Abstract: The present disclosure provides an image registration method and system for navigation in femoral neck fracture surgery, an electronic device, and a computer-readable storage medium. The method includes: obtaining femoral image data by a computed tomography (CT) imaging device before surgery and obtaining a surgical path planned by a doctor to generate a three-dimensional femoral image with the surgical path; obtaining, during the surgery, X-ray images photographed by an X-ray machine at different angles, and extracting feature points on each of the X-ray images; setting digitally reconstructured radiograph (DRR) virtual scene projection parameters based on a structure of the X-ray machine, projecting the three-dimensional femoral image with the surgical path to generate a plurality of DRR images, and extracting feature points on each of the DRR images; and automatically registering the DRR image and the X-ray image, and outputting a surgical path after registration.

Abstract: Disclosed is an in-vivo micro-robot for nerve stretching, comprising a channel, and a movable part and a fixed part located at the channel. The movable part is disposed to be movable along the channel, the movable part sleeves the fixed part and is used for driving the fixed part to move along the channel, and the fixed part is connected to a nerve to be stretched. The in-vivo micro-robot is embedded into a patient's body through surgery, so that the extension of the nerve is accelerated and is regular and quantitative, thereby effectively solving the problems of small probability of nerve self-repair and long recovery period in traditional nerve bridging surgery.

Abstract: The invention provides a reduction and fixation device for fracture correction, and relates to the technical field of orthopedic medical devices. The reduction and fixation device for fracture correction comprises: an aiming frame body including a fixation plate, a first rectangular frame, a support plate and a second rectangular frame, wherein two first sliding frames are slidingly arranged in the first rectangular frame, a first screw sleeve is arranged in the first sliding frame, upper and lower sides of the first screw sleeve are rotationally connected to an inner wall of the first sliding frame through a first rotating shaft, a second sliding frame is slidingly arranged in the second rectangular frame, a second screw sleeve is arranged in the second sliding frame, and front and rear sides of the second screw sleeve are rotationally connected to an inner wall of the second sliding frame through a second rotating shaft.

Abstract: Provided are a grasping instrument, tracking and navigation system, method and display apparatus for bone structure reduction, and a storage medium. The grasping instrument includes a straight strip-shaped support rod, and a grasping end and a signal end that are arranged at two ends of the support rod; a plurality of grating sensors extending in an axial direction are arranged on the support rod; the signal end is provided with an instrument pose feedback sensor for feeding back pose information of the grasping instrument; and the plurality of grating sensors are configured to detect deformation data of the support rod under an action of resistance at the grasping end. The tracking and navigation system includes an electromagnetic signal transceiving apparatus, the grasping instrument, an ultrasonic detection apparatus, and a navigation display apparatus.

Abstract: A spatial series-parallel pelvic fracture reduction robot includes a base support, a mobile platform module, an arc-shaped guide rail platform module, a robot module, and a pelvic external fixator which are connected in sequence. The mobile platform module is fixedly connected on an upper part of the base support and is used for driving the arc-shaped guide rail platform module to linearly translate up and down and left and right; a connecting sliding block of the arc-shaped guide rail platform module is connected to the robot module and used for enabling the robot module to move along an arc-shaped guide rail; the robot module includes a robot and a clamping mechanism, the robot is used for adjusting a spatial pose of the clamping mechanism, and the clamping mechanism is used for fixing bone needles; the pelvic external fixator is used for firmly fixing the pelvis.

Abstract: A spatial series-parallel pelvic fracture reduction robot includes a base support, a mobile platform module, an arc-shaped guide rail platform module, a robot module, and a pelvic external fixator which are connected in sequence. The mobile platform module is fixedly connected on an upper part of the base support and is used for driving the arc-shaped guide rail platform module to linearly translate up and down and left and right; a connecting sliding block of the arc-shaped guide rail platform module is connected to the robot module and used for enabling the robot module to move along an arc-shaped guide rail; the robot module includes a robot and a clamping mechanism, the robot is used for adjusting a spatial pose of the clamping mechanism, and the clamping mechanism is used for fixing bone needles; the pelvic external fixator is used for firmly fixing the pelvis.

Abstract: A swirl-type demulsification and dehydration device for oil-water emulsions, including a swirler. An open end of a swirl chamber of the swirler faces towards an underflow pipe and communicates with the underflow pipe through a composite curved pipe section coaxial with the swirl chamber. A large-diameter end of a concave arc transition section is connected to the open end of the swirl chamber, is the same with the swirl chamber in inner diameter. A large-diameter end of a straight cone transition section is tangent to a small-diameter end of the concave arc transition section. A small-diameter end of the straight cone transition section is tangent to a large-diameter end of a convex elliptical arc transition section. A small-diameter end of the convex elliptical arc transition section is connected to the underflow pipe.

Abstract: Disclosed is an in-vivo micro-robot for nerve stretching, comprising a channel, and a movable part and a fixed part located at the channel. The movable part is disposed to be movable along the channel, the movable part sleeves the fixed part and is used for driving the fixed part to move along the channel, and the fixed part is connected to a nerve to be stretched. The in-vivo micro-robot is embedded into a patient's body through surgery, so that the extension of the nerve is accelerated and is regular and quantitative, thereby effectively solving the problems of small probability of nerve self-repair and long recovery period in traditional nerve bridging surgery.

Abstract: A demulsification-dehydration method by using a chaotic-frequency pulse group electric field, including: subjecting a waste oil emulsion to the chaotic-frequency pulse group electric field for demulsification and dehydration. The chaotic-frequency pulse group electric field includes a plurality of pulse electric field groups varying in pulse frequency. The pulse frequency of each pulse electric field group varies chaotically within a preset range. Each pulse electric field group includes a plurality of pulses of equal frequency, duty cycle and electric field intensity.

