K Number
K020858
Device Name
NXSTAGE THERAPY SYSTEM
Date Cleared
2002-04-17

(30 days)

Product Code
Regulation Number
876.5860
AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP Authorized
Intended Use
The NxStage Therapy System is indicated for treatment of renal failure or fluid overload using hemofiltration and/or ultrafiltration. All treatments must be administered by a health care provider, under physician prescription.
Device Description
The NxStage Therapy System, consisting of hardware, software and a sterile disposable cartridge, is indicated for treatment of renal failure or fluid overload using hemofiltration and/or ultrafiltration. All treatments must be administered by a health care provider, under physician prescription.
More Information

Not Found

No
The summary does not mention AI, ML, or related terms, nor does it describe any features or performance metrics typically associated with AI/ML-powered devices.

Yes
The device is indicated for "treatment of renal failure or fluid overload using hemofiltration and/or ultrafiltration," which describes a therapeutic purpose.

No
The device is indicated for treatment of renal failure or fluid overload using hemofiltration and/or ultrafiltration, which describes a therapeutic function rather than a diagnostic one.

No

The device description explicitly states that the NxStage Therapy System consists of "hardware, software and a sterile disposable cartridge," indicating it is not a software-only device.

Based on the provided information, this device is not an IVD (In Vitro Diagnostic).

Here's why:

  • Intended Use/Indications for Use: The intended use is for the treatment of renal failure or fluid overload using hemofiltration and/or ultrafiltration. This is a therapeutic intervention performed directly on the patient's blood, not a diagnostic test performed on a sample in vitro (outside the body).
  • Device Description: The description reinforces the therapeutic nature of the system, involving hardware, software, and a disposable cartridge used for treatment.
  • Lack of IVD Characteristics: The document does not mention any of the typical characteristics of an IVD, such as:
    • Analyzing biological samples (blood, urine, tissue, etc.) to provide diagnostic information.
    • Detecting or measuring specific substances or markers in a sample.
    • Providing information for the diagnosis, monitoring, or prognosis of a disease or condition.

The NxStage Therapy System is a medical device used for treatment, not for diagnosis.

N/A

Intended Use / Indications for Use

The NxStage Therapy System is indicated for treatment of renal failure or fluid overload using hemofiltration and/or ultrafiltration. All treatments must be administered by a health care provider, under physician prescription.

Product codes (comma separated list FDA assigned to the subject device)

KDI

Device Description

The NxStage Therapy System, consisting of hardware, software and a sterile disposable cartridge, is indicated for treatment of renal failure or fluid overload using hemofiltration and/or ultrafiltration. All treatments must be administered by a health care provider, under physician prescription.

Mentions image processing

Not Found

Mentions AI, DNN, or ML

Not Found

Input Imaging Modality

Not Found

Anatomical Site

Not Found

Indicated Patient Age Range

Not Found

Intended User / Care Setting

health care provider, under physician prescription

Description of the training set, sample size, data source, and annotation protocol

Not Found

Description of the test set, sample size, data source, and annotation protocol

Not Found

Summary of Performance Studies (study type, sample size, AUC, MRMC, standalone performance, key results)

Design validation testing has been performed to ensure that the modified device meets design specifications.

Key Metrics (Sensitivity, Specificity, PPV, NPV, etc.)

Not Found

Predicate Device(s): If the device was cleared using the 510(k) pathway, identify the Predicate Device(s) K/DEN number used to claim substantial equivalence and list them here in a comma separated list exactly as they appear in the text. List the primary predicate first in the list.

K012510

Reference Device(s): Identify the Reference Device(s) K/DEN number and list them here in a comma separated list exactly as they appear in the text.

Not Found

Predetermined Change Control Plan (PCCP) - All Relevant Information for the subject device only (e.g. presence / absence, what scope was granted / cleared under the PCCP, any restrictions, etc).

Not Found

§ 876.5860 High permeability hemodialysis system.

