213 results about "Thrombus aspiration" patented technology

The invention discloses a thrombus excision system. An embolus is extracted through a mechanical embolus extraction device, a blood vessel is dredged, and revascularization of the blood vessel is achieved. A saccule guide catheter is put at the near end of the embolus part when the embolus is extracted, blood flow is temporarily blocked, and thus a fine crushed embolus generated in the embolus extraction process is prevented from being flushed to the far end of the blood vessel; meanwhile, for a relatively large embolus, a part of thrombus can also be sucked by virtue of the saccule guide catheter, and then the residual thrombus can be extracted by virtue of a thrombus exsector. The thrombus exsector, the saccule guide catheter and a delivery microcatheter are arranged on the thrombus excision system disclosed by the invention, wherein the thrombus exsector is used as a main component, an excision spring is arranged, and the release state of the excision spring is a conical spiral state. Compared with the prior art, the thrombus excision system has the advantages that the thrombus exsector is very soft, the minimal through size is 0.014' (0.36mm), the thrombus exsector can easily enter a cerebral vessel, a near-end protection technology is adopted in the operation process, and thrombus suction is combined with mechanical embolus extraction, so that the success rate of the operation is improved, and the complications are reduced.

The invention discloses an intelligent thrombus suction and cutting system, and belongs to the field of medical instruments. According to the system, the design of double pressure sensors and the intelligent pressure feedback control technology are adopted, and the suction state (blood suction, thrombus suction or complete blockage) is accurately recognized by monitoring pressure changes in a negative pressure pump pipeline and a suction catheter in real time and combining historical data analysis. The system automatically adjusts parameters of a pipeline control valve, a negative pressure pump, a peristaltic pump and the like according to the parameters, and intelligent optimization control over the suction process is achieved. The innovative integrated design of the double-cavity catheter integrates the functions of suction and thrombus breaking, when the complete blockage state is judged, the thrombus breaking program can be automatically or manually started, thrombus is quickly broken through high-speed liquid impact or thrombolysis medicine injection, and long-time suction catheter blockage is effectively prevented. The system obviously improves the thrombus aspiration efficiency, reduces the blood loss amount of a patient, optimizes the operation process, and has a good clinical application prospect.

The thrombus aspiration catheter with the high stability comprises a hollow catheter body, one end of the catheter body is provided with a negative pressure end connected to an external negative pressure component and a sealing end connected with a hollow guide wire tube, and the guide wire tube penetrates through the sealing end and extends to an aspiration end arranged at the other end of the catheter body. A negative pressure hole is formed in the side, close to the negative pressure end, of the guide wire tube, the end, close to the suction end, of the guide wire tube is connected with a thrombus breaking component, an adsorption part is arranged at the joint of the thrombus breaking component and the guide wire tube, a plurality of adsorption holes are formed in the circumferential direction of the adsorption part, and the negative pressure hole is connected with the adsorption holes through a connecting channel arranged in an inner cavity of the guide wire tube. Therefore, thrombus broken by the thrombus breaking component can be adsorbed conveniently. After the thrombus breaking component rotates, a large thrombus can be broken into a small thrombus, the large thrombus is prevented from blocking a catheter and a blood vessel, the thrombus suction effect is improved, the thrombus suction stability of the catheter is improved, and the suction operation efficiency is improved.

Systems and methods include positioning of a catheter lumen in a first position with respect to a thrombus, the catheter lumen defined by a catheter, initiating of evacuation of a tubing lumen, where the tubing lumen is not in fluid communication with the catheter lumen, determination that a pressure within the tubing lumen is equal to or less than a target aspiration pressure, and, in response to the determination that the pressure within the tubing lumen is equal to or less than a target aspiration pressure, automatic establishment of fluid communication between the tubing lumen and the catheter lumen.

