38 results about "Parent artery" patented technology

The invention discloses an intracranial aneurysm rupture risk assessment method and system. The method is applied to the intracranial aneurysm rupture risk assessment method and includes steps: creating a three-dimensional model comprising a parent artery and an aneurysm on the parent artery according to intracranial image data; determining target morphological parameters of a virtual parent artery and a virtual aneurysm on the basis of the three-dimensional model; determining target hemodynamic parameters of the virtual parent artery and the virtual aneurysm on the basis of the three-dimensional model; performing operation on the target morphological parameters, the target hemodynamic parameters and target clinical parameters on the basis of a pre-trained machine learning model to obtaina virtual aneurysm assessment result for assessing aneurysm rupture risks. Therefore, by implementation of the method and the system, accuracy in aneurysm rupture risk assessment can be improved through automatic comprehensive analysis of intracranial aneurysm rupture risks according to clinical parameters, morphological parameters and hemodynamic parameters of intracranial aneurysms of patients.

Devices and methods are disclosed for occluding endovascular and non-endovascular defects, including parent artery occlusions, aneurysms and other abnormal openings in the body. The devices include one or more expandable braids that may be coupled to one or more helical coils suitable for introduction and retrieval from within a treatment area using a delivery catheter.

A method of creating a surface model of an intracranial aneurysm in an artery having a lumen, the aneurysm having a neck and a dome and the virtual reconstruction of the parent artery across the lateral extension of the aneurysm neck. The method includes the steps of: determining a center and radius of the artery over the lateral extension of the aneurysm; determining the boundary points that mark the boundary between the aneurysm neck and the artery; determining the angle of the aneurysm neck with respect to the artery, for various cross sections of the neck; determining the length of the neck; determining the height of the dome; estimating the area of the neck; and creating the surface model of the intracranial aneurysm in the artery, using the results from the previous steps.

The invention discloses a method and device for measuring morphological parameters of an intracranial aneurysm image. The method comprises constructing a three-dimensional model comprising a parent artery and an aneurysm on the parent artery according to intracranial image data, wherein the three-dimensional model comprises a virtual parent artery matched with the parent artery and a virtual aneurysm matched with the aneurysm; determining an aneurysmal neck plane of the virtual aneurysm based on the three-dimensional model and determining a target morphological parameter based on the three-dimensional model and the aneurysmal neck plane, wherein the target morphological parameter at least includes the morphological parameter of the virtual aneurysm. The three-dimensional model of the intracranial image data and the aneurysmal neck plane of the virtual aneurysm included by the three-dimensional model are utilized to measure the morphological parameters of the intracranial aneurysm automatically, which can not only improve the measurement accuracy of the morphological parameters of the intracranial aneurysm but also improve the measurement speed of the morphological parameters of theintracranial aneurysm, thus providing a scientific reference for medical staff in making treatment decisions.

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 invention discloses an electronic detaching and etching covered stent for the treatment of intracranial aneurysm. The electronic detaching and etching covered stent comprises a stent main body with a cylindrical net structure, wherein the surface of the stent middle segment of the stent main body is packaged with a plastic cover, and one end of the stent main body is also connected with a push device; the push device comprises a guide wire and a delivery guide tube arranged on the guide wire in a sleeving manner, and the front end of the guide wire is welded at one end of the stent main body with thermal fusing metal. The electronic detaching and etching covered stent can enable intracranial aneurysm haemodynamics to change, promote thrombogenesis and thrombus organization in aneurysm, achieve the purpose of anatomically reconstructing parent artery, and keep the parent artery and branches unobstructed. The electronic detaching and etching covered stent has the advantages of being simple in structure, easy to operate, precise in positioning, high in safety and total obliteration rate and low in recurrence rate and can be recycled, so that the surgery cost is reduced.

The invention discloses a novel intravascular stent used for repairing parent arteries, which has a low mesh porosity, wherein the mesh porosity of the stent is between 40 and 80 percent, and the preferred mesh porosity is between 55 and 75 percent. The intravascular stent can be implanted into a lesion blood vessel to block a lesion location, in particular aneurism so as to realize the repair, reconstruction and real anatomical healing of the blood vessel.

Devices and methods comprising hybrid implants for occluding endovascular and non-endovascular defects are disclosed, including parent artery occlusions, aneurysms, and other abnormal openings in the body.

Devices and methods are disclosed for occluding endovascular and non-endovascular defects, including parent artery occlusions, aneurysms, and other abnormal openings in the body. The devices comprise expandable braids with variety of constraining members.

The embodiment of the invention discloses a prediction method and device for intracranial aneurysm operation planning and equipment , and belongs to the technical field of medical images and computers. The method comprises the following steps: performing three-dimensional reconstruction based on to-be-processed craniocerebral image data to obtain a reconstructed blood vessel image; based on the reconstructed blood vessel image, adopting a binary tree method to obtain a tree structure of a blood vessel center line network; and based on the aneurysm parameter and the parent artery parameter of the to-be-processed craniocerebral image data and the tree structure of the blood vessel center line network, obtaining the stent model of a stent for intervention and the release position of the stent for intervention. By adopting the method provided by the embodiment of the invention, the model selection of a stent for intervention can be automatically realized, the release position of a stent for intervention can be automatically determined, and reference is provided for clinical application.

