13 results about "Aneurysm embolization" patented technology

A computer-implemented method of predicting a status of an embolization procedure on an aneurism, includes: receiving (S110) projection image data (110) representing temporal blood flow in a region of the anatomy including the aneurism during the embolization procedure; inputting (S120) the received projection image data (110) into a neural network (120) trained to predict temporal blood flow (130), wherein the neural network (120) is trained to predict temporal blood flow (130) using training data (140) representing temporal blood flow in a region of the anatomy that does not include an aneurism; and in response to the inputting (S120): generating (S130) an output (160) indicative of the status of the embolization procedure based on the predicted temporal blood flow.

This invention provides an aneurysm embolization auxiliary device, belonging to the field of medical device technology. The device includes a delivery catheter, an operating handle, a balloon, and a filling unit. The delivery catheter delivers a treatment device to the aneurysm location. The operating handle is located at the proximal end of the delivery catheter. The balloon, after inflation, supports the blood vessel. The filling unit fills the aneurysm with an injectable gel for treating the aneurysm from the operating handle location along the delivery catheter. The injectable gel solidifies within the aneurysm. During operation, the delivery catheter delivers the balloon to the aneurysm location. After inflation, the balloon supports and positions the blood vessel. The filling unit fills the aneurysm with the injectable gel, which solidifies upon entering the aneurysm to treat it. This invention primarily addresses technical problems in existing interventional aneurysm treatment methods, such as easy displacement of coils and the increased risk of bleeding due to the need for long-term medication after stent implantation.

The invention belongs to the field of biomedical engineering, and discloses a magnetic control self-adaptive coil system for aneurysm embolism and an application method thereof, and the magnetic control self-adaptive coil system comprises a magnetic control self-adaptive coil, a magnetic navigation module and a pushing module; the magnetic control self-adaptive coil is used for self-adaptively filling regular and irregular internal space of the aneurysm; the magnetic navigation module is used for performing magnetic navigation on the magnetic control self-adaptive coil, so that the magnetic control self-adaptive coil reaches a specified position; the pushing module is used for conveying the magnetic control self-adaptive coil into the guide pipe; the magnetic control self-adaptive coil is pushed through the matched micro guide wire, or normal saline is filled into an injector, bubbles are fully discharged, and the magnetic control self-adaptive coil is pushed to move in the catheter at a constant speed; the device has good self-adaptability and can be uniformly distributed in all aneurysms to form compact filling, and the position of the catheter does not need to be adjusted; and moreover, the filling material has adjustable mechanical properties and swelling properties, and can be matched with different coils according to application scenes, so that the filling rate is improved.

This invention provides an auxiliary stent for intracranial aneurysm embolization, belonging to the field of medical device technology. The stent includes a stent body, which extends axially and includes a first anchoring section, a support section, a second anchoring section, and a third anchoring section integrally arranged sequentially. The first anchoring section has a semi-open loop structure and forms a funnel-shaped structure. The support section has a closed loop structure and is positioned at least directly opposite the neck of the aneurysm to provide the main radial support force to resist the outward pressure of the spring coil. The second anchoring section has a semi-open loop structure and a funnel-shaped structure. The third anchoring section has an open loop structure and forms a continuous funnel-shaped structure with the second anchoring section. Through its segmented structural design, this invention significantly improves the apposition and positional stability within the blood vessel, thereby effectively reducing the risk of complications related to stent displacement and poor apposition.

The utility model provides an aneurysm embolism device with a spring ring integrated with an umbrella-shaped dense net. The aneurysm embolism device comprises a spring ring body, a central connecting rod and a metal woven dense net, one end of the spring ring body is connected with the central connecting rod through a micro rivet; the metal woven dense net is of an umbrella-shaped structure, and the tail ends of net wires in the center of the metal woven dense net are axially bundled and fixed in a lantern ring in the center through welding. The lantern ring is fixedly welded to the end, away from the spring ring body, of the center connecting rod. According to the integrated umbrella-shaped dense net spring ring system, the traditional embolism technology and the blood flow guiding concept are creatively combined, the dense net structure serves as a physical barrier and can effectively prevent the spring ring from shifting, and the precise net hole design can remarkably change the hemodynamic characteristics of the tumor neck; in addition, due to the integrated design, the surgical operation process is simplified, and the technical difficulty is reduced. The innovative design concept not only solves the key technical problem in the treatment of the wide-neck aneurysm, but also remarkably improves the safety and reliability of the treatment.

