27 results about "Aneurysm embolization" patented technology

The invention relates to an aneurysm embolism device, comprising: a connecting wire comprising a flexible section, an embolism section and a shaping section; the flexible section is located at the end, close to the far end, of the connecting wire, the shaping section is located at the end, close to the near end, of the connecting wire, and the embolism section is located between the flexible section and the shaping section. The connecting wire is made of a nickel-titanium alloy material; the guide spring is arranged on the flexible section in a sleeving manner and is connected with the connecting wire; the end, close to the far end, of the guide spring is a hemispherical end. The developing wire is wound on the plug section; the plurality of fiber pieces are arranged on the developing wire and are sequentially arranged at intervals along the length direction of the connecting wire; the closed spring is arranged on the shaping section in a sleeving manner; the first limiting ball is arranged on the shaping section of the connecting wire and located at the end, close to the near end, of the closed spring. The structure occupies a small space in the lumen of the micro-catheter in a compressed state, and even if a fiber piece is arranged on the developing wire, the aneurysm embolization device can still be transported in the micro-catheter conveniently. The invention also relates to a conveying system.

The invention relates to the technical field of conveying of aneurysm embolism instruments, in particular to an implant conveying system which comprises a pushing tube, a conveying tube, a connecting tube and a connecting rod. One end of the conveying piece is connected with one end of the pushing pipe through a connecting spring; the conveying piece is provided with a conveying cavity and a positioning hole communicated with the conveying cavity; one end of the releasing wire sequentially penetrates through the pipe cavity, the inner space of the connecting spring and the conveying cavity into the positioning hole, and the other end of the releasing wire is arranged at the other end of the pushing pipe through a fixator; when the implant is conveyed, the tail ring of the implant is arranged in the conveying cavity, and one end of the release wire sequentially penetrates through the pipe cavity, the inner space of the connecting spring, the conveying cavity and the tail ring to enter the positioning hole; and the end, located in the positioning hole, of the release wire is pulled out through the fixator, so that the implant is released. The tail ring of the implant is limited by arranging the release wire in the positioning hole, so that the implant is convenient to convey. Not only is the operation of the implant in the releasing process simplified, but also the releasing stability is improved.

The invention relates to an aneurysm embolism device, which comprises an embolism main body, which comprises a near-side net body, a middle net body and a far-side net body which are sequentially connected along the axial direction of the embolism main body, and the diameter of the middle net body is smaller than the diameter of the near-side net body and the diameter of the far-side net body; the aneurysm embolism device has a compressed state and an unfolded state, in the compressed state, the near-side net body and the far-side net body are oppositely folded, the near-side net body is folded and wraps the middle net body, and the far-side net body is folded and wraps the near-side net body; therefore, the pushing resistance of the device in the conveying catheter can be reduced, and the operation difficulty is reduced.

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.

The invention relates to the technical field of medical instruments, and discloses an aneurysm embolism device with a good anchoring effect. The intratumoral embolism device comprises an intratumoral embolism device formed by weaving metal wires with a fixed weaving strand number and a conveying system used for delivering the intratumoral embolism device into an aneurysm for implantation, the intratumoral embolism device is provided with rhombic grids formed by weaving a plurality of metal wires in a staggered mode, and the intratumoral embolism device comprises a top, a middle and a bottom. The diameter of the intratumoral embolism device in an unfolded state is gradually reduced from the top to the bottom, and the whole intratumoral embolism device is funnel-shaped. According to the intratumoral embolism device, the funnel-shaped structure is adopted, and the stacking area is arranged at the top of the intratumoral embolism device, so that the intratumoral embolism device can be stably and firmly anchored in an aneurysm after being implanted into the aneurysm, and the problems that the intratumoral embolism device is disengaged from the aneurysm in the operation process or shifts due to the impact of blood flow and the like are solved.

