CRIT-LINE MONITOR III TQA (CLM TQA)

K011741 · Hemametrics · FIL · Jul 23, 2002 · Gastroenterology, Urology

Device Facts

• Record ID: K011741
• Device Name: CRIT-LINE MONITOR III TQA (CLM TQA)
• Applicant: Hemametrics
• Product Code: FIL · Gastroenterology, Urology
• Decision Date: Jul 23, 2002
• Decision: SESE
• Submission Type: Traditional
• Regulation: 21 CFR 876.5820
• Device Class: Class 2

Intended Use

The intended use of the CRIT-LINE III TQA Monitor is as a non-invasive hematocrit, oxygen saturation, and percent change in blood volume monitor. The CRIT-LINE III TQA Monitor also non-invasively estimates access recirculation and non-invasively estimates access blood flow. In addition, the CLM III TQA Monitor calculates an estimated Urea Reduction Ratio based on relative changes in urea nitrogen concentration in the spent dialysate.

Device Story

CRIT-LINE III TQA (CLM III TQA) is a non-invasive monitor for hemodialysis patients; measures hematocrit, oxygen saturation, percent change in blood volume, access recirculation, and access blood flow. New functionality includes URR estimation via optical sensor attached to spent dialysate stream. Sensor emits light through dialysate; constituents absorb light; transmitted light detected to calculate relative urea nitrogen concentration. Used in clinical hemodialysis settings; operated by healthcare professionals. Output provides real-time data on treatment efficiency and vascular access status; assists clinicians in monitoring dialysis adequacy and patient safety.

Clinical Evidence

Clinical evaluation conducted between Jan 1 and May 10, 2001, involving 51 data points from 36 patients. Compared CLM III TQA calculated URR to EktaChem DT60 reference measurements. Analysis yielded a standard error of 5.8 mg/dL and R=0.84. In-vitro calibration testing against the same reference analyzer in the 0-83 mg/dL range demonstrated a standard error of 1.2 mg/dL and R2=0.998.

Technological Characteristics

Non-invasive optical sensor; utilizes light emission and detection through spent dialysate stream. Measures optical density to estimate urea nitrogen concentration. Device is a Class II hemodialysis monitor. Connectivity and software details not specified beyond sensor integration.

Indications for Use

Indicated for hemodialysis patients requiring non-invasive monitoring of hematocrit, oxygen saturation, blood volume changes, access recirculation, access blood flow, and estimated Urea Reduction Ratio (URR).

Regulatory Classification

Identification

A hemodialysis 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 an extracorporeal blood system, a conventional dialyzer, a dialysate delivery system, and accessories. Blood from a patient flows through the tubing of the extracorporeal blood system and accessories to the blood compartment of the dialyzer, then returns through further tubing of the extracorporeal blood system to the patient. The dialyzer has two compartments that are separated by a semipermeable membrane. While the blood is in the blood compartment, undesirable substances in the blood pass through the semipermeable membrane into the dialysate in the dialysate compartment. The dialysate delivery system controls and monitors the dialysate circulating through the dialysate compartment of the dialyzer.(1) The extracorporeal blood system and accessories consists of tubing, pumps, pressure monitors, air foam or bubble detectors, and alarms to keep blood moving safely from the blood access device and accessories for hemodialysis (§ 876.5540) to the blood compartment of the dialyzer and back to the patient. (2) The conventional dialyzer allows a transfer of water and solutes between the blood and the dialysate through the semipermeable membrane. The semipermeable membrane of the conventional dialyzer has a sufficiently low permeability to water that an ultrafiltration controller is not required to prevent excessive loss of water from the patient's blood. This conventional dialyzer does not include hemodialyzers with the disposable inserts (Kiil type) (§ 876.5830) or dialyzers of high permeability (§ 876.5860). (3) The dialysate delivery system consists of mechanisms that monitor and control the temperature, conductivity, flow rate, and pressure of the dialysate and circulates dialysate through the dialysate compartment of the dialyzer. The dialysate delivery system includes the dialysate concentrate for hemodialysis (liquid or powder) and alarms to indicate abnormal dialysate conditions. This dialysate delivery system does not include the sorbent regenerated dialysate delivery system for hemodialysis (§ 876.5600), the dialysate delivery system of the peritoneal dialysis system and accessories (§ 876.5630), or the controlled dialysate delivery system of the high permeability hemodialysis system § 876.5860). (4) Remote accessories to the hemodialysis system include the unpowered dialysis chair without a scale, the powered dialysis chair without a scale, the dialyzer holder set, dialysis tie gun and ties, and hemodialysis start/stop tray.

