37 results about "Intracranial pressure" patented technology

The invention provides an analogue simulation method for accumulated craniocerebral injury under the action of multiple shock waves, and relates to the technical field of data processing. The method comprises the following steps: constructing an explosive shock wave model; constructing a head geometric model; the brain, the cerebellum and the brainstem in the solid area are represented through a Mooney Rivlin model; representing the skin, muscles and skull in the solid area through a linear elastic constitutive model; the cerebrospinal fluid in the fluid area is represented through the fluid dynamic model; coupling the fluid region and the solid region through an embedded boundary method; calculating the explosion impact pressure when the explosion impact waves of each turn are transmitted to the head through an explosion impact wave model; through a finite element analysis method, accumulated skull displacement, skull acceleration, skull stress, skull strain and intracranial pressure under the action of each turn of explosion shock waves are determined, and a brain accumulated injury value is calculated.

The invention relates to the technical field of optical fiber sensors, and provides an optical fiber cranium temperature and cranium pressure composite monitoring probe and a preparation method thereof.The optical fiber cranium temperature and cranium pressure composite monitoring probe comprises a pressure diaphragm, a hollow glass tube, a metal coating, a graded-index optical fiber and a single-mode optical fiber, one end of the hollow glass tube is connected with the pressure diaphragm; the metal coating is arranged on one surface, far away from the hollow glass tube, of the pressure diaphragm; the graded-index optical fiber is arranged in the hollow glass tube, and the graded-index optical fiber and the pressure diaphragm are spaced to form an F-P cavity; and one end of the single-mode optical fiber is inserted into the hollow glass tube. The corrugated pressure diaphragm formed by processing the coreless optical fiber is used as a sensitive element, the pressure measurement sensitivity can be greatly improved under the condition of the same diaphragm thickness and diameter, the zero drift of the sensor caused by temperature and moisture is reduced, and meanwhile, the pressure sensitivity can be accurately regulated and controlled so as to adapt to different application scenes such as intracranial pressure, intramental pressure and blood flow pressure.

The invention relates to the technical field of data processing, and discloses a self-adaptive anti-shake control method and system for a mechanical arm of a neurosurgical robot. The method comprises the steps that tissue contact force, intracranial pressure variation and vascular pulsation frequency are collected, jitter feature vectors are obtained through fusion of a neurosurgery special extended Kalman filtering algorithm, compensation strategy parameters are generated through a neurosurgery scene self-adaptive prediction model, a tissue protective super-distortion sliding mode controller outputs a control signal, and the tissue protective super-distortion sliding mode controller is used for controlling the tissue protective super-distortion sliding mode controller. And the intracranial constraint flexible execution mechanism is driven to realize self-adaptive anti-shake control. According to the method, by constructing the extended Kalman filtering algorithm special for neurosurgery based on multi-modal sensor fusion and the LSTM prediction model, and combining with the tissue protective super-distortion sliding mode controller, the jitter suppression precision and the adaptive adjustment capability of the neurosurgical robot in a complex intracranial environment are remarkably improved.

A method and device for reducing the damaging effects of a blast or concussive event includes applying pressure to at least one jugular vein to reduce the egress of blood from the cranial cavity during the incidence of the concussive event. Reducing blood out flow from the cranial cavity increases intracranial pressure of the cerebrospinal fluid to reduce the risk of traumatic brain injury and injuries to the spinal column. Reducing blood out flow further increases the intracranial pressure, and thereby increases the pressure of the cochlear fluid, the vitreous humor and the cerebrospinal fluid to thereby reduce the risk of injury to the inner ear, internal structure of the eye and of the spinal column. In addition, increasing intracranial pressure reduces the likelihood of brain injury and any associated loss of olfactory function.

The invention discloses a multifunctional neural electrode for intracranial pressure detection and closed-loop nerve regulation, the multifunctional electrode sequentially comprises a PMUT electrode for intracranial pressure detection and nerve regulation and a macro-micro electrode for electroencephalogram signal detection from top to bottom, and the PMUT electrode is bonded on the macro-micro electrode. The PMUT electrode is bonded to the macro-micro electrode to serve as a multifunctional electrode, the PMUT electrode can serve as a pressure sensor and can also serve as an ultrasonic transducer, the dual functions of intracranial pressure detection and fixed-point ultrasonic nerve stimulation are achieved, the macro-micro electrode can achieve detection of local field potential and peak potential, and the ultrasonic nerve stimulation function is achieved. Therefore, a detection-feedback-regulation closed-loop system is realized.

