摘要:
A covered stent , including a proximal end end surface , a distal end end surface and a peripheral surface located between the proximal end end surface and the distal end end surface , the peripheral surface including an inner surface and an outer surface . The outer surface is covered with a first coating membrane , and the inner surface is covered with a second coating membrane. The covered stent further includes a stent main body, which is between the first coating membrane and the second coating membrane . At least one of two ends of the first coating membrane and the second coating membrane fold inward or outward so as to wrap at least one from among the proximal end end surface and the distal end end surface.
摘要:
The present invention provides an aortic arch intraoperative stent, wherein the aortic arch intraoperative stent comprising a main body (17) and one to three branches (5, 6, 7). The aortic arch intraoperative stent connects several circular waveform rings together via a cover membrane (25) to form the main body (17) and the branches (5, 6, 7), wherein each circular waveform ring comprises a circular elastic wire formed through head-to-tail connection. In addition, the present invention also provides a manufacturing method for the aortic arch intraoperative stent, comprising the following steps of: providing a cover membrane mandrel (40); making an inner membrane; assembling circular waveform rings; making an outer membrane; suturing a proximal fabric (12); and suturing a distal fabric (13). The aortic arch intraoperative stent can automatically adapt to the vascular structure near the aortic arch of different patients, and the main body (17) in the aortic arch intraoperative stent maintains a sufficient radial support for the branches, thereby ensuring that the branches on the aortic arch intraoperative stent may safely enter branch vessels during surgery, and preventing the branches from slipping out of the corresponding branch vessels during and after surgery at the same time.
摘要:
A sheath core assembly, a method for manufacturing a sheath core assembly, and a delivery device are provided. The sheath core assembly includes a sheath core (11), and a tip (14) and a connector which are provided at a distal end of the sheath core (11). The tip (14) includes a first connecting section (141) and a guiding section (142) coaxially connected to a distal end of the first connecting section (141). The guiding section (142) is tapered and has an outer diameter gradually decreasing from a proximal end to a distal end thereof. The connector is connected between the sheath core (11) and the tip (14). A proximal end of the connector extends out from a proximal face of the tip (14), and a distal end of the connector extends towards a distal end of the tip (14) and forms an extending section (122). The extending section (122) is embedded in the guiding section (142). The extending section (122) is tapered and has an outer diameter gradually decreasing from a proximal end to a distal end thereof. The problems of difficult cleaning and breakage of a tip (4') of an existing delivery system caused by bubbling in injection molding of the tip (4') can be solved.
摘要:
A sheath core assembly (100) and a delivery system are provided. The sheath core assembly (100) includes a sheath core (10) and a U-shaped anchor (20). The U-shaped anchor (20) includes an anchor body (21) and a stent fixing rod (22). The anchor body (21) is sleeved to the sheath core (10) and relatively fixed to the sheath core (10). The anchor body (21) includes a distal face (21a) and a proximal face (21b) which are opposite to each other, and an outer peripheral face (21c) surrounded between the distal face (21a) and the proximal face (21b). The distal face (21a) is larger than the proximal face (21b), and edge profiles of the distal face (21a) and the proximal face (21b) are arc-shaped. The outer peripheral face (21c) is an arc face having a smooth transition from the distal face (21a) to the proximal face (21b). A welding groove (24) is recessed in the outer peripheral face (21c) near a proximal end of the anchor body (21). A proximal end of the stent fixing rod (22) is fixedly connected to the distal face (21a) of the anchor body (21). In the sheath core assembly, an outer periphery of the anchor body is arranged as an arc-shaped transition face, and a welding groove is recessed in the arc-shaped transition face, whereby a distal end of the anchor body is stepless, thus solving the problem of difficulty in pushing and withdrawing due to steps in a welding zone.
摘要:
A lumen stent, including a mesh support structure. The mesh support structure includes a first mesh region and a second mesh region connected to the first mesh region in a circumferential direction in a naturally deployed state. The first mesh region includes a plurality of rows of intersecting units formed by a plurality of first direction support wires spaced apart and a plurality of second direction support wires spaced apart overlapping each other. The second mesh region includes at least one row of hooking units, each row of the hooking units including a plurality of hooking units axially spaced apart, and the hooking unit including a first hooking member and a second hooking member. The first hooking member and the second hooking member are mutually hooked substantially in an axial direction. The lumen stent is less prone to shortening during release and has superior flexibility.
摘要:
A conveyor and a lumen apparatus conveying 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.
摘要:
The present invention relates to a delivery system (100), including an outer sheath assembly (1), an inner sheath assembly (3), and a sealing assembly (5), where the outer sheath assembly (1) includes an outer sheath core tube (11); the inner sheath assembly (3) includes an inner sheath core (31) arranged in the outer sheath core tube (11) in a penetrating manner; the sealing assembly (5) includes a first sealing piece (51); and the first sealing piece (51) is arranged between the inner sheath core (31) and the outer sheath core tube (11) to seal a gap between a proximal end of the outer sheath core tube (11) and the inner sheath core (31). The delivery system can effectively block blood flowing into a gap between the outer sheath core tube (11) and the inner sheath core (31), so that the blood is avoided from flowing out of a product, thereby solving the technical problem of blood leakage of the product.
摘要:
A lumen stent (100) includes a tubular stent and an imaging marker; the tubular stent includes a main body stent (11); the imaging marker includes a first marker (211) provided on the main body stent (11); and the shape of the first marker (211) provided on the main body stent (11) is asymmetrical at least along a longitudinal axis. A non-axisymmetric imaging marker is provided on the main body stent (11), and the position and orientation of the lumen stent (100) implanted in the body can be accurately and clearly displayed through the imaging marker, to allow the operator to observe and quickly judge and timely adjust, thereby shortening the operation time of the endovascular treatment and reducing the difficulty of the operation.
摘要:
A lumen stent (100) and an implant are provided. The lumen stent includes a tubular body (11), an inner branch (12) and an outer branch (13) which are respectively communicated with the tubular body (11). The tubular body (11) includes a first body segment (111), a tapered segment (112) and a second body segment (113) which are connected in sequence. The tapered segment (112) is provided with an outer branch window (110b) and an inner branch window (110a). The proximal end of the outer branch (13) is connected to the outer branch window (1 10b). The distal end of the inner branch (12) is connected to the inner branch window (110a). The area of the inner branch window (110a) is larger than that of the outer branch window (1 10b). The beneficial effects are as follows: since the area of the inner branch window (1 10a) is larger than that of the outer branch window (1 10b), most of blood flow can rapidly pass through the inner branch (12), so that the blood flow pressure of the outer branch (13) is reduced, and the distal end of the outer branch (13) is prevented from tilting and touching an inner wall of a tumor cavity.
摘要:
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. Also provided is a stent system including the luminal stent. The stent system and the luminal stent can prevent type III endoleaks.