Abstract: The present disclosure discloses an impeller of a cardiac assist device, and the cardiac assist device. The impeller of the cardiac assist device includes an impeller shaft and a plurality of blades; a shape of the plurality of blades is set such that: blade cascades of the plurality of blades are of arc lines that recess towards a same side, and the blade cascade is a planar unfolding shape of an intersection line where a cylindrical surface intersects with the blade. In the present disclosure, a traditional wing-shaped blade cascade is changed, the blade cascades are of arc lines that recess towards the same side, this design enables blood to pass through the impeller at a smaller inflow angle and a greater outflow angle, the smaller inflow angle may generate a greater lift, so that the impeller obtains a greater output power, and meanwhile, a rotational flow can be prevented from being generated at an inflow port, such that the blood stably flows into the impeller.

Abstract: A leaflet capture device and system, and an assembling method. The leaflet capture device comprises: a wire body configured to be spiral and comprising a distal coil, an intermediate coil, and a proximal coil which are arranged in sequence; and a proximal joint comprising a proximal joint main body portion, a proximal clamping jaw, and a proximal clamping portion.

Abstract: A leaflet capture device and system, and an assembling method. The leaflet capture device comprises: a wire body (1) configured to be spiral and comprising a distal coil (10), an intermediate coil (20), and a proximal coil (30) which are arranged in sequence; and a proximal joint (12) comprising a proximal joint main body portion (120), a proximal clamping jaw (121), and a proximal clamping portion (122).

Abstract: Disclosed in the present application is a composition for removing phospholipids and cell debris, comprising an alcohol, an alcohol ether, and a surfactant, wherein the alcohol accounts for 50-90 wt %, preferably 60-80 wt %; the alcohol ether accounts for 5-40 wt %, preferably 10-20 wt %; the surfactant accounts for 0.1-5 wt %, preferably 1-3 wt %. The present application further provides a method for removing phospholipids and cell debris on biological tissue. The composition of the present application is used for treating biological tissue, and the treated biological tissue has an excellent anti-calcification effect.

Abstract: An interventional artificial heart valve (500) and a medical apparatus. The interventional artificial heart valve comprises a valve stent (1) and an anchor portion (2); the valve stent (1) comprises a body section (10) and a skirt section (120) at an inflow end; the body section (10) is internally provided with a valve leaflet portion (13); at least part of the outer surface of the skirt section (120) is covered by a flexible annular sealing member (15); the flexible annular sealing member (15) comprises a material capable of absorbing blood; at least two connecting elements (16, 17) are disposed on the side of an outflow end of the body section (10); the anchor portion (2) is provided around the periphery of the valve stent (1) and detachably connected to the connecting elements (16, 17).

Abstract: The embodiments of the present disclosure provide an interventional valve stent and an aortic valve. The interventional valve stent may include a valve stent defining a frame lumen. The valve stent may include straight rods connecting an upstream port and a downstream port, and oblique rods connected between the straight rods. An upstream section, a midstream section, and a downstream section may be sequentially formed along a direction from the upstream port to the downstream port.

Abstract: The present disclosure discloses a control handle, which includes an outer clamp arm control mechanism and an inner clamp arm control mechanism. The outer clamp arm control mechanism may be configured to control the movement of an outer clamp arm of a tissue clamping device, and include a sleeve, a first control part, and a sliding part. The sliding part may be disposed in the sleeve. The first control part may rotate to drive the sliding part to move in the sleeve along a length direction of the sleeve, so as to control the opening and closing of the outer clamp arm. The inner clamp arm control mechanism may be configured to control the movement of an inner clamp arm of the tissue clamping device, and include a housing and a second control part. The second control part may pass through and move along a second sliding groove to control the opening and closing of the inner clamp arm relative to the outer clamp arm.

