213 results about "Left auricle" patented technology

The invention discloses a left auricle plugging device and a transport system. The left auricle plugging device comprises a stent and a plugging device body. Firstly, the stent is implanted and fixed on the left auricle inlet position, the double-tray-shaped plugging device body is released on the stent for plugging a left auricle, and therefore the problem of cerebral apoplexy caused by left auricle thrombus because of atrial fibrillation can be solved. The left auricle plugging device is provided with the self-expandable nitinol stent, the stent is firmly fixed on the left auricle inlet position by depending on anchoring thorns, and then the appropriate plugging device body is released on the stent. The transport system transports the left auricle plugging device to the left auricle position. Compared with the prior art, the stent is firstly fixed on the left auricle inlet position, then the double-tray-shaped plugging device body is released on the stent, and therefore release accuracy and implanting stability of the plugging device body are improved, and the plugging device body has selectivity. After release, the stent and the the plugging device body can be recovered to a catheter for relocation or replacement.

A medical device implant for the left atrial appendage of a patient's heart, to prevent strokes. The device includes a cap that overlies the opening of the LAA connected to a bulb in the LAA. Dis-continuous segmented sails attached to the cap promote tissue growth over the device.

The invention discloses a left auricle plugging device locating position automatically in left auricle, solving problems of irrational combination, damaging the left auricle when fixing and residual cavity in left auricle opening place existing in current left auricle plugging device, comprising cradle (1) woven with nickel-tantalum alloy and with net structure in the surface, and insulating membrane (3) installed in cradle (1), the said cradle (1) is formed by connection of hollow plate-like plugging head (6) and hollow cylindrical locating column (5), the outer diameter of the plate-like plugging head (6) is larger than that of cylindrical locating column (5); the center of (5) and (6) are equipped with insulating membrane (3); on the surface which (5)and (6) are not connected is equipped with delivery connector (2). The device is characterized by the rational structure, automatic locating in the left auricle, no occur of applications, and suitable for left auricle of different size.

The invention discloses a left auricle occluding device. The left auricle occluding device comprises a sealing disc and an anchoring device, both of which are connected. The position where the anchoring device is matched with a left auricle is an anchoring net of a boneless structure. The overall anchoring device is of a boneless structure and formed by weaving of hyper-elastic metal wires or memory alloy metal wires. The far end of the anchoring device is in the shape of an opening. The near end of the anchoring device is collected and connected with the sealing disc to form a conical net. The far end of the anchoring device is opened and turned up towards the near end to form the anchoring net surrounding the conical net. The anchoring net is joined with the conical net by means of a circular transition area. The left auricle occluding device has following beneficial effects: force can be uniformly distributed to be anchored in the interior of the left auricle in order to eliminate concentration of local stress and can also be repeatedly released; and an opening part of the left auricle is effectively and reliably blocked.

The invention discloses a plugging system for a left auricle. The plugging system comprises a plugging disc and an anchoring disc; the plugging disc is formed by weaving nickel-titanium alloy wires and conducting heat treatment on the nickel-titanium alloy wires to form the disc-shaped structure; the anchoring disc is also formed by weaving nickel-titanium alloy wires and conducting heat treatment on the nickel-titanium alloy wires to form a column-shaped structure; the anchoring disc at least comprises a thick filament, the thick filament is formed by closely winding the nickel-titanium alloy wires; when the anchoring disc is located in a proper position, at least one nickel-titanium alloy wire stretches outwards towards an inclined direction from the anchoring disc, and faces the plugging disc as an anchoring thorn. The plugging system for the left auricle disclosed by the invention is used for blocking the left auricle, is high in effect of blocking blood clots inside the left auricle from flowing out, can be repeatedly positioned, is fixedly stable, and is resistant to fatigue.

The invention discloses a plugging device for a left auricle. The plugging device comprises a plugging disc, a connecting disc and an anchoring disc, wherein the plugging disc and the connecting disc are respectively formed by weaving nickel-titanium alloy wires and conducting heat treatment on the nickel-titanium alloy wires to form a disc-shaped structure; the diameter of the connecting disc is approximate to that of the anchoring disc; when the connecting disc is unfolded, the connecting disc provides supporting for the anchoring disc to stabilize the fixation of the anchoring disc inside the left auricle; the anchoring disc comprises a central end part connected with the connecting disc and a plurality of support rods connected with the central end part. The plugging device for the left auricle disclosed by the invention is used for blocking the left auricle, is high in effect of blocking blood clots inside the left auricle from flowing out, can be repeatedly positioned, is fixedly stable, and is resistant to fatigue.

