188 results about "Head fixation" patented technology

The invention belongs to the technical field of medical auxiliary instruments, and discloses a head position supporting and fixing device for the anesthesiology department, which comprises a base plate, the base plate is connected with a head supporting and fixing assembly, the head supporting and fixing assembly comprises a base, a telescopic piece and a headrest plate, the base is connected with a bandage, a lock catch and a connecting seat, and the connecting seat is in sliding connection with the base. The telescopic piece is connected with the base plate. The connecting base is rotationally connected with the telescopic end of the telescopic piece. The headrest plate is connected with the base through a connecting shaft, an inner spline and a blank part are arranged on the inner side of the base, an outer spline is arranged on the outer side of the connecting shaft, and the axial length of the outer spline is smaller than that of the blank part. The head of a patient is fixed through the bandage, and the fixing stability of the head is good; the pitching angle of the head is adjusted by adjusting the height of the telescopic piece, the swinging angle of the head is adjusted by adjusting the meshing condition between the headrest plate and the spline of the base, and the clinical requirement for the head fixing angle can be fully met.

The invention belongs to the technical field of medical equipment, and particularly relates to an orthosis for the muscular torticollis, in particular to an orthosis applied to correction of the muscular torticollis and a use method of the orthosis. A shoulder fixing assembly; the stepless adjusting assembly comprises a connecting block and a connecting rod, a lifting bar; and an adjusting part. According to the principle that the adjusting shaft moves between the adjacent adjusting teeth of the lifting strip when rotating and drives the adjusting shaft to ascend and descend, the adjusting teeth are distributed at equal intervals, continuous and linear fine adjustment of the distance between the head assembly and the shoulder assembly is achieved, meanwhile, after adjustment is completed, the adjusting shaft of the adjusting piece is inserted into the limiting hole of the connecting block, and the adjusting shaft is driven to ascend and descend. The lifting strip and the connecting block are fixed, the adjusting teeth can be designed to be relatively fine in order to pursue high precision through separation of two independent actions of rotation adjustment and insertion locking, and final firm fixing is achieved through insertion connection of the adjusting shaft and the limiting hole.

This invention relates to the field of neonatal care technology, and more particularly to a neonatal endotracheal tube fixation device, comprising a base, two head limiting plates slidably fitted on the base, a retraction mechanism rotatably connected inside the base, an adjusting seat rotatably connected to the retraction mechanism, a top frame rotatably connected to the adjusting seat, an adjusting plate below the top frame, a buffer plate fixedly connected to one end of the adjusting plate, and an endotracheal tube fixation mechanism on one side of the buffer plate. By using a base with a mattress pressure plate, the mattress is used to fix the mattress pressure plate, so that when fixing the neonatal endotracheal tube, the endotracheal tube fixation mechanism is suspended above the neonatal head without contacting the neonatal head for fixation. This avoids the pressure problems caused by neck straps or head fixation, not only improving care efficiency but also ensuring the safety and comfort of the newborn, and contributing to the healthy development of the newborn.

The invention provides an ophthalmology infrared instrument for vision correction, and relates to the field of vision correction, and the ophthalmology infrared instrument comprises a limiting support base, a swing irradiation part, a limiting support part, a limiting mounting shaft, a guide connecting plate, a sliding connecting block and a head fixing bandage; the swinging irradiation part is rotationally connected to the upper part of the limiting support base; the limiting supporting piece is connected to the front side of the swing irradiation piece in a front-back sliding mode. The limiting mounting shafts are fixedly connected to the left side and the right side of the swinging irradiation part; the guide connecting plate is rotationally connected to the outer side of the limiting mounting shaft; the sliding connecting block is connected to the inner side of the guide connecting plate in a sliding manner; according to the nursing light instrument, the head of a child can be fixed, the vision correction effect is guaranteed, the use effect of the nursing light instrument is improved, and the problem that the vision correction effect is affected due to the fact that the head of a young child shakes unconsciously when the young child uses the nursing light instrument is solved.