Reference Devices

• EktaChem DT60 (Vitros DT60 Chemistry System)

Submission Summary (Full Text)

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# JUL 2 3 2002

# 510 (K) Summary (#K011741) - Updated July 22, 2002

# SECTION 1-GENERAL INFORMATION

| 1. | Applicant/Specification Developer: | HemaMetrics<br>695 North 900 West<br>Kaysville, UT 84037<br>Tel: [phone]<br>Fax: [phone] |
|----|------------------------------------|--------------------------------------------------------------------------------------------------------|
| | Registration Number: | 1721979 |
| 2. | Contact Persons: | Mr. Matthew L. Haynie<br>Dir. of Quality Assurance/Reg. Affairs |

#### 3. Administrative Information:

- a. Trade/Proprietary Name Including Model Number of Devices:
CRIT-LINE III TQA Monitor (CLM III TQA)

### b. Common Name or Classification Name (21 CFR Part 807.87) of Device:

Non-invasive Hematocrit, Blood Volume, Oxygen Saturation, Recirculation and Access Blood Flow Monitor

### c. Address of Manufacturing Facility/Sterilization Sites:

HemaMetrics 695 North 900 West Kaysville, UT 84037

#### Contract Manufacturers:

None

The CLM III TQA is a non-sterile product.

#### d. Class in which Device has been placed:

Class II

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# e. Reason for Pre-market Notification

The reason for this pre-market notification is to claim that the CLM III TQA can non-invasively measure the Urea Reduction Ratio based on detected changes in the urea nitrogen concentration in the spent dialysate. The URR is a key indicator as to the efficiency of a hemodialysis treatment. It indicates the extent of toxin urea removal from the patient's body as a result of the blood flowing across one side of the dialyzer with continuous counter-flow of dialysate on the opposite side of the dialyzer membrane.

NOTE: The CLM III TOA is already cleared for the non-invasive measurement of Hct, O2 Sat, and Percent Change in Blood Volume. In addition, the CLM III TOA estimates access recirculation and transcutaneously estimates Access Blood Flow. URR is an additional claim for this already cleared device.

# f. Identification of Legally Marketed Device Which We Claim Substantial Equivalency

The predicate method which was used to compare the urea nitrogen concentration measurements of the CLM III TQA includes the following:

# EktaChem DT60 (Vitros DT60 Chemistry System):

The DT60 is a Vitros DT slide analyzer that performs a number of discrete clinical tests on serum, plasma, or whole blood using optical density techniques. Each Vitros DT slide, therefore contains analyte-specific reaction reagents whose resulting product is a molecule with a given color. The amount of colored product or the optical density is therefore directly dependent on the original analyte concentration delivered onto the Vitros DT slide. Optical density measurements are performed with a fiber optic-based excitation and detection scheme employing one of three LED's (red. green. yellow) and one photodetector.

# Vitros DT Slide Characteristics Specific for BUN/UREA:

The BUN/ UREA DT slide is a multilayered dry film contained within a plastic support. All reagents specific to urea are self-contained within the slide. Color development results from the hydrolysis of urea to ammonia and carbon dioxide by the urease enzyme. The resulting ammonia subsequently reacts with an indicator to produce a highly colored dye.

#### Compliance with Requirements of the Federal FD&C Act: g.

The Gastrointestinal and Restorative Device (DGRD) Panel has classified this device as Class II, 21 CFR Part 876.5820

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# SECTION 2 - INTENDED USE

The intended use of the CRIT-LINE III TQA Monitor is as a non-invasive hematocrit, oxygen saturation, and percent change in blood volume monitor. The CRIT-LINE III TQA Monitor also non-invasively estimates access recirculation and non-invasively estimates access blood flow. In addition, the CLM III TOA Monitor calculates an estimated Urea Reduction Ratio based on relative changes in urea nitrogen concentration in the spent dialysate.