The invention relates to a thrombus aspiration system and a control method of the thrombus aspiration system, relates to the technical field of medical equipment, and can improve the thrombus aspiration efficiency. An intelligent control module in the system is configured to execute the steps of determining the pressure difference between the near end and the far end according to pressure data collected by a first pressure sensor and pressure data collected by a second pressure sensor, determining the pressure difference change rate of the pressure difference, and determining the pressure difference change rate of the pressure difference according to flow data collected by a flow sensor. Determining the flow change rate of the blood flow in the suction catheter; according to the pressure difference change rate and the flow change rate, the medium type corresponding to the current suction medium of the suction guide pipe is determined; when the suction medium is blood, intermittent suction is performed on the blood according to a preset frequency when a valve in the air pressure state conversion module is in a closed state; and when the suction medium comprises thrombus of a target volume, determining a target frequency corresponding to the target volume, and opening and closing a valve in the air pressure state conversion module for multiple times according to the target frequency while keeping suction.

The embodiment of the invention provides a thrombus aspiration device and method, and the thrombus aspiration device comprises a sheath tube; the supply tube penetrates through the sheath tube and is suitable for providing a passage for conveying a thrombus treatment medium; wherein the outer diameter of the supply tube is smaller than the inner diameter of the sheathing canal, and a gap channel is formed between the outer wall of the supply tube and the inner wall of the sheathing canal and is suitable for providing a channel for sucking thrombus. By adopting the technical scheme, thrombus can be removed.

The invention provides a thrombus aspiration catheter with a flow monitoring function. The device comprises a suction tube body, a suction handle, an ultrasonic flow sensing assembly, a processing unit and a display module, the ultrasonic flow sensing assembly is arranged at the far end of the suction pipe body and used for monitoring a blood flow signal at a suction opening of the suction pipe body. The processing unit is electrically connected with the ultrasonic flow sensing assembly and is used for processing the blood flow signal and calculating to obtain suction indication information; the display module is connected with the processing unit and is used for displaying the suction indication information; the suction indication information comprises blood flow information. Therefore, the blood flow near the suction port of the suction catheter can be obtained through monitoring of the ultrasonic flowmeter, whether the suction port is aligned with the thrombus or not and whether the thrombus is sucked into the catheter or not can be judged in an auxiliary mode, the thrombus can be sucked more accurately without unnecessarily drawing out blood, blood loss of a patient is reduced, meanwhile, the suction efficiency is improved, and the blood taking time is shortened. The treatment effect is improved.

The invention discloses a variable-caliber catheter-sheath integrated thrombus aspiration catheter with an intra-catheter thrombus breaking function, and relates to the technical field of thrombus treatment medical catheters.The catheter-sheath integrated thrombus aspiration catheter comprises a guiding catheter and an aspiration pipe, the aspiration pipe is inserted into the guiding catheter in a sliding mode, and the catheter-sheath integrated thrombus aspiration catheter further comprises a multi-stage adjustment aspiration opening mechanism, a locking mechanism and a thrombus breaking mechanism; and the suction pipe is used for driving the multi-stage adjustment suction port mechanism to retract into the guide pipe or expand outwards from the guide pipe step by step. The multi-stage suction port adjusting mechanism connected with the end part can be driven by the suction pipe to extend out of the guide pipe, and is expanded step by step to reach the caliber with the corresponding size, and the multi-stage suction port adjusting mechanism is composed of the adjusting and scaling assembly, the supporting section metal wire and the covering film, so that a suction port with a larger caliber is conveniently defined; the thrombus can be conveniently and completely sucked and guided into the suction tube, an expander is not needed, operation of a doctor is reduced, and the situation that large thrombus is broken before being sucked into the tube and escapes to a far-end blood vessel to cause blockage can be avoided.

