22 results about "Contrast injection" patented technology

The invention relates to the related technical field of medical instruments, in particular to a contrast injection device for enhancing nuclear magnetic resonance, which comprises a base, a mounting shell arranged at the upper part of the base, a first barrel arranged at the left upper part in the mounting shell, a second barrel arranged at the right upper part in the mounting shell, and a mixing barrel arranged in the middle of the upper part of the mounting shell, a first piston rod is arranged in the first barrel, a second piston rod is arranged in the second barrel, communicating pipes are respectively communicated between the first barrel and the mixing barrel and between the second barrel and the mixing barrel, a one-way water inlet pipe is arranged at the top of the barrel, and the one-way water inlet pipe is communicated with an external liquid storage tank. By rotating the adjusting screw rod, the adjusting screw rod drives the first wedge-shaped block to move to the position of the needed dosage, then the rodless air cylinder controls the extrusion plate to move upwards, and after the extrusion plate moves upwards and makes contact with the plate body, the piston rods move upwards to inject the contrast agent and normal saline of the corresponding dosage into the mixing barrel to be mixed.

The present technology relates to systems and methods for removing a thrombus from a blood vessel of a patient. In some embodiments, the present technology is directed to systems including an elongated catheter having a distal portion configured to be positioned within the blood vessel of the patient, a proximal portion configured to be external to the patient, and a lumen extending therebetween. The system can also include a fluid delivery mechanism coupled with a fluid lumen and configured to apply fluid to at least partially fragment the thrombus.

The application discloses a medicine liquid conveying device and a contrast injection device. The medicine liquid conveying device and the contrast injection device comprise a limiting piece, a center disc, a power piece and a squeezing wheel. The power piece is used for driving at least one of the center disc and the limiting piece, so that the center disc and the limiting piece rotate relatively. The squeezing wheel is installed on the center disc or the limiting piece through a first shaft or a first mounting groove. A gap is formed between the squeezing wheel and the limiting piece, between the squeezing wheel and the center disc or between different squeezing wheels. The gap is used for embedding a hose. The center disc and the limiting piece can at least squeeze the hose located in the gap through the squeezing wheel during relative rotation, so as to convey the medicine liquid in the hose. The squeezing wheel rotates by relying on the hose friction during the process of squeezing the hose. The upper limit of the rotating speed of the center disc is 300 revolutions per minute. Alternatively, the rotating speed of the center disc satisfies the condition that the flow rate of the medicine liquid in the hose is between 1ml / s and 30ml / s. The above scheme can simplify the structure and has high precision.

The application discloses a high-pressure contrast injection system and relates to the technical field of medical devices.The high-pressure contrast injection system comprises an operation table, a medicine bottle placing rack, an intermediate fixed table plate, three pressure injection cylinders, a three-way joint, a front end infusion tube, a mixed infusion tube, a four-way joint, a tail end infusion tube, an ultrasonic wave flow sensor, a pressure sensor, a filter core and an optional bubble sensor.The system adopts an electromagnetic magnetic attraction connection piston, a magnetic attraction frame+sliding clamping strip+screw rod to quickly fix the injection cylinder, closed loop flow control to accurately proportion three kinds of medicaments, real-time pressure monitoring and automatic adjustment, and automatic bubble shutdown, so that the liquid medicine suction, mixing and injection are fully automated.The system is safe and stable, and is convenient to install and disassemble through the one-way check valve, the reinforcing sleeve ring and the elastic rubber gasket through hole.

The invention discloses an acoustic contrast injection device which comprises a second empty barrel connected with the side wall of a first empty barrel. A pressurizing mechanism and a piston connected with the pressurizing mechanism are arranged in the second empty barrel, the pressurizing mechanism is driven to drive the piston in the second empty barrel to move under the reciprocating action of a piston shaft and the piston in the first empty barrel, pressure is applied to a contrast agent through the piston in the second empty barrel, and the contrast agent is driven to flow towards the first empty barrel; the first empty barrel and the second empty barrel are used for containing radiography liquid raw materials, a doctor fixes the first empty barrel and the second empty barrel with one hand, the piston shaft is rapidly pushed and pulled in a reciprocating mode with the other hand, the first empty barrel and the second empty barrel push and inject normal saline and blood into the first empty barrel and the second empty barrel to be mixed with air in the second empty barrel, and therefore radiography bubbles uniform in size are formed. Under the action of the pressurizing mechanism, the operation is simpler, and compared with a pneumatic or electric mode for injecting the contrast agent, the equipment cost and the use cost are greatly reduced.

