24 results about "Cerebral angiography" patented technology

The invention discloses a blood volume detection device and method based on a brain angiography image, and relates to the technical field of blood volume detection of the brain angiography image, the blood volume detection device comprises a detection device body and a substrate, the top surface of the substrate is fixedly provided with a lifting platform, and the surface of the top end of the lifting platform is fixedly provided with a workbench; and the linear motor is installed in the middle of the top face of the workbench, and a movable bed plate is horizontally and fixedly installed on the movable end face of the top of the linear motor. According to the blood volume detection device and method based on the brain angiography image, displacement compensation closed-loop control is achieved through the fine adjustment feedback module of the adjusting mechanism, and the gear meshing clearance compensation error is reduced; the LSTM network and the hybrid FEM-LBM algorithm are cooperatively optimized, the blood flow calculation speed is multiplied, an isolation telescopic sleeve shell and a shielding plate are arranged to form a composite shielding layer, the radiation leakage amount is reduced, the radiation monitoring module achieves real-time alarm of dose exceeding, and the protection level is improved.

The invention relates to the technical field of image processing, in particular to a method for determining hemodynamic force for cerebral angiography x-ray examination, which comprises the following steps: acquiring the normal degree of each pixel point in a cerebral angiography image according to the difference between each pixel point in the cerebral angiography image and the corresponding pixel point in the adjacent cerebral angiography image; according to the pixel points around the pixel points, combining the normal degrees of the pixel points and the surrounding pixel points, and obtaining the edge features of the pixel points; further dividing each cerebral angiography image into a plurality of sub-images; and obtaining the possibility that each pixel point in the sub-image is a cerebrovascular edge pixel point according to the edge feature and the gradient value of each pixel point in the sub-image, and endowing each pixel point with a smoothing parameter for denoising. According to the method, by analyzing the relation between the pixel points, the filtering weight between the pixel points is distributed, loss of detail features is reduced, and therefore the accuracy of hemodynamic examination is improved.

The invention discloses a head fixing device for a cerebral angiography operation, and belongs to the technical field of medical instruments. Comprising an operating table, a fixing shell is installed on the operating table, a pit is formed in the fixing shell, a plurality of first liquid bag modules and a plurality of second liquid bag modules are fixedly connected to the pit of the fixing shell, and all the first liquid bag modules and all the second liquid bag modules are arranged in a staggered mode. The number of the second liquid bag modules is larger than that of the first liquid bag modules, and the first liquid bag modules and the second liquid bag modules support the head of a patient in a wrapping mode. The head of a patient is supported through the first liquid bag module, then the head of the patient is limited through the second liquid bag module which gradually deforms, the head of the patient is fixed in a bowl-shaped mode on the whole, the stability of the head of the patient is improved, and it is guaranteed that the operation process is conducted smoothly.

The utility model discloses a kind of cerebral angiography and treatment of radial artery approach combined catheter, belong to medical instrument technical field, the catheter includes outer sleeve and inner core pipe;The outer sleeve includes outer tube body, the inner core pipe is movably threaded in the lumen of outer sleeve, the inner core pipe includes connected proximal end tube body and distal end tube body, the distal end tube body is pre-shaped structure, the pre-shaped structure of the distal end tube body is formed by multiple arc transition sections connected head to tail, the multiple arc transition sections constitute hook shape and the head end of distal end tube body extends to the outside of hook, the length of the pre-shaped structure of the distal end tube body is 12.5-18.5cm.The utility model sets outer sleeve and inner core pipe as independent catheter, without nesting and unscrewing when operating, reduce blood vessel injury risk;Inner core pipe has stronger superselective ability, can be directly used for the superselective angiography of target blood vessel.

The invention belongs to the technical field of medical instruments, and particularly relates to an adjustable compression salt bag used after a whole cerebral angiography interventional operation. The salt bag comprises a salt bag body and an adjustable hook-and-loop fastener bandage, the outer layer of the salt bag body is made of medical high-density polyester cotton waterproof breathable fabric, a closed containing cavity is formed through edge sewing, the cavity is evenly filled with high-purity edible salt, and the two ends of the adjustable hook-and-loop fastener bandage are fixedly sewn to the edges of the two opposite sides of the salt bag body respectively. The device is simple in structure and convenient to operate, the compression strength can be accurately adjusted, continuous and stable compression hemostasis of a puncture part is achieved, the occurrence rate of postoperative complications is effectively reduced, meanwhile, good air permeability and fitness are achieved, the use comfort of a patient is improved, and the clinical postoperative nursing requirement is met.

