93 results about "Vascular occlusion" patented technology

Systems and methods for removal of thrombus from a blood vessel in a body of a patient are disclosed herein. The method can include: providing a thrombus extraction device including a proximal self-expanding member formed of a unitary fenestrated structure, a distal substantially cylindrical portion formed of a net-like filament mesh structure, and an inner shaft member connected to a distal end of the net-like filament mesh structure; advancing a catheter constraining the thrombus extraction device through a vascular thrombus, deploying the thrombus extraction; retracting the thrombus extraction device to separate a portion of the thrombus from the vessel wall and to capture the portion of the thrombus within the net-like filament mesh structure; and withdrawing the thrombus extraction device from the body to remove thrombus from the patient.

Systems and methods for removal of thrombus from a blood vessel in a body of a patient are disclosed herein. The method can include: providing a thrombus extraction device including a proximal self-expanding member formed of a fenestrated structure, a substantially cylindrical portion formed of a net-like filament mesh structure having a proximal end coupled to a distal end of the fenestrated structure; advancing a catheter constraining the thrombus extraction device through a vascular thrombus, deploying the thrombus extraction device by stacking a portion of the net-like filament mesh structure outside of the catheter by distally advancing the self-expanding member until the self-expanding member is beyond a distal end of the catheter; retracting the self-expanding member to unstack the portion of the net-like filament mesh structure and to capture the portion of the thrombus; and withdrawing the thrombus extraction device from the body.

Systems and methods for the intravascular treatment of clot material within a blood vessel of a human patient are disclosed herein. A device in accordance with embodiments of the present technology can include, for example, a plurality of interconnected struts forming a unitary structure having a proximal portion and a distal portion. The struts can form a plurality of first cells in the proximal portion and a plurality of second cells, smaller than the first cells, in the distal portion. The device can be pulled against clot material within a blood vessel to engage, disrupt, and / or capture the clot material.

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.

A blood vessel blocking spiral device comprises an air inflation device and a pinch-off device connected with the air inflation device. The pinch-off device comprises a spiral guide wire and a strip-shaped inflatable air bag attached to the spiral guide wire, and an annular strip-shaped contact surface is formed after the air bag is inflated; in each spiral of the spiral guide wire, the diameter of each circle is 2.5-3.0 cm, and the distance between every two circles is 0.5-1.5 cm. And the strip-shaped inflatable air bag and the guide wire are arranged in parallel or annularly wound on the guide wire.

The invention provides a vascular occlusion suction system and laser ablation equipment, and belongs to the technical field of medical instruments.The suction system comprises a suction catheter, a collecting device, a negative pressure generating device, a flow sensing device and a control device.The first end of the suction catheter acts on the application position of a target object; an inlet of the collecting device is communicated with the second end of the suction catheter to form a first channel of the suction channel, the negative pressure generating device is communicated with an outlet of the collecting device to form a second channel of the suction channel, the flow sensing device is used for monitoring the real-time flow of the suction channel, and the control device is configured to respond to gear selection operation. The initial suction gear is determined, the negative pressure generation device is controlled to work at the initial suction gear, and the gear adjustment prompt instruction is output according to the real-time flow, so that an operator can conveniently carry out gear adjustment on the negative pressure generation device subsequently or directly carry out automatic gear adjustment on the negative pressure generation device; and the capacity of intelligently adjusting the suction negative pressure of the suction system is effectively 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 lithotripsy device for tunneling through vascular occlusions comprises a tunneling catheter including a tunneling catheter shaft having a distal end and a proximal end. A tunneling probe is disposed on the distal end of the tunneling catheter shaft. The tunneling probe has a pair of electrodes; each electrode being operatively connected to an electrical lead within the tunneling catheter shaft. The leads are configured for operative connection to an external pulse generator. Activation of an external pulse generator operatively connected to the leads causes repeated electrical discharges between the electrodes. When the electrodes are an in a fluid, the repeated electrical discharges produce repeated hydraulic shock waves in the fluid directed away from the electrical discharges. When the repeated hydraulic shock waves strike calcified tissue, the calcified tissue is broken into a modified plaque. The modified plaque has a lower resistance to mechanical dislocation that the original calcified tissue.

Embodiments of the present invention provide an improved vascular occlusion device for occlusion of a passageway, cavity, or the like. According to one embodiment, a medical device for occluding a left atrial appendage is provided. The medical device includes a first portion having at least one plane of occlusion that is configured to be positioned outside of the left atrial appendage, and a second portion having at least one plane of occlusion that is configured to be at least partially positioned within a cavity defined by the left atrial appendage.