The invention provides an aneurysm embolism auxiliary device, and belongs to the technical field of medical instruments. The device comprises a conveying catheter, an operating handle, a balloon and a filling unit, wherein the conveying catheter is used for conveying a treatment instrument to an aneurysm position; the operating handle is arranged at the near end of the conveying catheter; the balloon is arranged at the far end of the conveying catheter and is used for supporting a blood vessel after being filled; the filling unit is used for filling injection gel for treating the aneurysm into the aneurysm along the conveying catheter from the position of the operating handle, and the injection gel is used for being solidified in the aneurysm; during working, the conveying catheter conveys the balloon to the aneurysm position, the balloon supports a blood vessel for positioning after being filled, the filling unit fills injection gel into the aneurysm, and the injection gel is solidified and formed after entering the aneurysm so as to treat the aneurysm; the technical problems that in an existing aneurysm interventional therapy mode, a spring ring is prone to displacement, and bleeding risk is increased due to long-term medicine taking after stent implantation are mainly solved.

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.

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 utility model relates to an aneurysm embolism device which comprises a far-end embolism ring and a near-end spiral net connected with the far-end embolism ring. After being released into the aneurysm, the far-end embolism ring deforms into a polyhedral three-dimensional structure capable of being supported on the inner wall of the aneurysm, and the near-end spiral net deforms into a spiral shape with the diameter gradually reduced from the far end to the near end. According to the utility model, the embolism density can be increased, the rupture opening of the rupture aneurysm can be quickly and effectively blocked, the postoperative recurrence and rupture risk is reduced, the use amount is reduced, the medical cost is reduced, and the operation safety is improved.

The utility model relates to the technical field of medical instruments, and discloses an aneurysm embolism device with a good anchoring effect. The intratumoral embolism device comprises an intratumoral embolism device formed by weaving metal wires with a fixed weaving strand number and a conveying system used for delivering the intratumoral embolism device into an aneurysm for implantation, rhombic grids formed by weaving a plurality of metal wires in a staggered mode are arranged on the intratumoral embolism device, and the intratumoral embolism device comprises a top, a middle and a bottom. The diameter of the intratumoral embolism device in an unfolded state is gradually reduced from the top to the bottom, and the whole intratumoral embolism device is funnel-shaped. According to the intratumoral embolism device, the funnel-shaped structure is adopted, and the stacking area is arranged at the top of the intratumoral embolism device, so that the intratumoral embolism device can be stably and firmly anchored in an aneurysm after being implanted in the aneurysm, and the problems that the intratumoral embolism device is disengaged from the aneurysm in the operation process or shifts due to the impact of blood flow and the like are solved.

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 application belongs to the field of biomedical engineering, and discloses a magnetic control adaptive coil system for aneurysm embolization and an application method thereof, which comprises a magnetic control adaptive coil, a magnetic navigation module and a pushing module; the magnetic control adaptive coil is used for adaptive filling of regular and irregular aneurysm internal spaces; the magnetic navigation module is used for magnetic navigation of the magnetic control adaptive coil, so that the magnetic control adaptive coil reaches a specified position; the pushing module is used for conveying the magnetic control adaptive coil into a catheter; the magnetic control adaptive coil is pushed by a matched micro guide wire, or a syringe is filled with physiological saline and sufficiently degassed, and the magnetic control adaptive coil is uniformly pushed in the catheter; the application has good adaptability, can be uniformly distributed in all aneurysms, forms dense filling, and does not need to adjust the position of the catheter; moreover, the application has adjustable mechanical properties and swelling properties, can match different coils according to application scenarios, and thus improves the filling rate.

The invention provides an aneurysm embolism device and a preparation method thereof.The aneurysm embolism device comprises an implant, the implant is provided with an implant body and a spiral coil at least arranged at the near end of the implant body, and the implant body has a conveying state used for being conveyed and an implantation state used for blocking aneurysm; when the implant main body is in a conveying state, the implant main body is in a long filament shape, and the spiral coil is arranged on the implant main body in a sleeving manner; when the implant main body is in an implanted state, the implant main body is in a three-dimensional shape formed by spirally winding along the length direction of the implant main body, at least the near end of the implant is in a closed shape, and the spiral coil forms a closed barrier layer; the device has the advantages of simplicity, convenience and time saving in operation, small pushing resistance, high blocking rate and high safety.