The utility model discloses a dose precision detection device for high-pressure radiography injection, which belongs to the technical field of dose detection of high-pressure radiography injection and comprises a driving component, a potentiometer component and a lead screw component which are mounted on a support plate. The potentiometer assembly comprises a potentiometer and a potentiometer gear, the potentiometer is fixedly installed on the supporting plate, and the output end of the potentiometer is connected with the potentiometer gear. The lead screw assembly comprises a lead screw, a lead screw gear and a tubular push rod, the lead screw is rotationally installed on the supporting plate through a bearing, the lead screw gear is coaxially installed outside the lead screw, a nut in threaded connection with the lead screw is connected with the tubular push rod, and the tail end of the tubular push rod is connected with a piston rod in the needle cylinder. The lead screw gear is in transmission connection with the potentiometer gear through a transmission gear. When the driving assembly drives the lead screw to rotate, the potentiometer can accurately detect the displacement of the tubular push rod, that is, the dosage is accurately detected, the potential safety hazard of line damage is avoided, and convenience and high efficiency are achieved.

1. The name of the design product: high pressure contrast injection system. 2. The use of the design product: high pressure contrast injection system for injecting contrast medium. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: front view.

A method for measuring blood flow in an organ of a subject includes a step of administering an iodine-based contrast agent to the subject and acquiring preparatory computed tomography (CT) images of the organ, referred to as preparatory CT images. The distribution of the iodine-based contrast agent is then monitored using bolus tracking based on the preparatory CT images and the contrast injection duration to determine a time of maximum contrast enhancement. At or near this identified time, dual-energy computed tomography (CT) images of the organ are acquired, referred to as dual-energy CT images. A curve fitting function is applied to the bolus tracking and dual-energy CT images to calculate iodine concentration over time. Based on the calculated iodine concentration, the blood flow rate in the organ is quantified. A system implementing the method is also provided.

The invention discloses a piston butt joint device of a high-pressure radiography injector, which is used for inserting and matching a piston rod and a piston and comprises an elastic clamping jaw and a clamping ring. The elastic clamping jaws are connected to the end face of the side, facing the piston rod, of the piston, the near ends, close to the piston, of the elastic clamping jaws are elastic connecting sections, the far ends of the elastic clamping jaws are bayonet sections, guide rib plates are arranged on the bayonet sections, and at least three elastic clamping jaws are symmetrically arranged around the axis of the piston. The piston rod comprises an inserting rod and a tripping sleeve arranged on the outer side of the inserting rod in a threaded and sleeving mode, and the clamping ring is fixed to the inserting rod. The sides, away from the piston, of the guide rib plates are provided with guide slopes, the sides, close to the piston, of the clamping ring and the tripping sleeve are provided with driving slopes capable of being attached to the guide slopes, and the driving slopes can enable the far-end sides of the elastic clamping jaws to gradually incline outwards in the radial direction through the guide slopes. Quick insertion and convenient disassembly of the piston and the piston rod can be realized, and the connection reliability can be ensured.

The application discloses a piston butt joint device of a high-pressure contrast injection syringe, which is used for inserting and connecting a piston rod and a piston, and comprises elastic clamping claws and a clamping ring. The elastic clamping claws are connected to the end face of the piston on the side facing the piston rod, the proximal end of the elastic clamping claws is an elastic connecting section, and the distal end is a bayonet section, the bayonet section is provided with a guide rib plate, and the elastic clamping claws are symmetrically arranged around the axis of the piston and are at least three in number. The piston rod comprises an inserting rod and a trip sleeve which is sleeved on the outside of the inserting rod in a threaded mode, the clamping ring is fixed on the inserting rod, and the piston is inserted into the piston rod. The side, away from the piston, of the guide rib plate is provided with a guide inclined surface, the side, close to the piston, of the clamping ring and the trip sleeve is provided with a driving inclined surface which can be attached to the guide inclined surface, and the driving inclined surface can make the distal end side of the elastic clamping claw tilt radially and gradually outwardly through the guide inclined surface. The piston butt joint device can realize the quick insertion and convenient disassembly of the piston and the piston rod, and can also ensure the reliability of the connection.

