CN111990986B - Intracranial pressure monitoring method and device - Google Patents
Intracranial pressure monitoring method and device Download PDFInfo
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- CN111990986B CN111990986B CN202010972177.3A CN202010972177A CN111990986B CN 111990986 B CN111990986 B CN 111990986B CN 202010972177 A CN202010972177 A CN 202010972177A CN 111990986 B CN111990986 B CN 111990986B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/03—Detecting, measuring or recording fluid pressure within the body other than blood pressure, e.g. cerebral pressure; Measuring pressure in body tissues or organs
- A61B5/031—Intracranial pressure
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/03—Detecting, measuring or recording fluid pressure within the body other than blood pressure, e.g. cerebral pressure; Measuring pressure in body tissues or organs
- A61B5/036—Detecting, measuring or recording fluid pressure within the body other than blood pressure, e.g. cerebral pressure; Measuring pressure in body tissues or organs by means introduced into body tracts
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/48—Other medical applications
- A61B5/4836—Diagnosis combined with treatment in closed-loop systems or methods
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
- A61B5/6867—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive specially adapted to be attached or implanted in a specific body part
- A61B5/6868—Brain
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/74—Details of notification to user or communication with user or patient ; user input means
- A61B5/746—Alarms related to a physiological condition, e.g. details of setting alarm thresholds or avoiding false alarms
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/02—Details of sensors specially adapted for in-vivo measurements
- A61B2562/0247—Pressure sensors
Abstract
The invention discloses a method and a device for monitoring intracranial pressure. The monitoring method comprises the following steps: connecting the pressure sensor with the pressure measuring probe, and forming a pressure transmission path from the film to the pressure sensor; implanting the pressure measuring probe into the ventricle of the patient, and conducting intracranial pressure to the film of the pressure measuring probe by using cerebrospinal fluid in the ventricle; converting the cerebrospinal fluid pressure change into a grating signal by a pressure sensor; transmitting the grating signal to a photoelectric analysis module through an optical fiber, so that the photoelectric analysis module converts the grating signal into an electric signal; the electrical signal is digital-to-analog converted into a pressure waveform representing intracranial pressure and displayed. The invention can conduct operations such as drainage and the like while monitoring, and because the size of the pressure measuring probe is smaller, and the optical fiber sensor and the corresponding optical fiber are thinner, the drilling insertion of the pressure measuring probe can be realized, the detection is carried out by utilizing the principle of medium conduction, the principle of a communicating vessel is not needed, the operation is simple, and the cerebrospinal fluid drainage can be synchronously implemented.
Description
Technical Field
The invention relates to a monitoring method in the technical field of clinical monitoring, in particular to an intracranial pressure monitoring method and an intracranial pressure monitoring device.
Background
Intracranial pressure (icp) refers to the pressure of the cranial contents (brain tissue, cerebrospinal fluid, blood) against the wall of the cranial cavity. Increased intracranial pressure means that the intracranial pressure persists over 15mmHg (20 cmH2O or 2.00 kPa). Various severe neurological diseases, such as craniocerebral trauma, cerebrovascular disease, encephalitis, meningitis, venous sinus thrombosis, brain tumor, etc., are accompanied by various degrees of intracranial pressure increase. Increased intracranial pressure can cause the patient to become conscious disturbance, severe cases to become cerebral hernias, and can be life threatening in a short period of time. The intracranial pressure monitoring has important clinical significance in judging the illness state and guiding the treatment of lowering the intracranial pressure. Depending on the location of the sensor placement, intracranial pressure monitoring can be categorized into intra-cerebral, intra-brain parenchyma, sub-dural and extra-dural pressure measurement. The method comprises the following steps of: an intra-ventricular catheter > an intra-brain parenchyma fiber optic sensor > a subdural sensor > an extra-dural sensor. At present, intracranial pressure measurement is carried out by draining cerebrospinal fluid in a brain chamber and leveling by using the principle of a communicating vessel.
