38 results about "Parent artery" patented technology

Universal modular stented graft assemblies are assembled, on site, and often in a patient's parent artery, from at least two components; a first component and a second component. The first and second components each include a window, or fenestration. The second component couples with the first component by fitting at least partially in the first component to form the universal modular stent graft assembly with an adjustable collateral opening. As the first and second components are assembled, the first and second components are adjusted relative to each other so that the first and second component windows overlap to form a collateral opening whose size is selectable, depending on the overlap, with the desired position and dimensions in the universal modular stent graft assembly.

The invention discloses an aneurismal surgical device. The aneurismal surgical device comprises a scaffold, a delivering guide wire, a guiding sheath and a micro catheter, wherein the scaffold is a self-expanding scaffold; the delivering guide wire is arranged in the cavity of the guiding sheath, and the scaffold is bound outside the delivering guide wire; and the guiding sheath is connected with the micro catheter, and the cavity of the guiding sheath is communicated with the cavity of the micro catheter to form a channel for delivering the delivering guide wire and the scaffold to a human body. According to the aneurismal surgical device provided by the embodiment, the high-density and super-soft scaffold can be delivered to the vascular pathological change position and released, and the grid structure of the scaffold at the vascular pathological change position has high coverage rate, so that the scaffold released to the blood vessel plays the same role in parent artery healing, and vascular aneurysm can be better treated.

The invention discloses a method and a device for implanting a virtual stent for an intracranial aneurysm. The method comprises establishing a three-dimensional model of a target parent artery and ananeurysm based on intracranial image data, wherein the three-dimensional model comprises a virtual parent artery of the target parent artery and a virtual aneurysm of the aneurysm; extracting the artery centerline of the virtual parent artery according to the three-dimensional model; scaling the virtual stent based on the artery centerline until the scaled virtual stent meets the preset conditions, implanting the scaled virtual stent into the virtual parent artery and releasing the scaled virtual stent till the maximum displacement increment value is less than the preset displacement incrementvalue. According to the method, the simulation calculation time of the stent simulation implantation can be reduced to assist a doctor to plan a solid stent implantation operation and further improvethe application rate of the solid stent. With the stent simulation implantation as a reference, the solid stent implantation accuracy can be improved to reduce the risk of the solid stent implantation operation and the likelihood of postoperative complications.

The preoperative prediction method for intracranial aneurysm surgery disclosed in the present invention comprises: segmenting the 3D-DSA image data of the patient to obtain a surface representation of the geometric shape of each aneurysm blood vessel; and processed with modeled surgical implants, simulating the geometry of the implanted aneurysm with a virtual surgical stent; performing grid-dependent tests on the mesh; calculating the wall shear force corresponding to the aneurysm pressure and the The velocity perpendicular to the plane of the aneurysm was compared at the systolic peak, and the preoperative blood flow model and the postoperative blood flow model were output; the postoperative value was derived according to the postoperative blood flow model, and the surface area of ​​the aneurysm mouth and the corresponding parent artery were calculated. The ratio of the remaining circumferential surface area to the remaining circumferential surface area; parameters were derived from the preoperative blood flow model and the postoperative blood flow model, and the postoperative score was evaluated according to the parameters and ratios. The method can perform postoperative prediction and evaluation before intracranial aneurysm surgery, and provide doctors with reliable and effective auxiliary judgments.

The invention relates to an intracranial aneurysm neck reconstruction device. The intracranial aneurysm neck reconstruction device comprises a reconstruction device body, a guide wire and an outer sheath tube, wherein the reconstruction device body gradually and outwards expands from the near end to the far end; the far end of the reconstruction device body is provided with a head end developing block; the middle end of the reconstruction device body is provided with a middle end developing block; the near end of the reconstruction device body is folded downwards and is fixedly arranged on the guide wire; the guide wire is positioned in the outer sheath tube; a disconnecting point is arranged at the connected position of the guide wire and the reconstruction device body; the other end of the guide wire is connected with a disconnector. The intracranial aneurysm neck reconstruction device disclosed by the invention has the advantages that by implanting the reconstruction device body, the flowing speed of blood in an intracranial aneurysm is slowed down, the hemodynamics in the intracranial aneurysm is changed, and thus the impact from local blood flowing to an aneurismal wall can be reduced; meanwhile, through the implantation of a parent artery reconstruction device body, a local parent artery can be strengthened and repaired, and the physiological structure of a normal part of the parent artery is enabled to recover.