CN202714842U - Dynamic intraocular pressure measurement device - Google Patents
Dynamic intraocular pressure measurement device Download PDFInfo
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- CN202714842U CN202714842U CN 201220387203 CN201220387203U CN202714842U CN 202714842 U CN202714842 U CN 202714842U CN 201220387203 CN201220387203 CN 201220387203 CN 201220387203 U CN201220387203 U CN 201220387203U CN 202714842 U CN202714842 U CN 202714842U
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Abstract
The utility model relates to a contact type intraocular pressure measurement device and provides a dynamic intraocular pressure measurement device. A probe is in a round table shape with a small left end and a big right end, the shape of an inner hole of a sleeve is the same as the shape of the probe, the sleeve is sleeved on the probe in sliding mode, an end face of the small end of the probe is located on the left side of an left end face of the sleeve, and the right end of the sleeve is fixedly connected with the left end of a shell body; a pressure sensor is mounted at the big end of the probe, a first light source and a first image sensor are mounted in the shell body, after a light ray transmitted by the first light source is collimated to be a parallel light beam through a convex lens, the light beam is emitted into the big end of the probe in a vertical incidence mode and enters into the first image sensor after the light beam is totally reflected in the probe, and the pressure sensor, the first image sensor and a display memorizer are all connected with a microprocessor. The dynamic intraocular pressure measurement device can conveniently judge the registration of an axis of the probe and a vertical axis of an eyeball, the operation is simple, measuring accuracy is high, measurement can be rapidly finished, and accurate measurement can also be achieved for patients with poor endurance.
Description
Technical field
This utility model relates to a kind of tonometry device, particularly relates to a kind of contact Dynamic intraocular pressure measuring device.
Background technology
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, the whole world has Endothelium in Patients with Primary Glaucoma more than 6,700 ten thousand people approximately, 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 the pathologic intraocular pressure, the irreversibility optic atrophy, and defect of visual field is feature, is having a strong impact on 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 also to be the most effective mode, measures exactly patient's intraocular pressure, with the rising of medicine control intraocular pressure.
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 the brain occipital lobe visual centre smoothly, finally causes corresponding irreversibility defect of visual field.Traditional has two kinds of methods, i.e. implanted and non-built-in mode with the tonometer tonometry.Although implanted can directly be measured intraocular pressure, owing to be difficult to have operability clinically, therefore clinical what must rely on is the indirect measurement method of non-built-in mode.Tonometer on the 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 the planishing type tonometer.Indentation tonometers arrives eyeball by the terminal ejection of probe air-flow usually, is pressed sunken that moment obtains intraocular pressure at eyeball.This method is not owing to there is the instrument on the practical significance directly to contact with eyeball, thereby avoided the cross infection of some diseases, also avoided simultaneously the anesthesia to cornea, but because its expensive cost, lack preferably precision, operation skill to the operator is had relatively high expectations, and may corneal produces unnecessary injury and needs to safeguard frequently that it can not be widely used in is clinical, for example the Schiotz tonometer; The planishing type tonometer presses the appearance (such as cornea) of eyeball to certain area and pressure corresponding to acquisition by probe, thereby obtains intraocular pressure.This theory is at first proposed by the doctor A.N.Maklakoff of Russia, and representative tonometer is developed by Goldmann.The Goldmann tonometer is considered to " goldstandard ".
Because existing detection of eyeball tension instrument can not judge all whether the axis of the measurement contact of detector overlaps with the longitudinal axis of eyeball, so the intraocular pressure resultant error that detects is larger, operator's skilled operation degree is had relatively high expectations, needing the ophthalmologist by specialty is that patient finishes, and because the alignment function difficulty of detection of eyeball tension instrument is high, to more time-consuming on time, be not easy to measure for restraining oneself the not high patient of degree, measurement error is large.
The utility model content
The technical problems to be solved in the utility model provides a kind of simple to operate, Dynamic intraocular pressure measuring device that certainty of measurement is high, can finish fast measurement, also can realize accurate measurement for restraining oneself the not high patient of degree.