The utility model discloses an auxiliary head supporting device, and relates to the technical field of head supporting. The pillow comprises an installation plate installed on a radiography bed, a pillow body is fixedly installed on the installation plate, a connecting rod is fixed to the side edge of the pillow body, a clamping frame is arranged at the other end of the connecting rod, fixing mechanisms used for fixing the head of a patient are arranged at the two ends of the clamping frame, and supporting plates are symmetrically fixed to the installation plate. A placing mechanism for placing the neck of a patient is arranged at the other end of the supporting plate. The pillow body and the connecting rod are fixedly mounted on the mounting plate, the clamping frame and the fixing mechanism are matched, the head of a patient can be effectively fixed, it is guaranteed that the head is kept at the stable position in the cerebral angiography process, and deviation of the head is avoided; by fixing the head of the patient, the situation of image blurring or ineffectiveness caused by head movement or fatigue can be reduced, and improvement of the examination quality and accuracy of cerebral angiography is facilitated.

The utility model discloses a head fixing seat for cerebral angiography, which comprises a pillow seat, at least one transverse fixing component and at least two longitudinal fixing components, the transverse fixing component comprises a transverse fixing belt, a transverse connecting buckle and a transverse adjusting piece, the transverse fixing belt is detachably inserted into the transverse connecting buckle, and the transverse connecting buckle is detachably inserted into the transverse adjusting piece. The transverse adjusting piece is used for loosening and tightening the transverse fixing belt and adjusting the connecting position in the transverse connecting buckle, namely adjusting the fixed length of the transverse fixing belt; the longitudinal fixing assembly comprises a longitudinal fixing belt, a longitudinal connecting buckle and a longitudinal adjusting piece, the longitudinal fixing belt is detachably inserted into the longitudinal connecting buckle, and the longitudinal adjusting piece is used for loosening and tightening the longitudinal fixing belt and adjusting the connecting position in the longitudinal connecting buckle. The head of a patient is transversely and longitudinally fixed to the pillow base through the transverse fixing assembly and the longitudinal fixing assembly respectively, comprehensive positioning is achieved, and the head is effectively prevented from shaking; the transverse adjusting piece and the longitudinal adjusting piece can properly adjust tightness according to the head size of a patient, and the application range is wide.

1. Name of the product in this design: Head Fixator. 2. Purpose of this design: To fix the head during cerebral angiography. 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 application discloses a cerebral angiography catheter device and belongs to the technical field of medical equipment. The cerebral angiography catheter device comprises a sheath pipe, a puncture needle connected with the sheath pipe, a liquid storage balloon arranged on the sheath pipe, a limiting pipe and an adjusting module. The limiting pipe is fixed on the sheath pipe. The adjusting module comprises a clamping block adjusting disc, a clamping assembly and a curved spring. The clamping block adjusting disc is arranged on the periphery of the sheath pipe. The adjusting module is used for adjusting the opening and closing state of the sheath pipe. Before puncture, the sheath pipe can be adjusted to a completely closed state by the adjusting module. After an operator holds the sheath pipe, pinches the liquid storage balloon and punctures, the sheath pipe is adjusted to a state with a certain opening degree after blood enters the balloon, so that a guide wire passes through. In this process, the sprayed blood enters the balloon and is prevented from being sprayed through the hole in the sheath pipe. Therefore, the guide wire insertion resistance can be adjusted, and the sprayed blood can be collected.