Abstract: A tissue clamping device including a clamp, a first connector, a second connector, and a clip is provided. The clamp may include a supporting unit, a first interior clamping arm, a first exterior clamping arm, a second interior clamping arm, and a second exterior clamping arm. The supporting unit may be connected to the first interior clamping arm, the first exterior clamping arm, the second interior clamping arm, and the second exterior clamping arm. The clamp may be connected to a portion between the first connector and the second connector. A relative movement of the first connector and the second connector may drive the first interior clamping arm and the second interior clamping arm to be expanded or folded relatively. The clip may include a first clip and a second clip, and the first clip and the second clip may be respectively expanded or folded.

Abstract: The present disclosure provides using a double-stranded oligonucleotide compound as a novel therapy to improve the quality of life and joint function of patients with hemophilia A and hemophilia B.

Abstract: A prosthetic mitral annuloplasty ring includes a wire, an adjustment member for changing a length of the wire and a jacketing annulus for adjusting a radial dimension of the mitral valve annuloplasty ring. The jacketing annulus is sleeved over the wire and forms, together with the adjustment member, a shape matching that of a native mitral valve annulus. After the prosthetic mitral annuloplasty ring is implanted by suturing in a conventional surgical procedure and the patient's heart starts to beat again, the adjustment member can be connected to the delivery device and the wire length therein can be adjusted by a rotating operation of the delivery device so that the mitral valve annuloplasty ring will be expanded or contracted until the prosthetic mitral annuloplasty ring perfectly fits the native mitral valve annulus in shape, effectively avoiding the problem of incomplete mitral leaflet coaptation.

Abstract: An artificial cardiac valve is disclosed, which includes an outer stent; an inner stent nested within and connected to the outer stent; leaflets disposed inside the inner stent; and membranes attached to walls of the outer and inner stents. The inner stent is a cylindrical mesh tube, and the outer stent includes a first stent segment, a second stent segment and a third stent segment which are connected sequentially. The first stent segment is a mesh tube. The second stent is a mesh tube having a substantially D-shaped cross-section, and the third stent segment is a flared mesh tube. The first stent segment has a maximum diameter that is equal to a diameter of the second stent segment and to a minimum diameter of the third stent segment. In this stent design, the inner stent can withstand traction forces from the leaflets, and the outer stent is adapted to match the anatomy of the native valve.

Abstract: A prosthetic mitral annuloplasty ring includes a wire, an adjustment member for changing a length of the wire and a jacketing annulus for adjusting a radial dimension of the mitral valve annuloplasty ring. The jacketing annulus is sleeved over the wire and forms, together with the adjustment member, a shape matching that of a native mitral valve annulus. After the prosthetic mitral annuloplasty ring is implanted by suturing in a conventional surgical procedure and the patient's heart starts to beat again, the adjustment member can be connected to the delivery device and the wire length therein can be adjusted by a rotating operation of the delivery device so that the mitral valve annuloplasty ring will be expanded or contracted until the prosthetic mitral annuloplasty ring perfectly fits the native mitral valve annulus in shape, effectively avoiding the problem of incomplete mitral leaflet coaptation.

Abstract: An artificial cardiac valve is disclosed, which includes an outer stent; an inner stent nested within and connected to the outer stent; leaflets disposed inside the inner stent; and membranes attached to walls of the outer and inner stents. The inner stent is a cylindrical mesh tube, and the outer stent includes a first stent segment, a second stent segment and a third stent segment which are connected sequentially. The first stent segment is a mesh tube. The second stent is a mesh tube having a substantially D-shaped cross-section, and the third stent segment is a flared mesh tube. The first stent segment has a maximum diameter that is equal to a diameter of the second stent segment and to a minimum diameter of the third stent segment. In this stent design, the inner stent can withstand traction forces from the leaflets, and the outer stent is adapted to match the anatomy of the native valve.

Abstract: An integrated pylon structure for a propulsion system is suitable for one end to be connected to an aircraft wing and the other end to be connected to an aircraft engine. The pylon structure includes a pylon box section (110) formed from an upper and a lower bean, a frame (100) and a side wall panel. The pylon structure has a thrust reverser hood connection structure, provided on the side wall and connected with a nacelle thrust reverser hood having a front fixed hood (301) and a rear movable hood (302). A guide rail allows the rear movable hood to slide and open relative to the pylon box section. The engine thrust reverser hood is directly connected to the side wall of the pylon box section and a guide rail on the side wall guides the opening of the thrust reverser hood.

