40 results about "Left atrial appendage occlusion" 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.

The utility model provides a left auricle plugging device and a left auricle plugging system. The left atrial appendage occluder comprises a fixed disc; a plugging disc; the universal joint assembly is connected with the fixing disc and the plugging disc so that the plugging disc can rotate in a universal mode relative to the fixing disc. The universal joint assembly comprises a limiting piece and a universal joint component, the limiting piece is provided with a containing cavity, a universal structure is arranged at the first end of the universal joint component, the universal structure is movably arranged in the containing cavity, and the universal structure and the limiting piece form a limiting stop. Wherein the limiting piece comprises a plurality of connecting sections, the connecting sections are sequentially welded end to end to define a containing cavity, and clamping structures matched with each other are arranged on the connecting end faces of every two adjacent connecting sections. The left atrial appendage plugging device solves the problem that in the prior art, a left atrial appendage plugging device is poor in applicability.

The present application relates to an occlusion device comprising a fixing portion and a sealing portion. The fixing portion comprises at least one support member. The occlusion device has an initial state and an assembled state. In the initial state, a first connection portion and a second connection portion are separated from each other. In the assembled state, the first connection portion is connected to the second connection portion to connect the fixing portion and the sealing portion. Therefore, the sealing portion and the fixing portion can be relatively independently packaged and produced, and assembled according to required dimensions when implantation is needed. Thus, the assembled left atrial appendage occlusion device exhibits relatively good adaptability and can also adapt to left atrial appendages with special shapes.

The present invention provides a left atrial appendage occlusion device, which includes an occlusion member, an ablation member connected to the occlusion member, and a mapping member. The occlusion member is used to be fixed at the opening of the left atrial appendage, the ablation member is used to transmit ablation energy to ablate the target tissue area in the left atrial appendage, and the mapping member is used to receive electrophysiological signals to map the target tissue area. The left atrial appendage occlusion device can not only occlude the opening of the left atrial appendage, but also control the ablation member to ablate the target tissue area in the left atrial appendage, and the mapping member can map the electrical signals in the left atrial appendage to ensure that a complete ablation area of ​​at least one circle is formed near the opening of the left atrial appendage to achieve a complete electrical isolation treatment effect.

The present disclosure relates to a computer implemented method, system, and computer program for in silico surgical planification of a left atrial appendage occlusion (LAAO), wherein the risk of developing a device-associated thrombosis prior to a LAAO surgical intervention is evaluated. The positioning of the 3D model of the left atrial appendage occluder is determined according to anatomical characteristics of the left atrium of the patient, a first compression value and a structural simulation that provides a second compression value. The method further computes a risk score for device-induced thrombosis by analysing computational fluid dynamics calculations in conjunction with patient's medical parameters. This risk assessment aids in optimizing the positioning of the LAAO device, potentially reducing the incidence of post-operation thrombosis.

An occlusive device for the left atrial appendage is plastically deformable and biodegradable.

Medical devices, systems and methods for occluding a left atrial appendage of a heart with an implantable medical device and three-dimensional imaging. In one embodiment, the imaging is facilitated with a controller coupled to one or more magnetic field generators and a display, the one or more magnetic field generators configured to generate a magnetic field within the anatomy of a patient and the display provides the imaging and display information thereon. The medical system also includes a medical device delivery system for delivering the implantable medical device. The medical device includes one or more magnetic field location sensors therewith that are operatively coupled to the controller. With this arrangement, the sensors are sized and configured to facilitate providing the three-dimensional imaging within the heart that is viewable on the display to assist a physician to safely and effectively implant the medical device.

This invention relates to a left atrial appendage occlusion device, comprising an occlusion disc, a connecting mechanism, and a filling module. The occlusion disc is connected to the filling module via the connecting mechanism. The filling module includes at least one filling unit, and all the filling units are connected in series. The filling module is used to fill the entire interior of the left atrial appendage. By setting the occlusion disc and the filling module, the number and size of the filling units in the filling module can be customized according to the shape of the lesion in the left atrial appendage, so as to better fill the lesion space and achieve the effect of occlusion of the left atrial appendage in conjunction with the occlusion disc. By setting polyurethane foam in the occlusion disc, thrombus formation and occlusion can be quickly achieved and the endothelialization process can be accelerated. At the same time, the filling unit made of polyurethane foam can also accelerate the closure of the entire chamber.

