CN201104873Y - Nystagmus tester - Google Patents
Nystagmus tester Download PDFInfo
- Publication number
- CN201104873Y CN201104873Y CNU2007201250762U CN200720125076U CN201104873Y CN 201104873 Y CN201104873 Y CN 201104873Y CN U2007201250762 U CNU2007201250762 U CN U2007201250762U CN 200720125076 U CN200720125076 U CN 200720125076U CN 201104873 Y CN201104873 Y CN 201104873Y
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- China
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- eyeball
- nystagmus
- stimulating system
- tester
- vibration
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- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
- Eye Examination Apparatus (AREA)
Abstract
The utility model discloses an eyeball vibration testing instrument, which comprises a camera, an image acquisition card, a microprocessing system, and an eyeball stimulating system; wherein, the microprocessing system sends an eyeball stimulation signal to the eyeball stimulating system, which in turn transmits a different stimulation signal to stimulate the eyeball; the digital video camera shoots the eyeball movement images, which are captured into the microprocessing system by use of the image acquisition card, thus completing the acquisition of the eyeball movement images; the eyeball movement images are stored in the microprocessing system and the eyeball movement is then analyzed, so as to display the waveform of the eyeball movement and calculate the eyeball movement data like vibration frequency, amplitude and vibration intensity. By utilizing the video camera, the eyeball vibration testing instrument has the advantages of recording the true motion track of the eyeball, simultaneously guarding against the influences of the skin cutin secretion and myoelectricity, objectively and accurately reflecting the waveform, vibration frequency, amplitude and vibration intensity of the eyeball vibration, and discerning the deflection of the eyeball as precise as down to one minute.
Description
Technical field
This utility model belongs to the Medical Instruments correlative technology field, especially about the test instrunment of eyeball aspect, specifically, relates to a kind of nystagmus tester.
Background technology
Nystagmus is the common sign of central nervous system, visual system, extraocular muscles and inner ear labyrinth illness.Nystagmus due to the different causes of disease has the different forms of expression, and it is write down exactly, distinguishes, following up a case by regular visits to after will helping the cause of disease and treating.Domestic and international most of medical institutions write down nystagmus with EOG (electro-oculogram) at present, what the method write down is interpolar potential differences before and after the eyeball, the just relative variation of eyeball position of reflection, can only effectively divide the eyeball vertical deflection about the eyeball horizontal deflection and 5 that picks out about 3 degree is spent, because electrode is placed on the skin, skin resistance can change because of the secretion of skin keratin in using, cause signal of telecommunication instability, this potential difference also can be subjected to the interference of myoelectricity in addition, and these all can have influence on the accuracy of record.
Summary of the invention
A purpose of the present utility model is to overcome above-mentioned deficiency of the prior art, and providing a kind of does not stimulate skin, can the nystagmic nystagmus tester of accurate recording.
For achieving the above object, nystagmus tester of the present utility model comprises video camera, image pick-up card, microprocessing systems and eyeball stimulating system,
The eyeball stimulus signal of microprocessing systems output is given the eyeball stimulating system, and the eyeball stimulating system sends different stimulus signals stimulates eyeball;
Digital video camcorder is taken the ocular movement image, utilizes image pick-up card that the eye movement image acquisition is entered microprocessing systems, thereby finishes the collection of ocular movement image;
In microprocessing systems, storage ocular movement image is also analyzed the motion of eyeball, shows oculomotor waveform, calculates nystagmus data such as shake frequency, amplitude, shake are strong.
The nystagmus tester is the real movement locus of eyeball by camera record, simultaneously, can not be subjected to the skin keratin secretion, the influence of myoelectricity, can be objective, accurately reflect that nystagmic waveform, shake frequency, amplitude, shake are strong, can tell 1 minute eyeball deflection.
In one embodiment, the eyeball stimulating system comprises active stimulator and automatic runner assembly, and active stimulator is installed on the automatic runner assembly, according to test event, rotates active stimulator, and can be the person of being looked provides the sensation target of different directions to indicate.
In another embodiment, the eyeball stimulating system can be made up of display, can be eyeball image and literal stimulus signal are provided.
