52 results about "Coronary sinus" patented technology

Devices, systems, and methods for causing retrograde oxygenated blood flow in at least a portion of the venous system of the myocardium are disclosed. Devices and methods include a method for causing retrograde oxygenated blood flow in at least a portion of the venous system of the myocardium, the method comprising: implanting a variable occluder in a coronary sinus region proximate a left atrium, wherein the variable occluder is configured to gradually increase a level of blood flow restriction over a period of days to enable a venous system of the myocardium to compensate for increased pressure caused by the gradual increase in the level of blood flow restriction; and following venous system compensation, shunting oxygenated blood flow into the coronary sinus to cause retrograde flow of oxygenated blood in at least a portion of the venous system of the myocardium to thereby enable revascularization of the myocardium.

Provided in the present invention is a coronary sinus balloon counterpulsation catheter, comprising a catheter body and a balloon. The catheter body is provided with a first channel and a second channel that extend through the catheter body along the axial direction thereof. The first channel is eccentric to the catheter body. A cross-section of the second channel comprises a first contour line and a second contour line. The first contour line is at least a part of a first circle. The second contour line is at least a part of a second circle. The first contour line is closer to the first channel than the second contour line, and concave sides of the first contour line and the second contour line both face the first channel. The width of the second channel satisfies a predetermined relationship. The balloon is in sealed connection with a distal outer peripheral surface of the catheter body and is in communication with the second channel. The arrangement mode of the first channel and the second channel enables a filling liquid flowing in the second channel to have a relatively low resistance and a relatively high flow rate. In this way, the coronary sinus balloon counterpulsation catheter can use a liquid such as normal saline instead of a gas as a filling medium, thereby avoiding the occurrence of air embolism caused by balloon rupture and improving the safety of use.

A blood flow pathway is formed between a left atrium and a coronary sinus for relieving elevated left atrial pressure. The treatment method includes providing first and second delivery catheters, wherein a medical device is carried by the second delivery catheter. A side outlet opening of the first delivery catheter is positioned within the coronary sinus and oriented toward a left atrium. An anchor on the first delivery catheter contacts an inner surface of the coronary sinus for stabilization. A distal portion of the second delivery catheter is advanced through the side outlet opening. A puncture component is then passed through a target wall portion for creating the blood flow pathway. The medical device is positioned in the opening.

A stabilizer sleeve is disclosed for use with cardiac implantable electronic device leads. The sleeve comprises a tubular body sized to receive the lead and shaped to bias the lead toward a desired anatomical location, thereby reducing migration, dislodgement, and interference with cardiac structures. The sleeve may be introduced with the lead as a unitary assembly or added after lead placement. Various embodiments include a slitted body for expansion, radiopaque markers for visualization, detachable nose-cone tips for guidewire tracking, and antimicrobial coatings. The sleeve may be formed of polymers, alloys, or composite materials, and may include features such as texturing or anchoring projections for tissue engagement. Applications include positioning within a tricuspid valve commissure to minimize regurgitation and stabilizing left ventricular leads within branches of the coronary sinus. The device and methods described provide improved long-term stability and performance of implanted cardiac leads.

A cardiac microperfusion device is disclosed that includes an integrated flow restrictor and a diverter from the left atrium to modulate flow within the blood vessel, particularly flow within the coronary sinus. Related methods and systems are also disclosed.

The present invention provides a pharmacological wearable cardioverter defibrillation system for conducting cough assisted pharmacological cardioverter defibrillation during onset of a sudden arrhythmia. The system comprises a WCD defibrillator worn by the patient, a drug mix contained either in a reservoir / pump or in an inhaler, and a miniature monitor. The drug mix in the reservoir / pump is equipped with a pump for pumping the drug mix via an indwelling catheter to the coronary sinus while the drug mix in the inhaler is inhaled directly to the lungs. When a sudden arrhythmia is detected by a sensing electrode of WCD, the following steps are carried out: prompting the patient to take the drug mix, prompting the patient to start forceful coughing, and delivering electric shock(s) under either one of the two circumstances that the patient is unable to start coughing or the arrhythmia is not terminated.

