Abstract: A delivery sheath and a medical device. The delivery sheath includes an outer canal and a traction structure. The outer canal includes a connecting canal, a canal body, and a distal canal. The canal body is located between the connecting canal and the distal canal. The canal body includes a first flexible canal, a spacer canal, and a second flexible canal. The spacer canal is provided between a distal end of the first flexible canal and a proximal end of the second flexible canal. The hardness of the connecting canal is greater than that of the first and second flexible canals, and the hardness of the spacer canal is greater than that of the first and second flexible canals. The traction structure includes a first traction fiber and a second traction fiber.

Abstract: A stent graft comprises a plurality of wavy rings sequentially arranged in a spaced manner, and membranes fixed to the plurality of wavy rings, wherein the stent graft comprises, in a circumferential direction, at least one keel region and a non-keel region connected to the keel region, the keel region having an axial shortening rate that is less than that of the non-keel region, and the axial shortening rate of the keel region is 10-40%. The stent graft can be bent in all directions, and the keel region on the stent graft can provide a sufficient amount of an axial support force for the stent.

Abstract: A left atrial appendage occluder comprises an elastic closure disc, and a supporting structure connecting with the closure disc and being located on one side of the closure disc, with the supporting structure comprising a central end connecting with the closure disc and a plurality of interconnected and bent struts, wherein at least one anchoring thorn is set near the end of at least one strut with the anchoring thorn toward the closure disc. The left atrial appendage occluder has a stable structure, a good positioning and sealing effect on the cavity wall in the left atrial appendage, and it is easy to position repeatedly; it can also be recycled before separating from a conveyor. When in surgical operation, the left atrial appendage occluder can select the position area based on the actual shape and size of the patient's left atrial appendage, so the surgical risk is lowered.

Abstract: A medical apparatus system (1000) is provided, including a medical apparatus (100) and a fixing plate (900) for fixing the medical apparatus (100). A fixing member (901, 902, 903, 1003, 1004) is formed by cutting along a trajectory (904) on the fixing plate (900); the fixing member (901, 902, 903, 1003, 1004) includes a free end (908, 9031, 10032, 10042) and a connection end (907, 9035, 10031, 10041); the connection end (907, 9035, 10031, 10041) is connected to a fixing plate body (990); the free end (908, 9031, 10032, 10042) can protrude from a plane at which the fixing plate body (990) is located. The fixing member (901, 902, 903, 1003, 1004) can surround an outer surface of the medical apparatus (100) to fix the medical apparatus (100); or the medical apparatus (100) can pass through the fixing member (901, 902, 903, 1003, 1004) and be fixed. The trajectory (904) includes a starting end (905, 1007) and a terminating end (906, 1008).

Abstract: A covered stent (100) includes a first wave ring (20) provided on at least one end of the covered stent (100), wherein the first wave ring (20) is formed of braided wires by means of braiding; each of the braided wires has wire heads (21) and a wire rod (22), with the wire heads (21) being located at two ends of the wire rod (22); and the wire heads (21) of the braided wire are wound around the adjacent wire rod (22); and the covered stent (100) further includes a limiting unit (40), with the limiting unit (40) being arranged on the wire head (21) and the wire rod (22) adjacent to the wire head (21), and the limiting unit (40) limiting the range of axial and/or radial movement of the wire head (21) relative to the wire rod (22).

Abstract: A conveyor and a lumen apparatus delivery system. The conveyor includes a sheath core tube, a delivery sheath and an operating handle. The proximal end of the sheath core tube and the proximal end of the delivery sheath are both connected to the operating handle. The delivery sheath and the sheath core tube are both a hollow tube. The delivery sheath is sleeved on the sheath core tube in an axially slidable manner, and the delivery sheath and the sheath core tube cooperatively define a storable cavity. The delivery sheath includes a loading portion, a pushing portion and a connecting portion. The proximal end of the loading portion is connected to the distal end of the pushing portion; the proximal end of the pushing portion is connected to the distal end of the connecting portion, and the proximal end of the connecting portion is connected to the operating handle.