The present application discloses a contrast agent injection system that injects a contrast fluid into a patient using a relatively large inner diameter conduit. Contrast agent injection systems of embodiments presented herein take advantage of the elastic properties of conduits to "pre-stress" smaller inner diameter conduits into larger inner diameter conduits prior to injection of contrast agent into a patient. Contrast agent injection systems of these embodiments can thus reduce the risk of injection disruption caused by system pressure limits, improve maximum flow rates, and reduce the use of plastic.

The utility model relates to the technical field of medical instruments, in particular to a high-pressure radiography injection needle cylinder. The high-pressure radiography injection needle cylinder comprises a needle cylinder body, clamping blocks, a liquid outlet, a threaded sleeve, a piston, a fixing ring, a fixing block, a rotating ring, a rotating block and a first torsion spring, the right side of the needle cylinder body is vertically and symmetrically connected with the clamping blocks, and the left end of the needle cylinder body is connected with the liquid outlet. A threaded sleeve is connected to the left end of the needle cylinder body and located on the outer side of the liquid outlet, a piston is connected to the right end in the needle cylinder body, a fixing ring is connected to the right side of the needle cylinder body, and three fixing blocks are evenly connected to the outer side of the fixing ring. The clamping block and the needle cylinder base of the high-pressure injector are fixed through a rotary buckle structure, and on the basis, the mode that the rotating block abuts against the needle cylinder base is added, so that a double-locking mechanism is achieved, it is guaranteed that the needle cylinder and the needle cylinder base are connected more firmly, and the risk that a needle cylinder body loosens or falls off in the high-pressure injection process is reduced.

A medical scanner has a detection system to enable identification of Warshis actions. In response to detecting the Warshis action, the scanner is controlled to stop delivery of scanning radiation or stop contrast agent injection, or a user suggestion is provided to stop delivery of scanning radiation or stop contrast agent injection.

The invention discloses a needle cylinder quick connecting device of a high-pressure radiography syringe, which is used for connecting a needle cylinder and a needle head seat, one end of the needle cylinder is a cylinder inserting end, one end of the needle head seat is an inserting end, the inserting end is matched with the cylinder inserting end in an inserting manner, and the needle cylinder quick connecting device comprises a buckling part arranged on the needle cylinder and an elastic clamping jaw arranged on the needle head seat, the elastic clamping jaw is clamped and matched with the buckling part; the two elastic clamping jaws are connected to the outer side wall of the needle head base and are symmetrically arranged, one ends of the elastic clamping jaws are connected with the needle head base, the other ends of the elastic clamping jaws extend in the axial direction and towards the side close to the inserting end, the sides, close to the inserting end, of the elastic clamping jaws are obliquely arranged in the direction away from the needle head base, and the two ends of each elastic clamping jaw are provided with clamping parts matched with the buckling parts in a clamped mode. The reliability of connection between the needle head and the needle head base can be ensured, and meanwhile self-destruction after one-time use can be achieved.

The application discloses a needle cylinder quick connecting device of a high-pressure contrast injection syringe, which is used for connecting a needle cylinder and a needle seat. One end of the needle cylinder is a plug-in cylinder end, one end of the needle seat is a plug-in end, the plug-in end is in plug-in cooperation with the plug-in cylinder end, and the needle cylinder quick connecting device comprises a connecting buckle part arranged on the needle cylinder and an elastic clamping jaw arranged on the needle seat, which are in clamping cooperation. The elastic clamping jaw is connected to the outer side wall of the needle seat and is symmetrically arranged with two, one end of which is connected to the needle seat, and the other end extends along the axial direction and towards the side close to the plug-in end. The side close to the plug-in end of the elastic clamping jaw is arranged in an inclined manner away from the needle seat, and the two ends of the elastic clamping jaw are provided with clamping parts in clamping cooperation with the connecting buckle part. The needle cylinder quick connecting device can ensure the reliable connection between the needle and the needle seat and can be self-destroyed after one-time use.

An integrated imaging and device deployment platform and method may include a catheter, at least one imaging unit, at least one deployment unit, and at least one device configured to be deployed by the at least one deployment unit. The integrated imaging and device deployment platform facilitates improved navigation and deployment of a therapeutic or medical device by providing the at least one imaging unit proximate the deployment unit. Information generated from the at least one imaging unit may be utilized with additional imaging modalities to provide improved imaging and delivery of devices while reducing use of X-ray radiation and contrast injection.

