NICAS(TM) ELECTRODE

K972001 · Ni Medical · DRX · Jul 8, 1997 · Cardiovascular

Device Facts

• Record ID: K972001
• Device Name: NICAS(TM) ELECTRODE
• Applicant: Ni Medical
• Product Code: DRX · Cardiovascular
• Decision Date: Jul 8, 1997
• Decision: SESE
• Submission Type: Traditional
• Regulation: 21 CFR 870.2360
• Device Class: Class 2

Indications for Use

The NICaS™ Electrode is used only in conjunction with the NICaS™ 2001 and all other NICAS™ devices . The function of the NICaS™ Electrode is unchanged from that of the Nicolet Biomedical Instruments Velcro ground strap in the original NICaS™ 2001 cardio-respiratory system, (510(k) K942227) submission, namely, to transmit electrical signals to and from the skin and the NICAS™ cardio-respiratory system.

Device Story

NICaS™ Electrode is a skin-contact accessory for the NICaS™ 2001 Noninvasive Cardio-Respiratory System. Electrodes attach to patient limbs to transmit 1.4 mA, 32.5 KHz bioimpedance signals between skin and the monitoring system. Device enables continuous monitoring for up to 24 hours. System uses bioimpedance principle to calculate hemodynamic and ventilatory parameters. Clinicians use output to assess cardiac function and respiratory status in clinical settings. Benefits include noninvasive, long-term monitoring capability compared to previous strap-type electrodes.

Clinical Evidence

Bench testing and volunteer studies performed. Study 1: 24-hour monitoring on volunteers demonstrated stable cardiac output data. Study 2: Comparison of cardiac output data between new electrodes and predicate Nicolet Biomedical electrodes on normal volunteers showed close correlation.

Technological Characteristics

Foam base, tin laminate conductor, biocompatible conductive gel. Sensing principle: bioimpedance. Energy: 1.4 mA, 32.5 KHz current. Form factor: adhesive electrode for limb attachment. Standards: ANSI/AAMI EC12-1991 (paragraphs 3.2.2.1 and 3.2.1), IEC 601-1-1, UL 544.

Indications for Use

Indicated for monitoring hemodynamic parameters (stroke volume, stroke index, heart rate, cardiac index, cardiac output, total peripheral resistance) and respiratory rate in male and female patients with cardiovascular disorders, including patients undergoing cardiac catheterization, cardiac surgery, or those in intensive care, cardiac care, or rehabilitation units.

Regulatory Classification

Identification

An electrocardiograph electrode is the electrical conductor which is applied to the surface of the body to transmit the electrical signal at the body surface to a processor that produces an electrocardiogram or vectorcardiogram.

Special Controls

*Classification.* Class II (special controls). The device is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 870.9. The special control for this device is the FDA guidance document entitled “Class II Special Controls Guidance Document: Electrocardiograph Electrodes.” See § 870.1(e) for availability information of guidance documents.

Predicate Devices

• Nicolet Biomedical Instruments Velcro ground strap (K942227)
• Katecho, Inc. K-Defib/Pace Pediatric Electrode (K954505)

Submission Summary (Full Text)

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# 1972001

#### 510(k) Summarv

| Submitter's Name: | N.I. Medical, Ltd.<br>22 Maskit Street<br>Herzliya Pituach 46733<br>Israel<br>Phone: [phone] (voice)<br>011 972 9 9513866 (FAX) | JUL - 8 1997 |
|----------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------|
| Contact Person: | Alexander Tsoglin<br>Director of Research and Development | |
| 510(k) Summary Date: | March 28, 1997 | |
| Device Name: | NICaS™ Electrode | |
| Common Name: | Electrode for bipolar method of bioimpedance measurement | |
| Classification Name: | | |
| Predicate Devices: | With respect to indication for use:<br>Nicolet Biomedical Instruments Velcro ground strap included in the<br>NICaS™ 2001 510(k), (K942227)<br>With respect to materials and biocompatability:<br>Katecho, Inc. K-Defib/Pace Pediatric Electrode (K954505) | |

#### Device Description:

The NICaS™ Electrodes are fixed to intact skin of the arms and legs of a patient that is to be monitored for cardiac output. The electrodes employ a biocompatable conductive adhesive to maintain their position for up to 24 hours of continuous monitoring. As stated in the original submission, the electrodes conduct a 1.4 mA, 32.5 KHz current to the skin from the NICaS™ 2001 Noninvasive Cardio-Respiratory System (K942227) which uses the principle of bioimpedance to determine various cardiac parameters including cardiac output. The change from the strap type electrodes included in the original submission will permit longer term patient monitoring. The change in electrodes does not require any changes to the NICAS™ 2001 Noninvasive Cardio-Respiratory System itself. The electrodes continue to be attached to the two identified input connectors of the patient module. The patient module also connects with the computer.

The electrode design is similar to the Katecho, Inc. K-Defib/Pace Pediatric Electrode (K954505). The materials and manufacturing methods are the same, therefore no new biocompatability issues

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are raised. The only change is that the size and shape of the electrode has been modified for ease of use in the clinical setting.

### Intended Use:

The NICaS™ Electrode is used only in conjunction with the NICaS™ 2001 and all other NICAS™ devices .