The invention belongs to the technical field of medical equipment, and discloses a cerebrospinal fluid sampling device for neurosurgery diagnosis, the cerebrospinal fluid sampling device comprises a puncture needle, a catheter, a collecting tube and a sucker, the puncture needle is provided with a handle, and the outer side wall of the collecting tube is provided with scale marks; the liquid guide pipe is connected with a flow speed control assembly, the flow speed control assembly comprises a base body, the base body is provided with a liquid guide cavity and a control cavity, the inner side of the liquid guide cavity is rotationally connected with a rotating water wheel, the rotating water wheel is coaxially connected with a linkage disc, and the inner side of the control cavity contains shear thickening fluid; and the catheter is also connected with a flow regulator between the puncture needle and the flow rate control assembly. According to the cerebrospinal fluid collecting device, the puncture needle is communicated with the collecting tube through the catheter, and collected cerebrospinal fluid is directly collected and stored in the collecting tube, so that subsequent detection and analysis are facilitated; the flow rate control assembly is connected to the catheter to adaptively control the speed of collecting the cerebrospinal fluid, so that medical injury to a patient caused by too fast change of intracranial pressure is avoided.

The present application relates to the field of data processing technology, and discloses a method and system for adaptive anti-shake control of a neurosurgery robot arm. The method comprises: collecting tissue contact force, intracranial pressure change, and vascular pulsation frequency, fusing the jitter feature vector through a neurosurgery-specific extended Kalman filter algorithm, generating compensation strategy parameters through a neurosurgery scene adaptive prediction model, and outputting a control signal from a tissue-protective super-twisted sliding mode controller to drive an intracranial constraint flexible actuator to achieve adaptive anti-shake control. The present application significantly improves the jitter suppression accuracy and adaptive adjustment capability of the neurosurgery robot in a complex intracranial environment by constructing a neurosurgery-specific extended Kalman filter algorithm and an LSTM prediction model based on multimodal sensor fusion, combined with a tissue-protective super-twisted sliding mode controller.

1. The name of the design product: intracranial physiological parameter monitoring graphical user interface for electronic device. 2. The use of the design product: information display and human-computer interaction for electronic device. 3. The design points of the design product: the interface content of the graphical user interface. 4. The picture or photo that best indicates the design points: design 1 front view. 5. Design 1 is designated as the basic design. 6. The use of the graphical user interface: for intracranial physiological parameter monitoring and / or alarm information display. 7. The change state description of the graphical user interface: for design 1, the design 1 front view is the initial graphical user interface, and the design 1 change state view is the interface after clicking the time drop-down box in the "trend" column in the design 1 front view; for design 2, the design 2 front view is the initial graphical user interface, and the design 2 change state view is the interface in which the alarm icon in the lower right corner of the design 2 front view is switched from the alarm mode to the closed alarm mode; for design 3, the design 3 front view is the initial graphical user interface, and when the intracranial pressure abnormal alarm state is entered, the design 3 front view will jump to the interface shown in the design 3 change state view; for design 4, the design 4 front view is the initial graphical user interface, and when the intracranial temperature abnormal alarm state is entered, the design 4 front view will jump to the interface shown in the design 4 change state view; for design 5, the design 5 front view is the initial graphical user interface, and when the intracranial pressure abnormal and intracranial temperature abnormal alarm states are entered, the design 5 front view will jump to the interface shown in the design 5 change state view; for design 6, the design 6 front view is the initial graphical user interface, and when the implantation time is too long state is entered, the design 6 front view will jump to the interface shown in the design 6 change state view; for design 7, the design 7 front view is the initial graphical user interface, the design 7 change state view 1 is the interface after clicking the right historical information page icon (the third icon from the top to the bottom on the right side) in the design 7 front view, and the design 7 change state view 2 is the interface after entering the password and clicking the "confirm" icon in the design 7 change state view 1; for design 8, the design 8 front view is the initial graphical user interface, and the design 8 change state view is the interface after clicking the right alarm setting icon (the second icon from the top to the bottom on the right side) in the design 8 front view to enter the alarm threshold and alarm switch setting; "X" in all the above interfaces represents a changeable text content area, including text and / or numbers and / or symbols. 8. Other circumstances that need to be explained: no design points involved, omit the rear view, left view, right view, top view, and bottom view of designs 1 to 8; the claimed design in design 6 contains color.

