60 results about "Aorta part" patented technology

The invention discloses an ultrasonic imaging system and method based on a heart surface, a medium and a product, the system comprises an ultrasonic detection assembly and an imaging terminal which are in communication connection, an ultrasonic transducer is packaged at the head end of an attached ultrasonic probe in the ultrasonic detection assembly, and an acoustic window on the ultrasonic transducer is planar; the ultrasonic transducer is used for being attached to the surface of the heart or the aorta, and the plane of the ultrasonic transducer is parallel to the plane of the acoustic window; and the imaging terminal is used for generating a sound velocity mask pattern according to the reference ultrasonic image, determining echo time delay data according to the sound velocity mask pattern, synthesizing and reconstructing the radio frequency signal data according to the echo time delay data to obtain an ultrasonic image, performing motion compensation on the image sequence, performing multi-modal fusion on the ultrasonic image subjected to motion compensation, and obtaining a final ultrasonic image. The problem of acoustic interference of anatomical structures such as the chest wall and the esophagus in a traditional echocardiography technology is solved, and real-time and high-quality image support is provided for cardiac surgery.

The subject of the invention is a delivery system for delivering a self-expanding endoluminal prosthesis to the patient's ascending aorta and aortic valve, the system comprising: - an inner tube (33), extending along a longitudinal Y axis of the delivery system (100), from an atraumatic distal tip (27) to a handle (37); - a metal tube (32), slide-fitted on the inner tube (33), and extending from the internal space of the distal tip (27) to a handle (37); - an outer tubular catheter shaft (22) slide-fitted on the metal tube (32), the catheter shaft (22) is brought out from the handle (37) and is terminated by a capsule (20), containing inside the radially compressed on the metal tube (32), self-expanding endoluminal prosthesis (1) having defined construction and covered at least partially by a coating (16), - the capsule (20) has closed position when is closed by the tip (27) and has open position when the capsule (20) and the tip (27) are displaced relative to each other; wherein the distal part of the metal tube (32) is equipped with receiving means (41, 42) on which the distal locking means (7) of prosthesis (1) are removably embedded and blocked in the inner space of the tip (27) and the delivery system (100) comprises also removable holding means (45, 45') retaining the proximal locking means (9) of the prosthesis (1), so that when the capsule (20) is in its fully open position, the prosthesis (1) is still maintained partially compressed, holding its crimping length.

Systems and apparatus are provided for using a non-invasively monitored uncalibrated pressure signal from a patient to compute cardiac output and other cardio-vascular parameters, thereby providing safe, effective, reliable and low cost monitoring of patient health. Wearable devices are disclosed that include a sensor array for obtaining patient data that is used to provide an estimate of aortic systolic blood pressure, cardiac output, and end-systolic elastance that may be determined without the need for a cuff.

The percutaneous intervention type axial flow blood pump comprises an impeller assembly, a flexible shaft transmission assembly and a handle assembly, the impeller assembly and the handle assembly are connected through the flexible shaft transmission assembly, the flexible shaft transmission assembly comprises a flexible shaft, a transition sleeve and a protective sleeve, the transition sleeve is connected with a flow guide tail cone of the impeller assembly, and the protective sleeve is connected with the impeller assembly. One end of the protective sleeve is fixed to the inner wall of the transition sleeve, the other end of the protective sleeve is connected with the handle assembly, the handle assembly is provided with an in-vitro micro motor in transmission connection with one end of the flexible shaft, and the other end of the flexible shaft is connected with an impeller rotor of the impeller assembly. The impeller assembly and part of the flexible shaft transmission assembly of the axial flow blood pump are percutaneously implanted into the body of a patient, the handle assembly is located outside the body, and the impeller assembly is kept fixed in the descending aorta through an elastic support of the impeller assembly. The axial flow blood pump adopts an in-vitro micro motor and flexible shaft transmission mode, and the problems that the temperature rise of an axial flow blood pump with a built-in motor is too high, abrasion particles are separated out, and fault inspection is not convenient are solved.