To provide a method and a system for signal processing.SOLUTION: A method is provided. The method is implemented by a device orientation engine being executed by one or two or more processors. The method includes determining a movement between each group of electrodes of a catheter to provide movements, and determining a total movement of electrodes of the catheter. The method also includes removing a standard component from the movements and the total movement and outputting a movement indication for the catheter on the basis of the movements and the total movement with the standard component.SELECTED DRAWING: Figure 1

The utility model provides a coronary sinus constriction system and a conveying device thereof, the conveying device comprises a line and a conveying mechanism, the line is used for penetrating and winding on a near-end opening along the circumferential direction of the near-end opening of the coronary sinus constriction device, and the conveying mechanism is connected with the line; the conveying mechanism can control the line to be separated from the near-end opening, or the conveying mechanism is controlled to be separated from the line, or the conveying mechanism is provided with a first catheter, the first catheter is provided with a first hollow channel, and the two ends of the line penetrate into the first hollow channel from the far end of the first catheter and penetrate out of the first hollow channel from the near end of the first catheter; the wire is separated from the proximal opening. The coronary sinus constriction system comprises the conveying device, and the conveying device can load, convey, recycle and release the coronary sinus constriction device.

A method and devices for relieving pressure in the left atrium of a patient's heart is disclosed. The method includes using an ablative catheter in a minimally invasive procedure to prepare an opening from the coronary sinus into a left atrium of the patient's heart. Once the opening is prepared, the opening may be enlarged by a technique such as expanding a balloon within the opening. A stent is then placed within the coronary sinus of the patient, with a transverse portion expanding within the opening, allowing blood to flow from the left atrium to the coronary sinus and then to the right atrium. Pressure within the left atrium is thus relieved.

This application relates to a coronary sinus and left atrium shunt system, belonging to the field of medical device technology. The system described in this application, by setting up a puncture component and a shunt component including a cutter, allows for the cutting of a portion of myocardial tissue between the coronary sinus and the left atrium, forming a shunt orifice. This establishes a shunt channel between the coronary sinus and the left atrium, effectively avoiding the embolism risk associated with atrial septal shunts and improving coronary artery blood perfusion, potentially benefiting myocardial recovery.

Devices, systems, and methods for causing retrograde oxygenated blood flow in at least a portion of the venous system of the myocardium are disclosed. Devices and methods include a method for causing retrograde oxygenated blood flow in at least a portion of the venous system of the myocardium, the method comprising: implanting a variable occluder in a coronary sinus region proximate a left atrium, wherein the variable occluder is configured to gradually increase a level of blood flow restriction over a period of days to enable a venous system of the myocardium to compensate for increased pressure caused by the gradual increase in the level of blood flow restriction; and following venous system compensation, shunting oxygenated blood flow into the coronary sinus to cause retrograde flow of oxygenated blood in at least a portion of the venous system of the myocardium to thereby enable revascularization of the myocardium.

The invention discloses a device and method for removing a contrast agent in heart local blood, and relates to the field of medical treatment, the removing device comprises a suction catheter, a power pump, a filter assembly and a backflow catheter which are connected in sequence; the coronary artery of the heart body is communicated with the angiographic catheter, the coronary sinus of the heart body is communicated with the suction catheter, the femoral vein or other deep veins of a human body are communicated with the backflow catheter, and the area between the coronary artery and the coronary sinus is a contrast agent delivery area; wherein the filtering assembly is used for removing a contrast agent in blood. When the contrast agent in the blood is removed, the blood containing the contrast agent is pumped out of the heart body through the suction catheter by the power pump, then the contrast agent contained in the blood is removed through the filtering assembly, and then the blood without the contrast agent is conveyed into the human body again through the femoral vein or other deep veins by the backflow catheter. By means of the circulating conveying mode, on one hand, contrast agents in blood can be removed, and on the other hand, excessive blood loss of a patient can be avoided.

