CN220655573U - Noninvasive intracranial pressure detection device - Google Patents
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- CN220655573U CN220655573U CN202321744834.4U CN202321744834U CN220655573U CN 220655573 U CN220655573 U CN 220655573U CN 202321744834 U CN202321744834 U CN 202321744834U CN 220655573 U CN220655573 U CN 220655573U
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Abstract
The utility model discloses a noninvasive intracranial pressure detection device in the technical field of intracranial pressure measurement, which comprises a resistance ring, a pressing sensor, a positioning wire and a substrate, wherein the resistance ring is arranged on the substrate; the substrate is of a flexible sheet structure, and an adhesive layer is arranged on the bottom surface of the substrate; the resistance ring, the pressing sensor and the positioning wire are tightly attached to the top surface of the substrate, the pressing sensor is arranged in the circular ring of the resistance ring in a non-contact mode, the value can be fixed through the resistance change rate and the pressure value after pressing, an accurate intracranial pressure value is obtained, foreign matters such as the sensor are not required to be arranged in the cranium, the intracranial pressure value is not influenced on human health, the intracranial pressure value is not estimated through palpation, the numerical value measured by the device is more accurate, the reliability is higher, the intracranial pressure value is changed into an accurate numerical value measuring operation through estimation and experience judgment, and the more accurate intracranial pressure measurement can be recorded as a numerical value.
Description
Technical Field
The utility model relates to the technical field of intracranial pressure measurement, in particular to a noninvasive intracranial pressure detection device.
Background
The pressure exerted by the contents of the cranial cavity on the walls of the cranial cavity, known as intracranial pressure, is an almost closed cavity, the contents of which, brain parenchyma, cerebral blood flow and cerebrospinal fluid, are usually kept relatively constant in order to maintain the intracranial pressure in the normal range. When intracranial pressure is high, it is often indicated that there is a lesion in the cranium, such as swelling of brain tissue, intracranial space occupying lesions, or hypersecretion of cerebrospinal fluid, malabsorption, circulatory obstruction, or hypersecretion of cerebral blood flow, etc.
Increased intracranial pressure is one of the specific values exhibited by neurosurgical emergency. When the intracranial pressure is continuously higher than 2.0kPa or 15mmHg due to brain diseases, the intracranial pressure needs to be reduced, and the bone flap removing and pressure reducing operation can sufficiently reduce the intracranial pressure, so that the method is an effective means for treating the intracranial pressure and is the last choice of ineffective conservative treatment.
The bone flap decompression operation cuts off the skull of a part of patients, so that the intracranial pressure is released to a certain extent, the resected bone flap is a bone flap window, and the bone flap is completely supported and jacked by virtue of the intracranial pressure because no skull exists at the resected bone flap, so that the condition judgment of the bone flap patients often refers to the characterization condition of the bone flap window, namely the collapse or expansion of the bone flap. The monitoring of intracranial pressure has important clinical significance, for the intracranial pressure monitoring of a patient with bone flap removal, a doctor usually senses the degree of softness of the epidermis of the cranial cavity through pressing palpation of the bone flap removal window of the patient, so that the intracranial pressure level is estimated.
The conventional method is to implant a pressure sensor directly during intracranial windowing, the operation method has more complications, the operation method cannot be left for a long time, the operation method has a large dispute, the palpation has obvious subjective error, the pressing palpation cannot be recorded as the judgment basis of clinical treatment, and the other method is to carry out measurement by pressure judgment and estimation or pressing a bone flap removing window of the skull by a weight, but the measurement method is estimated, and the result difference obtained under most conditions is large.
Based on the above, the present utility model has devised a noninvasive intracranial pressure detection device to solve the above-mentioned problems.
