29 results about "Coronary sinus" patented technology

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 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.

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.

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.

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.

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.

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.

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 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.

Devices and methods are disclosed for the treatment or repair of regurgitant cardiac valves, such as a mitral valve. An illustrative annuloplasty device can be placed in the coronary sinus to reshape the mitral valve and reduce mitral valve regurgitation. An improved protective device can be placed between the annuloplasty device and an underlying coronary artery to inhibit compression of the underlying coronary artery by the annuloplasty device in the coronary sinus. In addition, the protective device can inhibit compression of the coronary artery from inside the heart, such as from a prosthetic mitral valve that exerts radially outward pressure toward the coronary artery. The annuloplasty device can also create an artificial inner ridge or retaining feature projecting into the native mitral valve region to help secure a prosthetic mitral valve.

The present invention relates to a system and method for transcatheter treatment for tricuspid regurgitation. The system for transcatheter treatment for tricuspid regurgitation, according to one preferred embodiment of the present invention, includes: the coronary sinus tube inserted into the coronary sinus; and the tricuspid valve tube traversing the tricuspid valve, wherein the coronary sinus tube and the tricuspid valve tube communicate with each other or are adjacent to each other within a range of predetermined length at an upper side and are separate from each other at a lower side, and a blocking member for blocking a space generated by incomplete closing of the tricuspid valve is provided at a lower part of the tricuspid valve tube or between the coronary sinus tube and the tricuspid valve tube.

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=1NPziyi∏i=1NPyiyci where zi are the updated set of assessments values, yi are the set of assessments, yci represents the states of the child nodes of the classifier associated with yi 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.

Devices and methods are disclosed for the treatment or repair of regurgitant cardiac valves, such as a mitral valve. An illustrative annuloplasty device can be placed in the coronary sinus to reshape the mitral valve and reduce mitral valve regurgitation. An improved protective device can be placed between the annuloplasty device and an underlying coronary artery to inhibit compression of the underlying coronary artery by the annuloplasty device in the coronary sinus. In addition, the protective device can inhibit compression of the coronary artery from inside the heart, such as from a prosthetic mitral valve that exerts radially outward pressure toward the coronary artery. The annuloplasty device can also create an artificial inner ridge or retaining feature projecting into the native mitral valve region to help secure a prosthetic mitral valve.

The application discloses a stent conveying device, relates to the technical field of medical devices, and comprises a first conveying handle and a conveying pipe fixed at one end of the first conveying handle, a rack is slidably arranged in the first conveying handle, an outer pipe is slidably arranged in the conveying pipe and is fixed at the end of the rack, a gear transmission mechanism is engaged above the rack, a knob one extending outside the first conveying handle is connected to the input end of the gear transmission mechanism, and a leading tip head is fixed at the end of the outer pipe away from the rack. The application drives the fixed shaft two and the spur gear two to synchronously rotate by rotating the knob one, drives the spur gear one to reversely rotate around the fixed shaft one, drives the rack to slide along the inner bottom surface of the first conveying handle through the meshing transmission of the spur gear one and the rack, drives the outer pipe to advance, and makes the coronary sinus stenosis stent gradually expand to the target position of the coronary sinus, so that the conveying and deployment operations are simplified, and the operation complexity is reduced.

The utility model provides a coronary sinus constriction system. The coronary sinus constriction system comprises a coronary sinus constriction device, the coronary sinus constriction device is of a layer net structure, the layer net structure extends in the axial direction to form a lumen channel, the lumen channel comprises a first expansion section, a reducing section and a second expansion section which are sequentially connected, and the inner diameter of the first expansion section is larger than that of the second expansion section; a plurality of lug-shaped structures are arranged at the end of the first expansion section in the circumferential direction at intervals. The conveying device comprises a conveying steel cable; the first end of the spiral connecting piece is connected with the conveying steel cable, and the second end of the spiral connecting piece rotates and is sequentially limited and blocked with the multiple ear-shaped structures, so that the coronary sinus constriction device is detachably connected with the conveying steel cable. The coronary sinus constriction system solves the problem that a coronary sinus constriction system in the prior art is inconvenient to use.

The utility model provides a kind of lumen flow regulator and coronary sinus constriction device. Lumen flow regulator includes layer net structure, and layer net structure forms lumen passage along axial extension, and lumen passage includes first expansion part, narrowing part and second expansion part connected in turn, and the inner diameter of first expansion part and second expansion part is all greater than the inner diameter of narrowing part, wherein, narrowing part includes main body section and transition section located at both ends of main body section, two transition sections are connected with first expansion part and second expansion part respectively, and the mesh size of transition section is greater than the mesh size of main body section and the mesh size of first expansion part and second expansion part. The utility model solves the problem of poor postoperative adaptability of lumen flow regulator in the prior art.

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.

Devices and methods are disclosed for the treatment or repair of regurgitant cardiac valves, such as a mitral valve. An illustrative annuloplasty device can be placed in the coronary sinus to reshape the mitral valve and reduce mitral valve regurgitation. An improved protective device can be placed between the annuloplasty device and an underlying coronary artery to inhibit compression of the underlying coronary artery by the annuloplasty device in the coronary sinus. In addition, the protective device can inhibit compression of the coronary artery from inside the heart, such as from a prosthetic mitral valve that exerts radially outward pressure toward the coronary artery. The annuloplasty device can also create an artificial inner ridge or retaining feature projecting into the native mitral valve region to help secure a prosthetic mitral valve.

The present application discloses an annuloplasty device comprising a detachable and elastic elongated displacement unit for insertion into a coronary sinus (CS) adjacent to a mitral valve, a proximal reversibly deployable portion reversibly deployable to a deployed state for positioning against a tissue wall at an entrance of the CS, a distal anchoring portion movable relative to the proximal deployable portion in a longitudinal direction of the displacement unit to an activated state in which a shape of the annulus is modified to a modified shape, a stent arranged around the displacement unit and movable relative to the displacement unit in the longitudinal direction for insertion into the CS, and wherein the stent is releasably connected to the delivery device and radially arranged between the displacement unit and the proximal deployable portion in a radial direction.