CN111973147A - Eyelid pressure detection device - Google Patents

Eyelid pressure detection device Download PDF

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CN111973147A
CN111973147A CN202010682413.8A CN202010682413A CN111973147A CN 111973147 A CN111973147 A CN 111973147A CN 202010682413 A CN202010682413 A CN 202010682413A CN 111973147 A CN111973147 A CN 111973147A
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resistance
layer structure
eyelid
pressure
resistor
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CN111973147B (en
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王开杰
万修华
王进达
张景尚
李猛
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Beijing Tongren Hospital
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Beijing Tongren Hospital
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions

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Abstract

The invention provides an eyelid pressure detection device, which comprises a corneal contact lens, a corneal pressure sensor and a control unit, wherein the corneal contact lens is arranged on the surface of an eyeball and is attached to a cornea; a strain sensor disposed in the contact lens for detecting a strain amount generated when an upper eyelid acts on the contact lens when blinking, and a signal processing module disposed in the contact lens, connected to the strain sensor, for converting the strain amount detected by the strain sensor into an electrical signal and transmitting the electrical signal to an external device; the detection device can accurately measure the pressure of the eyelid, reduce the interference of the intraocular pressure to the pressure of the eyelid during detection, and improve the accuracy and the repeatability of eyelid pressure detection.

