62 results about "Lateral bending" patented technology

The invention discloses a tool for testing the low-temperature mechanical property of a standard fastener, and relates to the technical field of standard fastener detection. Comprising a main body, a rotating assembly is arranged in a back plate, an adjusting assembly is arranged in a base, a cavity for containing a clamping plate is formed in the base, a moving assembly is arranged in the base, a rubber pad is arranged on one side of the base, and a push-pull assembly is arranged on one side of a connecting frame. The rotating plate rotates to pull the moving frame to slide, so that the moving frame provides support for the middle part of a bolt, the bolt stretching device can adapt to bolts with different thicknesses, and the phenomenon that when the bolt is too long, the bolt is bent due to lateral bending easily caused by tiny lateral force or eccentricity during stretching is prevented; and the angle of the clamping plate is adjusted, so that the problem that the clamping stability of the clamping plate on the bolt is weakened along with the thickness change of the bolt, and the clamping force is eccentric due to the diameter change is solved.

The invention discloses a spine parameter measurement and spine automatic typing method comprising the following steps: obtaining four spine original images of a to-be-detected target in different directions, preprocessing the spine original images, and sending the preprocessed spine original images into an image neural network to obtain key information in the images; and performing parameter measurement and analysis according to the key information to obtain various parameters. And calculating according to the lateral bending Cobb angle, the segment and the sagittal posterior convex angle to obtain a lateral bending type. And judging the relative position relationship between the sacrum perpendicular bisector CSVL and the vertebral pedicle mask to obtain the corrected type of the lumbar curvature. And judging according to the thoracic vertebra posterior lobe of the sagittal plane to obtain a thoracic vertebra sagittal plane correction type. And combining the lateral bending type, the waist bending correction type parting and the thoracic vertebra sagittal plane correction type to obtain a complete Lenke parting. Through automatic identification and automatic calculation, the popularization rate of spine radiation parameter measurement can be effectively improved without professional requirements and thresholds, and the method has very high clinical practical significance and popularization significance.

The invention discloses a scoliosis detection method based on muscle movement and body posture information. The method comprises the following steps: acquiring a corresponding electromyographic signal, a near-infrared signal and an inertial signal for a target spine; inputting the electromyographic signals, the near-infrared signals and the inertial signals into a trained graph neural network model to obtain an end cone of each section of spine; determining the central point of the spine according to the end cone of each section of spine, and calculating the Cobb angle of the scoliosis bending section; and based on the Cobb angle, determining the lateral bending section information of the target spine. According to the method, the accuracy of predicting the scoliosis angle by the neural network model is improved, and early low-cost screening of scoliosis is facilitated.

The invention relates to the technical field of rehabilitation robots, in particular to a rigid-flexible coupling trunk rehabilitation robot and a control method thereof. The invention comprises: a flexible wearing garment; the upper-layer protector is mounted at the upper part of the flexible wearing clothes; the lower-layer protector is mounted at the lower part of the flexible wearing clothes; two lumbar vertebra branch mechanisms; the URS branch chain mechanism is used for adjusting the rehabilitation center to be consistent with the lumbar vertebra rotation center of the human body; the thoracic vertebra branch mechanism is arranged on the inner wall of the upper-layer protector; during wearing, the upper-layer protector is worn at the thoracic vertebra position of a human body, and the lower-layer protector corresponds to the hip joint of the human body. The thoracic vertebra branch mechanism is arranged on the upper-layer protector, the lumbar vertebra branch mechanism is arranged between the upper-layer protector and the lower-layer protector, and the thoracic vertebra branch mechanism and the lumbar vertebra branch mechanism act on the thoracic vertebra and the lumbar vertebra in a synergistic mode, so that partitioned targeted rehabilitation is achieved, namely independent stretching, forward flexion, backward stretching and lateral flexion rehabilitation training of the thoracic vertebra is achieved; therefore, the rehabilitation action of the human trunk is more targeted, the rehabilitation effect is good, and the applicability and the rehabilitation efficiency in the rehabilitation process are greatly improved.

