18 results about "Cardiac auricle" patented technology

The present application relates to the technical field of medical devices, in particular to a foldable auricle clamp structure, which comprises first and second clamping components arranged side by side; a resilient connecting member is connected between one end of the first clamping component and one end of the second clamping component and between the other end of the first clamping component and the other end of the second clamping component, and the resilient connecting member provides clamping force for the first and second clamping components; the first and second clamping components are foldable and deformable. The present application has a novel structure, the first and second clamping components are foldable and deformable, which facilitates clamping of the auricle, facilitates operation of the surgeon, and reduces the operation time; under the elastic action of the resilient connecting member, the clamping force formed between the first and second clamping components is uniform and balanced, which effectively prevents the auricle clamp from falling off and ensures the safety and reliability of the operation.

The utility model discloses a left atrial appendage occluder conveying sheathing canal shaping device which comprises heating plates which are oppositely arranged, a bent section shaping block and a straight section shaping block which are sequentially arranged between the plate faces of the heating plates in the shaping direction of a conveying sheathing canal, and shaping grooves are correspondingly formed in the bent section shaping block and the straight section shaping block. A shaping area of the conveying sheath tube is positioned through the shaping groove, an angle shaping block for shaping and fixing the torsion angle of the end of the conveying sheath tube relative to the straight section is arranged on the straight section shaping block, and the angle shaping block and the straight section shaping block are connected in a rotating fit mode and are rotationally positioned through an arranged angle limiting mechanism. According to the utility model, through the modular design, the shaping part for conveying the sheathing canal is separately and independently designed, a user can flexibly adjust the angle according to the requirements of different patients, and the complex operation of needing various sheathing canals is avoided, so that the left auricle anatomical structure of different patients can be adapted, and the requirements on various sheathing canals are reduced.

The invention relates to the technical field of medical treatment, and discloses a construction method of a left auricle hemodynamics simulation system, which comprises the following core steps of: firstly, acquiring noninvasive transthoracic echocardiography and cardiac enhancement CT (Computed Tomography) image data of a patient; secondly, through an image fusion technology, an accurate left auricle three-dimensional geometric structure model is constructed; and finally, on the basis of the model, carrying out hemodynamic simulation on the left atrium and the left auricle by utilizing a CFD (Computational Fluid Dynamics) technology, and accurately calculating hemodynamic parameters such as the blood flow velocity at the opening of the left auricle. The method has the advantages that the blood flow state of the left atrial appendage is evaluated completely, noninvasively, accurately and quantitatively, and traditional invasive transesophageal ultrasonic examination can be effectively replaced. According to the method, the comfort level of the patient and the examination safety are remarkably improved, operation related risks are avoided, meanwhile, the screening feasibility and efficiency are improved, and the method has important value for clinical management of the stroke risk of the atrial fibrillation patient.

The invention discloses a left atrial appendage closer, and belongs to the field of medical instruments. The left auricle closer comprises a conveying catheter, a supporting pipe, a supporting disc, a telescopic supporting rod, a closing clamp assembly and a control pull wire, a closing clamp can be fed into an opening of a left auricle through the conveying catheter, and the opening of the left auricle is opened through cooperation of the telescopic supporting rod and the control pull wire; according to the left atrial appendage closure device, the puncture hook needle in the closure clamp is used for puncturing the tissue wall of the left atrial appendage opening to achieve combination, finally the left atrial appendage opening is closed through linear closing of the closure clamp, and compared with an existing left atrial appendage closure device, the puncture hook needle on the periphery of the closure clamp can puncture the tissue in the radial direction, the closure clamp is used for driving the left atrial appendage opening to be closed, and the left atrial appendage opening is closed. The left atrial appendage closing clamp has the advantages that the left atrial appendage closing clamp is more firmly connected with the left atrial appendage and is not easy to fall off, the problem that the sealing reliability of the left atrial appendage is reduced due to looseness or movement is solved, long-term effectiveness of left atrial appendage closing is guaranteed, and complications caused by falling off and unreliable sealing are reduced.

The invention relates to a left atrial appendage occluder which comprises an occluding disc, a connecting mechanism and a filling module, and the occluding disc is connected with the filling module through the connecting mechanism; the filling module comprises at least one filling unit, all the filling units are connected in series, and the filling module is used for filling the whole left auricle; by arranging the plugging disc and the filling module, the number and the size of the filling units in the filling module can be customized according to the lesion shape of the left auricle, so that the lesion space is better filled, and the plugging effect of the left auricle is achieved in cooperation with the plugging disc; the polyurethane foam is arranged in the plugging disc, so that plug-forming plugging can be quickly realized, the endothelialization process can be accelerated, and meanwhile, the filling unit made of the polyurethane foam can also accelerate closing of the whole cavity.