The invention discloses an intracranial thrombus aspiration catheter and a preparation method thereof, and belongs to the technical field of medical instruments, the catheter comprises a PTFE lining, a reinforcing layer (including a coil layer and a braid layer), an outer plastic layer designed in a segmented manner, a platinum-iridium alloy developing ring and a coating. The preparation method comprises the steps of PTFE lining extrusion, coil winding, braid layer covering, segmented plastic layer forming, developing ring embedding and fixing and coating treatment and surface functionalization. Compared with the prior art, by optimizing the formula and process of the coating, the adhesive force of the coating is remarkably improved, falling is prevented, meanwhile, the surface hydrophilicity is enhanced, thrombus adhesion is reduced, and blood compatibility and operation performance are improved. In addition, the flexibility, the kink resistance and the collapse resistance of the catheter are improved through the multi-layer structural design, and the stability and the effectiveness of the catheter in a complex blood vessel environment are ensured.

The invention provides a thrombus aspiration catheter with the variable inner diameter of the far end, and belongs to the technical field of interventional surgical instruments.The catheter comprises an interventional catheter, an operating handle and a collecting component, and the interventional catheter is used for moving along a blood vessel to be close to the thrombus position; the operating handle is arranged at the near end of the interventional catheter and is used for providing suction force for the interventional catheter; the collecting part is arranged at the far end of the interventional catheter, the near end of the collecting part is communicated with the interventional catheter, and the far end is open and adjustable in diameter; when the interventional catheter moves along the blood vessel to be close to the thrombus, the diameter of the collecting part is in a contracted state and is not larger than that of the interventional catheter, and after the collecting part is in place, the collecting part expands to increase the diameter of the far end so as to integrally suck the thrombus; the thrombus aspiration catheter is mainly used for solving the technical problems that in the prior art, a small-caliber thrombus aspiration catheter is insufficient in aspiration force, repeated aspiration is needed, thrombus escape is easily caused, and a large-caliber catheter is poor in passing ability and difficult to reach a diseased region.

The utility model discloses a thrombus aspiration plugging sheath system based on a special-shaped cavity, which comprises a vacuum device, an aspiration plugging sheath, an aspiration plugging sheath and an aspiration plugging sheath, and is characterized in that the vacuum device comprises a negative pressure needle cylinder and a piston buckle arranged on the side wall of the negative pressure needle cylinder; the balloon sheath tube comprises a tube body, a balloon used for blocking is arranged at the far end of the tube body, a connector connected with the vacuum device is arranged on the side of the near end of the tube body in a supporting mode, and a plurality of special-shaped cavities are formed in the tube body; the thrombus dragging instrument is used for blocking blood flow to reduce blood loss during thrombus suction and intercepting the thrombus to prevent the thrombus from escaping when the thrombus is dragged; the vacuum device is arranged on the side branch of the near end of the balloon sheath tube, and the thrombus dragging instrument is arranged in the balloon sheath tube. According to the embodiment of the utility model, the balloon filling opening and the thrombus suction opening are formed in the catheter body, a multi-cavity structure is adopted, the balloon sheathing canal blocks blood flow, and the thrombus dragging instrument is matched with a vacuum device to suck, drag and take out thrombus.

A suction bottle for a thrombus aspirator is equipped with a thrombus trapping member that spreads so as to separate the inside of the bottle into an upper region and a lower region. The thrombus trapping member is provided with a plurality of through-holes that cause blood guided to the upper surface to flow down from the upper region to the lower region.

The invention discloses a peristaltic thrombus breaking and moving suction catheter and a using method thereof, and relates to the technical field of interventional medical instruments.The peristaltic thrombus breaking and moving suction catheter comprises a catheter body, the catheter body comprises a suction channel and an adjusting channel, and the adjusting channel is adjacent to the suction channel; the adjusting channel is provided with the peristaltic structure, the peristaltic structure comprises a plurality of adjusting sections arranged in the axial direction of the catheter body, the expansion degree between the two ends of each adjusting section is adjustable, during thrombus aspiration, the intermittent adjusting sections extrude the aspiration channel during expansion, and the parts, with the maximum expansion degree, of every two adjacent adjusting sections are not adjacent; the adjusting section enables part of the channel wall of the suction channel to be provided with a corrugated structure in the axial direction. And when the expansion degree of the adjusting section is adjusted every time, the positions, with the maximum expansion degree, of the adjusting section are different, so that the channel wall of the suction channel forms dynamic corrugated movement (namely similar to gastrointestinal peristalsis surface movement), and the thrombus carrying power is enhanced.