### SECTION 3 - DEVICE DESCRIPTION

The CRIT-LINE III TQA is an FDA cleared device that non-invasively measures Hct, O2 Sat, Percent Change in Blood Volume. The CLM III TOA also estimates Access Recirculation and Access Blood Flow. The URR sensor is an additional attachment to the CRIT-LINE III TOA. The optical light emitted by the URR sensor is directed through the spent dialysate stream and absorbed by the constituents of the spent dialysate. The transmitted light is then detected and the relative urea nitrogen concentration in the spent dialysate is calculated.

## SECTION 4-COMPARATIVE INFORMATION

#### a. Comparative Performance Evaluation:

# IN-VIVO UREA NITROGEN DETECTION

Between January 1 and May 10, 2001, 51 data points were gathered in-vivo on 36 patients comparing the CLM III TQA's calculated URR based on relative urea nitrogen concentration measurements in the spent dialysate to URR measurements as calculated by the EktaChem DT 60 based on urea nitrogen concentration measurements in both blood and spent dialysate.

Once the data was gathered, an analysis of the data was performed. Relative urea nitrogen concentrations measured by the CLM III TQA URR sensor were first compared with that measured by the EktaChem DT 60. The analysis vielded a standard error of 5.8 mg/dL and an R of 0.84. Since each patient run has its own characteristics which can be cancelled through the ratio during the URR calculation, the accuracy of this comparison is not affecting the accuracy of calculated URR.

# IN-VITRO UREA NITROGEN CALIBRATION:

In addition to the in-vivo data that was gathered from the patients in a clinical setting, the same optical-based CLM III TQA URR sensor as mentioned above was calibrated with pure urea dissolved in fresh dialysate solution. The URR sensor measurement at each urea nitrogen concentration was compared with the

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reference urea nitrogen concentration measured by a Kodak EktaChem DT 60 analyzer.

In the urea nitrogen concentration range of 0 ~ 83 mg/dL, the CLM III TQA URR sensor measurements had a standard error of 1.2 mg/dL and an R2 of 0.998 when compared to the reference measurements obtained from EktaChem DT 60. These results indicate that the CLM III TQA URR sensor and the Kodak EktaChem DT 60 analyzer are substantially equivalent in the measurement of urea nitrogen concentration in an in-vitro assay.

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Image /page/4/Picture/11 description: The image shows the logo for the Department of Health & Human Services (HHS) in the USA. The logo features a stylized caduceus symbol, which is a staff with two snakes coiled around it, often associated with medicine and healthcare. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" is arranged in a circular fashion around the caduceus symbol.

Public Health Service

Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850

# JUL 2 3 2002

Mr. Matthew L. Haynie Director of Quality Assurance/ Regulatory Affairs HemaMetrics™ 695 North. 900 West KAYSVILLE UT 84037

Re: K011741 Trade/Device Name: CRIT-LINE III TQA URR Monitor Regulation Number: 21 CFR 876.5820 Regulation Name: Hemodialysis system and accessories Regulatory Class: II Product Code: 78 FIL and 78 MOS Dated: April 20, 2002 Received: April 24, 2002

Dear Mr. Haynie:

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 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 this letter:

| 8xx.1xxx | [phone] |
|----------------------------------|----------------|
| 876.2xxx, 3xxx, 4xxx, 5xxx | [phone] |
| 884.2xxx, 3xxx, 4xxx, 5xxx, 6xxx | [phone] |
| 892.2xxx, 3xxx, 4xxx, 5xxx | [phone] |
| Other | [phone] |

Additionally, for questions on the promotion and advertising of your device, please contact the Office of Compliance at [phone]. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). Other general information on vour responsibilities under the Act may be obtained from the Division of Small Manufacturers. International and Consumer Assistance at its toll-free number [phone] or [phone] 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

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510(k) Number: K011741

Device Name: CRIT-LINE III TQA MONITOR

Indications for Use:

The intended use of the CRIT-LINE III TQA Monitor is as a non-invasive hematocrit, oxygen saturation, and percent change in blood volume monitor. The CRIT-LINE III TQA Monitor also non-invasively estimates access recirculation and non-invasively estimates access blood flow. In addition, the CLM III TQA Monitor calculates an estimated Urea Reduction Ratio based on relative changes in urea nitrogen concentration in the spent dialysate.

JaneyC Brogdon

(Division Sign-Off)
Division of Reproductive, Abdominal,
and Radiological Devices
510(k) Number K011741

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Concurrence of CDRH, Office of Device Evaluation (ODE)

Prescription for Use (Per 21 CFR 801.109)

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Over the Counter Use

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