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 discloses an electrocoagulation guidewire system for aneurysm embolization, which comprises a power supply, a positive hypotube and a positive platinum-iridium ring, a PTFE inner insulating layer is arranged between the positive hypotube and the positive platinum-iridium ring, a positive conductive wire is arranged inside the PTFE inner insulating layer, two ends of the positive conductive wire are electrically connected to the positive hypotube and the positive platinum-iridium ring respectively, a negative hypotube and a negative HHS tube are fixedly connected to the outside of the PTFE inner insulating layer, the positive conductive wire is connected to the positive pole of the power supply, the negative hypotube and the negative HHS tube are both connected to the negative pole of the power supply, the negative HHS tube is fixedly connected to the negative hypotube by welding, a same first epoxy glue is arranged between the positive hypotube and the negative hypotube, a same first PET heat shrink tube is fixedly connected to the outside of the positive hypotube and the negative hypotube, a PTFE heat shrink tube is fixedly connected to the outside of the first PET heat shrink tube, the invention is simple to operate, convenient to use and treat, and can meet the use requirements.

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.

The present invention relates to an aneurysm embolization device, comprising: a connecting wire, including a flexible section, an embolization section and a shaping section; the flexible section is located at one end of the connecting wire close to the distal end, the shaping section is located at one end of the connecting wire close to the proximal end, and the embolization section is located between the flexible section and the shaping section; the connecting wire is made of nickel-titanium alloy material; a guide spring is sleeved on the flexible section and connected to the connecting wire; the end of the guide spring close to the distal end is a hemispherical end; a developing wire is wound around the embolization section; a plurality of fiber pieces are all arranged on the developing wire and are arranged in sequence along the length direction of the connecting wire; a closing spring is sleeved on the shaping section; a first limiting ball is arranged on the shaping section of the connecting wire and is located at one end of the closing spring close to the proximal end. The above structure occupies a small space in the lumen of the microcatheter in a compressed state, and even if a fiber piece is arranged on the developing wire, it is still convenient to transport the aneurysm embolization device in the microcatheter. The present invention also relates to a conveying system.

The invention relates to an embolism system based on wide-neck aneurysm, and the embolism system comprises an embolism part which is made of shape memory polymer foam, and the embolism part sequentially comprises a compressed loading state, a limited expansion implantation state and a complete expansion preset state according to the relative volume from small to large; the anchoring arm is arranged in the embolism part in a penetrating mode, when the embolism part is in a preset state, the anchoring arm is embedded in the embolism part, and when the embolism part is in an implanted state, the end of the anchoring arm is exposed out of the embolism part and used for being anchored to the inner wall of the wide-neck aneurysm; the intervention catheter is used for accommodating the embolism piece in a loaded state; the delivery tube is arranged in the interventional catheter in a sliding and penetrating mode, the delivery tube and the embolism part have an opposite connecting state and an opposite releasing state, in the connecting state, the embolism part is located on the far end side of the exterior of the delivery tube, and in the releasing state, the embolism part is allowed to be separated from the delivery tube so as to be released into the wide-neck aneurysm.

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 invention relates to the field of aneurysm embolism instruments, in particular to an aneurysm embolism device which comprises a first embolism body, a second embolism body and a third embolism body. The second embolism body comprises a sealing net and a second embolism wire connected with one end of the sealing net; one end of the second embolism wire away from the sealing net is slidably connected with one end of the first embolism wire away from the supporting net; the limiting ball is connected with the sealing net through a connecting wire; when the aneurysm embolism device is in an expanded state, the supporting 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 embolism wires and the second embolism wires are elastically deformed and jointly form an embolism supporting body, and the embolism supporting body is used for filling the space between the supporting net and the sealing net. The invention also relates to a conveying system.

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.