摘要:
An interventional medical device connector and a method for using same. The interventional medical device connector comprises an implant (1) and a pusher (5). One end of the implant (1) is provided with at least one lock ring (9). The top end of the pusher (5) is provided with at least one locking hole (7). The pusher (5) is provided with at least one control wire (4). The control wire (4) slides along the axial direction of the pusher (5), and the top end of the control wire (4) can reach at least one of the locking holes (7). The control wire (4), the lock ring (9) and the locking hole (7) together form a connection means having a lock-pin structure. Use of this means of connection effectively overcomes the defects of existing threaded connections, reduces risks, and provides convenience of use.
摘要:
Disclosed is an absorbable occluder (100) comprising a web (110), and the web (110) comprises at least two polymeric filaments having different degradation periods of concentration, or comprises a polymeric filament prepared by blending at least two polymers having different degradation periods of concentration. The absorbable occluder (100) can avoid a serious tissue inflammation reaction caused by a concentrated degradation of the polymeric filaments forming the web (110) during the same time period.
摘要:
An occlusion device comprises a distal end, a proximal end and an elastic braided body which is provided between the proximal end and the distal end and made of wires. The elastic boy is composed of a multi-stage braided net, which comprises at least a first-stage braided net that is closest to the distal end and made of a plurality of first-stage wires, and a second-stage braided net which is braided by a plurality of first-stage wires and second-stage wires all together. The minimum cross-section area of the first-stage braided net after being compressed toward the direction perpendicular to an axis of the elastic braided body is less than the minimum cross-section area of any other-stage braided net after being compressed toward the axis. A method of manufacturing the occlusion device is also provided.
摘要:
The present invention relates to an implant conveying device, comprising a pusher (20), a control component (21), a connecting wire (11) and a control wire (4). The pusher (20), of which one end is connected to the control component (21), is provided with a tube cavity (6) and a lock hole (7) communicated with the tube cavity. One end of the control wire (4) is connected to the control component (21), and the other end thereof is driven by the control component to be movably accommodated in the tube cavity (6) of the pusher. One end of the connecting wire (11) is connected to the pusher (20) or to the control component (21), and the other end thereof is used for passing through an implant (1) and then entering the lock hole (7). The control wire (4) is driven by the control component (21) to pass through the connecting wire (11) to connect the implant (1) and the conveying device, or the control wire (4) is driven by the control component (21) to be disengaged from the connecting wire (11) to release the implant (1). By means of the conveying device, locking rings on instruments are removed, so that no redundant metal remains after the implant is implanted into the human body.
摘要:
Disclosed is a medical instrument coating, being coated on the surface of a nickel-titanium alloy component of a medical instrument. The medical instrument coating comprises an elementary copper phase, an amorphous titanium-containing substance and a transition layer comprising a copper-nickel intermetallic phase. Also mentioned is a preparation method for the medical instrument coating. A medical instrument comprising a copper-titanium coating has good blood compatibility, and simultaneously can inhibit the endothelialization of the medical instrument surface, thereby improving the recovery rate of the medical instrument and prolonging the recovery time window; the copper-titanium coating belongs to the group of metal composite coatings, has a certain toughness and ductility, and avoids the large-amplitude deformation process of the medical instrument damaging the coating; and the mechanical property and the coating quality of the medical instrument comprising a fine nickel-titanium alloy component are guaranteed by the method for preparing the coating.
摘要:
A left atrial appendage occluder (100) comprises an elastic closure disc (11) connected to a fixing structure (111) which is located on one side of the closure disc. The fixing structure (111) comprises a central end portion connecting with the closure disc and a plurality of interconnected and curved struts (121), wherein at least one anchoring tip (131) is provided near the end of at least one strut (121) with the anchoring tip (131) directed toward the closure disc (11). 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 deployment device. 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.
摘要:
An occlusion device has a right disc made from a metal mesh having a plurality of openings, and a left disc having at least two skeletons that are covered by a membrane. Each skeleton passes through openings of the metal mesh to interlock the right and left discs, and a coil is wrapped around each opposing end segment of the skeletons. The skeletons can have a looped section where the skeleton is twisted or looped to cross or overlap itself. In addition, each skeleton can be formed from a braided strand of a plurality of wires.
摘要:
An occlusion device has a right disc made from a metal mesh having a plurality of openings, and a left disc having at least two skeletons that are covered by a membrane. Each skeleton passes through openings of the metal mesh to interlock the right and left discs, and a coil is wrapped around each opposing end segment of the skeletons. The skeletons can have a looped section where the skeleton is twisted or looped to cross or overlap itself. In addition, each skeleton can be formed from a braided strand of a plurality of wires.
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.