27 results about "Atrial cavity" patented technology

The invention discloses a left auricle plugging device provided with a real-time atrial pressure monitoring chip, and particularly relates to the technical field of left auricle plugging, the left auricle plugging device comprises a plugging device body and a connector, the top end of the connector is provided with a signal supply module, and the signal supply module is located in the plugging device body; according to the left atrial appendage plugging device, after the inductor in the nut generates a voltage signal, the signal can be transmitted to the low-noise operational amplifier and amplified, meanwhile, the electromagnetic interference between the noise of a circuit and the outside world is restrained, and the plugging device can be used for plugging the left atrial appendage of the left atrial appendage of the left atrial appendage. The physical deformation is converted into corresponding electric signals, the electric signals are transmitted to an in-vitro receiving terminal through an antenna, and a doctor can indirectly judge the recovery condition of the atrial contraction function of the patient according to the pressure signal trend.

A clip and method provide for surgically minimizing or eliminating an atrial appendage of the patient using a clip. The clip includes first and second elongate beam. The clip includes a dual side spring assembly configured to urge the first and the second elongate beams from an open V-shaped position to a parallel closed position. The dual side spring assembly includes a right-side spring and a left-side spring having first and second terminal ends attached to distal sections respectively of the first and the second elongate beams. The right and the left-side springs extend proximally to a respective proximal bend connected by a lateral element that maintains alignment to resist lateral splaying movement of the first and the second elongate beams.

An implant (1) for occluding a left atrial appendage comprises a radially expansible element (2) configured to shift between a collapsed configuration and an expanded configuration. The radially expansible element (2) comprises a pair of core elements (3) which extends in direction of a longitudinal axis (4) and which have a tubular shape. The pair of core elements (3) comprises a first core element (5) and a second core element (6). The first and second core elements (5, 6) are stacked in direction of said longitudinal axis (4). The pair of core elements (3) has an outer circumference (7) and the first core element (5) and the second core element (6) each enclose a cavity (8). The first core element (5) and the second core element (6) are rotatable relative to one another. The radially expansible element (2) further comprises a driving and locking element arranged in the respective cavities (8) of the pair of core elements (3) for rotating the first core element (5) and the second core element (6) relative to one another so as to move the radially expansible element (2) from the collapsed configuration into the expanded configuration and for locking the first core element (5) and the second core element (6) relative to one another, wherein the driving and locking element is adapted for being engaged with a rotatable pin mounted at the tip of an elongated catheter member.

To provide a device and method for creating a perforation in the atrial septum while using the curvature of a distal portion of the device to automatically stop the delivery of energy to the atrial septum upon completion of a puncture.SOLUTION: A puncturing device configured to create a puncture in a tissue comprises an elongate member comprising a proximal portion defining a longitudinal axis along the length of the elongate member. The elongate member further comprises a flexible distal portion that curves away from the longitudinal axis, and a distal tip configured to deliver energy to the tissue. A sensing element placed on the flexible distal portion of the elongate member detects the curvature of the distal portion. Thereby, when the flexible distal portion of the elongate member is straightened, energy is delivered to the distal tip; and, when the flexible distal portion of the elongate member is curved, energy is not delivered to the distal tip.SELECTED DRAWING: Figure 1

The invention relates to a novel multivalent atrial appendage occluder of hybrid design based on two different atrial appendage occluders, one having a proximal disk-shaped cover and a second version without a proximal cover. The two occluder variants each provide relevant application solutions by themselves. The invention further relates to multiple specified, universal devices composed of predominantly rotationally symmetrical individual parts for producing these different LAA occluders (LAA=Left Atrial Appendage) which are graded in different sizes, for the interventional, catheter-based closure of the left atrial appendage. Axially and radially oriented hooks support the secure and gentle anchoring of the occluders 1 in the retaining area of the atrial appendage 26. As a result, the use of substantially smaller access ports in the interventional application is possible. The two atrial appendage occluder variants, with and without proximal cover 14, can be inserted using the same controllable access port and can be implanted in various sizes individually or in combination with one another and likewise as a hybrid variant of two occluders, one without a proximal cover (14) and one subsequently with a proximal cover (14) in one and the same atrial appendage (24) as shown in FIG. 17. The two atrial appendage occluder variants can each be released during the implantation phase in three stages until they are fully unfolded.