The utility model discloses an aneurysm embolism device which comprises a micro catheter, a micro guide wire and a spring ring, the micro guide wire is inserted into a catheter cavity of the micro catheter in a penetrating mode, and the micro guide wire conveys and guides the micro catheter so as to guide the micro catheter to be inserted into an aneurysm. The spring ring is pushed into the aneurysm from a tube cavity of the micro catheter, the embolism device further comprises a flow velocity sensor used for measuring the flow velocity of blood flow in the aneurysm, and the flow velocity sensor is arranged on the micro catheter or the micro guide wire and located at the end, close to the aneurysm, of the micro catheter or the micro guide wire. According to the aneurysm embolization device, in the process of embolizing the spring ring, the blood flow speed in the aneurysm can be monitored through the flow speed sensor, so that a doctor is assisted in judging whether the spring ring needs to be continuously embolized or not and evaluating the placing effect of the spring ring, it is guaranteed that the aneurysm is effectively treated, meanwhile, excessive treatment can be reduced, and the operation accuracy is improved.

The invention belongs to the field of biomedical engineering, and discloses a magnetic-thermal double-response hydrogel embolism coil capable of being used for enhancing aneurysm embolism through magnetic guidance and a preparation method and an application method of the magnetic-thermal double-response hydrogel embolism coil. The preparation method comprises the following steps: by taking pentaerythritol tetraacrylate as a cross-linking agent and 2-hydroxy-4 '-(2-hydroxyethoxy)-2-methyl propiophenone as a free radical initiator, adding a thickening and dispersing aid and magnetic nanoparticles, and carrying out free radical polymerization reaction under ultraviolet irradiation, thereby obtaining the magnetic nano-composite material. The magnetic-thermal dual-response hydrogel embolism coil is in a glassy state below room temperature and is used for straightening and stably passing through the micro catheter; and the magnetic-thermal dual-response hydrogel embolism coil recovers to a preset shape when the temperature rises to the body temperature, and is used for realizing an embolism structure of the bag-shaped space. According to the invention, the packing density is obviously improved.

The invention discloses a spring ring mechanical release device and an aneurysm embolism system, and relates to the technical field of aneurysm embolism instruments, the spring ring mechanical release device comprises a push rod and a release mechanism, the far end of the push rod is provided with a mechanical locking mechanism, and the mechanical locking mechanism has a locking state and a loosening state; the mechanical locking mechanism is used for being detachably connected with the near end of the spring ring. The far end of the releasing mechanism is connected with the mechanical locking mechanism, the near end of the releasing mechanism is a force application end, and the locking state and the loosening state of the mechanical locking mechanism can be switched by controlling the force application end; controllability of the release time of the spring ring can be achieved, and the problems that the spring ring is released by mistake and the controllability is poor are solved.

The invention relates to the technical field of aneurysm embolism stents, in particular to a stent and plugging integrated aneurysm embolism stent. According to the embolism stent, a self-expansion mesh basket is arranged on one side of the middle of a stent body, the embolism stent is released after being conveyed to a blood vessel where an aneurysm is located, the stent body is expanded firstly, the stent body is supported in the blood vessel firstly, then the self-expansion mesh basket is expanded again, and the large end of the self-expansion mesh basket extends into the aneurysm; the small head end is located at the aneurysm neck opening position, so that the self-expansion net basket can block the aneurysm neck opening of the aneurysm, the self-expansion net basket blocks blood flow in the aneurysm, immediate blocking is achieved, the risk of aneurysm rupture in the treatment process is reduced, and the long-term recurrence rate is possibly reduced; and the operation of the spring ring in the aneurysm is avoided, so that the risk that the spring ring protrudes into the aneurysm carrying artery or punctures the aneurysm is fundamentally eliminated.

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.

The application discloses a spring ring mechanical release device and an aneurysm embolization system, relates to the technical field of aneurysm embolization devices, and comprises a push rod and a release mechanism. The distal end of the push rod is provided with a mechanical locking mechanism. The mechanical locking mechanism has a locking state and a loosening state. The mechanical locking mechanism is used for detachable connection with the proximal end of a spring ring. The distal end of the release mechanism is connected with the mechanical locking mechanism. The proximal end of the release mechanism is a force applying end. The locking state and the loosening state of the mechanical locking mechanism can be switched by controlling the force applying end. The application can realize controllability of a spring ring release time, and avoids the problems of spring ring misrelease and poor controllability.

The present invention relates to a method for preparing a filling material for cerebral aneurysm embolization, and use thereof. The filling material for cerebral aneurysm embolization, prepared according to the preparation method of the present invention, and thus can contribute to increasing the success rate of embolization and improving the safety of surgery, thereby being suitable for use in actual cerebral aneurysm embolization procedures.

The present application relates to the field of aneurysm embolization devices, in particular to an aneurysm embolization device, comprising: a first embolization body comprising a support net and a first embolization wire connected to one end of the support net; a second embolization body comprising a sealing net and a second embolization wire connected to one end of the sealing net; the second embolization wire is slidably connected to the first embolization wire at the end away from the sealing net; a limiting ball is connected to the sealing net through a connecting wire; when the aneurysm embolization device is in an expanded state, the support net and the sealing net are both in a cover shape, and the limiting ball is located in the first space or the second space of the sealing net; the first embolization wire and the second embolization wire are elastically deformed and jointly form an embolization support body, and the embolization support body is used for filling the space between the support net and the sealing net. The present application also relates to a delivery system.