55 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 invention discloses a remotely-controllable coronary heart disease automatic radiography injection device, and belongs to the field of medical instruments. Comprising an injection device shell, one side of the injection device shell is connected with a remote control end through a wire, and a four-way pipe is arranged on one side of the inner surface of the injection device shell in a penetrating mode; through the automatic injection assembly, the injection speed and dosage of a contrast agent and other injections in the coronary angiography process can be accurately controlled, the pressure in a ventricular cavity is displayed in real time, automatic pressure alarming is achieved, injection injection injection is stopped in time, and complications such as vascular interlayer and laminar flow are avoided; automatic exhaust is achieved through the air valve, it is ensured that pushing injection is conducted after air is exhausted, and adverse events such as air embolism caused by incomplete manual exhaust in a traditional coronary intervention operation are avoided; the whole-course operation is simple, the radiography speed is increased through automatic, intelligent and other precise operations, the operation time is saved, and the operation safety, standardization and stability are improved.

The utility model relates to the technical field of medical treatment, in particular to an upper limb fixing device for contrast injection. The upper limb supporting device comprises a U-shaped base and an upper limb supporting assembly rotationally arranged at the bottom of the base. The upper limb supporting assembly comprises a large arm supporting plate rotationally connected with the U-shaped base, a large arm extension plate slidably connected with the large arm supporting plate and a small arm supporting plate hinged to the large arm extension plate. A mounting groove is formed in the upper end face of the big arm supporting plate, and the big arm extension plate is slidably connected with the big arm supporting plate through the mounting groove. The upper end face of the small arm supporting plate is hinged to a rotating supporting plate used for turning upwards. An inflatable air bag is arranged between the rotating supporting plate and the forearm supporting plate. The utility model aims to provide an upper limb fixing device for radiography injection. The upper limb fixing device solves the problems that the use angle of an existing arm supporting frame is difficult to adjust flexibly, and the use comfort is low.

A catheter system may include a dual lumen catheter. The dual lumen catheter may comprise an inner lumen configured to accommodate interventional devices and an outer lumen surrounding the inner lumen. The outer lumen may comprise a plurality of contrast injection ports and a shape-changing mechanism. Additionally, a rotation mechanism may be coupled to a proximal end of the dual lumen catheter and configured to rotate the dual lumen catheter. A locking mechanism may also be included, configured to maintain a shape of the dual lumen catheter. This system allows for enhanced control and functionality during medical procedures, potentially improving the delivery of treatment and diagnostic capabilities without the need for catheter exchange.

The utility model is applicable to the technical field of medical instruments, and discloses an ultrasonic contrast injection device which comprises a rack, a foaming assembly and a blood pressure measuring assembly, and the foaming assembly and the blood pressure measuring assembly are both installed in the rack; the foaming assembly comprises a foaming mechanism, a driving mechanism and a transmission mechanism, the transmission mechanism is in transmission connection between the driving mechanism and the foaming mechanism, and the driving mechanism is used for driving the foaming mechanism to manufacture and inject a contrast agent; the blood pressure measuring assembly is used for measuring blood pressure. On one hand, the foaming assembly is arranged for manufacturing and injecting the contrast agent, and the blood pressure measuring assembly is arranged for measuring the blood pressure, so that the ultrasonic contrast injection device can be used for carrying out a foaming test and also can be used for monitoring the blood pressure. On the other hand, due to the fact that the foaming assembly and the blood pressure measuring assembly are both arranged on the machine frame, the integration degree of the foaming assembly and the blood pressure measuring assembly is improved, the space utilization rate of the machine frame can be improved, and the volume of the ultrasound contrast injection device integrating the two functions is not too large.

A catheter system may include a dual lumen catheter. The dual lumen catheter may comprise an inner lumen configured to accommodate interventional devices and an outer lumen surrounding the inner lumen. The outer lumen may comprise a plurality of contrast injection ports and a shape-changing mechanism. Additionally, a rotation mechanism may be coupled to a proximal end of the dual lumen catheter and configured to rotate the dual lumen catheter. A locking mechanism may also be included, configured to maintain a shape of the dual lumen catheter. This system allows for enhanced control and functionality during medical procedures, potentially improving the delivery of treatment and diagnostic capabilities without the need for catheter exchange.

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 embodiment of the invention provides an intelligent control method and system for radiography injection of a wireless intelligent radiography instrument, and belongs to the technical field of artificial intelligence. The method comprises the steps of obtaining first operation data and a first radiography state; performing data identification on the first operation data to obtain first abnormal data, and processing the first operation data according to the first abnormal data to obtain second operation data; obtaining a second contrast state from the first contrast state according to the second operation data; performing feature selection on the second operation data by using the neighborhood information to obtain target associated features; obtaining third operation data from the second operation data according to the target association feature; determining a state prediction model according to the third operation data and the second contrast state; obtaining initial operation data, and predicting a radiography injection state of the initial operation data according to the state prediction model to obtain a target prediction result; and adjusting the initial operation data according to the target prediction result to obtain target operation data corresponding to the target user.

