14 results about "Skull surface" patented technology

The invention relates to the technical field of ultrasound, in particular to an ultrasonic incident angle correction method, a program product and a self-adaptive transducer. According to the method, an incident wave is emitted to a target object, a reflected wave reflected by the target object is received, and whether the intensity of the reflected wave reaches a preset condition or not is judged; if not, the incident angle is adjusted until the reflected wave reaches the preset condition, the incident angle of the ultrasonic wave can be automatically adjusted in real time, the incident angle is made to be matched with the normal direction of the skull surface, and therefore the problems of sound energy attenuation and efficiency reduction caused by the too large incident angle are avoided; dependence on traditional high-resolution medical imaging equipment is reduced, and a complex and time-consuming individualized customization process is omitted; the skull penetrating efficiency of ultrasonic energy is improved, the output energy and the focusing effect of the whole transcranial focusing ultrasonic system are optimized, and the reliability and effectiveness of a treatment scheme are improved accordingly.

This invention discloses a method for measuring cranial thickness based on bioelectrical impedance analysis (BIA), comprising: dividing the target region into subdivisions using the finite element method (FEM) to establish a finite element model; acquiring surface voltage signals of the skull using a four-electrode method on a brain electrical impedance imaging platform; obtaining the conductivity distribution of each node of the triangular element by solving the inverse voltage problem; inputting the conductivity distribution into the finite element model and calculating the distance between the node with the largest resistivity change and the corresponding boundary voltage node by solving the forward problem, thus obtaining the skull width at a set of signal locations; measuring the node voltages and calculating the corresponding skull thickness using a sixteen-electrode cyclic excitation method; and finally, assembling all node voltages and skull thicknesses into a plane to obtain the overall skull thickness. This invention designs a method for measuring cranial thickness based on bioelectrical impedance analysis (BIA), providing an accurate method for calculating cranial thickness.

A system for the real-time detection of cerebral ischemic events using multichannel near-infrared spectroscopy, comprising: a head-attachable structural assembly made of a flexible or semi-rigid biocompatible substrate configured to conform to the skull surface of a subject; a plurality of near-infrared light-emitting units embedded in the structure and arranged in a spatially distributed configuration over predefined areas corresponding to brain regions; a plurality of photodetector units arranged at predetermined distances from the respective light-emitting units to define a plurality of measurement channels, each measurement channel configured to receive diffusely reflected near-infrared light from the underlying brain tissue;a signal acquisition unit electrically coupled to the photodetector units and configured to convert received optical signals into corresponding electrical signals, and additionally amplifying, filtering, and digitizing them; a processing unit operationally coupled to the signal acquisition unit and configured to calculate fluctuations in cerebral oxygenation based on the digitized signals and to identify patterns indicative of cerebral ischemic events in real time; and a communication unit configured to transmit processed data and event notifications to an external system.

The utility model discloses a kind of electromagnetic shielding's mouse brain deep electrical stimulation and collection device, including protective shell and shielding shell, protective shell bottom is equipped with opening, top is equipped with connecting port, opening is fixedly adhered with animal skull surface, electrode main body, adapter terminal wire and USB conversion interface connected in sequence are equipped in protective shell, electrode main body implants in animal brain through opening;Shielding shell is inserted with connecting port, shielding shell is inserted with connecting port in, USB interface and preamplifier are equipped in shielding shell, USB interface connects USB conversion interface, preamplifier is connected host computer by data line and passes out shielding shell.The utility model, the production and composition of electrode are modularized split, standardization production and surgical implantation process;Modularization installed USB conversion interface hardware cost is very small, improve the Omnetics interface utilization of host computer;USB conversion interface and electrode main body between using adapter terminal wire, namely soft line connection, can avoid the screw drop caused by multiple plug and unplug, prolongs the implantation time of electrode.

