Huvitz HNT-1 User Manual
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Huvitz HNT-1 User Manual

Non-contact tonometer
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Non-Contact Tonometer
HNT-1 / 1P
User Manual

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Summary of Contents for Huvitz HNT-1

  • Page 1 Non-Contact Tonometer HNT-1 / 1P User Manual...
  • Page 2 HUVITZ reserves the right to make changes in its products or product specifications at any time and without prior notice, and is not required to update this documentation to reflect such changes.

  • Page 3: Table Of Contents

    ARTS 5.2. E ................21 XPLANATION OF CREEN 5.2.1. Main Screen of HNT-1 ..................21 5.2.2. Main Screen of HNT-1P .................. 27 6. INSTALLATION OF EQUIPMENT & PREPARATION OF MEASUREMENT ....30 7. BASIC OPERATIONS ....................32 7.1. M ..................... 33 EASUREMENT 7.2.
  • Page 4 8. OTHER MODES ......................47 8.1. SETUP M ...................... 47 8.2. R ...................... 61 ESULT 8.3. P HNT-1P) ..............64 ACHY MAGE NLY IN 8.4. ACA M HNT-1P) ................67 NLY IN 8.4.1 Enlarged ACA Image Screen ................. 68 8.5. P .....................

  • Page 5: Introduction

    HNT-1/1P Introduction 1.1. Intended Use The Non-Contact Tonometer HNT-1 is intended to be used to measure the intraocular pressure of the human eye. HNT-1P is also provided measurement of patient’s central corneal thickness, as well as HNT-1’s function. 1.2. Overview The Non-Contact Tonometer HNT-1/1P is indicated for measuring intraocular pressure to aid in the screening and diagnosis of glaucoma.

  • Page 6: Safety Information

    CAUTION United Stateds Federal law restricts this device to the sale, distribution and use by or on the order of an ophthalmologist or optometrist. Safety Information 2.1. Overview Safety is everyone’s responsibility. The safe use of this equipment is largely dependent upon the installer, user, operator, and maintainer.

  • Page 7: Symbol Explanation

    HNT-1/1P NOTE “Note” describes information for the installation, operation, or maintenance of which is important but hazard related if ignored. CAUTION “Caution” indicates the presence of a hazard that could result in minor injury, or property damaged if ignored. 2.2. Symbol Explanation...
  • Page 8 This symbol identifies a safety note. Ensure you understand the function of this control before using it. Control function is described in the appropriate User’s or Service Manual. Hot surface. Identifies the point where the system safety ground is fastened to the chassis. Protective earth connected to conductive parts of Class I equipment for safety purposes.

  • Page 9: Environmental Considerations

    HNT-1/1P 2.3. Environmental Considerations Please avoid the environment below for the operation and storage of the equipment. A place where the equipment can be exposed to water. Do not operate the equipment with wet hand. A place where the equipment can be exposed to direct sunlight.
  • Page 10 Watch out for dust, especially metal pieces from entering the equipment. Do not disassemble the product. Huvitz will not be held responsible for any negligence regarding such action. Do not close the thermal ventilation outlet Do not connect the AC power adapter before all parts are fully assembled.

  • Page 11: Safety Precaution

    3. The equipment must be operated only by, or under direct supervision of properly trained and qualified person/s. 4. Modifications of this equipment may only be carried out by Huvitz’s service technicians or other authorized persons. 5. Customer maintenance of this equipment may only be performed as stated in the User’s Manual and Service Manual.
  • Page 12 Such tampering will forfeit any rights to claim under warranty. 8. The equipment may only be used together with accessories supplied by Huvitz’s. If the customer makes use of other accessories, use them only if there are usability under technical safety aspects has been proved and confirmed by Huvitz or the manufacturer of the accessory.
  • Page 13 HNT-1/1P medical use. Person who connects outside device with input/output signal or other connector has the obligation to take responsibility in accordance to the IEC60601-1-1. Contact local technician or distributor if you have doubts. 18. To avoid electrocution, this device must be connected to the supply power along with protective grounding.
  • Page 14 CAUTION For use of equipment in rated voltage less than 125Vac,minimum 6A,Type SJT or SVT , 18/3AWG,10A, max 3.0m long : One end with Hospital Grade Type, NEMA 5-15P Other end with appliance coupler. For use of equipment in rated voltage less than 250Vac,minimum 6A,Type SJT or SVT , 18/3AWG,10A, max 3.0m long : One end terminated with blade attachment plug(HAR) Type, NEMA 6-15P.