Aspects of the present disclosure relate to devices, methods, and systems related to occlusion. In particular examples, devices, methods, and systems can include devices for placement in vessels, auricles, and body openings. The devices can include a unitary frame having a face portion including a central frame portion and a plurality of elongate members.

The application discloses a left auricle plugging device distal end necking auxiliary device and a necking method, which comprises a base, a guide lining core, a guide sleeve, a first necking sleeve, a second necking sleeve and a mounting sleeve, an inner ring for supporting the inner periphery of a support rod of the left auricle plugging device is arranged on the first necking sleeve, a positioning ring for positioning the support rod is arranged on the second necking sleeve, and an outer ring for fixing the outer periphery of the support rod is arranged on the mounting sleeve; the inner ring, the positioning ring and the outer ring are in the same radial direction, and a positioning groove corresponding to the support rod is arranged on the positioning ring; the first necking sleeve, the second necking sleeve and the mounting sleeve are cooperated, the inner ring, the positioning ring and the outer ring are fixed, the necking device is not limited by the structure of the left auricle plugging device, has universality, and the assembly mode that pipelines are directly sleeved can simplify operation steps and improve necking efficiency.

The invention relates to the technical field of medical instruments, in particular to a left atrial appendage closing device and a using method thereof.The left atrial appendage closing device comprises a balloon guiding sheath, a puncture assembly and a lasso assembly, the balloon guiding sheath is used for reaching a left atrial appendage through a blood vessel and blocking an opening of the left atrial appendage, and the puncture assembly is used for penetrating into the balloon guiding sheath and used for guiding the left atrial appendage to close the opening of the left atrial appendage; and the lasso assembly is used for penetrating into the puncture assembly, extending out of the left auricle wall ferrule and locking the root of the left auricle. The lasso assembly extends out of the left auricle wall ferrule along the interior of the puncture assembly and locks the root of the left auricle, the left auricle is tightened from the root to the opening, the opening of the left auricle is completely closed, thrombus can be prevented from entering blood circulation, meanwhile, direct contact with blood can be avoided to the maximum extent, and the thrombus puncture effect is improved. Therefore, the left atrial appendage closing device solves the problem that the occurrence rate of the instrument-related thrombus in the existing left atrial appendage closing operation is high.

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.

The application provides a heart tissue closure device. The heart tissue closure device comprises a first clamping arm, a second clamping arm and an elastic part. The first clamping arm comprises a first inner arm and a first outer arm arranged oppositely, and the first inner arm and the first outer arm are connected by a first elastic member. The second clamping arm comprises a second inner arm and a second outer arm arranged oppositely, and the second inner arm and the second outer arm are connected by a second elastic member. One end of the first clamping arm is rotationally connected with one end of the second clamping arm. The elastic part provides a clamping force for the first clamping arm and the second clamping arm. The heart tissue closure device provides a clamping force through the elastic part, and the clamping force is applied to the outer side of the first clamping arm and the second clamping arm, so as to drive the clamping arm to flatten the inner side of the auricle, realize the closure of the auricle, prevent the folding gap caused by the ligation of the auricle, and avoid the risk of residual blood flow.

The application relates to an auricle closure device for closing auricles, comprising: an elastic clip with a proximal end and a distal end; two clip arms arranged on opposite inner sides of the elastic clip, each of the clip arms being connected to a part of the elastic clip close to the distal end and extending in a direction close to the proximal end, the elastic clip driving the two clip arms to approach each other through self-closing to close the auricles; and an auxiliary elastic arm arranged between the elastic clip and the clip arms and used for providing a pressing force of the part of the clip arms close to the proximal end towards the auricles. The application has simple and ingenious structure, the part of the clip arms close to the proximal end is compensated by the auxiliary elastic arm, the clamping force of the part of the clip arms from the distal end to the proximal end on the auricles is substantially equal, the two clip arms keep parallel contact state under the elastic pre-tightening force of the elastic clip and the compensation pressing force of the auxiliary elastic arm, the two clip arms stably and reliably close each part of the auricles, and the complete closing effect on the auricles is ensured.

The invention relates to the technical field of medical instruments, in particular to an auricular appendage clip conveying system which comprises an adjusting actuator and an auricular appendage clip fixing assembly. The adjusting actuator comprises a handle, and a first bending adjusting assembly, a second bending adjusting assembly, an opening and closing assembly and a releasing assembly which are movably arranged on the handle; the auricular appendage clamp fixing assembly comprises a first clamp arm and a second clamp arm which are arranged oppositely, an auricular appendage clamp body is arranged between the front end of the first clamp arm and the front end of the second clamp arm, and an auricular appendage clamp fixing line is connected between the front end of the first clamp arm and the front end of the second clamp arm. Opening and closing, adjustment in the left-right direction and final releasing and closing of the auricle clamp are achieved through all the assemblies on the handle, the auricle clamp is mainly used for clamping and closing a left auricle in a minimally invasive surgery and preventing embolic diseases of atrial fibrillation patients, and the auricle clamp is ingenious in design, novel in structure, good in practicability and beneficial to shortening the surgery time and avoiding thrombus falling.