The invention provides a thrombus aspiration catheter. The thrombus aspiration catheter comprises an inner tube, an inner tube handle, an outer tube and an outer tube handle, the far end of the outer tube is provided with a conical head capable of being elastically opened, the conical head is in a sealed state in a natural state, suction side holes are formed in the peripheral wall of the far end of the outer tube, and the near end of the outer tube is connected with an outer tube handle. The inner tube is movably arranged in the outer tube in a penetrating mode, the far end of the inner tube can eject open and penetrate out of the conical head, the conical head and the inner tube are elastically sealed, the near end of the inner tube extends out of the near end of the outer tube handle and is connected with the inner tube handle, the inner tube handle is provided with a negative pressure source connecting assembly, and the inner tube handle is provided with an adjustable sealing valve. A sealed aspiration channel is formed within the inner tube and an instrument is sealed therethrough. Therefore, aspiration of thrombus in different directions, especially adherent and centered thrombus can be conveniently achieved, the aspiration ports in different directions are convenient and rapid to switch, and the thrombus aspiration efficiency and the thrombus extraction effect can be improved.

The utility model relates to the technical field of medical instruments, and provides a thrombus aspiration catheter. The body comprises a shell, a rotary driving part and a movable driving part, and the rotary driving part and the movable driving part are connected to the shell; an inner tube; a first side suction port is formed in the inner pipe; the inner pipe is sleeved with the middle pipe, and a second side suction opening is formed in the middle pipe; the middle pipe is sleeved with the outer pipe, and a third side suction opening is formed in the outer pipe; the far end of the outer tube is formed by retracting from the far end of the middle tube to the near end of the middle tube; the middle pipe is sleeved with the support, the support is arranged in a half circle in the circumferential direction, and the two ends of the support are connected with the far end of the outer pipe and the far end of the middle pipe respectively; the rotary driving part drives the inner pipe to rotate; the movable driving part is connected with the near end of the outer tube and drives the outer tube to move horizontally relative to the middle tube. The thrombus aspiration catheter can aspirate adherent old thrombus or thrombus in complex blood vessels, can adapt to more intracavity thrombus symptoms, and is faster and safer.

A catheter-based robotic program system and a system for thrombus aspiration. A system for thrombus aspiration includes positioning a catheter lumen in a first position relative to a thrombus, the catheter lumen defined by a catheter, initiating evacuation of the lumen, where the lumen is not in fluid communication with the catheter lumen, determining that a pressure within the lumen is equal to or less than a target aspiration pressure, and in response to determining that the pressure within the lumen is equal to or less than the target aspiration pressure, automatically establishing fluid communication between the lumen and the catheter lumen.

The utility model provides a coronary artery thrombus suction catheter, and belongs to the technical research field of medical instruments. In order to solve the problems that an existing conveying catheter for measuring thrombus is inconvenient to operate and is not beneficial to follow-up thrombus removal, a blocking air bag is arranged on the outer side of a suction catheter, and an auxiliary suction hole is formed in a port of the suction catheter; during use, after the suction catheter penetrates through a thrombus to measure the length of the thrombus, the plugging air bag is inflated to block blood flow in a blood vessel, so that the thrombus is prevented from flowing away along the blood; in the subsequent thrombus removal process, thrombus located between the outer wall of the suction catheter and the inner wall of the blood vessel can enter the inner cavity of the suction catheter from the auxiliary suction hole, in this way, the thrombus can be thoroughly removed, the structure is simple, and operation is convenient.