Disclosure of Invention
The utility model aims to provide a noninvasive intracranial pressure detection device, which can be used for preparing a standard intracranial pressure comparison table in advance, correcting intracranial pressure feedback through resistance change and pressing force change, determining values through the pressed resistance change rate and pressing force value, comparing actual values of intracranial pressure in the comparison table to obtain accurate intracranial pressure values, obtaining more accurate intracranial pressure values through multiple measurement data, and estimating the intracranial pressure values without arranging foreign matters such as a sensor in the cranium or by palpation, so that the device can be used for measuring the values more accurately and has higher reliability, measuring the intracranial pressure values has no influence on human health, changing the intracranial pressure values into accurate values through estimation and experience judgment, recording the more accurate intracranial pressure measurement as the values, and recording the change of the intracranial pressure through the values.
The utility model is realized in the following way: a non-invasive intracranial pressure detection device, comprising:
the device comprises a resistor ring, a pressing sensor, a positioning line and a substrate;
the substrate is of a flexible sheet structure, and an adhesive layer is arranged on the bottom surface of the substrate;
the resistance ring, the pressing sensor and the positioning wire are tightly attached to the top surface of the substrate;
the resistor ring is a circular sheet resistor, and the ring surface of the resistor ring is broken into annular line segments which are not connected end to end;
the positioning wires are electric connection wires, the head end and the tail end of the resistance ring are respectively connected with one positioning wire, and the two positioning wires are not contacted with each other;
the pressing sensor is of a circular sheet structure, the pressing sensor is arranged in the circular ring of the resistance ring in a non-contact mode, and the circle center of the pressing sensor is coincident with the circle center of the resistance ring.
Further, a measuring end is arranged at the end-to-end disconnection position of the resistor ring, the measuring ends at the end-to-end are not contacted, each positioning wire is respectively in butt joint with one measuring end, one positioning patch is attached to the butt joint position of the measuring end and the positioning wire, the two positioning patches attached to the positioning wires at the end-to-end are not contacted with each other, and the positioning patches are copper foil adhesive tapes; the positioning patch is covered and tightly attached to the tops of the positioning line and the measuring end, and the positioning patch is tightly adhered to the substrate;
the outer ends of the two positioning lines can be connected with the detection end of the resistance measuring device in a separated way;
the resistance measuring device is an ohmmeter or a resistance tester.
Further, the resistance ring is printing ink formed by mixing multi-wall carbon nanotubes and graphene, and the resistance ring and the substrate are printed into an integral sheet structure;
the arc angle a of the resistance ring disconnection does not exceed 30 degrees.
Further, the pressing sensor is a flexible pressure sensor;
the head end and the tail end of the pressing sensor are respectively connected with a wiring terminal, and the wiring terminal is connected with the measuring instrument in a separable way;
the bottom surface of the pressing sensor is also covered with an insulating film, and the pressing sensor is insulated from the resistance ring and the positioning wire.
Further, the substrate is an elastic medical adhesive tape, and the adhesive layer of the substrate is a pressure-sensitive adhesive;
the substrate is square or round with side length of 5-15 cm.
The beneficial effects of the utility model are as follows: 1. the device is attached to the outside for detection, a sensor is not required to be implanted in the cranium, the body health is not affected, the detection is required at any time, the device is attached to the epidermis of the bone flap removing window at any time, and if the skin state allows, the device can be attached for a long time and can be pressed for measurement at any time;
2. the device records the intracranial pressure measurement value through the actual measurement and the establishment of the standard value, is more accurate, does not depend on the experience judgment of doctors, is not an estimated value any more, is accurate pressure value feedback, and is a result obtained through multiple accurate experiments, and the accuracy is far more accurate than that of estimation and palpation;
3. the pressure value is an intracranial external pressure value, not intracranial pressure, the intracranial pressure and blood vessels can contract and relax according to the change of blood pressure, and the direct measurement and the re-estimation are very error.
Drawings
The utility model will be further described with reference to examples of embodiments with reference to the accompanying drawings.