The utility model relates to the field of medical treatment, and discloses a head protection frame for interventional operation, which comprises a mounting plate, the top end of the mounting plate is provided with a connecting plate, the top end of the connecting plate is fixedly connected with a supporting column, the outer wall of the supporting column is slidably connected with a round sleeve, and the inner wall of the round sleeve is provided with a limiting mechanism. An electric telescopic rod is hinged to the outer wall of the round sleeve through a hinge rod, a fixed block is fixedly connected to the movable end of the electric telescopic rod, a threaded rod penetrates through and is in threaded connection with the inner wall of the fixed block, a contact plate is rotationally connected to the left end of the threaded rod, and a headstock is fixedly connected to the top end of the supporting column. By arranging the supporting column, the round sleeve, the hinge rod, the head seat, the electric telescopic rod and the contact plate, the contact plate can be quickly close to the head of a patient, threaded adjustment is conducted through the fixing block and the threaded rod, the device can quickly adapt to head fixation of different patients, and the device is simple and convenient in actual operation.

The invention relates to the field of nuclear medicine detection, and discloses a nuclear medicine scanning patient head fixing device which comprises a bed body, a head fixing device capable of being adjusted in a self-adaptive mode according to the size of the head is arranged on the bed body, and a locking device used for locking the head fixing device is arranged on the lower side of the bed body. After the head of a patient is placed on the head placing and fixing device, the head placing device can be adjusted according to the head of the patient, then the locking device is started to lock the head fixing device, and the distance between the two arc-shaped clamping plates can be adaptively adjusted according to the size of the head of the patient through cooperation of the head placing device and the fixing device; and then the two arc-shaped clamping plates are thoroughly fixed through the fixing device, so that the head of the patient can be well fixed, and subsequent nuclear medicine examination is facilitated.

In MRI examinations of patients with acute ischemic stroke, it is often difficult for patients to fix and hold their heads due to impaired consciousness or limb weakness. Therefore, this invention provides a tool that is structurally rational, easy to operate, and effectively enhances the head fixation effect. [Solution] A tool to support MRI examination, comprising a base 1, a head rest member 2 with adjustable anterior-posterior position, a lateral limiting member 3 with an elastic buffer layer, and an adjustment mechanism 4. The head rest member slides relative to the base to adapt to the length of the patient's neck. The lateral limiting member is biased inward by a compression coil spring and flexibly holds both sides of the head with an elastic buffer layer, absorbing and suppressing involuntary movements. The adjustment mechanism uses a single reverse-threaded adjustment rod to synchronously and symmetrically move the left and right limiting plates, enabling precise adjustment according to the head circumference. This effectively limits multi-directional micro-movements of the head during imaging and improves image stability.

The utility model relates to a mouse head fixing operation device, and belongs to the technical field of animal experiment equipment, the mouse head fixing operation device comprises a heatable bottom plate and a clamp assembly used for limiting upper incisor teeth and mouth of a mouse, two stand columns with holes are fixed on the heatable bottom plate, a cross rod is arranged between the two stand columns with holes in a sliding mode, and the cross rod slides in the vertical direction; long movable arms are arranged on the two stand columns with the holes, one ends of the long movable arms are arranged on the stand columns with the holes in a sliding mode in the vertical direction, the other ends of the long movable arms are arranged in an overhanging mode in the direction away from the clamp assembly, ear rods are arranged at the overhanging ends of the two long movable arms in a sliding mode, and the two ear rods slide in the direction close to or away from each other; the device has the advantages that the head of a mouse is further stabilized, secondary damage to the mouse caused by an operation device is avoided, the body temperature of the animal in the operation process is kept constant, and the success rate of the operation and the accuracy of experimental data are guaranteed.

A measuring device for biological information, which is used by attaching it to an arm section of a human body and which is capable of measuring at least one electrocardiographic waveform, includes an electrode element including a shaft section on which screw processing is carried out and a head section, wherein the head section of the electrode element is fixed in a state in which it is in contact with an outer surface of a main body housing, the shaft section is joined with a sensor substrate in the main body housing and is electrically connected to the sensor substrate, and thus the positioning of the sensor substrate in the main body housing and the fixing and electrical connection of the electrode and the sensor substrate can be carried out together.