The function of the NICaS™ Electrode is unchanged from that of the Nicolet Biomedical Instruments Velcro ground strap in the original NICaS™ 2001 cardio-respiratory system, (510(k) K942227) submission, namely, to transmit electrical signals to and from the skin and the NICAS™ cardio-respiratory system.

### Comparison of Technological Characteristics:

Both the NICaS™ Electrode and the Katecho, Inc. K-Defib/Pace Pediatric Electrode are constructed from identical foam base, tin laminate conductor and a biocompatable conductive gel materials. The NICaS™ Electrode is a different shape and smaller size than the Katecho, Inc. K-Defib/Pace Pediatric Electrode. The principles of operation of the NICaS™ 2001 cardiorespiratory system remain unchanged and the electrical current carried by the NICaS™ Electrode is identical to that carried by the Nicolet Biomedical Instruments Velcro ground strap.

### Safety and Effectiveness Information:

The NICaS™ 2001 cardio-respiratory system was designed to meet the IEC 601-1-1 and UL 544 medical safety standards. It was tested and approved by TÜV. In addition, the electrodes conform to ANSI/AAMI EC12-1991 paragraph 3.2.2.1 and ANSVAAMI EC12-1991 paragraph 3.2.1 standards.

### Data:

The performance characteristics of the NICaS™ Electrode have been measured over the full 24 hour recommended period of use in a study employing volunteers. This study was performed by N.I. Medical. It demonstrated that cardiac output data gathered at several points during the 24 hour period are stable throughout the observation period. A second study performed by N.I. Medical on normal volunteers confirmed that cardiac output data gathered using the new electrodes closely correlated with data obtained using the Nicolet Biomedical electrodes.

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Image /page/2/Picture/2 description: The image shows the seal of the U.S. Department of Health and Human Services. The seal features a stylized eagle with three stripes representing the department's mission. The text "DEPARTMENT OF HEALTH & HUM SERVICES • USA" is arranged around the eagle in a circular fashion. The seal is black and white.

Food and Drug Administration 9200 Corporate Eoulevard Rockville MD 20850

... ......

Mr. Barry Sall, R.A.C. PAREXEL International Corporation 1601 Trapelo Road Waltham, Massachusetts 02154

Re: K972001 NICaS™ 2001 Cardio-Respiratory System JUL - 8 1997 Regulatory Class: II (two) Product Code: 74 DRX Dated: May 29, 1997 Received: May 30, 1997

Dear Mr. Sall:

We have reviewed your Section 510(k) notification of intent to market the device referenced above and we have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to 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). 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 (Premarket Approval), it may be subject to such additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 895. A substantially equivalent determination assumes compliance with the current Good Manufacturing Practice requirements, as set forth in the Quality System Regulation (QS) for Medical Devices: General requiation (21 CFR Part 820) and that, through periodic (95) inspections, the Food and Drug Administration (FDA) will verify such Failure to comply with the GMP regulation may result in assumptions. regulatory action. In addition, FDA may publish further announcements concerning your device in the Federal Register. Please note: this response to your premarket notification submission does not affect any obligation you might have under sections 531 through 542 of the Act " for devices under the Electronic Product Radiation Control provisions, or other Federal laws or regulations.

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## Page 2 - Mr. Barry Sall, R.A.C.

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 and additionally 809.10 for in vitro diagnostic devices), please contact the Office of Compliance at [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 807.97). Other qeneral information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers Assistance at its toll-free number [phone] or [phone] or at its internet address "http://www.fda.gov/cdrh/dsmamain.html".

Sincerely yours,

Thomas J. Callahan

Thomas J. Callahan, Ph.D. Director Division of Cardiovascular, Respiratory, and Neurological Devices Office of Device Evaluation Center for Devices and Radioloqical Health

Enclosure

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510(k) Number (if known): -

Device Name: NICaS™ 2001 cardio-respiratory, system

K972001

Indications For Use ... ... . .

The NICas™ electrode is used only in conjunction with the NICaS™ 2001 and all other NICaS™ devices.

The function of the NICas™ electrode is unchanged from that of the Nicolet Biomedical Instruments Velcro ground strap in the original NICas™ 2001 cardio-respiratory system,(510(k)K942227) submission, namely, to transmit electrical signals to and from the skin and the NICaS™ 2001 cardiorespiratory system.

The indications for use of the NICas™ 2001 cardio-respiratory system remain unchanged from those included in the original NICaS™ 2001 cardio-respiratory system, (510(k) K942227), namely, monitoring hemodynamic parameters including stroke volume, stroke index. heart rate, cardiac index, cardiac output, and total peripheral resistance; and the ventilatory parameter, respiratory rate. The device is intended for use in male and female patients with cardiovascular disorders including:

- . patients undergoing cardiac catheterization
- . cardiac surgery patients
- . patients in intensive and cardiac care units
- . patients in rehabilitation centers

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Concurrence of CDRH, Office of Device Evaluation (ODE)

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(Division Sign-Off)
Division of Cardiovascular, Respiratory,

and Neurological Devices

510(k) Number k972001

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Prescription Use (Per 21 CFR 801.109)

OR

Over-The-Counter Use

(Optional format 1-2-96)