Some embodiments of a system or method for treating heart tissue can include a control system and catheter device operated in a manner to intermittently occlude a heart vessel for controlled periods of time that provide redistribution of blood flow. In particular embodiments, the system and methods may be configured to monitor at least one input signal detected at a coronary sinus and thereby execute a process for determining a satisfactory time period for the occlusion of the coronary sinus. In further embodiments, after the occlusion of the coronary sinus is released, the control system can be configured to select the duration of the release phase before the starting the next occlusion cycle.

System and method for deploying a flow restriction device in patient vascular and recapturing and repositioning the flow device after full or partial deployment. Disclosed systems and methods permit confirmation of device placement, such as by measuring a pressure drop across the partially or fully deployed device in the coronary sinus before release of the device and permanent implantation.

This invention discloses a catheter assembly and a method for releasing a stent, comprising a delivery catheter for delivering a stent, and a positioning catheter for the catheter assembly. The positioning catheter includes a first end and a second end, and the delivery catheter includes an output end for delivering the stent. The first end is connected to the output end, and the end of the second end is circular, with at least three reference points distributed on the end of the second end. By fixing the catheter assembly to the coronary sinus wall outside the coronary ostium, making the end of the second end flush with the coronary ostium, and by adjusting the direction of the angiography machine, the three reference points are aligned in a straight line on the angiography machine image. The angiography machine's viewing angle, the end of the second end of the positioning catheter, and the coronary ostium are all aligned. At this point, stent delivery and release are performed. By observing the angiography machine, the stent is accurately released to the coronary ostium, avoiding excessive stent dislodgement or failure to completely cover the coronary ostium, thus ensuring accurate stent positioning.

The present invention is a high resolution, multi-function, conformal electronics device generally having a flexible and stretchable, high-density electrode array, integrated with a catheter (e.g., balloon catheter) for mapping, ablating, pacing and sensing of cardia tissue associated with heart arrhythmias. The active sensing electrode array can acquire diagnostic information including electrical (e.g., electrograms), mechanical (e.g., strain measurements), impedance (e.g., resistance), metabolic (e.g., pH or NADH measurement) from the underlying heart tissue surface with which it is in contact. The electrode array may be designed to be of various sizes and shapes to conform to the targeted cardiac tissue architecture (e.g. atrial, ventricle, right ventricular outflow tract, coronary sinus, pulmonary veins, etc.) corresponding to the specific type of cardiac arrhythmia. The present invention can precisely locate the source of arrhythmia as described above and deliver therapy from the same electrode array. This is achieved using a capacitive sensing electrode array that can not only monitor but also deliver electrical stimulation.

A device for processing cardiac signals including a memory receiving input data sets including a plurality of P wave segments associated with an electrocardiogram track and with an acquisition time window, and a plurality of coronary sinus signals associated with the same acquisition time window and having one or more activation sequence(s). The device includes an extractor arranged, for a given input data set, to determine for at least some P wave segments of the given input data set a wave polarity profile type, at least one extremum feature. The extractor is also arranged to determine, for each group of track P wave data, a set of track P wave features comprising a polarity profile type, a data set extremum feature value for each calculated extremum feature type and an integral value determined based on the data of the corresponding group of track P wave data.

Devices, systems, and methods for causing retrograde oxygenated blood flow in at least a portion of the venous system of the myocardium are disclosed. Devices and methods include a method for causing retrograde oxygenated blood flow in at least a portion of the venous system of the myocardium, the method comprising: implanting a variable occluder in a coronary sinus region proximate a left atrium, wherein the variable occluder is configured to gradually increase a level of blood flow restriction over a period of days to enable a venous system of the myocardium to compensate for increased pressure caused by the gradual increase in the level of blood flow restriction; and following venous system compensation, shunting oxygenated blood flow into the coronary sinus to cause retrograde flow of oxygenated blood in at least a portion of the venous system of the myocardium to thereby enable revascularization of the myocardium.