Description

Eyelid pressure detection device
Technical Field
The invention belongs to the technical field of instruments for measuring eyelid pressure, and particularly relates to an eyelid pressure detection device.
Background
Structural and functional abnormalities of the eyelids may cause ocular surface dysfunction. Eyelid pressure refers to the tension or pressure exerted by the eyelid on the conjunctiva and cornea. Shear forces and sliding of the eyelids on the ocular surface during the duration of the transient ocular process have an effect on the stability of the tear film, tear volume, conjunctival and corneal epithelial cells, and conjunctival goblet cells. Since shear is difficult to measure quantitatively, eyelid pressure is often measured to assess abnormalities in eyelid function. There is currently no standard eyelid pressure measurement device. There are significant variations in eyelid pressure measured by the different measurement methods and devices, resulting in poor accuracy and repeatability of eyelid pressure detection.
Disclosure of Invention
In order to solve the above technical problems, the present invention provides a novel eyelid pressure detecting device.
One of the technical solutions of the present invention provides an eyelid pressure detecting apparatus, including:
the corneal contact lens is arranged on the surface of an eyeball and is attached to the cornea;
a strain sensor disposed in the contact lens for detecting a strain amount generated when the upper eyelid acts on the contact lens when blinking;
and the signal processing module is configured in the corneal contact lens, is connected with the strain induction sensor, and is used for converting the strain quantity detected by the strain induction sensor into an electric signal and sending the electric signal to an external device.
In a further refinement, the contact lens is configured as a bilayer structure comprising an inner layer structure that conforms to the cornea and an outer layer structure that conforms to the eyelid.
In a further improved scheme, the peripheral edges of the inner layer structure and the outer layer structure are pressed to form a first cavity, a first deformation film which deforms along with pressure is arranged in the first cavity, the first deformation film divides the first cavity into a first sealing area and a second sealing area, the first sealing area is close to the edges of the inner layer structure and the outer layer structure, and transparent liquid is arranged in the first sealing area.
In a further refinement, the radius of curvature of the inner layer structure is the same as the radius of curvature of the cornea, and the radius of curvature of the outer layer structure is greater than the radius of curvature of the cornea.
In a further development, the radius of curvature r of the outer layer structure1Radius of curvature r of inner layer structure2Has a relationship of r1＝(1.2-1.5)r2。
In a further improved scheme, the strain sensing sensor is a wheatstone bridge, and the wheatstone bridge is composed of four resistors which are respectively resistors R1Resistance R2Resistance R3And a resistance RXSaid resistance R1Resistance R2Resistance R3Is a constant value resistor, the resistor RxIs a variable varistor; the resistor RxThe resistor R is attached to one side of the first deformation film, which is positioned in the second sealing area, and has the same width as the first deformation film1、R2And R3Spirally arranged in the edges of the inner layer structure and the outer layer structure.
In a further refinement, the contact lens is configured as a three-layer structure, the three-layer structure including a first layer structure, a second layer structure, and a third layer structure, the edges of the first layer structure, the second layer structure, and the third layer structure being stitched together; a second cavity is formed between the first layer structure and the second layer structure, and a third cavity is formed between the second layer structure and the third layer structure; the first layer structure and the second structure layer are deformation films which deform along with pressure, a second deformation film which deforms along with the pressure is arranged in the third cavity, the third cavity is divided into a third sealing area and a fourth sealing area by the second deformation film, the third sealing area is close to the edges of the second layer structure and the third layer structure, and transparent liquid is arranged in the third sealing area.
In a further improved scheme, the strain induction sensor consists of six resistors R4Resistance R5Resistance R6Resistance RaResistance RbAnd a resistance RcSaid resistance R4Resistance R5And a resistance R6Is a constant value resistorResistance RaResistance RbAnd a resistance RcIs a variable varistor.
In a further development, the resistor R isaEmbedded in the first layer structure and having the same length as the second cavity, and the resistor RbEmbedded in the second layer structure and having the same length as the second cavity, and the resistor RcThe second deformation film is attached to one side of the fourth sealing area; the resistor R4Resistance R5Resistance R6The rounding is arranged in the edges of the first layer structure, the second layer structure and the third layer structure.
In a further refinement, the external device comprises:
the receiving module is used for receiving the pressure data transmitted by the signal processing module;
a calculation module for calculating eyelid pressure Y according to the following formula;
y1- (Y2-Y3) and Y1 is a resistor RcPressure data generated after the change, Y2 is resistance RaPressure data generated after the change, Y3 is resistance RbPressure data generated after the change;
and the display module is used for displaying the calculated eyelid pressure Y.