Disclosure of Invention
The invention provides an intracranial pressure monitoring method and device, which aim to solve the technical problems that the existing intracranial pressure measuring method is complex to operate and inconvenient to synchronously perform cerebrospinal fluid drainage.
The invention is realized by adopting the following technical scheme: an intracranial pressure monitoring method, which monitors intracranial pressure by an intracranial pressure detecting device; the intracranial pressure detection equipment comprises a pressure measuring probe; the pressure measuring probe is provided with a plurality of detection holes which are contacted with intracranial cerebrospinal fluid; the surface of the pressure measuring probe is covered with a film, and the film covers the detection hole; the front end of the pressure measuring probe is provided with a cavity communicated with the detection hole, and the cavity is filled with a conductive medium; the rear end of the pressure measuring probe is communicated with the front end, and a pressure sensor is arranged in the pressure measuring probe; the pressure sensor is used for detecting the pressure of the thin film by sensing the pressure of the conducting medium, and the intracranial pressure detection device converts the pressure into the intracranial pressure; wherein, the intracranial pressure monitoring method comprises the following steps:
(1) Connecting the pressure sensor with the pressure measurement probe and forming a pressure transmission path from the membrane to the pressure sensor;
(2) Implanting the pressure measurement probe into a ventricle of a patient, and conducting intracranial pressure to a membrane of the pressure measurement probe by using cerebrospinal fluid in the ventricle;
(3) Converting cerebrospinal fluid pressure into a grating signal by the pressure sensor;
(4) Transmitting the grating signal to a photoelectric analysis module through an optical fiber, so that the photoelectric analysis module converts the grating signal into an electric signal;
(5) The electrical signal is converted into a pressure waveform representative of the intracranial pressure and displayed.
According to the invention, the pressure measuring probe is arranged in cerebrospinal fluid in a ventricle, the film on the pressure measuring probe deforms under the pressure action of the cerebrospinal fluid, so that the pressure is exerted on a conducting medium in a cavity, the conducting medium transmits the pressure and exerts the pressure on the pressure sensor, thus the pressure sensor generates signals positively related to intracranial pressure and then converts the signals into grating signals, the grating signals are converted into electric signals after being analyzed by the photoelectric analysis module, and finally the electric signals are converted into pressure waveforms of the intracranial pressure and displayed, thus the technical problems that the operation of the traditional intracranial pressure measuring method is complex and inconvenient to synchronously implement cerebrospinal fluid drainage are solved, and the technical effects of simplicity in operation and synchronous implementation of cerebrospinal fluid drainage are obtained.
As a further improvement of the above scheme, a plurality of detection holes are arranged around the central axis of the pressure measuring probe and are arranged on the side wall of the pressure measuring probe; each detection hole is elliptical, and the long axis direction is parallel to the central axis of the pressure measuring probe.
As a further improvement of the above, the radius of the front end is greater than the radius of the rear end, and the detection Kong Kaishe is on the front end.
As a further improvement of the above solution, the front end is hemispherical at an end far away from the rear end, and the front end is detachably connected with the rear end.
As a further improvement of the scheme, the pressure measuring probe is a high molecular compound probe, and the film is a high molecular film.
As a further improvement of the above, the intracranial pressure detection device further comprises a sensor interface; the sensor interface is mounted on the rear end and is connected with the pressure sensor.
As a further improvement of the above, the intracranial pressure detection apparatus further comprises a host; the host is connected with the pressure sensor through the optical fiber and is used for displaying the intracranial pressure and the pressure waveform.
As a further improvement of the above scheme, the optical fiber sensor generates the grating signal through an optical coupler, and the grating signal is input into a micro-control unit for processing through grating analysis, photoelectric conversion and analog-to-digital conversion to form the pressure waveform.
As a further improvement of the above, the intracranial pressure monitoring method further comprises:
judging whether the intracranial pressure exceeds a pressure threshold;
and when the intracranial pressure exceeds the pressure threshold, sending out a pressure overload alarm signal and releasing the intracranial fluid through a drainage tube, and continuously measuring the intracranial pressure.