The invention relates to a catheter device (1) for retrieving a thrombus (T) from a vessel. The catheter device comprises a main body (15) with an internal channel (15') extending at least through a distal part of the main body (15). An attachment element (4) is attached or attachable to the main body (15) by a flexible line (2). The attachment element (4) further comprises a magnetic element (7) for steering and / or guiding by an exter-nal magnetic actuator and is adapted to attach to the thrombus (T) by means of a suction mechanism. The suction mechanism may include a suction hole (8) and / or a suction line (3). The suction mechanism may comprise a suction cup (6). The thrombus (T) is retrievable with the catheter device by exerting a pulling force on the attachment element (4) via the flexible line (2).

The present disclosure relates generally to thrombectomy devices. An exemplary catheter comprises: an emitter assembly comprising at least one emitter; wherein each emitter comprises an electrode pair, and wherein each emitter is configured to generate a plurality of cavitation bubbles when a voltage is applied to the pair of electrodes; an infusion lumen formed by at least a portion of an outer wall of the catheter, the infusion lumen configured to receive a conductive fluid, wherein the emitter assembly is housed within the infusion lumen, wherein a distal segment of the infusion lumen includes a plurality of holes on the portion of the outer wall of the catheter, and wherein the plurality of holes are configured to release the conductive fluid and the plurality of cavitation bubbles out of the catheter to treat thrombus at a treatment site; an aspiration lumen including aspiration ports at the distal segment thereof.

The utility model provides an intravascular thrombus aspiration catheter. The intravascular thrombus aspiration catheter comprises an internal flow channel, a far-end aspiration catheter section, a middle catheter section and a near-end driving catheter section, and the internal flow channel is sequentially communicated with the far-end aspiration catheter section, the middle catheter section and the near-end driving catheter section from the far end of the intravascular thrombus aspiration catheter to the near end of the intravascular thrombus aspiration catheter. Wherein the intravascular thrombus aspiration catheter further comprises an aspiration inlet and an outflow window, and the internal flow channel is communicated with the aspiration inlet and the outflow window; the inner flow channel is provided with an impeller; a suction inlet, an impeller and an outflow window are sequentially arranged from the far end to the near end of the intravascular thrombus suction catheter, and the intravascular thrombus suction catheter further comprises a filter screen. The filter screen is arranged between the impeller of the inner flow channel and the outflow window, or the filter screen is arranged outside the outflow window and wraps the outflow window. According to the intravascular thrombus aspiration catheter, the working load of the impeller can be effectively reduced, and then adverse events caused by excessive heat generated due to large load are reduced.

The present disclosure relates generally to thrombectomy devices. An exemplary catheter comprises: an emitter assembly comprising at least one emitter; wherein each emitter comprises an electrode pair, and wherein each emitter is configured to generate a plurality of cavitation bubbles when a voltage is applied to the pair of electrodes; an infusion lumen formed by at least a portion of an outer wall of the catheter, the infusion lumen configured to receive a conductive fluid, wherein the emitter assembly is housed within the infusion lumen, wherein a distal segment of the infusion lumen includes a plurality of holes on the portion of the outer wall of the catheter, and wherein the plurality of holes are configured to release the conductive fluid and the plurality of cavitation bubbles out of the catheter to treat thrombus at a treatment site; an aspiration lumen including aspiration ports at the distal segment thereof.

Disclosed herein are devices, systems, and methods for at least partially automatically aspirating clot material and blood from the vasculature of a patient, filtering the blood from the clot material, and returning the blood to the vasculature of the patient. In some embodiments, a system in accordance with the present technology can include (i) an aspiration catheter configured to be positioned within the vasculature of a patient proximate to clot material therein, (ii) an aspiration assembly selectively fluidly couplable to the aspiration catheter, (iii) a filter assembly selectively fluidly couplable to the aspiration assembly, (iv) a reinfusion and flushing assembly selectively fluidly couplable to the filter assembly, (v) a reinfusion catheter selectively fluidly couplable to the reinfusion and flushing assembly and configured to be positioned within the vasculature, and (vi) a control system communicatively coupled to the aspiration assembly, the filter assembly, and / or the reinfusion and flushing assembly.