This utility model Dynamic intraocular pressure measuring device, comprise probe, housing, sleeve, the first light source, the first imageing sensor, pressure transducer, microprocessor, display-memory and power supply, probe is truncated cone-shaped left small and right large, made by transparent optical material, the shape of sleeve endoporus is identical with the shape of probe, what sleeve slided is sleeved on the probe, the small end end face of probe is positioned at the left side of the left side of sleeve, the right-hand member of sleeve is fixedly connected with the housing left end, large end at probe is equipped with pressure transducer, the induction end of pressure transducer is pressed on the housing left side, the first light source and the first imageing sensor are installed in housing, after the light planoconvex lens collimation that the first light source sends is collimated light beam, the large end of vertical incidence probe, light beam is after the probe inner total reflection, enter in the first imageing sensor, microprocessor, display-memory, power supply is installed in the housing, microprocessor, display-memory, display, the first imageing sensor be connected light source and all be connected pressure transducer with power supply, the first imageing sensor and display-memory all are connected with microprocessor.
This utility model Dynamic intraocular pressure measuring device, wherein said convex lens are fixedly mounted on the large end of probe, the axis of convex lens and the dead in line of probe.
This utility model Dynamic intraocular pressure measuring device, be installed with the annular metal trim ring on the wherein said inner walls, pressure transducer is the ring-type electric pressure sensor, the position of being combined with periphery in the right side of probe offers annular groove, pressure transducer is fixedly mounted in the groove, and the induction end of pressure transducer contacts with the annular metal trim ring.
This utility model Dynamic intraocular pressure measuring device, wherein said the first light source and the first imageing sensor lay respectively at the both sides of probe axis, and are symmetrical arranged about probe axis.
This utility model Dynamic intraocular pressure measuring device, wherein said the first light source is Light-Emitting Diode.
This utility model Dynamic intraocular pressure measuring device, wherein said probe is made by glass or resin.
This utility model Dynamic intraocular pressure measuring device also comprises loudspeaker, and loudspeaker are fixedly mounted in the housing, and loudspeaker are connected with microprocessor.
This utility model Dynamic intraocular pressure measuring device, the left side of wherein said the first light source also is provided with filter mirror.
This utility model Dynamic intraocular pressure measuring device, also comprise secondary light source, the second imageing sensor, display and half anti-mirror, the second imageing sensor, display and half anti-mirror are fixedly mounted in the housing, the axis of probe passes the second imageing sensor and half anti-mirror, the axis of half anti-mirror and the axis of probe are in angle of 45 degrees, the second imageing sensor is positioned at the right side of half anti-mirror, 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 emission is after half anti-mirror reflection, incide the center of the left side of probe, the second imageing sensor is connected with display, the second imageing sensor, display all is connected with microprocessor, secondary light source, display be connected imageing sensor and be connected with power supply.
This utility model Dynamic intraocular pressure measuring device difference from prior art is that this utility model passes through the first source emissioning light line, when the central point of probe left side does not contact with the summit of the accurate vaulted cornea of eyeball, when parallel rays is injected the optically thinner medium air from the optically denser medium probe, total reflection occurs, parallel rays is after for the first time total reflection occurs in the probe side surface, directive probe left side, for the second time total reflection occurs in the probe left side, then light beam arrives the opposite side surface of probe, total reflection occurs again, at last, the light that the first light source sends is reflected on the first imageing sensor, what the first imageing sensor detected is white portion, when the central point of probe left side begins to contact with the summit of the accurate vaulted cornea of eyeball, be eyeball with the position that probe contacts this moment, optical medium becomes eyeball by air, refractive index changes, do not possess the condition that total reflection occurs, the light of the central spot of probe left side is injected in the eyeball, the first imageing sensor detects semi-circular or annular concealed wire, when continuing to depress probe, applanation area increases gradually, the first imageing sensor detects semi-circular or annular pressing image, make the ring width of semi-circular or annular pressing image even, the axis that guarantees probe overlaps with the longitudinal axis of eyeball, if it is inhomogeneous that microprocessor calculates ring width, then show that at display-memory axis does not overlap prompting, can adjust rapidly probe positions this moment, make dead in line, in the process that probe is depressed, effective applanation area and the flattening pressure that can record by the first imageing sensor and pressure transducer through behind the microprocessor, are shown and are stored by display-memory.This device only need be observed the prompting that display-memory shows when measuring, the axis that can judge probe overlaps with the longitudinal axis of eyeball, and is simple to operate, and certainty of measurement is high, measurement can be finished fast, also accurate measurement can be realized for restraining oneself the not high patient of degree.