The present application belongs to the technical field of medical operation auxiliary, and particularly relates to a precise tension control method and system for aortic repair operation. By acquiring the edge information and repair displacement of the repair area, the present application can not only evaluate the feasibility of the repair operation, but also obtain multiple executable repair plans through simulation calculation, so that the doctor can pre-plan the best repair scheme before the operation is implemented, greatly improving the success rate and safety of the operation. At the same time, the tension parameters in the repair process can be monitored in real time during the operation, ensuring that the repair process is carried out within a safe range, preventing the repair area from being stretched or compressed excessively, avoiding surgical risks, and through precise control of tension and optimization of repair plans, the operation time is shortened, the operation efficiency is improved, and the postoperative recovery time and complication risk of the patient are reduced.

The internal leakage prevention structure comprises a plurality of separation blade single bodies arranged on the outer surface of the covered stent, each separation blade single body comprises a separation blade main body and a supporting wire, the separation blade main body is in a blade shape or a flipper shape, a roughening structure is arranged on the surface of the separation blade main body, and the supporting wire is arranged on the surface of the separation blade main body. One end of the support wire is connected with the catch main body, and the other end of the support wire is fixedly connected with the covered stent; a certain included angle is formed between the blocking piece single bodies and the side wall of the covered stent, part of the blocking piece single bodies are arranged around a pre-windowing hole of the covered stent, the rest of the blocking piece single bodies are arranged on the outer surface of the covered stent in a multi-position scattered mode, and the multiple blocking piece single bodies integrally form a breakwater-shaped structure. After the speed of leaked blood flow is reduced, thrombus is slowly generated, the leaked blood flow is naturally blocked, and therefore the probability of internal leakage is reduced.

A vascular graft deployment tool can include a handle, an elongate mandrel positioned distal to the handle, a vascular graft at least partially disposed coaxially about the mandrel, a sheath assembly including a distal sheath portion and a proximal sheath portion, wherein the distal and proximal sheath portions are configured to constrain the vascular graft against the mandrel at an insertion diameter, and an actuator movable relative to the handle and engaging the sheath assembly, wherein operation of the actuator causes at least one of the distal and proximal sheath portions to longitudinally separate to free at least a portion of the vascular graft. Further, the vascular graft is expandable from an insertion state to a deployed state, and at least two suture envelopes are positioned between opposite end portions of the vascular graft.

The application belongs to the technical field of medical devices, and relates to a delivery system for a prosthetic valve, which comprises a guide wire, an ultrasonic probe and a processing module. The guide wire is used to build a delivery channel for a prosthetic valve to be delivered, and the end of the guide wire is provided with a guide wire head. The ultrasonic probe is arranged on the guide wire head, and is used to emit ultrasonic signals to the aorta and receive ultrasonic echo signals. The processing module is used to receive and respond to the ultrasonic echo signals, determine an aortic valve opening area according to the ultrasonic echo signals, output a first control instruction according to the aortic valve opening area and a current position of the guide wire head obtained in advance, and drive the guide wire head to move to the aortic valve opening area. The application reduces the difficulty of over-valve operation, shortens the operation time, avoids other surgical risks caused by long operation time, and has high safety.

The invention provides a training evaluation method and device for balloon blocking hemostasis, a medium and a product, and relates to the technical field of intelligent teaching. And respectively acquiring static pressure data reflecting the mechanical characteristics of the blood vessel wall and dynamic pressure data reflecting the hemodynamic characteristics. On the basis, the system combines specific preset bleeding case data, and determines hemostasis pressure ranges and partial hemostasis pressure ranges corresponding to different areas of the aorta under specific operation conditions through calculation. When a user operates, the system can call the matched pressure range standard according to the current real-time blocking position and the target operation combination parameter, and compares the collected real-time blocking pressure with the matched pressure range standard. According to the scheme, the technical problem that an existing simulation training system is difficult to adapt to complex fluid mechanics changes of a simulated person in different physiological states is solved.