This invention discloses an artificial intelligence-based method for measuring aneurysms in cranial arterial angiography images, comprising the following steps: S1, acquiring keyframes of DSA images; S2, segmenting the keyframes using a deep neural network to distinguish between the background and blood vessels; S3, determining the aneurysm location region based on the segmentation results, obtaining the contour of the region, and simultaneously obtaining the length of the connection between the gray aneurysm region and the white blood vessel region, i.e., the aneurysm diameter width w; S4, based on the obtained aneurysm contour shape, calculating the aneurysm centroid O by spatial moments, drawing a perpendicular line through the centroid O and intersecting the contour boundary, traversing all angles, and taking the largest intersection line segment as the maximum diameter l of the aneurysm, drawing a perpendicular line from the aneurysm diameter width w and intersecting the contour boundary, the maximum height of which is the aneurysm height h. This invention achieves fully automated measurement of the diameter of cerebral vascular aneurysms through a deep neural network trained on a large amount of data, solving the problems of slow speed, poor accuracy, and large influence of subjective factors in manual measurement.

The invention relates to the technical field of medical instruments, and particularly discloses a head stabilizing device for cerebral angiography, which comprises a frame, a controller is mounted on the upper inner wall of the frame, a bottom support is fixedly mounted on the lower inner wall of the frame, side supports are arranged on two sides of the bottom support, a mounting cavity is formed in the position, close to the bottom, of the frame, and a side moving mechanism is arranged in the mounting cavity. The side moving mechanism is used for driving the two side supports to get close to each other so as to fix the two sides of the head, two top supports are symmetrically arranged on the upper side of the bottom support, a horizontal frame is arranged on the upper sides of the two top supports, an electric push rod is fixedly connected between the horizontal frame and the upper inner wall of the frame, and the lower side of each top support is covered with a silica gel pad; the contradiction that stability and comfort cannot be achieved at the same time in the prior art is solved, and the accuracy and safety of cerebral angiography are remarkably improved through the nested layout structure.

The utility model belongs to the technical field of medical instruments, and particularly relates to a transradial cerebral angiography postoperative operation limb cushion high pillow which comprises an operation limb cushion, a bottom cushion plate is arranged below the operation limb cushion, an adjusting cavity is formed between the operation limb cushion and the bottom cushion plate, an adjusting assembly is arranged on the outer side of the operation limb cushion, and the adjusting assembly is connected with the bottom cushion plate. The adjusting assembly comprises a connecting column, a connecting plate, an outer fixing plate and a clamping seat, the outer fixing plate is fixed to the outer side of the surgical limb pad, and a stud is arranged on the inner side of the outer fixing plate; the surgical limb cushion high pillow can be placed on a bed for use, the connecting column extends to the outer side of the bed and is fixed to the position of a bed board through the clamping block, so that the surgical limb cushion high pillow with the small design size is stably used, the position of the adjusting cavity is adjusted according to the outer fixing plate, the requirements of different patients can be met, and comfortable support is provided for the wrist; it is ensured that the operative limb is kept at the correct position, discomfort or complications caused by movement are avoided, pain and discomfort of a patient are reduced, and the recovery process is accelerated.

The application discloses a right radial artery type III aortic arch whole brain angiography catheter, which comprises an inner tube and an outer tube, wherein the inner tube comprises a first tube segment, a second tube segment, a third tube segment and a fourth tube segment, an included angle between the first tube segment and the second tube segment is 135-145 DEG and a first bend is formed to bend outward, an included angle between the second tube segment and the third tube segment is 40-55 DEG and a second bend is formed to bend inward, and an included angle between the third tube segment and the fourth tube segment is 130-140 DEG and a third bend is formed to bend outward; the outer tube is coaxially sleeved outside the inner tube, and the hardness of the outer tube is smaller than that of the inner tube, so that the outer tube can move along the inner tube. The angiography catheter does not need to be coiled in the aortic arch, can directly superselect the blood vessels on the arch, and reduces the coiling step of the Simmons catheter.

The invention relates to a modular lead vest carriage system which enables the carry of lead vests, which provide radiation protection for the user (healthcare personnel, physician, etc.) in cerebral angiography, without causing weight to the healthcare personnel and which can be used as a seat when desired.

The utility model discloses a lower limb braking protection device used after cerebral angiography. The lower limb braking protection device comprises a base. The device further comprises a thigh support and a shank support, the thigh support and the shank support are both provided with restraint straps, one end of the shank support is in sliding connection with the base through a transverse shaft, one end of the thigh support is rotationally connected with the base, and the other end of the thigh support is rotationally connected with the shank support to form a supporting structure capable of being folded and arched. The supporting structure is provided with a locking mechanism used for fixing the included angle between the thigh support and the shank support. The utility model has the advantages that the brake angle is adjustable, and the brake requirements after different angiography operations can be met.