Abstract: A front installation node is suitable for integral forming with a front end frame of an aircraft pylon and includes a first lug and a second lug, each respectively protruding outwardly from one of the two sides of the frond end frame; a first connecting rod and a second connecting rod, one end thereof being respectively connected to the first lug and the second lug, and the other end thereof being respectively suitable for connecting to an aircraft engine. The first connecting rod can pivotally connect to the first lug at a first connection point. The second connecting rod and the second lug are respectively connected at a second connecting point and a third connecting point. Using the front installation node to transmit torque is beneficial in reducing the external width of a rear installation node, reducing engine fuel consumption.

Abstract: An invasive cardiac valve comprises a tubular stent (1) and a valve (2). One end of the tubular stent (1) is of a frusto-conical structure, the other end is wide open, and the diameter of the open end is greater than the diameter of the frusto-conical end. The valve (2) is attached to the frusto-conical end of the tubular stent (1); and a delivery and retrieval hole (4) of the cardiac valve is provided at the top of the open end of the tubular stent (1). Because the diameter of the open end is greater than the diameter of the frusto-conical end, the cardiac valve can be effectively fixed in a position of aortic annulus to prevent the cardiac valve displacement caused by the impact of the blood flow. Because the valve (2) is attached to the frusto-conical end of the tubular stent (1), the valve (2) can totally avoid the left and right coronary ostia and does not affect the haemodynamics of the coronary artery.

Abstract: A front installation node is suitable for integral forming with a front end frame of an aircraft pylon and includes a first lug and a second lug, each respectively protruding outwardly from one of the two sides of the frond end frame; a first connecting rod and a second connecting rod, one end thereof being respectively connected to the first lug and the second lug, and the other end thereof being respectively suitable for connecting to an aircraft engine. The first connecting rod can pivotally connect to the first lug at a first connection point. The second connecting rod and the second lug are respectively connected at a second connecting point and a third connecting point. Using the front installation node to transmit torque is beneficial in reducing the external width of a rear installation node, reducing engine fuel consumption.

Abstract: A ground-based videometrics guiding method for aircraft landing or unmanned aerial vehicles recovery is provided. The method comprised the following steps: setting videos(1,2,3,4,5,6) near the landing area of the aircraft or unmanned aerial vehicles; real-time imaging the aircraft or unmanned aerial vehicles during their final approaches; and real-time measuring the trajectory, velocity, acceleration, post and other motion parameters of the aircraft or unmanned aerial vehicles by analyzing the video images and using videometrics technology, so as to provide guiding information for the aircraft landing or unmanned aerial vehicles recovery.

Abstract: An integrated pylon structure for a propulsion system is suitable for one end to be connected to an aircraft wing and the other end to be connected to an aircraft engine. The pylon structure includes a pylon box section (110) formed from an upper and a lower bean, a frame (100) and a side wall panel. The pylon structure has a thrust reverser hood connection structure, provided on the side wall and connected with a nacelle thrust reverser hood having a front fixed hood (301) and a rear movable hood (302). A guide rail allows the rear movable hood to slide and open relative to the pylon box section. The engine thrust reverser hood is directly connected to the side wall of the pylon box section and a guide rail on the side wall guides the opening of the thrust reverser hood.

Abstract: A folding optical path transfer videometrics method for measuring the three-dimensional position and attitude of non-intervisible objects is disclosed. In one aspect, the method includes the following: constructing a folding optic path between an invisible target and a reference, disposing transfer station comprising a camera, a cooperating mark and a laser range finder on each break point in the folding optic path. The method may further include processing an image shot by each camera, accounting for the distance measured by the laser range finder, obtaining a position and posture information corresponding to each adjacent transfer station, summing the values from the reference to the invisible target, and achieving three-dimensional position and posture of the invisible target relating to the reference.