57 results about "Intra arterial" patented technology

Systems and methods of facilitating determination of risk of coronary artery disease (CAD) based at least in part on one or more measurements derived from non-invasive medical image analysis. The methods can include accessing a non-invasive generated medical image, identifying one or more arteries, identifying, regions of plaque within an artery, analyzing the regions of plaque to identify low density non-calcified plaque, non-calcified plaque, or calcified plaque based at least in part on density, determining a distance from identified regions of low density non-calcified plaque to one or more of a lumen wall or vessel wall, determining embeddedness of the regions of low density non-calcified plaque by one or more of non-calcified plaque or calcified plaque, determining a shape of the more regions of low density non-calcified plaque, and generating a display of the analysis to facilitate determination of one or more of a risk of CAD of the subject.

Some disclosed blood pressure estimation methods involve controlling, by a control system, an ultrasonic sensor system to transmit ultrasonic waves to a target object on an outer surface of an apparatus, the ultrasonic sensor system having M ultrasonic receiver elements in a single array. Some such methods involve receiving, by the control system from the ultrasonic sensor system, ultrasonic receiver signals from each of a plurality of the M ultrasonic receiver elements in the single array, the ultrasonic receiver signals corresponding to ultrasonic waves reflected from the target object. Some such methods involve detecting, by the control system, an artery within the target object based on the ultrasonic receiver signals. Some such methods involve estimating, by the control system, a blood pressure within the artery based on the ultrasonic receiver signals.

The invention relates to a double-cavity micro catheter capable of controlling a guide wire angle in a coronary artery. Belongs to the technical field of medical instruments. The problems that when coronary artery bifurcation lesion is treated at present, especially when a bifurcation angle is an obtuse angle, a guide wire is difficult to pass through, operation is complex, and experience of an operator is relied on are solved. A first tube cavity and a second tube cavity which are independent are arranged in the micro-catheter body; the near end of the first tube cavity is communicated with the connector, the far end is provided with a far port formed in the tube wall, and the near side is provided with a through hole. A guide wire restraining piece is fixed to the outer wall of the micro catheter body, and the guide wire restraining piece and the catheter wall jointly define a guide wire restraining channel communicated with the far end opening and the through hole. The second tube cavity is provided with an inlet hole in the side wall and an outlet hole in the far end face. The guide wire restraining piece can be an elastic film, and two ends are fixed through fixing rings. Developing marks can be arranged near the through holes. A guide wire penetrating out of the far end opening is physically restrained and guided to turn through the guide wire restraining channel, so that the guide wire is stably and accurately guided into a target side branch blood vessel at a set angle through the through hole, and the operation success rate and safety are remarkably improved.

Some disclosed examples involve controlling, by a control system of an apparatus, a light source system of the apparatus to provide light to a target object on an outer surface of the apparatus and receiving, by the control system, ultrasonic receiver signals from each of a plurality of M ultrasonic receiver elements in a single array, the ultrasonic receiver signals corresponding to ultrasonic waves generated by the target object responsive to the light. Some disclosed examples involve detecting, by the control system, an artery within the target object based on the ultrasonic receiver signals and estimating, by the control system, a blood pressure within the artery based on the ultrasonic receiver signals.

The invention relates to a medical first-aid instrument. The efficient bleeding stopping suite for the broken limb comprises an anastomosis cylinder and connecting assemblies arranged at the two ends of the anastomosis cylinder and used for being combined with the broken end. The center of the anastomosis cylinder is provided with a funnel-shaped center cone which is gradually shrunk towards the telecentric end, and the telecentric end of the center cone and the anastomosis cylinder are coaxially provided with a center cylinder; the central cylinder is communicated with the central cone, and a control valve is arranged on the central cylinder; an anastomosis needle used for being inserted into a broken limb artery is further arranged at the distal end of the center cylinder. Targeted rapid hemostasis can be effectively achieved on the whole, stable temporary blood supply is efficiently constructed, and the replanting survival rate of the fractured limbs is remarkably improved.

Essentially, the present invention comprises an assembly for transvascular stimulation from within an artery, enabling nerve stimulation to one or more regions of the autonomic nervous system around an artery by a bipolar guidewire having a distal end of a suitable shape, and this stimulation can be performed rapidly or for mapping purposes.