The invention relates to a CT treatment clinostatism supporting device which comprises a first supporting component, a head fixing component, two arm fixing components and two leg fixing components. The fixing device has the advantages that the head fixing component, the arm fixing component and the leg fixing component are detachably connected to the first supporting component in a bonding mode, and therefore the convenience of installing the head fixing component, the arm fixing component and the leg fixing component on the first supporting component is improved; in addition, the positions of the head fixing component, the arm fixing component and the leg fixing component installed on the first supporting component can be adjusted according to the position of the patient lying on the first supporting component in a prostrate mode and the figure of the patient, and therefore the CT treatment clinostatism supporting device is suitable for most patients.

The utility model relates to medical instrument technical field, concretely relates to a head fixing instrument for medical beach chair position, including forehead limiting band and mandibular limiting band, be equipped with two groups of sliding connection mechanism connection between mandibular limiting band and forehead limiting band, the forehead limiting band end is equipped with first fixed establishment, makes the forehead limiting band both ends detachable fixed through first fixed establishment, and mandibular limiting band is fixed on the beach chair. The utility model discloses through setting up two interlaced limiting bands, makes the patient operation process stability good, and postoperative convenient disposal can reduce medical cost, reduce patient economic burden, and convenient operation operation, increase patient comfort degree, improve patient and medical staff satisfaction.

This invention discloses a negative pressure structure for a CT positioning head clamp, comprising: a base, a forehead retainer pad on the top of the base, negative pressure mechanisms on both sides of the base, and a swing arm rotatably mounted on the top of each negative pressure mechanism. Each negative pressure mechanism includes a mounting assembly, which is fixedly mounted on one side of the base. A telescopic assembly is movably fitted inside the mounting assembly and engages with an arc-shaped groove. A one-way valve assembly is located inside the telescopic assembly. A connecting assembly is located on the top of the mounting assembly for mounting the swing arm. This invention achieves a stable clamping mechanism based on negative pressure, effectively solving the problems of large clamping force fluctuations, release delays, and operational difficulties in existing friction clamping systems. It offers advantages such as providing stable head fixation, reducing clamping force fluctuations and reset delays, improving CT imaging quality, and enhancing operational convenience.

The utility model discloses a body position fixing pad, which belongs to the technical field of medical instruments and comprises a fixing plate, a head fixing device and a body position adjusting device, and the head fixing device and the body position adjusting device are mounted on the fixing plate. The head fixing device comprises a back-raising headrest assembly used for enabling the head to be placed in a back-raising mode and two adjustable fixing assemblies which are arranged on the left side and the right side and used for fixing the head, the back-raising headrest assembly is arranged at the front end of the top of the fixing plate, and the adjustable fixing assemblies are arranged on the back-raising headrest assembly; the adjustable fixing assembly comprises a head bandage, two tightness adjusting parts and two first fixing rings, and fixing parts are arranged at the two ends of the head bandage. By means of the mode, the head of a patient is fixed through the two head bandages, it is avoided that the examination precision becomes low due to shaking of the head of the patient in the examination process, meanwhile, the head bandages can automatically adapt to the height of the head of the patient during fixing through the arrangement of the tightness adjusting components, and the application range is wide.

This invention provides a head positioning device for neurosurgical testing, belonging to the technical field of neurosurgical medical equipment. It includes a housing, with a first electric slide rail nested at the front end of the housing. A head fixation mechanism is installed at the output end of the first electric slide rail. A second electric slide rail is laterally installed at the front end of the housing. The head fixation mechanism is used to position and fix the patient's head. A noise reduction mechanism is installed at the front end of the housing, positioned below the head fixation mechanism. This noise reduction mechanism is used to fix the ears on both sides of the patient's head and reduce noise to alleviate the patient's anxiety. This invention solves the problems of physical sound insulation and psychological stress by fixing the patient's ears on both sides through the noise reduction mechanism. The bite fixation mechanism allows the patient's mouth to bite down on the bite device and supports the patient's jaw, preventing slight head movement and effectively improving the stability of the test data.