Compared with the prior art, the eyelid pressure detection device provided by the invention has the advantages that: the eyelid pressure detection device that this application provided is through the structure of injecing the corneal contact lens to set up the mode that the Wheatstone bridge as strain induction sensor was embedded into the corneal contact lens, can accurately measure eyelid pressure, intraocular pressure improves eyelid pressure detection's degree of accuracy and repeatability when reducing the detection to eyelid pressure's interference.
Drawings
Fig. 1 is a bottom view of an eyelid pressure detecting device;
FIG. 2 is a cross-sectional view of a longitudinal section of the eyelid pressure detecting device;
FIG. 3 is a schematic diagram of a strain sensitive sensor in accordance with certain embodiments;
FIG. 4 is a cross-sectional profile view of a corneal contact lens;
FIG. 5 is a longitudinal sectional view of the connection of the second layer structure and the third layer structure;
fig. 6 is a schematic structural diagram of a strain sensitive sensor in accordance with further embodiments.
Detailed Description
The present invention will be described in further detail with reference to the following examples and drawings.
Some embodiments of the present invention provide an eyelid pressure detecting apparatus, including:
the corneal contact lens is arranged on the surface of an eyeball and is attached to the cornea; wherein the corneal contact lens is made of silicon hydrogel and hydrated polymer selected from methyl methacrylate, hydroxyethyl methacrylate or glycerol methacrylate; the diameter of the corneal contact lens is preferably 10-15mm, and the thickness is less than 0.2 mm;
a strain sensor disposed in the contact lens for detecting a strain amount generated when the upper eyelid acts on the contact lens when blinking;
and the signal processing module is configured in the corneal contact lens, is connected with the strain induction sensor, and is used for converting the strain quantity detected by the strain induction sensor into an electric signal and sending the electric signal to an external device.
The strain sensitive sensor and the signal processing module are embedded in the contact lens by known methods, for example, the strain sensitive sensor and the signal processing module can be embedded in the contact lens by micro-electronic technology. The corneal contact lens is also used for sealing the strain induction sensor and the signal processing module, and the stable work of the corneal contact lens is ensured.
The signal processing module utilized in the present application is of known construction, comprising: an LC energy supply unit for obtaining external electric energy and a microelectronic ASIC (application on Spec integrated Circuit) integrated chip.
The microelectronic ASIC integrated chip 7 includes:
the digital-to-analog conversion unit is used for converting the received analog signals into digital signals;
a radio frequency unit for transmitting the digital signal to an external device;
a power management unit for stabilizing and distributing the voltage;
the strain sensing circuit is respectively connected with the power management unit and the analog signal receiving end of the digital-to-analog conversion unit; the digital signal sending end of the digital-to-analog conversion unit is connected with the radio frequency unit; the power management unit is respectively connected with the digital-to-analog conversion unit, the radio frequency unit and the LC energy supply unit. The signal processing module obtains the tiny electric signals collected by the strain induction sensor, and the tiny electric signals are processed and transmitted through a microelectronic integrated chip, wherein the microelectronic integrated chip mainly comprises a signal amplifying circuit, an ADC chip for converting analog signals into digital signals and a radio frequency chip for transmitting the converted digital signals. The LC energy supply unit matching circuit collects and stores energy, the structure of the LC energy supply unit matching circuit can be circular, the diameter is preferably 8-10mm, and the diameter of the inductance wire circle in the LC energy supply unit is larger than that of the measuring resistance coil. The power management unit also has the function of storing electric energy.
In some preferred embodiments, the external device is disposed on external glasses, or is a smart terminal or a computer independently disposed for displaying eyelid pressure.
In some preferred embodiments, as shown in fig. 1, the contact lens has a spherical crown shape and is configured as a double-layer structure comprising an inner layer structure 10 attached to the cornea and an outer layer structure 20 attached to the eyelid, wherein the inner layer structure 10 has a radius of curvature equal to that of the cornea, the outer layer structure 20 has a radius of curvature greater than that of the cornea, and preferably, the outer layer structure 20 has a radius of curvature r1Radius of curvature r of inner layer structure 102Has a relationship of r1＝1.3r2. By defining the radii of curvature of the inner and outer structures 10, 20, the isostatic pressure exerted by the ocular contents on the wall of the eye is reduced and the accuracy of eyelid pressure detection is improved.
As shown in fig. 2, the peripheral edges of the inner layer structure 10 and the outer layer structure 20 are pressed together to form a first cavity, wherein the first cavity corresponds to the upper eyelid and does not correspond to the lower eyelid, i.e. the inner layer structure 10 and the outer layer structure 20 corresponding to the lower eyelid are in a tight pressing form. The first cavity is internally provided with a first deformation film 30 which deforms along with pressure, the first deformation film 30 divides the first cavity into a first sealing area 41 and a second sealing area 42, the first sealing area 41 is close to the edges of the inner layer structure 10 and the outer layer structure 20, and the first sealing area 41 is internally provided with transparent liquid, preferably water.