The invention belongs to the technical field of medical instruments, and discloses an atrial fibrillation left ear plugging auxiliary device which comprises a vertical rod, the bottom end of the vertical rod is movably sleeved with a ball, a mounting rod is fixedly mounted at the bottom end of the ball, a fixing frame is fixedly mounted at the front end of the mounting rod, and a display is fixedly sleeved with the fixing frame. By arranging the ball, the vertical rod, the inclined rod, the rectangular block and the threaded rod, the ball is movably connected to the bottom end of the vertical rod in a sleeving mode, so that when the fixing frame is shifted, the fixing frame can drive the displayer and the mounting rod to rotate with the ball as the axis point, and when the handle is rotated, the threaded rod rotates; according to the angle adjusting device, the rectangular block drives the inclined rod to move under the action of the threaded rod, then the inclined rod generates thrust on the vertical rod, the vertical rod is pushed to drive the rubber pad to move so as to press the ball, and therefore the angle adjusting range of the fixing frame and the displayer can be enlarged.

Left atrial appendage occlusion device specifications from 2D ICE for use in the treatment of atrial fibrillation patients. Systems and methods for left atrial appendage occlusion device specification from two-dimensional (2D) intracardiac echo imaging (ICE). In the imaging procedure, the 2D ICE is used to acquire an image of the patient's left atrium. A model of the left atrium is generated from the image of the left atrium. The model of the left atrium is used to validate subsequent imaging of the left atrial appendage of the patient. Anatomical measurements from validated subsequent imaging may be used to select or specify a left atrial appendage occlusion device in order, for example, to treat atrial fibrillation patients.

The invention relates to the technical field of left auricle plugging, and discloses a left auricle plugging device which comprises a delivery sheath and a composite sheath, and one end of the composite sheath penetrates through the delivery sheath and extends to the outside of the delivery sheath; an inflation pipeline, a gel injection pipeline and a blood pump-back pipeline are respectively arranged in the composite sheath. According to the left auricle plugging device, the delivery sheath, the composite sheath, the inflation pipeline, the gel injection pipeline, the blood pumpback pipeline and the plugging air bag are arranged, the plugging air bag temporarily seals a left auricle opening, the blood pumpback pipeline pumps out blood in a left auricle, plugging gel is circularly injected into a left auricle cavity through the gel injection pipeline, and the left auricle cavity is sealed. According to the left auricle plugging device, blood in a left auricle is replaced with plugging gel, then the plugging gel is jellied to completely and stably plug the left auricle, left auricle plugging is achieved, the left auricle plugging device can be suitable for left auricles of different forms, sizes and angles, and the risks of left auricle damage and pericardium filling caused by possible repeated recovery and release in the surgical operation process of a traditional plugging device are avoided.

This invention relates to an occlusion device and corresponding tooling, comprising a relatively independent fixing part and a sealing part, which are assembled to form the occlusion device. Thus, the fixing part and the sealing part can be manufactured, fabricated, and transported independently, and then assembled according to the required dimensions when implantation is needed. Therefore, the assembled left atrial appendage occlusion device has a wider range of size combinations, thus possessing good adaptability and fully adaptable to some special-sized left atrial appendage shapes. Simultaneously, the tooling facilitates the assembly of the occlusion device, enabling efficient and precise assembly with minimal impact on the device's physical properties and lifespan.

The present application relates to the technical field of left atrial appendage occlusion by intervention, and discloses a left atrial appendage occlusion device, which comprises an occlusion component and a fixing component, the occlusion component comprises an elastic net-like braided body structure which has a proximal end face and a distal end face, the occlusion component is connected with the fixing component on the side of the distal end face, the occlusion component further comprises a flow blocking film arranged in the elastic net-like braided body structure, the flow blocking film is configured to cover the distal end face or the proximal end face in the radial direction and is fixed along the circumferential direction of the elastic net-like braided body structure, and the flow blocking film is further pulled and limited by a pulling piece leading to the fixing component, so that the occlusion efficiency of the left atrial appendage occlusion device is enhanced.

1. The name of the design product: left atrial appendage occluder. 2. The use of the design product: for left atrial appendage occlusion. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: design 1 perspective view 1. 5. Other circumstances that need to be explained: specify design 1 as the basic design.

The invention relates to the technical field of medical data processing and computer-aided surgical planning, in particular to a medical data mining and analyzing system based on cardiac ultrasound image streams. The system comprises a data fusion module, a map construction module, a risk prediction module and a decision module. The system obtains a left auricle ultrasonic sequence and mechanical parameters, and constructs a space-time aligned dynamic biomechanical characteristic spectrum; the core of the method is to simulate the dynamic adherence performance of an occluder based on a map, calculate stability, deformation and residual shunt risk indexes, and output risk grades through a model; according to the method, the problem of spatio-temporal dislocation of morphological and mechanical data is effectively solved, digital twinning with authenticity and mechanical accuracy is realized, and accurate decision support is provided for left atrial appendage occlusion.