The invention also provides an intracranial pressure monitoring device which is applied to the intracranial pressure monitoring method, and comprises the following steps:
an intracranial pressure detection device comprising a pressure measurement probe and a pressure sensor; the pressure measuring probe is provided with a plurality of detection holes which are contacted with intracranial cerebrospinal fluid; the surface of the pressure measuring probe is covered with a film, and the film covers the detection hole; the front end of the pressure measuring probe is provided with a cavity communicated with the detection hole, and the cavity is filled with a conductive medium; the rear end of the pressure measuring probe is communicated with the front end, and the pressure sensor is arranged in the pressure measuring probe; the pressure sensor is used for detecting the pressure of the thin film by sensing the pressure of the conducting medium, and the intracranial pressure detection device converts the pressure into the intracranial pressure;
and the intracranial pressure monitoring mechanism is used for connecting the pressure sensor with the pressure measuring probe, forming a pressure transmission path from the film to the pressure sensor, implanting the pressure measuring probe into a ventricle of a patient, conducting intracranial pressure to the film of the pressure measuring probe by using cerebrospinal fluid in the ventricle, converting pressure change of the cerebrospinal fluid into a grating signal by the pressure sensor, and finally converting the electric signal into a pressure waveform representing the intracranial pressure and displaying the pressure waveform.
Compared with the existing intracranial pressure measuring method, the intracranial pressure monitoring method and device have the following beneficial effects:
1. according to the intracranial pressure monitoring method, a pressure measuring probe is arranged in cerebrospinal fluid in a ventricle, a film on the pressure measuring probe deforms under the pressure action of the cerebrospinal fluid, the pressure is further exerted on a conducting medium in a cavity, the conducting medium transmits the pressure and is exerted on a pressure sensor, so that the pressure sensor generates signals positively related to intracranial pressure and then converts the signals into grating signals, the grating signals are converted into electric signals after being analyzed by a photoelectric analysis module, and finally the electric signals are converted into pressure waveforms of the intracranial pressure and displayed, and therefore the cerebral pressure and the pressure change can be intuitively monitored. Because in the in-process of monitoring, the pressure measurement probe is independent of other equipment, just so can carry out operations such as drainage in the monitoring, because the size of pressure measurement probe is less moreover, optical fiber sensor and corresponding optic fibre are all thinner simultaneously, can realize the drilling of pressure measurement probe and insert to utilize the principle of air conduction to detect, need not to utilize the principle of communicating vessel, easy operation can synchronous implementation cerebrospinal fluid drainage.
2. The intracranial pressure monitoring method can also judge whether the intracranial pressure exceeds a pressure threshold value, if so, an alarm signal is sent out and the intracranial pressure is released from cerebrospinal fluid through the drainage tube, so that the intracranial pressure is prevented from being too large, and drainage operation can be performed while the intracranial pressure is detected, thereby ensuring continuous and effective intracranial pressure monitoring.
3. The intracranial pressure monitoring method senses the pressure of cerebrospinal fluid by utilizing the detection function of the film, and the film can be a high polymer film which is pressure-resistant and sensitive in response, so that the pressure change of the cerebrospinal fluid can be more accurately detected, and the detection accuracy and precision of the intracranial pressure are improved.
4. According to the intracranial pressure monitoring method, the used pressure measuring probe is provided with the front end and the rear end, the front end and the rear end are detachably connected, so that after the pressure measuring probe is used once, the front end can be used as a disposable consumable, the rear end and the internal sensor continue to be used, on one hand, the fact that the thin film for detecting the intracranial pressure each time is unused is ensured, the detection is more accurate, and on the other hand, the part with higher value in the pressure measuring probe is still used, and therefore the utilization rate of devices is improved, and the monitoring cost is reduced.
5. The intracranial pressure monitoring method is different from the existing intracranial pressure monitoring method, can be carried out in cooperation with an operation, can not only not influence cerebrospinal fluid drainage, but also can be used as an important monitoring means of drainage, ensures the safety of drainage, and simultaneously
6. The beneficial effects of the intracranial pressure monitoring device are the same as those of the intracranial pressure monitoring method, and are not described in detail herein.
