30 results about "Cerebral ventricular" patented technology

A method and apparatus for extracting a cerebral ventricular system from images of one or more cerebral ventricular regions comprises defining multiple regions of interest (ROI) in the images, defining seed points within each ROI, growing images of ventricular regions while correcting for leakages into extraventricular space and connecting the ventricular regions grown.

The invention relates to an adjustable external ventricular drainage device fixing frame. The fixing frame comprises a fixed box, a height adjusting rod and an angle adjusting rod, wherein a groove isformed in one side of the fixed box; the locking screw penetrates through the fixed box and extends into the groove; the locking screw is in threaded fit with the fixed box; a gear cavity is furtherformed in the fixed box; gear is arranged in the gear cavity, the gear is connected with a height adjusting knob arranged outside the fixed box through a rotating shaft; a rack is arranged on one sideof the height adjusting rod; the height adjusting rod penetrates through the fixing box and a rack on the height adjusting rod to be matched with the gear, a rotating shaft is arranged at one end ofthe height adjusting rod and penetrates through the head of the height adjusting rod, an angle adjusting knob is arranged at one end of the rotating shaft, the other end of the rotating shaft is connected with the end of the angle adjusting rod, and a hook is arranged on the angle adjusting rod. The fixing device is used for fixing and supporting the external ventricular drainage tube and the drainage device, the height and angle can be adjusted at will, it can be guaranteed that the relative position of the drainage device and the head is fixed, and operation is convenient.

Described herein is the use of CSF, more particularly external CSF or CSF-like compositions for the treatment and prevention of different diseases. More particularly, the application provides for the administration of CSF to the intrathecal space or the cerebral ventricles of a patient to increase intracranial pressure and / or CSF flow.

The present invention relates to a pharmaceutical composition for treating cerebrovascular diseases including stem cell-derived exosomes as an active ingredient. The stem cell-derived exosomes according to the present invention have superior nerve cell protective effects, such as inhibition of cerebral ventricular distention, reduction of hydrocephalus, and inhibition of nerve cell death and cellular inflammation in an intraventricular hemorrhage (IVH) animal model, and thus, can be useful in treating cerebrovascular diseases including intraventricular hemorrhage, etc.

The invention discloses a training method and device for improving a ventricular segmentation model, electronic equipment and a medium. The method comprises the following steps: acquiring a normal brain sample image; acquiring a standard brain image and a ventricular label corresponding to the standard brain image, wherein the standard brain image is a human brain three-dimensional image in a preset standard space, and the ventricular label is used for marking the position of a ventricular area; calculating a transformation relation between the normal brain sample image and the standard brain image; converting the ventricular tag of the standard brain image into a space coordinate system corresponding to the normal brain sample image based on the transformation relation to obtain the ventricular tag of the normal brain sample image; performing three-dimensional image deformation processing on the plurality of normal brain sample images and the ventricular labels of the normal brain sample images to obtain a plurality of ventricular deformation sample images and ventricular labels of the ventricular deformation sample images; and training the network model by using a sample data set to obtain a ventricular segmentation model, the sample data set comprising a plurality of ventricular deformation sample images and ventricular tags of the plurality of ventricular deformation sample images.

A ventricle drainage tube comprises a catheter and a drainage bag, a flow limiting valve is additionally inserted between the catheter and the drainage bag. The flow limiting valve comprises a valve cylinder, a narrow channel cover, which is in thread connection with one end of the valve cylinder and allows a liquid to pass and enter the valve cylinder, and a buffer cylinder, which is in thread connection with the other end of the valve cylinder and is used for discharging the liquid, and a buffer partition plate that extends from the inner wall to the cylinder center is arranged in the buffer cylinder; a supporting seat with a plurality of through holes is arranged on the inner side of one side, close to the buffer cylinder, of the valve cylinder, a supporting rod is arranged on the supporting seat, a spring is sleeved on the supporting rod, and the tail end of a spring is ejected into the tail end of a valve pin; and the valve pin abuts against the opening edge of a narrow channel opening, communicated into the valve cylinder, of the narrow channel cover. The height limitation of a traditional drainage tube is eliminated, and the intracranial hydrops pressure difference between the drainage tube and a patient can be automatically balanced and adjusted through a flow limiting valve. Compared with other equipment, the cost is low, disposable use can be realized, and safety and sanitation are realized. In addition, the flow velocity can be inhibited in a certain procedure in the early drainage stage through the buffer cylinder, and too fast drainage is prevented.

An implantable intracranial pulse pressure modulator for treating hydrocephalus in patients of all ages is disclosed as well as a system and method for use of the same. In one embodiment of the implantable intracranial pulse pressure modulator, two one-way valves are interposed in parallel, opposing orientations between a vestibule and a chamber. One of the one-way valves, in response to systole, provides fluid communication from the vestibule to the chamber such that a small aliquot of cerebrospinal fluid (CSF) is displaced from a cerebral ventricle into a ventricular catheter, thereby reducing intraventricular systolic pressure. The other one-way valve, in response to diastole, provides fluid communication from the chamber to the vestibule such that the same volume of CSF is reintroduced into a cerebral ventricle, thereby increasing intraventricular diastolic pressure. Together, both processes work synergistically to reduce intraventricular pulse pressure in order to treat hydrocephalus.

The invention discloses a ventricular puncture model and belongs to the field of medical teaching instruments. The ventricular puncture model is characterized by comprising a skull model, a brain model and a thrombus model; a skull is divided into an upper skull structure and a lower skull structure from the temporal part; a detachable component is arranged between the upper skull structure and the lower skull structure; holes are formed in the left and right sides of the top of the upper skull structure of the skull; a brain model comprises left and right ventricle models and a third ventricle model; the third ventricle model is arranged in the left ventricle model and the right ventricle model; the surface of the brain model is provided with grooves; venation plexus is arranged in the brain model; a specific hydrogel material is adopted, so that the touch feeling is simulated; key brain structures such as left and right ventricles and a third ventricle in an intracranial hyperbaric state are included, and important brain characteristics such as cerebral gullet, venation plexus and the like are contained; and through the design of the auxiliary fixing device and the cerebral groove position, the model can be repeatedly used for brain puncture operations such as third ventricular fistulization and cerebral hematoma aspiration, and the teaching experiment effect can be greatly improved.

The invention discloses a ventricle puncture guiding device, which belongs to the technical field of medical devices and can solve the problems of complicated, time-consuming, high cost, strong subjectivity, and high puncture difficulty in the prior ventricle puncture. The ventricle puncture guiding device includes: a first positioning structure; it includes a first positioning plate, the first positioning plate has a concave first arc edge; the first arc edge is used to fit the first line on the surface of the skull; The second positioning structure; it includes a second positioning plate and a plurality of third positioning plates; the plurality of third positioning plates are sequentially movably connected head to tail to form a fitting, and the second positioning plate and the plurality of third positioning plates are located on the same plane; The side edges in the length direction of the fitting are used to fit the second line on the surface of the skull; the first line and the second line are perpendicular or intersect; the second positioning plate includes a first side edge close to the first positioning plate, and the first side edge It is used to be in close contact with the surface of the first positioning plate to form an angle line. The invention is used for ventricle puncture.