84 results about "Semicircular duct" patented technology

An optical-signal vestibular-nerve stimulation device and method that provides different nerve stimulation signals to a plurality of different vestibular nerves, including at least some of the three semicircular canal nerves and the two otolith organ nerves. In some embodiments, balance conditions of the person are sensed by the implanted device, and based on the sensed balance conditions, varying infrared (IR) nerve-stimulation signals are sent to a plurality of the different vestibular nerves.

An optical-signal vestibular-nerve stimulation device and method that provides different nerve stimulation signals to a plurality of different vestibular nerves, including at least some of the three semicircular canal nerves and the two otolith organ nerves. In some embodiments, balance conditions of the person are sensed by the implanted device or external device, and based on the sensed balance conditions, varying laser nerve-stimulation signals are sent to a plurality of the different vestibular nerves.

A heat exchanger assembly includes an outlet header extending along an outlet axis to define an outlet cavity and an inlet header defining an inlet cavity. A plurality of refrigerant tubes extends from the inlet header through the outlet header and into the outlet cavity. A collector conduit having a generally semi-circular conduit cross-section defining an arced surface and a chord surface interconnected with rounded ends is disposed in the outlet header and includes a conduit body portion and at least one conduit end portion interconnected by a conduit transition portion with the conduit body portion being offset from the conduit end portion. The conduit body portion is engaged to an interior surface of the outlet header to space the conduit body portion from the refrigerant tubes and the conduit end portion is coaxial with the outlet header axis to provide a central outlet for the refrigerant vapor.

A one-camera, binocular, video-oculography (1CBVOG) system for measuring the movement of both of the eyes of a test subject, while the head of the test subject is undergoing a period of vestibular or oculomotor stimulation, includes: (a) a base frame, (b) a binocular imaging component, including a video camera adapted to capture a sequence of images containing both of the eyes of the test subject, (c) an optical component, (d) an illumination source, (e) a sensor module that senses translational and rotational motion of the head along and about three, mutually orthogonal axes that approximately align with the axes of the inner ears' semicircular canals, and (f) a computing device configured to quantify and measure the movement of the test subject's eyes from the sequence of captured images.

An image display device capable of reducing the burden on a passenger and reducing the occurrence of motion sickness, by giving the passenger, through a visual sense, perception (visually induced self-motion perception) of his / her own body moving while viewing an image of a TV and the like in a vehicle, and thus by matching visual information to vestibular information obtained from the motion of the vehicle, particularly to a sense of rotation and somatosensory information which are detected by his / her semicircular canals, is provided. The image display device includes: a behavior detection section (101) for detecting a behavior of a vehicle; a background image generation section (102) for generating a background image based on the behavior detected by the behavior detection section (101); an image generation section (103) for generating an image; an image transformation section (104) for, based on the behavior detected by the behavior detection section (101), transforming the image generated by the image generation section (103); a composition section (105) for making a composite image of the background image generated by the background image generation section (102) and the image transformed by the image transformation section (104); and a display section (106) for displaying the composite image made by the composition section (105).

The invention relates to a body position rotating device, which comprises a host machine and at least one bracket, wherein the host machine comprises a transmission mechanism and a rotating device which is driven by the transmission mechanism to rotate, the rotating device comprises at least one rotating shaft, and the bracket is connected with the rotating shaft in a rotation way. The invention also relates to a body position rotating system containing the body position rotating device. During the diagnosis and treatment process, the system can precisely control the variation speed of the patient body position and the space position of the patient, so the diagnosis and the treatment of the semicircular canal dysfunctional diseases are more accurate and more reliable.

The invention provides a device for inducing a plurality of vestibular illusions. The device comprises a revolving chair device for changing the input signals of the semicircular canals of human body vestibular organs, a head shaking device for changing the input signals of the semicircular canals of the human body vestibular organs, a vestibular electrical stimulation device for changing the input signals of the semicircular canals of the human body vestibular organs and otolith, and a control computer for controlling the revolving speed and the revolving time of the revolving chair device, the shaking manner, the angular velocity and the shaking time of the head shaking device, and the type and the strength of the stimulating current and the stimulating time of the vestibular electrical stimulation device, and displaying related parameters in real time. According to the device for inducing the plurality of vestibular illusions, the devices are used independently or combined in use to effectively induce a plurality of vestibular illusions of a human body such as somatogyral illusion, coriolis illusion and somatogravie illusion; as a result, the device can be applied to the ground-based simulation of the vestibular illusions of pilots, and further can be applied to related training about the floor space disorientation of the pilots, and therefore, accidents caused by space disorientation can be reduced.