The invention belongs to the technical field of medical instruments, and particularly relates to a head stability maintaining and fixing device for a stroke ischemic patient, which comprises a headrest and two side supporting pillows arranged on the headrest, the device further comprises a supporting adjusting mechanism. The supporting adjusting mechanism comprises a containing cavity formed in the side supporting pillow, an electric push rod with a fixing plate is fixedly installed in the containing cavity, and one face of the fixing plate is connected with a sliding block sliding in the containing cavity; the face, away from the fixing plate, of the sliding block is connected with an arc-shaped clamping plate through a ball head, and a buffering pad is arranged on one face of the clamping plate. Through the designed structure, the posture of the head of a patient can be changed when the patient lies in bed, the patient does not only lie flat any more, the head of the patient can be efficiently and stably fixed when the patient inclines, appropriate adjustment is conducted according to the actually needed angle, and therefore oral secretions and vomituses are naturally discharged through gravity; and inhalation pneumonia caused by the fact that oral secretions and vomituses flow back to the airway is avoided.

The invention provides a detachable head fixing device of a DSA machine, and relates to the field of medical auxiliary instruments, the detachable head fixing device comprises a clamping mechanism, a first clamping block, a second clamping block, a third clamping block and a first locking device; the clamping mechanism is clamped on the bed head; the second clamping block is arranged on the clamping mechanism, and the first clamping block and the third clamping block are arranged on the clamping mechanism and are in sliding connection with the clamping mechanism; the first locking device is arranged on the second clamping block, one locking movement end of the first locking device is connected with the first clamping block, and the other locking movement end of the first locking device is connected with the third clamping block. The first clamping block, the second clamping block and the third clamping block are matched with the first locking device to be used for clamping the head of a patient. The problems that a traditional clamping device is slow in operation and low in efficiency are solved.

The utility model provides a body position fixing device for a patient after a complex trachea operation. The body position fixing device comprises a head fixator and a neck and chest adjusting fixator. The neck and chest adjusting fixator comprises a right adjuster, a left adjuster, a jaw supporting part, a left neck fixing part, a right neck fixing part, a left connecting rod, a right connecting rod, a connecting bridge, a left chest attaching part, a right chest attaching part, a left fixing strap and a right fixing strap, wherein the left neck fixing part and the right neck fixing part correspond to the rear side face of the neck. The two ends of the jaw supporting part are rotationally connected with the left adjuster and the right adjuster in a one-way mode respectively, and the rotation direction of the jaw supporting part is anticlockwise when viewed from the right adjuster to the left adjuster; the right adjustor is connected with the right neck fixing part, the left adjustor is connected with the left neck fixing part, and the left neck fixing part and the right neck fixing part are connected through a first hook-and-loop fastener. The utility model solves the problem of how to fix the head and the neck of a patient in the prior art so that the head and the neck of the patient can be kept at a proper angle in a neck anteflexion position.

The present application relates to experimental animal fixing device technical field, especially in a kind of multi-acupoint precision positioning rat electro-acupuncture experiment fixing device.It includes base, base top is equipped with fixed plate, and the both ends of fixed plate are equipped with vertical plate respectively, and the bottom of vertical plate is fixed on the base, and fixed plate is equipped with torso fixing assembly, and the four corners of fixed plate are equipped with four limbs fixing assembly respectively, and the both ends of fixed plate are equipped with head fixing assembly and tail fixing assembly respectively.The technical scheme provided by the present application is realized by the coordinated fixing of the head fixing assembly, torso fixing assembly, four limbs fixing assembly and tail fixing assembly, the stable restraint of rat is realized, and the reliability and repeatability of experimental data are guaranteed;Meanwhile, the layout design of each fixing assembly is reasonable, and the acupoints of rat torso, back, limbs and other parts are not blocked, and experiment personnel can quickly and accurately position multi-acupoint, so as to facilitate simultaneous multi-acupoint electro-acupuncture operation, and improve experimental efficiency.