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.

The invention discloses an aneurism embolization device and an aneurism embolization system. The aneurism embolization device comprises a braided part arranged in the neck of an aneurism and fitting the same, and a support arranged in a parent artery at the neck of the aneurism; one end of the support is connected with the braided part; the other end of the support is connected with a push guide wire during interventional operation; the braided part and the support are delivered to the vascular lesion part through a micro catheter during interventional operation. Compared with the prior art, the aneurism embolization device has the advantages of lowered occupation effect, lower cost, adaptability to aneurisms different in shape at different parts, and lower risk of blocking of other branches and delayed cracking of the arteries.

The invention provides a regional blood flow guiding device as well as a preparation method and a use method thereof, and mainly aims to insulate a wide-necked aneurysm and a parent artery blood vessel and ensure blood flow in a collateral vessel to be unblocked. The regional blood flow guiding device comprises a skeleton, a regional dense net area, end part connection ribs and developing markers. The preparation method comprises the steps of skeleton cutting, residue removing, heat treatment and formation, acid pickling, polishing, marker assembling, and dense net area producting. The use method comprises the following steps: pressing the regional blood flow guiding device into a transferring sheath, sending the transferring sheath to a diseased region, locating under X rays via the developing marker of the regional blood flow guiding device, and releasing the device, wherein the dense net area completely covers the aneurysmal neck part of the wide-necked aneurysm, and blood flow in the collateral vessel is prevented from being unblocked. Compared with the prior art, the problem that the conventional regional blood flow guiding device is easy to cause blockage of the collateral vessel is solved, and operation risk is reduced effectively.

The invention discloses a nanometer electro-spinning tectorial membrane etching support and method for curing intracranial aneurysm. The nanometer electro-spinning tectorial membrane etching support comprises a support main body of a cylindrical net structure. Four radio-opaque first mark points are arranged at each of two ends of the support main body and are used for accurate release of the support. Two radio-opaque second mark points used for developing positioning of the support in the release process are arranged at the starting point and the stop point of a tectorial membrane in the middle section of the support main body. The nanometer electro-spinning tectorial membrane etching support further comprises a push device. The push device is arranged at one end of the support main body and comprises a lead wire and a conveying pipe. The lead wire is located in the conveying pipe, and the front end of the lead wire is connected with the support main body. According to the nanometer electro-spinning tectorial membrane etching support and method, intracranial aneurysm haemodynamics changes simply by inserting the support, the aneurysmal neck can be directly blocked to promote thrombus forming and organizing in the arterial aneurysm, accordingly the purpose of rebuilding parent arteries anatomically is achieved, and the parent arteries are kept unblocked.

The invention relates to a plug device for assisting an aneurysmal neck. The plug device comprises a microcatheter, a fixing guide wire, a developing guide wire, a plug device body and aids, wherein the developing guide wire is fixed on the aid at the far end of the plug device body; the fixing guide wire passes through insides of the aids and the microcatheter; two ends of the plug device body are funnel-shaped when the plug device body is in an unfolded state, and a conical angle ranges from 20-70 degrees; the plug device body adopts a meshed spatial solid structure woven by 8-20 memory metal wires, and ballooning-outs are formed by bulging of deformation of the metal wires at the middle parts of the plug device; the angle of the ballooning-outs is 110-160 degrees. The plug device for assisting the aneurysmal neck has the following advantages: the therapeutic safety is improved, and trauma is small; the plug device can be supported in a parent artery to assist a spring coil for plugging when the aneurysm is difficult to plug only by the spring coil, and the plug device can be recovered completely to be in vitro after plugging; the defect of ischemic complications caused by long-time blockage of blood flow in the parent artery is overcome when the plug device is compared with a balloon-assisted plug.

The embodiment of the invention discloses a simulation method, device and equipment, and belongs to the technical field of medical images and computers. The method comprises the steps that of acquiring aneurysm parameters and parent artery parameters of to-be-processed craniocerebral image data, wherein the center line of the parent artery is a homogenized center line; based on the aneurysm parameters and the parent artery parameters, carrying out modeling according to the velocity, the time delta t and the growth distance position to obtain a stent simulation surface of a stent for intervention, wherein the position + = value * delta t, and when a preset constraint condition is met, the velocity is reduced to 0; and based on the stent simulation surface, simulating the stent for intervention to obtain at least one simulation effect of mesh grid display, adherence display, length display, metal coverage rate, expansion coefficient, angle change curve, diameter change curve and metal wire diameter.

A method for the hemostasis of perforating and bleeding vessel related to intracerebral hemorrhage (ICH) includes navigating an occlusion device into a parent artery and then deploying the occlusive device to transiently occlude bleeding vessels to reduce blood flow and local blood pressure until hemostasis is achieved, while maintaining flow within the parent artery. Embodiments of the occlusion device include a catheter, an expandable member sized for insertion into the mid-cerebral artery (MCA) and having a length sufficient to occlude at least one ostia of the lenticulostriate arteries (LSA), with a flow path for blood provided from a proximal side of the expandable member to a distal side of the expandable member, and a semi-permeable contacting member about the expandable member and adapted to be in contact with a wall of the MCA adjacent the ostia, the semi-permeable member permitting a reduce flow of blood through the ostia.