Devices, systems, and methods for inverting and closing the left atrial appendage. In at least one embodiment of a method for closing a left atrial appendage of the present disclosure, the method comprises the steps of inverting a distal portion of a left atrial appendage, and constraining the inverted distal portion of the left atrial appendage using a device configured to fit within an interior of the left atrial appendage.

Devices, systems, and methods for closing the base of a left atrial appendage or other tissue structure comprise a device applicator having jaws, a shaft, and a handle. First and second triggers on a handle are configured to close the jaws and a closure device in a step-wise manner where tissue penetrating fasteners within the closure device are engaged by studs on the jaws, where the studs must be released prior to the opening of the jaws.

The invention relates to a headset assembly with a recording function for communication, which comprises a left earphone, a right earphone, a conversation module and a recording module, wherein the left earphone and the right earphone are respectively provided with a loudspeaker and a microphone; the conversation module is electrically connected with one of the left earphone and the right earphone; the recording module is electrically connected to the left earphone and the right earphone; under a first operating mode, the conversation module is communicated with an external communication device through the microphone and the loudspeaker of the left earphone or the right earphone; and under a second operating mode, the recording module is used for receiving an environment sound signal simultaneously through the left microphone and the right microphone, and recording and storing the environment sound signal. The microphones can be respectively put in a left auricle and a right auricle, and the recorded sound can contain the effect of an HRTF (Head Related Transfer Function), so that the effect of stereo widening is realized when the recorded sound is replayed.

The invention discloses a split left auricle closure device. The split left auricle closure device comprises an anchor device and a seal disc which are arranged in a split mode, one of the anchor device and the seal disc is provided with a cylindrical first connector, and the other one of the anchor device and the seal disc is provided with a second connector matched with the cylindrical wall of the first connector to achieve connection. A limiting hole and hook matching mode can be adopted for the first connector and the second connector, and an interference fit mode can also be adopted at the same time or independently. According to the separable left auricle closure device, the distance between the anchor device and the seal disc can be adjusted according to the form of the left auricle, and thus the seal disc can completely isolate the left atrium from the left auricle.

The invention discloses a device for ligaturing left auricle and the utilization method. the device comprises ligaturing line and conveying system: conveying system comprises internal and external sheath tube, the internal part is hollow; the length of internal sheath tube is little longer than that of external sheath tube, the internal sheath tube can be rested in long sheath tube; godet is set on internal sheath tube, and the front part is equipped with circular ring; hat is connected with front part of internal sheath tube. The utilization method comprises following steps: putting internal sheath tube into external sheath tube, keeping one piercing slot on hat is align to ligaturing line; threading the other end of ligaturing line by using godet through internal sheath tube to form loop; looping left auricle with formed loop, tightening ligaturing line to ligature left auricle. The invention is characterized by small injury area, low risk and prevention of stroke.

The invention provides a left auricle ligation device which comprises an outer sheath tube, an inner sheath tube, a push rod, a lock sleeve and a ligature. The ligature is in the shape of a 'jade pendant', a line knot is tied every section, the ligature penetrates the lock sleeve, and a circular ring is formed at one end of the lock sleeve. The left auricle ligation device is used for firmly and reliably ligating a left auricle without opening a chest, and blood flow is completely blocked.

An apparatus for performing myocardial revascularization in a beating heart and left ventricular assistance condition comprises an arterial cannula, of a per se known type, arranged in the descending aorta, a novel arterial draining cannula, of a two cannula stage type, so arranged that the draining occurs from the left auricle and left ventricle, and a centrifugal pump allowing blood flow from the left ventricle to the aorta. The apparatus allow the patients to be operated on with the safety of a conventional extra-corporeal circulation and with a risk and cost reduction due to the off-pump technique.

The invention discloses a computer-assisted ultrasonic diagnosis method for a left atrium/left auricle thrombus. The technical scheme includes that data mining technology, a pattern recognition theory and medical clinical information are combined, a gray-scale video and a real-time three-dimensional dynamic video serve as research objects, all-dimensional information in an image is accurately acquired, potential disease association rules in the image information are mined, and multiclass characteristics are comprehensively analyzed to obtain a detection method for automatically detecting and classifying the left atrium/left auricle thrombus. A thrombus recognition method can avoid missed diagnosis and misdiagnosis caused by subjective reasons such as inadequate experience or visual fatigue of doctors, and patients with suspected left atrium/left auricle thrombi clinically detected by transesophageal echocardiography can be confirmed as early as possible, so that the patients without thrombosis can receive cardioversion treatment of atrial fibrillation as early as possible. The method is simple and convenient to operate and high in practicability, and has important guiding significance for diagnosis and treatment of the left atrium/left auricle thrombus and ventricular fibrillation.