The invention discloses a spine health monitoring method and monitoring device of an intelligent seat, a storage medium and the intelligent seat, and relates to the technical field of spine monitoring, and the method comprises the following steps: obtaining sitting posture information and physiological information of a target user; determining a humpback index and a lateral bending index based on the sitting posture information, and determining a fatigue index based on the physiological information; determining a health monitoring grade based on the humpback index, the lateral bending index and the fatigue index; and controlling the air pressure of a motor and / or an air bag of the intelligent seat based on the health monitoring grading result. Therefore, according to the method, the air pressure of the motor and the air bag of the intelligent seat is hierarchically controlled based on the humpback index, the lateral bending index and the fatigue index, dynamic intervention of the sitting posture can be realized, and the accuracy of spine health monitoring is improved.

The utility model discloses a scoliosis correcting device, which belongs to the field of scoliosis correction and comprises a first correcting component and a second correcting component, the first correcting component comprises a plurality of straps, two ends of two straps are fixedly connected with first correcting blocks, two ends of the other straps are fixedly connected with second correcting blocks, and the second correcting blocks are fixedly connected with the second correcting blocks. Rubber bands are installed in the first correcting blocks and the second correcting blocks located on the two sides of the strap, and one side of each first correcting block and one side of each second correcting block are fixedly connected with a first side band and a second side band correspondingly. The first correction assembly is matched with the second correction assembly, so that the spine at the lateral bending position of a user can be accurately corrected, the practicability of the correction device is improved, meanwhile, the spine at the back of the user can be corrected, and the universality of the correction device can be improved.

The invention provides a collision dummy, relates to the technical field of collision dummies, and can improve the reliability of collision test data. A thoracic section spine structure of the collision dummy comprises at least two first rigid thoracic vertebra pieces and at least two flexible thoracic vertebra pieces, the first rigid thoracic vertebra pieces and the flexible thoracic vertebra pieces are alternately arranged in the extending direction of the thoracic section spine structure and are sequentially connected end to end, and rib pieces are fixedly connected with the first rigid thoracic vertebra pieces. The rib parts and the first rigid thoracic vertebra parts are arranged in a one-to-one correspondence mode, and the at least two rib parts are slidably connected with the sternum part in the extending direction of the thoracic segment spine structure. According to the collision dummy provided by the invention, compression and extension of the flexible thoracic vertebra piece enable the thoracic segment spine structure to generate motions such as bending, extension and lateral bending, so that the collision dummy can generate responses such as forward bending, backward bending and lateral turning, and the injury condition of the collision dummy in collision is relatively consistent with the injury condition of a real human body; the reliability of collision test data can be improved.

A racquet including a frame including a head portion, a handle portion, and a throat portion. The head portion forms a hoop that defines a string bed plane. The head portion of the racquet being formed of a fiber composite material. When the racquet is tested under the racquet lateral bending test, the racquet has a lateral deflection of at least 6.5 mm when measured in a first direction that is parallel to the string bed plane and perpendicular to the longitudinal axis. When the racquet is tested under a racquet forward / rearward bending test, the racquet has a forward / rearward deflection with respect to the longitudinal axis of less than 7.3 mm when measured in a direction that is perpendicular to the string bed plane and perpendicular to the longitudinal axis.

The invention discloses a teenager scoliosis eight-section brocade guide massage system and a personalized training method, and relates to the technical field of medical rehabilitation. The system comprises a lateral bending parting evaluation module which measures a Cobb angle and a centrum rotation angle through a 3D spine scanner and detects a muscle tension difference through a surface myoelectricity collector; the eight-section brocade improved action library is used for storing asymmetric improved actions aiming at a right chest bend, a left waist bend and an S-shaped bend, the action angle of the concave side is increased by 5-30 degrees, and the action angle of the convex side is correspondingly reduced; the directional massage auxiliary unit is provided with a pressure silicon controlled rubber massage head, the convex side is released by adopting an 8-10 Newton rolling method, and the concave side is activated by adopting a 3-5 Newton point pressing method; and the intelligent motion correction module monitors spinal motion in real time through five inertial measurement units, and provides voice vibration feedback when the deviation exceeds a threshold value. The training method adopts a progressive scheme, is implemented in stages according to the size of a Cobb angle, and comprehensively intervenes through'massage release-guide correction-acupoint activation '.

