Abstract: According to one aspect of the present disclosure, ureteral stents are provided that comprise an elongated stent body, at least one deployable retention structure, and at least one sleeve and/or sheet of drug-releasing material. In various embodiments, at least one sleeve and/or sheet of drug-releasing material is deployed concurrently with the deployment of at least one deployable retention structure. The ureteral stents of the present disclosure are adapted to release the urologically beneficial drug into a subject.

Abstract: A method for preparing a carbon powder from an organic polymer material and a method for detecting the crystal morphology in the organic polymer material. A method for preparing a carbon material product comprises a carbonization step in which: a straight-chain polymer material containing nanoscale crystals is carbonized by using a strong oxidizing agent free of heavy metal ions, thus acquiring a nanoscale carbon material. Also disclosed is a method for acquiring either a material having a carbonized surface or a powder material containing graphene by using an acid in treating the organic polymer material.

Abstract: The present invention relates to a method for preparing a sulfonated graphene from an organic material and to the sulfonated graphene prepared therefrom. The method comprises the following steps: a first contact step: a reaction medium containing oxidative sulfonating agent is allowed to come into contact with the organic macromolecular material at a first temperature; and, a second contact step: when the first contact step is completed, in same reaction medium, the reaction temperature is increased to a second temperature to allow for continued reaction, thus producing the sulfonated graphene.

Abstract: An aortic bare stent and an aortic dissection stent are disclosed. The aortic bare stent is in a tubular net structure, with multiple support stents in circles and arranged along an axial direction. Two adjacent support stents are connected by a connector stent. The connector stent is made of a hyper-elastic material. A flexural rigidity of the connector stent is less than that of the support stent. The support stent is made of a single-strand hyper-elastic nickel titanium wire or formed by cutting a nickel titanium tubing. The connector stent is made of a multi-strand composite wire. The multi-strand composite wire is formed by twisting or weaving multiple strands of filaments, and each strand of filament is independently of a nickel titanium material.

Abstract: A plastic covered stent for aortic dissection and an aortic dissection stent are disclosed. The plastic covered stent for aortic dissection includes a tubular membrane and multiple annular stents sequentially sutured on the membrane along an axial direction. Part of the annular stents on the membrane are semi-suture stents. Each semi-suture stent has non-suture zones separable from the membrane. When the plastic covered stent is bent, the membrane corresponding to the non-suture zones at an inner bending side of the plastic covered stent is separated from the semi-suture stents and folded inwardly. The semi-suture stents are distributed on a bending portion of the plastic covered stent for aortic dissection after being implanted.

Abstract: Devices to improve lung function in a patient having restricted ventilation. The device may include an entry or access port for an implantable airway bypass device that relieves trapped air. The device of the present invention comprises an expandable structure (164) to be implanted in lung tissue and defining an air capture chamber, a first conduit (174) having a first end from which extends the expandable structure, and a second end to be coupled to a first end of a second conduit (161), the second end of the second conduit being joined to an external anchor (175) to rest against an outer skin surface of the chest of the patient.

Abstract: A method and device for reconstructing a CT image and a storage medium are disclosed. CT scanning is performed on an object to be inspected to obtain projection data on a first scale. Projection data on a plurality of other scales is generated from the projection data on the first scale. Projection data on each scale is processed on the corresponding scale by using a first convolutional neural network to obtain processed projection data, and a back-projection operation is performed on the processed projection data to obtain a CT image on the corresponding scale. CT images on the plurality of scales are fused to obtain a reconstructed image of the object to be inspected.

Abstract: A method and device for reconstructing a CT image and a storage medium are disclosed. CT scanning is performed on an object to be inspected to obtain projection data. The projection data is processed using a first convolutional neural network to obtain processed projection data. The first convolutional neural network comprises a plurality of convolutional layers. A back-projection operation is performed on the processed projection data to obtain a reconstructed image.

Abstract: An improved approach is described to implement trim data representation for an electronic design. Instead of maintaining a gap shape object for every gap in the layout, existing objects adjacent to the gap location are configured to include attributes of the gap shape. The properties of the gap shape can then be derived from the adjacent objects.

Abstract: A method for inspecting a vehicle includes acquiring a unique identity number of an insepected vehicle, carrying out X-ray scanning on the inspected vehicle to acquire an X-ray image of the inspected vehicle, retrieving at least one historical inspected image related to the unique identity number from a historical inspection database, determining, based on one template image selection algorithm selected from multiple template image selection algorithms, one of the at least one historical inspected images as a template image, determining a difference region between the X-ray image and the template image, and presenting the difference region to a user.

Abstract: In one embodiment, a medical device includes an elongate member and a tissue anchor. The elongate member defines a lumen. The elongate member has a retention member disposed within the lumen. The tissue anchor has a first arm portion, a second arm portion, and a base portion extending between the first arm portion and the second arm portion. The tissue anchor has a first configuration and a second configuration. The first arm portion is substantially linear when the tissue anchor is in its first configuration and the first arm portion is non-linear when the tissue anchor is in its second configuration. The tissue anchor is biased to its second configuration. The tissue anchor is configured to be disposed within the lumen defined by the elongate member such that the retention member engages the tissue anchor to help retain the tissue anchor in its first configuration.

