12 results about "Contrast injection" patented technology

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 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 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.

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 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.

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.

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.