The utility model discloses a head fixing device for postoperative braking of the head and the neck, which comprises a bottom cushion fixed on a bed surface; the head cushion is arranged on the front side of the bottom cushion and used for supporting the head of the patient; the head fixing assembly comprises a fixing bottom pad, a left fixing headrest, a right fixing headrest and a second bandage; the back of the fixed bottom cushion is fixed on the front of the bottom cushion and covers the headrest; the back surfaces of the left and right fixed headrests are fixed on the front surface of the fixed bottom cushion; the second bandage is used for assisting in fixing the head of the patient; two ends of the second bandage are respectively fixed on the left and right fixed headrests. The left fixed headrest, the right fixed headrest and the second bandage cooperate to realize stable and effective head braking; the left fixed headrest and the right fixed headrest are light in weight, and cannot slide off due to overlarge gravity when the body position of the patient changes; the thickness of the soft lining of the headrest is increased, so that occipital skin and soft tissues are protected from being damaged; the neck pillow increases the supporting force of the cervical vertebra, improves the health of the cervical vertebra of the patient, supplements the fixing effect on the head, and achieves synchronous braking and fixing of the head and the neck.

The invention discloses an intelligent head bracket for ophthalmologic operation. The intelligent head bracket comprises a mounting frame, a positioning rod, a head frame adapter, a bracket body, a head supporting tray, an air pressure type lifting assembly, an adjusting structure and a head fixing structure. Through cooperation of a separated expansion structure and a press-fit closed structure, intelligent distribution of air paths is achieved with the dead weight of the head of a patient as a control signal, the air paths in a pressed area are closed to form a firm bearing face, and the air paths in an unpressed neck area are smooth; by combining a multi-cavity independent fine adjustment structure, a multi-dimensional angle adjustment system and a mechanical locking type head fixing structure, personalized supporting of the head and the neck, fine hardness adjustment in an operation, multi-dimensional body position adjustment and reliable fixing are achieved. The head fixing device can adapt to patients with different head shapes / neck lengths without an electronic sensor, is high in supporting stability and good in comfort, does not interrupt the operation process during operation adjustment, and provides a reliable head fixing solution for high-precision ophthalmologic operations such as cataract and vitrectomy.

This utility model belongs to the field of medical device technology, and particularly relates to a head fixation mechanism for bronchoscopy. Addressing the problem that most existing bronchoscopy head fixation devices only provide a single supine support function, making it difficult to easily switch between supine and lateral positions on the same device, the following solution is proposed: A headrest shell and a headrest base are provided. The headrest base is equipped with a supine headrest and lateral headrests located on either side of it. A headrest groove is formed in the center of the top surface of the headrest shell. One of the supine or lateral headrests is positioned directly below the headrest groove. Temporal fixation clips and forehead fixation straps are provided on the top surface of the headrest shell on either side of the headrest groove. This mechanism allows switching between supine and lateral positions by sliding the headrest base. Combined with disposable sterile pads, it achieves one-person-one-change isolation protection, balancing positional accuracy, head fixation stability, and infection control safety.

The invention provides a head fixing device for mouse eye socket blood sampling, and relates to the technical field of mouse eye socket blood sampling assistion.The head fixing device comprises a bottom plate, a locking bin is connected to the outer wall of the left end of the bottom plate through a plurality of supporting columns, a second sliding rail is arranged at the top end of the locking bin, and a sealing baffle is connected to the inner wall of the second sliding rail through a locking assembly; a first sliding rail is arranged on the right side of the top end of the bottom plate, and second sliding groove plates are fixedly connected to the upper end and the lower end of the outer wall of the first sliding rail. Shaking of a mouse body and a mouse tail is eradicated through double-layer relocking, a bottom plate anti-skid pad guarantees the overall stability of the device, safe and reliable tail restraint is achieved, operation interference is avoided, the head of a mouse naturally and stably leans backwards, lossless rigid fixing is achieved, smooth breathing is guaranteed, reliable body position guarantee is provided for refined operation, and the device is suitable for popularization and application. And the mouse biting behavior is physically inhibited, so that the head positioning precision is enhanced, and the experimental operation safety is remarkably improved.