Provided are an artificial intelligence AI-based simulation device and method for supporting procedure planning in transcatheter aortic valve implantation. The device receives patient-specific medical images, such as computed tomography data, and generates a three-dimensional (3D) model of the aortic root and native valve. An artificial valve is virtually inserted into the 3D model, and the virtual implantation model is automatically converted into mesh data suitable for Computational Fluid Dynamics (CFD) and Fluid-Structure Interaction (FSI) analysis. The processor performs CFD / FSI simulations to evaluate hemodynamic changes, structural stresses, and potential device-tissue interactions. Based on the analysis, the system outputs predicted risks of procedure-related complications (including coronary obstruction, annular rupture, paravalvular leakage, and valve deformation) and provides guideline data for selecting valve size, implantation depth, and insertion angle. The disclosed device and method enable accurate, patient-specific prediction and visualization, thereby assisting clinicians in establishing safe and optimized TAVI procedure plans.

The invention discloses a river network flood control situation studying and judging method and system based on blood vessel-nerve collaborative bionics. According to the method, a multi-source monitoring sensing network is constructed in a river network in a bionic mode to collect hydrological data in real time, the river network is divided into three levels of aorta, arteries and capillaries according to human body blood vessel grading characteristics, and a dynamic regulation and storage model is constructed in combination with an improved Saint-Venant equation set and a Manning formula. And calculating a basic conveying index, a dynamic buffer index, a structural stability index and an instantaneous risk pressure index. A comprehensive bearing capacity index is generated through a bearing capacity-pressure framework, five-level situation risk grading is achieved, and finally visual study, judgment and early warning are conducted based on a GIS platform. According to the invention, the accuracy and foresight of river network flood control regulation and control are improved.

The invention belongs to the technical field of medicine, and discloses a thoracic aorta in-situ fenestration and whole-course brain protection integrated device and method. According to the method, a bundling balloon is formed by a plurality of small balloons, the different small balloons are controlled to be inflated or shrunk under pressure relief, and the angle of a puncture needle is adjusted through the bundling balloon catheter. And the far-end protection umbrella covers the cluster balloon catheter and is used for preventing thrombus from escaping to the far end. According to the invention, the bundling balloon composed of a plurality of small balloons is designed, and the angle of the puncture needle is adjusted by controlling the different small balloons to expand by filling or shrink by releasing pressure, so that the time for an instrument to enter a membrane rupture window is greatly shortened, and the positioning accuracy of a membrane rupture point of the covered stent is improved; meanwhile, a far-end protective umbrella is arranged to prevent thrombus and other foreign matters from escaping to the far end.

The utility model provides an in-situ windowing membrane rupture device for a covered stent, which relates to the field of medical instruments and comprises an outer tube, a middle-layer positioning tube, an inner-layer positioning tube and a membrane rupture guide wire which are sequentially sleeved from outside to inside and can relatively axially slide two by two, an elastic expansion part is connected to the peripheral surface of the far-end section of the middle-layer positioning tube and has an expansion state of expanding in the radial direction to be spherical and a contraction state of contracting in the radial direction; the outer tube can axially slide relative to the middle-layer positioning tube, so that the elastic expansion part is accommodated or released in the outer tube; the far-end face of the inner-layer positioning pipe is provided with concave-convex positioning sawteeth facing the far-end direction. The aorta covered stent at least relieves the technical problem that in the prior art, when an aorta covered stent is subjected to in-situ windowing and membrane rupture, guide wire positioning is not accurate.

The application provides a split aortic regurgitation valve stent and artificial valve, the valve stent comprises a stent body and a positioning member, the positioning member is sleeved on the outer periphery of the stent body, one end of the positioning member is movably connected to one end of the stent body through a soft connection structure; the stent body is divided into an inflow end and an outflow end along the axial direction; the positioning member has a plurality of positioning rods connected in sequence, the middle part of the positioning rod is formed with a bent positioning foot towards the inflow end, the two ends of the positioning rod are connected to the outflow end through the soft connection structure and towards the outflow end, a threaded sleeve is arranged on the bent positioning foot, and the threaded sleeve is used for being connected with a traction thread in a threaded mode to control the opening angle of the positioning member in the implantation process through the traction thread. The opening angle of the positioning member is controllable, and the risk of sinus injury is relatively low.