The invention discloses an auricular appendage clip conveyor, and relates to the technical field of auricular appendage clip conveying devices. The device comprises a control handle; the clamp body mechanism comprises a pair of clamp arms which can be opened and closed by controlling handles; a cross arm for fixing an auricle clamp is arranged at the tail end of each clamp arm; and the lengths of the two cross arms are smaller than the orthographic projection length of the auricular appendage clip. The shape of the clamp body is more convenient for the auricular appendage clamp to pass through an operation window, the angle, the position and the opening and closing of the auricular appendage clamp in the thoracic cavity are also convenient to adjust, the use is convenient, and the operation time can be shortened.

The invention belongs to the field of medical image processing and computer-aided diagnosis, and discloses an evaluation method and system for simulating atrophy degradation after complete closure of a left atrial appendage, and the method comprises the steps: obtaining three-dimensional image data of the left atrial appendage before and after closure and at a plurality of postoperative follow-up time points; constructing a three-dimensional model of the left auricle based on the three-dimensional image data; based on the three-dimensional model, extracting spatio-temporal characteristics representing atrophy and degradation of the left auricle; fusing the spatio-temporal features and the anatomical pathology indexes, and learning the fused time sequence features through a machine learning model to simulate the degradation trajectory of the left auricle; and based on the degradation track and a preset dynamic evaluation model, generating quantitative score and early warning information for evaluating the atrophy state after the left auricle is closed. The problems that in the prior art, the evolution process after left atrial appendage closure cannot be dynamically tracked and quantitatively evaluated, evaluation standards are not uniform, and the evaluation standards are disjointed with a pathological mechanism are solved.

The application discloses a left auricle plugging device, which comprises a sealing part and an anchoring part comprising a plurality of supporting rods, the sealing part and the anchoring part are respectively provided with connecting parts, and the connecting parts of the sealing part and the anchoring part are connected with each other. The left auricle plugging device improves the connecting mode of the sealing part and the anchoring part, shortens the overall distance between the sealing part and the anchoring part, avoids and delays the axial lengthening of the left auricle plugging device as a whole, and further guarantees that the sealing part is attached to and plugs the left auricle port.

The application discloses a left auricle plugging device closing device and closing method, belongs to the technical field of left auricle plugging device, and is used for closing and positioning the proximal end of the left auricle plugging device. The closing device comprises a positioning ring used for cooperating with the end of the supporting rod of the left auricle plugging device to be closed, a clamping groove used for being mutually embedded with the proximal end of the supporting rod of the left auricle plugging device is arranged on the positioning ring in the circumferential direction, the second clamping parts of adjacent clamping grooves are mutually staggered along the axis direction of the positioning ring, and a fixing ring used for tightly pressing the proximal end of the supporting rod of the left auricle plugging device in the positioning ring is coaxially arranged on the outer periphery of the positioning ring. The closing device can reduce the circumferential space occupied by the proximal end of the supporting rod when being closed, thereby reducing the diameter of the positioning ring when the left auricle plugging device of the same specification is closed, the purpose of reducing the overall size of the plugging device in the closed state is achieved, the size requirement of the small-diameter conveying pipe can be met, and the application performance of the left auricle plugging device is improved.

Systems and methods for left atrial appendage closure device specification from two dimensional (2D) Intracardiac Echo imaging (ICE). In an imaging procedure, 2D ICE is used to acquire images of the left atrium of a patient. A model of the left atrium is generated from the images 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 the validated subsequent imaging may be used to select or specify a left atrial appendage closure device in order to, for example, treat atrial fibrillation patients.

The utility model relates to the technical field of left atrial appendage occluders, in particular to an anti-falling left atrial appendage occluder which comprises an arc-shaped occluding sleeve and a nickel-titanium wire fixedly connected with the occluding sleeve, the outer side of the occluding sleeve is fixedly connected with a plurality of positioning needles with the same size, the positioning needles are evenly arranged, and the nickel-titanium wire is fixedly connected with the outer side of the occluding sleeve. The outer side of the positioning needle is wound with sterile fiber cloth, the sterile fiber cloth is fixedly connected with the positioning needle, the positioning needle is arranged in the shape of a circular truncated cone with one narrow end and one wide end, and the relatively narrow end of the positioning needle is fixedly connected with an arc-shaped block. When the plugging sleeve is unfolded, the positioning needle can be driven to pierce towards the inner wall of the left auricle, the sterile fiber cloth is attached to the blood of the left auricle under the action of the positioning needle and finally adheres to the blood of the left auricle, and therefore falling prevention is achieved, and the left auricle plugging device can not easily fall off after positioning is completed.