The utility model discloses a scalp scar incision knife for the edge of a bone window, which is divided into an L type and a T type, and each type is divided into two edging directions, namely a clockwise edging direction and an anticlockwise edging direction; the T-shaped scalpel comprises a scalpel handle, a first blade or a second blade, the scalp of a surgical part of a patient is transversely and longitudinally cut open at the same time through the additional arrangement of the first blade or the second blade, and the convenience of medical staff in surgical use is improved; a downward edged blade and an upward edged blade are arranged on the blade side, the skull side blade is edged downwards, periosteum and skull of a patient are separated, the downward blade can prevent the scalp from being too thin, and it is guaranteed that the blade is tightly attached to the surface of the skull to be pushed. The blade in the bone window is edged upwards, so that damage to meninx and brain tissue of a patient caused by the blade can be avoided, the use safety is improved, the situation that medical staff frequently replace tools in the operation process is avoided, and the use difficulty of the medical staff is reduced.

The artificial skull structure comprises an artificial skull main body and a supporting foot, the supporting foot is connected to the periphery of the artificial skull main body and extends outwards, and the artificial skull main body is provided with an inner surface and an outer surface opposite to the inner surface. The projected area of the outer surface of the artificial skull body on a plane parallel to the skull surface is larger than the projected area of the inner surface of the artificial skull body. The supporting feet are arranged on the periphery of the artificial skull main body, so that a stable supporting point is provided for the artificial skull main body; the projected area of the outer surface of the artificial skull main body is larger than that of the inner surface of the artificial skull main body, so that the overall displacement resistance, collapse resistance and external impact resistance of the artificial skull main body are enhanced, and the safety of intracranial tissues is effectively protected.

The application discloses a multifunctional regulation cap type light device based on skull bone marrow-brain function area mapping, and belongs to the technical field of photobiomodulation, transcranial light regulation, neural immune regulation, brain function area positioning and wearable medical device. The device comprises a cap type carrier, a light source array, a function mode selection module, a control unit and a telescopic quasi-direct touch light spot cylinder assembly. After a user selects an emotion, pain, movement, cognition, sleep or visual function irradiation mode through the function mode selection module, the control unit calls corresponding irradiation parameters, irradiation timing and target skull surface projection area, drives the light source unit in the target irradiation partition to work, and keeps the non-target partition light source unit in a closed state. Each light source unit is composed of a telescopic quasi-direct touch light spot cylinder assembly, can adapt to local head curvature through independent telescoping and universal swinging, and can guide light energy to the skull lamella layer in a collimating manner.

This invention discloses an implantable closed-loop neuromodulation system and method, relating to the field of neuroengineering, aiming to solve the problems of poor electrode adaptability and slow closed-loop response in existing implantable neuromodulation systems. The system includes intracranial electrodes, a one-to-one matching adapter plate for adapting different electrodes, a feedthrough component, and an implantable host fixed to the skull surface. The processing unit within the host decodes neural signals in real time within 10 ms to determine the brain state; if an abnormality is detected, the stimulation output unit selects a pattern from a preset safe stimulation pattern library to generate stimulation commands for intervention. This application achieves multi-electrode adaptation through the adapter plate and millisecond-level closed-loop response through high-speed processing, improving the timeliness and accuracy of intervention and enhancing safety.

An ultrasound automated detection and display method of cranial abnormal regions includes: firstly, a skull surface model is constructed; then contour detection is carried out based on a two-dimensional ultrasonic image to obtain a skull contour curve; fitting is carried out on the contour curve and the skull surface model to determine whether the two-dimensional ultrasonic image has symmetry characteristics or not; finally, similarity comparison calculation is carried out on two mutually symmetrical regions by utilizing the symmetry characteristics of the two-dimensional image, so that whether an abnormal region exists and the location of the abnormal region is determined. The method has the advantages that a skull surface model is constructed before detecting a cranial contour curve on a two-dimensional ultrasonic image.

The invention discloses an individualized wearable transcranial magnetic stimulation treatment assisted positioning method, which comprises the following steps: based on T1 weighted structure imaging, obtaining a scalp surface, a skull surface and a cerebral cortex surface consistent with an individual head anatomy through surface reconstruction; on the basis of resting state functional magnetic resonance imaging, whole brain function connection analysis is executed to obtain an individualized cortex target spot; identifying anatomical mark points on the scalp surface and constructing a scalp curved surface coordinate system, and projecting the individualized cortex target spot from the cerebral cortex surface to the scalp surface to obtain an individualized scalp target spot position; selecting a scalp curved surface above an ear plane in the scalp curved surface coordinate system as a hood base area, making a three-dimensional model of the individualized positioning hood, and reserving a coil placement area corresponding to the individualized scalp target according to the position of the individualized scalp target; an individualized positioning hood entity is manufactured according to the three-dimensional model, and individualized accurate positioning, repeated placement and standardized operation of transcranial magnetic stimulation are achieved.