The application provides a crash dummy, and relates to the technical field of crash dummies, and can improve the reliability of crash test data. A chest segment spine structure of the crash dummy comprises at least two first rigid thoracic vertebra pieces and at least two flexible thoracic vertebra pieces, the first rigid thoracic vertebra pieces and the flexible thoracic vertebra pieces are alternately arranged along the extension direction of the chest segment spine structure and sequentially connected in a head-to-tail mode, a rib piece is fixedly connected with the first rigid thoracic vertebra piece, the rib piece is arranged in one-to-one correspondence with the first rigid thoracic vertebra piece, and the at least two rib pieces are all slidably connected with a sternum piece along the extension direction of the chest segment spine structure. The compression and expansion of the flexible thoracic vertebra piece enable the chest segment spine structure to produce bending, stretching and lateral bending movements, the crash dummy can produce forward bending, backward bending and lateral turning responses, the injury condition of the crash dummy in a crash is consistent with the injury condition of a real human body, and the reliability of crash test data can be improved.

The invention discloses a foldable and portable sitting position corrector capable of continuously resisting scoliosis, and relates to the technical field of spine correction. The strength applied by various traditional braces or orthotics is fixed, the body is inconvenient and uncomfortable to move after being worn, and the life quality is influenced. Therefore, the sitting position corrector which is light in overall structure, foldable and portable, can be placed on a stool or a chair at home or at school, and can be used for correcting the sitting position when children attend the class and do homework after school is designed. Wherein the universal adjusting device changes the force application direction and can act on a sagittal plane and a coronal plane at the same time, the honeycomb soft cushion on one side is heightened to enable the pelvis to return, and the correction effect is achieved. A continuous force application device is additionally arranged, force of an existing brace or orthosis is fixed, a new thought is provided, force is transmitted through a spring, pressure borne by a lateral bending part is continuous and soft, and comfort is improved. Meanwhile, the patient can use the corrector to actively train the scoliosis depressed muscles to achieve the correction effect.

The utility model discloses a correction frame for preventing scoliosis of children, and relates to the technical field of spine correction frame design, the correction frame comprises an anti-scoliosis mounting frame, a correction adjustment fixing unit and an auxiliary fixing unit, the anti-scoliosis mounting frame is provided with three ventilation rectangular holes in an annular array; each ventilation rectangular hole penetrates through the front side and the rear side of the anti-lateral-bending mounting frame, the interior of each ventilation rectangular hole is fixedly connected with the first ventilation fabric in a clamped mode, auxiliary fixing units are arranged on the left side and the right side of the anti-lateral-bending mounting frame respectively, and the anti-lateral-bending mounting frame is in a triangular dart shape. The correction adjusting and fixing unit comprises a clamping fixing block, a scoliosis corrector, a connecting and fixing plate, an elastic fixing belt, a clamping screw hole and a connecting stud, when people with different heights use the device, the fixing device can be adjusted, wearing and using of the device are not affected, the device is worn firmly, and spine correction and using are not affected.

The utility model relates to a golf practice assist device, in particular to a golf swing trainer capable of making a sound. The wrist fixing band is used for being worn on the wrist, the standing wrist angle control board comprises a fixing part and a bending part, the fixing part is fixedly connected with the wrist fixing band, the bending part can restrain the standing wrist angle, and the fixing part and the bending part are of an integrally-formed structure; a sounding elastic piece is fixedly arranged on the inner side of the fixing part, and when the wrist bends upwards, the sounding elastic piece is forced to laterally bend the bending part and make a sound. The golf swing trainer is worn on the wrist through the wrist fixing band, when a user swings, the wrist bends upwards to force the sounding elastic piece to make a sound towards the lateral bending part, and the prompt of the sound can help the user to grasp the moment of standing the wrist during swing and grasp the direction of standing the wrist; and a user can be helped to grasp the swing delayed release time and grasp the wrist standing angle, so that the wrist action during swing is effectively corrected.