The invention discloses an atrium modeling method based on nnUnet, and belongs to the field of digital medical treatment. The method comprises the following steps: firstly, obtaining a trained nnUnnet-v2 deep learning network, and obtaining adventitia areas of a left atrium and a right atrium of atrial LGE-MRI image data to be subjected to atrial modeling based on the trained nnUnnet-v2 deep learning network; then myocardial areas of the left atrium and the right atrium and blood pool areas of the left atrium and the right atrium are obtained, the strength of all myocardial signal mark points of the left atrium and the right atrium and the strength of all blood pool signal mark points of the left atrium and the right atrium are obtained, and finally fibrosis areas of the left atrium and the right atrium are obtained and subjected to fibrosis labeling. Then linear interpolation is carried out on the basis of the myocardial areas of the left atrium and the right atrium subjected to fibrosis labeling, and a primary atrium three-dimensional model is obtained; and repairing and optimizing the primary atrium three-dimensional model to obtain the atrium three-dimensional model. The method can be widely applied to the fields of atrial disease research, treatment planning and related medical image analysis.

Systems and methods for extracting a two-dimensional short-axis view of a left atrial appendage are provided. The method includes acquiring, by an ultrasound probe, a two-dimensional long-axis ultrasound image view of a left atrial appendage. The method includes automatically detecting, in the two-dimensional long-axis ultrasound image view, a first point on the rotational artery side of the left atrial appendage and a second point on the left atrial spine side of the left atrial appendage. The method includes acquiring, by the ultrasound probe, an ultrasound volume including the left atrial appendage. The method includes automatically extracting an ultrasound image from the ultrasound volume substantially in a plane extending through the first point and the second point. The method includes causing a display system to present the ultrasound image.

The application provides a guide system for patent foramen ovale (PFO) interventional closure device guide wire, which comprises a sheath tube dilator assembly, a guide tube component, a first guide wire and a second guide wire; the sheath tube dilator assembly comprises a fixed sheath tube component and a dilator component, the tube structure of the dilator component is arranged in the tube structure of the fixed sheath tube component; the sheath tube dilator assembly has an operation part for controlling the movement of the distal end of the sheath tube dilator assembly to the fossa ovalis of the atrial septum; the tube structure of the guide tube component is rotatably and slidably arranged in the tube structure of the dilator component, and the distal end of the guide tube component is used for entering the PFO tunnel from the fossa ovalis of the atrial septum, thereby establishing a left atrial passage. The application can significantly improve the success rate and efficiency of the operation, and effectively solves the guide wire passing difficulty problem caused by the small size, adhesion or anatomical variation of the PFO tunnel by using the step-by-step strategy of first mechanically expanding the PFO tunnel by using the guide tube component and then exploring the path by using the second guide wire.

An atrial shunt device, relating to the technical field of medical treatment. The atrial shunt device specifically comprises a first isolation membrane (4), the first isolation membrane (4) having a U-shaped structure in which the side surface is of a closed structure and the middle portion is recessed inwardly; and a second isolation membrane (5), the second isolation membrane (5) having a U-shaped structure in which the side surface thereof is of a closed structure and is arranged in the first isolation membrane (4), and the middle portion of the second isolation membrane (5) is recessed inwardly. The tops of the second isolation membrane (5) and the first isolation membrane (4) all have an arc-shaped structure, and two ends of the second isolation membrane (5) and the first isolation membrane (4) are all connected by means of arc-shaped connection portions (10), so as to form a sealed cavity between the second isolation membrane (5) and the first isolation membrane (4). The sealed cavity is internally provided with a support body for maintaining the shapes of the second isolation membrane (5) and the first isolation membrane (4). The atrial shunt device can block cells of the interatrial septum of a patient by means of the first isolation membrane (4) and the second isolation membrane (5), so as to avoid the reduction of the cross section of a shunt pathway due to proliferated cells at an interatrial septum orifice passing through first supporting strips (6) and second supporting strips (7), thereby improving the use effect.