Another technical problem to be solved in the utility model provides the coaxial method of a kind of probe axis of controlling above-mentioned Dynamic intraocular pressure measuring device and eyeball longitudinal axis, may further comprise the steps:
A, opening power are powered to measuring device;
B, probe vertical is aimed at the cornea top, make the central point of probe left side aim at the summit of vaulted cornea;
C, will pop one's head in and slowly depress, along with flattening pressure increases gradually, in display, show semi-circular or annular pressing image;
D, make the ring width of semi-circular or annular pressing image even.
By using this control method, can make fast probe axis and eyeball longitudinal axis coaxial, thereby realize accurately measuring fast applanation area and flattening pressure.
The utility model is described in further detail below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is the front view of this utility model Dynamic intraocular pressure measuring device embodiment 1;
Fig. 2 is the enlarged drawing of probe segment among Fig. 1;
Actual pressing image when Fig. 3 a contacts for the summit of the vaulted cornea of central point and eyeball standard of probe left side;
The semi-circular pressing image that display when Fig. 3 b is pressed on the eyeball for popping one's head in Fig. 3 a shows;
Actual pressing image when Fig. 4 a further is pressed in the accurate vaulted cornea of eyeball for the probe left side (the actual diameter that flattens image is 2 millimeters);
The semi-circular pressing image that display when Fig. 4 b is pressed on the eyeball for popping one's head in Fig. 4 a shows;
Actual pressing image when Fig. 5 a further is pressed in the accurate vaulted cornea of eyeball for the probe left side (the actual diameter that flattens image is 4 millimeters);
The semi-circular pressing image that display when Fig. 5 b is pressed on the eyeball for popping one's head in Fig. 5 a shows;
Actual pressing image when Fig. 6 a further is pressed in the accurate vaulted cornea of eyeball for the probe left side (the actual diameter that flattens image is 6 millimeters);
The semi-circular pressing image that display when Fig. 6 b is pressed on the eyeball for popping one's head in Fig. 6 a shows;
Fig. 7 is the circuit connecting relation sketch map of this utility model Dynamic intraocular pressure measuring device;
Fig. 8 is the front view of this utility model Dynamic intraocular pressure measuring device embodiment 2.
The specific embodiment
Embodiment 1:
As shown in Figure 1, this utility model Dynamic intraocular pressure measuring device comprises probe 1, housing 2, sleeve 3, the first light source 4, secondary light source 13, the first imageing sensor 5, the second imageing sensor 14, pressure transducer 6, microprocessor 7, display-memory 8, display 15, half anti-mirror 16, loudspeaker 12 and power supply 9.
The shape of sleeve 3 endoporus is identical with probe 1 shape, being sleeved on the probe 1 of sleeve 3, and probe 1 can endwisely slip in sleeve 3, and when measuring, there is not frictional force in sleeve 3 between 1 with popping one's head in, and perhaps frictional force is very little, reaches negligible degree.The small end end face of probe 1 is positioned at the left side of the left side of sleeve 3, and the right-hand member of sleeve 3 is fixedly connected on cylindrical housings 2 left ends by screw thread.Left end at housing 2 endoporus is provided with annulus platform 18, be installed with annular metal trim ring 19 in the left side of annulus platform 18, annular metal trim ring 19 is relative with the groove 11 that probe is offered on 1 right side, and annular metal trim ring 19 contacts with the induction end of pressure transducer 6.
In order to prevent viral communication, for example, the Puli that people find in tear high (Protein virus) has infectivity, can pass through tear contagion from a people's eyes to another person, therefore and facts have proved that infected object is not easy to be sterilized, will pop one's head in 1 is installed in the sleeve 3, after each measurement is finished, after sleeve 3 backed out from housing 2, can change easily probe 1.Probe 1 is made by optical glass, and in order to reduce cost, the material of probe 1 can select cheaply resin to make.
