51 results about "Vascular occlusion" patented technology

The invention discloses a medical image optimization method and system based on vascular branch selective blurring. The method comprises the following steps: carrying out preprocessing and blood vessel enhancement on a three-dimensional angiography DICOM image; performing precise blood vessel segmentation by using an encoder-decoder network comprising a wide activation and residual cavity space pyramid module; identifying an interference branch which shields the target blood vessel structure at a specific working angle through blood vessel topology analysis; selective blurring repair is performed on the interference branches based on a Poisson equation and a bidirectional convolution LSTM to generate an optimized image which is visually unobstructed and keeps topological continuity. And a safety mechanism of virtual-real combined display and multi-angle plan planning is introduced, so that the reliability of surgical navigation is ensured. And finally, integrating the optimized 3D blood vessel model to a radiography system supporting real-time synchronization, and using the 3D blood vessel model as a road map. The clinical problem that the optimal working angle cannot be used due to blood vessel shielding can be effectively solved, and the precision and safety of an endovascular interventional operation are remarkably improved.

Disclosed herein are systems and methods for endovascular treatment of clot material within a blood vessel of a human patient. In one embodiment, a system includes a coring element for coring and separating the clot material. The coring element may include a single structure having a first region, a second region, a third region, and a fourth region. The first region is adjacent to a proximal portion of the unitary structure and includes a first mouth configured to core and separate the clot material. The second region is distal to the first region, is substantially tubular, and includes a first plurality of interconnected struts. The third region is distal to the second region and includes a second mouth configured to core and separate a vascular thrombus. The fourth region is distal to the third region, is substantially tubular, and includes a second plurality of interconnected struts.

The present invention provides a composition for reducing or eliminating vascular occlusion caused by hyaluronic acid soft tissue dermal fillers. [Solution] This disclosure provides for compositions comprising hyaluronidase, apparatus for housing such compositions, and methods and uses of such compositions and apparatus for reducing or eliminating hyaluronic acid-induced blockages in one or more blood vessels supplying an individual's eye; methods and uses of such compositions and apparatus for reducing or inhibiting vascular occlusion of an individual's eye; and methods and uses of such compositions and apparatus for reducing or inhibiting hyaluronic acid-induced vision loss in an individual.

The invention discloses a blood vessel blocking and flow transferring device and medical equipment, and relates to the technical field of medical equipment, and the blood vessel blocking and flow transferring device comprises a catheter, a blocking piece, an expandable balloon and a fluid pump. Two ends of the catheter are respectively placed into two incisions of the blood vessel, and the catheter is used for communicating blood of the two incisions of the blood vessel; the blocking piece is arranged on the catheter, and the blocking piece is used for blocking the catheter in a first state and opening the catheter in a second state; the expandable balloons are arranged at the two ends of the catheter, and the balloons are used for being placed into a blood vessel through an incision so as to fix the catheter to the blood vessel and further used for taking out obstructions from the blood vessel; the fluid pump is communicated with the balloon, and the fluid pump is used for injecting fluid into the balloon, so that the balloon is in a preset expansion state. According to the blood vessel blocking and flow turning device, the problem that in the prior art, function integration of precise blocking, temporary flow turning and synchronous thrombus taking cannot be achieved in the same device is solved.

A hinged forceps for use during surgical procedures. A hinged surgical forceps for temporarily holding, clamping, and positioning patient tissue, such as a vascular forceps for occluding blood vessels. The hinged surgical forceps facilitate adjustment of the shape of the jaws, for example, to improve vascular occlusion during surgery. A method of temporarily occluding a blood vessel includes providing a hinged forceps as described herein, configuring the shape of the jaws of the forceps, and positioning the forceps to occlude the blood vessel.