As shown in FIG. 3, the strain sensitive sensor is a Wheatstone bridge, which is composed of four resistors R1Resistance R2Resistance R3And a resistance RXWherein the resistance R1Resistance R2Resistance R3A constant value resistor, resistor RxIs a variable varistor. With continued reference to fig. 2, the strain sensitive sensors are arranged in the following manner: resistance RxThe first deformable film 30 is attached to one side of the second sealing region 50, and has the same width as the first deformable film 30, preferably 2-10 μm; resistance R1、R2And R3Spirally arranged in the edges of the inner layer structure 10 and the outer layer structure 20. Wherein, the resistance R1Resistance R2Resistance R3And a resistance RxThe connecting structures are made of high-sensitivity high-molecular or metal materials, are preferably made of graphene materials, and have the width of preferably 2-10 micrometers. Graphene, as a flexible material, is almost transparent.
The principle of a strain sensitive sensor is as follows: when the resistance values of the four resistors are equal, the strain induction sensor is in a balanced state, when the eye blinks, the upper eyelid can drive liquid in the first sealing area to flow, and the first deformation die can be deformed due to the flow of the liquid; thereby making RxThe change in resistance reflects the amount of strain produced by the upper eyelid acting on the contact lens, i.e., a small electrical signal is produced.
With continued reference to fig. 2, the signal processing module 60 is placed in close-fitting relation.
This application is through injecing the structure of corneal contact lens to set up the mode that the wheatstone bridge that is as strain induction sensor was embedded into the corneal contact lens, can accurately measure the pressure of eyelid, intraocular pressure improves eyelid pressure detection's degree of accuracy and repeatability when reducing the detection to eyelid pressure's interference.
In some preferred embodiments, as shown in fig. 4, the contact lens is configured as a three-layer structure comprising a first layer 51, a second layer 52 and a third layer 53, wherein the first layer 51 is attached to the cornea, the second layer 52 is located between the first layer 51 and the third layer 53, the third layer 53 is attached to the eyelid, and the edges of the first layer 51, the second layer 52 and the third layer 53 are pressed together; a second cavity 54 is formed between the first layer structure 51 and the second layer structure 52, a third cavity 55 is formed between the second layer structure 52 and the third layer structure 53, the third cavity 55 corresponds to the upper eyelid and does not correspond to the lower eyelid, that is, the second layer structure 52 and the third layer structure 53 corresponding to the lower eyelid are in a tight press fit form. The first layer structure 51 and the second layer structure 52 are both deformable films deformable with pressure, as shown in fig. 5, a second deformable film 56 deformable with pressure is arranged in the third cavity 55, the third cavity 55 is divided into a third sealing area 57 and a fourth sealing area 58 by the second deformable film 56, the third sealing area 57 is close to the edges of the second layer structure 52 and the third layer structure 53, and a transparent liquid, preferably water, is arranged in the third sealing area 57.
In some preferred embodiments, the strain sensitive sensor is comprised of six resistors, respectively resistors R4Resistance R5Resistance R6Resistance RaResistance RbAnd a resistance RcWherein the resistance R4Resistance R5And a resistance R6A constant value resistor, resistor RaResistance RbAnd a resistance RcIs a variable varistor. The six resistors are preferably made of graphene material. The connection relationship of the six resistors is shown in fig. 6.
The setting mode of the strain induction sensor is as follows: resistance RaEmbedded in the first layer structure 51, length and second cavityAre the same length, resistance RbEmbedded in the second layer structure 52 and having the same length as the second cavity, and a resistance RcAttached to the second deformable membrane 56 on one side of the fourth sealing area 58; resistance R4Resistance R5Resistance R6The rounding is arranged in the edges of the first layer structure, the second layer structure and the third layer structure.
The principle of a strain sensitive sensor is as follows: when the resistance values of the six resistors are equal, the strain induction sensor is in a balanced state, when the eye blinks, the content of the eyeball can act on the first layer structure and the second layer structure, and the second cavity is arranged between the first layer structure and the second layer structure, so that the deformation amount of the first layer structure and the deformation amount of the second layer structure are different, and then the resistors R are connectedaAnd a resistance RbA change occurs; the upper eyelid can drive liquid in the third sealing area to flow, and the second deformation die can be deformed by the flow of the liquid, so that the resistor R is enabled to be arrangedcChange occurs when the resistance RaResistance RbAnd a resistance RcThe change of (a) reflects the amount of strain produced by the contents of the eyeball and the upper eyelid acting on the contact lens, i.e., a minute electrical signal can be produced.
Because the corneal contact lens is placed on the surface of the eyeball, the eyeball can also generate acting force on the corneal contact lens, and further the detection of eyelid pressure is influenced.
The external device includes:
the receiving module is used for receiving the pressure data transmitted by the signal processing module;
a calculation module that calculates the eyelid pressure Y according to the following formula,
y1- (Y2-Y3) and Y1 is a resistor RcPressure data generated after the change, Y2 is resistance RaPressure data generated after the change, Y3 is resistance RbPressure data generated after the change;
and the display module is used for displaying the calculated eyelid pressure Y.
The application carries out concrete injecing to external device, and then has improved eyelid pressure detection's accuracy.