  • Page 15: Charateristics

    8. Intraocular pressure of both eyes is measured by auto alignment function. 9. With auto-tracking and auto shot, HNT-1/1P allows easy and accurate measurement. 10. HNT-1P is the model combining non-contact tonometer and pachymeter in one unit.

  • Page 16: Note For Use

    So, please do not use them. 8. In case of moving Non-Contact Tonometer HNT-1/1P, carry it holding the lower part of machine body with both hands as fixing the stage after switching the machine off all the time.
  • Page 17 HNT-1/1P...

  • Page 18: Names And Functions Of Each Part

    Names and functions of each part 5.1. Main Parts Safe switch for protecting patient’s eye will add in device Front Part ① LCD Touch Screen : Selectiong for measurement and function parts ② Operation Lamp : Indicates whether or not the electric power is on ③...
  • Page 19 HNT-1/1P ⑤ Joystick Lever (Operation Lever) : A lever for moving object to the front and back, left and right, and up and down ⑥ Stage Fixation Lerver : A lever for fixating stage ⑦ Safety Button : Safety distance establishment between patient and device Back Part ①...
  • Page 20 Bottom Part Not Used ① Power Supply Socket : A socket connecting to exterior power plug ② Serial Interface (RS-232C) Connector : A terminal connecting to the exterior equipment. When exporting the measured data to an external computer with RS-232C connector, connect an interface cable here.

  • Page 21: Explanation Of Main Screen

    HNT-1/1P 5.2. Explanation of Main Screen 5.2.1. Main Screen of HNT-1 [Tracking Mode] ① A toggle button to change the Tracking mode for measurement (MT / AT2D / AT3D)
  • Page 22 [Shooting Mode] ② A toggle button to change the Shooting mode for measurement (MS / AS1 / AS3) [SPC Mode] ③ A toggle button to change the SPC mode for measurement range (SPC30 / SPC60 / 30 / 60) [Chinrest Up/Down Button] ④...
  • Page 23 HNT-1/1P NOTE Press and hold the Clear button for 2 ~ 3 seconds to result the head position. [Print Button] ⑥ Print measurement result [Setting Button] ⑦ Display the user SETUP screen [Result Button] ⑧ Display all measurement data on the Result screen [Compensation mode Button of Cornea Thickness] ⑨...
  • Page 24 [CCT input button] ⑩ Display CCT input dialogbox to input cornea thickness. Cornea thickness compensation is mode to input cornea thickness to device and gets correct data to measure exactly patient's intraocular pressure. Input data of Cornea Thickness [IOP Measurement Data] Display the CIOP, IOP data and IOP average of the last three data [Patient Number (Counter)] Show the patient measurement number...
  • Page 25 HNT-1/1P Focus Indicator Divide into 7 steps by focus position. Too close to the patient`s eye Move the joystick lever to the operator side to move the main body away from the patient`s eye. Optimal state Move the joystick lever to the patient side to move the main body close to the patient`s eye.
  • Page 26 NOTE If the main body unit get out of the working range of auto tracking in the forward and backward, right and left, up and down, the indicator is displayed. According to the indication of the focus indicator, you can manipulate by joystick. Move the joystick lever toward the patient Move the joystick lever toward the operator Move up by rotating the joystick lever to...