1. The name of the design product: left atrial appendage occluder (two). 2. The use of the design product: for left atrial appendage occlusion. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: design 1 perspective view. 5. The right view is symmetrical with the left view, and the right view is omitted; the rear view is symmetrical with the front view, and the rear view is omitted. 6. Design 1 is designated as the basic design.

An aspiration catheter and method of use for inverting the left atrial appendage (LAA) of a patient's heart. The aspiration catheter can include a proximal portion for attachment to a negative pressure source, and a distal portion for making suction contact with the interior wall of the LAA. The distal portion is preferably in the form of a self-expanding suction cup adapted to transition between a collapsed state and an expanded state. The proximal and distal portions share a common internal lumen for transmitting externally applied negative pressure therethrough, and the suction contact created by the negative pressure can adhere the suction cup portion of the catheter to the interior LAA wall for pulling or inverting the LAA into the left atrium.

The invention relates to a left auricle closing device, and belongs to the technical field of medical instruments. The first pushing assembly and the knob assembly are matched to drive the first conveying pipe to move and rotate in the axial direction, the second pushing assembly drives the second conveying pipe to move in the axial direction, the third pushing assembly drives the controllable catheter to move in the axial direction, and the implanter and the locking device can be exposed out of the controllable catheter and retract into the controllable catheter; through cooperation of the rotary knob assembly, the first pushing assembly, the second pushing assembly and the third pushing assembly, the implanting device and the locking device can be accurately conveyed and released in the left auricle closing operation process, and left auricle tissue is pulled and wound on the implanting device and clamped between the implanting device and the locking device; and the implanter and the locking device of the implant are not easy to fall off. The left atrial appendage closing device is simple in operation steps and convenient for doctors to operate.

The embodiment of the utility model provides a sheath tube fixing mechanism and a sheath tube clamping mechanism of a bending-adjustable guide sheath, which are mainly applied to bending-adjustable guide sheaths in the field of atrial fibrillation ablation treatment or bending-adjustable guide sheaths in the field of atrial fibrillation left auricle plugging. In the embodiment of the invention, the structures of the sheath base fixing mechanism and the sheath tube clamping mechanism are systematically designed, and the sheath base fixing mechanism is exemplarily explained. By means of the improved structure, the problems that in the bonding process, the yield is low, and labor hours are consumed can be solved, and the yield and efficiency of bonding of the adjustable bending sheath tube and the sheath base are improved.

The present disclosure relates to a computer implemented method, system, and computer program for in silico surgical planification of a left atrial appendage occlusion (LAAO), wherein the risk of developing a device-associated thrombosis prior to a LAAO surgical intervention is evaluated. The positioning of the 3D model of the left atrial appendage occluder is determined according to anatomical characteristics of the left atrium of the patient, a first compression value and a structural simulation that provides a second compression value. The method further computes a risk score for device-induced thrombosis by analysing computational fluid dynamics calculations in conjunction with patient's medical parameters. This risk assessment aids in optimizing the positioning of the LAAO device, potentially reducing the incidence of post-operation thrombosis.

1. The name of the design product: left atrial appendage occluder (one). 2. The use of the design product: for left atrial appendage occlusion. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: design 1 perspective view. 5. Other circumstances that need to be explained: specify design 1 as the basic design.

The invention provides a left auricle plugging device and a left auricle plugging device. The left auricle plugging device comprises a fixing disc and a plugging disc, the fixing disc is connected with the plugging disc, the fixing disc comprises a first support, the plugging disc comprises a second support, the first support and the second support are both of a net-shaped structure, and the radial size of the second support is gradually increased in the direction close to the first support. The left auricle plugging device solves the problem that in the prior art, after a left auricle plugging device is implanted, adverse postoperative risks are likely to be generated.

The application provides a sheath tube of an adjustable bending guide sheath, a sheath seat and a bonding method, and is mainly applied to an adjustable bending guide sheath in the field of atrial fibrillation ablation treatment or the field of atrial fibrillation left atrial appendage occlusion. In the application, the structure of a sheath seat fixing mechanism and a sheath tube clamping mechanism is systematically designed, and the bonding method of the sheath seat fixing mechanism and the sheath tube clamping mechanism is exemplarily described. The problems of low qualified rate and time-consuming in the bonding process can be solved, and the qualified rate and efficiency of the bonding of the adjustable bending sheath tube and the sheath seat are improved.

This invention relates to an occlusion device and tooling, comprising a relatively independent fixing part and a sealing part. The fixing part and the sealing part are assembled to form the occlusion device, which is then loaded into a sheath. The assembly and loading processes are performed simultaneously. Thus, the fixing part and the sealing part can be manufactured, fabricated, and transported independently, and then assembled according to the required dimensions when implantation is needed. Therefore, the assembled left atrial appendage occlusion device has a wider range of size combinations, resulting in better adaptability and fully adaptability to some special-sized left atrial appendage shapes. Simultaneously, the tooling facilitates the assembly of the occlusion device, enabling efficient and precise assembly with minimal impact on the device's physical properties and lifespan.

