Abstract: The present invention relates to a left atrial appendage occluder having a sealing disc and a fixing bracket which is connected to the sealing disc and located at one side of the sealing disc; the fixing bracket comprising a connecting portion connected to the sealing disc, and a plurality of supports. After radiating out distally from the connecting portion, the plurality of supports are bent to extend proximally to form a plurality of spaced suspended supporting segments. The left atrial appendage occluder further includes a thin film, with all the supports being connected through the thin film.

Abstract: Disclosed is a covered stent (100), including a hollow tubular main body (10), and a window (20) provided on a side wall of the tubular main body (10). An elastic supporting member (30) is provided at a periphery of the window (20); an imaging member (40) is provided on the elastic supporting member (30); and at least part of the imaging member (40) is movably connected to the elastic supporting member (30). Since the imaging member (40) and the elastic supporting member (30) are located at the periphery of the window (20), the imaging member (40) and the elastic supporting member (30) enable the periphery of the window (20) to simultaneously have a good imaging performance and a good supporting performance.

Abstract: A covered stent (100A), including a mesh-shaped support structure, and further including a first section (10A) and a second section (20A) connected to a proximal end and/or a distal end of the first section. The first section includes a plurality of first corrugated rings (11A), and a first covering film (12A) which covers surfaces of the first corrugated rings; the second section includes a plurality of second corrugated rings (21A), two adjacent second corrugated rings being fixedly connected to each other; a plurality of windows (201A) are formed between the plurality of second corrugated rings; and the plurality of first corrugated rings and the plurality of second corrugated rings form the support structure.

Abstract: A plugging device, including a first part, and a second part connected to the first part. The first part or the second part includes a plurality of braiding filaments and a gathering member; portions of the braiding filaments that are close to one ends of the braiding filaments cooperate to form a disc face. The plugging device further includes a film member. The film member at least covers part of an outer surface of the disc face; the gathering member includes an inner sleeve and an outer sleeve, both of which are hollow and sleeved; and one end of each braiding filament and at least part of a gathering region of the film member are all fixed to the gathering member.

Abstract: A conveyor and a conveyor system are provided. The conveyor comprises a lumen assembly and a self-locking mechanism connected to the lumen assembly, wherein the lumen assembly comprises an inner core tube, a recovery sheath movably surrounding the inner core tube, and an outer sheath movably surrounding the recovery sheath; the self-locking mechanism is connected to the recovery sheath; and the outer sheath can move relative to the inner core tube in an axial direction of the conveyor. The self-locking mechanism has a self-locked state and an unlocked state, wherein when the self-locking mechanism is in the unlocked state, the recovery sheath can move relative to the inner core tube in the axial direction of the conveyor; and when the self-locking mechanism is in the self-locked state, the recovery sheath maintains stationary relative to the inner core tube.

Abstract: An intervention guidance device (10) includes a main body portion (100) and a guidance portion (200). The guidance portion (200) has a contracted configuration and an expanded configuration. In the expanded configuration, the guidance portion (200) has a central area (201) and a closed outer edge (202). In the contracted configuration, the outer edge (202) is farther away from the main body portion (100) than the central area (201), and the guidance portion (200) is restorable from the contracted configuration to the expanded configuration. In the intervention guidance device (10), the radial dimension of the guidance portion (200) is larger than the distance between the chordae tendineae, so that an effective access path that does not cross the chordae tendineae can be established, the subsequent implantation of a heart valve prosthesis does not pass through the chordae tendineae, and the success rate of a heart valve prosthesis implantation surgery can be improved.

Abstract: A left atrial appendage (LAA) occluder includes a sealing portion and a fixing portion connected to the sealing portion, and one or more sealed seed sources encapsulated with radioactive particles. The sealed seed sources are arranged on the sealing portion and/or the fixing portion (20) and configured for forming an annular isolation band on an inner wall of an LAA after the radioactive particles are released. The annular isolation band is configured for blocking the electrical signal conduction between the LAA and a left atrium. In the LAA occluder, the annular isolation band is formed on the inner wall of the LAA by the release of the radioactive particles in the sealed seed sources arranged on the sealing portion and/or the fixing portion.