The first light source 4, the first imageing sensor 5, pressure transducer 6, microprocessor 7, display-memory 8, display 15, loudspeaker 12 and power supply 9 all are fixedly mounted in the housing 2.The first light source 4 is positioned at the right side of convex lens 10 in the present embodiment, and near the focus of convex lens 10, the reverse extending line of the part light that the first light source 4 sends can be through the focus of convex lens 10.The first light source 4 is positioned at the below of probe 1 axis, and the first imageing sensor 5 is positioned at the top of the axis of probe 1, and the first light source 4 and the first imageing sensor 5 are symmetrical arranged about 1 axis of popping one's head in.Also be installed with a baffle plate 20 in the present embodiment in housing 2, baffle plate 20 is positioned at the top of the first light source 4, and the latter half that the light that the first light source 4 is penetrated only enters convex lens 10 obtains semi-circular pressing image.Baffle plate 20 can certainly be set, obtain annular and flatten image.The first light source 4 can be the light emitting diode that sends visible light, and electric filament lamp or fluorescent lamp also can be point source, linear or annular light source.Because stable, efficient, the long-life of light emitting diode, the first light source 4 is adopted as Light-Emitting Diode in the present embodiment.Left side at the first light source 4 also is provided with the filter mirror (not shown), can make the wavelength of the light of injecting probe 1 meet the first imageing sensor 5 needed receiver wavelength ranges.The first imageing sensor 5 can be black and white or colored CCD or cmos device, and the first imageing sensor 5 adopts the one-dimensional linear device, and it includes an analysis circuit, is used for gathering the geometric parameter by semi-circular pressing image, such as the width of radius or ring.After light planoconvex lens 10 collimations that the first light source 4 sends are collimated light beam, the large end of vertical incidence probe 1, light beam is interior through three total reflections at probe 1, after being focused on by convex lens 10, enters in the first imageing sensor 5.In conjunction with shown in Figure 7, microprocessor 7, display-memory 8, display 15, pressure transducer 6, the first imageing sensor 5 and the light source 4 of being connected all are connected with power supply 9, and pressure transducer 6, the first imageing sensor 5 are connected with display-memory and all are connected with microprocessor 7.The visual panel of display 15 and display-memory 8 all is positioned on the housing 2, observes with the person of being convenient for measuring.
The second imageing sensor 14, secondary light source 13 and half anti-mirror 16 also are fixedly mounted in the housing 2, half anti-mirror 16 is positioned at the left side of the second imageing sensor 14, the second imageing sensor 14 and half anti-mirror 16 all are positioned on the axis of probe 1, the axis of the axis of half anti-mirror 16 and probe 1 in angle of 45 degrees, secondary light source 13 be positioned at half anti-mirror 16 directly over or under, secondary light source 13 is green point source, the light of secondary light source 13 emissions is after half anti-mirror 16 reflections, can incide the center of the left side of probe 1, in the present embodiment secondary light source 13 be positioned at half anti-mirror 16 directly over, half anti-mirror 16 from left to right is inclined upwardly.In conjunction with shown in Figure 7, the second imageing sensor 14 is connected with display 15, and the second imageing sensor 14, display 15 all are connected with microprocessor 7, and secondary light source 13, the second imageing sensor 14 all are connected with power supply 9.Loudspeaker 12 are fixedly mounted in the housing 2, and loudspeaker 12 are connected with microprocessor 7.Microprocessor 7 is responsible for monitoring and is calculated the data that all first imageing sensors 5, the second imageing sensor 14 and pressure transducer 6 provide.Display-memory 8 is connected with microprocessor 7, and the intraocular pressure value that processing is calculated shows and stores.