Abstract: A left atrial appendage (LAA) occluder and an occluding system are provided. The LAA occluder includes a sealing portion and an ablation portion arranged in the sealing portion, as well as a hollow proximal connector at a proximal end of the sealing portion. The ablation portion is connected to the proximal connector. The ablation portion is used to freeze an LAA after being injected with cryogen so as to form an annular isolation band on an inner wall of the LAA for blocking the conduction of electrical signals between the LAA and a left atrium.

Abstract: A branch vessel stent comprising a stent body and a first developing member, wherein the first developing member comprises 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 not more than 2 mm.

Abstract: An occluder, an occluding system, and a conveying device are provided. The occluder includes an occluding frame. The occluding frame includes a first occluding unit, a middle portion occluding unit, a second occluding unit, and waist portions. Both ends of the middle portion occluding unit are connected to the first occluding unit and the second occluding unit, respectively, by the waist portions. A fixing member is sleeved on each waist portion. A channel is formed at a middle portion of each fixing member. The occluding frame has an inner cavity. A first opening is formed on the first occluding unit. A second opening is formed on the second occluding unit. The first opening, the channel, the inner cavity, and the second opening are communicated to form a path. A locking member can be omitted in the occluder.

Abstract: A covered stent includes a tubular main stent and a connection stent disposed on the main stent. An opening is formed in a side wall of the main stent. The connection stent includes a fixed segment connected to the side wall of the main stent and a free segment connected to the fixed segment. Each of the fixed segment and the free segment further includes a stent and a coating covering the surface of the stent. One end of the free segment distant from the fixed segment is connected to the edge of the opening, and a gap is formed between one side of the free segment near to the side wall of the main stent and the side wall of the main stent. This stent can effectively resolve the problem of the limitation of an adjusted angle at a connection segment of an external connection stent and has better flexibility.

Abstract: A sheath, including a sheath body, a handle, and a traction wire. The traction wire includes a first traction wire. The handle includes a first guide rail member and a first slider. The first slider is connected to the first traction wire. A first groove is provided on an outer wall of the first guide rail member along an axial direction. The first groove includes a first bottom and a first side wall. The first slider slides in the first groove along the first side wall so as to drive the first traction wire to move. At least part of the outer wall of the first guide rail member is radially recessed to a central shaft of the first guide rail member to form the first groove.

Abstract: The present disclosure relates to an occluder pushing device and an occluder delivery system, wherein the pushing device includes a pushing component and a handle. The pushing component includes a pushing tube and a traction element slidably inserted into the pushing tube. The handle is fixedly connected to a proximal end of the pushing tube and internally provided with a moving component and a locking component. The moving component includes a translation mechanism and a rotation mechanism, where the translation mechanism is used to drive the traction element to move axially inside the pushing tube, and the rotation mechanism is used to drive the traction element to rotate axially inside the pushing tube. The locking component is used to lock relative positions of the traction element and the pushing tube, and the rotation mechanism includes a locking structure for locking or releasing linkage between the rotation mechanism and the traction element.

Abstract: A vascular stent (100) comprises a plurality of wave loops. In its natural state, in two of the wave loops which are adjacent in a group, a part of a wave crest of a lower layer wave loop are in a restrained connection with a part of a wave trough of an upper layer wave loop; the other part of the wave crest of the lower layer wave loop passes through the other part of the wave trough of the upper layer wave loop, and the other part of the wave crest and the other part of the wave trough are in a non-contact mutually-suspended connection. Some of the wave crests and wave troughs of the vascular stent (100) are in the non-contact mutually-suspended connection rather than the restrained connection, so that the maximum flexibility is provided to the stent, and meanwhile, the overall stability of the stent is guaranteed. The stent (100) can maintain a good shape during both implantation and the release process, so that safety during release is ensured.

