7 results about "Intracranial Cavity" patented technology

The invention provides a semi-intrusive brain-computer interface device, which belongs to the technical field of brain-computer interfaces, and comprises an electroencephalogram signal acquisition unit, a signal processing unit, a decoding unit, a control interface unit and an external equipment unit which are electrically connected in sequence, the electroencephalogram signal acquisition unit adopts a flexible electrode structure, is configured to be implanted into a cranial cavity, does not penetrate through the cerebral cortex and is used for acquiring a cortex electroencephalogram signal; the signal processing unit is used for filtering, amplifying and digitally processing the electroencephalogram signals; the decoding unit is used for classifying and identifying the electroencephalogram signals; and the control interface unit supports a multi-mode interface. According to the invention, a semi-intrusive design is adopted, the invasiveness and safety are balanced, the full-intrusive rejection risk is also avoided, compared with a non-intrusive design, the signal analysis precision is improved, neural features of different patients are adapted in a personalized manner, fine regulation and control of an object track and force in a complex three-dimensional environment are realized, and the control limitation of a traditional system is solved.

The present application relates to the technical field of intracranial blood vessel ultrasound training model, specifically to an intracranial blood vessel TCD simulation training model, comprising a peristaltic pump, the input end and the output end of the peristaltic pump are connected with conveying pipelines, the peristaltic pump is provided with a head model on one side, the head model comprises a head model body, the head model body has a simulated cranial cavity, the top of the simulated cranial cavity has a placing opening, the upper part of the placing opening has an openable cover; the outer side of the head model body has a temporal window, an occipital window and an eye window; the inside of the simulated cranial cavity is filled with a plurality of brain tissue simulation gels, the brain tissue simulation gels are embedded with adjustable simulation blood vessel network structures arranged according to the structure of Willis ring, the input end and the output end of the adjustable simulation blood vessel network structures are respectively connected with the output end and the input end of the peristaltic pump. The present application solves the problems that the existing clinical TCD doctor training relies on direct operation on patients, has many defects, lacks special simulation training model, cannot evaluate the accuracy of doctor operation and limits the application of TCD technology.

The application discloses a brain intracranial cavity segmentation method and device based on a U_Net model, and relates to the technical field of picture semantic segmentation.The application constructs a multistage down-sampling encoder and a corresponding up-sampling decoder in a U-shaped structure, adds an efficient attention mechanism to improve segmentation accuracy, and utilizes a multistage feature fusion module to fuse features; and the optimal segmentation model is trained on a training set.The down-sampling encoder fused with a residual block avoids the gradient vanishing phenomenon caused by excessively deep network, and the attention mechanism is introduced in the middle layer between the down-sampling and the up-sampling to further improve the sensitivity to the target region.Three sizes of convolution kernels are used to segment the image to improve the receptive field of the target region.The application has a deeper network and thus has stronger feature extraction capability, and can mine the target region in a more complex image.Multiple calculation modes make the model structure more flexible and variable, better adapt to business scenarios, and improve the generalization capability of the model.

The application discloses an intracranial hematoma ultrasonic crushing device and relates to the field of medical equipment, which comprises an ultrasonic vibration rod, an adhesion device and a reflux pipe, the reflux pipe is arranged at the end of the adhesion device far from the ultrasonic vibration rod, and a reflux pipe inner cavity is arranged in the reflux pipe; a drainage pipe and a suction pipe are arranged on the rod end cover. The application can realize ultrasonic crushing and discharge of intracranial hematoma, is clean and complete, avoids residue, enables blood clots to be fully adsorbed and discharged, and enables the cerebrospinal fluid pressure in the cranial cavity to be normal and not to be blocked. The trace suction and supply type purifies the cerebrospinal fluid, does not affect the intracranial pressure, and avoids the phenomenon of unstable intracranial pressure.

The application relates to the field of interventional medical technology, in particular to a percutaneous interventional venous sinus puncture access device. The access device is formed by the mutual cooperation of a balloon catheter, a deflecting catheter and a puncture guide wire, can puncture into the subarachnoid cavity in the cranial cavity on the venous sinus without damaging the brain, break the dura mater and arachnoid, construct a stoma between the pontocerebellar angle pool and the inferior petrosal sinus, and make the cerebrospinal fluid flow from the subarachnoid cavity to the venous sinus, to the jugular vein and to the heart, and participate in blood circulation. The access device can also be used for delivering a shunt, so that the hydrocephalus which can only be effectively treated by operation in the past can be treated by a minimally invasive interventional method, the access device is not used for surgical open operation, the intraoperative trauma is reduced, the operation time is saved, and the possibility of postoperative infection is greatly reduced.

The invention belongs to the technical field of medical apparatus and instruments, and provides a brain tumor interstitial cavity fluid circulation intervention device which comprises a brain intervention device, the brain intervention device is of a spherical net structure, and a collecting hole and a discharging hole are formed in the surface of the brain intervention device; the external circulator is used for being arranged under the scalp outside the craniocerebral cavity to provide power for circulation of interstitial cavity fluid and serving as an intervention portal; the auxiliary circulation assembly comprises an auxiliary circulator and an auxiliary intervention device, and the auxiliary intervention device is of a balloon structure with holes. The brain tumor interstitial cavity fluid circulation intervention device has the functions of accurately monitoring brain tumor evolution in real time, accurately diagnosing tumor recurrence in an early stage and directly and locally treating recurrent tumors, and is used for solving the technical problems of whole-course sampling monitoring and accurate diagnosis and treatment after brain malignant tumor operation; particularly, an interventional tool is provided for solving the technical problems of sampling monitoring, early precise diagnosis and direct local treatment in the recurrence and progression stage after brain malignant tumor treatment.

This disclosure provides a device and method for intracranial multimodal signal detection based on field-effect transistors (FETs). The device includes: a neural probe comprising multiple parallel FETs, each FET configured to acquire extracellular potential signals and brain chemical concentration signals at different locations within the intracranial cavity, and to generate corresponding composite electrical signals using the extracellular potential signals and brain chemical concentration signals at each location; and a decoupling unit electrically connected to the neural probe, configured to acquire each composite electrical signal from the neural probe and decouple each composite electrical signal into a high-frequency physiological electrical signal corresponding to the extracellular potential signal and a low-frequency chemical electrical signal corresponding to the brain chemical concentration signal. This embodiment can simultaneously and accurately acquire high-frequency physiological electrical signals and low-frequency chemical electrical signals at the same location within the intracranial cavity.