A vascular occlusion catheter is configured for insertion, and at least partial inflation, into a targel blood vessel. The vascular occlusion catheter includes a proximal catheter shaft, a distal catheter shaft, and a semi-compliant or non-compliant occlusion balloon mounted at a proximal side thereof to the proximal catheter shaft and mounted at a distal side thereof to the distal catheter shaft. A central catheter shaft extends through the proximal catheter shaft, the occlusion balloon and into the distal catheter shaft. The central catheter shaft is constructed as the primary load-bearing chassis of the vascular occlusion catheter. The occlusion balloon defines a blown diameter between approximately twenty-five and approximately thirty-five millimeters and the occlusion balloon defines a double-wall thickness of between approximately 0.0003″ and approximately 0.0020″.

A laser atherectomy device includes a sensor-equipped light transmission conduit for monitoring physical properties of a laser application site. An integrated control unit utilizing data from the sensors is provided to optimally adjust laser energy parameters and safely and efficiently ablate vascular occlusions.

A catheter for centrally crossing an occluded blood vessel includes a catheter body having a distal end, a proximal end, and a central passage. A rotatable drive shaft extending through the central passage and has a distal end, a proximal end, and a central lumen. A cutting tip is mounted on the distal end of the rotatable drive shaft and configured to cut through occlusive material when rotated. A plurality of spiral or other flat springs is disposed circumferentially about a distal portion of the catheter body to maintain centering of the catheter and form a passage as the catheter is advanced through a chronic total occlusion.

Methods for performing non-invasive thrombolysis with ultrasound using, in some embodiments, one or more ultrasound transducers to focus or place a high intensity ultrasound beam onto a blood clot (thrombus) or other vascular inclusion or occlusion (e.g., clot in the dialysis graft, deep vein thrombosis, superficial vein thrombosis, arterial embolus, bypass graft thrombosis or embolization, pulmonary embolus) which would be ablated (eroded, mechanically fractionated, liquefied, or dissolved) by ultrasound energy. The process can employ one or more mechanisms, such as of cavitational, sonochemical, mechanical fractionation, or thermal processes depending on the acoustic parameters selected. This general process, including the examples of application set forth herein, is henceforth referred to as “Thrombolysis.”

An impulsive wave device for treating a vascular occlusion is described. The impulsive wave device includes an outer covering and an inner member connected at a distal end of the device. First and second conductive wires extend along a length of the device within a volume between the outer covering and the inner member. A conductive launch band surrounds the ends of the first and second conductive wires to form a first spark gap between the end of the first conductive wire and the launch band and a second spark gap between the end of the second conductive wire and the launch band. First and second impulsive waves can be initiated from the first and second spark gaps when the volume is filled with a conductive fluid and a high voltage pulse is applied across the first and second conductive wires.

The invention discloses a bifurcated aneurysm stent structure. The structure comprises a far-end anchoring stent; a proximal anchoring stent; the skeleton is arranged to be of a bent structure, the two ends of the skeleton are connected with the far-end anchoring stent and the near-end anchoring stent respectively, and the far-end anchoring stent and the near-end anchoring stent can be matched to limit the skeleton to a to-be-treated position in a blood vessel; the covering film is connected to the skeleton and covers the skeleton in the bending direction of the skeleton, and the skeleton and the covering film are matched to support the position to be treated in the blood vessel. According to the invention, a tumor neck opening can be effectively blocked, the blood flow of a blood vessel can be kept smooth, the thrombosis probability is reduced, the problem of vascular occlusion is avoided, and the occurrence of ischemic events is reduced.

The utility model discloses a tissue separation pad beneficial to microvascular anastomosis, which comprises a pad, an air cushion is arranged on the inner wall of the pad, a support is arranged in the air cushion, two suture pads are arranged above the pad, and the two suture pads can be attached to each other. The utility model relates to the technical field of vascular anastomosis, in particular to a tissue separation pad beneficial to microvascular anastomosis, which can play a role in physically separating tissues around a blood vessel from a lumen of the blood vessel through the matching of a gasket, an air cushion, a winding rope, a titanium alloy layer and a bracket, and provides a relatively pure anastomosis environment. In the process, some easily-coagulated substances, fat particles, vascular adventitia and other tissues are effectively prevented from entering a vascular lumen in the anastomosis process, vascular embolism is prevented, and the tissue separation pad beneficial to microvascular anastomosis can be expanded outwards all the time by means of the elasticity of the support, so that the tissue separation pad is more stable. And the phenomenon of vascular occlusion caused by extrusion of the tissue separation pad beneficial to microvascular anastomosis is avoided.