The invention provides a device for inducing a human body sensory conflict, which comprises a reversal vision device, a vestibule electric stimulation device and a proprioception stimulation device, wherein the reversal vision device is used for reversing visual signals received by a human eye up and down or left and right; the vestibule electric stimulation device is used for changing input signals of a semicircular canal and an aural calculus of a vestibular organ of a human body; and the proprioception stimulation device is used for changing sensory signals of a proprioceptor to somatic movements in neck muscles and muscle tendons of the human body. The device for inducing the human body sensory conflict can effectively induce the human body to generate the sensory conflict by using the reversal vision device, the vestibule electric stimulation device and the proprioception stimulation device singly or together, can be used for performing test analysis on functions of body balance and hand operation control during the sensory conflict, and can be further used for related trainings of the human body under the condition with the sensory conflict; besides, the device finds an optimal training mode by comparing different training methods to improve the endurance capacity of the human body to the sensory conflict and reduce the occurrence probability of motion sicknesses.

The inventors have demonstrated that they can deliver therapeutic compositions to the inner ear of mammals via a variety of routes including the round window membrane, the semicircular canals, via cochleostomy and through the stapes footplate. Using pancaspase inhibitors, the inventors have shown that relatively large volumes of compositions can be injected with little to no hearing loss.

The invention relates to a body position rotating device, which comprises a host machine and at least one bracket, wherein the host machine comprises a transmission mechanism and a rotating device which is driven by the transmission mechanism to rotate, the rotating device comprises at least one rotating shaft, and the bracket is connected with the rotating shaft in a rotation way. The invention also relates to a body position rotating system containing the body position rotating device. During the diagnosis and treatment process, the system can precisely control the variation speed of the patient body position and the space position of the patient, so the diagnosis and the treatment of the semicircular canal dysfunctional diseases are more accurate and more reliable.

An optical-signal vestibular-nerve stimulation device and method that provides different nerve stimulation signals to a plurality of different vestibular nerves, including at least some of the three semicircular canal nerves and the two otolith organ nerves. In some embodiments, balance conditions of the person are sensed by the implanted device, and based on the sensed balance conditions, varying infrared (IR) nerve-stimulation signals are sent to a plurality of the different vestibular nerves.

Embodiments disclosed herein mitigate motion sickness by disrupting, controlling, or influencing anatomy of the vestibular system. An embodiment may induce vibrations in the vestibular system, including otoliths and / or semicircular canals of the inner ear, causing noisy or unreliable sensory information to be sent to the brain from the vestibular system. Due to the noisy or unreliable quality, the brain, as part of a normal physiological response, may rely less on sensory information from the vestibular system and rely more on other sources, thereby mitigating the motion sickness response, vertigo, vestibular migraines, and other physiological responses to inconsistent sensory information. Vibrations in the vestibular system may be induced by an agitator placed on an individual's head near the vestibular system, or by a transducer placed near the eardrum or directly on an individual's head. Some embodiments may optionally include implantable components in addition to extracorporeal components.

The invention discloses an artificial-cilia-based simulated-cochlea-semicircular-canal-contained rotation acceleration sensor comprising more than one hollow bending pipeline. Two ends of the pipeline are communicated with a sealed container; and the pipeline and the container are filled with insulating liquid. More than one protruding fiber unit is arranged on a crista ampullaris part inside each pipeline. According to the invention, the sensor is divided into three units distributed in a space coordinate system layout, thereby sensing rotation at different direction. When the overall sensor is rotated, the fiber units at three directions are deformed differently; and because of different electrode positions, charges or voltages generated on the electrodes are different. Therefore, the direction and value of the multi-dimensional rotation accelerated speed can be determined by analyzing polarity and values of three fibers by a charge amplifier and a processing unit.

