K Number
K982800
Manufacturer
Date Cleared
1998-09-22

(43 days)

Product Code
Regulation Number
892.1560
Reference & Predicate Devices
Predicate For
AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP AuthorizedThirdpartyExpeditedreview
Intended Use

Diagnostic Ultrasound imaging or fluid flow analysis of the human body as follows: Fetal, Abdominal, Intraoperative-Cardiac, Pediatric, Neonatal Cephalic, Cardiac (Adult), Cardiac (Pediatric), Transesophageal, Peripheral Vascular. The Ecton Lynx is not intended for ophthalmic, intraoperative neuralgic, or adult cephalic imaging. The system may be used with or without legally marketed ultrasound contrast agents. The system makes no claims regarding the use of ultrasonic contrast agents but provides harmonic imaging capability, receiving echoes at a multiple of the transmit signal and providing electrocardiographic gating that may be used in conjunction with contrast agents.

Device Description

The Ecton Lynx Ultrasound System is a general purpose and cardiac diagnostic ultrasound system. It is a highly portable digital system. Its function is to transmit and acquire ultrasound image data and display it on a monitor. The system operates in 2D, M-Mode, Color Flow Doppler, Doppler Tissue Imaging, and Continuous Wave Doppler modes. The Lynx provides the operator with the ability to perform measurements and calculations on images using established clinical formulae. The Lynx complies with the Track 3 Output Display Standard, providing an automatic display of Mechanical Index and Thermal Index. The Ecton Lynx is designed to operate linear and linear phased array transducers (probes). Four probes are included in the current submission: a 2.5MHz external probe, a 5.0MHz external probe, a 5.0MHz biplane transesophageal probe, and a 5.0MHz monoplane transesophageal probe. The transesophageal probes contain a temperature sensing device that is used to limit the surface temperature to 43 degrees C. The Ecton Lynx includes a stress echocardiography software package that utilizes conventional techniques to capture and format images for stress echocardiography studies. The system provides digital output of images in conformance with the DICOM standard. The Lynx does not utilize lossy compression techniques in image storage or transmission.

AI/ML Overview

The provided document is a 510(k) summary for the Ecton Lynx Ultrasound System, submitted to the FDA in 1998. This type of regulatory submission focuses on demonstrating substantial equivalence to predicate devices already on the market rather than on detailed performance studies of clinical efficacy.

Therefore, the document does not contain the kind of detailed acceptance criteria and study results typically found for devices that involve AI/ML components or require extensive clinical validation studies. The Ecton Lynx Ultrasound System is a general-purpose diagnostic ultrasound system from 1998, predating widespread AI/ML integration in medical imaging devices.

Based on the provided text, I can extract information related to safety standards and acoustic output limits, which serve as a form of acceptance criteria for the device's technical performance and safety. However, typical "device performance" in terms of clinical metrics (e.g., sensitivity, specificity, accuracy) is not mentioned because the 510(k) submission primarily relies on demonstrating equivalence to predicate devices that have established their safety and effectiveness through their prior market clearance.

Here's a breakdown of what can be inferred or confirmed from the text, and what information is not present:


1. Table of Acceptance Criteria and Reported Device Performance

The document focuses on technical and safety compliance rather than clinical performance metrics. The "acceptance criteria" can be interpreted as adherence to established safety standards and acoustic output limits, and functional equivalence to predicate devices in modes of operation.

Acceptance Criteria (Safety/Technical)Reported Device Performance (Compliance)
Safety Standards Compliance
IEC601-1 (Medical Electrical Equipment)The Ecton Lynx has been designed to meet or exceed IEC601-1.
C22.2 No. 601.1 (Canadian Standards)The Ecton Lynx has been designed to meet or exceed C22.2 No. 601.1.
IEC 601-1-2 (Electromagnetic Compatibility)The Ecton Lynx has been designed to meet or exceed IEC 601-1-2.
Acoustic Output Limits (Track 3 Devices)
ISPTA (Maximum)720 mW/cm²
TIS/TIB/TIC (Range)0.1 - 4.0
Mechanical Index (Maximum)1.9
ISPPA (Range)0-700 W/cm²
Temperature Control (Transesophageal probes)Transesophageal probes contain a temperature sensing device that is used to limit the surface temperature to 43 degrees C.
DICOM Standard ComplianceThe system provides digital output of images in conformance with the DICOM standard. The Lynx does not utilize lossy compression techniques in image storage or transmission.
Acoustic Indices DisplayThe Lynx conforms to the Standard for Real-Time Display of Thermal and Mechanical Acoustic Indices on Diagnostic Ultrasound Equipment (AIUM/NEMA 1996) for the on-screen display of mechanical and thermal indices, providing information on potential thermal and cavitation bioeffect mechanisms. A user education program provides information instructing users on machine settings and scanning techniques that allow for examinations to be conducted in accordance with the ALARA (as low as reasonably achievable) principle. Additionally, the system provides an automatic display of Mechanical Index and Thermal Index.