Description of drawings
Fig. 1 is the theory diagram of this utility model nystagmus tester;
Fig. 2 is a kind of specific embodiment structure chart of eyeball stimulating system shown in Figure 1;
Wherein, 1-digital video camcorder, 2-image pick-up card, 3-microprocessing systems, 4-display system, 5-eyeball stimulating system, the active stimulator of 51-, the automatic runner assembly of 52-, 6-eyeball
The specific embodiment
Below in conjunction with the specific embodiment, this utility model nystagmus tester is described in further detail.What need point out is that although similar parts appear in the different accompanying drawings, they are endowed similar reference numerals.In addition, in the following description, when perhaps the detailed description of known function that adopts and design can desalinate subject content of the present invention, these were described in here and will be left in the basket.
Fig. 1 is the theory diagram of this utility model nystagmus tester.Among the figure, the nystagmus tester comprises digital video camcorder 1, image pick-up card 2 and microprocessing systems 3, eyeball stimulating system 4; The eyeball stimulus signal of microprocessing systems 3 outputs is given eyeball stimulating system 4, and the eyeball stimulating system sends different stimulus signals stimulates eyeball 5;
Digital video camcorder 1 is taken the ocular movement image, utilizes image pick-up card 2 that the eye movement image acquisition is entered microprocessing systems 3, thereby finishes the collection of ocular movement image;
In microprocessing systems 3, storage ocular movement image is also analyzed the motion of eyeball, shows oculomotor waveform, calculates nystagmus data such as shake frequency, amplitude, shake are strong.
Fig. 2 is a kind of specific embodiment structure chart of eyeball stimulating system shown in Figure 1.Among the figure, eyeball stimulating system 4 comprises active stimulator 41 and automatic runner assembly 42, and active stimulator 41 is installed on the automatic runner assembly 42, according to test event, rotates active stimulator 41, and the stimulus signal that sends different directions stimulates eyeball.
Active stimulator 41 is a plurality of LED lamps of arranging according to certain rules, as the orientation or the target indication of patient's sensation target.In the present embodiment, active stimulator 41 is an arc, and 5 ° are provided with a LED lamp at interval, have three groups that are arranged in parallel, the LED lamp of every group of 19 redness.
Active stimulator 41 is installed on the automatic runner assembly 42, under the control of microprocessing systems 3, it is rotated on vertical.In the present embodiment, active stimulator 41 has 0 °, 45 °, 90 °, 135 ° four orientation angles, thereby in conjunction with arc 5 ° of settings that a LED lamp is set at interval, eyeball stimulating system 4 can provide the stimulus signal of different directions to stimulate eyeball, eyeball is moved the test that provides in all directions.
Nystagmus is checked
Make the experimenter sit up straight in eyeball stimulating system the place ahead, a fixed bit is watched 17 positions of the active stimulator of arc LED luminous point respectively attentively, record 5-10 second, calculates nystagmus data such as shake frequency, amplitude, shake are strong
17 positions are respectively dead ahead 33cm, horizontal left avertence 5 degree of 33cm, 10 degree, 15 degree, 20 degree; Horizontal right avertence 5 degree, 10 degree, 15 degree, 20 degree; 33cm vertically goes up inclined to one side 5 degree, 10 degree, 15 degree, 20 degree; Vertical inclined to one side down 5 degree, 10 degree, 15 degree, 20 degree.
With the active stimulator horizontal positioned of arc, can reach record dead ahead 33cm, 33cm left avertence 5 degree, 10 degree, 15 degree, 20 degree by lighting the LED lamp; The purpose of right avertence 5 degree, 10 degree, 15 degree, 20 degree nystagmus.Stimulate screen to rotate to the upright position arc, can reach upward inclined to one side 5 degree of record, 10 degree, 15 degree, 20 degree by lighting the LED lamp; The purpose of inclined to one side down 5 degree, 10 degree, 15 degree, 20 degree.Realize (the 25 °～right 25 ° of scopes in a left side) inspection of patient's nystagmus track of trembling, and measure its vibration frequency and amplitude.The image sampling cycle is not less than 24Hz, expresses shockproofness by E=A (amplitude) * W (vibration frequency).