The invention discloses a cerebral apoplexy risk assessment method and system, and the system comprises a preprocessing module which is used for uploading a brain cerebral angiography image of a user, and carrying out the preprocessing and storage of the image; the segmentation module is used for calling the stored brain cerebral angiography image of the user and segmenting the brain cerebral angiography image; the extraction module is used for receiving the segmented brain cerebrovascular angiography image of the user and extracting a cerebrovascular contour image; the analysis module is used for receiving the extracted cerebrovascular contour image, traversing the cerebrovascular contour image and analyzing the cerebrovascular contour mutation tendency; the refreshing module is used for triggering skipping and skipping to the operation stage of the preprocessing module for refreshing operation; and the evaluation module is used for evaluating whether the user has a cerebral apoplexy worsening risk or not. According to the cerebral apoplexy risk assessment method, the cerebral apoplexy contour variation tendency is digitally defined by carrying out filtering processing, graph segmentation and contour image operation on the image, the cerebral apoplexy risk is assessed based on the cerebral apoplexy contour variation tendency which is continuously output, and the cerebral apoplexy risk assessment precision is greatly improved.

The utility model discloses a cerebrovascular angiography catheter device which comprises a first catheter, a rotating mechanism connected with the first catheter, a second catheter with one end movably arranged in the rotating mechanism, a side tube arranged on one side of the second catheter, a self-locking mechanism connected to the lower end of the second catheter and a guide wire, and the guide wire penetrates through the first catheter, the second catheter and the self-locking mechanism. The first end of the first locking shell is connected with the second catheter, the second locking shell is connected with the second end of the first locking shell, the locking inner core is installed in the second locking shell, a plurality of elastic locking parts are arranged outside the locking inner core, and the guide wire is arranged in the elastic locking parts in a penetrating mode. The elastic locking part is close to the first end of the first locking shell, the locking inner core can be matched with the first locking shell to lock the guide wire, the guide wire is released and locked when the elastic locking part is far away from the first end, a contrast agent can be added without completely retreating from the guide wire, the supporting force of the first catheter is enhanced, and the situation that the catheter falls off is reduced; angiography can be conveniently and smoothly completed.

The present invention relates to the technical field of image processing, and particularly relates to a method for determining blood dynamics for cerebral angiography X-ray examination, including: obtaining the normality degree of each pixel point in the cerebral angiography image according to the difference between each pixel point in the cerebral angiography image and the corresponding pixel point in the adjacent cerebral angiography image; obtaining the edge feature of the pixel point according to the pixel points around the pixel point, combining the pixel point and the normality degree of the surrounding pixel points; further dividing each cerebral angiography image into several sub-images; obtaining the possibility that each pixel point in the sub-image is a cerebral blood vessel edge pixel point according to the edge feature and gradient value of each pixel point in the sub-image, and assigning a smoothing parameter to each pixel point for denoising. By analyzing the relationship between pixel points and allocating the filtering weights between pixel points, the present invention reduces the loss of detailed features, thereby improving the accuracy of blood dynamics examination.

The invention relates to the technical field of medical simulation training, in particular to a cerebral angiography simulation training device which comprises an intelligent system and a placement cabinet, a controller is fixedly connected to the inner bottom wall of the placement cabinet, VR glasses are placed in the placement cabinet, a training table is fixedly connected to the top of the placement cabinet, and a camera and a loudspeaker are fixedly connected to the inner top wall of the training table. The inner side wall of the training table is fixedly connected with a display screen; a simulated human body is placed on the inner bottom wall of the training table; a contrast agent and an angiographic catheter are further placed in the placement cabinet, and a training assembly is arranged at one end of the angiographic catheter; the intelligent system comprises a scene selection module, a VR construction module, a real-time monitoring module, an error correction module and an evaluation module. The simulated human body is divided into a plurality of simulated tissues, and the anatomical structure of the real human body is simulated, so that a simulated environment closer to the real human body can be constructed. By means of the design, simulation training is closer to actual operation, and the reality sense and immersion sense of training can be improved.