FIG. 1 is a schematic top view of the top surface of the overall structure of the present utility model;
FIG. 2 is a schematic top view of the resistor ring structure of the present utility model;
FIG. 3 is a schematic diagram of the wiring of the resistance ring and the resistance measuring device of the present utility model;
FIG. 4 is a schematic diagram of a pressing sensor according to the present utility model;
FIG. 5 is a schematic diagram of a standard intracranial pressure value curve comparison table structure in accordance with the present utility model.
In the drawings, the list of components represented by the various numbers is as follows:
1-resistance ring, 11-measuring terminal, 2-pressing sensor, 21-terminal, 22-measuring instrument, 3-positioning wire, 31-positioning patch, 32-resistance measuring device, 4-substrate.
Detailed Description
Referring to fig. 1 to 5, the present utility model provides a technical solution: a non-invasive intracranial pressure detection device, comprising:
a resistance ring 1, a pressing sensor 2, a positioning wire 3, and a substrate 4;
the substrate 4 is of a flexible sheet structure, and an adhesive layer is arranged on the bottom surface of the substrate 4;
the resistance ring 1, the pressing sensor 2 and the positioning wire 3 are tightly attached to the top surface of the substrate 4;
the resistor ring 1 is a circular sheet resistor, and the annular surface of the resistor ring 1 is broken into annular line segments which are not connected end to end;
the positioning wires 3 are electric connection wires, the head end and the tail end of the resistor ring 1 are respectively connected with one positioning wire 3, and the two positioning wires 3 are not contacted with each other;
the pressing sensor 2 is of a circular sheet structure, the pressing sensor 2 is not in contact with the other foreign matters such as the resistor ring 1, the center of the pressing sensor 2 coincides with the center of the resistor ring 1, a standard intracranial pressure comparison table can be manufactured in advance, feedback of intracranial pressure is corrected through change of the resistor F and change of the pressing force F, a value is fixed through the resistance change rate and the pressure value after pressing, an actual value of the intracranial pressure is compared in the comparison table, an accurate intracranial pressure value is obtained, multiple times of measured data are more accurate, the intracranial pressure value is measured more accurately, foreign matters such as the sensor are not required to be arranged in the cranium, the intracranial pressure value is measured and is not influenced on human health, the intracranial pressure value is estimated through palpation, in clinical practice, pressing equipment can be directly used for pressing a bone flap removing window of the cranium through fixed pressure value, the pressing value is stable, the measured value is more accurate than the pressing by hands, the device is enabled to have higher reliability, the measured value is more accurately, and the measured value is more accurately recorded in order to be a practical measurement mode.
Wherein, a measuring end 11 is respectively arranged at the head-tail disconnection position of the resistor ring 1, the measuring ends 11 at the head-tail ends are not contacted, each positioning wire 3 is respectively in butt joint with one measuring end 11, a positioning patch 31 is attached at the butt joint position of the measuring end 11 and the positioning wire 3, the two positioning patches 31 attached on the positioning wire 3 at the head-tail ends are not contacted with each other, and the positioning patches 31 are copper foil adhesive tapes; the positioning patch 31 is closely covered on the top of the positioning wire 3 and the measuring end 11, and the positioning patch 31 is tightly adhered with the substrate 4;
the outer ends of the two positioning wires 3 can be connected with the detection end of the resistance measuring device 32 in a separated way;
the resistance measuring device 32 is an ohmmeter or a resistance tester, wiring is accurate and stable, the resistance ring 1 is pulled out through the measuring end 11, mutual influence of the attaching positioning wire 3 and the positioning patch 31 is avoided, measuring accuracy is ensured, and influence is small in manufacturing;