The invention relates to the technical field of interventional medical instruments, and discloses a handheld ultrasonic system for treating vascular occlusion and a using method.The handheld ultrasonic system for treating vascular occlusion comprises a guide wire used for moving to an internal occlusion part of a blood vessel along the blood vessel, and further comprises a positioning guide wire and a catheter, the positioning guide wire is used for entering the main branch from the side branch to perform reverse puncture on the artery plaque, a positioning guide wire cavity is formed in the catheter, the positioning guide wire can move along the positioning guide wire cavity, a positioning guide wire outlet communicated with the positioning guide wire cavity is formed in the catheter, a balloon is arranged at the far end of the catheter, and the balloon can synchronously move with the catheter in a contraction state; the balloon is additionally arranged at the front end of the catheter, the balloon can be matched with the blood vessel wall or directly form a channel in the balloon in the expansion state, the channel restrains the guide wire to move along the channel, an inlet of the channel is communicated with the guide wire catheter, an outlet of the channel faces the artery plaque, and reverse puncture of the artery plaque is completed.

Images of an individual obtained using perfusion-based or diffusion-based imaging techniques can be analyzed to identify areas of the individual's brain that have had their blood supply disrupted. The images can be used to generate an alert indicating disruption of blood flow to one or more areas of the individual's brain. The images can be used to identify vascular segments (e.g., M1, M2, M3, M4, ...) and branches (MCA, ACA, PCA) in the individual's brain in which abnormalities may exist.

A vascular occlusion catheter is configured for insertion, and at least partial inflation, into a target blood vessel. The vascular occlusion catheter includes a proximal catheter shaft, a distal catheter shaft, and a semi-compliant or non-compliant occlusion balloon mounted at a proximal side thereof to the proximal catheter shaft and mounted at a distal side thereof to the distal catheter shaft. A central catheter shaft extends through the proximal catheter shaft, the occlusion balloon and into the distal catheter shaft. The central catheter shaft is constructed as the primary load-bearing chassis of the vascular occlusion catheter. The occlusion balloon defines a blown diameter between approximately twenty-five and approximately thirty-five millimeters and the occlusion balloon defines a double-wall thickness of between approximately 0.0003" and approximately 0.0020".

1. Name of the product in this design: Vascular blocking band. 2. Purpose of this design: This design is used for hepatic blood flow blocking. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

Systems and methods are presented herein for detecting different engagement conditions of a separator instrument of a system. Processing circuitry is used to establish a baseline of one or more operational parameters for the separator instrument. At least one deviation from the established one or more baseline operational parameters of the separator instrument is identified using the processing circuitry. The processing circuitry is used to determine that the identified at least one deviation corresponds to at least one engagement condition of the separator instrument. An action is caused to be performed based on the determining by the processing circuitry.

Disclosed herein are devices and methods for tunneling through an occlusion. The devices can include a handle, a shaft, and a tip. The shaft can be surrounded by a centering cage. The tip can have one or more cutting loops. Tunneling can be done by drilling, cutting, penetrating, pulverizing, blunt dissection or any combination thereof. Tunneling can use a pushing force, rotation, or both. The vessel wall can avoid being stretched, extended, or expanded. The vessel wall can avoid being dissected, cut, perforated, or damaged.