Drawings
Fig. 1 is a schematic perspective view of an intracranial pressure detection device used in the intracranial pressure monitoring method of embodiment 1 of the present invention.
Fig. 2 is a first perspective view of the intracranial pressure detection device in fig. 1.
Fig. 3 is a second perspective view of the intracranial pressure detection device in fig. 1.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
Referring to fig. 1, 2 and 3, the present embodiment provides an intracranial pressure monitoring method for monitoring intracranial pressure by an intracranial pressure detecting device. The intracranial pressure detection device comprises a pressure measuring probe 1, and can also comprise a connector 5, a sensor interface and a host machine. The intracranial pressure detection device is a tool for monitoring the method, and is used in combination with a simple operation. The monitoring method of the embodiment is different from the existing intracranial pressure monitoring method, can be carried out in cooperation with an operation, can not only not influence cerebrospinal fluid drainage, but also can be used as an important monitoring means of drainage, ensures the safety of drainage, and simultaneously eliminates a series of problems caused by the utilization of a communicating vessel.
The pressure measuring probe 1 is provided with a plurality of detection holes 4 which are contacted with intracranial cerebrospinal fluid. The surface of the pressure measuring probe 1 is covered with a film, and the film covers the detection hole 4. The front end 2 of the pressure measuring probe 1 has a cavity communicating with the detection aperture 4, and the cavity is filled with a conductive medium. The conductive medium may be an inert gas or other medium. The rear end 3 of the pressure measuring probe 1 is communicated with the front end 2, and a pressure sensor is arranged in the pressure measuring probe. In the present embodiment, the main body portion of the pressure measuring probe 1 is mainly constituted of a front end 2 and a rear end 3, both of which are cylindrical in structure and are cylindrical in shape. The radius of the front end 2 is larger than that of the rear end 3, and one end of the front end 2 far away from the rear end 3 is hemispherical, and the front end 2 is detachably connected with the rear end 3. Therefore, after the pressure measuring probe 1 is used once, the front end 2 can be discarded as a disposable consumable, and the rear end 3 and the internal sensor can still be used continuously, so that on one hand, the fact that the film for detecting intracranial pressure each time is unused is ensured, the detection is more accurate, and on the other hand, the part with higher value in the pressure measuring probe 1 is still used, thereby improving the utilization rate of devices and reducing the monitoring cost. It should be noted here that the front end 2 and the rear end 3 may be replaced by other names in other embodiments, such as the front half and the rear half, but the specific structure and shape may be the same as those in the present embodiment.
The plurality of detection holes 4 are arranged around the central axis of the pressure measuring probe 1 and are arranged on the side wall of the pressure measuring probe 1. Each detection hole 4 is elliptical, and the long axis direction is parallel to the central axis of the pressure measuring probe 1. The detection hole 4 is provided in the front end 2, i.e. in the side wall of the front end 2. In this embodiment, the number of the detection holes 4 is three, the three detection holes 4 are arranged at equal intervals, and the total area of the three detection holes 4 is as large as possible, so that the side face of the front end 2 is occupied maximally, and a sufficiently large contact surface with cerebrospinal fluid is ensured. In practice, the detection aperture 4 is of sufficient area to allow the movable membrane to be of sufficient area to adequately compress the conductive medium and to allow a sufficient volume change in the conductive medium. Thus, these three holes can increase the contact area with hydrocephalus to achieve a more accurate measurement.
The pressure measuring probe 1 is a polymer probe, and the film is a polymer film. The high molecular compound is adopted to form the pressure measuring probe 1, the strength of the pressure measuring probe 1 is good, and the flexibility and the restorability of the film are good due to the adoption of the high molecular material, so that the film is pressure-resistant and sensitive in response, the pressure change of cerebrospinal fluid can be detected more accurately, and the detection accuracy and precision of intracranial pressure are improved.