1. Name of the product in this design: Head fixing device. 2. Purpose of this design: To fix the patient's head during treatment. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The invention discloses a clinical head fixing device for oral and maxillofacial surgery and a communication system, and relates to the technical field of oral and maxillofacial nursing, the clinical head fixing device comprises a patient bed main body, the bottom of the patient bed main body is fixedly connected with a plurality of supporting legs, the top of the patient bed main body is fixedly connected with an outer side baffle, and two sides of the top of the patient bed main body are fixedly connected with outer side handrails; the adjusting mechanisms are arranged on the inner side wall, the top end and the bottom end of the patient bed body, each adjusting mechanism comprises a first screw rod, the first screw rods are connected to the inner side wall of the patient bed body in a two-thread mode, and the top of one first screw rod is fixedly connected with a connecting sliding block; by arranging the adjusting mechanism composed of the two first screw rods, the connecting sliding block and the headrest, and matching with the driving structure and the second screw rod used for adjusting the position of the single headrest, flexible and accurate adjustment of the head supporting height and the distance between the two headrests is achieved.

The utility model discloses a fixing band for PET / CT brain examination, which is characterized in that a band body comprises a fixed end and a movable adjusting end, two opposite sides of a pillow body are respectively provided with a fixed connecting piece and an adjusting opening, a mounting cavity communicated with the adjusting opening is arranged in the pillow body, a rotary adjusting piece is rotatably arranged in the mounting cavity, and the movable adjusting end is connected with the rotary adjusting piece. The movable adjusting end of the belt body extends into the mounting cavity from the adjusting opening and is wound on the rotary adjusting piece, the driving end of the rotary adjusting piece extends out of the end of the pillow body and is connected with a rotary operating piece, the rotary adjusting piece is driven by the rotary operating piece to rotate in different directions so as to tighten or loosen the belt body, and a locking assembly is arranged on the pillow body. And a locking structure is arranged on the rotary adjusting piece. According to the fixing band for PET / CT brain examination, the rotary adjusting piece can be driven to rotate through the rotary operating piece, so that the band body can be rolled or loosened, and the head of an examiner can be fixed to the pillow body.

The invention discloses a multi-dimensional malformation correction traction device for the spine orthopedics department, and relates to the field of medical equipment. The device mainly comprises a head fixing structure, a waist fixing assembly and a spine correction assembly. The head fixing structure comprises a head-basin ring, a head fixing part and an air bag, the head fixing part penetrates through the head-basin ring, a groove is formed in the bottom of the head-basin ring, and the air bag is arranged in the groove; the waist fixing assembly comprises an adjusting structure and a connecting structure, and the adjusting structure comprises a pelvic ring and an adjusting frame; the pelvic ring and the adjusting frame are symmetrically arranged, the pelvic ring and the adjusting frame are connected end to end to define a circular ring structure, and the connecting structure is used for connecting the pelvic ring and the adjusting frame; the spine correction assembly comprises a correction mechanism and a fine adjustment mechanism, the fine adjustment mechanism comprises a first mounting frame, a first adjusting seat, a second mounting frame and a second adjusting seat, the correction mechanism is arranged between the first adjusting seat and the second adjusting seat, and the correction mechanism can stretch out and draw back so that the first adjusting seat can be close to or away from the second adjusting seat.