the resistance ring 1 is printing ink formed by mixing multiwall carbon nanotubes and graphene, and the resistance ring 1 and the substrate 4 are printed into an integral sheet structure;
the arc angle a of the disconnection of the resistance ring 1 is not more than 30 degrees, and an approximately closed circular ring is formed, so that the shape change of the pressed resistance ring is more uniform, but the resistance ring needs to be disconnected end to form a complete resistance structure, the resistance change generated by the uniform change of the deformation is conveniently measured, the structure is more stable, and the resistance value is also measured more accurately;
the pressing sensor 2 is a flexible pressure sensor;
a wiring terminal 21 is respectively connected to the head end and the tail end of the pressing sensor 2, and the wiring terminal 21 is detachably connected with a measuring instrument 22;
the bottom surface of the pressing sensor 2 is also covered with an insulating film, the pressing sensor 2 is insulated from the resistor ring 1 and the positioning wire 3, mutual interference is avoided, and the accuracy of resistance and pressure measurement is ensured;
the substrate 4 is an elastic medical adhesive tape, the adhesive layer of the substrate 4 is pressure sensitive adhesive, so that the adhesive tape is convenient to be tightly adhered on a epidermis and can be conveniently peeled off and detached, and the elastic medical adhesive tape can be deformed and fed back into a resistance value R and a pressure value F along with pressing;
the substrate 4 is square or round with the side length of 5-15cm, the center point of the substrate 4 coincides with the center of the pressing sensor 2, and the substrate 4 is aligned on the cranium epidermis accurately.
In one embodiment of the utility model:
the technical problems encountered by the embodiment of the utility model are as follows: 1. in the existing intracranial pressure measurement mode, in order to simply and quickly know the condition of a patient, palpation is generally carried out, a doctor directly presses the skull windowed bone flap window epidermis of the patient, and the intracranial feedback pressure is tested by pressing, so that the method needs a doctor to have very abundant experience, and even the doctor with abundant experience can only roughly judge each palpation, and cannot obtain accurate numerical values and cannot carry out data comparison and recording; 2. whether the intracranial pressure sensor is necessarily implanted for the patient with the bone flap removed is controversial, so that the method for the implantation of the intracranial pressure sensor is not widely popularized, and the reasons include difficult implantation of the implanted sensor, possibility of causing a plurality of complications and incapacitation of long-time retention, especially for the patient after the bone flap removing decompression operation, the normal threshold value of the intracranial pressure is always changed, but no reference standard exists at home and abroad, and the influence of the implanted intracranial pressure sensor on the prognosis of the patient cannot be judged; 3. also, by measuring the pressure outside the cranium, various methods are estimated, and this method can only measure the relation between the intracranial pressure and the extracranial pressure, thereby estimating the rising amplitude of the intracranial pressure, but cannot obtain an accurate intracranial pressure value, and is difficult to be used for guiding clinical decisions.
The technical problems solved by the utility model are as follows: by means of a simple device, intracranial pressure and intracranial pressure feedback are related to the characterization outside the cranium, and the intracranial pressure form a corresponding relation, so that intracranial pressure values can be accurately measured and calculated outside the cranium, intracranial pressure is changed from palpation and estimation to accurate measurement, a pressure sensor is not required to be implanted in the cranium, and noninvasive intracranial pressure monitoring is realized.
