15 results about "Left vertebral artery" patented technology

The invention discloses a vertebral artery dissection risk assessment method and system, and relates to the technical field of risk assessment, and the method comprises the steps: collecting ultrasonic dynamic blood parameter data of a vertebral artery of a patient; based on the ultrasonic dynamic blood parameter data, constructing a local blood flow kinetic energy disturbance time sequence diagram by adopting a hemodynamics time sequence analysis method, and performing time sequence prediction to generate a blood flow function disturbance prediction result; dynamically adjusting a risk score threshold by adopting a reinforcement learning algorithm, combining the adjusted risk score threshold with a blood flow function disturbance prediction result, and generating a personalized vertebral artery dissection risk score according to a risk score calculation model; and generating a vertebral artery dissection risk assessment result by using a multi-modal fusion mechanism in combination with the personalized vertebral artery dissection risk score and the multi-source heterogeneous medical feature set. According to the method, the patient static characteristics and the future disturbance trend serve as input, the optimal risk score threshold value is dynamically selected, and the personalized score is generated according to the disturbance threshold exceeding proportion and time weight information.

The present application relates to the field of model construction, in particular to a kind of construction method of vertebral artery compression rat model, the inner diameter and blood flow velocity of normal rat vertebral artery are obtained by ultrasonic detection;Anesthetize rat, skin preparation, disinfection, incision, expose vertebral artery;According to the required compression degree, select the tissue clip of corresponding specification, fix on vertebral artery, keep vertebral artery in compression state;Suture incision, disinfection, bandage;After rat awakens, daily care, feed, until incision healing;Ultrasonic detection is carried out, the inner diameter and blood flow velocity of the vertebral artery of rat model are obtained, compared with the inner diameter and blood flow velocity of the vertebral artery of the same age healthy rat or rat before modeling, whether it meets the standard of successful modeling is judged.

The invention discloses an intracranial posterior circulation vascular stenosis functional evaluation method and system, electronic equipment and a computer readable storage medium, and provides a vascular stenosis functional evaluation method based on bilateral blood flow conditions by fully considering the combined action of intracranial bilateral vertebral arteries on blood flow supply. The problem that in the prior art, only one side vertebral artery is considered to conduct vascular stenosis function evaluation, and the accuracy is low is solved, if only one side of the vertebral artery on the two sides of a patient has lesion, the compensation function of the opposite side healthy vertebral artery is neglected in the prior art, the influence of lesion on vascular function can be overestimated, and the vascular stenosis function evaluation accuracy is improved. According to the method, the bilateral vertebral arteries are coupled through the pressure drop constraint condition, and the intracranial posterior circulation vascular stenosis functional evaluation is comprehensively performed in combination with the condition of the basilar artery, so that the method is more accurate, and the output evaluation dimension is wider.

The present invention provides a head and neck CTA blood vessel extraction method, comprising the following steps: acquiring a head and neck CT image and a head and neck CTA image, aligning the head and neck CT image and the head and neck CTA image to obtain a first mask image of the blood vessel; extracting feature points in the first mask image of the blood vessel and classifying them through a deep learning model to obtain arterial point information; cropping the first mask image of the blood vessel to obtain a second mask image of the neck area; extracting the carotid artery and vertebral artery from the second mask image based on the arterial point information; and extending the carotid artery and the vertebral artery upward and downward, respectively, to achieve the extraction of four arteries. The present invention combines traditional algorithms with deep learning algorithms, and uses the arterial information obtained by the model to perform artery priority processing, which greatly reduces the influence of residue and venous reflux, obtains accurate centerline paths of the internal carotid artery and vertebral artery, reduces manual correction intervention, and increases clinical convenience and accuracy.

The invention provides a vertebral artery stent, which relates to the technical field of medical instruments, and comprises a stent main body used for being placed in a vertebral artery; the stent flaring is arranged at one end of the stent main body and is suitable for being attached to a vertebral artery opening in a self-expanding manner; the self-expandable stent flaring is arranged, the stent flaring can be matched with the vertebral artery opening blood vessel shape and attached to the vertebral artery opening, a doctor does not need to excessively expand through a balloon and other structures, the stent service life is prolonged, the problems that the stent opening position is excessively extruded and plaques fall off are solved, and the operation efficiency is improved; meanwhile, the good wall attaching effect of the stent flaring and the vertebral artery opening is guaranteed.