The present invention is related to a drug-coated covered stent the drug coated covered stent is a novel medical device designed to address Type III coronary artery perforations during percutaneous coronary intervention (PCI). This system combines a balloon-expandable stent covered with a biocompatible graft material and coated with cytotoxic drugs at its ends to prevent excess tissue growth and promote endothelialization. through a rapid exchange delivery system, the DCCS can be precisely positioned and expanded within the artery, sealing tears and promoting healing. The device's ultrathin profile and high flexibility enable navigation through tortuous vessels. Key components are a blocking balloon (201), second guidewire (203), covered stent (205), proximal and distal shafts of the delivery system (1, 2, 3, 15 4), stent (5), graft material (6), cytotoxic drug coatings (8, 9), and endothelialization (11). This innovative solution offers a promising approach to managing coronary artery perforations, potentially reducing the need for surgical interventions.

The application discloses an auxiliary instrument for aortic replacement artificial blood vessel surgery, which comprises a collapsible and inflatable bag body which extends into the aorta of a heart to block blood, wherein the bag body is provided with a bag body channel for blood to pass through, and the upper end of the bag body is connected with a drainage tube; the connection end of the drainage tube with the bag body is provided with a drainage tube cavity; the outer side of the drainage tube is provided with a drainage tube through hole for guiding the seepage blood between the bag body and the aorta of the heart into the drainage tube cavity; the drainage tube is respectively provided with a drainage tube channel which is communicated with the bag body channel and is used for sending the blood in the aorta of the heart into an extracorporeal circulation device, an injection channel which is used for injecting or extracting liquid or gas to the bag body so as to make the bag body inflate or shrink, and a seepage blood extraction channel which is used for extracting the seepage blood in the drainage tube cavity; the seepage blood is guided into the drainage tube cavity through the drainage tube through hole, and the seepage blood is extracted through the seepage blood extraction channel, so that the problem of the seepage blood blocking the suture visual field is solved.

The application provides a PPG baseline calibration method for a wearable continuous blood pressure monitoring device, which comprises the following steps: decoupling the relationship between contact pressure and infrared PPG baseline; since pressure is a scalar, the contact pressure change of the measured position can be equivalent to the opposite change of the hydrostatic pressure inside the artery; collecting infrared PPG waveforms under different hydrostatic pressures through two different height postures to model the relationship between contact pressure and PPG waveform, MLP modeling and the setting of a dual-wavelength calibrator; without affecting the extraction of blood pressure related features; enabling the existing blood pressure monitoring algorithm to achieve the A-class standard of BHS in long-term continuous monitoring; the method can be directly deployed in the existing blood pressure monitoring system without modifying the original blood pressure algorithm or model structure; the problem that PPG baseline drift occurs due to long-term wearing of the wearable device and thus continuous and accurate blood pressure monitoring cannot be achieved is solved; and more accurate continuous blood pressure monitoring can be achieved.

The application provides an interventional ventricular auxiliary oxygen generation device, a blood flow channel crosses an aortic valve into a left ventricle from an ascending aorta, a blood inlet of the blood flow channel is located in the left ventricle, a blood outlet is located in the ascending aorta, a first conveying pipe and a second conveying pipe convey hydrogen peroxide and catalase into the left ventricle to generate oxygen and water through reaction, and a pumping unit pumps oxygen-rich blood in the left ventricle to the ascending aorta. The oxygen generation function is added to the ventricular auxiliary device, the oxygen-rich blood in the ventricle is pumped to the ascending aorta through the ventricular auxiliary device, which directly improves the myocardial hypoxia condition and helps the heart recover, and on the other hand, the oxygen-rich blood is pumped into the ascending aorta and directly participates in the systemic circulation, thereby directly and quickly improving the oxygen supply condition of the systemic circulation.

An ischemic cardiopathy diagnosis assistance system includes pressure data acquisition means 11 for acquiring pressure data including proximal pressure Pa in a proximal stenotic segment A1 and distal pressure Pd in a distal stenotic segment A2; intracoronary electrocardiogram data acquisition means 12 for acquiring intracoronary electrocardiogram data made up of a local intracoronary artery electrocardiogram in a neighborhood of the distal stenotic segment; and computational processing means 14 for finding a pressure ratio Pa / Pd between the proximal pressure Pa and distal pressure Pd at a time suitable for diagnosis of ischemic cardiopathy based on these data. The computational processing means temporally associates the pressure data with the intracoronary electrocardiogram data, estimates an analysis period T during which vascular resistance remains stably low from a waveform of the intracoronary electrocardiogram data, and extract the pressure data of the analysis period T, and finds the pressure ratio Pa / Pd from the pressure data.