The technical effects are realized as follows: 1. the device is attached to the outside for detection, a pressure sensor is not required to be implanted in the cranium, the body health is not affected, the detection is required at any time, the substrate 4 of the device is attached to the epidermis of the bone flap removing window at any time, and if the skin state allows, the device can be attached for a long time and can be pressed at any time for measurement;
2. when the device is used on a sickbed, a fixed pressure value F can be generated through hand pressing, the intracranial pressure measurement is recorded through actual measurement and establishment of a standard value, the intracranial pressure measurement is more accurate, the judgment is not dependent on the experience of doctors, the estimated value is not needed, the accurate pressure value is fed back, the standard value measurement is also a result obtained through multiple accurate experiments, the accuracy is far more accurate than the estimation and palpation, and the device can also directly use pressing equipment to press the bone flap removing window of the skull with the fixed pressure value in clinical practice, so that the pressing value is stable and more accurate than the hand pressing;
3. the pressure value is an intracranial external pressure value, not intracranial pressure, is measured at present, is commonly used, and is estimated, and the intracranial pressure are basically incoherent parameters, so that the existing estimation accuracy is very low, and the intracranial pressure and blood vessels can also contract and relax according to the change of the blood pressure;
4. according to the utility model, the resistance value can be measured through the flexible resistance ring 1, and the resistance ring 1 can change in shape along with the change of the bone flap window epidermis at the attachment position of the bottom liner 4 after being pressed, so that the resistance of the resistance ring 1 changes due to the shape change, the resistance change and the shape change become matched, the shape change quantity is reflected to be a standard value through the resistance change rate, so that the measurement is performed, the whole pressing force can also be measured through the pressing sensor 2, the representation of the whole intracranial pressure feedback is changed to be a numerical value capable of accurately measuring, and the state of the intracranial pressure can be expressed and recorded in a numerical mode more accurately.
The technical scheme in the embodiment of the utility model aims to solve the problems, and the overall thought is as follows:
in order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.
A standard intracranial pressure value curve comparison table is prepared by taking a pressure sensor for directly measuring intracranial pressure, measuring the intracranial pressure simulated by a closed stainless steel ball body, opening an opening on the surface of the ball body, simulating a bone flap window, sealing the window by a ductile material, simulating the resistance and toughness of a human body, enabling the pressure value in the ball body to be constant to be 0.5kPa, 1kPa, 1.5kPa, 2kPa, 3kPa and other groups of different values, and measuring the pressure in the ball body in a constant state of each different value.
For example, the pressure in the sphere is constant at 1kPa, the substrate 4 of the device is attached to the surface of the bone flap removing window of the sphere, and the resistance of the non-pressed resistance ring 1 in the natural state is measured and recorded as R 0 Then, a precise pressing device, which may be an electric pressing rod or a hydraulic rod, is pressed to a fixed depth under a constant pressure, is kept still, then the measured pressure value F of the pressing sensor 2 is recorded by the measuring instrument 22, the resistance of the resistance ring 1 is measured by the resistance measuring device 32 and recorded as R, the same pressure value F is measured for a plurality of times, the resistance is measured under different pressure values F, the more measured data are, the more precise the finally obtained curve is, and a plurality of times of comparison are neededThe value is then calculated by the formula DeltaR/R 0 ＝(R-R 0 )/R 0 The method comprises the steps of (1) obtaining a precise curve of a resistance change rate and a pressure value F in a rectangular coordinate system, wherein the resistance change rate is 1kPa in a sphere, the pressure value F can be 1N, 2N, 3N and the like, the resistance value of a resistance ring 1 is measured under the condition of different pressure values F, the resistance value R is measured for a plurality of times until the resistance value R is a fixed value, then removing impurities and averaging to obtain an accurate resistance value R, and finally performing verification for a plurality of times to ensure that the curve precision of the sphere pressure of 1kPa in the coordinate system is accurate.
The measurement operation is performed in the same way when the ball is constant at different pressure values, such as 2kPa, until the resistance value R of the resistance ring 1 can be accurately displayed as a curve in the case of a plurality of different pressure values F, and the measurement and recording are performed in the case of a plurality of different ball internal pressure values, so as to form a comparison table containing a plurality of different standard intracranial pressure value curves, and if higher accuracy is required, the comparison table can be measured and calibrated by a patient in which an intracranial pressure sensor is implanted during the bone flap removing operation, and the comparison table preparation scheme is similar to the principle of the intraocular pressure measurement comparison table, but the parameters and schemes are used, because the constant characterization parameters fed back by the scheme are different in types, and the constant parameters fed back by the scheme are the relationship between the resistance change rate and the pressing force F, so that the modes of testing and preparing the comparison table are different.