The invention belongs to the technical field of traditional Chinese medicines, and particularly relates to a traditional Chinese medicine composition for treating cervical spondylosis and application thereof. The traditional Chinese medicine composition is prepared from the following raw materials in parts by weight: 12-18 parts of astragalus membranaceus, 7-11 parts of radix achyranthis bidentatae, 7-11 parts of ramulus mori, 7-11 parts of pawpaw, 6-13 parts of liquorice and 7-11 parts of lycopodium clavatum. According to the compatibility theory of monarch, minister, assistant and guide and drug pairs in traditional Chinese medicine, the basic principle of syndrome differentiation and treatment is followed, the composition is reasonable, the six traditional Chinese medicines are selected, and all the medicines are combined and have a synergistic effect, so that the traditional Chinese medicine has the effects of tonifying kidney and lifting yang, promoting qi to activate blood, dispelling wind and removing obstruction in the meridians and tonifying spleen and soothing the nerves; the traditional Chinese medicine composition has an exact curative effect on cervical vertigo and vertebral artery type and sympathetic nerve type cervical spondylosis caused by kidney deficiency and yang weakness, spleen deficiency and dampness obstruction and meridian obstruction.

The invention provides a vertebral artery stent. The vertebral artery stent is characterized by comprising a stent body, a blocking balloon assembly and a supporting balloon assembly; wherein the plugging balloon assembly comprises a plugging balloon and a plugging catheter which are connected with each other; a balloon body of the plugging balloon is arranged at the front end of the stent body, and the plugging catheter penetrates through the whole stent body and extends out of the rear end of the stent body; the supporting balloon assembly comprises a supporting balloon and a supporting catheter which are connected with each other; a balloon body of the supporting balloon is arranged in the stent body, and the supporting catheter extends out of the rear end of the stent body. The stent can effectively solve the problem of plaque flow guide in the stent implantation process.

Improved systems including rBGCs improved by means of stiffness; working zones and optimized transition zones can traverse the aortic arch into the common carotid and vertebral arteries from a radial approach including navigation of tortuous and individuated anatomical challenges. Mechanical Thrombectomy improved by balloon occlusion prevents thrombus showers and follows 10 years of interventional cardiology and diagnostic use of improved radial approach (TRA) with better systems, making trans-femoral (TFA)less safe and effective than this revised treatment paradigm, unexpectedly better than literature predicted in early parts of the decade. Likewise, carotid stenting may be performed during these intracranial arterial occlusion procedures without swapping out guide catheters as required by the prior art.

The invention provides a sectional type vertebral artery stent and a conveying system thereof, and belongs to the technical field of vascular intervention medical instruments. The sectional type vertebral artery stent comprises a stent body, and the stent body is provided with a supporting section and an anchoring section which are integrally connected; the supporting section is used for supporting a target position of a vertebral artery; the anchoring section is arranged at one end of the supporting section, the anchoring section is provided with a first branch and a second branch, the first branch and the second branch are arranged in the circumferential direction of the supporting section at intervals, a preset first included angle is formed between the first branch and the supporting section, and a preset second included angle is formed between the second branch and the supporting section; during working, after the stent body is released and expanded, the first branch and the supporting section form a preset first included angle, and the second branch and the supporting section form a preset second included angle which is used for being matched with an anatomical oblique angle of a target position. The technical problems that in the prior art, after being implanted, a single-section stent is prone to displacement, disturbs blood flow, is prone to forming thrombus and cannot be matched with the anatomical oblique angle at the bifurcation position are mainly solved.

The invention relates to the technical field of medical instruments, and particularly discloses a passage catheter special for releasing a vertebral artery stent through a radial artery admission passage, the passage catheter comprises a catheter, the catheter comprises an adjusting catheter and a body catheter, the adjusting catheter and the body catheter are coaxially connected, the body catheter comprises a near-end catheter and a far-end catheter, and the near-end catheter and the far-end catheter are coaxially connected. The near-end catheter comprises a first-stage coating, a first-stage outer tube, an annular cavity channel and a first-stage inner tube, a design scheme for adjusting the bending angle of the far-end catheter is adopted, the bending angle of the far-end catheter can be flexibly adjusted, the near-end catheter can adapt to complex blood vessels, the surgical operation difficulty is reduced, and the surgical efficiency is improved; the catheter comprises the soft head end, and when the head end makes contact with the inner wall of the blood vessel, damage to the blood vessel can be reduced; the catheter has two blood vessel entering modes, namely, the same-side blood vessel entering mode and the different-side blood vessel entering mode, the application mode of the catheter can be widened, and the instrument using cost of a patient is reduced.