The invention discloses an atrial septum puncture needle, a puncture mechanism and a puncture instrument, and relates to the field of medical instruments.The puncture needle body comprises a puncture section and a pushing section, and the near end of the puncture section is movably connected with the far end of the pushing section; the far end of the puncture section is provided with a triangular prism surface, the puncture section can axially rotate along the pushing section, the peripheral surface of the near end of the puncture section is provided with a clamping groove, the clamping groove is of a groove structure which is formed in the mode that the outer wall of the puncture section is sunken in the radial direction, the far end of the pushing section is provided with a clamping ring, the clamping ring is of a protruding structure which is formed in the mode that the outer wall of the pushing section protrudes in the radial direction, and the outer wall of the clamping ring abuts against the outer wall of the clamping groove. When a puncture operation is carried out, the puncture section is rotated, the atrial septum is punctured on the three-prism surface and cut in the radial direction at the same time, so that the puncture section can puncture the atrial septum more easily, the puncture force of a doctor operating the puncture needle body is small, and the phenomenon that after the atrial septum is punctured, the puncture needle cannot be damaged is avoided. And the puncture needle body punctures the atrial wall to cause operative complications, so that the safety of an operation is improved.

Systems and methods for automatically acquiring an ultrasound volume to extract a two-dimensional short axis view of a left atrial appendage are provided. The method includes acquiring, by an ultrasound probe, a two-dimensional long axis ultrasound image view of a left atrial appendage. The method includes automatically detecting a first point on a circumflex artery side of the left atrial appendage and a second point on a left atrial ridge side of the left atrial appendage in the two-dimensional long axis ultrasound image view. The method includes acquiring, by the ultrasound probe, an ultrasound volume comprising the left atrial appendage. The method includes automatically extracting from the ultrasound volume an ultrasound image substantially in a plane extending through the first point and the second point. The method includes causing a display system to present the ultrasound image.

The invention discloses a plugging device, and relates to the technical field of medical instruments. The plugging device comprises a plugging body, an elastic connecting piece and a hanging part, the plugging body is suitable for being matched with the shape of a target plugging area; one end of the elastic connecting piece is arranged on the plugging body; one end of the hanging part is connected with the other end of the elastic connecting piece, and the hanging part is suitable for being hung on the tissue of the target plugging area. The plugging device which is made of degradable materials and is made for the cauliflower-shaped left auricle can be implanted into the left auricle of a patient through minimally invasive catheter interventional operation to plug the left auricle, climbing and covering of endothelial tissue of a left atrium are guided, then complete degradation of an instrument in a human body after endothelialization is achieved, and the left auricle plugging effect is achieved. And finally, the plugging effect is completely realized by the autologous tissue of the patient, the formation and falling of thrombus emboli in the left atrial appendage are effectively prevented, and the occurrence risk of cerebral apoplexy diseases is greatly reduced.

The invention provides an atrium pressure measuring device, and relates to the field of atrium medical equipment. The atrium pressure measuring device comprises a pressure monitoring device, a pressure measuring unit is arranged on the outer side of the pressure monitoring device, a stabilizing unit is arranged on the front side of the pressure monitoring device, a mounting unit is arranged on the rear side of the pressure monitoring device, the pressure measuring unit comprises a connector, the connector is arranged on the front side of the pressure monitoring device, and the stabilizing unit is arranged on the rear side of the pressure monitoring device. The outer side of the connector is fixedly connected with a connecting line, the outer end of the connecting line is fixedly connected with a pushing pipe, the outer side of the pushing pipe is fixedly connected with a conveying sheath, and the outer side of the conveying sheath is fixedly connected with two plugs. Through arrangement of a stable cover, a rotating plate, a spring, a control plate, stable plates, a moving plate, an electromagnetic block I and an electromagnetic block II, the stable plates on the left side and the right side can be in tight contact with the outer side of a connecting wire conveniently, the connecting wire is limited, the stability of a connector during atrial pressure monitoring is improved, and the situation that the detection precision is affected due to the fact that the connector falls off is avoided.

The invention provides a guide system for a guide wire of a patent foramen ovale interventional occluder. The guide system comprises a sheath tube dilator assembly, a guide tube component, a first guide wire and a second guide wire, the sheath tube expander assembly comprises a sheath tube fixing component and an expander component, and a tube body structure of the expander component is used for being arranged in a tube body structure of the sheath tube fixing component in a penetrating mode. The sheathing canal dilator assembly is provided with an operation part which is used for controlling the far end of the sheathing canal dilator assembly to move to the atrial septum fossa ovalis; the pipe body structure of the guide pipe component is used for being rotatably and slidably arranged in the pipe body structure of the expander component in a penetrating mode, and the far end of the guide pipe component is used for entering the PFO tunnel from the atrial septum fossa ovalis, so that a left atrial channel is established. According to the method, the operation success rate and efficiency can be remarkably improved, and the problem that a guide wire is difficult to pass through due to the fact that the PFO tunnel is small, adhesion or anatomical variation is effectively solved by means of the step-by-step strategy that the PFO tunnel is mechanically opened through the guide pipe component firstly and then the second guide wire explores a path.

