CN201814554U - Noncontact tonometer detection standardizing device - Google Patents
Noncontact tonometer detection standardizing device Download PDFInfo
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- CN201814554U CN201814554U CN2010205159191U CN201020515919U CN201814554U CN 201814554 U CN201814554 U CN 201814554U CN 2010205159191 U CN2010205159191 U CN 2010205159191U CN 201020515919 U CN201020515919 U CN 201020515919U CN 201814554 U CN201814554 U CN 201814554U
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- eyeball
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- injection tube
- chip microcomputer
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Abstract
A noncontact tonometer detection standardizing device belongs to devices for calibrating noncontact tonometers, and comprises an automatic control system with a single chip microcomputer, a motor type piston driving mechanism and a simulated human cornea which is arranged on a base and forms an eyeball cavity. The rear of the eyeball cavity is communicated with a syringe; a piston is arranged in the syringe and connected with an output rod of the motor type piston driving mechanism; a high-precision pressure sensor is mounted in the eyeball cavity; and output signals of the high-precision pressure sensor are transmitted to the single chip microcomputer of the automatic control system. The noncontact tonometer detection standardizing device has the advantages of high measuring accuracy and better measuring repeatability.
Description
Technical field
This utility model relates to the calibrating installation of tonometer, particularly realizes device that non-contact tonometer is calibrated by the simulation human eye.
Background technology
Non-contact tonometer is a kind of Electronic apparatus of measuring intraocular pressure.Compare with other tonometer, have and directly do not contact patient's cornea, prevent to measure intraocular pressure cause corneal think damage, eye nosocomial infection, reduce advantage such as local anesthesia reaction, and can operate by non-medical staff, be suitable for the census operations of a large amount of crowd's intraocular pressure, now also be applied to clinical more and more.But domestic at present not to the article of corresponding standard verification of non-contact tonometer or assay device instrument, the domestic production that does not also have similar instrument.
The utility model content
The purpose of this utility model provides a kind of non-contact tonometer examination criteria device of measuring accurate height, good reproducibility, to solve the calibration problem of non-contact tonometer.
This novel purpose is achieved in that a kind of non-contact tonometer examination criteria device, comprise, the automatic control system that contains single-chip microcomputer, the motor-type piston drive mechanism, be arranged on the pedestal and constitute anthropomorphic dummy's cornea in eyeball chamber, rear portion, eyeball chamber is communicated with an injection tube, be provided with a piston in the injection tube, piston connects with the take-off lever of described motor-type piston drive mechanism, and the eyeball intracavity is equipped with a high-precision pressure sensor, and the output signal of high-precision pressure sensor transfers to the single-chip microcomputer of described automatic control system.
Also be connected with the buffer chamber of a volume between above-mentioned eyeball chamber and the injection tube greater than the eyeball chamber.
Above-mentioned injection tube rear portion is provided with a passage.
The biomaterial and the thin film technique of this non-contact tonometer examination criteria device (being adjustable intraocular pressure type standard analog human eye) uses advanced make up the basic shell shape of simulating human eye.Utilize gaseous state to change the basic aerodynamic principle and the equation of gas state of following, can reappear the part physical parameter of eyeball.The simulation human eye can provide standard intraocular pressure and cornea reflecting rate.
The anthropomorphic eye of adjustable intraocular pressure pattern can be in 0～60mmHg pressure limit dynamic adjustable, can in non-contact tonometer is measured range ability, carry out multiple spot, pointwise, calibration continuously, the limitation of avoiding several typical value points to calibrate.
Adjustable intraocular pressure type standard analog human eye partly is made up of cornea, eyeball chamber, piston cylinder, piston, pressure transducer, piston actuated, single-chip microcomputer etc.The operating mechanism process is: the Micro Controller Unit (MCU) driving piston-advance, and Compressed Gas forms intraocular pressure, and pressure transducer is gathered intraocular pressure, and shows force value.Force value is as feedback, and single-chip microcomputer driven plunger operation again realizes next force value again.So circulation can realize a plurality of values, and is adjustable continuously.
(1), according to the scope 1～60mmHg of intraocular pressure, can reappear a certain standard intraocular pressure arbitrarily.As: 20mmHg, 40mmHg etc.;
(2), gas-pressure adjustable, realize different intraocular pressure values by the piston Propeling Equipment Control;
(3), pressure monitoring device.The monitoring intraocular pressure is with the national benchmark of being traceable to of intraocular pressure.
Determine design by above-mentioned principle, designed the adjustable intraocular pressure type standard analog human eye of calibration non-contact tonometer, make non-contact tonometer can realize magnitude tracing, measured value is accurately reliable.The important technological parameters of this device:
Accuracy of measurement: be better than 0.2mmHg;
Measurement reproducibility: be better than 1.0%.