The present invention relates to a staged balloon-expandable vertebral artery stent system and method with precise positioning, belonging to the technical field of balloon stent positioning in vertebral artery surgery. The present invention is provided with a special-shaped balloon. On the one hand, through the differential design of the size structures of the proximal balloon and the distal balloon, physical limit and positioning are achieved. It can not only ensure that the position of the special-shaped balloon can accurately reach the designated position at the connection of the stenosis site and the subclavian artery and perform automatic calibration when inserted, but also effectively avoid the influence of the amplitude of the special-shaped balloon and the stent when the catheter is withdrawn. On the other hand, by controlling the speed and magnitude of the advancing air pressure, the sequential deformation processes of the proximal balloon and the distal balloon are realized to ensure the fixation of the stent after sufficient positioning. In addition, the present invention is also provided with a radiopaque marker to assist in positioning, improving the precision of balloon stent positioning during surgery, avoiding the amplitude phenomenon of catheter withdrawal, and the negative impacts brought by damaging or cutting plaques, and having high promotion value.

The invention discloses a vertebral artery stent and a stent conveying system.The vertebral artery stent comprises a net-tube-shaped stent formed by weaving first weaving wires and second weaving wires according to the quantity ratio of 0.25-4: 1, and the degradation speed of the first weaving wires is larger than that of the second weaving wires; therefore, the mesh size of the mesh tubular stent can be increased along with the degradation of the first weaving wires. While the radial supporting force is ensured, the requirement that the stent is not broken during torsion is met, and meanwhile, the potential safety hazard of a patient caused by thrombus of a metal material can be effectively reduced.

The invention discloses a balloon catheter special for carotid artery and vertebral artery opening stenosis OCT imaging and stent therapy, which comprises a balloon catheter body, the balloon catheter body is of a tubular structure with openings at two ends, a guide cavity is arranged in the middle of the balloon catheter body, the right end is a head end, the left end is a tail end, a balloon body is sleeved on the peripheral surface of the balloon catheter body close to the head end, and a balloon mark is arranged at the balloon body. A bypass hole is formed in the left side of the balloon body, and a bypass hole mark is arranged at the bypass hole; the Y valve tee joint comprises a guide cavity connector and a balloon filling connector, and the right end of the guide cavity connector is communicated with the left end of the balloon catheter body in a sealed mode. The balloon filling catheter is of a tubular structure with openings in the two ends, the balloon filling catheter is arranged on the lower portion in the balloon cavity, and the left end and the right end of the balloon filling catheter are communicated with the balloon filling catheter connector and the balloon body respectively. Branch blood flow is blocked through balloon filling, and the target blood vessel flushing quality is improved; in addition, the bypass hole can simplify the surgical operation process.

The utility model relates to a pillow. The pillow comprises a neck pillow part and a fixing part. The neck pillow part extends in the first direction and is used for fixing the neck. The fixing part extends in a second direction different from the first direction and is connected with the neck pillow part. The number of the fixing parts is two. The two fixing parts are distributed in the first direction so that a head fixing space of the pillow can be formed between the two fixing parts. According to the pillow, the neck of a patient is allowed to make contact with the neck pillow part, the head is contained in the head fixing space, and the shoulders can abut against the side, away from the fixing part, of the neck pillow part. By means of the arrangement, the head of a patient is fixed through the fixing parts on the two sides, and the problem that a tracheal catheter and a venous catheter slip off due to shaking of the head of the patient in the first direction in the operation process is solved. Meanwhile, the neck pillow part can provide support for the neck of the patient, the situation that spinal nerve roots are pressed and neck muscles and ligaments are too nervous due to the hyperextension body position of the neck is avoided, and then the situation that blood backflow under the neck and vertebral artery blood flow are affected is avoided.

There is disclosed a porous emboli deflector for preventing cerebral emboli while maintaining cerebral blood flow during an endovascular or open surgical procedure. The device prevents the entrance of emboli of a size able to cause stroke (such as greater than 100 microns) from entering either the right or left common carotid arteries, and / or the right or left vertebral arteries by deflecting emboli downstream of these vessels. The device can be placed prior to any manipulation of the heart or aorta allowing maximal protection of the brain during the index procedure. The deflector has a low profile within the aorta which allows sheaths, catheters, or wires used in the index procedure to pass. Also disclosed are methods for insertion and removal of the deflector.