The utility model belongs to the field of intracranial image collection, especially a head -wearing intracranial blood vessel image collection analysis appearance, the present equipment cannot be adapted to the skull surface of different patients and lack flexible tightness adjustment, leading to the discomfort of the equipment use, and the data acquisition accuracy is reduced, the present scheme is proposed, it includes elastic headgear and near infrared spectrum sensor, the inner wall fixed setting of elastic headgear has the sponge pad, the top of elastic headgear is annular and is sewed with even distribution's multiple plastic batten, be provided with wearing subassembly on elastic headgear, and this wearing subassembly is convenient for the patient of different head size and wears. The utility model through the combination of elastic headgear, plastic batten and wearing subassembly, not only realizes the self -adaptation of the skull surface of different patients, but also can carry out tightness adjustment, improves the comfort and adaptability of equipment, ensures the safety and stability of long time use.

The invention provides a cranial surface fixing device for living body neural signal acquisition and a living body neural signal acquisition system and method.The cranial surface fixing device comprises a reference bearing device which is configured to be fixedly arranged on the skull surface of a living animal and form a mechanical reference surface; the reference transmission device comprises a transmission platform and a pose adjusting mechanism connected with the transmission platform; wherein the pose adjusting mechanism is used for adjusting the spatial pose of the transfer platform, so that the preset surface of the transfer platform is aligned with an external preset spatial reference, and a clamp reference surface is formed; wherein the transfer platform is configured to releasably bear the reference bearing device, so that when the reference bearing device is borne on the transfer platform, the mechanical reference surface inherits the pose information of the clamp reference surface. According to the invention, pose errors caused by traditional head ring installation depending on visual inspection are eliminated from the source.

The invention relates to the technical field of bionic robots, in particular to a bionic eyebrow movement mechanism which comprises a base frame installed in the head of a robot, and two inner eyebrow mechanisms and two outer eyebrow mechanisms distributed on the base frame. Wherein the inner eyebrow mechanism comprises an inner eyebrow driving source and an inner eyebrow connecting body, and the inner eyebrow driving source is used for driving the inner eyebrow connecting body to move, so that the movement of the eyebrow part is equivalent to rotation around a virtual circle center of a skull center; according to the embodiment of the invention, the inner eyebrow mechanism enables the motion trail of the eyebrow part to be fitted to rotate around the virtual circle center of the center of the skull, so that the eyebrow part fits the surface radian of the skull during motion instead of simple linear stretching, the silica gel skin is effectively prevented from generating bumps or wrinkles, the outer eyebrow mechanism controls the outer eyebrow area to realize overall up-down motion, and the overall production efficiency is improved. Displacement is transmitted through a connecting piece with a large contact surface, so that the outer eyebrow presents a smooth synchronous rising and falling effect in expression change instead of discrete jumping of local point positions.

The present application relates to neurosurgical drilling treatment technical field, specifically speaking, it is a kind of neurosurgical operation drilling device, including drilling gun, the bottom end of the drilling gun is fixedly connected with handle, the handle is fixedly installed with press switch, the drilling gun is equipped with pretreatment mechanism, the pretreatment mechanism includes moving ring and transmission ring, the bottom end of the moving ring is fixedly connected with support seat, one side of the support seat is fixedly connected with pressing rod, one side of the support seat is fixedly connected with spring, the beneficial effects of the present application are that: through the cooperation of charging ring, sponge ring and medical mineral oil of pretreatment mechanism, the mineral oil is evenly applied on the surface of drill bit to form oil film before drilling, which not only reduces the friction heat between drill bit and skull, but also quickly conducts the generated heat, maintains the surface temperature of drill bit and skull in a safe range, and improves the problems of time-consuming operation of traditional instruments, insufficient adaptation to efficient scenes such as emergency.