The invention relates to an atrial arrhythmia recognition method and system based on a space-time diagram neural network and atrial signal source reconstruction and a storage medium. According to the method, source decoupling of ventricular and atrial activities is achieved through a signal processing architecture combining independent component analysis and variational mode decomposition; the atrial signal extraction distortion under wide QRS wave group and noise interference is fundamentally avoided; meanwhile, a multi-modal feature system fusing time domain dynamics, frequency domain morphology and spatial synchronism is constructed, and a space-time diagram convolutional network constructed based on lead physical and physiological topology is matched, so that the space-time dependency relationship of the multi-lead electrocardiosignals is effectively captured. In addition, the introduced attention mechanism provides a visual decision basis, and the accuracy and interpretability of atrial fibrillation and atrial flutter identification in complex pathological scenes with conduction block and the like are remarkably improved.

A method for left atrial appendage (LAA) invagination, including:convexing a portion of the LAA wall into the LAA, wherein the convexing includes convexing the LAA wall portion by applying suction from a collapsible suction cup contacting the LAA wall on the LAA wall portion;grasping the convexed LAA wall portion within the LAA, following the convexing; invaginating the LAA at least partly into the left atria (LA) using the convexed LAA portion;wherein the grasping includes controllably collapsing the collapsible suction cup on the convexed LAA portion with a force sufficient to hold the convexed LAA portion during the invaginating.

A method is provided. The method is implemented by a mapping engine. The mapping engine includes processor executable code that is stored on the memory and executed by the processor. The method includes acquiring a catheter trajectory in real time during an ablation procedure, and training a pre-trained neural network based on a data set and the catheter trajectory to provide a trained neural network. The method includes approximating an atrial shape with a trained neural network and a portion of a catheter traversal path, and generating a three-dimensional model output from the trained neural network and the atrial shape. The method further includes displaying the three-dimensional model output as an early visualization in the ablation procedure.

Systems and methods for automatically acquiring an ultrasound volume to extract a two-dimensional short axis view of a left atrial appendage are provided. The method includes acquiring, by an ultrasound probe, a two-dimensional long axis ultrasound image view of a left atrial appendage. The method includes automatically detecting a first point on a circumflex artery side of the left atrial appendage and a second point on a left atrial ridge side of the left atrial appendage in the two-dimensional long axis ultrasound image view. The method includes acquiring, by the ultrasound probe, an ultrasound volume comprising the left atrial appendage. The method includes automatically extracting from the ultrasound volume an ultrasound image substantially in a plane extending through the first point and the second point. The method includes causing a display system to present the ultrasound image.

A system, method, and device for occluding an anatomical cavity, such as an atrial appendage are provided. The system includes a biocompatible plug assembly comprising a patch and strip made of, for example, bovine pericardium, where the strip is flexible and foldable on itself to reduce its vertical profile, as well as a surgical occlusion device configured to deliver the strip into an anatomical cavity to pack the anatomical cavity. The patch may be secured to an opening of the anatomical cavity, to create a secure plug preventing fluid or material passage. Applied to a left atrial appendage, the system and method reduce the risk of cardioembolic strokes from atrial fibrillation.

The application provides an ablation catheter, which comprises a tube body, a handle, a bending adjustment section, a tube head, an energy transmission channel and an ultrasonic detection device. The ultrasonic detection device is arranged at the intersection of the end surface of the tube head and the side surface of the tube head. The ablation catheter has the advantages of large detection range, convenient operation and compact structure, and can detect the atrial wall thickness and ablation depth of the area in front of the catheter end surface and above the catheter side surface.

A method for left atrial appendage (LAA) invagination, including:convexing a portion of the LAA wall into the LAA;grasping the convexed LAA wall portion within the LAA;invaginating the LAA at least partly into the left atria (LA) using the convexed LAA portion.