When the comparison table is an accurate fixed value of intracranial pressure, a constant accurate value is obtained by comparing and recording the change of pressing force and the change of epidermal resistance caused by feedback change after intracranial pressure, a plurality of different pressing forces obtain accurate resistance change rate values and pressing values, a stable curve is formed in a rectangular coordinate system, then under the condition of different intracranial pressure values, the comparison is continuously measured, a plurality of data sets obtain different pressing feedback forces and changes, the obtained resistance change rate and pressing force value F are a constant change curve, and the actual measured value R of the resistance and the numerical value of the pressing force F are larger errors. Therefore, the reference table of the standard intracranial pressure value curve is a standard reference table with accurate numerical value, and forms a stable and accurate corresponding relation with the measured resistance change rate and the pressing force value F, so that the measurement of the intracranial pressure forms an accurate numerical value.
The method is to measure the feedback change after the intracranial compression on the change of the pressing force of the bone flap removing window to obtain the change relation between the resistance change rate and the pressing force, wherein the change relation is kept constant with the intracranial pressure value, and a more accurate intracranial pressure value is obtained in a standard intracranial pressure value comparison table appointed for reference, and the value is not an estimated value but an accurate measured value, so long as the resistance value and the pressure value are accurate enough, the finally measured intracranial pressure value is an accurate value.
In the utility model, when the equipment is manufactured, a resistor ring 1, a pressing sensor 2, a positioning wire 3 and a substrate 4 are required to be manufactured;
the substrate 4 is of a flexible sheet structure, the bottom surface of the substrate 4 is provided with an adhesive layer, the substrate 4 is an elastic medical adhesive tape, and the adhesive layer of the substrate 4 is a pressure-sensitive adhesive; the substrate 4 is square with sides between 5-15 cm.
The resistance ring 1, the pressing sensor 2 and the positioning wire 3 are closely attached to the top surface of the substrate 4;
the resistor ring 1 is a circular sheet resistor, and the annular surface of the resistor ring 1 is broken into annular line segments which are not connected end to end; the resistor ring 1 is printing ink formed by mixing the multiwall carbon nanotubes and the graphene, and the resistor ring 1 and the substrate 4 are printed into an integral sheet structure, so that the resistor ring 1 and the substrate 4 synchronously shrink or elastically stretch, and the resistor ring 1 and the substrate 4 are printed into an integral sheet structure; the arc angle a of the disconnection of the resistance ring 1 is not more than 30 degrees, preferably 10 degrees, as long as
The positioning wires 3 are electric connection wires, the head end and the tail end of the resistance ring 1 are respectively connected with one positioning wire 3, and the two positioning wires 3 are not contacted with each other; the measuring ends 11 are respectively arranged at the head-tail disconnection positions of the resistor ring 1, the measuring ends 11 at the head-tail two ends are not contacted, each positioning wire 3 is respectively butted with one measuring end 11, one positioning patch 31 is attached to the butted position of the measuring end 11 and the positioning wire 3, the two positioning patches 31 attached to the positioning wire 3 at the head-tail two ends are not contacted with each other, and the positioning patches 31 are copper foil adhesive tapes; the positioning patch 31 is closely covered on the top of the positioning wire 3 and the measuring end 11, and the positioning patch 31 is tightly adhered with the substrate 4;
if the conductive positioning patch 31 is not used, two mutually-attached surfaces are attached to each other, namely, when the contact point between the bottom of the positioning wire 3 and the measuring end 11 is not deformed, when deformation and distortion occur, the harder wire serving as the positioning wire 3 is easy to lift off from the measuring end 11 when the skin is deformed, and at the moment, the positioning wire 3 can be in contact with the measuring end 11, so that the connection of the wire is necessarily wound, soldered and connected, while the positioning patch 31 of the device, which is made of the copper foil tape, still has the effect of being in contact with the measuring end 11 through the positioning patch 31 to realize circuit connection when the positioning wire 3 is lifted.
