CN102920428B - Portable tenonometer - Google Patents
Portable tenonometer Download PDFInfo
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- CN102920428B CN102920428B CN201210277783.9A CN201210277783A CN102920428B CN 102920428 B CN102920428 B CN 102920428B CN 201210277783 A CN201210277783 A CN 201210277783A CN 102920428 B CN102920428 B CN 102920428B
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- imageing sensor
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Abstract
The invention relates to a contact type portable tenonometer. The portable tenonometer comprises a shell, a probe, a first light source, an image sensor, strain foils, a microprocessor, a power supply and a display memory, wherein the probe has a round left end face and is made of a transparent optical material; at least two elastic beams are fixedly arranged at the right end of the probe; each elastic beam is perpendicular to the axis of the probe; the outer end of each elastic beam is fixedly connected to the left end of the shell; strain foils are arranged on the elastic beams; the image sensor is positioned at the right end of the probe; the axis of the receiving window of the image sensor coincides with the axis of the probe; the diameter of the receiving window is equal to or smaller than the diameter of the left end face of the probe; the first light source is arranged at the periphery of the receiving window; and the strain foils, the image sensor and the display memory are connected with the microprocessor. By the portable tenonometer, a plurality of intraocular pressure values can be detected continuously and dynamically, so that measurement errors can be effectively prevented when the tenonometer sways or a measured person shakes.
Description
Technical field
The present invention relates to a kind of tonometry device, particularly relate to the portable tonometry device of a kind of contact.
Background technology
Intraocular pressure is the size that eyeball content (aqueous humor, crystalline lens, vitreous body, blood) acts on wall of eyeball unit volume pressure.Long term ocular voltage rise height can cause optic nerve ischemia, tolerance under identical intraocular pressure level reduces, cause neurodegeneration, the signal of telecommunication of changing through retina can not transmit and stimulate brain occipital lobe visual centre smoothly, finally causes corresponding irreversibility defect of visual field.Intraocular pressure is usually closely related with multiple oculopathy.At present, glaucoma is to occupy No. second irreversible blinding oculopathy in the whole world, and according to statistics, approximately there are Endothelium in Patients with Primary Glaucoma more than 6,700 ten thousand people in the whole world, and China has 5,000,000 glaucoma patients at present at least, and wherein 790,000 people lose the sight of both eyes.The prevalence of this ophthalmic increases with age growth.Glaucoma raises with pathologic intraocular pressure, irreversibility optic atrophy, and defect of visual field is feature, is having a strong impact on patient's quality of life.In China, sickness rate is 0.21%-1.64%, and blind rate 10%-20% is one of healthy principal disease of harm middle-aged and elderly people (55-70 year).Preventing glaucoma is the most frequently used is also the most effective mode, measures exactly patient's intraocular pressure, controls the rising of intraocular pressure with medicine.
Traditional has two kinds of methods, i.e. implanted and non-built-in mode with tonometer tonometry.Although implanted can directly be measured intraocular pressure, owing to being difficult to clinically to have operability, therefore clinical what must rely on is the indirect measurement method of non-built-in mode.Tonometer on ordinary meaning all can be defined as non-built-in mode and indirectly measure.Current prevailing non-built-in mode is indirectly measured and is mainly contained two kinds, and the one, indentation tonometers, another is planishing type tonometer.Indentation tonometers arrives eyeball by probe end ejection air-flow conventionally, is pressed sunken that moment obtains intraocular pressure at eyeball.This method is owing to not having the instrument on practical significance directly to contact with eyeball, thereby avoided the cross infection of some diseases, also avoided the anesthesia to cornea simultaneously, but due to its expensive cost, lack good precision, operation skill to operator is had relatively high expectations, and may corneal produces unnecessary injury and need to safeguard frequently that all to make it not be widely used in clinical, for example Schiotz tonometer; The appearance (as cornea) that planishing type tonometer is pressed eyeball by probe is to certain area and obtain corresponding pressure, thereby obtains intraocular pressure.