The invention discloses a method and a system for predicting the mechanical property of a blood vessel and calcified plaque material. The method comprises the following steps: constructing a three-dimensional geometric model containing an aorta root blood vessel wall, an autologous valve and a calcified plaque; constructing a bracket geometric model actually implanted in the operation; using finite element analysis to simulate the implantation process of the stent, and obtaining the geometric morphology index of the simulated stent valve ring; based on the obtained geometrical morphology indexes of the stent valve ring, the material mechanical property with clinical value of the target patient is determined; obtaining material mechanical properties with clinical values of a plurality of target patients and corresponding clinical feature data thereof, and constructing a data set; based on the constructed data set, a nonlinear regression model is adopted to construct a prediction model of clinical features and material mechanical properties; and performing prediction by using the prediction model. By adopting the method and the system, the mechanical property of the individual material can be obtained noninvasively, and the mechanical property of the new patient material can be predicted by associating the mechanical property with the clinical characteristics.

The present disclosure relates to a stent for the full length of an aorta, a stent kit, and a stent delivery system. The stent is provided with a stent body and a cavity formed by means of enclosure of the stent body. The stent has a length of 200 mm-600 mm and an outer diameter gradually tapered from 60 mm-30 mm to 30 mm-10 mm; and the stent body is woven of at least two wires with different diameters and is configured to be compressible and extensible at any position in the axial direction of the stent in a released state, wherein a first wire has a diameter of 20 µm-150 µm, the second wire has a diameter of 150 µm-800 µm, and at least one branch stent fixing mechanism is arranged in the cavity.

This invention belongs to the field of medical devices and discloses a vascular rupture sealing device, including a sealing assembly and a driving assembly. The sealing assembly includes a first sealing part, a second sealing part, and an elastic sealing component. This invention enables the elastic sealing component to deform outwards when the first and second sealing parts compress it. This deformation causes the pressing part to extend outwards. The thickening reduces the rolling effect, allowing the pressing parts at both ends to move relative to each other and press against both sides of the aortic intima for sealing. Furthermore, the smaller diameter before deformation facilitates insertion into the rupture, making installation convenient, the structure simpler, and more effective.

comprising a working catheter (3) and at least one tool being configured to slidably move through the working catheter (3); characterized by the fact that said tool is an expandable stent (26) configured to allow an opening of an aortic native valve, the stent (26) furthermore comprising an ultrasonic transducer (25).

The application discloses an in-vitro splicing method of a covered stent and the covered stent. The in-vitro splicing method of the covered stent comprises the following steps: constructing a digital model of an aortic vessel segment of a patient's affected part; generating a physical model of the aortic vessel segment of the patient's affected part according to the digital model; selecting a plurality of stent units and placing the plurality of stent units in the physical model; and connecting every two adjacent stent units to connect the plurality of stent units into an integral covered stent. The covered stent is formed by the in-vitro splicing method of the covered stent. The covered stent constructed by the application has higher conformity with the shape of the aorta of the patient's affected part, has better stability, is more in line with the physiological characteristics of human blood flow, and can be sent into the body as a whole when the covered stent is transported into the body, thereby reducing the operation in the body and improving the safety.

This invention provides a three-dimensional quantitative analysis and visualization method and system for aortic diameter expansion velocity based on longitudinal imaging data, applicable to the field of data processing. This application uses baseline and follow-up longitudinal aortic CTA images as the data source. Preprocessing includes spatial resampling and intensity normalization. The aortic lumen is extracted through medical image segmentation, and a voxel mask is generated. Then, the isosurface is reconstructed using the traveling cubes algorithm, and two sets of triangular surface mesh models are obtained through smoothing, cropping, repair, and remeshing. Using the baseline mesh as the source and the follow-up mesh as the target, topologically identical geometric matching is achieved through non-rigid registration. The centerline is extracted, and the point-by-point diameter is calculated. Combined with the follow-up time, three-dimensional quantitative data of the global diameter expansion velocity is obtained. Finally, multi-morphological visualization of expansion velocity and risk stratification is achieved through color mapping, 3D printing, and two-dimensional planar unfolding, constructing a complete three-dimensional quantitative analysis system for the aorta.