The pressure sensor is used for detecting the pressure of the thin film by sensing the pressure of the conductive medium, and the intracranial pressure detection device converts the pressure into intracranial pressure. The pressure sensor can adopt the existing optical fiber pressure sensor, and the corresponding optical fiber of the pressure sensor passes through the ventricle and can be connected with external equipment. The optical fiber is connected to the pressure sensor by a connector 5. In the embodiment, when the pressure measuring probe 1 is specifically installed, under the clinical aseptic condition, the anterior horn of the ventricle on the right side of the patient is selected for puncturing, the skull is drilled at a preset distance I behind the hairline or a preset distance II above the arch of the eyebrow, a preset distance III beside the midline, and the puncturing direction is perpendicular to the connecting line of the two external auditory meatus. The preset distance I can be 2cm, the preset distance II can be 9cm, and the preset distance III can be 2.5cm, and of course, the preset distances can be determined according to actual needs and are specifically determined according to the body condition of each patient.
The sensor interface is mounted on the back end 3 and is connected with the pressure sensor. The sensor interface is the interface of the pressure sensor and the optical fiber, so that the optical fiber or the rear end 3 of the pressure measuring probe 1 can be conveniently replaced, and the installation and the disassembly are also convenient. The sensor interface may employ an existing fiber optic sensor interface that connects the fiber optic sensor and the optical fiber.
The host is connected with the pressure sensor through an optical fiber and is used for displaying intracranial pressure and pressure waveforms. The host comprises a micro control unit MCU, a grating analysis module, a photoelectric conversion module, an A/D conversion module, a touch/display module, an I/O interface, an IP interface, a power supply, a laser modulation module, an optical coupler and the like. Firstly, the pressure measuring probe 1 is connected with a pressure sensor, then the device is implanted into a ventricle, then the pressure sensor receives the pressure change of the cerebral effusion on the film, and then an optical signal is transmitted back to the host computer through an optical fiber, and the host computer displays the pressure change on a screen of the host computer, so that the cerebral effusion pressure and the pressure change can be intuitively monitored.
Wherein the intracranial pressure monitoring method comprises the following steps (1) - (5).
(1) The pressure sensor is connected to the pressure measuring probe 1 and a pressure transmission path is formed from the membrane to the pressure sensor. In practice, the front end 2 and the rear end 3 are connected together and filled with a conductive medium, thus forming a pressure transmission path.
(2) The pressure measuring probe 1 is implanted in the ventricle of the patient, and the intracranial pressure is conducted on the membrane of the pressure measuring probe 1 by using cerebrospinal fluid in the ventricle. Before implantation, the relevant medical staff can form the implantation path of the pressure measuring probe 1 through drilling, and the specific drilling mode can be selected according to actual needs. Of course, the drilling means is not limited to the brain drilling of an actual patient, but can also drill a human brain model, i.e., can be used as a large-scale drilling method. It should be noted that the human brain model is a tool for clinical experiments of the monitoring method in this embodiment, which can exercise the drilling technique of medical staff on one hand, and can provide a basis for the design of intracranial pressure detection equipment on the other hand.
(3) The pressure sensor converts the cerebrospinal fluid pressure change into a grating signal. In this embodiment, the signal may be converted by the host, or may be converted by another interface.
(4) And the grating signal is transmitted to a photoelectric analysis module through an optical fiber, so that the photoelectric analysis module converts the grating signal into an electric signal. The photoelectric analysis module may be directly disposed in the host computer, or may be disposed outside the pressure measurement probe 1, and in some embodiments, may even be disposed in the pressure measurement probe 1.
(5) The electrical signal is converted into a pressure waveform representing intracranial pressure and displayed. In this embodiment, the pressure waveform and the real-time intracranial pressure value are directly displayed on the display screen of the host computer, so that the user can directly observe the change condition of the intracranial pressure. That is, the optical fiber sensor generates a grating signal through the optical coupler, and the grating signal is input into the micro-control unit for processing through grating analysis, photoelectric conversion and analog-to-digital conversion to form a pressure waveform.