An implant (1) for occluding a left atrial appendage comprises a radially expansible element (2) configured to shift between a collapsed configuration and an expanded configuration. The radially expansible element (2) comprises a pair of core elements (3) which extends in direction of a longitudinal axis (4). The pair of core elements (3) comprises a first core element (5) and a second core element (6). The first and second core elements (5, 6) are stacked in direction of said longitudinal axis (4). The pair of core elements (3) has an outer circumference (7) and the first core element (5) and the second core element (6) each enclose a cavity (8). The first core element (5) and the second core element (6) are rotatable relative to one another. The radially expansible element (2) further comprises a driving and locking element arranged in the respective cavities (8) of the pair of core elements (3) for rotating the first core element (5) and the second core element (6) relative to one another so as to move the radially expansible element (2) from the collapsed configuration into the expanded configuration and for locking the first core element (5) and the second core element (6) relative to one another, wherein the driving and locking element is adapted for being engaged with a rotatable pin mounted at the tip of an elongated catheter member. The radially expansible element (2) further comprises a plurality of pairs of bendable spokes (9) extending from the pair of core elements (3) in an outward direction, each of the pairs of bendable spokes (9) having a first spoke member (10) and a second spoke member (11), the first and second spoke members (10, 11) being stacked in direction of said longitudinal axis (4), and each of said first and second spoke members (10, 11) having an inner end (12) and an outer end (13). The radially expansible element (2) further comprises a plurality of shell elements (14) attached to the outer end (13) of the spoke members (9), and extending transversely from the outer end (13) of the spoke members (9) in a curved manner, the shell elements (14) having a proximal end (15) and a distal end (16). The inner end (12) of the first spoke member (9) is connected to the outer circumference (7) of the first core element (5), and the inner end (12) of the second spoke member (6) is connected to the outer circumference (7) of the second core element (6). The outer ends (13) of the first and second spoke members (10, 11) are both connected to the proximal end (15) of the shell elements (14). The distal end (16) of the shell elements (14) is configured to overlap with a proximal end (15) of the shell elements (14) in the expanded configuration of the radially expansible element (2) so as to form a substantially circular outer circumference (17) of the radially expansible element (2).

The present invention relates to a plugging device and a plugging system. The plugging device includes a plugging part, a fixing part and a first clamping part. The plugging part includes a self-expanding body. The fixing part is located at one end of the plugging part, and the first clamping part is fixed to the plugging part through the fixing part. For the plugging device provided by the present invention, on the one hand, the plugging effect is not affected by the shape of the left and right atrial walls, so the plugging effect is better and there will be no residual shunt. On the other hand, the plugging device has no double-disk structure, and the instrument can be made smaller, reducing the metal content of the implanted instrument, reducing the risk of human nickel ion allergy, and not affecting the possibility of re-puncturing the atrial septum. On the third hand, due to the cancellation of the double-plugging disk structure, for a longer patent foramen ovale channel, it can avoid the extrusion of the atrial septum tissue caused by the pulling of the plugging disks into the patent foramen ovale channel due to the longer patent foramen ovale channel in the two-disk plugging device, thereby reducing the damage to the myocardial membrane.

Methods, systems, and devices for atrial fibrillation (AFib) detection are described. A method may include acquiring physiological data collected from a user via a wearable ring device, the physiological data including temperature data and motion data, and identifying that a measurement trigger condition for AFib has been satisfied based on the temperature data satisfying a temperature threshold and the motion data satisfying a motion threshold. The method may include sampling photoplethysmogram (PPG) data for the user via the wearable ring device based on identifying satisfaction of the measurement trigger condition, and classifying one or more AFib states based on the sampled PPG data. The method may further include causing a GUI of a user device to display an indication of the one or more AFib states.

1. Name of the design product: Tissue closure clip. 2. Use of the design product: This design product is mainly used in medicine to clamp or block tissues, such as using clips to close vascular tissues, valve tissues, atria, left atrial appendages, etc. 3. Design key points of the design product: Lies in the shape. 4. Picture or photo that best shows the design key points: Perspective view of Design 1. 5. The bottom view of Design 1 is the same as the top view of Design 1, so the bottom view of Design 1 is omitted; the bottom view of Design 2 is the same as the top view of Design 2, so the bottom view of Design 2 is omitted. 6. Design 1 is designated as the basic design.

Methods, systems, and devices for atrial fibrillation (AFib) detection are described. A method may include acquiring physiological data collected from a user via a wearable ring device, the physiological data including temperature data and motion data, and identifying that a measurement trigger condition for AFib has been satisfied based on the temperature data satisfying a temperature threshold and the motion data satisfying a motion threshold. The method may include sampling photoplethysmogram (PPG) data for the user via the wearable ring device based on identifying satisfaction of the measurement trigger condition, and classifying one or more AFib states based on the sampled PPG data. The method may further include causing a GUI of a user device to display an indication of the one or more AFib states.