An occlusion device (210) for occluding a left atrial appendage (LAA) includes a compliant balloon (230) defining a balloon chamber (232) that is fluid tight and an actuation shaft (234) disposed at least partially within the balloon chamber (232) for setting a distance between distal and proximal portions (236, 238) of the balloon (230). A proximal LAA-orifice cover (70) includes a frame (72) and a cover (74) secured to the frame (72). An orifice support stent (290) is secured to the proximal LAA-orifice cover (70) and extends distally therefrom, generally cylindrical when in a radially expanded state. Other embodiments are also described.

The embodiment of the application provides a left atrial appendage occlusion and ablation device and a system thereof, and relates to the technical field of interventional medical instruments.The left atrial appendage occlusion and ablation device comprises an anchoring disc, a sealing disc and an insulating connecting piece.A first conductive part is arranged on the anchoring disc, and a second conductive part is arranged on the sealing disc, and the first conductive part and the second conductive part are used for transmitting ablation energy to tissue.The left atrial appendage occlusion and ablation device combines ablation and occlusion, simplifies the procedure of a one-stop treatment operation of 'ablation+left atrial appendage occlusion', and helps to reduce the operation difficulty.The two ends of the insulating connecting piece are connected with the anchoring disc and the sealing disc respectively, so that the first conductive part and the second conductive part are electrically isolated through the insulating connecting piece, the insulating effect is good, and the ablation success rate is improved.

The application discloses a kind of for left auricle plugging operation navigation multi-modal image automatic registration method, comprising the following steps: collecting structural heart disease intervention surgery patient preoperative CTA image and intraoperative CBCT image;Using U-Net deep learning framework, the heart region in CTA image and CBCT image is segmented and extracted, and the extracted image region is carried out data enhancement and size normalization etc.Pretreatment operation;With the network of depth convolution and visual Transformer fusion, the heart region image of CTA and CBCT is calculated Affine transformation matrix, so that the CTA image and CBCT image realize 3D affine registration;The image after registration is filled to the cutting region of the CBCT image, and the intraoperative CBCT image containing heart anatomical structure information is generated.The method of the application can realize the automatic, fast and accurate spatial registration of preoperative CTA image and intraoperative CBCT image, and the fusion image view generated by registration provides comprehensive reference for the heart three-dimensional anatomical structure and real-time instrument position, effectively assists instrument positioning, path planning and size selection, and provides a new intelligent tool for left auricle plugging operation navigation.

Medical devices and methods of making and using medical devices are disclosed. An example medical device may include a left atrial appendage device. An occlusive medical device includes an expandable framework configured to transition between a first configuration and an expanded configuration; and a fabric disposed along at least a portion of the expandable frame. A drug eluting coating is disposed on the fabric, the drug eluting coating comprising a pharmaceutically active ingredient dispersed within a polymeric carrier.

The application discloses a left auricle occluder for direct vision surgery, which belongs to the technical field of medical devices, and comprises a closing disc and an occluder. The lower end of the occluder is fixedly provided with an upper connecting pipe. The upper middle of the closing disc is fixedly provided with a lower connecting pipe. The middle of the lower connecting pipe and the upper connecting pipe is provided with a fixing cavity. The fixing cavity in the lower connecting pipe is fixedly provided with an extension pipe. The extension pipe extends to the upper side of the lower connecting pipe. The extension pipe is screw-connected with the fixing cavity of the upper connecting pipe. The upper end of the extension pipe is fixedly provided with an upper tooth. The upper end of the driving rod extends to the occluder. The upper end of the driving rod is fixedly connected with an upper screw rod. The upper screw rod is screw-connected with a dilating disc. The closing disc and the occluder can be automatically adjusted when being introduced into the atrium of a patient, so that the occluder is introduced into the atrium of the patient.

An occlusion device is provided for occluding a left atrial appendage (LAA), including a compliant balloon defining a fluid-tight balloon chamber. An actuating shaft is disposed at least partially within the balloon chamber, and configured to set a distance between distal and proximal end portions of the balloon. A locking mechanism is configured to assume locked and unlocked states, and is configured, when in the locked state, to maintain, between the distal and the proximal end portions of the balloon, the distance set using the actuating shaft. The occlusion device is shaped so as to define a fluid flow path along a portion of the actuating shaft. A valve is configured to selectively allow or block fluid flow between the fluid flow path and the balloon chamber when the valve is in open and closed states, respectively. Other embodiments are also described.