Claims (10)

1. An eyelid pressure detection device, the detection device comprising:
the corneal contact lens is arranged on the surface of an eyeball and is attached to the cornea;
a strain sensor disposed in the contact lens for detecting a strain amount generated when the upper eyelid acts on the contact lens when blinking;
and the signal processing module is configured in the corneal contact lens, is connected with the strain induction sensor, and is used for converting the strain quantity detected by the strain induction sensor into an electric signal and sending the electric signal to an external device.
2. The eyelid pressure detection device of claim 1, wherein the corneal contact lens is configured as a bi-layer structure including an inner layer that conforms to the cornea and an outer layer that conforms to the eyelid.
3. The eyelid pressure detecting device of claim 2, wherein the inner layer and the outer layer are laminated together around their peripheral edges to form a first cavity, a first deformable membrane deformable by pressure is disposed in the first cavity, the first deformable membrane divides the first cavity into a first sealing area and a second sealing area, the first sealing area is near the edges of the inner layer and the outer layer, and a transparent liquid is disposed in the first sealing area.
4. The eyelid pressure detection device of claim 2, wherein the inner layer has a radius of curvature that is the same as a radius of curvature of the cornea, and the outer layer has a radius of curvature that is greater than the radius of curvature of the cornea.
5. The eyelid pressure detection device of claim 2, wherein the radius of curvature r of the outer layer structure1Radius of curvature r of inner layer structure2Has a relationship of r1＝(1.2-1.5)r2。
6. The eyelid pressure detecting device according to claim 3, wherein the strain sensitive sensor is a Wheatstone bridge, and the Wheatstone bridge is composed of four resistors, respectively, a resistor R1Resistance R2Resistance R3And a resistance RXSaid resistance R1Resistance R2Resistance R3Is a constant value resistor, the resistor RxIs a variable varistor; the resistor RxThe resistor R is attached to one side of the first deformation film, which is positioned in the second sealing area, and has the same width as the first deformation film1、R2And R3Spirally arranged in the edges of the inner layer structure and the outer layer structure.
7. The eyelid pressure detection device of claim 1, wherein the corneal contact lens is configured as a three-layer structure including a first layer, a second layer, and a third layer, the edges of the first, second, and third layers being stitched; a second cavity is formed between the first layer structure and the second layer structure, and a third cavity is formed between the second layer structure and the third layer structure; the first layer structure and the second structure layer are deformation films which deform along with pressure, a second deformation film which deforms along with the pressure is arranged in the third cavity, the third cavity is divided into a third sealing area and a fourth sealing area by the second deformation film, the third sealing area is close to the edges of the second layer structure and the third layer structure, and transparent liquid is arranged in the third sealing area.
8. The eyelid pressure detecting device of claim 7, wherein the strain sensitive sensor is comprised of six resistors, respectively resistor R4Resistance R5Resistance R6Resistance RaResistance RbAnd a resistance RcSaid resistance R4Resistance R5And a resistance R6A constant value resistor, resistor RaResistance RbAnd a resistance RcIs a variable varistor.
9. The eyelid pressure detection device of claim 8, wherein the resistance RaEmbedded in the first layer structure and having the same length as the second cavity, and the resistor RbEmbedded in the second layer structure and having the same length as the second cavity, and the resistor RcThe second deformation film is attached to one side of the fourth sealing area; the resistor R4Resistance R5Resistance R6The rounding is arranged in the edges of the first layer structure, the second layer structure and the third layer structure.
10. The eyelid pressure detecting device according to claim 9, wherein the external device includes:
the receiving module is used for receiving the pressure data transmitted by the signal processing module;
a calculation module for calculating eyelid pressure Y according to the following formula;
y1- (Y2-Y3) and Y1 is a resistor RcPressure data generated after the change, Y2 is resistance RaPressure data generated after the change, Y3 is resistance RbPressure data generated after the change;
and the display module is used for displaying the calculated eyelid pressure Y.
CN202010682413.8A 2020-07-15 2020-07-15 Eyelid pressure detection device Active CN111973147B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112971702A (en) * 2021-02-07 2021-06-18 北京大学第三医院（北京大学第三临床医学院） Eyelid tension measuring instrument
CN116458837A (en) * 2023-04-24 2023-07-21 首都医科大学附属北京同仁医院 Eyelid force measuring method
CN117357060A (en) * 2023-12-05 2024-01-09 北京市眼科研究所 Eyelid pressure measuring device, preparation method and eyelid pressure measuring method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05168599A (en) * 1991-12-24 1993-07-02 Tatsuo Yamaguchi Method for measuring eyelid pressure and apparatus therefor
US20040186366A1 (en) * 2001-06-29 2004-09-23 Matteo Leonardi Intraocular pressure recording system
JP2008307275A (en) * 2007-06-15 2008-12-25 Menicon Co Ltd Sensor for tension of upper and lower eyelids, cover with sheet for tension of upper and lower eyelids, and instrument for quantifying tension of upper and lower eyelids
CN103415244A (en) * 2010-10-20 2013-11-27 邓迪大学 Device for monitoring intraocular pressure
CN110200586A (en) * 2019-04-04 2019-09-06 清华大学 A kind of intraocular pressure monitoring sensor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05168599A (en) * 1991-12-24 1993-07-02 Tatsuo Yamaguchi Method for measuring eyelid pressure and apparatus therefor
US20040186366A1 (en) * 2001-06-29 2004-09-23 Matteo Leonardi Intraocular pressure recording system
JP2008307275A (en) * 2007-06-15 2008-12-25 Menicon Co Ltd Sensor for tension of upper and lower eyelids, cover with sheet for tension of upper and lower eyelids, and instrument for quantifying tension of upper and lower eyelids
CN103415244A (en) * 2010-10-20 2013-11-27 邓迪大学 Device for monitoring intraocular pressure
CN110200586A (en) * 2019-04-04 2019-09-06 清华大学 A kind of intraocular pressure monitoring sensor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112971702A (en) * 2021-02-07 2021-06-18 北京大学第三医院（北京大学第三临床医学院） Eyelid tension measuring instrument
CN116458837A (en) * 2023-04-24 2023-07-21 首都医科大学附属北京同仁医院 Eyelid force measuring method
CN116458837B (en) * 2023-04-24 2023-09-19 首都医科大学附属北京同仁医院 Eyelid force measuring method
CN117357060A (en) * 2023-12-05 2024-01-09 北京市眼科研究所 Eyelid pressure measuring device, preparation method and eyelid pressure measuring method
CN117357060B (en) * 2023-12-05 2024-03-01 北京市眼科研究所 Eyelid pressure measuring device, preparation method and eyelid pressure measuring method

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