Unidirectional flap
A valve and one-way technology, applied in the field of medical devices, can solve problems such as limited gap width, many horn nodes, and damage to the inner wall of the bronchi, and achieve improved support and stability, reduced horn nodes, and reduced occurrence probability Effect
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[0057] Example 1
[0058] Such as image 3 As shown, the bronchial valve of Embodiment 1 of the present invention includes a frame 302 and an insulating film 304. The frame 302 includes a distal end 306 away from the human oral cavity, a proximal end 307 close to the human oral cavity, and a middle part connecting the proximal end 307 and the distal end 306, The middle part is composed of a plurality of longitudinal beams 301 parallel to the central axis. Both ends of each longitudinal beam 301 are bent at a certain angle and then extend to the proximal and distal ends to form a closed lantern frame 302; the longitudinal beams 301 are close to The inner surface and the outer surface of the distal end 306 are provided with groove-like membrane covering sites 303 (hereinafter referred to as the membrane covering groove); the part between the membrane covering groove 303 and the distal end 306 is covered with the insulating membrane 304. The edge 305 of the insulating film 304 exten...
Example Embodiment
[0071] Example 2
[0072] Such as Picture 8 As shown, in this embodiment, in order to enhance the adhesion of the insulating film to the frame 302, a grid 801 is set at the connection between the frame 302 and the distal end 306. When the instrument is received in the delivery system, the insulating film can be accommodated in the grid, thereby Avoiding the friction between the insulating film and the conveying system also enhances the adhesion of the insulating film on the surface of the device.
[0073] In addition, in order to strengthen the firmness of the device at the target site in the bronchus, a protruding point was added to the hole-shaped membrane site (hereinafter referred to as the membrane hole) of the longitudinal beam 301 to increase the friction between the longitudinal beam and the bronchus. This prevents the device from shifting in the bronchus. The process of making bumps is as follows: insert a nickel-titanium rod on the film hole 303, and after welding with...
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