The operation principle of this utility model Dynamic intraocular pressure measuring device is:
In conjunction with shown in Figure 2, behind the part light that the first light source 4 sends (the reverse extending line passes the light of concave lens focus) planoconvex lens 10 collimations, form collimated light beam 21, this moment, collimated light beam 21 was parallel to the axis of probe 2, the collimated light beam 21 that collimated light beam 21 is injected from 1 right-hand member of popping one's head in is after the downside surface generation total reflection of probe 1, directive 1 left side of popping one's head in again, for the second time total reflection occurs in the probe left side, then light beam arrives the uper side surface of probe 1, total reflection occurs again, the light that the first light source 4 sends is reflected on the first imageing sensor 5, and its image is white.The first light source 4 does not send and is these light of collimated light beam by convex lens 10 collimations, perhaps the probe 1 interior behind Multi reflection dyingout, perhaps do not satisfy the condition of total reflection, penetrate 1 from popping one's head in, only have very small amount of light to become stray light and enter in the first imageing sensor 5.When central point 22 places of probe 1 left side begin to contact eyeball 30, shown in Fig. 3 a, the pressing image of contact portion is a contact point 101, the pressing image that detects from 1 right side the first imageing sensor 5 out of popping one's head in, shown in Fig. 3 b, be shown as a semi-ring concealed wire 102, in addition other parts then are bright in the whole visual field, this is because the light of the part except contact point 101 can be by total reflection, what see is bright, the light of 101 parts that only have point of contact can enter eyeball, as shown in Figure 2, because the light at collimated light beam 21 middle parts enters eyeball, the light of collimated light beam 21 both sides enters the first imageing sensor 5 after total reflection, so the image that the first imageing sensor 5 detects is a dark semi-ring concealed wire 102.Increase along with pressure, shown in Fig. 4 a, probe 1 becomes contact surface 103 with the cornea contact portion by contact point 101, and the area of this contact surface (applanation area) can be increasing, originally the light that was total reflection on this corresponding contact surface almost all enters eyeball now, the pressing image of its generation no longer only is semi-ring concealed wire 102, but shown in Fig. 4 b, there is the semi-ring of one fixed width to flatten image 17, this semi-ring flattens image 17 and is obtained by the first imageing sensor 5, and is transferred in the microprocessor 7.Because the increase along with flattening pressure, probe 1 can increase gradually with the contact area of cornea, therefore by the ring width of semi-circular pressing image 17 of generation can be more and more wider along with the increase of flattening pressure, shown in Fig. 5 a, 5b, contact surface 103 increases, the characteristics that axis spreads gradually to both sides centered by the semi-ring concealed wire 102 when semi-ring pressing image 17 presents to begin.When contact surface 103 is increased to situation shown in Fig. 6 a, probe 1 reaches maximum with the contact surface of cornea, namely applanation area reaches maximum, applanation area can not increase thereupon again along with the increase of flattening pressure, shown in Fig. 6 b, at this moment it is maximum that semi-circular pressing image 17 reaches, and namely ring width also reaches corresponding maximum.In measuring process, width by the semi-circular pressing image 17 of continuous detection of dynamic, utilize the linear relationship of ring width and applanation area (contact surface), the relation identical with the radius of contact surface 103 such as the ring width of the semi-circular pressing image 17 in the present embodiment, and then obtain applanation area.Record simultaneously the flattening pressure of the correspondence that obtains by pressure transducer 6, and then calculate intraocular pressure value (flattening pressure is the intraocular pressure value divided by applanation area institute value) by microprocessor 7, and shown and storage by display-memory 8.
But, the longitudinal axis of 1 axis and eyeball produces and departs from if pop one's head in measuring process, then can bring very large impact to the intraocular pressure result, can cause unnecessary error, therefore when measuring, the result who only records in the coaxial situation of the longitudinal axis of the axis of probe 1 and eyeball just near the true value of intraocular pressure, also only has the measuring process that just can begin in the case the back, therefore, be necessary at first to determine whether coaxial.Its method is:
A, opening power 9 are powered to measuring device;
B, the 1 perpendicular alignmnet cornea top of will popping one's head in make the central point 22 of probe 1 left side aim at the summit of vaulted cornea;
C, will pop one's head in and 1 slowly depress, along with flattening pressure increases gradually, at the semi-circular or annular pressing image 17 of display 15 interior demonstrations;
D, make the ring width of semi-circular or annular pressing image 17 even.
When baffle plate 20 was set, the latter half that the light that the first light source 4 penetrates only enters convex lens formed semi-circular pressing image this moment; When baffle plate 20 not being set, the light that the first light source 4 penetrates enters whole convex lenss, and form annular and flatten image this moment.
At this moment can judge by the plug-in of microprocessor 7 and provide prompting by loudspeaker 12, perhaps observe by display-memory 8.If meet coaxial condition, at this moment begin to gather and record data.If do not meet the demands, then need remeasure.Therefore, can avoid unnecessary error to occur, well solved generally deposit in the current portable intraocular pressure meter depart from coaxial and repeatedly measured value that cause can not have good consistency problem, thereby obtain accurate result.