Abstract: Provided are SNP markers of drug reduced susceptibility related evolutionary branches of Clostridium difficile, a method for identifying the category of a Clostridium difficile strain, and use thereof. The SNP markers are specific markers of three categories of the Clostridium difficile clade2 (mainly hypervirulent ribotype 027), allowing for rapid and accurate identification of the evolutionary branches of Clostridium difficile strains that are resistant to a variety of therapeutic drugs and related drugs. Accurate categorization of the drug reduced susceptibility related evolutionary branches not only provides evidence for the evolutionary traceability of drug-resistant pathogens, but also offers effective and actionable guidance on clinical drug usage.

Abstract: A double-field coupling dehydrator and an optimization method for parameters. Parameters to be optimized is determined. Simulations to the double-field coupling dehydrator is carried out according to the parameters to be optimized, individually. Optimal ranges of the parameters to be optimized are determined according to simulation results. Optimized parameter combinations of the parameters to be optimized are determined separately. Separation efficiencies of the double-field coupling dehydrator under different optimized parameter combinations are obtained to determine an optimal parameter combination. The method considers both influences of single parameters and interactions between the parameters on the separation efficiency. Based on numerical simulation results of the double-field coupling dehydrator, these influences are analyzed by a software Design-Expert to obtain an optimal parameter combination.

Abstract: A double-field coupling dehydrator and an optimization method for parameters. Parameters to be optimized is determined. Simulations to the double-field coupling dehydrator is carried out according to the parameters to be optimized, individually. Optimal ranges of the parameters to be optimized are determined according to simulation results. Optimized parameter combinations of the parameters to be optimized are determined separately. Separation efficiencies of the double-field coupling dehydrator under different optimized parameter combinations are obtained to determine an optimal parameter combination. The method considers both influences of single parameters and interactions between the parameters on the separation efficiency. Based on numerical simulation results of the double-field coupling dehydrator, these influences are analyzed by a software Design-Expert to obtain an optimal parameter combination.

Abstract: Disclosed is a liquid-liquid-solid three-phase separator for waste oil, including an oil-bath heating tank, a plurality of cyclone units and solid removal units. The cyclone units are provided and fixed in the oil-bath heating tank. Each of the solid removal units is connected to an underflow pipe of each of the cyclone units and is configured to separate solid particles. A solid removal outer pipe is arranged at a tail end of the underflow pipe via the first connector; the second connector is arranged at a tail end of the solid removal outer pipe; the solid removal inner pipe is arranged at an underflow outlet of the underflow pipe via the second connector to form a solid removal gap. The invention provides the demulsification and dehydration treatment of waste oil emulsion and the separation of solid particles.

Abstract: Disclosed is a liquid-liquid-solid three-phase separator for waste oil, including an oil-bath heating tank, a plurality of cyclone units and solid removal units. The cyclone units are provided and fixed in the oil-bath heating tank. Each of the solid removal units is connected to an underflow pipe of each of the cyclone units and is configured to separate solid particles. A solid removal outer pipe is arranged at a tail end of the underflow pipe via the first connector; the second connector is arranged at a tail end of the solid removal outer pipe; the solid removal inner pipe is arranged at an underflow outlet of the underflow pipe via the second connector to form a solid removal gap. The invention provides the demulsification and dehydration treatment of waste oil emulsion and the separation of solid particles.

Abstract: The invention discloses a double-field coupling dehydrator and an optimization method for parameters thereof. The optimization method includes: determining parameters to be optimized; carrying out simulations to the double-field coupling dehydrator according to the parameters to be optimized, separately; determining optimal ranges of the parameters to be optimized according to simulation results; determining optimized parameter combinations of the parameters to be optimized, separately; carrying out simulations to the double-field coupling dehydrator according to the optimized parameter combinations, separately; obtaining separation efficiencies of the double-field coupling dehydrator under different optimized parameter combinations; and determining an optimal parameter combination according to the separation efficiencies of the double-field coupling dehydrator. The method considers both influences of single parameters and interactions between the parameters on the separation efficiency.

Abstract: The embodiments herein describe a computing device (e.g., a storage server) that includes at least one telescoping unit which includes a plurality of removable (or pluggable) hardware components. The computing device includes a chassis which defines a form factor of the computing device. The telescoping unit, when prompted by the user, can extend vertically from a top surface of the computing device. By doing so, the pluggable hardware components are then exposed to the user who can add or replace the components. In one embodiment, the telescoping unit includes telescoping links disposed on opposite sides which are used to guide or urge the telescoping unit vertically from the chassis. Cross links may be coupled between first and second rails where one end of each of the links is coupled to a sliding member in the rail while the other end is fixably attached to the rail.

Abstract: A method for inducing continuous separation of copper ions from copper using UV-light source, comprising the following steps: (1) cutting apiece of copper into wires or slices for immersing into a vessel containing water; switching on a stirrer for stirring the water continuously and keeping the copper being immersed in the water; (2) turning on the UV-light source for irradiating the copper and the water continuously; appearing a large amount of white precipitate in the water; (3) filtering the solution; detecting the filtered solution, a certain concentration copper ions in the filtered solution are found; adding hydrochloric acid by drops into the unfiltered original solution, the white precipitate is dissolved and copper ions are detected. The invention makes the copper separate out copper ions continuously and can be applied to copper ion disinfection for swimming-pool water, scenic water and cooling water, etc.