This application relates to the technical field of injection fluid detection, and more particularly to an injection fluid detection circuit and device. It includes: a capacitance sensing module, an adjustable module, and a detection module; the input terminal of the detection module is configured with a target injection channel, and the output terminal of the detection module is connected to the input terminal of the adjustable module; the target injection channel is used to store conductive injection fluid; the sensing terminal of the capacitance sensing module is connected to the output terminal of the adjustable module, and the output terminal of the capacitance sensing module is connected to the input terminal of a main control module. This application obtains the state of the conductive injection fluid by measuring the voltage change through capacitance changes, avoiding misjudgments caused by mechanical wear, pressure fluctuations, and other factors in traditional methods. This improves the detection accuracy and reliability of the high-pressure contrast injection system, thereby effectively enhancing the overall performance of high-pressure contrast technology and the accuracy of medical diagnosis.

The utility model discloses a kind of contrast injection syringe and injection device, it is related to contrast injection technology field, including injection tube, the outside fixed connection of sealing element has push rod, the end fixed connection of push rod has push plate, the outside fixed connection of injection tube's liquid outlet has three-way pipe, fixed connection has connecting strip between two groups of injection tube, the inside of connecting strip is opened and limited to limit groove, the inside limit sliding connection of limit groove has slider, slide groove is opened in the two sides of limit groove, the two sides of slider and two groups of push plate are evenly fixed connection with connecting block, connecting strip and limit groove between installation have push-pull mechanism. The device is loaded with different medicaments by double pipe independently, and is pushed by screw rod synchronously by single motor drive wire, realizes two kinds of contrast agent accurate equal injection, and three-way valve branch control ensures that medicine and injection do not interfere each other, significantly improve the precision and operating efficiency of double tracer synchronous injection, and also can realize self exhaust function, use more convenient.

1. The name of the design product: peristaltic high pressure syringe. 2. The use of the design product: syringe for contrast injection. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 1.

The injection flow adjusting device comprises a main valve body, a valve element and a support, the valve element and the support are installed in the main valve body in a sliding mode and elastically connected, the bottom of the valve element is rotationally connected with the top of the support, a limiting ring is arranged on the inner side wall of the main valve body, and a supporting spring jacks the support to the initial position making contact with the limiting ring. A valve hole in the side wall of the valve element and a liquid outlet hole in the side wall of the main valve body are located at the same height. A guide block is arranged on the side wall of the valve core; a plurality of vertical guide grooves are further formed in the inner wall of the main valve body, an annular groove directly communicated with all the guide grooves is formed in the bottom end of each guide groove, in a normal state, the guide block is located at the top end in one guide groove, at the moment, a valve hole of the valve element is thoroughly staggered from all the liquid outlet holes, and when the valve element is pressed to the bottom, the valve element is rotated by a corresponding angle. And after the valve core is loosened, the valve hole of the valve core is coaxially aligned with the corresponding liquid outlet hole. The device is simple and compact in structure, can quickly adjust the flow gear, and accurately aims at radiography occasions.

A system for automatically determining whether a CT image was taken with or without contrast media uses a segmentation to isolate voxels of a vascularized structure and simple statistical thresholding of the attenuation values of the isolated voxels to provide transparent and robust discrimination. In some embodiments, the phase of the contrast injection can be deduced from a degree of variation in attenuation of the isolated organ voxels.

The utility model discloses an anti-virus device of a high-pressure injection device system suite, which belongs to the technical field of high-pressure radiography injection and is characterized in that a system pipeline in the high-pressure injection device system suite is communicated with a patient pipeline through a three-way valve, and an inlet end of the three-way valve is sealed through a plug cover. A system pipeline is communicated with a patient pipeline through a three-way valve; the situations that the backflow preventing valve fails and the blood pressure is too low, and therefore backflow penetrates through the backflow preventing valve are avoided, and cross infection caused by the fact that parvoviruses reversely flow into a system pipeline is effectively prevented; two anti-backflow valves are arranged, so that the anti-backflow effect is enhanced; when medicine needs to be added to a patient, the plug cover can be pulled up, the medicine adding syringe is communicated with the inlet end of the three-way valve, and medicine can be conveniently and safely injected into the body of the patient.