The present application relates to a kind of anterior cervical dynamic fixation plate, including first bone plate and second bone plate, first bone plate and second bone plate can be limit expansion and limit rotation and nested connection between, first bone plate corresponds the end of second bone plate and is equipped with connecting plate, both sides of connecting plate are respectively equipped with lug, second bone plate inside is equipped with the cavity of accommodating connecting plate, both sides of cavity are respectively equipped with limit sliding slot, connecting plate can limit rotation and be set in cavity inside and the lug can limit sliding and be covered in limit sliding slot, first bone plate and second bone plate are opened on the each cervical vertebra segment of corresponding patient anterior cervical fixed and have fixed hole.The present application can be based on guaranteeing cervical vertebra fixed segment stability, realize that cervical vertebra fixed segment has a certain range of expansion and lateral bending activity, while it can also avoid excessive activity, it is favorable to reduce postoperative complication, and it is favorable to the reservation of cervical vertebra motor function.

The invention discloses a spine minimally invasive intervertebral fusion cage and a rigid fixing device thereof, and relates to the technical field of medical implantable instruments, and the spine minimally invasive intervertebral fusion cage comprises a lumbar vertebra body and a vertebral plate nail. According to the spine minimally-invasive intervertebral fusion cage and the rigid fixing device thereof, the total length of the connecting rods is adjusted according to the specific spine curvature of a patient and the actual positions of the two vertebral plate nails, so that the optimal matching position is found and corresponds to the actual requirement, and the spine minimally-invasive intervertebral fusion cage and the rigid fixing device thereof are convenient to use. The stress concentration on a single component is reduced through a surface contact and multi-point multi-direction fixing mode; the rigid supporting frame is symmetrically distributed on the two sides and is not fixed to the middle of the spine, then a core nerve structure is avoided, the symmetrically-distributed rigid fixing devices and the spine jointly form a three-dimensional triangular supporting frame, then lateral bending and rotation are resisted, and therefore the stable supporting structure is constructed; and a good mechanical environment is created for spinal fusion.

The application discloses an anchoring hook, a valve stent and a valve prosthesis. The anchoring hook body comprises a straight rod segment, a bending segment and a free segment arranged in sequence from a root to a head. A slit has a starting point in the root area of the straight rod segment, and the slit extends from the starting point along the length direction of the anchoring hook body through the straight rod segment, the bending segment and at least a part of the free segment. The slit penetrates the anchoring hook body in the thickness direction of the anchoring hook body, and the width of the slit in the width direction of the anchoring hook body satisfies that the bending stiffness of the anchoring hook body changes within a predetermined threshold range compared with that before the slit is formed. The anchoring hook in the application is slit on the body, and the slit can enhance the torsional compliance of the whole anchoring hook without affecting the bending stiffness of the anchoring hook body. When subjected to multi-dimensional interaction force caused by continuous contraction of the heart or subjected to torsional force that makes the anchoring hook have a lateral bending or torsional tendency, the anchoring hook in the application has good fatigue performance.

The application discloses a modular flexible bionic hand based on a dual-mode wire driving, and belongs to the technical field of robots. The dexterous hand comprises a finger assembly, a palm base assembly, an independent driving module, a coupling driving module, an arm base assembly and a tendon; the inner cavity of the arm base assembly is provided with the coupling driving module for driving the opening and closing of the thumb, the index finger and the middle finger simultaneously, and the independent driving module for driving the independent bending of each finger and the lateral bending of the thumb. The bionic hand can be provided with 7 degrees of freedom, adopts a tendon driving mode; the finger assembly is composed of five modular flexible fingers; the knuckles adopt equidistant porous microstructures to improve the shape adaptability and impact resistance, realize the positive active bending and the lateral passive bending; the external driving makes the driving module away from the end effector, and is beneficial to improving the dynamic performance of the bionic hand. The application adopts modular assembly, has the advantages of reliable structure, convenient manufacturing, light weight, high efficiency and low cost.