The embodiment of the invention provides an expansion catheter device. The dilation catheter device comprises a catheter body assembly and a balloon body assembly. The pipe body assembly comprises a first pipe body and a second pipe body which extend in the same axial direction and can move relative to the axial direction. The second pipe body penetrates through the first pipe body. The balloon body assembly comprises an expansion balloon body and an interception balloon body which are arranged at the far end of the second tube body at an interval; the expansion bag body and the interception bag body are arranged in an expandable or contractible mode. Wherein the expansion bag body and the interception bag body are used for inputting filler to expand when the bag body assembly is exposed out of the first tube body along with relative axial movement, and a thrombus interception space is defined by the expansion bag body and the interception bag body and the blood vessel wall, so that at least part of thrombus extruded by the expansion bag body enters the thrombus interception space; and the first tube body enters the thrombus interception space to perform thrombus suction action. The expanded intercepting capsule body can intercept part of thrombus which falls off due to extrusion, and the thrombus is prevented from flowing to the far end of a blood vessel and causing embolism; and the first tube body can also suck the intercepted part of thrombus out of the body.

The application discloses a kind of thrombus suction control method and thrombus suction device, and thrombus suction device includes suction assembly, suction assembly includes the shell with pressure cavity, piston rod and suction catheter, thrombus suction device also includes the motor of piston rod movement and the controller connected with motor, control method is: suction catheter is positioned to the blood vessel without thrombus, make motor operate according to speed V0, calibrate the pressure value B in pressure cavity under normal blood condition;Suction catheter is positioned to the blood vessel with thrombus, make motor operate according to speed V1, V1≤V0, make dynamic pressure value A0 in pressure cavity: when A0≤B, make motor keep speed V1 operation;When A0>B, make motor increase from speed V1: when B<A0≤C, make motor increase to speed V2 operation;When C<A0≤D, make motor increase to speed V3 operation;When D<A0≤E, make motor increase to speed V4 operation.The control method thrombus removal efficiency is high, and blood loss can be reduced.

The utility model relates to a thrombus aspiration device, which belongs to the technical field of medical instruments, and comprises a piston rod, an injector empty cylinder and a clamping limit piece, the piston rod comprises a fan blade and a piston arranged at the end part of the fan blade, the piston is arranged in the injector empty cylinder, a plurality of grooves are arranged on the fan blade, and the clamping limit piece is arranged on the fan blade. A groove is formed in the injector hollow cylinder, the clamping limiting piece is located outside the injector hollow cylinder and clamped in the groove, an injection head communicated with the injector hollow cylinder is arranged at the end of the injector hollow cylinder, the injection head is connected with a suction catheter through a Luer connector, and a pressure monitoring assembly is arranged on the injection head. The real-time pressure in the injector in the thrombus suction process can be read by arranging the pressure gauge, and whether the suction catheter makes contact with the thrombus or not can be judged in an auxiliary mode. The thrombus suction device can visually monitor the negative pressure in the injector, and thrombus at the head end of the catheter is prevented from falling off due to insufficient negative pressure when the suction catheter is withdrawn.

The thrombus aspiration catheter comprises a catheter body and a deformation structure, and the deformation structure comprises a plurality of supporting rings and deformation assemblies arranged between every two adjacent supporting rings; when the axial distance between every two adjacent supporting rings is reduced, the deformation assembly deforms inwards in the radial direction, and the deformation assembly and the two adjacent supporting rings jointly form a variable-diameter channel with the inner diameter firstly decreasing and then increasing from far to near. When the axial distance between every two adjacent supporting rings is increased, the deformation assemblies deform and recover in the radial direction, and the minimum inner diameter of a channel formed by the deformation assemblies and the two adjacent supporting rings is correspondingly increased. The variable-diameter channel can form mechanical wrapping and clamping on the thrombus at the position with the minimum inner diameter, and thrombus escape or far-end embolism in the suction process is effectively prevented; meanwhile, the structure is beneficial for forming a negative pressure enhancing cavity at the far end of the catheter body, and stable grasping and concentrated efficient suction of the thrombus are achieved.