In summary, compared with the existing intracranial pressure measurement method, the intracranial pressure monitoring method of the embodiment has the following beneficial effects:
1. according to the intracranial pressure monitoring method, the pressure measuring probe 1 is placed in cerebrospinal fluid in a ventricle, a film on the pressure measuring probe 1 deforms under the pressure action of the cerebrospinal fluid, then pressure is applied to a conducting medium in a cavity, the conducting medium transmits the pressure and is applied to a pressure sensor, so that the pressure sensor generates a signal positively related to the intracranial pressure and then converts the signal into a grating signal, the grating signal is converted into an electric signal after being analyzed by a photoelectric analysis module, and finally the electric signal is converted into a pressure waveform of the intracranial pressure and displayed, and therefore the cerebral pressure and the pressure change can be intuitively monitored. Because in the in-process of monitoring, pressure measurement probe 1 is independent of other equipment, just so can carry out operations such as drainage in the monitoring, because the size of pressure measurement probe 1 is less moreover, optical fiber sensor and corresponding optic fibre are all thinner simultaneously, can realize the drilling of pressure measurement probe 1 and insert to utilize the principle of air conduction to detect, need not to utilize the principle of communicating vessel, easy operation can synchronous implementation cerebrospinal fluid drainage.
2. The intracranial pressure monitoring method senses the pressure of cerebrospinal fluid by utilizing the detection function of the film, and the film can be a high polymer film which is pressure-resistant and sensitive in response, so that the pressure change of the cerebrospinal fluid can be more accurately detected, and the detection accuracy and precision of the intracranial pressure are improved.
3. According to the intracranial pressure monitoring method, the used pressure measuring probe 1 is provided with the front end 2 and the rear end 3, the front end 2 and the rear end 3 are detachably connected, so that after the pressure measuring probe 1 is used once, the front end 2 can be used as a disposable consumable, the rear end 3 and an internal sensor can still be used continuously, on one hand, the fact that a film for detecting intracranial pressure at each time is unused is guaranteed, the detection is more accurate, and on the other hand, a part with higher value in the pressure measuring probe 1 is still used, and therefore the utilization rate of devices is improved, and the monitoring cost is reduced.
4. The intracranial pressure monitoring method is different from the existing intracranial pressure monitoring method, can be used in cooperation with an operation, can not only not influence cerebrospinal fluid drainage, but also can be used as an important monitoring means of drainage, ensures the safety of drainage, and simultaneously eliminates a series of problems caused by the utilization of a communicating vessel.
Example 2
This example provides a method of intracranial pressure monitoring that adds the following steps to that of example 1.
It is determined whether intracranial pressure exceeds a pressure threshold.
When the intracranial pressure exceeds a pressure threshold, sending out a pressure overload alarm signal and releasing the intracranial fluid through the drainage tube, and continuously measuring the intracranial pressure.
Therefore, in the embodiment, whether the intracranial pressure exceeds the pressure threshold value is also judged, if so, an alarm signal is sent out and the intracranial pressure is released from cerebrospinal fluid through the drainage tube, so that the intracranial pressure is prevented from being too large, and drainage operation can be performed while the intracranial pressure is detected, thereby ensuring continuous and effective intracranial pressure monitoring.
Example 3
This example provides a method of intracranial pressure monitoring that adds the following steps to that of example 1.
Before the pressure measuring probe 1 is placed, a conducting medium is filled into the cavity, so that the film bulges, and the detection value of the pressure sensor is recorded;
and setting the pressure value displayed at the host computer at the moment to be zero or taking the pressure value as a datum line, and then placing the pressure measuring probe 1.
Thus, the present embodiment can ensure that the membrane slightly bulges in the initial state, so that when the pressure measuring probe 1 is placed in cerebrospinal fluid, the pressure measuring probe will be pressed by the cerebrospinal fluid, and then the conductive medium will be pressed, and the detection value of the pressure sensor will be changed, i.e. increased, while the data displayed at the host will be increased, so that the increased value can reflect the intracranial pressure.