The invention discloses a postoperative neck exerciser, and relates to the technical field of medical instruments, the postoperative neck exerciser comprises a seat frame and a head fixing frame, the inner side of the head fixing frame is symmetrically and fixedly connected with heating sheets, the inner side of the head fixing frame is symmetrically and rotatably provided with medicine cylinders, and the side, close to the head fixing frame, of a fixing column is provided with a guide rail; the side, close to the head fixing frame, of the fixing column is fixedly connected with an overturning motor, an overturning assembly is jointly arranged between the overturning motor and the head fixing frame, the side, close to the fixing column, of the head fixing frame is fixedly connected with a direction adjusting motor, and a direction adjusting assembly is jointly arranged between the direction adjusting motor and the head fixing frame. The turning assembly and the direction adjusting assembly are used in cooperation, a patient can be assisted in providing left-right rotating and up-down pitching actions, so that uncomfortable symptoms after operation are relieved, meanwhile, magnetic beads on a medicine cylinder are driven to massage and apply medicine to the neck of the patient under driving of a direction adjusting motor, metabolism and discharge of inflammatory substances are accelerated, and the postoperative recovery effect is improved.

The invention discloses a customized intelligent drug release monitoring trigeminal nerve block microneedle system, and relates to the technical field of medical equipment. Comprising a radiography mechanism, and the radiography mechanism comprises a workbench, a C-shaped arm, an X-ray bulb tube and an image detector; the head limiting assembly is used for fixing the head of a patient, the positioning assembly is arranged on the head limiting assembly, the positioning assembly comprises an arc-shaped support and a positioning plate used for positioning an oval hole, the positioning plate can be adjusted around the arc-shaped support, a plurality of needle holes are formed in the positioning plate, and the central axis of any needle hole can coincide with the central axis of the oval hole; when the foramen ovale is positioned, a metal probe is inserted into the needle hole, and after positioning is completed, a microneedle for conveying blocking medicine is inserted through the needle hole. According to the microneedle system for customized intelligent drug release monitoring of trigeminal nerve block, after the head of a patient is fixed, the radiography mechanism is matched with the positioning assembly to obtain the position of the foramen foramen ovale, and the accuracy and safety of blocking drug delivery are improved.

The invention discloses a mouth opening device for oral surgery, which relates to the field of medical instruments for oral surgery and comprises a head fixing component and an upper and lower jaw adjusting mechanism. The head fixing assembly comprises an arc-shaped head hoop, an adjusting bandage with a hook-and-loop fastener, and a U-shaped lower jaw support rotationally connected with the lower portion of the arc-shaped head hoop through a damping rotating shaft. The upper and lower jaw adjusting mechanism comprises an upper jaw supporting plate, a lower jaw supporting plate and an adjusting assembly, a sliding groove is formed in the lower portion of the arc-shaped head hoop, the adjusting assembly is slidably connected with the sliding groove through a telescopic rod, an anti-skid rotating handle is arranged on the adjusting assembly to adjust the distance between the supporting plates, and the device can stably fix the head, avoid shaking in the operation and improve the operation precision. The opening degree can be finely adjusted in real time to adapt to different operation requirements and oral shapes of patients; the silica gel cushion, the inclined plane design and the torsional spring buffering reduce compression stimulation, the comfort level of a patient is high, the device is suitable for children, maxillofacial deformity and other people, and efficient oral surgery diagnosis and treatment are assisted.

This utility model relates to the field of milling chuck technology and discloses a multi-station milling chuck for brake discs. It includes a fixture, a milling head disposed inside the fixture, a limiting component inside the fixture, a fixing component at one end of the fixture, and a clamping block on the outer wall of the fixture. A connecting block is fixedly connected to one end of the fixture. The limiting component includes a first locking block, one end of which is fixedly connected to the outer wall of the milling head. A limiting groove is formed inside the fixture, the outer wall of the first locking block slides within the limiting groove, and the clamping block slides within the outer wall of the fixture. In this utility model, the limiting groove fixes the first and second locking blocks, the second locking block fixes the first locking block, and the clamping block fixes the milling head inside the fixture. This achieves the effect of fixing the milling head during machining and providing precise positioning when changing the milling head, solving the problem of unstable milling head fixation during machining and improving the accuracy of the excitation / demagnetization tool.