A computer device for processing cardiac signals comprises: - a data storage (114) arranged to receive input data sets each comprising a plurality of P wave segments each associated with an electrocardiogram track and with an acquisition time window, and a plurality of coronary sinus signals associated with the same acquisition time window and having one or more activation sequence, - an input module comprising a plurality of classifiers, each associated with a respective atrial tachycardia class and arranged to receive an input data set, and to return a value indicating the probability that the input data set indicates an atrial tachycardia which belongs to the associated atrial tachycardia class, each classifier being further associated with a respective confusion matrix, said atrial tachycardia classes being arranged into a hierarchy made of layers each comprising one more node, each node of a given layer being connected to at least one other node in the hierarchy, only part in the layer immediately above and / or in the layer immediately below said given layer in said hierarchy, - a Bayesian engine comprising a prevalence matrix for pair of classifiers which atrial tachycardia classes are connected in said atrial tachycardia class hierarchy, arranged to receive a set of assessments comprising an atrial tachycardia class probability for each classifier, and to process said set of assessments according to the confusion matrices associated with the classifiers and according to said prevalence matrices in order to determine an updated set of assessments which maximizes the expression (I), where Z i are the updated set of assessments values, Y i are the set of assessments, YC i represents the states of the child nodes of the classifier associated with Y i in said atrial tachycardia class hierarchy, and N is the total number of classifiers, said device being arranged to receive an input data set, to process it with the input module, to derive therefrom a set of assessments provided to said Bayesian engine, and to return one or more atrial tachycardia information derived from said updated set of assessments.

The invention discloses a myocardial microvascular perfusion auxiliary system. The myocardial microvascular perfusion auxiliary system comprises a guide sheath and a balloon catheter device. The balloon catheter device comprises a catheter, and a balloon and a connector are arranged on the catheter. The catheter is provided with a center channel, a gas channel and an air pressure measuring channel, the center channel is through and communicated with the first blood pressure sensor through the connector and the first pressure measuring extension pipe, and the gas channel is communicated with the interior of the balloon and the connector and communicated with the gas driving module through the gas conveying pipe. The air pressure measuring channel is communicated with the interior of the balloon and the connector and communicated with the pressure sensor through the air pressure measuring pipe. The guiding sheath is communicated with the second blood pressure sensor through the pressure measuring connector via the second pressure measuring extension tube. Pressure measuring chips in the first blood pressure sensor, the pressure sensor and the second blood pressure sensor are connected with the signal acquisition module, and the signal acquisition module and the gas driving module are connected with the control module. The balloon provided by the invention can effectively reduce the risk of vascular wall injury and thrombosis caused by complete occlusion of coronary sinus.

To provide a method for treating a heart condition by perfusing a drug to an unarrested beating heart of a patient.SOLUTION: A closed circuit may be formed by using a first drug delivery catheter 122 positioned in a patient's right coronary artery, a second drug delivery catheter 124 positioned in the patient's left main coronary artery, a drug collection catheter positioned in a coronary sinus, the coronary artery, the coronary venous system, and an external membrane oxygenator 120 interspersed between the venous and arterial branches. A drug for treating a heart condition may be perfused through the closed circuit.SELECTED DRAWING: Figure 1A

An ablation system, configured to create a shunt between a left atrium and a coronary sinus of a patient, includes an ablation device comprising a proximal body defining a distal-facing surface configured to contact the coronary sinus wall, a distal body defining a proximal-facing surface positioned opposite the distal-facing surface and configured to contact the left atrium wall, and first and second heating elements disposed on the distal-facing and proximal-facing surfaces, respectively. The heating elements are configured to ablate tissue between the left atrium and the coronary sinus of the patient to create the shunt. The system further includes an expandable dilation element configured to dilate a puncture formed through the coronary sinus wall and the left atrium wall to facilitate introduction of the distal body of the ablation device into the left atrium.

Example systems, devices, and techniques are described for imaging data-based assistance for a coronary sinus reducer implant procedure. An example medical system includes memory configured to store imaging data of a patient and processing circuitry communicatively coupled to the memory. The processing circuitry is configured to obtain the imaging data. The processing circuitry is configured to execute one or more machine learning models to determine, based on the imaging data, a likelihood of success of a coronary sinus reducer stent implant procedure for the patient. The processing circuitry is configured to output an indication of the likelihood of success.