  • Page 27: Main Screen Of Hnt-1P

    HNT-1/1P 5.2.2. Main Screen of HNT-1P [Measurement Mode] ① A switch to change the measure mode (TONO / PACHY / TONO-PACHY)
  • Page 28 NOTE Measure mode button can be displayed differently depending on the setting of the Setup mode. According to “Mode Button Toggle” item of the SETUP mode, if ‘ON’ is selected, it will appear only one toggle button such as Otherwise, it will appear three button such as “Mode Button Toggle”...
  • Page 29 HNT-1/1P [Pachy Thumbnail Button] ② Display Pachy Image enlarged Screen (Refer to Section 8.3) [ACA Mode Button] ③ Display ACA(Anterior Chamber Angle) mode screen (Refer to Section 8.4) [Pachy + IOP Measurement Data] ④ Display the Pachy data as well as CIOP, IOP data...

  • Page 30: Installation Of Equipment & Preparation Of Measurement

    UNLOCK. [Release of Lock on Stage Section ] 2. Connection of Power Cable Put Non-Contact Tonometer HNT-1/1P on the table. Insert the power cable into power connector. at the bottom of the main body.
  • Page 31 HNT-1/1P 4. Installation of Printing Paper Please refer to section 9.2.1 regarding the sequence of installation of Printing paper. 5. Input of Message Input the contents desirable to be printed such as name or address of hospital, etc. in the memory of message editing monitor in advance at all times.

  • Page 32: Basic Operations

    Basic Operations WARNING If the following situations happen, contact to the agents of Huvitz after immediately pushing the power switch off, and pulling the power cord out of AC Power connection part. - In case that smoke comes, or strange smell or sound is heard from the equipment.

  • Page 33: Measurement

    HNT-1/1P 7.1. Measurement It is the mode to measure the intraocular pressure and pachymetry. 1. Let the power switch “on” The measurement window as shown in the picture below appear on the screen of monitor as system check is completed.
  • Page 34 “ON” again in 10 seconds after switching it off. If the measurement screen continues not to appear either, please contact to the agents of Huvitz. 3. Check the user SETUP mode. (Refer to Section 8.1) Check and select the diverse functions relating to measurement including intraocular pressure value or printing condition.

  • Page 35: Manual Measurement Mode

    HNT-1/1P 7.2. Manual Measurement Mode As pushing toggle button of the Tracking mode button, it changes to sequentially. If you change “AT2D / AT3D ” to “MT ”, it will operate in the manual measurement mode. ① Adjustment of eye height.
  • Page 36 ② Adjustment of the safety distance between the examinee’s eye and device Adjust the safety distance between the examinee`s eye and device by pressing the safety button as shown in the picture. Adjust the safety distance between the examinee’s eye and device so that the distance is 8 to 10 mm.
  • Page 37 HNT-1/1P eye, use to Safety button. Left the right side eye of examinee appears at the center of monitor screen by slowly pushing and rotating joystick lever. At this time, let the glittering bright dot come into the core of internal array ring.
  • Page 38 Manual mode Measurement Screen HNT-1 • NOTE As the bright dot and pupil can not keep the same axis during the consecutive measurement, the error can be caused for measurement. ④ Measurement Push the measurement button on the joystick lever.
  • Page 39 HNT-1/1P screen of monitor. In case of the consecutive measurement, the result of the previous measurement is indicated. ⑤ Repeated Measurement Measure repeatedly if necessary. The latest measured value is to be indicated every time new measurement is performed. It shall memorize the measured values by 10 times for each left/right eye (except for error).
  • Page 40 Data List of Result Screen ⑦ Print Print the measured result by pushing the PRINT button. The contents selected in SETUP mode is to be printed. Cut the printing paper off from the end of it while lifting it. Put the name of examinee in the blank of NAME if necessary. NOTE As it is printed, the values measured so far are to be removed.
  • Page 41 HNT-1/1P Example of Print Printed page of HNT-1 •...

