Abstract: An augmented reality (AR)-assisted enhanced fracture reduction fixator includes a bidirectional telescopic rod and two connecting columns, a ball groove is provided in a middle part of each of the two connecting columns, a ball is rotatably connected to an inner wall of each of the two ball grooves, and the two balls are fixedly connected to a telescopic end of the bidirectional telescopic rod. A rectangular slider is slid to a suitable needle insertion position and angle, and a bone nail is inserted into proximal and distal ends of a fracture. Then, the rectangular slider is fixed by screwing. Based on different fracture sites of a patient, two fixing frame bodies need to adapt to the fracture sites of the patient, that is, an angle between the two fixing frame bodies will change. The ball rotates in the corresponding ball groove.

Abstract: An occlusion device includes a braided mesh body and at least one pinch member. The braided mesh body comprises plural strands each having a first end portion and a second end portion. The plural strands fold over to bring the second end portions of the plural strands adjacent to the first end portions of the plural strands forming a double-layer of the braided mesh body. In an example occlusion device, at least one of the plural strands is radiopaque, and the at least one pinch member is non-radiopaque.

Abstract: The invention relates to a method of determining a structure of ribonucleic acid (RNA) molecules, the method comprising: contacting the RNA molecules with a modifying agent to obtain modified RNA molecules; reverse transcribing the modified RNA molecules; sequencing the product obtained from the preceding step to generate sequencing reads; and analysing the sequencing reads to determine the structure of the RNA molecules. In a preferred embodiment, the RNA molecules consist of RNA molecules of a single cell, and the modifying agent is 2-methylnicotinic acid imidazolide-azide (NAI-N3). There is also provided a method of classifying cells into one or more cell populations, the method comprising: determining the structure of RNA molecules in each cell; and classifying the cells into one or more cell populations based on similarity in the structure of their RNA molecules.

Abstract: A vaso-occlusive device includes an inner braided member having an unconstrained deployed configuration and a constrained delivery configuration. The inner braided member includes a first plurality of filaments made of a first material composition, where a pair of filaments of the first plurality defines a first braid angle when the inner braided member is in the deployed configuration. The device also includes an outer braided member disposed at least partially around the inner braided member, and having an unconstrained deployed configuration and a constrained delivery configuration. The outer braided member includes a second plurality of filaments made of a second material composition different from the first material, where the first material has a greater radiopacity than the second material. A pair of filaments of the second plurality defines a second braid angle, substantially equal to the first braid angle, when the outer braided member is in the deployed configuration.

Abstract: A vaso-occlusive device includes an inner braided member having an unconstrained deployed configuration and a constrained delivery configuration. The inner braided member includes a first plurality of filaments made of a first material composition, where a pair of filaments of the first plurality defines a first braid angle when the inner braided member is in the deployed configuration. The device also includes an outer braided member disposed at least partially around the inner braided member, and having an unconstrained deployed configuration and a constrained delivery configuration. The outer braided member includes a second plurality of filaments made of a second material composition different from the first material, where the first material has a greater radiopacity than the second material. A pair of filaments of the second plurality defines a second braid angle, substantially equal to the first braid angle, when the outer braided member is in the deployed configuration.

Abstract: An embolectomy device includes a clot engaging structure comprising a plurality of interconnected struts forming an open cell structure having an inner lumen, wherein the clot engaging structure is biased to expand or otherwise expandable from a radially constrained configuration to a radially expanded configuration when released from a delivery catheter into a blood vessel; and a support structure positioned within the inner lumen of the clot engaging structure, the support structure comprising a plurality of connectors connected to respective struts of the clot engaging structure, wherein the support structure connectors are biased to move or otherwise movable from a radially constrained configuration to a radially expanded configuration to thereby cause or otherwise assist and/or facilitate and maintain expansion of the open cell clot engaging structure.

Abstract: A transportation main roadway and stope branch roadways are arranged by adopting a wangeviry coal mining method. A plurality of stope branch roadways are divided into multiple mining stages, based on which the stope branch roadways are skip-mined; and coal pillars are not reserved among the stope branch roadways. The transportation main roadway is a main transportation channel, and the stope branch roadways are coal mining roadways. All the stope branch roadways are sequentially stoped in a skip-mining manner according to the designed mining sequence and are sequentially and timely filled. The coal never stoped or the filled stope branch roadways is/are used as supports for controlling roofs at the two sides of the stope branch roadways, and the stope branch roadways are sequentially stoped according to a plurality of mining stages, and finally the coal pillar-free mining is realized.

Abstract: An embolectomy device includes a clot engaging structure comprising a plurality of interconnected struts forming an open cell structure having an inner lumen, wherein the clot engaging structure is biased to expand or otherwise expandable from a radially constrained configuration to a radially expanded configuration when released from a delivery catheter into a blood vessel; and a support structure positioned within the inner lumen of the clot engaging structure, the support structure comprising a plurality of connectors connected to respective struts of the clot engaging structure, wherein the support structure connectors are biased to move or otherwise movable from a radially constrained configuration to a radially expanded configuration to thereby cause or otherwise assist and/or facilitate and maintain expansion of the open cell clot engaging structure.

Abstract: A transportation main roadway and stope branch roadways are arranged by adopting a wangeviry coal mining method. A plurality of stope branch roadways are divided into multiple mining stages, based on which the stope branch roadways are skip-mined; and coal pillars are not reserved among the stope branch roadways. The transportation main roadway is a main transportation channel, and the stope branch roadways are coal mining roadways. All the stope branch roadways are sequentially stoped in a skip-mining manner according to the designed mining sequence and are sequentially and timely filled. The coal never stoped or the filled stope branch roadways is/are used as supports for controlling roofs at the two sides of the stope branch roadways, and the stope branch roadways are sequentially stoped according to a plurality of mining stages, and finally the coal pillar-free mining is realized.