The utility model discloses a spring lateral bending prevention device which comprises a discharging mechanism, a positioning mechanism and a compressing mechanism, the positioning mechanism comprises a positioning air cylinder, an upper V-shaped pressing block and a lower V-shaped pressing block, the upper V-shaped pressing block is fixedly connected with the telescopic end of the positioning air cylinder through a movable plate, and the lower V-shaped pressing block is arranged under the upper V-shaped pressing block; the side face of the lower V-shaped pressing block is open and provided with a discharging mechanism, and the spring is located in the lower V-shaped pressing block. A through opening is formed in one end of the lower V-shaped pressing block and communicates with the positioning mechanism and the compressing mechanism. By using the device, springs of various sizes can be adapted on the premise that a clamp is not replaced, the springs are clamped and fixed in the radial direction, and the springs can be prevented from being bent in the compression process.

The invention relates to an electric iron member tension test device, which relates to the related technical field of material tension test, and comprises a base, an extrusion seat, a positioning mechanism, a hanging piece, a detection mechanism, a sliding plate, a sliding seat, a trigger mechanism, a clamping mechanism, a dynamometer and a hydraulic jack, the problem that eccentricity of the U-shaped hanging ring after being placed is not considered in the placing process in the prior art can be solved, eccentric loading can cause single-side stress concentration of the hanging ring, actually-measured fracture load is possibly lower than a true value, product quality is misjudged, the hanging ring can be accompanied by additional bending moment during eccentric stress, non-axial deformation is caused, calculation of parameters such as elasticity modulus is interfered, and the product quality is influenced. The problems that metal fragments tend to be sprayed to the stress concentration side during asymmetric fracture, the personnel injury probability is increased, the axial direction of the high-quality U-shaped hanging ring is in a symmetrical deformation state under pure pulling force, and if abnormal lateral bending occurs, the situation of inclusions in materials or uneven heat treatment can be possibly indicated are solved.

The invention relates to the technical field of medical equipment, in particular to an auxiliary positioning device for spine surgery. Comprising a fixing frame and further comprises a first positioning mechanism arranged on the fixing frame, the first positioning mechanism comprises a longitudinal positioning frame slidably connected into the fixing frame and a transverse positioning frame slidably sleeved with the longitudinal positioning frame, and a second positioning mechanism is arranged in the transverse positioning frame; the second positioning mechanism comprises an annular frame rotationally connected into the transverse positioning frame, a rectangular rail is fixedly connected to the inner wall of the annular frame, a lantern ring staggered with the rectangular rail is arranged, and a guide pipe is fixedly connected into the lantern ring. By arranging the first positioning mechanism, spines with different lateral bending degrees can be more comprehensively dealt with, the position of the catheter can be conveniently and rapidly adjusted, and by arranging the second positioning mechanism, when the catheter is rotated, the position of the catheter can be automatically adjusted and compensated, so that the axis of the catheter always faces a positioning point of the skin of a patient; repeated measurement and positioning are not needed, and operation efficiency is improved.

The present application relates to the technical field of engineering machinery, and in particular to a control method, device, engineering machinery, and storage medium for super-lifting automatic tensioning. The method comprises: controlling a super-lifting device to perform super-lifting automatic tensioning; determining whether a first deflection occurs in a boom according to the head inclination angle, the root inclination angle, and the middle inclination angle; determining the overall lateral bending amount of the boom if the first deflection does not occur; performing lateral bending adjustment if the overall lateral bending amount is greater than a preset maximum lateral bending amount; determining the overall maximum deflection of the boom according to the head inclination angle and the root inclination angle if the overall lateral bending amount is less than or equal to the preset maximum lateral bending amount; performing deflection adjustment if the overall maximum deflection is greater than the preset maximum deflection; determining that super-lifting automatic tensioning is completed if the overall maximum deflection is less than or equal to the preset maximum deflection, thereby improving the efficiency of adjusting the lateral bending and deflection of the boom, improving the tensioning effect, making the tensioning more comprehensive, and enhancing the safety of the boom.