  • Page 42: Auto Measurement Mode

    7.3. Auto Measurement Mode As pushing toggle button of the Tracking mode button, it changes to sequentially. If you change “MT ” to “AT2D or AT3D ”, it will operate in the Auto measurement mode. AT2D mode: Auto tracking in the right and left up and down directions is actived. AT3D mode: Auto tracking in the forward and backward, right and left, up and down directions is activated.
  • Page 43 HNT-1/1P Auto Mode Measurement Screen HNT-1P • ③ Measurement of Another Eye Measure the left eye according to the same procedure by moving the stage to the right side. As the measurement to both eyes is completed, the value of intraocular pressure is to be indicated on the screen.
  • Page 44 “Auto Print” of the Setup mode The message selected in SETUP mode is to be printed together with the measured data.
  • Page 45 HNT-1/1P Example of Print Pachy mode of HNT-1P •...
  • Page 46 Tono mode of HNT-1P Tono-Pachy mode of HNT-1P • •...

  • Page 47: Other Modes

    HNT-1/1P Other Modes 8.1. SETUP Mode It is to perform many setups relating to measurement, print-out, etc. As pushing Set up Button on the measurement screen, it entered SETUP mode. Setup mode Information (Measure – 1Page) [How to Change Tab]...
  • Page 48 [How to Change Page] As pushing bottom side`s arrow button or page button , it is to enter the next page. [How to change item and content] Select the wanted item on the Screen, and to change he setting by touching on the category to be modified.
  • Page 49 HNT-1/1P  MT - Manually align the device and bring the eye into focus.  AT2D (X, Y) - Right and left, up and down direction (Auto)  AT3D (X, Y, Z) - Forward and backward, right and left, up and down direction on one side.
  • Page 50 Setup mode Information (Measure - 2Page) HNT-1 • HNT-1P •...
  • Page 51 HNT-1/1P SPC Mode : Air Pressure automatic measurement by patient`s intraocular pressure.  SPC 30 : The peak of the air pressue is automatically controlled within the range of 1 to 30 mmHg  SPC 60 : 30 mmHg or more of intraocular pressure.
  • Page 52 Setup mode Information (Data - 1Page) Use Compensation Ratio : Set whether Corneal Thickness compensation should be applied or not. CCT Average : Setup of average value for Cornea Thickness(as reference) Compensation Ratio : Setup of Compensation ratio(0.0001~1.0000)  CIOP(Compensated Intraocular Pressure) Formula Compensation factor = (CCT Average –...
  • Page 53 HNT-1/1P Cornea Thickness : Input data of Cornea Thickness (Left/Right) Input data of Cornea Thickness Setup mode information (Data – 2Page) IOP Offset : Setup of IOP offset value.
  • Page 54 Setup mode information (Print) Print Mode :  STD : The measured result & built-in printer of max ten (10) times are to be printed out  AVG : Only average value is to be outputted printed out  OFF : It is not to be printed out Auto print : In case of measuring in Auto mode, it is to print out the measured result automatically as the each measurement to left / right eyes is completed one after the other.
  • Page 55 HNT-1/1P Setup mode information (Result) Pressure Unit : Selection of pressure unit (mmHg, hPa) Reliability : Set the reliable offset to remove unreliable IOP measured data. If any IOP measured data is out of reliable range (IOP measured average - reliable offset, IOP measured average + reliable offset), then it is considered unreliable.
  • Page 56 Setup mode information (Time) Date Format: Set up of indication sequence of year/month/date Date Set: Set of Y(Year)/M(Month)/D(Day) Time Set: Set of H(Hour)/M(Minutes)/S(Second)
  • Page 57 HNT-1/1P Setup mode information (System- 1Page) LCD Brightness : Adjust Brightness of LCD panel (10% ~ 100%). LCD Color Temperature : Adjust Color Temperature of LCD panel (Cool~Warm 7step). Beep Sound : Set up Beep sound (on/off), Electric beeper sound is occured when the touch button is pressed and the measurement button is pressed.
  • Page 58 Setup mode information (System- 2Page) Sleep Time: Set the sleep time in minute for sleep mode to be turned on. If any user input doesn’t happen during the sleep time chosen, HNT system enters into sleep mode. (LCD monitor is turned off, front LED light flickers to notify that HNT system is in sleep mode).
  • Page 59 HNT-1/1P Setup mode information (Message) Virtual Keyboard [Character Input] : Erase of all input.
  • Page 60 : Erase of text. : Change of line. : Change of uppercase page. : Change of number and special character page. : Save of information. : Exit without save.