The outer ends of the two positioning wires 3 can be connected with the detection end of the resistance measuring device 32 in a separated way; the resistance measuring device 32 is an ohmmeter or a resistance tester, as long as the exact resistance of the resistance ring 1 can be measured.
The pressing sensor 2 is of a circular sheet structure, the pressing sensor 2 is arranged in the circular ring of the resistor ring 1 in a non-contact manner, the circle center of the pressing sensor 2 is coincident with the circle center of the resistor ring 1, the pressing sensor 2 is a flexible pressure sensor, and the pressing sensor is a common device for measuring pressing force and can be purchased from outsiders; the head end and the tail end of the pressing sensor 2 are respectively connected with a wiring terminal 21, and the wiring terminal 21 is detachably connected with a measuring instrument 22; the bottom surface of the pressing sensor 2 is also covered with an insulating film, the pressing sensor 2 is insulated from the resistor ring 1 and the positioning wire 3, and mutual interference between the resistor and the pressing force value F is effectively avoided.
The noninvasive intracranial pressure detection method of the noninvasive intracranial pressure detection device comprises the following steps:
step 1, a reference table of a standard intracranial pressure value curve is prepared in a coordinate system in advance, and the reference table is shown in fig. 5;
step 2, taking a substrate 4 provided with a resistance ring 1 and a pressing sensor 2, attaching an adhesive layer of the substrate 4 to the cranium of a patient, exposing the resistance ring 1 and the pressing sensor 2 outwards, and aligning and attaching a corresponding point of the circle centers of the pressing sensor 2 and the resistance ring 1 on the bottom surface of the substrate 4 with a center point of the pressure measuring part of the cranium outer wall;
step 3, connecting the pressing sensor 2 with an external measuring instrument 22, and connecting the resistance ring 1 with a resistance measuring device 32 to ensure stable connection;
step 4, measuring the resistance of the resistance ring 1 in the initial state, and recording the initial resistance value as R 0 ；
Step 5, pressing the center point of the resistor ring 1, measuring the resistance value of the pressed state as R, and measuring the pressing force value received by the pressing sensor 2 as F;
step 6, passing through the formula DeltaR/R 0 ＝(R-R 0 )/R 0 And calculating the resistance change rate, and comparing the coordinate point where the resistance change rate and the pressure value F are intersected in the coordinate system with a standard intracranial pressure value curve in a comparison table, wherein the curve closest to the intersected coordinate point is the current pressure value of the intracranial pressure.
The resistance value R of the pressing state of the resistance ring 1 is a value measured by keeping the pressing state of the fingers of a doctor, the retention time is needed to record the pressure value F and the resistance value R at the same time, the R value is generally measured firstly, then the F value is immediately read, namely the effective data is measured, when a patient cannot get down, the doctor can press the finger by hand to measure through the pressure measuring device, if the patient is allowed to get down under the physical condition, the pressing device can be used for pressing to generate the pressure value F in clinic, the bone flap removing window of the skull is pressed by the fixed pressure value F, and the pressing value is stable and more accurate than the hand pressing.
Meanwhile, the multi-time measurement is needed to be carried out on the resistance pressing ring 1, coordinate points where the resistance change rate and the pressure value F meet are marked in a coordinate system of a comparison table for multiple times, and the lamination curve of the coordinate points measured for multiple times is calibrated in the comparison table;
the number of measurements performed repeatedly by pressing the resistance ring 1 is not less than three.
After the measurement is completed, the substrate 4 can be torn off, and the device is separated from the cranium skin of the patient.
