Abstract: The disclosure discloses a method for service processing and system, including: determining a first quantity parameter for acquiring shards each time and a second quantity parameter of objects acquired by each of the shards each time; assigning first weight to the first quantity parameter to obtain third quantity parameter for acquiring the shards; listing, from a plurality of shards at a bottom layer, shards corresponding to the third quantity parameter, and listing, from each of the shards which is listed, the objects corresponding to the second quantity parameter, so as to obtain a matrix, wherein the matrix takes each of the shards which is listed as a column and a plurality of objects corresponding to each shard as rows; successively extracting the plurality of the objects corresponding to each row of the matrix; and according to preset number of concurrent processing, processing the plurality of the objects extracted each time.

Abstract: A delivery sheath and a medical device. The delivery sheath includes an outer canal and a traction structure. The outer canal includes a connecting canal, a canal body, and a distal canal. The canal body is located between the connecting canal and the distal canal. The canal body includes a first flexible canal, a spacer canal, and a second flexible canal. The spacer canal is provided between a distal end of the first flexible canal and a proximal end of the second flexible canal. The hardness of the connecting canal is greater than that of the first and second flexible canals, and the hardness of the spacer canal is greater than that of the first and second flexible canals. The traction structure includes a first traction fiber and a second traction fiber.