A thrombus suction negative pressure suction device comprises an injection needle tube, a piston is arranged in the injection needle tube in a sliding mode, the head end of the injection needle tube is connected with a connecting sleeve, the head end of the injection needle tube is connected with symmetrically-distributed air outlet tubes, a limiting frame is arranged in each air outlet tube, an air blocking plate is arranged on each limiting frame in a sliding mode, and the air blocking plates are connected with the connecting sleeves in a sliding mode. The air blocking plate is used for sealing the air outlet pipe, the air blocking plate is sleeved with a first elastic piece, and a first ball valve is arranged in the connecting sleeve. By arranging the liquid storage tube on the injection needle tube, a urokinase solution can be directly injected into the suction catheter without additionally using a three-way valve, the overall operation is simpler, and the injection needle tube and the suction catheter can be blocked through the first ball valve, so that the injection needle tube and the suction catheter can be independently operated; and the injection needle tube can exhaust internal air through the air blocking plate, negative pressure is achieved, air is prevented from entering the suction catheter, and therefore it is guaranteed that the suction catheter is in a stable negative pressure state.

The liquid storage tank comprises a tank body and a tank cover, the tank cover is installed at the top of the tank body, a liquid inlet and an air outlet are formed in the top of the tank cover, a floating support is installed at the bottom of the tank cover and located below the air outlet, a floating groove is formed in the floating support, and a liquid outlet is formed in the floating groove. The floating groove is communicated with the air outlet, and a buoy is installed in the floating groove in a sliding mode. According to the blood storage tank, the air outlet is connected with an external thrombus suction pump, the liquid inlet is connected with an external matched thrombus suction catheter, the other end of the thrombus suction catheter is inserted into a blood vessel of a human body, and the end of the thrombus suction catheter reaches the thrombus. The buoyancy of the blood can enable the buoy to move upwards, so that the buoy blocks the air outlet, the blood can be prevented from entering a pump connected with the liquid storage tank through the air outlet, and the pump is prevented from being damaged due to the fact that liquid enters the pump.

The present invention discloses a track-type mechanical thrombus aspiration catheter, which belongs to the technical field of vascular interventional medical devices. It includes a suction catheter, in which a transmission shaft and an eccentric metal head are arranged; a metal connecting tube is arranged at the distal end of the suction catheter; an eccentric metal head is connected to the distal end of the transmission shaft, the center of mass of the eccentric metal head deviates from the rotation axis of the transmission shaft, and the eccentric metal head is located in the metal connecting tube. The suction catheter adopts an eccentric metal head structure, and the eccentric metal head makes an eccentric cone swing at the distal end of the suction catheter, which can increase the suction area of ​​the suction port through the eccentric setting, improve the suction force of the suction port, and at the same time, the eccentric cone swing crushing structure crushes the large thrombus near the suction port, reduces the thrombus blockage near the suction port, improves the thrombus aspiration efficiency, reduces blood loss, and reduces the operation time.

The present disclosure relates to the field of medical equipment, and provides an intelligent thrombus aspiration system, including a negative pressure suction pump, a blood collection tank, a thrombus aspiration connection unit, a suction catheter and a man-machine interaction module. The man-machine interaction module is configured to transmit a target catheter diameter of the suction catheter to the thrombus aspiration connection unit in response to a command for selecting the target catheter diameter. The thrombus aspiration connection unit is configured to obtain historical treatment data corresponding to the target catheter diameter, cluster the historical treatment data through a neural network model so as to obtain a target suction frequency, a target suction duration and a target suction negative pressure corresponding to the target catheter diameter, and control the negative pressure suction pump and the suction catheter in accordance with the target suction frequency, the target suction duration and the target suction negative pressure. According to the present disclosure, it is able to automatically generate an optimum suction strategy corresponding to the target catheter diameter, determine a suction state of the suction catheter, thereby to reduce the amount of bleeding of a patient without reducing the suction efficiency, and remarkably improve a clinical effect of thrombus aspiration.