This invention relates to a cannula assembly for cerebrovascular intervention via the radial artery approach, comprising an outer cannula, an intermediate access catheter, and a guidewire. The outer cannula has a first curved section, a first straight section, a second curved section, a second straight section, a third curved section, a linear section, and an outer cannula connector. The second curved section bends distally, with the curvature of the distal section being greater than that of the proximal section. The second straight section is longer and has a greater inclination than the first straight section. The intermediate access catheter has a cephalic section, a cervical section, a linear section, and an intermediate access catheter connector. The outer cannula is more rigid than the intermediate access catheter. This invention improves the convenience and success rate of transradial cerebral vascular superselection, avoids vascular injury, and is applicable to either the left or right radial artery approach. It can be used for both cerebral angiography and interventional treatment of cerebrovascular diseases.

The invention provides a head fixing device for cerebral angiography in the neurology department and an angiography system, and the head fixing device comprises a mounting block which is used for being connected with a mounting groove in the top end of a bed body; the horizontal supporting plate is fixedly connected to the upper end of the mounting block, a first limiting block is fixedly arranged at the upper end of the horizontal supporting plate, a head limiting groove is formed in the front side of the first limiting block, and the rear end in the head limiting groove is used for making contact with the head top of the human body; the two limiting assemblies are symmetrically connected to the left side and the right side of the head limiting groove; the supporting pad is detachably connected to the lower end in the head limiting groove. The supporting pad can be made of different materials, different materials can be selected according to different seasons, and the supporting pad can be detached to be cleaned or replaced; the head is positioned in the front-back direction through the head limiting groove, the left side and the right side of the head of the human body are laterally limited through the two limiting assemblies, and left-right swinging of the head of the human body in the examination process is avoided; and the distance between the two second limiting blocks can be adjusted, so that the requirement for fixing the heads with different head widths is met.

The invention discloses a neurology cerebral angiography femoral artery auxiliary puncture device, and relates to the technical field of medical instruments, the neurology cerebral angiography femoral artery auxiliary puncture device comprises an upper leg support plate and a lower leg support plate which are both made of carbon fiber materials, a joint piece is connected between the upper leg support plate and the lower leg support plate, and a compression hemostasis unit is arranged on the upper portion of the upper leg support plate. The compression hemostasis unit comprises an adjusting bearing assembly and a hemostasis assembly, and the fixing assembly is arranged on the upper leg supporting plate and the lower leg supporting plate; a fixing plate in the bearing assembly can be adjusted in an adjusting hole in a lifting mode, in cooperation with fine adjustment of the position of a compression air bag through a retractable rod and a drawstring in the hemostasis assembly, the compression air bag can be accurately adjusted to the proper height and position and can be tightly attached to a puncture point according to the specific position of the femoral artery puncture point of a patient, and therefore the patient femoralis artery puncture point can be more accurately fixed. The problem that a pressurizing hemostasis component cannot be adaptively adjusted is effectively solved, and the applicability of the device and the accuracy of puncture and hemostasis operation are improved.

The invention discloses an intelligent head fixator for cerebral angiography. The intelligent head fixator comprises a headrest support of a U-shaped structure and two mounting assemblies. The installation assemblies are symmetrically arranged on the two sides of the headrest support. The mounting assembly is used for mounting the whole fixator at one end of a sickbed; at least two limiting assemblies are arranged on the outer portion of the headrest support, the limiting assemblies horizontally slide on the outer portion of the headrest support, the limiting assemblies do overturning movement at a specified angle in the sliding process, the limiting assemblies rotate from the horizontal state to the vertical state through overturning, and the limiting assemblies move to the specified position while horizontally sliding. Therefore, the head of the patient can be conveniently fastened subsequently; according to the head limiting device, a traditional manual operation mode is abandoned, an automatic operation technology is adopted to achieve rapid limiting of the head of a patient, the operation convenience is greatly improved through the improvement, the time for fixing and detaching the head is remarkably shortened, and the working intensity of medical workers is effectively relieved.