Vascular sheath loaded with coating

The utility model relates to a blood vessel sheath loaded with a coating, which comprises a blood vessel sheath body (1), a stress diffusion tube (2), a one-way valve body (3), a side branch tube (4) and a three-way valve (5), a plurality of salient points (6) are arranged on the surface of the inner wall of the blood vessel sheath body (1), and an anticoagulant drug coating (7) is loaded on the surface of the inner wall of the blood vessel sheath body (1) at a gully formed by the plurality of salient points (6). Due to the design of the multiple convex points (6) on the inner wall of the blood vessel sheath tube, the contact area between the blood vessel sheath tube and a conveying catheter is reduced, the friction coefficient is reduced, the conveying efficiency is improved, meanwhile, the gullies among the convex points on the inner wall are used for filling anticoagulant drugs, the drug loss is small, and adhesion between the sheath and the conveying catheter due to the blood coagulation problem caused by