Abstract: Disclosed are an audio synchronous circuit and an audio synchronous method. The audio synchronous circuit receives at least one beacon packet to generate WiFi time synchronization function (TSF) data, compares the WiFi TSF data with I2S TSF data according to a synchronous control signal to obtain a frequency offset, and compensates a digital audio clock according to the frequency offset. Thus, the audio synchronous circuit can adjust a frequency of the digital audio clock according to the frequency offset to complete synchronization with a transmitter, to avoid unpredictable delays caused by software processing and wireless channel competition, and achieve the purpose of more accurate time synchronization.

Abstract: A transapically-implanted mitral valve flexible closure plate blocking body comprising: a flexible closure plate (7), a left and right guide wire (8), a guide ring (13) and a fixation plug (12). The fixation plug (12) is fixedly implanted at a cardiac apex (4) of the heart, the flexible closure plate (7) is located at an anterior and posterior leaflet junction of the heart, the left and right guide wire (8) respectively pass through a hook (6) on the same side, are fixedly connected to the flexible closure plate (7) in the upper portion on the same side, and respectively pass through a guide ring (13) fixedly connected in the lower portion of the flexible closure plate (7) on the same side, and are fixedly connected to the fixation plug (12). An implantation method thereof is also provided.

Abstract: An apical implantation mitral valve balloon closure plate blocking body and an implantation method, for human heart repair are disclosed. A balloon closure plate made from an elastic plastic material which may be filled with a gas or a curable liquid is implanted via a small incision on the left side of the chest, enters the left ventricle via the apex, and is placed and fixed at a backflow hole position of a front and rear leaflet closure point of the mitral valve. The present disclosure treats diseases such as functional mitral valve regurgitation, and the success rate for repairing functional mitral valve backflow is more than 90%.

Abstract: An adaptively positioned mitral valve closure plate blocker for repairing mitral regurgitation, comprising a suture and shaping ring (4.1) sutured on a mitral ring (2.1) and a closure plate (4.2); the closing plate (4.2) comprises a tongue-shaped plate and a strut (4.3) located at the top of the tongue-shaped plate and connected to the suture and shaping ring; the closing plate (4.2) can be connected to the suture and shaping ring (4.1), being capable of flapping back and forth and twisting left and right. The suture and shaping ring is sutured on the valve ring (2.1) of the mitral valve (2) of a patient in a thoracotomy and open heart surgery, thus shaping the disease expanded mitral ring (2.1), and supporting the closing plate (4.2); when a heart contracts and valve leaflets close, the closing plate (4.2) flaps and twists depending on the position of a regurgitation opening at the free edge of the valve leaflets to realize adaptive positioning of the closing plate (4.2), so that the closing plate (4.

Abstract: Disclosed are a transapically-implanted mitral valve flexible closure plate blocking body and an implantation method which belong to the technical field of human heart repair. A flexible closure plate (7) is implanted via a small incision on the left side of the chest, enters the left ventricle (3) via the cardiac apex (4), and is placed and fixed at a regurgitation gap position of the anterior and posterior leaflet junction (5) of the mitral valve (2). During diastoles, the mitral valve (2) opens, and blood flows from the left atrium (1) to the left ventricle (3) via two channels between the anterior and posterior leaflets (2.2, 2.3) and the closure plate (7). During systoles, the anterior and posterior leaflets (2.2, 2.

Abstract: An apical implantation mitral valve balloon closure plate blocking body and an implantation method, for human heart repair are disclosed. A balloon closure plate made from an elastic plastic material which may be filled with a gas or a curable liquid is implanted via a small incision on the left side of the chest, enters the left ventricle via the apex, and is placed and fixed at a backflow hole position of a front and rear leaflet closure point of the mitral valve. The present disclosure treats diseases such as functional mitral valve regurgitation, and the success rate for repairing functional mitral valve backflow is more than 90%.

Abstract: An adaptively positioned mitral valve closure plate blocker for repairing mitral regurgitation, comprising a suture and shaping ring (4.1) sutured on a mitral ring (2.1) and a closure plate (4.2); the closing plate (4.2) comprises a tongue-shaped plate and a strut (4.3) located at the top of the tongue-shaped plate and connected to the suture and shaping ring; the closing plate (4.2) can be connected to the suture and shaping ring (4.1), being capable of flapping back and forth and twisting left and right. The suture and shaping ring is sutured on the valve ring (2.1) of the mitral valve (2) of a patient in a thoracotomy and open heart surgery, thus shaping the disease expanded mitral ring (2.1), and supporting the closing plate (4.2); when a heart contracts and valve leaflets close, the closing plate (4.2) flaps and twists depending on the position of a regurgitation opening at the free edge of the valve leaflets to realize adaptive positioning of the closing plate (4.2), so that the closing plate (4.

Abstract: A method and apparatus directed to the repair of regurgitant mitral valves. Mitral valve regurgitation occurs due to miscoaptation of mitral valve leaflets. The mitral valve repair apparatus of the present invention is comprised of a tongue plate which is supported by a suture ring. The apparatus is inserted into the mitral valve orifice with the suture ring sutured to the mitral valve annulus placing the tongue plate between the two mitral valve leaflets. When the mitral valve opens, blood flows through the orifices of the apparatus. When the mitral valve closes, the two miscoaptated mitral valve leaflets cover the orifices on the apparatus and the tongue plate blocks the hole formed by leaflets and seals the leaky flow.

Abstract: An annuloplasty chain (10) is disclosed. The chain (10) can be fabricated from metal, and include a shielding layer (60) and a suturing layer (80).