  • Page 61: Result Mode

    HNT-1/1P 8.2. Result Mode You can see the measured results (Max ten(10) units of data) stored in memory in this mode. As pushing R/L button in the measurement mode, it can see measurement data. NOTE As pushing print button, the measured result stored in memory is to be printed out through the built-in printer, and it is removed completely for the new measurement It indicates measured Result of Intraocular Pressure, as well as CCT and CIOP value.
  • Page 62 Result mode Screen HNT-1 • HNT-1P •...
  • Page 63 HNT-1/1P NOTE In case of HNT-1P, Data list are divided into each of the measurement mode as Tono, Pachy and Tono-Pachy. Measured data at each measurement mode is entered separately. It can be confirmed by pushing mode items on the left side.

  • Page 64: Pachy Image Mode (Only In Hnt-1P)

    8.3. Pachy Image Mode (Only in HNT-1P) In case of HNT-1P, If you measure the pachy data, you can see a thumbnail of a corneal slit image captured at the upper left corner of the measurement screen. The corneal slit image at last measurement is saved to memory with the measurement data.
  • Page 65 HNT-1/1P Pachy Image mode Screen [Exit Button] As pushing Exit button, return to the main measurement screen. [Fitting Button] As pushing Fitting button, display detected edge area of the cornea. [Clear Button] As pushing Clear button, clear the measured image and data.
  • Page 66 Enlarged Pachy Image Screen [Exit Button] As pushing Exit button, return to the main measurement screen. [Back Button] As pushing Back button, return to the pachy image mode screen. [Send Button] As pushing Send button, send the pachy image to PC. [Fitting Button] As pushing Fitting button, display detected edge area of the cornea.

  • Page 67: Aca Mode (Only In Hnt-1P)

    HNT-1/1P 8.4. ACA Mode (Only in HNT-1P) In case of HNT-1P, it has another feature of pachymetry. That’s the ACA(Anterior Chamber Angle) function. The anterior chamber is the fluid-filled space inside the eye between the iris and the cornea’s innermost surface. Glaucoma is main pathologies in this area.

  • Page 68: Enlarged Aca Image Screen

    8.4.1 Enlarged ACA Image Screen When this captured thumbnail image button is pressed, it entered ACA Image screen. In the ACA Image screen, you can see a full ACA image. Pressing Angle tool button , and measure angle by touching the screen with three points of the angle sequentially.

  • Page 69: Power Saving Mode

    HNT-1/1P [Angle tool Button] As pushing Angle tool button, measure angle by touching the screen with three points. [Send Button] As pushing Send button, send the ACA image to PC. 8.5. Power saving Mode The power saving function begins to operate if you do not operate the machine at all for three (1/3/5) minutes or so.

  • Page 70: Measurement

    Measurement 9.1. Before calling for serviceman In case that abnormality happens or the machine operates abnormally, a warning sign is to be indicated. In this case, perform the settlements below. If the machine does not return to the normal condition in spite of the measures below, contact to the agent where you bought the machine after switching the power off.
  • Page 71 HNT-1/1P There is optical head in position that SAFETY LOCKED Safety lock established. NO TARGET There is no target. EYE NOT FOUND As measured, eye position is not align clearly EYELID COVERED As measured, eyelid was shield. APPL WEAK Applanation signal is feeble.

  • Page 72: Replacement

    9.2. Replacement 9.2.1 Printer paper As red line appears on the paper, immediately change the print paper with new one. ① Open the printer cover ② Cut the paper inserted in the printer, and take it away from it. Take paper roll together with shaft out of the printer, and pull the rotating shaft away from paper roll.