The invention relates to the technical field of medical training instruments, in particular to a neuroendoscope simulation training device which comprises a base, a display screen and a polishing rod, a plurality of air bags are arranged on the inner side of the base and used for extruding a skull model, and an air pressure sensing control mechanism is arranged between the base and the corresponding air bags and used for controlling the pressure of a trainee when the strength of the trainee reaches the pressure in the skull. According to the neuroendoscope simulation training device, the air bag on the inner side of the base is matched with the air pressure sensing control mechanism, when the operation force of a trainee reaches the preset intracranial pressure, the air bag can be extruded to promote a piston disc and a spline shaft to act, and the master control device triggers the alarm; meanwhile, the electromagnetic valve can adjust the air pressure of the pressure reduction cavity, simulate a real intracranial physiological pressure environment, help trainees to train operation skills within a safe pressure range, restore core scenes of pressure sensing and force adjusting in clinic, and avoid disjunction of training effects and clinical requirements.

The invention discloses an intracranial pressure sensor connecting method and device, and belongs to the technical field of medical instruments. The method comprises the following steps that a nylon pipe is pre-fixed in a shell hole, specifically, the nylon pipe penetrates through a round hole in a shell from top to bottom and then penetrates through a square hole from bottom to top to achieve pre-fixing; the varnished wire is welded to the PCB bonding pad, a certain length of the varnished wire is reserved, the tail end of the varnished wire is tinned, and the tinned varnished wire is welded to the tinned PCB bonding pad; and reinforcing the connection part of the nylon tube and the enamelled wire by using glue, namely applying glue to a bottom glue area of the PCB to fix the nylon tube, bending the reserved enamelled wire and fixing the enamelled wire in an enamelled wire glue coating area, and applying glue to a bonding pad glue area to reinforce the connection point of the bonding pad and the enamelled wire. According to the connecting method and device, the technical problem of unstable enameled wire connection in the intracranial pressure sensor is solved, the connecting reliability is improved, and the service life of a product is prolonged.

The invention discloses a gold wire bonding-based temperature and pressure integrated intracranial pressure sensor probe packaging structure, which relates to the technical field of sensors, and comprises a circuit board, a temperature and pressure integrated sensor chip mounted on the upper surface of the circuit board, and a titanium base for bearing the circuit board and the temperature and pressure integrated sensor chip, one end of the hose is inserted into the titanium base; and the glue injection window is formed in the outer wall of the titanium base. According to the invention, the temperature and pressure integrated sensor chip integrated with the Wheatstone full bridge is adopted to replace the traditional dual-chip discrete packaging, so that the chip does not need to be positioned and fixed for many times, the sealing process is simplified from the hardware level, the alignment error problem of multi-chip assembly is solved, and the temperature and pressure integrated sensor can be assembled through a step with a constant height. The height of the circuit board assembled in the titanium base is limited, so that under the assistance of the constant-height circuit board and the constant-height titanium base, the flexible glue injection range in the titanium base is constant, and then the flexible glue injection thickness is accurately controlled.

A method and system for estimating intracranial pressure using a regression model. Optical interferometric measurements related to cerebral blood flow are generated. Intracranial pressure is estimated using a regression model based on optical interferometry and a characteristic of extracerebral blood flow or extracerebral blood pressure.

A method and system for estimating intracranial pressure using a regression model. Optical interferometric measurements of cerebral blood flow are generated. Intracranial pressure is estimated using a regression model based on the optical interferometric measurements and one feature of extracerebral blood flow or extracerebral blood pressure.

The present invention describes a method for estimating an intracranial pressure value of a patient and a method for training a model to be implemented in said estimation method. The present invention specifically comprises a method for estimating the intracranial pressure values of a patient in real time, which incorporates a trained model, implemented in a processor, which interprets datasets of intracranial pressure morphology signals and estimates the intracranial pressure value of the patient from the dataset of the intracranial pressure signal. The present invention pertains to the fields of medicine, neuroscience, electrical engineering and signal processing.