A method is provided to modulated vascular adaptation within a tumor so that therapy uptake is increased. The method includes providing a pressure directed therapy system having an infusion lumen, an occluder, a pressure sensor to sense pressure distal of the occluder. The distal end of the system is advanced to a target artery of an organ. The pressure in the target artery is reduced by expanding the occluder at the distal end of the system. Then, the therapy is infused through the infusion lumen and into the target artery. Upon sensing decreased pressure and thus vessel adaptation, infusion is stopped until vessel re-adaptation occurs. Then infusion resumes. The infusion continues in a cycle of therapy infusing, sensing pressure and determining vessel adaptation, waiting, and resuming once re-adaptation occurs until the therapy dose is delivered to the patient.

Systems and methods of facilitating determination of risk of coronary artery disease (CAD) based at least in part on one or more measurements derived from non-invasive medical image analysis. The methods can include accessing a non-invasive generated medical image, identifying one or more arteries, identifying, regions of plaque within an artery, analyzing the regions of plaque to identify low density non-calcified plaque, non-calcified plaque, or calcified plaque based at least in part on density, determining a distance from identified regions of low density non-calcified plaque to one or more of a lumen wall or vessel wall, determining embeddedness of the regions of low density non-calcified plaque by one or more of non-calcified plaque or calcified plaque, determining a shape of the more regions of low density non-calcified plaque, and generating a display of the analysis to facilitate determination of one or more of a risk of CAD of the subject.

The invention relates to the technical field of medical instruments, in particular to a common carotid artery piercing sheath with an inflatable balloon, which comprises a first catheter and a second catheter, the first catheter is communicated with the second catheter, and the first catheter is used for being inserted into an artery and used for guiding blood in the artery to enable the blood to flow into the second catheter; a limiting assembly is arranged on the outer side wall of the first catheter and is used for inserting the first catheter into a blood vessel and blocking and closing the blood vessel; the tail end of the second catheter is connected with an adjusting assembly, and the other end, away from the first catheter, of the second catheter is connected with an external conveying pipe. The air bag is divided into a plurality of independent inflation cavities by the diaphragms, and can be inflated and expanded in a partitioned mode in sequence, so that the air bag can adapt to the shape of a blood vessel, uniform sealing attached to the wall of the blood vessel is achieved, and local compression or incomplete sealing caused by deviation of the air bag is avoided; suddenly impact of one-time overall expansion of a traditional air bag on the blood vessel wall is avoided through partitioned inflation, and the risk of injury or spasm of the endangium is reduced.

Some disclosed examples involve controlling, by a control system of an apparatus, a light source system of the apparatus to provide light to a target object on an outer surface of the apparatus and receiving, by the control system, ultrasonic receiver signals from each of a plurality of M ultrasonic receiver elements in a single array, the ultrasonic receiver signals corresponding to ultrasonic waves generated by the target object responsive to the light. Some disclosed examples involve detecting, by the control system, an artery within the target object based on the ultrasonic receiver signals and estimating, by the control system, a blood pressure within the artery based on the ultrasonic receiver signals.

The application discloses a rotating speed regulation system for a modular intra-aortic axial flow pump. The system comprises a flow detection device, a controller and a blood pump driver. The flow detection device is connected with the controller and is used for measuring the descending aorta flow. The axial flow blood pump of the modular intra-aortic axial flow pump is connected with the controller via the blood pump driver, and the blood pump driver is used for driving the axial flow blood pump to operate. The controller is used for executing relevant steps to adjust the rotating speed of the axial flow blood pump to the optimal rotating speed operation. The application can accurately regulate the rotating speed of the axial flow blood pump of the modular intra-aortic axial flow pump, so that the axial flow blood pump always operates at the optimal rotating speed, thereby exerting the best blood flow hemodynamic support effect and minimizing the additional harm to the patient.

A method, system, and devices with an integrated retractable blade system for the intraarterial shunt are disclosed. According to one aspect, the cutting tool may comprise an elongate body where the elongate body has a proximal portion and a distal portion opposite the proximal portion. An inner shaft may extend within the distal portion of the elongate body and the inner shaft may have a proximal end and a distal end and a hub may be coupled to the distal end of the inner shaft. The cutting tool may have a cutting element with the hub coupled with the cutting element and movement of the hub transitions the cutting element between a collapsed position and an expanded position.

The application discloses an aortic circulation pump and a blood pump system. The aortic circulation pump comprises a power transmission part, which is used for being connected with a driving part to transmit power; a rotating part, which is sleeved on the power transmission part to rotate with the power transmission part; a mesh tube, which is sleeved on the outside of the rotating part to protect the rotating part; a supporting mesh tube, which is sleeved on the power transmission part in an openable manner to support the aorta in an open state; and a flow guide pipe, which is sleeved on the outside of the mesh tube and has a blood inlet and a blood outlet. The power transmission part can drive the rotating part to rotate to drive the blood in the aorta to flow into the flow guide pipe from the blood inlet of the flow guide pipe and flow out of the flow guide pipe from the blood outlet. The aortic circulation pump can accelerate the circulation of the blood in the aorta, thereby assisting in improving the blood supply function of the heart. The mesh tube and the flow guide pipe improve the safety in use and the blood flow speed.