The utility model relates to a welding tool and a welding system for a T-shaped structure, the welding tool comprises a base, the T-shaped structure is inversely placed on the top surface of the base, and the top surface of the base is in contact with a transverse plate of the T-shaped structure; the fixing assembly comprises a plurality of limiting pieces and a plurality of clamping blocks, the limiting pieces are arranged on the base in a row, intervals are reserved between the limiting pieces and the top face of the base, a transverse plate on one side of the T-shaped structure is located in the intervals of the limiting pieces, and the clamping blocks are inserted into the intervals respectively; and the limiting parts are respectively propped between the limiting parts and the top surface of the transverse plate. Through the application, the acting force opposite to the lateral bending and longitudinal bending deformation direction can be formed to control the deformation.

The application discloses an active exoskeleton for correcting scoliosis, which comprises a fixing module worn on a trunk part, a bionic spine module for connecting adjacent fixing modules to realize forward and backward flexion, lateral bending and rotation movement following a human spine, and a power self-driven tensioning module arranged on the lower fixing module to drive a correction wire and act on the lateral part of the upper fixing module, the middle fixing module and the lower fixing module through a threading pipe group sleeved on the correction wire to realize the application of a correction force on the trunk. The application adopts a modular design, has compact structure and strong operation reliability, realizes the movement of the brace in each direction through the bionic spine module, and realizes the correction of the trunk scoliosis by adjusting the tension of the correction wire through the power self-driven tensioning module.

The invention relates to the technical field of artificial intervertebral discs, in particular to an artificial intervertebral disc with a springback function, which comprises an artificial intervertebral disc body, and the artificial intervertebral disc body is of an integrally formed structure or a split structure; the artificial intervertebral disc body comprises an upper fixing plate, a lower fixing plate and an elastic body arranged between the upper fixing plate and the lower fixing plate; the outer surfaces of the upper fixing plate and the lower fixing plate are respectively provided with micropores and biological coatings for bone ingrowth induced by hydroxyapatite, and the upper fixing plate and the lower fixing plate are respectively provided with a plurality of round holes and fixing teeth. The device is reasonable in structural design, can perform multiple fixation on the vertebral body, can perform good axial compression and rebound in the longitudinal axis direction of the human body spine, can perform flexion and extension, lateral bending, rotation and other motions, can reconstruct dynamic stability of an intervertebral long segment after intervertebral disc and vertebral body resection, is high in physiological activity matching degree with the normal human body spine, and has a good application prospect. Implantation is convenient, fixation is stable, rebound resilience is high, and elasticity is lasting.

The invention relates to the technical field of sports shoe detection, and discloses a sports shoe sole strength detection device which comprises a bottom box, four first supporting columns are fixedly connected to the top of the bottom box, and a fixing table is fixedly connected to the tops of the four first supporting columns. The natural bending process of the shoe sole when a person walks can be accurately simulated through upward turning of the first placing plates, basic detection of the bending performance of the shoe sole is achieved, the first placing plates on the two sides can be bent under the action of the first protruding blocks during bending, reverse lateral force is applied to the shoe sole, the shoe sole generates transverse twisting deformation, and the bending performance of the shoe sole is improved. Compared with a traditional single-direction bending detection mode, the device can more comprehensively and truly reflect the stress condition of the shoe sole in actual wearing, effectively avoids the problem of wearing discomfort or damage caused by insufficient lateral bending performance of the shoe sole, and improves the detection accuracy of the shoe sole. And a more reliable data support is provided for the bending performance evaluation of the sole.