Chinese patent CN202161301U discloses a kind of applanation tonometer, as shown in Figure 1, comprise gage outfit 1 ', measure connecting rod 2 ', fork 3 ', swinging axle 4 ', the gimbal lever 5 ', swing arm 6 ', spring, tooth bar 8 ', gear 16 ', gear shaft 9 ', knob 10 ', shell bracing or strutting arrangement 17 ' forms, between measurement connecting rod 2 ' and swinging axle 4 ', be provided with elastic part 11 ', elastic part 11 ' two ends are fixedly connected on to be measured on connecting rod 2 ' and swinging axle 4 ', foil gauge 12 ' is fixedly connected on elastic part 11 ', foil gauge 12 ' is measured display device 13 with foil gauge and is electrically connected, to show the measurement result of foil gauge 12 '.When measuring, first by rotary knob 10 ', gage outfit 1 ' is tilted towards the measured direction, to guarantee that gage outfit 1 ' can not produce and impact the cornea of the measured when measuring.Rotary knob 10 ' can make gear shaft 9 ' rotate, and gear 16 ' the band carry-over bar 8 ' on gear shaft 9 ' is mobile, and it is mobile that tooth bar 8 ' is pushing away swing arm 6 ' again, thereby drive fork 3 ', and fork 3 ' is rotated around swinging axle 4 '.Elastic part 11 ', measurement connecting rod 2 ', gage outfit 1 ' rotate along with swinging axle 4 ' together, thereby make gage outfit 1 ' flatten cornea.By the slit lamp microscope observation of tonometer outside, can judge that cornea is just in time driven plain.Now foil gauge 12 ' extracts the deflection of elastic part 11 ', then through foil gauge, measures amplification, analog digital conversion, the calculating of display device 13 ', then draws measurement result, and shows.But this intraocular pressure is counted Ge Demanshi tonometer, adopt while measuring in this way, can only measure the intraocular pressure of specific applanation area, only measure intraocular pressure value one time, when gauger's lack of skill, cause measuring device to rock, or while there is shake because of anxiety in the measured, may cause the result of measuring to occur error.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of portable intraocular pressure meter simple in structure, easy and simple to handle, when measuring intraocular pressure, a plurality of intraocular pressure values of detection of dynamic continuously, have effectively avoided measuring device to rock or during the measured shake, have measured the situation that occurs error.
The portable intraocular pressure meter of the present invention, comprise housing, probe, the first light source, imageing sensor, foil gauge, microprocessor, power supply and display-memory, the left side of probe is circular, by transparent optical material, made, the right-hand member of probe is installed with at least two spring beams, every spring beam is all perpendicular to the axis of popping one's head in, the outer end of every spring beam is all fixedly connected on the left end of housing, foil gauge is installed on spring beam, the first light source, imageing sensor, microprocessor, power supply and display-memory are installed in housing, imageing sensor is positioned at the right side of probe, the axis of the receive window of imageing sensor and the dead in line of probe, the diameter of the receive window of imageing sensor is equal to or less than the diameter of probe left side, the first light source is arranged on receive window around, microprocessor, display-memory, foil gauge, imageing sensor is all connected with power supply with the first light source, foil gauge, imageing sensor is all connected with microprocessor with display-memory.
The portable intraocular pressure meter of the present invention, the left side of the receive window of wherein said imageing sensor is provided with convex lens, the axis of convex lens and the dead in line of probe.
The portable intraocular pressure meter of the present invention, the right-hand member fixed cover of wherein said probe is equipped with annular carrier, the inner of each spring beam is all fixedly mounted on probe by carrier, the left end of housing is provided with at least two brace summers, brace summer is parallel with spring beam, every brace summer is all positioned at the left side of spring beam, and the adjustment screw that regulates distance between brace summer and carrier is installed in the inner of brace summer.
The portable intraocular pressure meter of the present invention, wherein said the first light source ringwise, is sleeved on the receive window of imageing sensor.
The portable intraocular pressure meter of the present invention, wherein said probe is made by glass or resin.
