16 results about "Arterial dissection" patented technology

The application discloses a kind of false cavity plugging device, assembly and system, belong to medical instrument technical field, wherein false cavity plugging device includes elastic membrane and elastic support, elastic support includes warp beam and weft beam, warp beam is continuously bent wave shape, warp beam is equipped with weft beam, and weft beam can be bent into annular ring.Assembly includes release device and false cavity plugging device.System includes conveying device and false cavity plugging assembly, and conveying device includes sheath and guide wire, and sheath is equipped with guide wire passage and conveying passage.Weft beam bends into annular ring can make elastic membrane roll up, reduce the size in width direction, to be contained in sheath, after being separated from sheath, weft beam will be re-opened and contacted with the inner wall of artery dissection, and can be implanted, in the whole process of being received and being separated from sheath, elastic membrane does not have length direction change, and preset release position and actual release position can be kept consistent, reduce the operation requirement to operator, and it is beneficial to popularization and use.

The application discloses an aortic dissection risk reverse evaluation method and system, relates to the technical field of cardiovascular disease risk evaluation, and discloses an aortic dissection risk reverse evaluation method and system, which calculates a contradiction coefficient of blood vessel stability and behavior load by integrating medical image data and daily behavior dynamic data, generates early warning information based on the difference, effectively solves the technical problems that a traditional evaluation method cannot dynamically capture mechanical changes of a blood vessel wall and identify potential risk conflicts, can dynamically monitor the contradictory relationship between the geometric stability of a blood vessel and daily behavior load in real time, generates high-risk early warning information in time, avoids the early warning loss caused by too long an examination interval in the traditional evaluation method, and improves the accuracy and timeliness of risk evaluation.

This invention provides an information processing device, an information processing method, and an information processing program that can support the diagnosis of arterial dissection. [Solution] The information processing device 10 includes a processor, which acquires an input image including blood vessels, generates path information indicating the blood flow path based on the input image, identifies at least the starting position of the arterial dissection based on the path information, and determines the true lumen and false lumen of the arterial dissection based on the path information within a range set according to the starting position.

The invention discloses an aortic dissection risk reverse assessment method and system, relates to the technical field of cardiovascular disease risk assessment, and discloses the aortic dissection risk reverse assessment method and system, which calculates a contradictory coefficient between vascular stability and behavior load by integrating medical image data and daily behavior dynamic data. The technical problem that a traditional evaluation method cannot dynamically capture mechanical changes of the blood vessel wall and cannot recognize potential risk conflicts is effectively solved, the contradictory relation between the geometric stability of the blood vessel and daily behavior loads can be dynamically monitored in real time, high-risk early warning information is generated in time, and the safety of the blood vessel is improved. The early warning deficiency caused by too long check interval in a traditional assessment method is avoided, and the accuracy and timeliness of risk assessment are improved.

The invention relates to an aortic dissection embolism system based on a shape memory polymer, and the system comprises an embolism part which is made of shape memory polymer foam and has a compressed loading state and a preset state after expansion, and the embolism part is provided with a through central cavity and an edge cavity surrounding the periphery of the central cavity; an interventional catheter for accommodating the embolic member in a loaded state to perform interventional delivery; the delivery shaft is arranged in the intervention catheter in a sliding mode and used for carrying the embolism part to be released from the far end side of the intervention catheter to the aortic dissection, the embolism part in the loading state is integrally wound around the periphery of the delivery shaft, or the delivery shaft is arranged in the central cavity in a penetrating mode. Through the structural improvement of the embolism parts and the control of the expansion starting time, the released and expanded embolism parts are arranged in order, the space filling rate is high, and the surgical treatment effect can be further improved.

The invention relates to the technical field of medical instruments, and discloses a form-adaptive aortic dissection false cavity or aneurysm cavity thrombosis promoting embolism device which comprises a double-layer metal grid spindle-shaped skeleton of a hollow structure. Comprising a connecting point at the upper end and the lower end and an arc-shaped side face connected between the two points. The isolating membrane is located between the double-layer metal grid fusiform skeletons, and the double-layer metal grid fusiform skeletons are small in size after being compressed, can be quickly released and automatically adapt to the shape of an aortic dissection false cavity or an aneurysm cavity, so that the aneurysm cavity or the false cavity is fully blocked, and thrombosis of the aneurysm cavity or the false cavity is promoted. The device is simple in structure, convenient to operate, capable of adapting to the shape of an interlayer false cavity to be fully filled, good in blood flow isolation effect, capable of rapidly promoting thrombosis and remodeling of the false cavity, free of reverse compression of a true cavity and capable of being applied to occasions where embolism needs to be conducted on abdominal aortic aneurysm cavities and other branch arteries.

The invention discloses an application of valerian triester in preparation of products for preventing and treating aortic dissection, which can reduce the occurrence rate of aortic events, relieve the reduction of survival rate caused by aortic dissection, inhibit aortic dilatation caused by aortic dissection, reduce the number of elastic fiber fractures caused by aortic dissection and improve the survival rate of aortic dissection. The hematoma and the false cavity between aortic walls caused by the aortic dissection are improved, and the structural damage of the aortic walls caused by the aortic dissection is improved. According to the technical scheme provided by the invention, a brand new compound option is provided for the drug treatment of the aortic dissection.