The present invention relates to determining a flow profile in an artery from ultrasound imaging data. To this end, a computer-implemented method is provided for determining a flow profile based on arterial measurements, intra-arterial velocities, and asymmetry measures, the arterial measurements, intra-arterial velocities, and asymmetry measures determined from ultrasound imaging data, including B-mode, pulsed wave Doppler, and color or power Doppler ultrasound imaging data.

Apparatus, systems and methods for fracturing calcium in an artery of a patient. Certain embodiments include a diode laser light source, an optical fiber coupled to the laser light source, an expandable member coupled to the optical fiber, and a control system. The control system can be configured to control operating parameters, including a pulse repetition rate. In specific embodiments, the pulse repetition rate can be controlled at a frequency between 1 kHz and 100 kHz. Certain embodiments include a plurality of electromagnetic energy emitters separated by a distance configured to provide motion-enhanced intravenous lithotripsy during use.

The application discloses a kind of central lumen management systems for intra-aortic balloon pump, which includes: regulating device group, multichannel data acquisition module and master module;Wherein: the multichannel data acquisition module is used to collect the monitoring data corresponding to the multiple positions of intra-aortic balloon pump;The master module is used to obtain abnormal data based on monitoring data, and control the regulating device group based on abnormal data to execute corresponding action to intra-aortic balloon pump, to realize the management of the central lumen of intra-aortic balloon pump.The application obtains the monitoring data corresponding to the multiple positions of intra-aortic balloon pump by multichannel data acquisition module, so as to identify the abnormal data of each position of intra-aortic balloon pump by multidimensional monitoring data, identify the abnormal state of the central lumen of intra-aortic balloon pump in all directions, and improve the comprehensiveness of central lumen management.

A reverse flow system for performing vasculature procedures may include a catheter and a flow control system. The catheter may extend from a proximal end to a distal end that is adapted to terminate within a common carotid artery (CCA) and include an occlusion balloon, an inflation lumen in communication with the occlusion balloon, and a working lumen terminating at the distal end of the catheter. The flow control device may be in communication with the working lumen and configured to control a flow rate of fluid through the working lumen and to confirm a full reverse flow of fluid in an internal carotid artery in communication with the CCA and an external carotid artery in communication with the CCA based on a measure related to an amount of force required for the flow control device to achieve the flow rate of fluid through the working lumen.

The utility model discloses a multifunctional pastry stirrer with an adjustable paddle structure, and relates to the technical field of pastry mixing and stirring, and the scheme is as follows: the multifunctional pastry stirrer with the adjustable paddle structure comprises a stirring container, the stirring cover is mounted at the top end of the stirring container; the motor is mounted on the stirring cover; one end of the stirring shaft is mounted at the output end of the motor, and the other end of the stirring shaft extends into the stirring container; the assembly clamping groove is formed in the end part of the stirring shaft, and a locking groove is formed in the inner wall of the assembly clamping groove; a mounting groove is formed in the side wall of the paddle adapter seat, and a multi-state self-adaptive stirring paddle is mounted at the end part of the paddle adapter seat; one end of the first elastic piece is connected with the surface wall of the mounting groove, and the other end of the first elastic piece is connected with a wedge-shaped locking block; the internal arterial fistula plaque can be subjected to rotary cutting, damage to blood vessels is reduced, and the blood vessels of a patient are protected to a great extent.

Disclosed is a method for analyzing a set of images of a coronary artery tissue. The method comprises receiving an OCT image of the coronary artery tissue then segmenting the OCT image into a plurality of regions, including, at least a lumen within the OCT image and then further segmenting the image into distinct tissue types. A first set of measurements for each identified feature of interest is then compiled at a first time, and a second set of measurements at a second time subsequent to the first time. Changes in the coronary artery tissue are then determined using the sets of measurement that are indicative of progression or regression of a diseased state, or prediction of multiple adverse cardiovascular events (MACE) such as cardiac death or myocardial infarction.

Described is a method and device for dilating a tubular anatomical structure. The device and method can be useful for extracting a blood clot in an artery of a mammal by concentrically irradiating an inner wall of the occluded artery using an ultraviolet (UV) laser beam delivered by an optical fiber. Dilation results from photophysical production and release of nitric oxide from the cells lining the arterial wall when UV laser light is projected as a ring beam onto the inner arterial wall.

