8 results about "Heart mitral valve" patented technology

The application discloses a kind of heart mitral valve medical image segmentation model, training method, segmentation method and equipment.The segmentation model is improved based on DoubleU-Net architecture, and the two independent and serial U-Net networks contain encoder and decoder;Use EfficientNetB7 network as the feature extraction encoder of front-end U-Net network;Two U-Net networks are sequentially introduced into multi-core residual convolution (MKRC) module, hollow space convolution pyramid pooling (ASPP) module and mixed triple attention (TAG) module after extracting features;The input end of the decoder introduces triple attention gate (TAM) module.The segmentation model training uses hybrid loss function, combines binary cross-entropy loss and Dice loss, balances the class imbalance problem and improves the segmentation precision.The application can automatically and accurately segment heart and related vascular structures, thereby solving the technical problems that accurate and efficient heart mitral valve image segmentation is difficult in the prior art.

The application discloses a flexible capturing device for a heart bicuspid valve, which mainly comprises a capturing mechanism and a control mechanism; the capturing mechanism comprises a sheet-shaped capturing structure and an energy storage spring sheet; the sheet-shaped capturing mechanism comprises a curved paper folding structure, a cable fixing block and a cable; and the control mechanism comprises a feeding mechanism, a cable control structure and a shell. The application has simple structure, can reduce the difficulty of surgical operation, reduce the dependence on the cooperation of many people, and improve the surgical efficiency.

1. The name of the design product: surgical retractor. 2. The use of the design product: the design product is used for the exposure of the mitral valve in the clinical center. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The present application relates to a kind of flexible capture device of heart mitral valve, including shell, drive mechanism, capture main body, spring compression mechanism and flexible capture mechanism, the inner wall of one end of shell is equipped with first track, variable track area and second track;Drive mechanism one end is equipped with first protruding tooth;Capture main body one end outer surface is equipped with second protruding tooth, and the other end face installs flexible capture mechanism;Second protruding tooth is contacted with first protruding tooth, located in first track or second track;Drive mechanism, capture main body and flexible capture mechanism are all connected with traction rope.Compared with prior art, the present application has by setting flexible capture mechanism, can fix mitral valve, solve valve reverse problem, can effectively reduce the phenomenon that medical surgical clip is not stable in surgery, to improve surgical efficiency;Capture device is cylindrical as a whole, each component is mutually nested, compact structure, is driven by traction rope, need not complex power structure, overall volume is small, and the advantages such as convenient operation.

The invention relates to an instrument, also called an aorto-mitral heart valve sizer, for the determination of the size of heart valves that enables during surgical operations with the removal of the aorto-mitral curtain (300) the simultaneous determination of the sizes of the aortic valve and the mitral valve of the human heart, the selection and the subsequent insertion of the aortic valve prosthesis and the mitral valve prosthesis into the human heart. The aorto-mitral heart valve sizer comprises an aortic valve prosthesis template (element 1), a mitral valve prosthesis template (element 2), a first grip member (element 3) that is holding the mitral valve prosthesis template (element 2), and a second grip member (element 4) that is holding the aortic valve prosthesis template (element 1).

The embodiment of the application discloses a method and device for judging mitral valve prolapse and pathological segmentation based on a heart ultrasound image; the method comprises the following steps: acquiring a heart ultrasound image to establish a heart ultrasound image data set; training and testing a small sample classification model based on a picture after noise reduction and preprocessing; obtaining a heart mitral valve medical image data set and a heart mitral valve prolapse image data set; inputting, training and verifying a pathological segmentation neural model; preliminarily verifying the pathological segmentation neural model to obtain a classification-segmentation model; sequentially inputting a new medical ultrasound image into the classification-segmentation model to detect whether classification and pathological segmentation are completed; and realizing automatic judgment and segmentation of the heart ultrasound image for the heart mitral valve prolapse, short analysis and processing time, high efficiency, and high medical image judgment accuracy.

The invention belongs to the technical field of modern agriculture, and particularly relates to a construction method and application of a Wuzhishan pig mitral valve in-vitro model. According to the method, the in-vitro three-dimensional culture model of the heart mitral valve interstitial cells of the characteristic pig breed Wuzhishan in Hainan province is constructed for the first time, the low activation level of MVIC can be maintained along with the number of culture days, and the MVIC tends to be mature after being cultured for 14 days. By adopting the method disclosed by the invention, the problem that the MVIC is very easy to activate during in-vitro two-dimensional culture of the MVIC is solved, the culture medium capable of maintaining a relatively low activation level of the MVIC in vitro is obtained through screening, and the culture medium is used for constructing an in-vitro three-dimensional model which can be used as an in-vitro model of the MVIC in a static state, so that a platform is provided for mechanism research of MVIC activation. The model capable of reducing the activation of the mitral valve interstitial cells of the Wuzhishan pigs by adopting some construction methods can be used as an animal medical model for researching pathogenesis, and can also provide help for the preservation of heart cells of the Wuzhishan pigs.

The invention relates to the technical field of medical instruments, and discloses a heart mitral valve replacement device which comprises a first covering film, and the surface of one end of the first covering film is connected with a left atrial side positioning piece. The left atrial side positioning piece is tightly attached to a mitral valve ring, the atrial side positioning piece and the lower edges of valve leaflets form clamping force through chordae tendineae, the displacement phenomenon of the valve in the heartbeat process is effectively avoided, the success rate of the valve replacement operation is greatly increased, the displacement risk is reduced, the three-leaf valve is opened and closed in the shape of three valve leaflets, and the valve replacement efficiency is improved. In the blood flowing process, the valve leaflets can be smoothly opened and closed, blood flow resistance is reduced, blood backflow is avoided, recovery and maintenance of heart functions are facilitated, and the valve can be conveniently stored in a conveying device in the implanting process due to the compressible deformation and shape memory functions of the nickel-titanium alloy net and the ventricular side positioning piece; and accurate release is realized after the target position is reached, so that the surgical operation is simpler and more convenient.