A method and apparatus for generating an actual morphological model of an aorta root, the method comprising: setting a plurality of first control points on a structural contour of an ultrasonic image according to a first rule, and setting a plurality of second control points on a structural contour of a section shape according to a second rule, the plurality of sub-anatomical structures of the second rule are in one-to-one correspondence with the plurality of sub-anatomical structures of the first rule, and the control point generation rules associated with the two corresponding sub-anatomical structures in the first rule and the second rule are the same; therefore, the plurality of first control points and the plurality of second control points form a one-to-one correspondence relationship about matching of the aorta root on the anatomical structure position point. Therefore, corresponding point positions of the same sub-anatomical structure are limited on the ultrasonic image and on the section shape corresponding to the three-dimensional template model, and deformation of the three-dimensional template model needs to be restrained by one-to-one superposition, and under the constraint, the three-dimensional template model can be closer to a real model shape of a current patient about a target part after deformation.

The invention relates to an intelligent system for aortic balloon occlusion training, which comprises a human-shaped shell, an artery simulation structure and a blood simulation mechanism, the artery simulation structure is arranged in the human-shaped shell and comprises an artery channel used for simulating human artery blood vessels, and the tube wall of the artery channel is provided with a detachable puncture part; the puncture part is made of an elastic recoverable material, the puncture part is used for a puncture needle to penetrate through, and the puncture part can be tightly attached to the puncture needle when the puncture needle is inserted; the human-shaped shell is provided with a puncture needle entering area corresponding to the puncture part, the puncture needle entering area is provided with a simulated skin layer made of an elastic recoverable material, and a puncture needle penetrating through the puncture needle entering area can be inserted into the corresponding puncture part; the blood simulation mechanism is connected with the end, close to the neck, of the artery channel and used for providing blood simulation liquid for the artery channel.

The invention discloses an abdomen pressurizing device for aortic disease patients, and relates to the technical field of medical auxiliary equipment, the abdomen pressurizing device comprises a flexible waistband, and a locking plate is slidably arranged on the outer surface of the flexible waistband; the adjusting assembly is assembled at the end part of the locking plate and is used for adjusting the position of the pressurizing equipment; the protection assembly is assembled at the end part of the adjusting assembly and is used for emergently releasing the internal pressure of the pressurizing equipment; according to the abdomen pressurizing device for the aortic disease patient, the body forms, illness states and comfort requirements of different patients are accurately adjusted through the adjusting assembly, the device can adapt to wider use scenes and patient requirements, and therefore the comfort and the treatment effect of the patients are improved; a patient can receive treatment in the best posture, the comfort level can be improved, the treatment effect can be guaranteed, the body position of the patient can be adjusted to the most suitable angle or position, and rehabilitation is promoted or pain is relieved.

An axially compressible bare stent for an aorta, formed by interleaving at least two wires having different diameters, i.e., a first wire and a second wire, in an overlapping manner. In a natural release state, the bare stent has a metal coverage of at least 30%. The first wire has a diameter of 20-150 μm, and the second wire has a diameter of 150-600 μm. During the use in the treatment of aortic aneurysms and / or aortic dissection lesions, low liquid permeability and a strong radial support force are provided at a desired location in an aorta by means of the axial compressibility of the bare stent.

A method includes acquiring a series of images over time from a liver of a subject injected with a contrast bolus, wherein the series of images span multiple phases of the contrast-enhanced scan. The method includes inputting the series of images into a trained neural network framework and utilizing the trained neural network framework to separately segment an aorta and a portal vein from each image of the series of images. The method includes utilizing the trained neural network framework to select exact respective time points for at least an aortic phase and a portal-venous phase based on the aorta and the portal vein segmented in each image. The method includes outputting a first set of images associated with the aortic phase and a second set of images associated with the portal-venous phase based on the exact respective time points selected for the aortic phase and the portal-venous phase.