Abstract: A stent graft comprises a plurality of wavy rings sequentially arranged in a spaced manner, and membranes fixed to the plurality of wavy rings, wherein the stent graft comprises, in a circumferential direction, at least one keel region and a non-keel region connected to the keel region, the keel region having an axial shortening rate that is less than that of the non-keel region, and the axial shortening rate of the keel region is 10-40%. The stent graft can be bent in all directions, and the keel region on the stent graft can provide a sufficient amount of an axial support force for the stent.

Abstract: A puncturing device and an anchoring device, the puncturing device including: a puncturing needle, an inflatable anchoring balloon, and a catheter which passes through a proximal end and distal end of the anchoring balloon, the puncturing needle being movably accommodated within the catheter; in a filled state, a central area of an end portion of the distal end of the anchoring balloon is depressed towards the proximal end to form a depressed area, and a distal end of the catheter is located within the depressed area. The anchoring device includes the anchoring balloon and the catheter. The puncturing device may improve the accuracy and success rate of puncturing, and after puncturing is complete, an expansion balloon may be transported along a guide wire to expand a puncturing opening by simply withdrawing the puncturing needle and a push rod.

Abstract: The present disclosure relates to an occluder pushing device and an occluder delivery system, wherein the pushing device includes a pushing component and a handle. The pushing component includes a pushing tube and a traction element slidably inserted into the pushing tube. The handle is fixedly connected to a proximal end of the pushing tube and internally provided with a moving component and a locking component. The moving component includes a translation mechanism and a rotation mechanism, where the translation mechanism is used to drive the traction element to move axially inside the pushing tube, and the rotation mechanism is used to drive the traction element to rotate axially inside the pushing tube. The locking component is used to lock relative positions of the traction element and the pushing tube, and the rotation mechanism includes a locking structure for locking or releasing linkage between the rotation mechanism and the traction element.

Abstract: An occlusion device includes a sealing disc, and a fixing frame connected to the sealing disc and located on one side of the sealing disc. The fixing frame includes a connecting portion connected to the sealing disc and at least one supporting body. The at least one supporting body radiates from the connecting portion and extends towards a proximal end to form a plurality of supporting sections. The supporting section is provided with at least one first restraint portion. The fixing frame is provided with at least one second restraint portion. The occlusion device further includes at least one restraint member. The restraint member is connected to the first and second restraint portion so a portion of the restraint member between the first and second restraint portion generates a restraint force that restrains movement of at least the supporting section.

Abstract: A puncturing device and an anchoring device, the puncturing device including: a puncturing needle, an inflatable anchoring balloon, and a catheter which passes through a proximal end and distal end of the anchoring balloon, the puncturing needle being movably accommodated within the catheter; in a filled state, a central area of an end portion of the distal end of the anchoring balloon is depressed towards the proximal end to form a depressed area, and a distal end of the catheter is located within the depressed area. The anchoring device includes the anchoring balloon and the catheter. The puncturing device may improve the accuracy and success rate of puncturing, and after puncturing is complete, an expansion balloon may be transported along a guide wire to expand a puncturing opening by simply withdrawing the puncturing needle and a push rod.

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: An occluder has a first disk-shaped structure with a grid, wherein the first disk-shaped structure is woven from at least two groups of braided wires, and the two groups of braided wires are crossed to form multiple rings of crossing points. A blocking membrane is also arranged in the disk-shaped structure, with an edge of the blocking membrane connected to the outermost ring of crossing points of the multiple rings of crossing points through a sewing wire, and the number of crossing points in the outermost ring of crossing points sewn with the blocking membrane is smaller than the number of all the crossing points in the outermost ring of the crossing points. The occluder can reduce the possibility of the phenomenon where the edge of the blocking membrane cannot abut against a disk face edge of the occluder, thereby improving the occlusion effect of the occluder.