The application discloses a training method of an aortic dissection stress field prediction model and related products. First, a plurality of CT images of aortic dissection patients are obtained, and cross sections of the maximum diameter of the dissection are identified to obtain a plurality of target cross sections. Based on the cross sections, initial samples and corresponding geometric mechanics information thereof are constructed, and augmented samples and geometric mechanics information thereof are generated. Then, the initial samples and the augmented samples are determined as training samples, and a three-value label set is constructed for each training sample. Subsequently, the initial stress field of the training sample is physically boundary cleaned according to the three-value label set to obtain a target stress field. Finally, the training sample and a regular coordinate set thereof are taken as input, the target stress field is taken as a label, and a Fourier operator network is trained to generate a prediction model. The application can construct a stress field prediction model with strong generalization ability and high stability under small sample conditions, and realize rapid and accurate mechanical evaluation of individualized anatomical structures of different patients.

The present application relates to the technical field of postoperative risk grading identification, in particular to a system for grading the adverse risk of distal remodeling after aortic dissection surgery. The system first determines a thrombus permeation resistance coefficient according to the gray level difference of CT images of the patient at different times, and extracts the thrombus isolation thickness; based on the thrombus permeation resistance coefficient, solves the anisotropic potential function equation to determine the cumulative leakage cost; performs structure tensor analysis on the gradient in the cumulative loss field formed by the cumulative leakage cost to determine the jet channel consistency factor; combines the cumulative leakage cost, the jet channel consistency factor and the thrombus isolation thickness to calculate the fluid impact load borne by the outer wall of the blood vessel; and based on the fluid impact load and the jet channel consistency factor, determines the risk level of different connected domains in the CT image. The present application improves the accuracy of jet impact risk identification.

The invention discloses application of OSBP2 overexpression lentivirus in preparation of drugs for preventing / treating aortic dissection, the OSBP2 overexpression lentivirus is prepared, vascular smooth muscle cells are infected by the lentivirus, the protein expression level of OSBP2 can be effectively up-regulated, occurrence of aortic dissection is inhibited, and the OSBP2 overexpression lentivirus has potential clinical application value in prevention and treatment of aortic dissection.

The invention provides application of astaxanthin in preparation of drugs for preventing and treating aortic dissection, and discovers that the astaxanthin can obviously reduce the death rate of mice with aortic dissection, improve the survival rate of the mice and reduce the aortic arch dilation degree and the blood vessel inner diameter; the occurrence of the aortic dissection and the cavity and fracture of the aortic middle layer structure are inhibited, and a novel potential prevention and treatment medicine is provided for the aortic dissection.

This invention belongs to, but is not limited to, the field of medical device technology, and particularly relates to a clamping forceps for clamping different tissues in complex aortic dissections. It comprises a handle assembly, a transmission assembly, and a jaw assembly, with each component connected in a modular, detachable manner. The handle assembly serves as the power input and control terminal, with its internal control module and power output fixedly connected to one end of the transmission assembly to transmit power and clamping force adjustment signals. The other end of the transmission assembly is detachably and fixedly connected to the jaw assembly, accurately transmitting the power and adjustment signals input from the handle assembly to each clamping unit of the jaw assembly. The jaw assembly serves as the clamping execution terminal, with each clamping unit correspondingly connected to a micro-drive mechanism of the transmission assembly, forming an integrated connection architecture of handle control, transmission, and jaw execution.

A system for treating aortic dissection including an aortic dissection implant comprising an expandable anchoring structure and an elongate tubular structure. The expandable anchoring structure can be configured to apply radial force to the sinuses of the aortic root and / or the sinotubular junction when expanded. The elongate tubular structure can comprise an expandable support frame and one or more layers. The expandable support frame can be configured to extend from the descending aorta to the ascending aorta and curve along with a curvature of the aortic arch when expanded within the aorta. The one or more layers can comprise a first porous layer comprising an atraumatic outer surface positioned over the expandable support frame and a second non-porous layer positioned over a portion of the first porous layer. The second non-porous layer may be configured to be positioned on opposite sides of the aortic dissection and to be inflatable via blood flow to seal against the dissection.

The application discloses an aortic dissection membrane extraction method, device and equipment. After a target slice image in a CTA image is acquired, an aortic blood vessel region in the target slice image is recognized. Eigenvalues of a two-dimensional Hessian matrix of each pixel point in the aortic blood vessel region are analyzed, and an intima region is extracted. Pixel points of the intima region are set as a first pixel value, and pixel points of other regions are set as 0, so that a first binary image is generated. The first binary image is eroded, the pixel value of the pixel points in the region near the aortic membrane in the first binary image is removed by erosion, and a second binary image is generated. Pixel points with the first pixel value in the second binary image are clustered into two categories, and a connected region with an area greater than a first threshold in the cluster is determined as an aortic dissection membrane region, so that the aortic dissection membrane region can be correctly extracted for one or two aortic dissection membrane regions in the aortic region. The aortic dissection membrane region in the CTA image is accurately extracted.

An information processing device including a processor configured to: acquire an input image including a blood vessel; generate course information indicating a blood flow course based on the input image; specify at least a start position of an arterial dissection based on the course information; and discriminate between a true lumen and a false lumen of the arterial dissection based on the course information in a range set in accordance with the start position.

The invention provides application of amomum tsao-ko essential oil in preparation of medicines for preventing and treating aortic dissection, and finds that the amomum tsao-ko essential oil can obviously reduce the death rate of mice with aortic dissection, improve the survival rate of the mice and reduce the aortic arch dilation degree and the blood vessel inner diameter; the occurrence of the aortic dissection and the cavity and rupture of the aortic middle-layer structure are inhibited, and a novel potential therapeutic drug is provided for the treatment of the aortic dissection.