The invention provides a key target potential identification method in atrial fibrillation catheter radiofrequency ablation, which comprises the following steps of: in an atrial fibrillation state, reconstructing anatomical shells of a left atrium (LA) and a right atrium (RA) through a system, performing two-stage electrogram acquisition by adopting a catheter, and marking a KSPs region on a three-dimensional anatomical model; performing point-by-point ablation on the marked KSPs area; after the key superimposed potential (KSPs) is ablated, the globally disordered atrial electrical activity tends to be ordered; if atrial fibrillation is converted into regular atrial velocity (AT), the AT is regarded as an atrial fibrillation driving focus, and excitation mapping and ablation need to be further carried out until sinus rhythm is recovered; after the sinus rhythm is recovered, burst pacing stimulation is carried out again through the coronary sinus catheter, and the non-inductivity of the atrial fibrillation is verified; and if the atrial fibrillation still can be induced, repeating the steps a, b and c, and searching and ablating the residual KSPs until the atrial fibrillation cannot be induced. The KSP identification and ablation method provided by the invention is remarkably improved in the aspects of mechanism understanding, mapping means, ablation strategies and clinical outcome.

Devices, systems, and methods for causing retrograde oxygenated blood flow in at least a portion of the venous system of the myocardium are disclosed. Devices and methods include a variable occluder for implantation in a coronary sinus region proximate a left atrium, wherein the variable occluder is configured to gradually increase a level of blood flow restriction over a period of days to enable a venous system of the myocardium to compensate for increased pressure caused by the gradual increase in the level of blood flow restriction. Following venous system compensation, oxygenated blood flow is shunted into the coronary sinus to cause retrograde flow of oxygenated blood in at least a portion of the venous system of the myocardium to thereby enable revascularization of the myocardium.

The present invention relates to an implantable lead assembly comprising an implantable first lead, an implantable second lead, and a control unit, to which the first and the second leads are electrically connected through connector lines, wherein the control unit is configured to establish a potential difference between the first and second leads so that an electric current can flow between the two leads, the first lead is configured to be positioned in the right ventricle of the heart, and the second lead comprises a coil comprising an uninsulated portion at the distal end thereof, wherein the uninsulated portion is configured to be positioned in the coronary sinus and in a left lateral vein in the left ventricular myocardium, and optionally a central lumen passing longitudinally through said coil.

An implantable medical system includes an implantable catheter advanceable into a coronary sinus of a patient's heart. A guide element and an implantable lead receivable in the side lumen is advanceable through an angled opening of the catheter to be deflected laterally away from the catheter at the deflection angle to position the at least one testing electrode or at least one pacing electrode, respectively, in a myocardium of the patient's heart when the distal portion of the catheter is positioned in the coronary sinus.

A cerclage operation device provided with position fixing device allowing the position of the cerclage operation device used in a heart valve or pacemaker implantation operation to be fixed to prevent movement of the cerclage operation device and maintain the cerclage operation device at the correct position after the operation. The cerclage operation device provided with position fixing device including a cerclage wire, coronary sinus tube which is inserted into a coronary sinus and has a lumen formed therein, tricuspid valve tube which crosses a tricuspid valve and has a lumen formed therein, and the position fixing device which is bonded to one side of an outer circumferential surface of the coronary sinus tube and prevents movement of the coronary sinus tube, wherein the coronary sinus tube and tricuspid valve tube are coupled to each other at an upper side and separated from each other at a lower side.

The utility model provides a coronary sinus constriction device and implantation system, the coronary sinus constriction device is hourglass-shaped, the coronary sinus constriction device comprises a first support section, a second support section and a central necking section, the central necking section is connected between the first support section and the second support section, the first supporting section is of a first net rack structure formed by cutting a first metal pipe, or the first supporting section is of a first net rack structure formed by weaving a first wire material; the second supporting section is of a second net rack structure formed by cutting a second metal pipe, or the second supporting section is of a second net rack structure formed by weaving a second wire material; the central necking section is of a third net rack structure formed by weaving third wires, and the third wires are made of shape memory alloy. The implantation system comprises the coronary sinus constriction device, the action effect of the supporting section of the coronary sinus constriction device and the action effect of the central necking section of the coronary sinus constriction device have small mutual influence, and the diameter reducing effect is stable.