The portable intraocular pressure meter of the present invention, also comprises loudspeaker, and loudspeaker are fixedly mounted in housing, and loudspeaker are connected with microprocessor.
The portable intraocular pressure meter of the present invention, also comprise secondary light source, display and half anti-mirror, display and half anti-mirror are fixedly mounted in housing, and half anti-mirror is positioned at the left side of convex lens, and the axis of probe is through half anti-mirror, the axis of half anti-mirror and the axis of probe are in angle of 45 degrees, secondary light source be positioned at half anti-mirror directly over or under, secondary light source is point source, the light of secondary light source transmitting is after half anti-mirror reflection, incide the center of the left side of probe, imageing sensor is connected with display.
The portable intraocular pressure meter of the present invention difference from prior art is that the present invention passes through the first source emissioning light line, when probe left side does not contact with the summit of the accurate vaulted cornea of eyeball, vertical incidence light reflects in probe side and left side, inject in air, at eyeball surface and other object surface, form reflected light, wherein part reflected light is injected probe from the left side of probe together with surround lighting, light is through after popping one's head in, incide in imageing sensor, what imageing sensor detected is white portion, when probe left side starts to contact with the summit of the accurate vaulted cornea of eyeball, the position now contacting with probe is eyeball, the light that probe left side and eyeball contact site office the first light source send is injected in eyeball, simultaneously, the position of the probe left side contacting with eyeball does not enter imageing sensor after having light to pass probe, imageing sensor detects dark circular image, when continuing to depress probe, applanation area increases gradually, the diameter of the dark circular image that image-position sensor detects increases gradually, in the process of depressing at probe, because the stressed spring beam that makes of probe bends, be arranged on the deflection that foil gauge on spring beam can obtain spring beam, through amplifying, after digital-to-analogue conversion, pass to microprocessor, microprocessor can access flattening pressure after calculating, by imageing sensor and foil gauge, can record dynamically continuously effective applanation area and flattening pressure, after microprocessor, by display-memory, show and store.Therefore, this device, can be according to a plurality of intraocular pressure values of the continuous detection of dynamic of the program of setting on microprocessor when measuring intraocular pressure, have effectively avoided measuring device to rock or during the measured shake, have measured the situation that occurs error.
Below in conjunction with accompanying drawing, the invention will be further described.
Accompanying drawing explanation
Fig. 1 is the front view of the detection of eyeball tension meter of prior art;
Fig. 2 is the front view of the portable intraocular pressure meter of the present invention;
Fig. 3 is the left view of the first light source of the portable intraocular pressure meter of the present invention and the receive window of imageing sensor;
Fig. 4 is the front view of the portable intraocular pressure meter of the present invention while contacting with eyeball;
Fig. 5 a is the image (diameter of dark circular image is 2 millimeters) that imageing sensor detects;
Fig. 5 b is the image (diameter of dark circular image is 4 millimeters) that imageing sensor detects;
Fig. 5 c is the image (diameter of dark circular image is 6 millimeters) that imageing sensor detects;
Fig. 6 is the circuit connecting relation schematic diagram of the portable intraocular pressure meter of the present invention.
The specific embodiment
As shown in Figure 2, the portable intraocular pressure meter of the present invention comprises housing 1, probe the 2, first light source 3, secondary light source 4, imageing sensor 5, foil gauge 6, microprocessor 7, power supply 8, display 9 and display-memory 10.Housing 1 is cylindric, and the left-half of probe 2 is truncated cone-shaped, and the right half part of probe 2 is cylindrical, and probe 2 is made by transparent optical material.Probe 2 is positioned at the left side of housing 1.