The invention provides a radial artery compressor for critical patients in the department of cardiology, and belongs to the technical field of medical instruments. Comprising a fixing plate, and a bandage is arranged on the outer side of the fixing plate; the device further comprises a pressing assembly, the pressing assembly is used for conducting pressing hemostasis on a hemostasis point at the radial artery of the patient, and the pressing assembly is connected with the fixing plate. The pressing assembly comprises a rotary knob rotationally connected into the fixing plate, a rotary rod is in threaded connection with the interior of the rotary knob, a connecting plate is fixedly connected to the bottom end of the rotary rod, sliding rods are symmetrically and slidably connected into the two ends of the connecting plate, and the two ends of the sliding rods penetrate through the connecting plate and are fixedly connected with pressing heads. The massaging assembly is additionally arranged on the pressing assembly, so that the hemostasis point can be intermittently pressed and loosened, the position of the massaging assembly does not need to be adjusted, massaging can be directly carried out after loosening, the operation process is simplified, secondary wearing is avoided, it can be ensured that the hemostasis point is continuously pressed without a window period, and meanwhile risks such as thrombosis or vascular occlusion are prevented.

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.

The invention relates to the technical field of medical vascular hardeners, in particular to a technological method for producing a vascular hardener. The vascular hardening agent is prepared from 10%-15% w / v of modified ethylene-vinyl alcohol copolymer, 10%-15% w / v of absolute ethyl alcohol, 5%-10% w / v of modified hyaluronic acid, 1%-5% w / v of glycerinum, 1%-2% w / v of sodium glucosamine carboxylate and the balance of 0.9% sodium chloride aqueous solution. The farthest distance of the vascular hardening agent in a simulated blood vessel ranges from 39.4 cm to 40.7 cm, the time of 4 cm before retreating ranges from 1.98 min to 2.31 min, and the vascular hardening agent achieves a more accurate and lasting vascular occlusion effect through cooperation of multiple components. In addition, the blood vessel hardener is simple in production process, raw materials are cheap and easy to obtain, the production cost is reduced, and more patients can be benefited.

The application provides a radial artery compressor for critical patients in a cardiology department, and belongs to the technical field of medical devices. The radial artery compressor comprises a fixing plate, a bandage is arranged on the outer side of the fixing plate, a pressing assembly is further arranged, the pressing assembly is used for pressing and stopping bleeding at a hemostatic point of a radial artery of a patient, and the pressing assembly is connected with the fixing plate. The pressing assembly comprises a knob rotatably connected in the fixing plate, a rotating rod is threadedly connected in the knob, a connecting plate is fixedly connected to the bottom end of the rotating rod, slide rods are symmetrically and slidably connected in the connecting plate, and the two ends of the slide rods penetrate through the connecting plate and are fixedly connected with compression heads. The application adds a pressing and rubbing assembly to the pressing assembly, intermittent compression and release of the hemostatic point can be realized, the position of the pressing and rubbing assembly does not need to be adjusted, the pressing and rubbing can be directly performed after release, the operation process is simplified, secondary wearing is avoided, the continuous pressing of the hemostatic point without an empty window period can be ensured, and risks such as thrombosis and vascular occlusion can be prevented.

Vascular occluders may comprise containers defining a container space. The container space may receive a vascular occlusion coil. The vascular occlusion coil may have an elastically relaxed configuration comprising a series of arced segments arranged in two or more different orientations. The vascular occlusion coil may comprise a cylindrical spiral body with a core member provided therein. The vascular occlusion coil may transition from a secondary structure to a tertiary structure as it is dispensed into the container space.

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.”

Systems and methods can remove material of interest, including blood clots, from a body region, including but not limited to the circulatory system for the treatment of pulmonary embolism (PE), deep vein thrombosis (DVT), cerebrovascular embolism, and other vascular occlusions.

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.

The vascular occlusion assembly comprises a vascular occlusion device configured to be placed within an aneurysm sac. The vascular occlusion device assumes a delivery configuration when confined within a delivery catheter and a deployed configuration when released from the delivery catheter into the aneurysm sac. The vascular occlusion assembly further comprises a delivery wire having a distal end to which the vascular occlusion device is attached. The delivery wire has an electrolytically separable joint proximal to the vascular occlusion device. At least a portion of the electrolytically separable joint is made of molybdenum (Mo) or an alloy thereof.

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.

The invention discloses a balloon dilatation catheter, and relates to the technical field of medical instruments. The balloon dilatation catheter comprises a balloon main body, an inner cavity tube and a wire harness winding structure, wherein the inner cavity tube penetrates through the balloon main body; the sacculus main body comprises an inner-layer sacculus and an outer-layer sacculus; the outer-layer balloon is arranged around the inner-layer balloon; the wire harness winding structure comprises a middle reinforcing structure and an inner cavity protection structure, the middle reinforcing structure is arranged between the inner-layer balloon and the outer-layer balloon and used for reinforcing the compression strength of the balloon body, and the inner cavity protection structure is arranged around the periphery of the inner cavity tube and used for protecting the inner cavity tube. The inner cavity protection structure is used for preventing the inner cavity tube from collapsing to surround the guide wire in the inner cavity tube. The structure of the balloon is improved, so that the balloon has higher pressure resistance, the thickness of the balloon is reduced, the folding and winding capacity of the balloon is improved, the passing ability of the balloon in a blood vessel is improved, and the operation difficulty is reduced. In addition, the present invention improves the effect of treating acute vascular occlusion diseases.