The invention discloses a multi-time temperature compensation method, system and equipment for an intracranial pressure sensor, and relates to the technical field of sensors. The method comprises the following steps: controlling a plurality of preset temperature points through an incubator, and determining the plurality of temperature points as a temperature set; in the state of the target temperature point, obtaining a target temperature ADC value according to each temperature ADC value obtained at each preset moment, and obtaining pressure ADC values under a plurality of pressure points corresponding to the target temperature ADC value; performing calculation according to the pressure ADC values under the plurality of pressure points to obtain corresponding zero offset values and pressure sensitivity; obtaining each zero offset value and each pressure sensitivity corresponding to the temperature set; and substituting the temperature set, and each zero offset value and each pressure sensitivity corresponding to the temperature set into a preset fitting model to obtain a final fitting coefficient value, and importing the final fitting coefficient value into a target memory to output a compensation parameter. According to the method and the device, a dynamic scheme that cubic fitting is preferential and quadratic fitting is automatically switched is adopted, so that over-fitting is effectively avoided, and the adaptability of temperature compensation is improved.

A cranial shunt implantable into a patient, the cranial shunt may comprise a first catheter, a second catheter and a valve assembly operatively coupled with the first and second catheters, the valve assembly comprising an inlet and a microcontroller, wherein the first catheter transfers cerebrospinal fluid (CSF) to the inlet. The cranial shunt may also comprise a pressure sensor configured to provide intracranial pressure (ICP) of the patient to the microcontroller, and a tilt sensor configured to provide an angle of orientation relative to gravity of a cranium of the patient to the microcontroller, where the valve assembly passes or blocks the CSF flow to the second catheter based on instructions from the microcontroller.

The application relates to a cerebroventricular drainage device with convenient adjustment, which comprises a drainage tube and a flow rate regulator arranged on the drainage tube and used for adjusting the flow rate of fluid in the drainage tube, wherein the flow rate regulator comprises a shell, the front side of the shell is provided with an inclined surface which is inclined from top to bottom from front to back, the inclined surface is provided with an adjusting through groove, the adjusting through groove comprises a first sliding groove arranged along the length direction of the inclined surface and a plurality of limiting grooves which are arranged along the length direction of the inclined surface and are in communication with the first sliding groove, and the drainage tube longitudinally penetrates through the shell. The flow rate regulator of the cerebroventricular drainage device can quantitatively extrude the drainage tube, so as to quantitatively adjust the flow rate of the body fluid in the drainage tube. The quantitative adjustment can reduce the dependence on the experience of medical staff, so that the medical staff with insufficient experience can also adjust the drainage speed to the required position according to the treatment needs. Compared with the traditional regulator, the cerebroventricular drainage device is not easy to cause the patient's intracranial pressure to be too low, and thus is not easy to cause danger.

The invention relates to the technical field of medical equipment, and discloses an automatic adjustment hydrocephalus flow divider device which comprises a spring ring, the spring ring is fixedly connected to the right side of the interior of a base, a movable cover is fixedly connected to the left side of the spring ring, a hollow plate is fixedly connected to the left side of the interior of an outer cover, and the exterior of the hollow plate penetrates through the movable cover. A rotating rod is rotationally connected to the middle of the inner side of the hollow plate, first bevel gears are fixedly connected to the front side and the rear side of the rotating rod, second bevel gears are rotationally connected to the front side and the rear side of the right end in the hollow plate, and the second bevel gears are connected with the first bevel gears in an engaged mode. The outer cover is fixed to an affected part through the base, cerebrospinal fluid enters the device and then is discharged into the abdominal cavity through the external pipe, when a patient moves to change the intracranial pressure, flow pushes the spring ring to enable the movable cover to move, the displacement is adjusted according to different exposed lengths of the holes, the distance between the movable cover is adjusted through the rotating rod through the gear set before installation, and the displacement is adjusted in real time according to the intracranial pressure.

A cranial fixation device for decompressive / augmentative craniectomy is described, comprising a lid and a plurality of brackets (3A, 3B, 3C, 3D, 3E, 3F), the device being designed for treating pathologies that cause herniation of the brain with consequent increase in intracranial pressure, of the type that involves the creation of an opening in the skull, by milling along a craniotomy edge, suitable to allow the expansion of the brain and the application of said lid at a certain distance vertically from said craniotomy edge with functions of protection and containment of the brain, the lid being connected to the craniotomy edge by the plurality of brackets (3A, 3B, 3C, 3D, 3E, 3F) which are fixed 20 simultaneously to the lid and to the craniotomy edge.

The present invention provides a method for reconstructing transcranial images using a dual-mode ultrasound phased array probe. The method includes the steps of: controlling multiple channels to irradiate energy onto an intracranial target point in a patient; receiving backscattered energy reflected from the intracranial target point through the multiple channels to generate backscattered radio frequency data for each; and reconstructing an acoustic distribution image in real time based on the backscattered radio frequency data. Compared to pre-treatment ray tracing, the present invention can display intracranial pressure distribution in real time; compared to magnetic resonance thermometry, it can be applied to low-energy applications without temperature changes; and compared to passive cavitation imaging, it can stably present acoustic distribution images without relying on microbubbles.