In addition, can also judge whether coaxial by opening secondary light source 13.Secondary light source 13 sends green point-like light, by entering probe 1 along probe 1 axis direction after half anti-mirror 16 reflections, arrive probe 1 left side, consequent image can receive by the second imageing sensor 14, and in display 15 demonstrations, when probe 1 does not contact with eyeball, the second imageing sensor 14 detects probe 1 left side and is reflected back, a circular image that forms, when probe 1 almost contacted with cornea, the second imageing sensor 14 detected eyeball surface and is reflected back, another circular image of formation, when probe 1 almost contacts with cornea, if the green light rays of incident overlaps through two circular image of cornea and the 1 left side reflection generation of popping one's head in, namely a circular picture appears in 15 of display, illustrates that coaxial case reaches, if there is departing from of two circular image, then do not reach coaxial.These can show in display 15 so that the operator observes.By this display window can be more convenient judge whether coaxially, simultaneously, visible green point-like light also can help the operator to find quickly probe 1 and the contact position of cornea by means of the guiding of this light by probe 1 left side outgoing.
When this device is not installed secondary light source 13, half anti-mirror 16 and the second imageing sensor 14, can adopt first method to judge whether the longitudinal axis of the axis of probe 1 and eyeball is coaxial; When secondary light source 13, half anti-mirror 16 and the second imageing sensor 14 are installed, it is coaxial to adopt second method to judge, whether first method can further be confirmed in the operating process coaxial simultaneously, if it is not coaxial, then microprocessor 7 control loudspeaker 12 send prompt tone, and microprocessor 7 will not calculate the intraocular pressure value and be transferred in the display-memory 8.
This utility model Dynamic intraocular pressure measuring device carries out in use in accordance with the following steps:
The first step: press on and off switch 31, provide corresponding voltage to each several part, the green beam that sends by means of secondary light source 13 in this utility model device, probe 1 is aimed at the top of vaulted cornea on measured's pupil, according to the image in the display 15, the vertical direction of fine setting probe 1 all is on the same straight line probe 1, eyeball, is convenient to the accurate measurement of intraocular pressure;
Second step: the operator will pop one's head in 1 gently vertically to Corneal Contact, and at this moment the first imageing sensor 5 gathers satisfactory data, passes to microprocessor 7, and microprocessor 7 sends instruction simultaneously, and corresponding pressure data is gathered.In the process that presses down, this device can constantly gather qualified data.Every group of intraocular pressure result corresponding to data can show at display-memory 8 in this process, and temporarily stored by its storage system.
The 3rd step: microprocessor 7 calculates corresponding intraocular pressure value, and will implement simultaneously applanation area, flattening pressure, intraocular pressure real time record and the demonstration of the whole process of measurement.
During for the clinical use of medical treatment, can gather 6 groups of data that need, speech horn 12 prompting collections are finished.Be averaging after six times satisfactory results acquisition is finished, store at last and show.
Embodiment 2:
The difference of present embodiment and embodiment 1 only is not adopt secondary light source, the second imageing sensor, display and dividing plate, and convex lens 10 is arranged on the left side of the first light source 4.Behind the light planoconvex lens 10 punctual one-tenth collimated light beams that the first light source 4 sends, after probe 1 interior generation total reflection, directly inject in the first imageing sensor 5.Whether in the present embodiment, provide prompting by loudspeaker 12, it is coaxial perhaps to observe the longitudinal axis of the axis of judging probe 1 and eyeball by display-memory 8.
Above-described embodiment is described preferred implementation of the present utility model; be not that scope of the present utility model is limited; under the prerequisite that does not break away from this utility model design spirit; various distortion and improvement that those of ordinary skills make the technical solution of the utility model all should fall in the definite protection domain of this utility model claims.
Claims (9)
1. Dynamic intraocular pressure measuring device, it is characterized in that: comprise probe (1), housing (2), sleeve (3), the first light source (4), the first imageing sensor (5), pressure transducer (6), microprocessor (7), display-memory (8) and power supply (9), described probe (1) is truncated cone-shaped left small and right large, made by transparent optical material, the shape of described sleeve (3) endoporus is identical with the shape of probe (1), what sleeve (3) slided is sleeved on the probe (1), the small end end face of probe (1) is positioned at the left side of the left side of sleeve (3), the right-hand member of sleeve (3) is fixedly connected with housing (2) left end, large end at probe (1) is equipped with pressure transducer (6), the induction end of pressure transducer (6) is pressed on housing (2) left side, the first light source (4) is installed in housing (2), the first imageing sensor (5), after light planoconvex lens (10) collimation that the first light source (4) sends is collimated light beam, the large end of vertical incidence probe (1), light beam is after probe (1) inner total reflection, enter in the first imageing sensor (5), described microprocessor (7), display-memory (8), power supply (9) is installed in the housing (2), described microprocessor (7), display-memory (8), the first imageing sensor (5) be connected light source (4) and all be connected described pressure transducer (6) with power supply (9), the first imageing sensor (5) is connected 8 with display-memory) all be connected with microprocessor (7).