Abstract: A medical cutting assembly (10) and a volume reduction catheter system are provided. The medical cutting assembly (10) includes a cutter head (101) and a limiting member (102) connected to the cutter head (101), where the cutter head (101) includes a delivery portion (1012); the limiting member (102) includes a decomposing portion (1021); and when the cutter head (101) and the limiting member (102) rotate relative to each other, the decomposing portion (1021) extends through the delivery portion (1012). The volume reduction catheter system includes a cutting section and a transfer section. The delivery portion (1012) can transfer excess tissue cut by the cutter head (101) from a distal end to a proximal end. The limiting member (102) is provided with the decomposing portion (1021).

Abstract: A vascular stent, including an inner stent tube as well as a proximal support and a distal support which are arranged on an outer wall of the inner stent tube. When the vascular stent is in a compressed configuration, the proximal support and the distal support are both folded and close to the outer wall of the inner stent tube; when the vascular stent is expanded from the compressed configuration to an expanded configuration, a free end of the proximal support expands towards the distal end of the vascular stent, and a free end of the distal support expands towards the proximal end of the vascular stent. The vascular stent can be anchored to a main stent tube in a blood vessel by the proximal support and the distal support, preventing the vascular stent from shifting or becoming dislodged after being transplanted into the main stent tube.

Abstract: A stent graft; the stent graft is provided in the axial direction thereof with at least one Region T, and the Region T includes a plurality of wavy rings; in the circumferential direction, the Region T includes a region A and a Region B that is connected to the region A, the ratio of the area of the region A to the area of the Region T being 1/4-2/3, the ratio of the coverage rate of the wavy rings in the region A to the coverage rate of the wavy rings in the Region B being 1/5-9/10, and the ratio of the coverage rate of the wavy rings within any circular region having a diameter of 20 mm within the region A to the coverage rate of the wavy rings in the region A being 0.7-1.3.

Abstract: An occluding device includes a sealing disc. The sealing disc includes a proximal disc surface and a distal disc surface, as well as an edge connecting the proximal disc surface and the distal disc surface. The sealing disc is provided with at least one buffer member. The at least one buffer member is distributed along the edge. The occluding device can reduce the damage inflicted on internal tissues caused by the edge of the sealing disc, better protect the internal tissues and reduce the risk of surgery.

Abstract: An absorbable iron-based instrument is provided having an iron-based substrate, a zinc-containing protector in contact with the iron-based substrate, and a degradable polyester in contact with the iron-based substrate and/or the zinc-containing protector. The range of the ratio of the mass of the zinc-containing protector to the mass of the iron-based substrate is 1:200 to 1:2. In the degradable polyester, the mass fraction of a low-molecular-weight part with a molecular weight of less than 10,000 is less than or equal to 5%; alternatively, in the degradable polyester, the mass fraction of a residual monomer is less than or equal to 2%.

Abstract: A thrombus removal apparatus includes a thrombus removal device, (a push-pull member (connected to the thrombus removal device, at least two connecting rods extending from the proximal end to the distal end along the thrombus removal device, and a capture member disposed on the connecting rods.) The thrombus removal device also includes a lumen structure, wherein the connecting rods and the capture member (enclose the lumen structure. The capture member includes a first supporting rod and a second supporting rod, wherein the proximal end of the first supporting rod and the proximal end of the second supporting rod are respectively connected to different connecting rods and form a capture member starting end and a capture member free end. The thrombus removal apparatus solves the problems that the existing thrombus removal apparatuses do not firmly capture thrombi during the process of thrombus removal and have poor wall-attaching performance.