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 this design product: injection line three-way connector. 2. Purpose of this design product: used to connect the injection pipeline of the high-pressure contrast injection device. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

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.

A medical scanner has a detection system to enable a Valsalva maneuver to be identified. The scanner is controlled to cease the delivery of scanning radiation or cease contrast injection, or else user advice is provided to cease the delivery of scanning radiation or cease contrast injection, in response to detection of a Valsalva maneuver.

This application relates to the field of contrast injection technology, and specifically discloses a contrast injection device with self - adaptive adjustment of injection speed, which includes a frame body; a saline cylinder for containing physiological saline; a contrast cylinder for containing contrast agent; a mixing cylinder for containing contrast agent, physiological saline or a mixture of contrast agent and physiological saline; an injection tube, one end of the injection tube is connected to the mixing cylinder, and the other end of the injection tube is connected to a syringe; two connecting tubes are provided, one of the connecting tubes is connected between the saline cylinder and the mixing cylinder, and the other connecting tube is connected between the contrast cylinder and the mixing cylinder. One - way valves are provided on both the connecting tubes and the injection tube; an extrusion mechanism includes a push plate and a driving component, the push plate is slidably arranged in the mixing cylinder, and the driving component is used to drive the push plate to slide along the axis of the mixing cylinder so as to discharge the solution in the mixing cylinder or suck in the solution in the saline cylinder and the contrast cylinder. This application can simplify the injection process.

A fluid injector system includes a control device operably associated with at least one drive component for use in actuating a plurality of fluid containers in fluid communication with a patient through an administration line. The control device includes at least one processor programmed or configured to enable programming of a diagnostic injection protocol comprising one or more phases according to which at least one of the first and the second fluid containers are selectively actuatable by the at least one drive component to enable injection of at least one of a first fluid and a second fluid into the patient. The control device is further programmed or configured to enable selection and commencement of at least partial preloading into the administration line of at least one of the first fluid and the second fluid in accordance with the one or more phases of the diagnostic injection protocol.

Some contrast injection systems use relatively-large inner diameter tubing to inject contrast fluid into a patient. The contrast injection system of the embodiments presented herein takes advantage of the elastic properties of tubing to “pre-stress” smaller inner diameter tubing into larger inner diameter tubing prior to injecting contrast into the patient. As such, the contrast injection system of these embodiments can reduce the risk of system-pressure-limit-induced injection interruption, improve maximum flow rate, and reduce the use of plastics.

The invention relates to the technical field of radiography injection, and discloses a clinical radiography injection device for cardiovascular medicine, the clinical radiography injection device comprises a rod body, a medicine bottle, a hose and an extrusion pushing assembly, the medicine bottle is located above the rod body, the hose is fixedly arranged at the bottom of the medicine bottle, the hose is communicated with the medicine bottle, and the extrusion pushing assembly is arranged on the rod body. The invention particularly provides a clinical radiography injection device for the cardiovascular medicine department. The clinical radiography injection device is provided with an extruding and pushing assembly.

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.

A fluid injector system for use in administering to a patient a fluid in an injection protocol in connection with a diagnostic imaging procedure includes at least one display and a control device. The control device is programmed to determine, for each of the injection protocols performed by the fluid injector system, a component status for the at least one disposable component. The component status indicates whether use of the at least one disposable component was compliant with instructions for use applicable to the at least one disposable component. The control device is further programmed to enable the at least one display to display a compliance report. The compliance report includes one or more visual indicators providing visual feedback about compliance with the instructions for use based on the component status determined for each of the injection protocols performed using the fluid injector system.

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.

The invention provides a computer-implemented method for use in contrast medical imaging, the method comprising generating input data representative of a plurality of patient parameters, wherein at least some of the input data is obtained from sensor data acquired by one or more sensors; inputting the input data into an AI model; and obtaining, using the AI model, operation parameters for operation of a contrast medical imaging system, the operation parameters comprising contrast injection parameters, and optionally comprising imaging parameters.

The invention relates to the technical field of contrast injection, in particular to a contrast agent injection device for cardiovascular medicine, which comprises a needle cylinder made of a transparent material, an injection rod slidably connected in the needle cylinder, and a guide frame fixedly connected to the inner bottom of a shell and internally provided with a sliding groove. The limiting frame is slidably connected to the guide frame, one end of the second spring is fixedly connected to the limiting frame, the other end of the second spring is fixedly connected to the guide frame, the sliding part is slidably connected to the shell, and the pushing assembly is arranged at the inner bottom of the shell and is in extrusion fit with the injection rod. The angle of the shell is adjusted through clamping fit of the second limiting piece and the guide frame, the injection needle is made to directly face the blood vessel of a patient, and the injection rod can be pulled out of the needle cylinder to check whether the injection needle is successfully inserted into the blood vessel of the patient or not through arrangement of the gear and the first connecting rod; and the injury and the influence on a patient caused by secondary insertion of the needle head are avoided.

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.