(a)
Identification. A high permeability hemodialysis system is a device intended for use as an artificial kidney system for the treatment of patients with renal failure, fluid overload, or toxemic conditions by performing such therapies as hemodialysis, hemofiltration, hemoconcentration, and hemodiafiltration. Using a hemodialyzer with a semipermeable membrane that is more permeable to water than the semipermeable membrane of the conventional hemodialysis system (§ 876.5820), the high permeability hemodialysis system removes toxins or excess fluid from the patient's blood using the principles of convection (via a high ultrafiltration rate) and/or diffusion (via a concentration gradient in dialysate). During treatment, blood is circulated from the patient through the hemodialyzer's blood compartment, while the dialysate solution flows countercurrent through the dialysate compartment. In this process, toxins and/or fluid are transferred across the membrane from the blood to the dialysate compartment. The hemodialysis delivery machine controls and monitors the parameters related to this processing, including the rate at which blood and dialysate are pumped through the system, and the rate at which fluid is removed from the patient. The high permeability hemodialysis system consists of the following devices:(1) The hemodialyzer consists of a semipermeable membrane with an in vitro ultrafiltration coefficient (K
uf ) greater than 8 milliliters per hour per conventional millimeter of mercury, as measured with bovine or expired human blood, and is used with either an automated ultrafiltration controller or anther method of ultrafiltration control to prevent fluid imbalance.(2) The hemodialysis delivery machine is similar to the extracorporeal blood system and dialysate delivery system of the hemodialysis system and accessories (§ 876.5820), with the addition of an ultrafiltration controller and mechanisms that monitor and/or control such parameters as fluid balance, dialysate composition, and patient treatment parameters (e.g., blood pressure, hematocrit, urea, etc.).
(3) The high permeability hemodialysis system accessories include, but are not limited to, tubing lines and various treatment related monitors (e.g., dialysate pH, blood pressure, hematocrit, and blood recirculation monitors).
(b)
Classification. Class II. The special controls for this device are FDA's:(1) “Use of International Standard ISO 10993 ‘Biological Evaluation of Medical Device—Part I: Evaluation and Testing,’ ”
(2) “Guidance for the Content of 510(k)s for Conventional and High Permeability Hemodialyzers,”
(3) “Guidance for Industry and CDRH Reviewers on the Content of Premarket Notifications for Hemodialysis Delivery Systems,”
(4) “Guidance for the Content of Premarket Notifications for Water Purification Components and Systems for Hemodialysis,” and
(5) “Guidance for Hemodialyzer Reuse Labeling.”

0

Section 7 510(k) Summary

This 510(k) summary of safety and effectiveness information is being submitted in accordance with the requirements of the Safe Medical Device Act (SMDA) of 1990. The contents of this 510(k) summary have been provided in conformance with 21 CFR $807.92.

Date:March 15, 2002
Common/Usual Name:Hemofiltration System
Trade/Proprietary Name:NxStage™ Therapy System
Classification Name &
Device Classification:Dialyzer, High Permeability with or without
Dialysate System; Class II
Product Code:KDI
21 CFR Ref.:876.5860
Device Panel:Gastroenterology-Urology (GU)/Gastro-Renal
(GRDB)
510(k) Sponsor &
Owner/Operator:NxStage Medical, Inc
439 South Union St, Suite 501
South Lawrence, MA 01843
Owner/Operator No. 9045797
Contact Person:Norma LeMay
Sr. Regulatory Specialist

Device Description:

The NxStage Therapy System, consisting of hardware, software and a sterile disposable cartridge, is indicated for treatment of renal failure or fluid overload using hemofiltration and/or ultrafiltration. All treatments must be administered by a health care provider, under physician prescription.

Confidential

)

075

1

Substantial Equivalence:

This submission is a Special 510(k) Device Modification as described in FDA's guidance document entitled "The New 510(k) Paradigm - Alternate Approaches to Demonstrating Substantial Equivalence in Pre-Market Notifications." In support of this 510(k), NxStage Medical has provided certification of compliance to 21 CFR 820.30 Design Control requirements. Design validation testing has been performed to ensure that the modified device meets design specifications. The modified NxStage Therapy System has been compared to the NxStage Therapy System as cleared in K012510 and found to be substantial equivalent.

Conclusion:

Based on the device indications for use, comparison of descriptive and technological characteristics, and design control certification, the modified NxStage Therapy System has been shown to meet the minimum requirements that are considered acceptable for its intended use.

Image /page/1/Picture/6 description: The image shows the number 076. The numbers are in a bold, sans-serif font. The background is white. There is some other text to the left of the numbers, but it is not clear.

2

Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850

APR 1 7 2002

Ms. Norma LeMay Sr. Regulatory Specialist NxStage Medical, Inc. 439 S. Union St., Suite 501 LAWRENCE MA 01843

Re: K020858

Trade/Device Name: NxStage™ Therapy System Regulation Number: 21 CFR §876.5860 Regulation Name: High permeability hemodialysis system

Regulatory Class: II Product Code: 78 KDI Dated: March 15, 2002 Received: March 18, 2002

Dear Ms. LeMay:

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.

Image /page/2/Picture/12 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo is circular and contains the words "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" around the perimeter. In the center of the circle is a stylized image of three human profiles facing to the right, stacked on top of each other.

3

This letter will allow you to begin marketing your device as described in your 510(k) premarket notification. The FDA finding of substantial equivalence of your device to a legally marketed noutication. The PDF 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 If you desire specific daving at one of the following numbers, based on the regulation number at the top of this 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" (21 CFR Part 807.97). Other general information on of received to premiument 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 yours,

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

4

INDICATIONS FOR USE STATEMENT

Page _________________________________________________________________________________________________________________________________________________________________________

510(k) Number (if known): K020858

Device Name:

NxStage Therapy System

Indications for Use:

The NxStage Therapy System is indicated for treatment of renal failure or fluid overload using hemofiltration and/or ultrafiltration. All treatments must be administered by a health care provider, under physician prescription.

(PLEASE DO NOT WRITE BELOW THIS LINE - CONTINUE ON ANOTHER PAGE IF NEEDED)

Concurrence of CDRH, Office of Device Evaluation (ODE)

(Division Sign-Off)
Division of Reproductive, Abdominal, and Radiological Devices
510(k) NumberK020858
Prescription Use (Per 21 CFR 801.109)OROver-the-Counter Use
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