Example 4
This embodiment provides an intracranial pressure monitoring device which applies any one of the intracranial pressure monitoring methods provided in embodiments 1-3. Wherein the monitoring device comprises an intracranial pressure detection device and an intracranial pressure monitoring mechanism.
The intracranial pressure detection device comprises a pressure measuring probe 1 and a pressure sensor. The pressure measuring probe 1 is provided with a plurality of detection holes 4 which are contacted with intracranial cerebrospinal fluid. The surface of the pressure measuring probe 1 is covered with a film, and the film covers the detection hole 4. The front end 2 of the pressure measuring probe 1 has a cavity communicating with the detection aperture 4, and the cavity is filled with a conductive medium. The rear end 3 of the pressure measuring probe 1 is communicated with the front end 2, and a pressure sensor is arranged in the pressure measuring probe. The pressure sensor is used for detecting the pressure of the thin film by sensing the pressure of the conductive medium, and the intracranial pressure detection device converts the pressure into intracranial pressure.
The intracranial pressure monitoring mechanism is used for connecting the pressure sensor with the pressure measuring probe 1, forming a pressure transmission path from the film to the pressure sensor, then implanting the pressure measuring probe 1 into the ventricle of a patient, conducting intracranial pressure to the film of the pressure measuring probe 1 by using cerebrospinal fluid in the ventricle, converting the change of the cerebrospinal fluid pressure into a grating signal by the pressure sensor, and finally converting the electric signal into a pressure waveform representing intracranial pressure and displaying the pressure waveform.
The advantages of the intracranial pressure monitoring device according to the present embodiment compared to the existing intracranial pressure monitoring device are described in embodiments 1-3, and are not described here.
Example 5
The present embodiment provides a computer terminal comprising a memory, a processor, and a computer program stored on the memory and executable on the processor. The steps of the intracranial pressure monitoring method of example 1 are implemented when the processor executes the program.
When the intracranial pressure monitoring method in embodiment 1 is applied, the method can be applied in the form of software, such as a program designed to run independently, and is installed on a computer terminal, wherein the computer terminal can be a computer, a smart phone, a control system, other internet of things equipment and the like. The intracranial pressure monitoring method in embodiment 1 can also be designed into an embedded running program which is installed on a computer terminal, such as a singlechip.
Example 6
The present embodiment provides a computer-readable storage medium having a computer program stored thereon. The program, when executed by a processor, implements the steps of the intracranial pressure monitoring method of embodiment 1.
When the intracranial pressure monitoring method of embodiment 1 is applied, the method can be applied in the form of software, such as a program designed to be independently run on a computer-readable storage medium, which can be a usb disk, designed as a U shield, through which the program of the whole method is designed to be started by external triggering.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (7)
1. An intracranial pressure monitoring device, comprising:
an intracranial pressure detection device comprising a pressure measurement probe and a pressure sensor; the pressure measuring probe is provided with a plurality of detection holes which are contacted with intracranial cerebrospinal fluid; the surface of the pressure measuring probe is covered with a film, and the film covers the detection hole; the front end of the pressure measuring probe is provided with a cavity communicated with the detection hole, and the cavity is filled with a conductive medium; the rear end of the pressure measuring probe is communicated with the front end, and the pressure sensor is arranged in the pressure measuring probe; the pressure sensor is used for detecting the pressure of the thin film by sensing the pressure of the conducting medium, and the intracranial pressure detection device converts the pressure into the intracranial pressure;
one end of the front end far away from the rear end is hemispherical, and the front end is detachably connected with the rear end;
the intracranial pressure monitoring mechanism is used for connecting the pressure sensor with the pressure measuring probe, forming a pressure transmission path from the film to the pressure sensor, implanting the pressure measuring probe into a ventricle of a patient, conducting intracranial pressure to the film of the pressure measuring probe by using cerebrospinal fluid in the ventricle, converting pressure change of the cerebrospinal fluid into a grating signal by the pressure sensor, and finally converting an electric signal into a pressure waveform representing the intracranial pressure and displaying the pressure waveform;
the intracranial pressure detection device further comprises a host; the host is connected with the pressure sensor through an optical fiber and is used for displaying the intracranial pressure and the pressure waveform;
the using method of the intracranial pressure monitoring device comprises the following steps:
(1) Connecting the pressure sensor with the pressure measurement probe and forming a pressure transmission path from the membrane to the pressure sensor;
before the pressure measuring probe is placed, filling a conducting medium into the cavity to enable the film to bulge, and recording the detection value of the pressure sensor;
setting the pressure value displayed at the host computer at the moment to be zero or taking the pressure value as a datum line, and then placing the pressure measuring probe in the host computer;
(2) Implanting the pressure measurement probe into a ventricle of a patient, and conducting intracranial pressure to a membrane of the pressure measurement probe by using cerebrospinal fluid in the ventricle;
(3) Converting cerebrospinal fluid pressure into a grating signal by the pressure sensor;
(4) Transmitting the grating signal to a photoelectric analysis module through an optical fiber, so that the photoelectric analysis module converts the grating signal into an electric signal;
(5) The electrical signal is converted into a pressure waveform representative of the intracranial pressure and displayed.