The following information is NOT present in the document provided:

2. Sample sized used for the test set and the data provenance (e.g. country of origin of the data, retrospective or prospective)

  • Not Available. The document does not describe a clinical study with a "test set" of patient data for evaluating diagnostic performance. The submission is based on technical specifications and substantial equivalence to existing devices.

3. Number of experts used to establish the ground truth for the test set and the qualifications of those experts (e.g. radiologist with 10 years of experience)

  • Not Applicable. Since there is no described clinical "test set" or diagnostic performance evaluation, there is no mention of experts establishing ground truth for such a study.

4. Adjudication method (e.g. 2+1, 3+1, none) for the test set

  • Not Applicable. No clinical test set or adjudication process is described.

5. If a multi reader multi case (MRMC) comparative effectiveness study was done, If so, what was the effect size of how much human readers improve with AI vs without AI assistance

  • No. This document describes a diagnostic ultrasound system from 1998, which predates the common integration of AI. No MRMC study or AI assistance is mentioned.

6. If a standalone (i.e. algorithm only without human-in-the-loop performance) was done

  • No. No standalone algorithm performance study is described. The device is an imaging system used by human operators.

7. The type of ground truth used (expert consensus, pathology, outcomes data, etc)

  • Not Applicable. As no clinical performance study is detailed, no ground truth types are mentioned. The ground truth for the submission itself is the technical specifications, compliance with standards, and functional equivalence to predicate devices, rather than clinical diagnostic accuracy.

8. The sample size for the training set

  • Not Applicable. This is not an AI/ML device, so there is no concept of a "training set."

9. How the ground truth for the training set was established

  • Not Applicable. No training set is mentioned.

Summary of the Study (or lack thereof) that Proves the Device Meets Acceptance Criteria:

The study that proves the Ecton Lynx Ultrasound System meets its acceptance criteria is primarily an engineering and regulatory compliance assessment, not a clinical efficacy study in the modern sense.

  • Study Type: The submission is a 510(k) Premarket Notification, which aims to demonstrate "substantial equivalence" to legally marketed predicate devices. This typically involves comparing technical specifications, safety features, indications for use, and operational modes.
  • Methodology: The manufacturer conducted an internal evaluation to ensure the device's design and functionality (including modes like 2D, M-Mode, Color Flow Doppler, DTI, CW Doppler, and Harmonic Imaging) were similar to those of the predicate devices.
  • Compliance: Compliance with international and Canadian safety standards (IEC601-1, C22.2 No. 601.1, IEC 601-1-2) and the AIUM/NEMA standard for acoustic output display was demonstrated through design and testing. Acoustic output limits for ISPTA, TIS/TIB/TIC, Mechanical Index, and ISPPA were measured and reported to be within acceptable ranges for Track 3 devices and consistent with predicate devices.
  • Temperature Control: For transesophageal probes, a temperature sensing device was incorporated to limit surface temperature to 43°C, ensuring patient safety.
  • Image Output: The system's ability to output images in conformance with the DICOM standard without lossy compression was a technical specification.
  • "Proof": The "proof" that the device meets its criteria is the successful review by the FDA (specifically, the Division of Reproductive, Abdominal, Ear, Nose and Throat, and Radiological Devices) leading to a finding of "substantial equivalence" to predicate devices and clearance for market. The FDA's letter mentions a post-clearance special report requirement for acoustic output measurements based on production line devices, indicating an ongoing verification of these key safety parameters.

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K'982802

SEP 2 2 1998

Ecton

Suite 100 110 West Butler Avenue Ambler, Pennsylvania 19002 215 283-1800 Fax 215 283-1809

4.2

510(k) Summary of Safety and Effectiveness 21CFR 807.92

  1. Submitter's Name/Address/Phone/Contact Person:

Christopher B. Knell Director of Engineering Ecton, Inc. Suite 100 110 West Butler Avenue Ambler, Pennsylvania 19002 215 283 1800π 215 283 1809 (fax) c.knell@ieee.com (email)

Date Summary Was Prepared: June 6, 1998

Name of the device, including the trade or 2) proprietary name if applicable, the common or usual name, and the classification name, if known:

Common/Usual Name:

Diagnostic Ultrasound System

Proprietary Name:

