41 results about "Artery dissection" patented technology

The invention discloses a covered stent for an aortic dissection surgery, a delivery device and a use method thereof. The stent comprises a main body, wherein the main body decreases progressively from the heart near end with a large diameter to a far end with a small diameter, and the superior border of the middle piece of the main body is a rotary island; a tectorial membrane is arranged except the rotary island, and the two ends of the main body and the rotary island are provided with positioning marks. The delivery device comprises a delivery sheathing canal, a suture and a traction guide wire, wherein the suture is sewn on the outer side surface of the covered stent, and the two side edges of the covered stent at the near end of the left subclavian artery are sewn up by the suture; the stent is closed up to be in a semi-contraction state by the traction guide wire through the suture, and the covered stent is closed up and wrapped in the delivery sheathing canal; the delivery sheathing canal is provided with a steeple, and the far end of the traction guide wire penetrates through the handle of the delivery sheathing canal and is fixed. The covered stent for the aortic dissection surgery is used for a dissecting aneurysm surgery of the lesser curvature side of aortic arch and an interventional minimally invasive surgery of an aortic dissection near the brachiocephalic trunk, so that the trauma of a thoracotomy is avoided, and the athe lumen crevasse occlusion is directly implemented.

A bloodstream dilating device 1 is composed of an elastic member 2 extending in a direction of blood flow in a true lumen 115. The elastic member 2 pushes the inner wall of the true lumen 15 outward to dilate the bloodstream. An aortic dissection treating device includes an obturator and a fixing member for fixing the obturator to the inner layer of an aorta. The obturator is inserted up to the point that it can cover an entry port formed in the aorta. The obturator is deformed along the periphery of the entry port in the inner layer by blood pressure to occlude the entry port.

Medical methods and devices for treating aortic dissections. A catheter-based cutting device permits cutting a septum of acute or chronic aortic dissections, in a retrograde manner. The catheter includes a base section having a central lumen therethrough, two flexible arms extending from a distal end thereof, where each arm has a channel therethrough for a passage of a guide wire. With distal ends of the two flexible arms separated, the two arms form a Y-shape with the base section. With distal ends of the two flexible arms together, the two arms have a longitudinal profile, about a periphery thereof, identical to a longitudinal profile of the base section. A non-mechanically actuated cutting component resides between the two arms in a vicinity of the distal end of the base section. The cutting component faces distally outward between the two arms with the distal ends of the two flexible arms separated.

The invention discloses an aortic dissection surgery risk prediction method based on a lifting tree model. The method comprises the steps of 1, carrying out data preprocessing; complementing data loss parts in the operation records to form a database containing the operation records; step 2, carrying out data mining; processing the data in the database based on the decision tree model; 3, analyzing a result; analyzing a data mining processing result to evaluate the validity of a data mining algorithm; and 4, carrying out knowledge application; and applying the model to data corresponding to the current aortic dissection surgical operation to predict the risk of the current operation. The model has 100% accuracy rate for predicting the death risk after the aortic dissection surgery, compared with other prediction methods, the accuracy is higher, the prediction result can give key factors of death after the aortic dissection surgery, decision basis can be provided for doctors and patients in the future, and a medical policy maker can fully utilize and arrange medical resources.

The invention relates to a method for predicting ICU duration after aortic dissection cardiac surgery. The method comprises the following steps: acquiring ICU data from an ICU database after aortic dissection cardiac surgery, and preprocessing the data; on the basis of a kendall correlation coefficient, carrying out feature extraction on the preprocessed ICU data, and taking features with the correlation coefficient value higher than a preset threshold value; constructing a machine learning model, and training the constructed machine learning model based on the extracted ICU data features; after training is completed, predicting the ICU duration of the patient through real-time ICU data after the aortic dissection cardiac surgery. Through the method, the ICU duration of the patient after the arterial dissection cardiac surgery can be predicted, the mastery degree of the patient and family members on the illness state and the recovery process is improved; meanwhile, a powerful support can be provided for medical personnel to prepare a medical plan.

The invention belongs to the field of medical instruments and relates to a device for being implanted in the abnormal bulging position of an arterial canal wall. The device comprises a bag capable of being implanted in the abnormal bulging position of the arterial canal wall and bulging, when the bag bulges, the bag has 3D modeling anatomy three-dimensional morphological features conforming to the implanting position, and therefore blood cannot flow into the abnormal bulging position of the arterial canal wall from an arterial canal. According to the device, the blood cannot flow into the abnormal bulging position of the arterial canal wall from the arterial canal, blood flow smoothness in the tumor-carrying arterial canal is kept, blood flow smoothness of branch blood vessels of the arterial canal is kept, thus, the device can be used for treating the diseases such as intracranial aneurysms, visceral aneurysms, false aneurysms, aortic aneurysms, artery dissection and aortic dissection, and a new way for aortic disease interventional therapy is expected to be opened up.

The invention discloses a method for constructing an aortic dissection model by using a biological material, which comprises the following steps of: 1, acquiring an aorta of an in-vitro mammal, and reserving a branch artery with a proper length on the aorta; 2, folding the aorta inwards and outwards to expose the aorta intima to the outer side; 3, selecting the position of a first dissection gap, cutting the aorta intima to form the first dissection gap with set depth and width, and separating the aorta intima at the first dissection gap from the aorta adventitia; 4, inserting a long sheet-shaped first punching tool into the first dissection gap, and punching towards the far end of the aorta, so as to separate the aorta intima and the aorta mesolamella on the punching path and manufacture an aorta dissection with set length and width; and 5, folding the aorta inwards and outwards again to expose the aorta adventitia to the outer side, thus completing aorta dissection construction. An aortic dissection model based on a biological material can be prepared through the method.

A system for treating aortic dissection includes a sinotubular junction magnetic array having a first plurality of magnetic elements, a counter-magnetic array having a second plurality of magnetic elements, and an ascending aortic stent graft comprising a third plurality of magnetic elements. A method for treating aortic dissection includes the steps of positioning a sinotubular junction magnetic array at the sinotubular junction, advancing counter magnetic constructs from the femoral vein and positioning them in the right atrium, expanding the sinotubular junction ring at a target position, advancing the counter magnetic array to form an at least partial circumferential seal, and advancing and positioning an ascending magnetic graft within an interior of the sinotubular junction magnetic array. A system for treating aortic dissection, a fixation device for anchoring an ascending aortic stent graft, and a transcatheter device for treating aortic dissection are also described.