The invention provides a system and method for medical image based cardio-embolic stroke risk prediction. A system and method for medical image based patient-specific ischemic stroke risk prediction is disclosed. Left atrium (LA) and left atrium appendage (LAA) measurements are extracted from medical image data of a patient. Derived metrics for the LA and LAA of the patient are computed using a patient-specific computational model of cardiac function based on the LA and LAA measurements extracted from the medical image data of the patient. A stroke risk score for the patient is calculated based on the extracted LA and LAA measurements and the computed derived metrics for the LA and LAA of the patient using a trained machine learning based classifier, which inputs the extracted LA and LAA measurements and the computed derived metrics for the LA and LAA as features.

The invention discloses an improved left auricle occluder. The improved left auricle occluder comprises a sealing disc and an anchoring device, wherein the sealing disc is connected with the anchoring device; at least two flow stopping membranes are arranged in the sealing disc; a portion, which is matched with a left auricle, of the anchoring device is an anchoring net; and the anchoring net is a boneless structure. The whole anchoring device is a boneless structure. The anchoring device is knitted by metal wires, a far end of the anchoring device is in the shape of an opening, and a near end of the anchoring device is tucked, is connected with the sealing disc and is in the shape of a conical net; the far end of the anchoring device is opened and turned up towards the near end to form the anchoring net; and the anchoring net surrounds the conical net. By the improved left auricle occluder, a left auricle opening can be occluded in a multi-layered manner, force is uniformly distributed in the left auricle during anchoring, local stress concentration is eliminated, repeated release can be implemented, and the left auricle opening can be occluded effectively and reliably.

The invention discloses a conveyor device. The conveyor device comprises an introducer, and a conveyor and an expanding tube which are in fit with the introducer, wherein the introducer comprises an introduction sheath tube, an introduction sheath tube connecting piece arranged at one end of the introduction sheath tube and a screwing nut arranged at one end of the introduction sheath tube connecting piece; one end of the expanding tube can run through the introduction sheath tube, the introduction sheath tube connecting piece and the screwing nut to be in fit with the introduction sheath tube; the conveyor comprises a conveying sheath tube, a conveying sheath tube connecting piece arranged at one end of the conveying sheath tube, a Y-shaped valve arranged at one end of the conveying sheath tube connecting piece and a push rod of which one end runs through the conveying sheath tube, the conveying sheath tube connecting piece and the Y-shaped valve; one end of the push rod is not protruded out of the conveying sheath tube; and the conveying sheath tube can run through the introduction sheath tube, the introduction sheath tube connecting piece and the screwing nut to be in fit with the introduction sheath tube. The device provided by the invention can rapidly arrange a left auricle sealing device into a left auricle, has a stable structure and high operability, shortens operation time and increases the success rate of operations.

The invention provides a left auricle plugging device. A plugging structure comprises a first connecting piece and a plugging piece fixed on the first connecting piece, a fixing structure comprises a second connecting piece and a fixing piece which is fixed on the second connecting piece, the first connecting piece and the second connecting piece are separated or fixed, so that when the left auricle plugging device is applied to the left auricles different in shape and different in depth, the first connecting piece is separated from the second connecting piece, after the suitable fixing structure is selected, the first connecting piece and the second connecting pieces are adopted for fixing correspondingly, so that the left auricle is plugged, namely, adaptive selection can be carried out according to the different left auricles, and thus the left auricle plugging device can well adapt to the left auricles different in shape and different in depth.

The invention provides an ultrasonic imaging method. The method comprises the steps that three-dimensional ultrasound image data of the face of a fetus are obtained; three-dimensional images, displayed on the same picture, of the left eye and ear and right ear and eye of the left side and the right side of the face are obtained respectively; the position information of the left and right eyes and the position information of the upper edges of the left and right auricles are obtained respectively; the angle between the connecting line of the left eye and the upper edge of the left auricle and the reference face and the angle between the connecting line of the right eye and the upper edge of the right auricle and the reference face are calculated respectively. The invention further provides an ultrasonic imaging device and ultrasonic equipment comprising the same. The low-set ear condition of the fetus can be rapidly diagnosed, and missed diagnosis is avoided.

A computer that determines at least an anatomic feature of a left atrial appendage (LAA) is described. During operation, the computer generates a 3D image associated with an individual's heart. This 3D image may present a view along a perpendicular direction to an opening of the LAA. Then, the computer may receive information specifying a set of reference locations. For example, the set of reference locations may include: a location on a circumflex artery, a location between a superior portion of the LAA and a left pulmonary vein, and/or a location on a superior wall of the LAA and distal to trabeculae carneae. Next, the computer automatically determines, based, at least in part, on the set of reference locations, at least the anatomical feature of the LAA, which is associated with the opening of the LAA and a size of a device used in an LAA closure (LAAC) procedure.