A vascular occlusion assembly includes a vascular occlusion device configured for implantation in an aneurysm sac, the vascular occlusion device having a delivery configuration when confined within a delivery catheter and having a deployed configuration when released from the delivery catheter into the aneurysm sac. The vascular occlusion assembly also includes a delivery wire having a distal end secured to the vascular occlusion device. The delivery wire has an electrolytically disconnectable junction adjacent the vascular occlusion device. At least a portion of the electrolytically disconnectable joint is composed of molybdenum (Mo) or a molybdenum alloy.

The invention relates to a vascular occlusion system based on a shape memory polymer material, and the system comprises a plugging block which is made of shape memory polymer foam and has a loading state, an implantation state and a preset state, and the plugging block is internally provided with a threading channel; the interventional catheter is used for accommodating the plugging block in the loading state and is suitable for interventional delivery; the delivery shaft extends in the interventional catheter, the near end of the delivery shaft is an operation end, the far end of the delivery shaft is provided with a connecting section, the connecting section extends into the threading channel and is clamped by the plugging block in the loading state, and when the plugging block is released, the plugging block is released. The connecting section and the plugging block extend out of the interventional catheter and are pre-positioned at an implantation position, and after the plugging block expands to an implantation state and is positioned at the implantation position, the connecting section is moved out. By improving the structure of the plugging block and matching the plugging block with the delivery shaft, the operation safety can be improved, and the treatment effect can be guaranteed.

Tissue-mounted devices and methods for monitoring a thermal transport property (e.g., thermal conductivity, thermal diffusivity, heat capacity) of tissue, such as skin, are disclosed. The devices conformally mount to the tissue and comprise one or more thermal actuators and a plurality of sensors. The actuator applies heat to the tissue and the sensors detect a spatio temporal distribution of a physiological tissue parameter or physical property resulting from the heating. This spatio temporal information may be correlated with a rate, velocity and / or direction of blood flow, the presence of a vascular occlusion, circulation changes due to inflammation, hydration level and other physiological parameters.

Systems and methods are presented herein for detecting different engagement conditions of a separator instrument of a system. Processing circuitry is used to establish a baseline of one or more operational parameters for the separator instrument. At least one deviation from the established one or more baseline operational parameters of the separator instrument is identified using the processing circuitry. The processing circuitry is used to determine that the identified at least one deviation corresponds to at least one engagement condition of the separator instrument. An action is caused to be performed based on the determining by the processing circuitry.

Dilator hub for a delivery system for a vascular occlusion device. 1.1) Perspective view; 1.2) Perspective view; 1.3) Perspective view; 1.4) Perspective view; 1.5) Top view; 1.6) Bottom view; 1.7) Left side view; 1.8) Right side view; 1.9) Front view; 1.10) Rear view

The invention provides a blood vessel occlusion stent, and belongs to the technical field of medical instruments. The blood vessel blocking stent comprises a stent body, a blood coagulation promoting component and a conveying unit, the stent body is of a cage-shaped structure, is formed by weaving metal wires, has a radial contraction state and an expansion state and is used for conforming to and blocking a target blood vessel in the expansion state, and a flow blocking unit is arranged in the stent body in the direction perpendicular to the axial direction. The blood flow blocking module is used for blocking blood flow; the blood coagulation promoting part is arranged in the stent main body to accelerate blood coagulation near the stent main body; the conveying unit is used for conveying the stent main body to a target position in a blood vessel; during working, the conveying unit conveys the stent body in a contracted state to a target position and then withdraws, and the stent body automatically expands to block blood vessels so as to block blood flow; the plug spring ring is mainly used for solving the technical problem that an existing plug spring ring cannot achieve immediate plugging.

