7 results about "Embolization material" patented technology

The present invention relates to an embolization microcatheter, comprising: a delivery section having a delivery cavity; an embolization section, one end near the distal end is recessed towards the embolization cavity of the embolization section and forms a pressure relief portion having a pressure relief hole; one end of the embolization section near the proximal end is sleeved on one end of the delivery section near the distal end, and the embolization cavity is communicated with the delivery cavity; during embolization, an embolization material is continuously injected into the embolization cavity through the delivery cavity, the pressure relief portion bulges outwards in a direction away from the embolization cavity, and then the embolization section gradually expands from the direction of the distal end towards the direction of the proximal end, and promotes the separation of the embolization section from the delivery section to achieve the purpose of embolizing blood vessels. When the embolization cavity is filled with the embolization material, the embolization material will squeeze the wall of the embolization cavity and increase the diameter of the wall of the embolization cavity, thereby promoting the separation of the embolization section from the delivery section to achieve the purpose of embolizing the target blood vessel jointly by the embolization section and the embolization material.

A liquid embolic composition of natural polymers, water, and angiographic contrast agents improves neurovascular interventions, making them more reliable, safe, and affordable. The embolic material is made of a single component activated by blood calcium ion, which triggers coagulation, and that offers superior mechanical stability and does not cause fragmentation in the target vessel. The material retains superior long-term mechanical durability after deployment and provides sufficient visualization under fluoroscopy with iodine-based angiographic contrast compounds or other radiopaque compositions. Described herein are aqueous solutions that enable a high concentration gellan gum (greater than 0.5 wt %) to retain sol state even at the range of body temperature (30-40° C.). This discovery means that it is possible to increase the concentration of gellan gum without losing its inject-ability, yet significantly improve its mechanical stability after delivery.

Treatment of aneurysms can be improved by delivering an occlusive member (e.g., an expandable braid) to an aneurysm sac in conjunction with an embolic element (e.g., coils, embolic material). A treatment system for such treatment can include an electrolytically corrodible core wire having a proximal portion, a distal portion, and a detachment zone between the proximal portion and the distal portion. An occlusive member having a proximal hub is coupled to the core wire distal portion. A conduit extends along at least a portion of the core wire. The conduit has a lumen configured to pass an embolic element therethrough.

This invention discloses an AI-powered intelligent embolization assistance system for arteriovenous malformations of the brain and spinal cord. By integrating an AI-powered intelligent embolization assistance subsystem and an image-guided platform, it matches 3D-DSA angiography images with internally stored hydrodynamic models of different embolization materials to obtain a three-dimensional vascular architecture map of the lesion and surrounding vessels. Through AI calculation, it completes virtual path planning, simulating the embolization path, three-dimensional course, and embolization range. Based on this, it provides real-time navigation of the microcatheter during EVT, intelligently following its path. After the procedure, it re-acquires 3D-DSA angiography images, performs multimodal image fusion, and assesses the embolization status, the three-dimensional relationship with surrounding structures, and potential related complications. This system enables preoperative planning and simulation of the interventional embolization path and range, and real-time navigation, tracking, and assessment of the lesion during the procedure, effectively improving the efficacy of EVT.

An aneurysm embolization device can include a body having a single, continuous piece of material that is shape set into a plurality of distinct structural components. For example, the device can have an expandable component and an atraumatic tip portion extending therefrom. Further, the tip portion can be configured to enable the device to be implanted within the aneurysm while tending to mitigate risk of puncturing the aneurysm dome or otherwise assist in framing the aneurysm in advance of placement of additional embolic material.

An embolic material delivery device in accordance with at least some embodiments of the present technology achieves a high pressure rating with a small wall thickness. The device includes an elongate conduit body configured to extend intravascularly toward a treatment location including an aneurysm. The conduit body defines an axial lumen through which viscous embolic material is conveyed toward the aneurysm while at least a portion of the liquid embolic material is at very high pressure (e.g., 9,000 psi or greater). The conduit body includes a metal hypotube coaxially disposed around the axial lumen. The hypotube includes cuts configured to increase a flexibility of the conduit body and bridges between the cuts. The conduit body further includes an elastomeric jacket extending around at least a portion of the hypotube. An average wall thickness of the conduit body is within a range of 0.005 to 0.007 inches.

The present application relates to the field of interventional medical technology, and more particularly to a remote-controlled magnetic navigation multi-injury bleeding interventional collaborative hemostasis method. The method identifies multiple bleeding sites based on angiography images and generates a magnetic navigation path planning scheme, drives the interventional catheter to reach each bleeding site in turn through an external magnetic field, and releases magnetic responsive microspheres for embolization. Real-time monitoring of hemodynamic parameters is used to evaluate the hemostasis effect, and the subsequent path and embolization material release amount are dynamically adjusted. The method realizes precise and sequential collaborative hemostasis of multiple injury bleeding sites, and improves the efficiency and safety of interventional surgery.