Shown in Fig. 4, on the outer circumference surface of the right-hand member of probe 2, fixed cover is equipped with annular carrier 11, on carrier 11, be bolted two spring beams 12 are installed, two spring beams 12 are all perpendicular to the axis of probe 2, and two spring beams 12 are symmetrical arranged about 2 the axis of popping one's head in, the outer end of every spring beam 12 is all welded on the inwall of left end of housing 1, and foil gauge 6 is all installed on the right side of two spring beams 12, and foil gauge 6 is connected with microprocessor 7.In the present embodiment, adopt a pair of foil gauge 6, in the situation that meeting installation requirement, foil gauge 6 should be selected try one's best large size and precision, to meet its range of linearity dynamometry requirement.Foil gauge advantage is that, under identical pressure, the displacement of passing through is less, and relatively high output voltage can be provided; Low price, stable performance; With respect to other tonometer, can simplify the operation course.Left end at housing 1 is provided with two brace summers 13, and brace summer 13 is parallel with spring beam 12, and every brace summer 13 is all positioned at the left side of spring beam 12, and the adjustment screw 14 that regulates distance between brace summer 13 and carrier 11 is installed in the inner of brace summer 13.Certainly, also many brace summers 13 can be set, or many brace summers 13 are interconnected, form annular.The object that brace summer 13 is set is for further stable equilibrium probe and elasticity beam action, can regulate the distance between carrier 11 and brace summer 13 by adjustment screw 14 simultaneously, thereby reaches the object of the initial value that regulates ergometry.When measuring, by rotating adjustment screw 14, the right-hand member of adjustment screw 14 is pressed on carrier 11, adjustment screw 14 applies precompression to spring beam 12, by regulating the size of precompression, deadweight that can balance probe 2, the flattening pressure that foil gauge is measured is more accurate.
A lot of virus can infect by tear, for example, Puli's high (Protein virus) that people find in tear has infectivity, can from a people's eyes, pass through tear contagion to another person, and facts have proved that infected object is not easy to be sterilized, therefore probe 2 is arranged on spring beam 12 by carrier 11, after having measured at every turn, after the bolt that connects spring beam 12 and carrier 11 is backed out, can change easily probe 2.Probe 2 is made by optical glass.In order to reduce costs, the material of probe 2 can select resin cheaply to make, and probe 2 can, with simple mould by its molding, can be produced in batches.
The first light source 3, imageing sensor 5, foil gauge 6, microprocessor 7, power supply 8, display 9 and display-memory 10 are all fixedly mounted in housing 1.Imageing sensor 5 is positioned at the right side of probe 2, the dead in line of the axis of the receive window 15 of imageing sensor 5 and probe 2, the diameter of the receive window 15 of imageing sensor 5 is equal to or less than the diameter of probe 2 left sides, left side at the receive window 15 of imageing sensor 5 is provided with convex lens 16, the axis of described convex lens 16 and probe 2 dead in line, the diameter of receive window 15 diameter of 2 left sides that equals to pop one's head in the present embodiment.As shown in Figure 3, the first light source 3 ringwise, is sleeved on the receive window 15 of described imageing sensor 5.The first light source 3 is for generation of incident illumination, and it can be the light emitting diode that sends visible ray, electric filament lamp or fluorescent lamp.Imageing sensor 5 can be black and white or colored CCD or cmos device, and it includes an analysis circuit, is used for gathering the geometric parameter (area) of dark circular image 17 as shown in Figure 5 a.
Secondary light source 4 is also fixedly mounted in housing 1, half anti-mirror 18 is positioned at the left side of convex lens 16, and half anti-mirror 18 is positioned on the axis of probe 2, the axis of the axis of half anti-mirror 18 and probe 2 in angle of 45 degrees, secondary light source 4 be positioned at half anti-mirror 18 directly over or under, secondary light source 4 is green point source, the light of secondary light source 4 transmittings is after half anti-mirror 18 reflections, can incide the center of the left side of probe 2, in the present embodiment secondary light source 4 be positioned at half anti-mirror 18 directly over, half anti-mirror 18 is from left to right inclined upwardly.Display 9 is connected with imageing sensor 5.By the anti-mirror 18 of secondary light source 4, half and display 9 are set, can judge that whether the axis of probe 2 and the axis of eyeball be coaxial.Secondary light source 4 sends green point-like light, by entering probe 2 along probe 2 axis directions after half anti-mirror 18 reflections, arrive probe 2 left sides, consequent image can receive by imageing sensor 5, and show at display 9, when probe 2 does not contact with eyeball, imageing sensor 5 detects probe 2 left sides and is reflected back, the circular image forming, when probe 2 almost contacts with cornea, imageing sensor 5 detects eyeball surface and is reflected back, another circular image forming, when probe 2 almost contacts with cornea, if the green light rays of incident overlaps through two circular image of cornea and probe 2 left side reflection generations, be that a circular picture appears in 9 of display, illustrate that coaxial case reaches, if there is departing from of two circular image, do not reach coaxial.These can show so that operator observes in display 9.By this display window, can more conveniently judge whether coaxially, meanwhile, visible green point-like light, by probe 2 left side outgoing, also can contribute to operator to find quickly probe 2 and the contact position of cornea by means of the guiding of this light.