Disclosed in the present invention is a valve delivery system, which comprises: a delivery assembly, wherein the delivery assembly comprises a sheathing canal assembly and a pipeline assembly which are sequentially arranged from outside to inside, the sheathing canal assembly comprises a first delivery pipe and a second delivery pipe which are sequentially arranged from outside to inside, a lateral bending adjusting pipe is arranged at a position of the first delivery pipe located at the distal end, an axial bending adjusting pipe is arranged at a position of the second delivery pipe located at the distal end, and the axial bending adjusting pipe is located at a position proximal to the side of the distal end of the lateral bending adjusting pipe relative to the lateral bending adjusting pipe; and a bending adjusting assembly, wherein the bending adjusting assembly comprises a lateral bending adjusting assembly and an axial bending adjusting assembly which are arranged on an operation handle, the lateral bending adjusting assembly is used for controlling the lateral bending adjusting pipe to bend towards both sides of a vertical plane where the pipeline assembly is located, and the axial bending adjusting assembly is used for controlling the axial bending adjusting pipe to bend in the vertical plane where the pipeline assembly is located. Both a bending adjusting function and a step-by-step release function are integrated on the delivery system, such that step-by-step release of a valve can be achieved while a three-way bending adjusting operation is achieved. Therefore, the use performance of the delivery system is expanded, and the operability of the system is further improved.

Devices and methods for treating penile conditions are disclosed. A penile treatment device can include a sleeve and a frame. The sleeve can be configured to receive a penis of the human body. The sleeve can be configured to radially contract around and grip the penis in response to axial tension. The frame can be configured to be disposed at least partly around the sleeve and extend along at least a portion of a length of the penis. The frame can include a first support, a second support, and an end cap. The second support can be pivotable relative to the first support to apply a transverse bending force to the penis. The end cap can be coupled to the second support and can be configured to secure the sleeve to the frame. The frame can be lengthened to axially tension the penis.

The utility model relates to a device capable of adjusting the height of a head, a neck and shoulders, which comprises a detector, a rack fixed near the detector, and a bed body erected on the rack in a front-back translation manner, the head part of the bed body is a platform-type adjustable table made of non-metal materials, and a plurality of layers of air bags are arranged on the upper side of the adjustable table; the flexible supporting pad is used for supporting the head, the neck and the shoulders, the air bag obliquely supports the supporting pad, the lowest end of the supporting pad is close to the shoulders, and the supporting face of the supporting pad is provided with a head supporting groove, a neck supporting groove, a shoulder supporting groove and two arm positioning grooves so as to position the head, the neck, the double shoulders and the double arms respectively. The head, neck and shoulder positions of a human body can be locked at relatively low cost, the requirements of head, neck and shoulder position fixing, lifting and height adjusting in examination or treatment of elderly patients with abnormal body positions (such as thoracic vertebra lateral bending and head and neck forward leaning fixing postures) are met, and artifacts and signal interference of the detector cannot be caused.

The invention discloses an anchoring hook, a valve stent and a valve prosthesis. The anchoring hook body comprises a straight rod section, a bent section and a free section which are sequentially arranged from the root to the head. The starting point of the open seam is located in the root area of the straight rod section, the open seam passes through the straight rod section and the bent section in the length direction of the anchoring hook body from the starting point and extends to at least one part of the free section, and the open seam penetrates through the anchoring hook body in the thickness direction of the anchoring hook body. The width of the slit in the width direction of the anchoring hook body meets the condition that the variation of the bending rigidity of the anchoring hook body is within a preset threshold value range compared with that before the slit is formed. According to the anchoring hook, slotting is conducted on the body of the anchoring hook, and the overall torsion compliance of the anchoring hook can be enhanced under the condition that the bending rigidity of the anchoring hook body is not affected through slotting. When the anchoring hook is subjected to multi-dimensional interaction force caused by continuous contraction of the heart or torsional force enabling the anchoring hook to have a lateral bending or torsional tendency, the anchoring hook has good fatigue performance.