  • Page 73: Chinrest Paper

    ② Push the pins into the holes of chinrest paper. You can put 50 sheets of it on. (130 mm X 40 mm , Hole : 5 mm) ③ Insert the pins into each one of two (2) holes in the chinrest. Replacement Chinrest paper NOTE Please use the chinrest paper that provided by Huvitz Co.,Ltd.

  • Page 74: Replacing Fuse

    9.2.3 Replacing Fuse ① Turn off and raise the Non-Contact Tonometer HNT-1/1P with two arm carefully. ② Remove the Power cord ③ Pick the fuse holder out from the Power inlet ④ Exchange the fuses ⑤ Insert the fuse folder 9.3.

  • Page 75: As Changing The Installation Place Of The Equipment

    HNT-1/1P 9.4. As changing the installation place of the equipment ① Off the power switch of main body. ② Take the power connection cable apart. ③ Move it while maintain the horizontality of it by holding the bottom of the main body.

  • Page 76: Service Information

    Service Information Repair: If the problem is not solved in spite of the settlement according to the contents of chapter 9, please contact to Huvitz’s agent with the information on the following items. Name of Equipment Type: Non-Contact Tonometer HNT-1/1P Typical No.of Equipment: Typical number consisted of 8 digits and characters written...

  • Page 77: Manufacturer

    HNT-1/1P Manufacturer How to Contact HUVITZ Co., Ltd 38, Burim-ro 170beon-gil, Dongan-gu, Anyang-si, Gyeonggi-do, 14055, Republic of Korea Tel: 031-428-9100 (Primary) Fax: 031-477-9022(C/S) http://www.huvitz.com e-mail: svc@huvitz.com EU Representative Medical Device Safety Service GmbH (MDSS) Schiffgraben 41, 30175 Hannover, Germany Tel: +49-511-62628630...

  • Page 78: Emc (Electromagnetic Compatibility) Information

    Manufacturer announcement – electromagnetic waves trouble • Electromagnetic waves trouble HNT-1/1P should be used in the below mentioned electromagnetic wave environment. HNT-1/1P purchaser or user needs to confirm whether HNT-1/1P is used in this type of environment. Trouble test Question of appropriateness...
  • Page 79 Other UT is the a.c. power voltage for before approving the test level. • Electromagnetic waves tolerance HNT-1/1P is to be used in the below mentioned electromagnetic wave environment. HNT-1/1P purchaser or user needs to confirm whether HNT-1/1P is sued at this environment. IEC 60601 Appropriateness...

  • Page 80: Specifications

    Specifications • HNT-1 Intraocular Pressure Measurement Mode Intraocular Pressure Measurement ( AT3D (X, Y, Z), AT2D(X, Y), MT(Manual) ) Measurable range 0~60mmHg, SPC30/60mmHg Measurement Accuracy ±5mmHg Measurement value 1mmHg step (Average:0.1mmHg step) Dimensions 514(W) x 262(D) x 435(H)mm Weight 17.5kg •...
  • Page 81 Pachymetry Measurement ( AT3D (X, Y, Z), AT2D(X, Y), MT(Manual) ) Measurable range 150~1300um Measurement Accuracy ±5um Measurement value 1um step • HNT-1/1P Data Memory Measured value of ten(10) times amount for each left/right eye. Hardware specification Built-in printer Thermal Line printer As stopping to measure for about 1/3/5minutes,...

  • Page 82: Accessories

    ③ Printer Paper ·········································································2 rolls ④ Dust Cover ······················································································1 Piece ⑤ Wrench(2.5mm) ·················································································1 Piece ⑥ Operation’s Manual ··································································1 volume ⑦ Spare Fuse (250V / 3.15A) ·····················································2 units  Accesories can be purchased separately. Please contact your local Huvitz representative or Huvitz customer service.

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