Shown in Fig. 6, foil gauge 6, imageing sensor 5 and display-memory 10 are all connected with microprocessor 7.Display-memory 10, display 9, microprocessor 7, the first light source 3, secondary light source 4, foil gauge 6, imageing sensor 5, loudspeaker 19 are all connected with power supply 8.Loudspeaker 19 are fixedly mounted in housing 1, and loudspeaker 19 are connected with microprocessor 7.Microprocessor 7 is responsible for monitoring and calculate the data that all imageing sensors 5 and foil gauge 6 provide.Display-memory 10 is connected with microprocessor 7, and the intraocular pressure value that processing is calculated shows and store, and intraocular pressure value is that flattening pressure is divided by corresponding applanation area institute value.
The operation principle of the portable intraocular pressure meter of the present invention is:
When probe 2 does not contact with eyeball 20, probe 2 left sides of seeing in receive window 15 positions of imageing sensor are bright, be that the image that imageing sensor 5 detects is white image, this be because, the first light source 3 vertical incidence light reflect in probe 2 sides and left side, inject in air, in probe 2 outer formation diffuse-reflectance, wherein part light is injected probe from 2 the left side of popping one's head in together with surround lighting, light passes after probe 2, incide in imageing sensor 5, therefore, what imageing sensor detected is white image.But when probe 2 with during eyeball 20 Corneal Contact, light incident is popped one's head in 2 o'clock, vertical incidence light reflects at a side inner surface of its correspondence, is irradiated to eyeball 20 on together with the light reflecting with 2 left sides of popping one's head in.In contact surface part, large portion light divides and all enters to inject eyeball 20, form the impression between probe 2 and eyeball 20 corneas, imageing sensor 5 detects as dark circular image 17, as shown in Figure 5, simultaneously, corresponding to probe 2 left sides and eyeball 20 noncontact parts, after partly being reflected by eyewall, the light reflecting through pop one's head in 2 sides and probe 2 bottom surfaces can again enter probe 2, planoconvex lens 16 focuses on the receive window 15 that enters imageing sensor 5, it is corresponding to part 21 bright in the detected image of imageing sensor 5, this part from pop one's head in 2 reflect and through reflection or multiple reflections, again enter the light of probe 2, also can illuminate the tear ring 22 of probe 2 and eyeball 20 Corneal Contact edges simultaneously, the image 23 that thereby tear ring 22 can be formed is effectively distinguished with the dark circular image 17 that true impression produces, 5 dark circular image 17 of identification of imageing sensor, and then the precision of raising measurement, for accurately measuring intraocular pressure, provide reliable technological approaches.Surround lighting 24 can better help to realize the impact of the dark circular image 17 that will detect detection of eliminating tear generation.Imageing sensor 5 focuses on the center of the left side of probe 2, is beneficial to receive the dark circular image 17 that comes from impression generation.Fig. 5 a, 5b, 5c have provided the sectional view of the left side of the probe 2 of seeing at probe 2 places, right side, the image that imageing sensor 5 detects.When the light sending when the first light source 3 enters probe, medial wall and left side at probe 2 can reflect, when the center, left side of probe 2 starts to contact eyeball 20, contact portion is dark circular image 17, imageing sensor 5 acquisition of image data pass to data microprocessor 7 simultaneously, along with pressure increases, the diameter of the dark circular image 17 producing can increase gradually, and imageing sensor can constantly gather and transmit data.Fig. 5 a, 5b and 5c have shown respectively along with pressure increases, the image that the left side of the corresponding probe 2 of seeing from imageing sensor 5 positions produces.Meanwhile, the corresponding flattening pressure that foil gauge 6 collects also constantly passes to microprocessor 7 simultaneously, and then provides intraocular pressure value after processing by microprocessor 7.