The present invention discloses an optical MEMS based intracranial pressure (ICP) and intracranial temperature (ICT) monitor, comprising: a broadband light source, a tunable optical filter (TOF), an optical etalon, a plurality of optical receivers, a plurality of optical couplers, and a probe; wherein the probe comprises an ICP sensor and an ICT sensor; ICP is obtained by a depression wavelength of a reflection spectrum of the ICP sensor, the depression wavelength is obtained by comparing with a periodic spectrum with an absolute wavelength mark of an optical etalon; and ICT is obtained by a peak wavelength of a reflection spectrum of the ICT sensor, the peak wavelength is obtained by comparing with a periodic spectrum with an absolute wavelength mark of an optical etalon. The present application can precisely monitor ICP and ICT.

The present invention provides a method for simulating cumulative brain damage under the action of multiple shock waves, and relates to the field of data processing technology. The method comprises: constructing an explosion shock wave model; constructing a head geometric model; characterizing the cerebrum, cerebellum, and brainstem in a solid region using a Mooney Rivlin model; characterizing the skin, muscles, and skull in a solid region using a linear elastic constitutive model; characterizing the cerebrospinal fluid in a fluid region using a fluid dynamic model; coupling the fluid region and the solid region using an embedded boundary method; calculating the explosion shock pressure when each round of explosion shock waves is transmitted to the head using the explosion shock wave model; and determining the cumulative skull displacement, skull acceleration, skull stress, skull strain, and intracranial pressure under each round of explosion shock waves using a finite element analysis method to calculate the cumulative brain damage value.

In a method for non-invasively obtaining information on the intracranial pressure of a patient, during a first interval a plurality of facial veins of the patient, leading from a region surrounding the orbital socket are obstructed by applying external pressure on each of the plurality of facial veins. During the first interval, an external pressure is applied on a designated vein (17) connected to an intracranial vessel, at a location in the region, upstream the obstructions of the plurality of facial veins. A change of geometry of the designated vein (17) is observed, caused by the external pressure to obtain at least one first value related to a venous pressure in the designated vein (17). The at least one first value is processed to obtain the information on the intracranial pressure. The method enables the measurement of a pressure value that is closely related to an intracranial pressure without having to perform the measurement in the intracranial volume. Instead, the obstruction creates a direct communication of pressure between an intracranial vessel and the designated vein on the outside of the head that may be easily examined.

The utility model discloses a special calibration tool for an intracranial pressure sensor, which comprises a constant-temperature box, and a heating component is mounted at the bottom end in the constant-temperature box. By arranging the constant-temperature box, the calibration assembly, the platinum resistor and the air inlet assembly, when detection and calibration are conducted on the intracranial pressure sensors, a worker installs a vacuum sealing cover on a support and then installs the multiple sets of intracranial pressure sensors in an upper sealing seat at the same time, so that the vacuum sealing cover is located above the constant-temperature box; then certain gas pressure is injected into the vacuum sealing cover through the gas inlet assembly, pressure detection is conducted through the cranial pressure sensor, meanwhile, temperature detection is conducted on the cranial pressure sensor through warm water in the constant-temperature box, the platinum resistor can also measure the temperature, and therefore detection and calibration of the cranial pressure sensor are more accurate; the vacuum sealing cover is located above the constant-temperature box so that the risk that water in the constant-temperature box pollutes new products of the intracranial pressure sensors can be avoided, multiple sets of the intracranial pressure sensors can be measured at a time, and the measuring efficiency is improved.

A method and device for reducing the damaging effects of a blast or concussive event includes applying pressure to at least one jugular vein to reduce the egress of blood from the cranial cavity during the incidence of the concussive event. Reducing blood out flow from the cranial cavity increases intracranial pressure of the cerebrospinal fluid to reduce the risk of traumatic brain injury and injuries to the spinal column. Reducing blood out flow further increases the intracranial pressure, and thereby increases the pressure of the cochlear fluid, the vitreous humor and the cerebrospinal fluid to thereby reduce the risk of injury to the inner ear, internal structure of the eye and of the spinal column. In addition, increasing intracranial pressure reduces the likelihood of brain injury and any associated loss of olfactory function.