Description of drawings
Fig. 1 is this novel structure cutaway view;
Fig. 2 is this new type auto control system block diagram (not shown single-chip microcomputer).
The specific embodiment
Fig. 1 illustrates, this novel automatic control system that contains single-chip microcomputer that comprises, the motor-type piston drive mechanism, be arranged on the pedestal and constitute anthropomorphic dummy's cornea 1 in eyeball chamber 2,2 rear portions, eyeball chamber are communicated with an injection tube 4, are provided with a piston 5 in the injection tube 4, and piston connects with the take-off lever of described motor-type piston drive mechanism, and the eyeball intracavity is equipped with a high-precision pressure sensor 3, and the output signal of high-precision pressure sensor transfers to the single-chip microcomputer of described automatic control system.Also be connected with the buffer chamber 7 (pedestal be buffer chamber forward contraction ledge) of a volume between eyeball chamber 2 and the injection tube 4 greater than the eyeball chamber.The injection tube rear portion is provided with a passage 6.
Eyeball chamber, buffer chamber and injection tube three are communicated with air seal chamber of formation.Valve is arranged, as air inlet on the passage.When the piston-advance Compressed Gas, this valve-closing; When piston retreats, this valve opening air inlet.
Claims (3)
1. non-contact tonometer examination criteria device, comprise, the automatic control system that contains single-chip microcomputer, the motor-type piston drive mechanism, be arranged on the pedestal and constitute anthropomorphic dummy's cornea (1) in eyeball chamber (2), it is characterized in that: rear portion, described eyeball chamber (2) is communicated with an injection tube (4), be provided with a piston (5) in the injection tube (4), piston connects with the take-off lever of described motor-type piston drive mechanism, and the eyeball intracavity is equipped with a high-precision pressure sensor (3), and the output signal of high-precision pressure sensor transfers to the single-chip microcomputer of described automatic control system.
2. according to the described non-contact tonometer examination criteria of claim 1 device, it is characterized in that: also be connected with the buffer chamber of a volume between described eyeball chamber (2) and the injection tube (4) greater than the eyeball chamber.
3. according to claim 1 or 2 described non-contact tonometer examination criteria devices, it is characterized in that: described injection tube rear portion is provided with a passage (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205159191U CN201814554U (en) | 2010-09-03 | 2010-09-03 | Noncontact tonometer detection standardizing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205159191U CN201814554U (en) | 2010-09-03 | 2010-09-03 | Noncontact tonometer detection standardizing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201814554U true CN201814554U (en) | 2011-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205159191U Expired - Lifetime CN201814554U (en) | 2010-09-03 | 2010-09-03 | Noncontact tonometer detection standardizing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201814554U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105615827A (en) * | 2016-03-02 | 2016-06-01 | 上海市计量测试技术研究院 | Non-contact tonometer accuracy testing and calibrating module |
| CN105796183A (en) * | 2016-03-02 | 2016-07-27 | 上海市计量测试技术研究院 | Non-contact-type ophthalmotonometer accuracy inspection and calibration device and inspection and calibration method |
| CN108225930A (en) * | 2017-12-21 | 2018-06-29 | 北京航空航天大学 | The in-vitro simulated device of intraocular pressure with pressure feedback regulatory function |
| CN112129456A (en) * | 2020-09-29 | 2020-12-25 | 中国计量科学研究院 | Measuring head, non-contact tonometer calibrating device and method |
-
2010
- 2010-09-03 CN CN2010205159191U patent/CN201814554U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105615827A (en) * | 2016-03-02 | 2016-06-01 | 上海市计量测试技术研究院 | Non-contact tonometer accuracy testing and calibrating module |
| CN105796183A (en) * | 2016-03-02 | 2016-07-27 | 上海市计量测试技术研究院 | Non-contact-type ophthalmotonometer accuracy inspection and calibration device and inspection and calibration method |
| CN105796183B (en) * | 2016-03-02 | 2018-02-06 | 上海市计量测试技术研究院 | Non-contact tonometer accuracy test calibrating installation and inspection calibration method |
| CN108225930A (en) * | 2017-12-21 | 2018-06-29 | 北京航空航天大学 | The in-vitro simulated device of intraocular pressure with pressure feedback regulatory function |
| CN112129456A (en) * | 2020-09-29 | 2020-12-25 | 中国计量科学研究院 | Measuring head, non-contact tonometer calibrating device and method |
| CN112129456B (en) * | 2020-09-29 | 2022-03-08 | 中国计量科学研究院 | Measuring head, non-contact tonometer calibrating device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151021 Address after: 610056 Sichuan city of Chengdu province Yushuang Road No. 10 Patentee after: Radiation Institute of NIMTT Address before: 610021 Sichuan city of Chengdu province Chenghua District Yushuang Road No. 10 Building Room 204 Patentee before: Sichuan Zhongce Technology Development Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110504 |