Ecton Lynx Ultrasound System

Classification Names:

The FDA has classified Ultrasound Imaging Systems as Class II in 21 CFR:

FR #/ Product Code

892.1550/90IYN Ultrasonic Pulsed Doppler Imaging System 892.1560/90IYO Ultrasonic Pulsed Echo Imaging System 892.1570/ 90ITX Diagnostic Ultrasound Transducer

{1}------------------------------------------------

3) Predicate Devices:

In this 510(k) submission, the legally marketed devices to which we claim substantial equivalence are:

ManufacturerProductK Number
Hewlett Packard Co.Sonos 2500 UltrasoundSystemK934041
ATL, Inc.HDI 3000 UltrasoundSystemK935009
KontronMipron Image ProcessingSystemK891689
Acuson Corp.Sequoia: HarmonicImaging with ContrastK97376
Hewlett Packard Co.Sonos 2500:Harmonic ImagingK964309

Device Description 4)

The Ecton Lynx Ultrasound System is a qeneral purpose and cardiac diagnostic ultrasound system. It is a highly portable digital system. Its function is to transmit and acquire ultrasound image data and display it on a monitor. The system operates in 2D, M-Mode, Color Flow Doppler, Doppler Tissue Imaging, and Continuous Wave Doppler modes. The Lynx provides the operator with the ability to perform measurements and calculations on images using established clinical formulae. The Lynx complies with the Track 3 Output Display Standard, providing an automatic display of Mechanical Index and Thermal Index.

The Ecton Lynx is designed to operate linear and linear phased array transducers (probes). Four probes are included in the current submission: a 2.5MHz external probe, a 5.0MHz external probe, a 5.0MHz biplane transesophageal probe, and a 5.0MHz monoplane transesophageal probe. The transesophaqeal probes contain a temperature sensing device that is used to limit the surface temperature to 43 degrees C.

The Ecton Lynx includes a stress echocardiography software package that utilizes conventional techniques to capture and format images for stress echocardiography

4.2 Summary of Safety and Effectiveness

{2}------------------------------------------------

studies. The system provides digital output of images in conformance with the DICOM standard. The Lynx does not utilize lossy compression techniques in image storage or transmission.

The Ecton Lynx has been designed to meet or exceed the following safety standards:

IEC601-1: International Electrotechnical Commission, Medical Electrical Equipment

C22.2 No. 601.1: Canadian Standards Association, Medical Electrical Equipment

IEC 601-1-2 International Electrotechnical Commission, Collateral Standard: Electromagnetic Compatibility

5) Indications for Use / Intended Use

The Ecton Lynx is intended for adult and pediatric cardiac, intraoperative cardiac, peripheral vascular, abdominal, fetal, pediatric and neonatal cephalic imaging. The Lynx is not intended for ophthalmic, intraoperative neuralgic, or adult cephalic imaging. The system may be used with or without legally marketed ultrasound contrast agents. The system makes no claims regarding the use of ultrasonic contrast agents but provides harmonic imaging capability, receiving echoes at a multiple of the transmit signal and providing electrocardiographic gating that may be used in conjunction with contrast agents. Indications for use include:

· Adult and pediatric cardiac studies usinq external probes.

· Intraoperative adult and pediatric (size permitting) cardiac studies using a transesophageal probe.

Intraoperative adult and cardiac studies using a . sheathed "external" probe.

. Adult and pediatric (size permitting) cardiac studies using a transesophageal probe.

· Abdominal studies.

· Pediatric studies to detect abnormalities in organs, superficial or bony structures.

{3}------------------------------------------------

· Neonatal cephalic studies.

Peripheral vascular studies including cerebrovasculature and extremeties.

Fetal studies.

6) Technological Characteristics

The Ecton Lynx operates in a manner that is identical to the predicate devices for each scanning mode: piezoelectric material in the transducer is used as an ultrasound generator to transmit sound waves into the body. Reflected sound waves are received by the transducer and converted into electrical signals that are processed and displayed as 2D (B-Mode) or M-Mode images. Doppler shift techniques are used to process signals and display them as 2D color flow velocity maps Doppler Tissue Imaging, or continuous wave spectral Doppler.

The Lynx conforms to the Standard for Real-Time Display of Thermal and Mechanical Acoustic Indices on Diagnostic Ultrasound Equipment (AIUM/NEMA 1996) for the on-screen display of mechanical and thermal indices. This feature provides the user with information on potential thermal and cavitation bioeffect mechanisms. A user education program provides information instructing users on machine settings and scanning techniques that allow for examinations to be conducted in accordance with the ALARA (as low as reasonably achievable) principle.

