dialysate to and from the patient.
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Image /page/3/Picture/0 description: The image shows the Fresenius Medical Care logo. The logo consists of a stylized symbol on the left and the text "FRESENIUS MEDICAL CARE" on the right. The symbol is made up of three stacked chevrons, with the top two chevrons being larger than the bottom one. The text is in a bold, sans-serif font, with "FRESENIUS" on the top line and "MEDICAL CARE" on the bottom line.
K141145 Page 4 of 4
- 3. User Interface: Control panel with integrated touchscreen display and front panel keys.
- 4. Sterility (Cycler Set): Ethylene oxide, fluid path only
#### 5.8. Performance Data
Performance testing requirements were determined through the application of a risk management process, applicable FDA guidance documents and performance standards (21 CFR §876.5630). Performance testing to support the determination of substantial equivalence included testing to IEC 60601-2-39:2007, ES 60601-1:2005, IEC 60601-1-2:2007, and IEC 60601-1-11:2010. The Liberty PDx Cycler sets were tested to ISO 10993-1:2009, ISO 10993-7:2008, and ISO 11135-1:2007.
#### 5.9. Conclusion
The information provided in this submission, including design verification, risk management, electrical safety, electromagnetic compatibility (EMC), biocompatibility and usability testing demonstrates the Liberty PDx Cycler functions as intended and supports the determination of substantial equivalence to the predicate device. Test results demonstrate that the differences between the proposed and the predicate device are not significant and do not raise any new concerns with regard to safety or effectiveness.
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Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
July 30, 2014
Fresenius Medical Care Renal Therapies Group, LLC Denise Oppermann Senior Director, Regulatory Affairs - Devices 920 Winter Street Waltham, MA 02451
Re: K141145
> Trade/Device Name: Liberty PDx Cycler Regulation Number: 21 CFR§ 876.5630 Regulation Name: Peritoneal dialysis system and accessories Regulatory Class: II Product Code: FKX Dated: May 1, 2014 Received: May 2, 2014
Dear Denise Oppermann,
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.
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Page 2 - Denise Oppermann
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 go to http://www.fda.gov/AboutFDA/CentersOffices/CDRH/CDRHQffices/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.
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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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### 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) K141145
Device Name
Liberty PDx Cycler
Indications for Use (Describe) The Liberty PDx Cycler is indicated for acute and chronic peritoneal dialysis.
Type of Use (Select one or both, as applicable)
2 Prescription Use (Part 21 CFR 801 Subpart D)
- Over-The-Counter Use (21 CFR 801 Subpart C)
# PLEASE DO NOT WRITE BELOW THIS LINE - CONTINUE ON A SEPARATE PAGE IF NEEDED.
## FOR FDA USE ONLY
Concurrence of Center for Devices and Radiological Health (CDRH) (Signature)
This section applies only to requirements of the Paperwork Reduction Act of 1995.
## *DO NOT SEND YOUR COMPLETED FORM TO THE PRA STAFF EMAIL ADDRESS BELOW.*
The burden time for this collection of information is estimated to average 79 hours per response, including the time to review instructions, search existing data sources, gather and maintain the data needed and complete and review the collection of information. Send comments regarding this burden estimate or any other aspect of this information collection, including suggestions for reducing this burden, to:
> Department of Health and Human Services Food and Drug Administration Office of Chief Information Officer Paperwork Reduction Act (PRA) Staff PRAStaff@ida.hhs.gov
"An agency may not conduct or sponsor, and a person is not required to respond to, a collection of information unless it displays a currently valid OMB number."
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.