LIFETECH SCIENTIFIC (SHENZHEN) CO., LTD.

A push cable ( 10 ), a push system ( 100 ), a heat treatment method, and a push cable preparation method are provided. The push cable ( 10 ) includes a first cable body ( 11 ) and a second cable body ( 12 ) connected to one end of the first cable body ( 11 ). The first cable body ( 11 ) includes one or more first metal wires. The second cable body ( 12 ) includes one or more second metal wires. The first metal wire and the second metal wire are each made of a shape memory alloy material. The elastic energy storage efficiency of the first metal wire is less than the elastic energy storage efficiency of the second metal wire. In the environment of a human body temperature, when the first cable body ( 11 ) is experiencing bending deformation from an initial form, the first cable body cannot be restored to the initial form without the assistance of an external force. The push cable reduces the probability of the first cable body ( 11 ) flicking other parts of the heart, thereby reducing the probability of damage to heart tissue.

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.

A covered stent ( 10 ), comprising a main body stent ( 11 ), a window ( 13 ) being formed on a surface of the main body stent ( 11 ). The covered stent ( 10 ) further includes an internal covering film ( 14 ). An edge of the internal covering film ( 14 ) is connected to the main body stent ( 11 ). The internal covering film ( 14 ) includes a bottom portion ( 141 ), a proximal end folding portion and a distal end folding portion, and the proximal and distal end folding portions are disposed at two ends of the bottom portion ( 141 ), respectively. At least one of the proximal end folding portion and the distal end folding portion is disposed on an inner surface of the main body stent ( 11 ), and is recessed toward an inner cavity of the main body stent ( 11 ) to form a receiving cavity, and a through hole ( 147 ) that communicates with the inner cavity of the main body stent ( 11 ) is also formed on the internal covering film ( 14 ). The internal covering film ( 14 ) of the covered stent ( 10 ) is provided with folding portions ( 142 ), and the folding portions ( 142 ) have a receiving cavity. When an implantation path of a bridging stent ( 100 ) is established, a guide wire or catheter can extend into a branch stent ( 12 ) along the receiving cavity, to thereby quickly establish the implantation path of the bridging stent ( 100 ) and shorten the operation time.

An embolic protection device includes a frame, an edge filter screen, and a plurality of supporting rods that are arranged at intervals. Each supporting rod includes a first tail end, a second tail end, and at least one head end that faces a distal end. The first tail end and the second tail end are separately connected to two opposite sides of the frame. The first tail end and the second tail end separately form a first line segment and a second line segment with the head end. The first line segment extends in a direction from the first tail end to the head end and gradually moves away from the frame, and the second line segment extends in a direction from the second tail end to the head end and gradually moves away from the frame.

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.

A delivery device ( 40 ) and a delivery system ( 100 ) are provided. The delivery device ( 40 ) includes an operating handle ( 410 ), a regulating member ( 420 ) and a first driving assembly ( 450 ), where the operating handle ( 410 ) includes an accommodating cavity; in a natural state, the regulating member ( 420 ) includes a bent section ( 422 ), and an end of the regulating member ( 420 ) that is away from the bent section ( 422 ) extends into the accommodating cavity; the first driving assembly ( 450 ) is arranged on the operating handle ( 410 ), is connected to the regulating member ( 420 ), and is configured to control an axial displacement of the regulating member ( 420 ), so that the bent section ( 422 ) of the regulating member ( 420 ) abuts against an implantable instrument to realize forming of the implantable instrument. The delivery device ( 40 ) can form the implantable instrument.

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.

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 ). 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 ), such that the decomposing portion ( 1021 ) rotating at a high speed further cuts and decomposes the cut tissue in the delivery portion ( 1012 ) into smaller tissues, so as to achieve improved decomposition of the tissue in order to facilitate the subsequent discharge of the excess tissue.

A neostomy apparatus, including a grasping device, a cutting device and a control handle. The control handle includes a housing and a manipulation portion disposed in the housing, the manipulation portion can move axially relative to the housing; the grasping device or the cutting device includes an elongated member, and the manipulation portion drives the elongated member to move axially; the elongated member is partially located in the housing, and a first limiting structure is further disposed in the housing, the first limiting structure has a groove or a through hole, and a portion of the elongated member located in the housing is at least partially disposed in the groove or the through hole of the first limiting structure.

The present invention relates to an endoluminal stent and an endoluminal stent system, with the endoluminal stent being delivered to a site at which it is to be implanted by means of a delivery device comprising a sheath for receiving the endoluminal stent. The endoluminal stent comprises a hollow tube body portion, a connection portion and a flange portion, wherein the tube body portion is connected to one end of the connection portion, the flange portion has a connection end and a suspended end opposite one another, with the connection end being connected to the other end of the connection portion in a turning connection, and the suspended end being suspended, the flange portion comprising a flange section bare wave ring made of an elastic material; the suspended end is located at a distal side of the connection end when the endoluminal stent is in a natural state; the suspended end is located at a proximal side of the connection end when the endoluminal stent is received in the sheath; and after the flange portion is released from the sheath, the flange portion automatically turns over, and the suspended end moves from the proximal side of the connection end to the distal side of the connection end. The endoluminal stent of the present invention can enhance the anchoring force thereof.