The acoustic output limits of the Lynx are the same as predicate Track 3 devices:

Acoustic Output Limits*

ISPTA720 mW/cm2(Maximum)
TIS/TIB/TIC0.1 - 4.0(Range)
Mechanical Index1.9(Maximum)
ISPPA0-700 W/cm²(Range)

*the Lynx is not intended for ophthalmic uses.

7 ) Potential Adverse Affects

This device has no known adverse affects on human health when used in the prescribed manner for the intended uses.

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Image /page/4/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo is circular in shape, with the words "DEPARTMENT OF HEALTH & HUMAN SERVICES USA" arranged around the perimeter. In the center of the circle is an abstract symbol that resembles an eagle or other bird in flight. The symbol is composed of three curved lines that suggest the wings and body of the bird.

Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850

SEP 2 2 1998

Ecton, Inc. c/o Robert Mosenkis Citech 5200 Butler Pike Plymouth Meeting, PA 19462

Re: K982800 Ecton Lynx Ultrasound System Regulatory Class: II/21 CFR 892.1560 Product Code: 90 IYO Dated: September 10, 1998 Received: September 11, 1998

Dear Mr. Mosenkis:

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 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). 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.

This determination of substantial equivalence applies to the following transducers intended for use with the Ecton Lynx Ultrasound System, as described in your premarket notification:

Transducer Model Number

  • 2.7 MHz External Transducer
  • 5.0 MHz External Transducer
  • 5.0 MHz Biplane Transesophageal Transducer
  • 5.0 MHz Monoplane Transesophageal Transducer

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 Good Manufacturing Practice requirement, as set forth in the Quality System Regulation (OS) for Medical Devices: General (GMP) regulation (21 CFR Part 820) and that, through periodic OS inspections, the FDA will verify such assumptions. Failure to comply with the GMP regulation may result in regulatory action. In addition, the Food and Drug Administration (FDA) may publish further announcements concerning your device in the Federal Register. Please note: this response to your premarket notification does not affect any obligation you may have under sections 531 and 542 of the Act for devices under the Electronic Product Radiation Control provisions, or other Federal laws or regulations.

{5}------------------------------------------------

Page 2 - Robert Mosenkis

This determination of substantial equivalence is granted on the condition that prior to shipping the first device, you submit a postclearance special report. This report should contain complete information, including acoustic output measurements based on production line devices, requested in Appendix G, (enclosed) of the Center's September 30, 1997 "Information for Manufacturers Seeking Marketing Clearance of Diagnostic Ultrasound Systems and Transducers." If the special report is incomplete or contains unacceptable values (e.g., acoustic output greater than approved levels), then the 510(k) clearance may not apply to the production units which as a result may be considered adulterated or misbranded.

The special report should reference the manufacturer's 510(k) number. It should be clearly and prominently marked "ADD-TO-FILE" and should be submitted in duplicate to:

Food and Drug Administration Center for Devices and Radiological Health Document Mail Center (HFZ-401) 9200 Corporate Boulevard Rockville, Maryland 20850

This letter will allow you to begin marketing your device as described in your 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 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 (301) 594-4591. 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 807.97). Other general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers Assistance at its toll-free number (800) 638-2041 or at (301) 443-6597 or at its internet address "http://www.fda.gov/cdrh/dsmamain.html".

If you have any questions regarding the content of this letter, please contact Robert A. Phillips, Ph.D. at (301) 594-1212.

Sincerely yours,

Elaine A. Szymoniak

Lillian Yin, Ph.D.

Director, Division of Reproductive, Abdominal, Ear, Nose and Throat, and Radiological Devices Office of Device Evaluation Center for Devices and Radiological Health

Enclosures

{6}------------------------------------------------

4.2 / / 4.3

Indications for Use Form

Ecton Lynx Ultrasound System

Diagnostic Ultrasound imaging or fluid flow Intended Use: analysis of the human body as follows:

System Indications

Clinical ApplicationBMCWDColorDopplerAmplitudeDoppler(DopplerTissueImaging)Other(specify)HarmonicImaging
Fetal
Abdominal
Intraoperative-Cardiac
Pediatric
Neonatal Cephalic
Cardiac (Adult)
Cardiac (Pediatric)
Transesophageal
Peripheral Vascular

Additional Comment: The Ecton Lynx does not provide Combined Modes (where more than one scanning mode is active simultaneously.)