The invention discloses benign paroxysmal positional vertigo intelligent diagnosis and treatment equipment. The equipment comprises a correction host, a nystagmus recorder and an operation bench, wherein the correction host is used for carrying out a nystagmus induction test and reset treatment on a patient; the nystagmus recorder is used for collecting nystagmus video information of the patient during a nystagmus induction test process; the operation bench includes an upper computer system and a main control module; and the upper computer system includes a nystagmus video module, a diagnosistest module, a reset treatment module, a real-time navigation module and a system parameter configuration module. In the invention, automatic and intelligent diagnosis and treatment of vertigo are realized; an accurate diagnosis and treatment scheme of semicircular canal real-time navigation can be provided for a special patient, and breakthrough and innovation of a technology are realized; and domestic related industry development can be effectively promoted and a growing healthy development demand is satisfied.

A vestibular stimulation array is disclosed having one or more separate electrode arrays each operatively adapted for implantation in a semicircular canal of the vestibular system, wherein each separate electrode array is dimensioned and constructed so that so that residual vestibular function is preserved. In particular, the electrode arrays are dimensioned such that the membranous labyrinth is not substantially compressed. Furthermore, the electrode array has a stop portion to limit insertion of the electrode array into the semi-circular canal and is stiff enough to avoid damage to the anatomical structures.

The invention relates to a simulation semicircular canal otolith total head model. The model comprises a head model, a fixation ring, semicircular canal rings used for simulating human semicircular canals, metal collars used for simulating otoliths and magnets. The semicircular canal rings are fixed on the head model according to the positional relationship of 3 pairs of human semicircular canals. Each semicircular canal ring is provided with a metal collar used for simulating the otoliths and a magnet used for fixing the metal collar. Each semicircular canal ring is made of a plastic material. According to another scheme, a transparent tube accommodating transparent liquid is used to simulate a human semicircular canal; a metal ball in the transparent tube is used to simulate an otolith; and the transparent tube is provided with a supporting part. The model provided by the invention simulates three pairs of human semicircular canals on both sides, can simulate all kinds of otolith disease symptoms, and can demonstrate a variety of reduction techniques.

The invention discloses a vestibule balance function examining, acclimatizing and correcting device. The vestibule balance function examining, acclimatizing and correcting device comprises an operation control system and a mechanical and power servo system, an autonomous control system, a three-dimensional visual real-time simulation system and a medical physiological signal monitoring and recording system mutually and electrically connected with the operation control system. The vestibule balance function examining, acclimatizing and correcting device establishes a three-dimensional rotating system which can be quantitatively controlled, meanwhile can perform three-dimensional compound motion to stimulate three pairs of vestibular semicircular canals and further can detect nystagmus electrographs and other physiological signals so as to achieve the effects of conducting comprehensive vestibule balance evaluation on an examined, acclimatized and corrected object, improving the vestibule balance and orientation functions of the object and correcting motion sickness.

The invention provides a device capable of providing a simulated spatial disorientation scene for a subject and meanwhile recording the eye movement condition of the subject. The eye movement measurement device mainly comprises a head-mounted display device for providing a visual task for the subject, an eye movement tracking module for recording the eye movement condition of the subject in real time, a vestibule electrical simulation device for changing an input signal of a semicircular canal of a vestibule organ of a human body and providing vestibule electrical simulation for the subject and a control computer for controlling the simulation manner, the simulation current mode, the strength and the simulation time of the vestibule electrical simulation device, controlling the visual task displayed by the head-mounted display device, displaying relevant parameters in real time and recording the eye movement data transmitted back by the eye movement tracking module in real time. By means of the device, the visual task and the vestibule electrical simulation can be exerted on the subject at the same time, and meanwhile the eye movement condition of the subject is recorded; and in this way, a researcher can investigate the eye movement condition when the vestibule task and the visual task are exerted on the subject at the same time, meanwhile the burden of equipment installation and set is lowered for the researcher, the good eye movement experiment condition is provided, and research on the spatial disorientation is facilitated.