A system for treating atrial dysfunction, including heart failure and / or atrial fibrillation, that includes one or more pressurizing elements and control circuitry. The one or more pressurizing elements can comprise one or more balloons and can be configured to be positioned in the left atrium, and optionally the pulmonary artery, of a patient's heart. The one or more pressurizing elements can be coupled to one or more positioning structures that can be configured to position the one or more pressurizing elements in the left atrium, and optionally the pulmonary artery. The control circuitry can be configured to operate the one or more pressurizing elements to decrease or increase pressure and / or volume in the left atrium, and optionally the pulmonary artery, in accordance with different phases of the cardiac cycle. The control circuitry can be further configured to operate the one or more pressurizing elements to generate coordinated pressure modifications in the left atrium, and optionally the pulmonary artery.

The utility model belongs to the field of carotid artery stenosis medical instruments, and particularly relates to an autoblood transfusion device. Comprising a filter used for intercepting thrombus, the two ends of the filter are externally connected with backflow pipelines, the backflow pipelines are used for enabling blood in arteries to flow back to veins, the filter comprises a cavity of a pear-shaped structure and a filter element with a conical tail, and the filter element is installed in the cavity of the pear-shaped structure. The cavity of the filter can help blood fluid to move stably, and thrombus generation is reduced. And the conical structure at the tail part of the filter element can effectively reduce blood turbulence, and can store thrombus falling from a surgical part plate, so that the risk of blockage of the filter screen is reduced.

The invention provides an in-aorta balloon counterpulsation system control method based on hemodynamics, and relates to the technical field of medical system control. According to the method provided by the invention, hemodynamic monitoring signals of a target user are obtained in real time, wherein the hemodynamic monitoring signals comprise the total heart end diastole volume, the rate of variation per stroke, extravascular lung water, the heart index and the cardiac output; based on a pre-trained neural network model, determining heart indexes corresponding to multiple moments of the target user in a future time period according to the hemodynamic monitoring signal; and under the condition that the heart index corresponding to the first moment of the target user is smaller than a first threshold value, generating a first request, and in response to an input confirmation operation on the first request, starting the intra-aortic balloon counterpulsation system at the first moment. According to the method provided by the invention, the start and stop of the balloon counterpulsation system in the aorta can be accurately controlled, and the processing efficiency and accuracy are improved.

The invention belongs to the technical field of medical apparatuses and instruments, and particularly relates to a needle inserting auxiliary device suitable for arteriovenous puncture. The acupuncture needle device suitable for arteriovenous puncture comprises a puncture needle, a mounting tube body and a pop-up assembly, the puncture needle comprises a needle body, a sleeve, a fixed needle wing and a connecting tube; the mounting pipe body comprises a containing cylinder, a positioning part and a rear cover body; the pop-up assembly comprises a movable push rod, a limiting sleeve and an elastic limiting piece, and the puncture needle is detachably arranged at the end of the movable push rod. When the puncture needle is used, a medical worker obtains the puncture depth between the puncture needle and the central position of the relative vein or artery according to the color ultrasound conditions of the vein or artery of the puncture part of different patients, and then adjusts the position of the limiting sleeve on the movable push rod, so that the popping distance of the movable push rod can exactly pierce the relative vein or artery; the puncture needle can be quickly and accurately inserted into the relative vein or artery, pain response of a patient can be reduced, and the puncture success rate of medical staff is increased.

The invention discloses a renal artery balloon catheter device for local cold perfusion, and relates to the field of renal artery balloon catheters, the renal artery balloon catheter device comprises a catheter main body, and the outer surface of the catheter main body is fixedly connected with a mounting ring tube. The renal artery balloon catheter device for local cold perfusion is provided with the two fixing liquid bags, the catheter body can be stably fixed to the inner wall of the artery, the catheter is effectively prevented from sliding and shifting in the flushing process, and it is ensured that the cold perfusion position is accurate. Meanwhile, the sealing liquid bag is tightly attached to the inner wall of the artery after being swelled, reliable sealing is formed, and backflow of low-temperature liquid is prevented. The through holes in the mounting ring pipe are annularly and uniformly distributed, so that the cold liquid uniformly enters the liquid bag, the expansion uniformity is ensured, and the fixing and sealing effects are further improved. In the flushing process, the valve reducing mechanism enables the fixed liquid bag and the sealed liquid bag to be always kept plump, low-temperature liquid evenly flows out through the liquid outlet holes, pressure is reduced, the artery wall is prevented from being damaged, and stable and efficient cold perfusion on the kidney is achieved.