Abstract: A steerable medical device is used to controllably introduce a guidewire or other medical instrument into a body of a patient and direct placement of the guidewire or other medical instrument in the body of the patient. The steerable medical device can include an elongated member, a steering mechanism, and an attachment member. The elongated member extends along a longitudinal axis and comprises a deflectable distal portion that is deflectable off of the longitudinal axis. The steering mechanism is adapted to control longitudinal and rotational movement of the elongated member and to control off-axis deflection of its deflectable portion. The attachment member is removably couplable to another medical device. The attachment member is moveably coupled to the steering mechanism and the elongated member.

Abstract: A device may include a handle, and a sheath coupled to the handle. The sheath may include a lumen. The device may also include an instrument assembly coupled to the handle, and extending through the lumen of the sheath. The instrument assembly may include a basket configured to move relative to the sheath, and between contracted and expanded states. The instrument assembly may also include a forceps configured to reciprocate along a central longitudinal axis of the basket and through an interior of the basket, and move between contracted and expanded states.

Abstract: Foldable tubular construct/element with one rigid degree of freedom is of a tubular construction formed by a number of single layered annular units which are connected in sequence; each single layered annular unit is of a prism having N ridge lines; two adjacent prisms each having N sides are connected to each other by sharing a polygon with N sides formed on an intersection plane; each prism with N ridge lines is composed of N rigid planar quadrilateral facets; two adjacent single layered annular units comprise N spherical mechanisms formed by the intersections of only four planar quadrilateral facets at each apex, where N is a number greater than 3.

Abstract: The present disclosure provides a system and method for inspecting an aircraft. An X-ray/Gamma ray radiation source and a detector are located at above and below a fuselage of an aircraft, respectively. The X-ray/Gamma ray radiation source emits a beam of radiation[ ], wherein the X-ray/Gamma ray radiation[ ] passes through the aircraft to be inspected. The detector receives and converts the beam of X-ray/Gamma ray radiation[ ] that has passed through the aircraft to an output signal, and the system generates a vertical transmission image in real time.

Abstract: A mobile inspection system comprises: a stand; a ray source mounted to the stand and configured to generate a ray; a substantially inverted L-shaped detector beam comprising a horizontal detector beam portion and an upright detector beam portion connected to one end of the horizontal detector beam portion; a plurality of detectors configured to receive the ray emitted from the ray source, the plurality of detectors being disposed to at least one of the horizontal detector beam portion and the upright detector beam portion; and a drive device disposed to the stand, connected with the other end of the horizontal detector beam portion, and configured to drive the detector beam to rotate around an upright axis, wherein the ray source and the detector beam rotate synchronously.

Abstract: The present invention discloses a vehicle inspection system, comprising: an inspection passage; a vehicle dragging system arranged in the inspection passage, wherein the vehicle dragging system comprises a first dragging means and a second dragging means, which are sequentially arranged along a vehicle dragging direction, and in the vehicle dragging direction, the first dragging means is arranged at the upstream of the second dragging means, and a separating section is arranged between the first dragging means and the second dragging means, so that the first dragging means and the second dragging means are separated by a preset distance in the vehicle dragging direction; and a radiographic inspection system, wherein at least a part of paths of the beams of the radiographic inspection system passes through the separating section between the first dragging means and the second dragging means.

Abstract: A vehicle inspection system is described. The vehicle inspection system comprises: an inspection device, for performing an inspection on a vehicle to be inspected; a carrier platform, for carrying the vehicle to be inspected; and an unmanned controlled travelling device for moving the carrier platform to pass through a scanning area of the inspection device, so as to perform the inspection on the vehicle to be inspected. In the present disclosure, the vehicle to be inspected is carried by the carrier platform, and the unmanned controlled travelling device is used to move the carrier platform to pass through the scanning area of the inspection device, so that the vehicle to be inspected can be subject to inspection smoothly. There is no driver required to drive through the scanning area in this process, thus avoiding exposure of a driver to a threat of radiation.

Abstract: A vehicle inspection method is disclosed, comprising steps of: implementing a ray scanning inspection on an inspected vehicle, so as to obtain a ray scanning inspection image of the inspected vehicle; extracting vehicle characteristic information; comparing the vehicle characteristic information of the inspected vehicle to vehicle reference characteristics stored in a database, selecting a closest vehicle reference characteristic which is closest to the vehicle characteristic information, and finding out a closest ray transmission reference image on the basis of a corresponding relationship between the vehicle reference characteristics and ray transmission reference images stored in the storage unit; determining a first distinguishing area of the ray scanning inspection image from the closest ray transmission reference image by comparing the ray scanning inspection image of the inspected vehicle to the closest ray transmission reference image. A vehicle inspection system is also disclosed.

Abstract: A ray inspection system used to be mounted in a container yard to inspect an object within a container is provided. The ray inspection system includes: a ray generator device configured to emit a ray, a ray receiving device configured to receive the ray, and at least one chamber for receiving the ray generator device and the ray receiving device therein. Each of the at least one chamber is configured to be a standard container or a chamber which has a same shape, a same size and a same structure as a standard container such that the ray inspection system is adapted to be stacked in the container yard.