174 results about "Vascular occlusion" patented technology

Described herein is a shock wave device for the treatment of vascular occlusions. The shock wave device includes an outer covering and an inner member inner connected at a distal end of the device. First and second conductive wires extend along the length of the device within the volume between the outer covering and the inner member. A conductive emitter band circumscribes the ends of the first and second wires to form a first spark gap between the end of the first wire and the emitter band and a second spark gap between the end of the second wire and the emitter band. When the volume is filled with conductive fluid and a high voltage pulse is applied across the first and second wires, first and second shock waves can be initiated from the first and second spark gaps.

A system and method for managing an occlusion, such as a blood clot, within a lumen or passageway of a patient. More particularly, a system and method for rapidly restoring blood flow through an occlusion including a self-expanding, tubular member through which blood may flow when in an expanded state. The tubular member has a structure configured to engage the occlusive material, thereby allowing for extraction of at least a portion of the occlusive material. The system may further employ a material extraction member that is deployed distally of the tubular member.

The invention relates to the technical field of health status assessment, in particular to a cardiovascular disease layered early warning system, which is characterized in that blood vessel compliance and pulse wave velocity are extracted, arterial dilation capacity is measured, blood vessel elasticity is calculated, blood perfusion distribution is detected, and abnormal vasoconstriction is classified on the basis of a hemodynamic state and a heart electrical activity state; in combination with the thickness of the blood vessel wall and the blood vessel stenosis rate, the plaque deposition condition is analyzed, the arteriosclerosis score is calculated, the thrombosis tendency is detected, the local blood flow blocking degree is quantified, the isolation forest algorithm is adopted, the blood flow dynamic change is calculated, the heart rhythm abnormality is analyzed, the acute vascular occlusion probability is measured, and the sudden heart rhythm abnormality risk is evaluated. And based on a gradient boosting tree algorithm, screening high-risk cases, matching medical intervention measures, setting a risk buffer mechanism, adjusting an individual health management strategy, and optimizing a cardiovascular risk hierarchical early warning system.

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.

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 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. The capture system can include a tubular body comprising a first end, a second end, and an axial length therebetween, the first end having an opening and a capture guide. The capture system can include one or more tensioners coupled to the capture guide. The tubular body has a first configuration in which the first end and the capture guide are expanded while the second end and a majority of the tubular body remains compressed. The tubular body is transformable to a second configuration by application of tension by the tensioners. The catheter can remove a large volume of clot. In some embodiments, the body of the catheter or the funnel tip is expandable. The catheter can include a dilator and a peel-away cover.

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.

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.

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.

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 utility model relates to a blood vessel closing system capable of removing laparoscopic surgery view smoke, and belongs to the technical field of medical instruments. The problems that when a traditional blood vessel closing system is used in a laparoscopic surgery, an aspirator needs to independently occupy a Trocar channel to suck smoke, so that the smoke suction effect is poor, and the surgery time is long are solved. Comprising a main body, a tube body assembly and a suction device connecting tube, the tube body assembly is installed at the front end of the main body, the suction device connecting tube is connected to the rear end of the main body, and the suction device connecting tube is used for being connected with a negative pressure suction device; the tube body assembly comprises a forceps shaft, a forceps head and a suction tube, and the other end of the forceps shaft is provided with the forceps head; the suction tube is sleeved outside the forceps shaft; the inner wall of the suction tube and the outer wall of the forceps shaft form a suction channel; the front end of the suction tube is provided with a smoke suction port. The utility model is used for closing blood vessels in the laparoscopic surgery and sucking smoke generated in the surgery.

Described herein is a shock wave device for the treatment of vascular occlusions. The shock wave device includes an outer covering and an inner member inner connected at a distal end of the device. First and second conductive wires extend along the length of the device within the volume between the outer covering and the inner member. A conductive emitter band circumscribes the ends of the first and second wires to form a first spark gap between the end of the first wire and the emitter band and a second spark gap between the end of the second wire and the emitter band. When the volume is filled with conductive fluid and a high voltage pulse is applied across the first and second wires, first and second shock waves can be initiated from the first and second spark gaps.

A vascular occlusion catheter may be employed for at least partial occlusion of a target vessel. The vascular occlusion catheter system includes a proximal catheter shaft having at least one internal lumen, and a distal catheter shaft terminating in an atraumatic tip. An occlusion balloon is sealingly mounted to the proximal and distal catheter shafts. A central catheter shaft extends through the proximal catheter shaft, the occlusion balloon and into the distal catheter shaft. The proximal catheter shaft is secured to the central catheter shaft on a proximal side of the occlusion balloon and the distal catheter shaft is secured to the central catheter shaft on a distal side of the occlusion balloon. The occlusion balloon, the proximal catheter shaft and the distal catheter shaft have a greatest outer diameter of less than seven French (7 Fr) in an uninflated condition.

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.

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.

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.

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.