The invention provides a flow control system for intelligent drainage of cerebrospinal fluid after a nervous system operation. The flow control system comprises a multi-source sensing module, a control module, a multi-parameter fusion decision algorithm module, a safety module and an interaction module, the multi-source sensing module comprises a micro pressure sensor, a biosensor and an inertial measurement unit; the control module comprises an embedded processor and a flow valve; the multi-parameter fusion decision algorithm module is used for collecting intracranial pressure, body position angle and biomarker data in real time and calculating a safe drainage threshold interval; the safety module comprises a dual-pressure verification circuit unit; the interaction module comprises a medical care terminal unit used for data visualization and remote intervention, relates to the technical field of medical instruments, solves the problems of static control, high complication risk, insufficient data integration and high manual dependence degree of an existing cerebrospinal fluid drainage system, realizes self-adaptive accurate control of cerebrospinal fluid drainage, and improves the safety of cerebrospinal fluid drainage. The rehabilitation safety and efficiency of the nervous system postoperative patient are improved.

A medical system and a liquid circulation system, which are capable of efficiently delivering the liquid to the treatment area of the brain while suppressing the fluctuations in the intracranial pressure. The medical system includes a control unit that executes control of setting a first period in which the liquid is injected into the body cavity and the liquid is not discharged from the body cavity and a second period in which the liquid is not injected into the body cavity and the liquid is discharged from the body cavity, and alternately repeating the first period and the second period to set an injection amount of the liquid in the first period to be substantially the same as a discharge amount of the liquid in the second period.

The invention relates to a ventricular drainage tube fixing support device which comprises a main support and a drainage height adjuster and is characterized in that the drainage height adjuster comprises a zero-point adjusting support and a height adjusting scale, the zero-point adjusting support is installed on a vertical rod of the main support in a sliding mode, and the height adjusting scale is installed on the vertical rod of the main support. A locking knob for locking the vertical rod and a zero calibration mechanism for determining a zero point are mounted on the zero point adjusting support; the height adjusting scale is vertically installed on the zero-point adjusting support in a sliding mode, a scale lifting adjusting mechanism is arranged in the zero-point adjusting support, a transverse rod is fixedly connected to the side wall of the height adjusting scale, and a container hook is installed on the transverse rod. The drainage height adjuster is arranged on the main support, so that the ventricular drainage tube can be reliably fixed, the position of the ventricular drainage tube can be kept stable, the position of the highest point of the drainage tube can be accurately adjusted, cerebrospinal fluid drainage is uniform, and it is guaranteed that intracranial pressure is stable.

The utility model belongs to the technical field of medical instruments, and particularly relates to a medical drainage pressure regulating valve which comprises a liquid inlet shell and a liquid outlet shell movably connected with the liquid inlet shell in a clamped mode, a liquid inlet is formed in the outer side of the liquid inlet shell, a center shaft is fixedly connected to the inner side of the liquid inlet shell, a liquid outlet is formed in the outer side of the liquid outlet shell, and the center shaft is fixedly connected to the inner side of the liquid outlet shell. A clamping groove is fixedly connected to the inner side of the liquid outlet shell and connected with the center shaft in a clamped mode, an adjusting device capable of adjusting a threshold value is installed between the liquid inlet shell and the liquid outlet shell, an installation hole is formed in the middle of the adjusting device, and the adjusting device penetrates through the installation hole to be connected with the clamping groove in a clamped mode through the center shaft to be connected with the liquid inlet shell and the liquid outlet shell. According to the cerebrospinal fluid drainage device, cerebrospinal fluid drainage can be dynamically adjusted along with the change of intracranial pressure, meanwhile, cerebrospinal fluid in the drainage pipeline can be prevented from flowing back, the cerebrospinal fluid drainage nursing workload is reduced, and the cerebrospinal fluid drainage safety is improved.

A cranial fixation device for decompressive / augmentative craniectomy is described comprising a lid (4) and a plurality of brackets (3), the device being designed for the treatment of pathologies causing a herniation of the brain with a consequent increase in intracranial pressure, of the type which provides for the creation of an opening in the cranial case, by milling along a craniotomy edge (2), able to allow the expansion of the brain and the application of the lid (4) at a certain vertical distance (d) from said craniotomy rim (2) with functions of protection and containment of the brain, wherein the lid (4) is connected to the craniotomy rim (2) by the plurality of brackets (3) which are fixed simultaneously to the lid (4) and to the craniotomy rim (2).