2. The intracranial pressure monitoring device as recited in claim 1, wherein a plurality of detection holes are disposed around a central axis of the pressure probe and open on a sidewall of the pressure probe; each detection hole is elliptical, and the long axis direction is parallel to the central axis of the pressure measuring probe.
3. The intracranial pressure monitoring device as recited in claim 1, wherein the radius of the anterior end is greater than the radius of the posterior end, and the detection Kong Kaishe is on the anterior end.
4. The intracranial pressure monitoring device as recited in claim 1, wherein the pressure measuring probe is a polymer compound probe and the membrane is a polymer membrane.
5. The intracranial pressure monitoring device as recited in claim 1, wherein the intracranial pressure detection apparatus further comprises a sensor interface; the sensor interface is mounted on the rear end and is connected with the pressure sensor.
6. The intracranial pressure monitoring device as recited in claim 1, wherein the fiber optic sensor generates the grating signal via an optocoupler, and the grating signal is input to a micro-control unit for processing via grating resolution, photoelectric conversion, analog-to-digital conversion to form the pressure waveform.
7. The intracranial pressure monitoring device as recited in claim 1, wherein the method of use further comprises:
judging whether the intracranial pressure exceeds a pressure threshold;
and when the intracranial pressure exceeds the pressure threshold, sending out a pressure overload alarm signal and releasing the intracranial fluid through a drainage tube, and continuously measuring the intracranial pressure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010972177.3A CN111990986B (en) | 2020-09-16 | 2020-09-16 | Intracranial pressure monitoring method and device |
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| CN202010972177.3A CN111990986B (en) | 2020-09-16 | 2020-09-16 | Intracranial pressure monitoring method and device |
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| CN113180632B (en) * | 2021-05-06 | 2022-11-29 | 吉林大学 | Intracranial pressure detection equipment for patient with cerebroma |
| CN115998278B (en) * | 2023-02-23 | 2023-06-20 | 华科精准（北京）医疗科技有限公司 | Drainage tube capable of monitoring intracranial pressure and intelligent intracranial pressure monitoring and management system |
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| CN102205162A (en) * | 2011-06-17 | 2011-10-05 | 南京航空航天大学 | Drain tube for intracranial pressure monitoring |
| CN109091132A (en) * | 2018-06-28 | 2018-12-28 | 西安交通大学 | A kind of device measuring intracranial pressure |
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| DE102005020569B4 (en) * | 2005-04-30 | 2010-08-05 | Aesculap Ag | Implantable device for detecting intracorporeal pressures |
| US10709879B2 (en) * | 2017-03-29 | 2020-07-14 | Wisconsin Alumni Research Foundation | Cerebrospinal-fluid shunt valve system |
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| CN102205162A (en) * | 2011-06-17 | 2011-10-05 | 南京航空航天大学 | Drain tube for intracranial pressure monitoring |
| CN109091132A (en) * | 2018-06-28 | 2018-12-28 | 西安交通大学 | A kind of device measuring intracranial pressure |
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