New Submission: All Indications New

4.3 p 1

Prescription Use (Per 21 CFR 801.109)

Concurrence of CDRH, Office of Device Evaluation (ODE)

David G. Seaymore

(Division Sign-Off) Division of Reproductive, Abdominal, ENT, and Radiological D

510(k) Number K982800

4.2/4.3 Indications

{7}------------------------------------------------

4.2 / / / 4.3

Indications for Use Form

Ecton Lynx Ultrasound System

Diagnostic Ultrasound imaging or fluid flow Intended Use: analysis of the human body as follows:

2.7 MHz External Transducer

Clinical ApplicationBMCWDColorDopplerAmplitudeDoppler(DopplerTissueImaging)Other(specify)HarmonicImaging
Fetal
Abdominal
Intraoperative-Cardiac
Pediatric
Cardiac (Adult)
Cardiac (Pediatric)
Peripheral Vascular

Additional Comment: The Ecton Lynx does not provide Combined Modes (where more than one scanning mode is active simultaneously.)

New Submission: All Indications New

4.3 p 2

Prescription Use (Per 21 CFR 801.109)

Concurrence of CDRH, Office of Device Evaluation (ODE)

David U. Segner
(Division Sign-Off)

(Division Sign-Off) Division of Reproductive, Abdominal, ENT, and Radiological Dev 510(k) Number

{8}------------------------------------------------

4.2 / / / 4.3

Indications for Use Form

Ecton Lynx Ultrasound System

Intended Use: Diagnostic Ultrasound imaging or fluid flow analysis of the human body as follows:

5.0 MBz External Transducer

Clinical ApplicationBMCWDColorDopplerAmplitudeDoppler(DopplerTissueImaging)Other(specify)HarmonicImaging
Fetal
Abdominal
Intraoperative-Cardiac
Pediatric
Neonatal Cephalic
Cardiac (Adult)
Cardiac (Pediatric)
Transesophageal
Peripheral Vascular

Additional Comment: The Ecton Lynx does not provide Combined Modes (where more than one scanning mode is active simultaneously.)

New Submission: All Indications New

4.3 p 3

Prescription Use (Per 21 CFR 801.109)

Concurrence of CDRH, Office of Device Evaluation (ODE)

Daniel A. Szymer

(Division Sign-Off) Division of Reproductive, Abdominal, ENT, and Radiological Devi

510(k) Number K942800

4.2/4.3 Indications

{9}------------------------------------------------

4.2 / / 4.3

Indications for Use Form

Ecton Lynx Ultrasound System

Intended Use: Diagnostic Ultrasound imaging or fluid flow analysis of the human body as follows:

5.0 MHz Biplane Transesophageal Transducer

Clinical ApplicationBMCWDColorDopplerAmplitudeDoppler(DopplerTissueImaging)Other(specify)HarmonicImaging
Intraoperative-Cardiac
Cardiac (Adult)
Cardiac (Pediatric)
Transesophageal

Additional Comments: Pediatric studies are dependent upon patient size. The Ecton Lynx does not provide Combined Modes (where more than one scanning mode is active simultaneously. )

New Submission: All Indications New

4.3 p 4

Prescription Use (Per 21 CFR 801.109)

Concurrence of CDRH, Office of Device Evaluation (ODE)

Daniel A. Segerson

(Division Sign-Off) (Division of Reproductive, Abdominal, ENT, and Radiological Devic 510(k) Number

{10}------------------------------------------------

4.2 / / 4.3

Indications for Use Form

Ecton Lynx Ultrasound System

Intended Use: Diagnostic Ultrasound imaging or fluid flow analysis of the human body as follows:

5.0 MBz Monoplane Transesophageal Transducer

Clinical ApplicationBMCWDColorDopplerAmplitudeDoppler(DopplerTissueImaging)Other(specify)HarmonicImaging
Intraoperative-Cardiac
Cardiac (Adult)
Cardiac (Pediatric)
Transesophageal

Additional Comments: Pediatric studies are dependent upon patient size. The Ecton Lynx does not provide Combined Modes (where more than one scanning mode is active simultaneously. )

New Submission: All Indications New

4.3 p 5

Prescription Use (Per 21 CFR 801.109)

Concurrence of CDRH, Office of Device Evaluation (ODE)

David H. Segner

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

§ 892.1560 Ultrasonic pulsed echo imaging system.

(a)
Identification. An ultrasonic pulsed echo imaging system is a device intended to project a pulsed sound beam into body tissue to determine the depth or location of the tissue interfaces and to measure the duration of an acoustic pulse from the transmitter to the tissue interface and back to the receiver. This generic type of device may include signal analysis and display equipment, patient and equipment supports, component parts, and accessories.(b)
Classification. Class II (special controls). A biopsy needle guide kit intended for use with an ultrasonic pulsed echo imaging system only is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 892.9.