Therefore, accurate intracranial pressure can be measured, other sensors are not implanted in the cranium, noninvasive intracranial pressure measurement is realized, the numerical value is accurate, estimation is not carried out, palpation is not carried out, accurate measurement and recording are carried out, accurate intracranial pressure numerical values can be obtained, the intracranial pressure of a patient or a recovered crowd can be measured conveniently, the intracranial pressure condition of a person can be judged according to the accurate measurement, and can be compared with the change of the physical state through the change of the intracranial pressure, more medical attempts are carried out, rather than the situation that the intracranial pressure is only approximately judged in the past, the condition of high, medium and low in the cranium can not be used as a theoretical basis at all, the person implanted with the intracranial pressure sensor is too few to form enough data quantity as theoretical support, and the device enables the research on the change of the intracranial parameters to provide new possibility and data support.
While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that the specific embodiments described are illustrative only and not intended to limit the scope of the utility model, and that equivalent modifications and variations of the utility model in light of the spirit of the utility model will be covered by the claims of the present utility model.
Claims (5)
1. A non-invasive intracranial pressure detection device, comprising: a resistance ring (1), a pressing sensor (2), a positioning wire (3) and a substrate (4);
the substrate (4) is of a flexible sheet structure, and an adhesive layer is arranged on the bottom surface of the substrate (4);
the resistor ring (1), the pressing sensor (2) and the positioning wire (3) are tightly attached to the top surface of the substrate (4);
the resistor ring (1) is a circular sheet resistor, and the annular surface of the resistor ring (1) is broken into annular line segments which are not connected end to end;
the positioning wires (3) are electric connection wires, the two ends of the resistor ring (1) at the head and the tail are respectively connected with one positioning wire (3), and the two positioning wires (3) are not contacted with each other;
the pressing sensor (2) is of a circular sheet structure, the pressing sensor (2) is arranged in the circular ring of the resistor ring (1) in a non-contact mode, and the circle center of the pressing sensor (2) is coincident with the circle center of the resistor ring (1).
2. A non-invasive intracranial pressure detection device as recited in claim 1, wherein: a measuring end (11) is arranged at each of the head-tail disconnection positions of the resistor ring (1), the measuring ends (11) at the head-tail ends are not contacted, each positioning wire (3) is respectively in butt joint with one measuring end (11), a positioning patch (31) is attached to the butt joint position of the measuring end (11) and the positioning wire (3), two positioning patches (31) attached to the positioning wire (3) at the head-tail ends are not contacted with each other, and the positioning patches (31) are copper foil adhesive tapes; the positioning patch (31) is tightly covered and stuck on the tops of the positioning wire (3) and the measuring end (11), and the positioning patch (31) is tightly adhered with the substrate (4);
the outer ends of the two positioning wires (3) can be connected with the detection end of the resistance measuring device (32) in a separated way;
the resistance measuring device (32) is an ohmmeter or a resistance tester.
3. A non-invasive intracranial pressure detection device as recited in claim 1, wherein: the resistor ring (1) is printing ink formed by mixing multiwall carbon nanotubes and graphene, and the resistor ring (1) and the substrate (4) are printed into an integral sheet structure;
the arc angle a of the disconnection of the resistance ring (1) is not more than 30 degrees.
4. A non-invasive intracranial pressure detection device as recited in claim 1, wherein: the pressing sensor (2) is a flexible pressure sensor;
the head end and the tail end of the pressing sensor (2) are respectively connected with a wiring terminal (21), and the wiring terminal (21) is detachably connected with the measuring instrument (22);
the bottom surface of the pressing sensor (2) is also covered with an insulating film, and the pressing sensor (2) is insulated from the resistor ring (1) and the positioning wire (3).
5. A non-invasive intracranial pressure detection device as recited in claim 1, wherein: the substrate (4) is an elastic medical adhesive tape, and the adhesive layer of the substrate (4) is a pressure-sensitive adhesive;
the substrate (4) is square or round with a side length of 5-15 cm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202321744834.4U CN220655573U (en) | 2023-07-05 | 2023-07-05 | Noninvasive intracranial pressure detection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202321744834.4U CN220655573U (en) | 2023-07-05 | 2023-07-05 | Noninvasive intracranial pressure detection device |
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