3 results about "Stent deployment" patented technology

The present invention provides an easy-to-operate stent delivery system that allows for easy movement or fixation of the electrocautery tip in adjacent tissue layers, i.e., two adjacent lumens within the body, and allows for easy deployment of the stent to connect the holes in the two adjacent lumens formed by the electrocautery tip. [Solution] The stent delivery system according to the present invention is characterized in that a first handle for moving the electrocautery tip is moved or fixed in a fixed tube by a first locking member that operates semi-automatically, and a second handle for moving the outer tube for stent deployment is moved or fixed in a guide rod of the first handle by a second locking member that is actuated by a pulling external force.

A stent delivery device and a stent system comprising same. The stent delivery device comprises a force-functional component which is arranged at a distal end and is configured to reduce a passive force exerted axially on the distal end of the stent delivery device, wherein the force-functional component is designed to have a structure that dissipates and / or redirects the passive force, and the distance between a distal end of the force-functional component and the distal end of the whole stent delivery device is smaller than or equal to the nominal diameter of a stent delivered by the stent delivery device. By means of providing the force-functional component, the stent delivery device effectively dissipates or redirects the reactive force generated when the distal end of the delivery device touches a vascular wall during a stent implantation process, thereby significantly reducing the force exerted by the stent delivery device on the vascular wall during the stent implantation process. The setting of the distance between the distal end of the force-functional component and the distal end of the whole stent delivery device ensures a safe landing of the distal end of the stent upon initial release, thereby further reducing the possibility of vascular injury during a stent deployment process.

This invention discloses an endovascular stent for preventing branch vessel occlusion. The stent includes a proximal end, a distal end, and a mid-section. The stent is a mesh-like structure formed by weaving multiple biocompatible braided filaments with one or more high-density metal wires. The number of filaments in the proximal and distal ends is less than that in the mid-section, and the mesh size in the proximal and distal ends is larger than that in the mid-section. This endovascular stent provides sufficient support while effectively reducing the risk of branch vessel occlusion. The stent is also easier to press into a smaller diameter stent delivery tube, and the filaments at both ends are less prone to tangling during stent deployment.