This application discloses a method and device for predicting first-pass recanalization in preoperative ADAPT aspiration, relating to the field of data processing for AIS patients. The method includes: acquiring preoperative examination images of the patient to be evaluated, and performing vascular occlusion segment localization, SVS candidate region determination, and thrombus ROI generation to obtain the thrombus ROI, and then extracting the radiomics features of the thrombus ROI; inputting the radiomics features of the thrombus ROI into a pre-trained machine learning-based prediction model to predict the probability of first-pass recanalization. This application obtains the thrombus ROI of the occluded segment in the patient's blood vessel through vascular occlusion segment localization, SVS candidate region determination, and thrombus ROI generation, and then extracts radiomics features that characterize "aspiration difficulty / device response," thereby more accurately predicting the probability of first-pass recanalization in ADAPT aspiration.

The present disclosure features devices, systems, and kits for vascular occlusion and methods of use thereof.

The invention discloses a catheter rehemorrhagic disease and vascular occlusion interventional therapy device integrated with pressure sensing, and belongs to the technical field of vascular interventional therapy, and the catheter rehemorrhagic disease and vascular occlusion interventional therapy device integrated with pressure sensing comprises a pressure pump for controlling pressure, a pressure output port of the pressure pump is in through connection with a stamping pipe through a hose, the other port of the stamping pipe is in through connection with a catheter, a guide wire is in through connection in the catheter in the central axis direction, the end, away from the stamping pipe, of the catheter is sleeved with a balloon, and a liquid outlet is formed in the area, located in the balloon, of the catheter. Embedded circular grooves are symmetrically formed in the positions, located on the two sides of the balloon, of the outer portion of the catheter, and pressure sensors are installed in the embedded circular grooves in an embedded mode; the vascular treatment intervention device can drive the pressure sensor to move and be attached to the inner wall of a blood vessel when the balloon is controlled to expand to block the blood vessel, so that the pressure change is accurately measured, and the blocking treatment effect is improved.

This application discloses a method and related products for training a detection model for cerebral vascular occlusion detection. The method includes: performing bone removal operations on CT perfusion imaging data to obtain target image data containing brain tissue and blood vessels; annotating the vascular occlusion region in the target image data to obtain a three-dimensional occlusion region label; extracting a blood flow arrival time map based on the CT perfusion imaging data; extracting a vascular region feature volume after weighted fusion under blood flow arrival time gating based on the target image data and the blood flow arrival time map; inputting the vascular region feature volume into the detection model for cerebral vascular occlusion detection; and calculating a loss function based on the three-dimensional occlusion region label to train the detection model for cerebral vascular occlusion detection. Using the solution of this application, the accuracy, robustness, and clinical applicability of occlusion detection can be improved.

A system and method is provided for generating ultrasound at the tip of an intravascular catheter. This may be used for the treatment of vascular occlusions, including chronic total occlusions (CTOs) and thrombotic occlusions (e.g., deep vein thrombosis, stroke, myocardial infarction). For instance, the systems and methods may be used to induce cavitation to enhance the enzymatic degradation of a vascular occlusion. In some configurations, the approach employs a hollow cylindrical transducer, electrically stimulated in the radial direction at a frequency corresponding to the length mode excitation, thereby projecting ultrasound forwards past the catheter tip. This design overcomes electrical impedance issues for the generation of low frequencies with a smaller diameter transducer capable of negotiating a coronary artery. The hole within the transducer may accommodate a guidewire to facilitate its placement adjacent to the proximal portion of the occlusion.

This application relates to the field of interventional medical technology, and in particular to a vascular occlusion device and its method of use. This vascular occlusion device eliminates the need for a locator during use; it accurately determines the location of the blood vessel to be occluded simply by checking for blood flow from the return port. This precise determination of the distance between the fixator inserted into the skin and the blood vessel meets the needs of emergency patients, reduces the number of steps required by the surgeon, and greatly improves surgical efficiency. By reciprocating the rotation of a wrench, the delivery tube moves back and forth, adjusting the angle of the anchor plate to ensure it is fully exposed within both the inner and outer delivery tubes. This guarantees that the anchor plate will adhere tightly to the vessel wall during subsequent vascular occlusion, fundamentally preventing abnormal blood flow and thrombosis, thus ensuring sufficient safety in the vascular occlusion procedure.