The portable intraocular pressure meter of the present invention in use, carries out in accordance with the following steps:
The first step: press on and off switch 25, to each several part, provide corresponding voltage, the green beam sending by means of secondary light source in apparatus of the present invention 4, probe 2 is aimed to the top of vaulted cornea on measured's pupil, according to the image in display 9, the vertical direction of fine setting probe 2, makes to pop one's head in 2, eyeball 20 all, on same straight line, is convenient to the accurate measurement of intraocular pressure;
Second step: operator will pop one's head in 2 gently vertically to Corneal Contact, at this moment imageing sensor 5 gathers satisfactory data, passes to microprocessor 7, and microprocessor 7 sends instruction simultaneously, and corresponding pressure data is collected.In the process to pressing down, this device can constantly gather qualified data.In this process, every group of intraocular pressure result corresponding to data all can show on display-memory 10, and temporarily stored by its storage system.
The 3rd step: microprocessor 7 calculates corresponding intraocular pressure value, and simultaneously by the applanation area of the whole process of implementing to measure, flattening pressure, intraocular pressure real time record demonstration.
During for the clinical use of medical treatment, can set 5 groups of data that collection needs, speech horn 19 promptings have gathered.After five times satisfactory results acquisition completes, be averaging, finally store and show.
Above-described embodiment is described the preferred embodiment of the present invention; not scope of the present invention is limited; design under the prerequisite of spirit not departing from the present invention; various distortion and improvement that those of ordinary skills make technical scheme of the present invention, all should fall in the definite protection domain of the claims in the present invention book.
Claims (5)
1. a portable intraocular pressure meter, is characterized in that: comprise housing (1), probe (2), the first light source (3), imageing sensor (5), foil gauge (6), microprocessor (7), power supply (8) and display-memory (10), the distal face of described probe (2) is circular, by transparent optical material, made, the near-end of described probe (2) is installed with at least two spring beams (12), described every spring beam (12) all perpendicular to probe (2) axis, the outer end of every spring beam (12) is all fixedly connected on the far-end of housing (1), foil gauge (6) is installed, described the first light source (3) on described spring beam (12), imageing sensor (5), microprocessor (7), power supply (8) and display-memory (10) are installed in housing (1), described imageing sensor (5) is positioned at the proximal lateral of probe (2), the axis of the receive window (15) of imageing sensor (5) and the dead in line of probe (2), the diameter of the receive window (15) of described imageing sensor (5) is equal to or less than the diameter of probe (2) distal face, described the first light source (3) is arranged on receive window (15) around, described microprocessor (7), display-memory (10), foil gauge (6), imageing sensor (5) is all connected with power supply (8) with the first light source (3), described foil gauge (6), imageing sensor (5) is all connected with microprocessor (7) with display-memory (10),
The distal side of the receive window (15) of described imageing sensor (5) is provided with convex lens (16), the dead in line of the axis of described convex lens (16) and probe (2),
The near-end fixed cover of described probe (2) is equipped with annular carrier (11), the inner of described each spring beam (12) is all fixedly mounted on probe (2) by carrier (11), the far-end of described housing (1) is provided with at least two brace summers (13), described brace summer (13) is parallel with spring beam (12), every brace summer (13) is all positioned at the distal side of spring beam (12), and the adjustment screw (14) that regulates distance between brace summer (13) and carrier (11) is installed in the inner of brace summer (13).