A deployment tool and associated method are disclosed for implanting a vascular connector in a patient. The vascular connector deployment tool has a housing, an inner sheath extending distally from the housing, a floating mandrel, a vascular connector disposed coaxially about the mandrel, and an outer sheath telescopically deployed over an inner sheath. The outer sheath constrains the vascular connector around the mandrel in an insertion profile when the outer sheath is disposed over the vascular connector. The inner sheath may be rotated to cause the outer sheath to retract relative to the floating mandrel and expose sequential portions of the vascular connector. A drive disposed within the housing and coupled to a proximal end of the outer sheath translates rotational motion of the inner sheath into longitudinal motion of the outer sheath.

The application belongs to the technical field of medical devices, and discloses a multi-parameter linkage measuring and shearing equipment for artificial blood vessel suitable for aortic dissection repair, which adopts a modular integrated connection mode, and is composed of a rack, a guiding and positioning module, an integrated measuring and shearing module, a driving module, a control module and a power supply module. The modules are connected through detachable mechanical connection, electrical connection and signal connection to realize linkage and cooperation. The guiding and positioning module is fixedly connected to the front end of the rack, the integrated measuring and shearing module is slidably connected to the rack through a sliding guide mechanism and is accurately positioned with the guiding and positioning module, the driving module is embedded in the rack and is power-connected to the integrated measuring and shearing module through a transmission assembly, the control module is installed in the middle of the rack through a fixed support and is electrically connected to the integrated measuring and shearing module, the driving module and the power supply module, and the power supply module is detachably connected to the rear end of the rack to provide stable power supply for the whole equipment.

A medical device including a expandable graft and valve attachment and methods related to attaching the valve (with or without an elongated graft poriton) to a fenestrated stent graft are disclosed. The device and methods disclosed herein are particularly suitable for Endo-Bentall procedures via a minimally invasive endovascular technique used to repair the aortic root and ascending aorta. An exemplary device has an larger diameter at a proximal end with fenestrations associated with tunnel lumens longitudinally aligned with the graft lumen. The proximal end of the main graft lumen is receives a valve, wherein the graft lumen trifurcates in a retrograde manner parallel with the first tunnel and second tunnel. The first and second tunnel is configured to receive a first and second bridging stent.

The application provides an aorta coarctation special balloon dilatation type auxetic structure partition stent, which comprises a framework and a covering film, the framework comprises an auxetic support area and two compliant areas, the auxetic support area is arranged between the two compliant areas, and the covering film is arranged on the auxetic support area and the compliant areas respectively; the auxetic support area comprises at least two circles of auxetic units, the at least two circles of auxetic units are arranged in the axial direction, and adjacent two circles of the auxetic units are connected, the auxetic unit comprises a plurality of polygonal meshes arranged in the circumferential direction, the polygonal mesh has a pair of concave corner portions, and the inside of at least part of the polygonal meshes is provided with a reinforcing ring, the reinforcing ring is connected with the pair of concave corner portions through reinforcing wires, and the geometric adaptability to a diseased blood vessel is improved.

The application belongs to the technical field of medical images, and discloses a coronary vessel center line extraction method, device, equipment and storage medium. The method comprises the following steps: acquiring a coronary segmentation image and an aorta segmentation image, and detecting the coronary segmentation image to obtain a first left coronary starting point and a first right coronary starting point; performing inflation processing on the aorta segmentation image to obtain a target aorta segmentation image; performing intersection segmentation on the coronary segmentation image based on the target aorta segmentation image to obtain a final coronary segmentation image; detecting the final coronary segmentation image, and determining a left coronary end point and a right coronary end point after detecting a second left coronary starting point and a second right coronary starting point; and determining a left coronary vessel center line and a right coronary vessel center line based on the first left coronary starting point, the first right coronary starting point, the left coronary end point and the right coronary end point. In this way, the coronary vessel center line can be accurately extracted when the coronary vessel origin is abnormal.