A mechanical stimulator for evoking a hearing percept by directly generating waves of fluid motion of fluid in a recipient's semicircular canal. The mechanical stimulator comprises a sound processing unit configured to process a received sound signal; and an implantable stimulation arrangement, comprising: a stapes prosthesis having a first end configured to be positioned abutting an opening in the semicircular canal, an actuator configured to receive electrical signals representing the processed sound signal and configured to vibrate in response to the electrical signals, and a coupler connecting the actuator to the stapes prosthesis such that vibration of the actuator results in waves of fluid motion in a recipient's semicircular canal that evoke a hearing percept of the received sound signal.

The invention discloses a BBPV real-time three-dimensional navigation system. The BBPV real-time three-dimensional navigation system comprises a head posture detection device and an information receiving end. The head posture detection device is carried on the head of a patient and used for outputting posture detection signals after head postures of the patients are detected in real time. The information receiving end is coupled to the head posture detection device, internally stores a three-dimensional semicircular canal model to receive the posture detection signals and adjusts the spatial orientation of the three-dimensional semicircular canal model according to the posture information in the posture detection signals. The information receiving end is internally provided with a displayscreen which is used for displaying the three-dimensional semicircular canal model after the spatial orientation is adjusted. The BBPV real-time three-dimensional navigation system can effectively detect head postures of patients by arranging the head posture detection device and the information receiving end, then present a model in the information receiving end, and then conduct auxiliary treatment through the model.

The invention provides a wearable eardust returning device. The wearable eardust returning device comprises a vestibule model and a fixing strap, wherein the vestibule model comprises a semicircular canal model and an accommodating bag; the semicircular canal model comprises a front semicircular canal, a rear semicircular canal and an external semicircular canal; the accommodating bag comprises acenter accommodating cavity and a sound penetrating cavity; transparent liquid is stored in the semicircular canal model and the center accommodating cavity; and two ends of the front semicircular canal, two ends of the rear semicircular canal and two ends of the external semicircular canal are all located in the center accommodating cavity. In the treatment process of the wearable eardust returning device disclosed by the invention, the situation that eardust cannot be seen in the ear is converted into the situation that the eardust can be seen from outside, the position of an eardust simulacrum in the semicircular canal when a patient is under different body positions can be seen, the kinematic trajectory of the eardust in the semicircular canal can be more intuitively observed by a doctor, so that the patient is told to alternate an appropriate body position, the fallen eardust is returned to the vestibule, the success rate of eardust returning can be effectively increased, and thepain of the patient is alleviated.

The invention provides a multiplanar reconstruction method. The multiplanar reconstruction method comprises the following steps: acquiring a tomographic image; locating a target region where a semicircular canal is located in the tomographic image; determining a centerline of the semicircular canal in the target region; and generating a multiplanar reconstruction image of the semicircular canal inaccordance with the centerline of the semicircular canal. The invention also provides a multiplanar reconstruction system.

The invention discloses a temporal bone model for surgery training and a forming method thereof, which belong to the technical field of ear surgery training aids. The temporal bone model for surgery training comprises a cortical bone, a cancellous bone, a semicircular canal, an ear bone and a face neural tube, wherein the cancellous bone is of a porous structure; the semicircular canal and the face neural tube are of cavity structures; the ear bone is of a solid structure; the semicircular canal, the ear bone and the face neural tube are integrally formed by adopting aluminum oxide ceramics through 3D (Three-dimensional) printing; the cancellous bone is prepared from three raw materials: mixed powder, water and graphite powder; the mixed powder is prepared from mixing 85 percent by weightof clay and 15 percent by weight of feldspar powder; the cortical bone is prepared from two raw materials: mixed powder and water. The invention provides the temporal bone model for surgery training and the forming method thereof. The temporal bone model for surgery training is higher in biofidelity, lower in manufacturing cost, and capable of greatly improving a surgery training effect, shortening a doctor training period, reducing doctor training cost, and benefitting patients.

The invention relates to an otolithiasis treatment apparatus, which comprises a head strap, a bracket and semicircular canal models, wherein the bracket comprises a connecting portion and a convex portion; the connecting portion is connected to the head strap and the convex portion; and the semicircular canal models are detachably arranged on the bracket. According to the otolithiasis treatment apparatus provided by the invention, the manual reduction of a doctor becomes visible by simulating semicircular canals of a human body, so that the success rate of the manual reduction is improved and pain in patients is relieved.