Traditional EOG (electro-oculogram) writes down nystagmus, what write down is interpolar potential differences before and after the eyeball, the just relative variation of eyeball position of reflection, because electrode is placed on the skin, skin resistance can change because of the secretion of skin keratin in using, cause signal of telecommunication instability, this potential difference also can be subjected to the interference of myoelectricity in addition, and these all can have influence on the accuracy of record.Therefore need counter electrode to settle the position to clean before the inspection, reduce the influence of skin keratin, the position that the while electrode is laid also can influence the result of measurement.This utility model nystagmus tester is simple, convenient, only head need be placed on the eyeball stimulating system to get final product.And the result is more directly perceived for record, and data are truer.
We are as can be seen in sum, this utility model nystagmus tester is through clinical verification, its performance and test result adhere to specification, be a kind of easy to use, automaticity is high, the diagnosis is accurate rapidly, multi-functional, easy to carry, the nystagmus tester that is easy to popularize.
Although above the illustrative specific embodiment of this utility model is described; but should be understood that; the invention is not restricted to the scope of the specific embodiment; to those skilled in the art; as long as various variations appended claim limit and the spirit and scope of the present utility model determined in; these variations are conspicuous, and all innovation and creation that utilize this utility model design are all at the row of protection.
Claims (4)
1, a kind of nystagmus tester is characterized in that, comprises video camera, image pick-up card, microprocessing systems and eyeball stimulating system,
The eyeball stimulus signal of microprocessing systems output is given the eyeball stimulating system, and the eyeball stimulating system sends different stimulus signals stimulates eyeball;
Digital video camcorder is taken the ocular movement image, utilizes image pick-up card that the eye movement image acquisition is entered microprocessing systems, thereby finishes the collection of ocular movement image;
In microprocessing systems, storage ocular movement image is also analyzed the motion of eyeball, shows oculomotor waveform, calculates nystagmus data such as shake frequency, amplitude, shake are strong.
2, nystagmus tester according to claim 1 is characterized in that, described eyeball stimulating system comprises active stimulator and automatic runner assembly, and active stimulator is installed on the automatic runner assembly, according to test event, rotates active stimulator.
3, nystagmus tester according to claim 2, it is characterized in that, described active stimulator, it is the arc that a plurality of LED lamps arranged are according to certain rules formed, as the orientation or the target indication of patient's sensation target, and arc can rotate to diverse location under the runner assembly drive automatically.
4, nystagmus tester according to claim 2 is characterized in that, described active stimulator is a display, can produce different figure and literal under the control of computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201250762U CN201104873Y (en) | 2007-08-29 | 2007-08-29 | Nystagmus tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201250762U CN201104873Y (en) | 2007-08-29 | 2007-08-29 | Nystagmus tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201104873Y true CN201104873Y (en) | 2008-08-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201250762U Expired - Fee Related CN201104873Y (en) | 2007-08-29 | 2007-08-29 | Nystagmus tester |
Country Status (1)
| Country | Link |
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| CN (1) | CN201104873Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104814717A (en) * | 2015-04-14 | 2015-08-05 | 赵桂萍 | Detecting method and device for compensation type variation position error elimination nystagmus total graph |
| CN109303546A (en) * | 2017-07-26 | 2019-02-05 | 车诚 | Vision testing method and system |
| CN112370011A (en) * | 2020-11-12 | 2021-02-19 | 奥佳华瑞(厦门)医疗科技有限公司 | Eyeball mobility detector |
| CN114007488A (en) * | 2019-06-27 | 2022-02-01 | 卡尔蔡司光学国际有限公司 | Method and apparatus for determining contrast sensitivity threshold |
-
2007
- 2007-08-29 CN CNU2007201250762U patent/CN201104873Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104814717A (en) * | 2015-04-14 | 2015-08-05 | 赵桂萍 | Detecting method and device for compensation type variation position error elimination nystagmus total graph |
| CN104814717B (en) * | 2015-04-14 | 2016-09-07 | 赵桂萍 | The detection method of the nystagmus full figure of a kind of compensation elimination variant position error and device |
| CN109303546A (en) * | 2017-07-26 | 2019-02-05 | 车诚 | Vision testing method and system |
| CN114007488A (en) * | 2019-06-27 | 2022-02-01 | 卡尔蔡司光学国际有限公司 | Method and apparatus for determining contrast sensitivity threshold |
| CN112370011A (en) * | 2020-11-12 | 2021-02-19 | 奥佳华瑞(厦门)医疗科技有限公司 | Eyeball mobility detector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080827 Termination date: 20090929 |