2. Dynamic intraocular pressure measuring device according to claim 1, it is characterized in that: described convex lens (10) is fixedly mounted on the large end of probe (1), the dead in line of the axis of convex lens (10) and probe (1).
3. Dynamic intraocular pressure measuring device according to claim 1 and 2, it is characterized in that: be installed with annular metal trim ring (19) on described housing (2) inwall, described pressure transducer (6) is the ring-type electric pressure sensor, the position of being combined with periphery in the right side of probe (1) offers annular groove (11), described pressure transducer (6) is fixedly mounted in the groove (11), and the induction end of pressure transducer (6) contacts with annular metal trim ring (19).
4. Dynamic intraocular pressure measuring device according to claim 3, it is characterized in that: described the first light source (4) and the first imageing sensor (5) lay respectively at the both sides of probe (1) axis, and are symmetrical arranged about probe (1) axis.
5. Dynamic intraocular pressure measuring device according to claim 4, it is characterized in that: described the first light source (4) is Light-Emitting Diode.
6. Dynamic intraocular pressure measuring device according to claim 5 is characterized in that: described probe (1) is made by glass or resin.
7. Dynamic intraocular pressure measuring device according to claim 6, it is characterized in that: also comprise loudspeaker (12), described loudspeaker (12) are fixedly mounted in the housing (2), and loudspeaker (12) are connected with microprocessor (7).
8. Dynamic intraocular pressure measuring device according to claim 7, it is characterized in that: the left side of described the first light source (4) also is provided with filter mirror.
9. Dynamic intraocular pressure measuring device according to claim 1, it is characterized in that: also comprise secondary light source (13), the second imageing sensor (14), display (15) and half anti-mirror (16), described the second imageing sensor (14), display (15) and half anti-mirror (16) are fixedly mounted in the housing (2), the axis of described probe (1) passes the second imageing sensor (14) and half anti-mirror (16), the axis of described half anti-mirror (16) and the axis of probe (1) are in angle of 45 degrees, described the second imageing sensor (14) is positioned at the right side of half anti-mirror (16), described secondary light source (13) be positioned at half anti-mirror (16) directly over or under, described secondary light source (13) is point source, the light of secondary light source (13) emission is after half anti-mirror (16) reflection, incide the center of the left side of probe (1), the second imageing sensor (14) is connected with display (15), the second imageing sensor (14), display (15) all is connected with microprocessor (7), secondary light source (13), display (15) be connected imageing sensor (14) and be connected with power supply (9).
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| CN 201220387203 CN202714842U (en) | 2012-08-06 | 2012-08-06 | Dynamic intraocular pressure measurement device |
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| CN 201220387203 CN202714842U (en) | 2012-08-06 | 2012-08-06 | Dynamic intraocular pressure measurement device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102813501A (en) * | 2012-08-06 | 2012-12-12 | 淮南师范学院 | Dynamic intraocular pressure measuring device and method for controlling probe to be coaxial with eyeball |
| WO2019204955A1 (en) * | 2018-04-23 | 2019-10-31 | 深圳达闼科技控股有限公司 | Optical detection device and detection method |
-
2012
- 2012-08-06 CN CN 201220387203 patent/CN202714842U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102813501A (en) * | 2012-08-06 | 2012-12-12 | 淮南师范学院 | Dynamic intraocular pressure measuring device and method for controlling probe to be coaxial with eyeball |
| WO2014023088A1 (en) * | 2012-08-06 | 2014-02-13 | 淮南师范学院 | Dynamic intraocular pressure measuring device and method for controlling probe to be coaxial with eyeball |
| CN102813501B (en) * | 2012-08-06 | 2014-04-02 | 淮南师范学院 | Dynamic intraocular pressure measuring device and method for controlling probe to be coaxial with eyeball |
| WO2019204955A1 (en) * | 2018-04-23 | 2019-10-31 | 深圳达闼科技控股有限公司 | Optical detection device and detection method |
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