Abstract: A heart valve prosthesis, including a valved stent and valve leaflets, where the valve leaflets are accommodated in the valved stent, at least two valve leaflets are provided and centrosymmetrically distributed along the circumferential direction of an inner surface of the valve leaflet stent, one ends of each of two adjacent valve leaflets are combined together on the valve leaflet stent to form a valve corner, the valved stent is provided with a positioning member, and the projections of a perpendicular line of one of the valve corners to the axis of the valved stent and a perpendicular line of the positioning member to the axis of the valved stent are coincident on a plane perpendicular to the axis of the valved stent. The heart valve prosthesis can considerably reduce regurgitation at the center.

Abstract: The present disclosure relates to an ostomy method and an implantation method. The ostomy method includes steps of making an incision in the chest to expose the heart, puncturing the left ventricle with a puncture needle, thrusting the puncture needle into the ventricular septum and then into the right ventricle to form a puncture site on the ventricular septum, and dilating the puncture site of the ventricular septum with a dilator to form an opening. The method of the present disclosure can reduce the death rate.

Abstract: A branch vessel stent including a stent body and a first developing member, where the first developing member includes a first developing portion and a second developing portion. A length of the first developing portion and a length of the second developing portion in an axial direction of the stent body are both not less than 0.5 mm. A distance between the intersections of the first developing portion and the second developing portion on a plane perpendicular to the axial direction of the stent body gradually increases from a position where the distance is the minimum distance to an end that is away from a first end of the first developing portion or the second developing portion. The minimum distance between the intersections of the first developing portion and the second developing portion on a plane perpendicular to the axial direction of the stent body is less than 2 mm.

Abstract: An implant delivery device includes a holder, a guide rod, and a sliding handle. One end of the guide rod is connected to the holder, and the other end of the guide rod penetrates the sliding handle. Multiple first engagement structures axially spaced apart from each other are disposed on an outer surface of the guide rod. The delivery device also includes a position locking device disposed in the sliding handle. The position locking device includes a tooth block) and an elastic component. The tooth block is sleeved on the guide rod and is provided with a second engagement structure. The elastic component and the tooth block cooperate to allow the first engagement structures and the second engagement structure to engage with each other allowing an implant to be in a release-locked state. These and other elements allow for the implant to be gradually released or release-locked.

Abstract: A luminal stent includes a tube body that can be compressed and expanded in the radial direction, and an anti-leakage structure. The tube body is divided by the anti-leakage structure into a first tube body positioned on one side of the anti-leakage structure, and a second tube body positioned on the other side of the anti-leakage structure, with at least part of the first tube body being encircled by the anti-leakage structure. In a compressed state, the maximum compression diameter of the anti-leakage structure and the first tube body encircled by the anti-leakage structure is greater than or equal to the maximum compression diameter of the second tube body.

Abstract: A stent graft, including multiple wavy rings. The stent graft includes, in a circumferential direction, a region A and a region B connected to the region A. Each wavy ring includes a first wavy section located in the region A, and a second wavy section located in the region B. The wave included angle of the first wavy section is about 70°-120°; the ratio of the wave height of the first wavy section to the spacing between adjacent first wavy sections is 1/4-3; the wave included angle of the second wavy section is 30°-60°, the ratio of the wave height of the second wavy section to the spacing between adjacent second wavy sections is 1/4-3/2, and the ratio of the wave height of the first wavy section to the wave height of the second wavy section is greater than or equal to 1/3 and less than 1.

Abstract: A luminal stent has a tube body and a skirt surrounding the tube body. The skirt has a flexible connecting section and a stent graft connected to a proximal end of the flexible connecting section. A distal end of the flexible connecting section is sealed and connected to the outer surface of the tube body. A proximal end of the stent graft is suspended and provided with a first radial support structure. When the flexible connecting section is radially compressed, at least a part of the first radial support structure is bent towards a direction distant from the tube body. Also provided is a stent system including the luminal stent. The stent system and the luminal stent can prevent type III endoleaks.