2. portable intraocular pressure meter according to claim 1, is characterized in that: described the first light source (3) ringwise, is sleeved on the receive window (15) of described imageing sensor (5).
3. portable intraocular pressure meter according to claim 2, is characterized in that: described probe (2) is made by glass or resin.
4. portable intraocular pressure meter according to claim 3, is characterized in that: also comprise loudspeaker (19), described loudspeaker (19) are fixedly mounted in housing (1), and loudspeaker (19) are connected with microprocessor (7).
5. portable intraocular pressure meter according to claim 4, it is characterized in that: also comprise secondary light source (4), display (9) and half anti-mirror (18), described display (9) and half anti-mirror (18) are fixedly mounted in housing (1), described half anti-mirror (18) is positioned at the distal side of convex lens (16), the axis of described probe (2) is through half anti-mirror (18), the axis of the axis of described half anti-mirror (18) and probe (2) in angle of 45 degrees, described secondary light source (4) be positioned at half anti-mirror (18) directly over or under, described secondary light source (4) is point source, the light of secondary light source (4) transmitting is after half anti-mirror (18) reflection, incide the center of the distal face of probe (2), imageing sensor (5) is connected with display (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210277783.9A CN102920428B (en) | 2012-08-06 | 2012-08-06 | Portable tenonometer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210277783.9A CN102920428B (en) | 2012-08-06 | 2012-08-06 | Portable tenonometer |
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| CN102920428A CN102920428A (en) | 2013-02-13 |
| CN102920428B true CN102920428B (en) | 2014-11-05 |
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| CN201210277783.9A Expired - Fee Related CN102920428B (en) | 2012-08-06 | 2012-08-06 | Portable tenonometer |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104523223B (en) * | 2014-12-23 | 2017-05-10 | 杭州创辉医疗电子设备有限公司 | Portable intraocular pressure detector and intraocular pressure detection method |
| EP3583889A1 (en) * | 2018-06-18 | 2019-12-25 | Brill Engines, S.L. | A handheld aesthesiometer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4444459C1 (en) * | 1994-12-14 | 1996-02-29 | Jenoptik Technologie Gmbh | Instrument for automatic measurement of compressive force for eye examinations |
| CN1158239A (en) * | 1996-08-01 | 1997-09-03 | 合肥恒星工贸公司 | Miniature intelligent tonometer |
| CN1187760A (en) * | 1995-04-21 | 1998-07-15 | 伯恩哈德·洛 | Ophthalmodynamometer and its process of operation |
| JP2892007B2 (en) * | 1988-04-15 | 1999-05-17 | 株式会社トプコン | Non-contact tonometer |
| CN202714841U (en) * | 2012-08-06 | 2013-02-06 | 淮南师范学院 | Tonometer convenient to take |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6776756B2 (en) * | 2001-05-16 | 2004-08-17 | Marco Ophthalmic, Inc. | Applanation tonometer |
| US20090103047A1 (en) * | 2007-10-23 | 2009-04-23 | Falck Medical, Inc. | Tonometer Using Camera and Ambient Light |
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2012
- 2012-08-06 CN CN201210277783.9A patent/CN102920428B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2892007B2 (en) * | 1988-04-15 | 1999-05-17 | 株式会社トプコン | Non-contact tonometer |
| DE4444459C1 (en) * | 1994-12-14 | 1996-02-29 | Jenoptik Technologie Gmbh | Instrument for automatic measurement of compressive force for eye examinations |
| CN1187760A (en) * | 1995-04-21 | 1998-07-15 | 伯恩哈德·洛 | Ophthalmodynamometer and its process of operation |
| CN1158239A (en) * | 1996-08-01 | 1997-09-03 | 合肥恒星工贸公司 | Miniature intelligent tonometer |
| CN202714841U (en) * | 2012-08-06 | 2013-02-06 | 淮南师范学院 | Tonometer convenient to take |
Non-Patent Citations (1)
| Title |
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| JP第2892007号B2 1989.10.24 * |
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| CN102920428A (en) | 2013-02-13 |
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