The otolithiasis therapeutic instrument with the calibration function comprises a semicircular canal model and a calibration device; the calibration device comprises a left barrel and a right barrel which are arranged in parallel, two transparent reference pieces are arranged in each barrel in the front-back radial direction, calibration marks are marked on the reference pieces, and the positionsand directions of the front calibration mark and the rear calibration mark correspond to each other; a left-right gradienter used for calibrating the left-right levelness is arranged in the horizontalcalibration cylinder and located behind the reference sheet, and a front-back gradienter used for calibrating the front-back levelness is arranged in the front-back calibration cylinder and located behind the reference sheet. By calibrating the relative positions of the head and the device body, the positions of the head and the device body are synchronous, and the semicircular canal model and the human semicircular canal are consistent in direction. After synchronization, the left-right gradienter and the front-back gradienter can be used for adjusting the head position to be horizontal to enable the otolith position to return to zero. A doctor can visually know the position of the otolith without depending on the imagination ability of himself / herself.

The invention discloses an inner ear balancer demonstration teaching aid, which comprises an inner ear model and an eyeball model, and the inner ear model simulates an inner ear structure of a human body and comprises a bone semicircular canal and an elliptical sac and / or a balloon, and simulated otolith particles made of a magnetic material are placed in the elliptical sac and / or the balloon; theeyeball model comprises a simulated eyeball, a simulated extraocular muscle and a supporting structure; and the outer wall of the elliptical sac and / or the outer wall of the balloon are / is fixedly connected with an electromagnetic tractor. When the simulated otolith particles are separated from the normal position, the electromagnetic tractor tensions the simulated extraocular muscles to enable the eyeballs to vibrate, and when the simulated otolith particles are reset, the eyeballs return to normal. The demonstration teaching aid visually prompts a doctor to perform otolith reduction throughtremor of eyeballs, and has very strong clinical guidance.

The invention discloses a BPPV diagnosis and reset training teaching device. The device comprises a fixing cap worn on a head, a vestibular model and three pairs of semicircular canal models are detachably arranged on the two sides, corresponding to the ears, of the fixing cap. The three pairs of semi-regular pipe models are arc-shaped pipelines. A cavity is formed in the vestibular model; the cavity is communicated with the three pairs of semicircular canal models. Each of three pairs of semicircular canal models comprise an upper semicircular canal, a rear semicircular canal and a horizontalsemicircular canal; touch chips are arranged on the inner side walls of the upper semicircular canal, the rear semicircular canal and the horizontal semicircular canal and in the vestibular model, the touch chips are connected with one another and are connected with a computer terminal through transmission lines in the vestibular model, and otolith steel balls for simulating otolith are arrangedin the three pairs of semicircular canal models. According to the invention, otolith movement and reduction techniques are simulated in the semicircular canals, so that doctors in the ear-nose-throatdepartment and the neurology department can quickly understand and quickly and skillfully master the diagnosis and reduction methods to perform timely diagnosis and effective reduction on a patient; the disease course is shortened obviously and the pain of the patient is alleviated.

The invention discloses a portable eyeshade for positioning injured semicircular canals according to nystagmus, which relates to the field of clinical medicine and comprises an eyeshade body, a fixing plate and a high-speed camera. High-speed cameras are arranged on two sides in the eyeshade body, an infrared lighting module is arranged at one end of each high-speed camera, an inertial measurement unit is arranged in the eyeshade body on one side close to the two high-speed cameras, and a processor is arranged in the eyeshade body on the top of the inertial measurement unit; a fixing plate is movably installed at one end of the eyeshade body, connecting buckles are fixedly connected to the two sides of the eyeshade body, and a head band is movably installed on the outer sides of the connecting buckles. The high-speed camera, the infrared lighting module, the inertial measurement unit and the processor are integrated on the light-weight eyeshade body, the head band connected with the connecting buckle is matched to achieve wearable performance, large equipment is not needed, the nystagmus detection convenience and timeliness are improved, the head band is adjusted in an adaptive mode, the wearing oppression feeling of a patient can be reduced, and the examination experience is improved.