Abstract: The present teaching relates to determination of an optimal set of supplying vessel branches for delivering radioactive material to a target region. A centerline representation for blood vessels is obtained based on a 3D image capturing an organ with a target region and a non-target region. Supplying centerline segments, each representing a supplying vessel branch, are identified based on connected supplying centerline points that cover some parts of the target region. An optimal set of supplying vessel branches are selected that satisfy a specified coverage to the target region with a least coverage to the non-target region.

Abstract: A power head of a directional drill includes a main motor, gearbox, main shaft, active drill pipe, and water swivel. The gearbox has a driving shaft connected to the main motor and engaged with the main shaft via a gear. One end of the main shaft is fixedly connected to the active drill pipe, while the other end of the driving shaft links to an angle adjuster through the gearbox, enabling efficient toolface adjustment and braking of the main motor. The water swivel mandrel connects to the active drill pipe via a connecting shaft with an axial floating structure. A connecting sleeve near the water swivel forms a hexagonal sleeve sliding pair with the connecting shaft, preventing axial impacts on mandrel support bearings during drilling. This design enhances the service life of the bearings and reduces equipment repairs, improving the reliability and efficiency of the drilling process.

Abstract: A power head of a directional drill includes a main motor, gearbox, main shaft, active drill pipe, and water swivel. The gearbox has a driving shaft connected to the main motor and engaged with the main shaft via a gear. One end of the main shaft is fixedly connected to the active drill pipe, while the other end of the driving shaft links to an angle adjuster through the gearbox, enabling efficient toolface adjustment and braking of the main motor. The water swivel mandrel connects to the active drill pipe via a connecting shaft with an axial floating structure. A connecting sleeve near the water swivel forms a hexagonal sleeve sliding pair with the connecting shaft, preventing axial impacts on mandrel support bearings during drilling. This design enhances the service life of the bearings and reduces equipment repairs, improving the reliability and efficiency of the drilling process.

Abstract: The present invention belongs to the technical field of coal mine drills, and relates to a coal mine automatic directional drill, comprising a moving platform, a machine frame, a clamper, a main manipulator, a power head, a drill pipe storage system, a control system and a hydraulic system. In the present invention, a structure of the power head is improved, an angle adjuster is arranged on one side of a gearbox away from a main motor, and a transmission shaft in the angle adjuster is circumferentially and fixedly connected with a driving shaft, thus a toolface azimuth is adjusted accurately and efficiently and a structure of a rotary brake device of the main motor is simplified by the angle adjuster which has functions of accurate angle adjustment, locking and anti-rotation.

Abstract: The invention relates to a rotation angle control and braking device for a power head of a directional drill, belonging to the technical field of coal mine drills. It includes a transmission shaft, driving piston, fixed toothed disk, moving toothed disk, end cover, rotary seat, connecting seat, and a rotary speed reducer with a self-locking function. One end of the transmission shaft is fixedly connected to the drill's driving shaft. The fixed and moving toothed disks are sheathed on the transmission shaft, with springs placed between the moving toothed disk and the end cover. Skewed teeth between the disks engage under spring action. By injecting oil into a sealing cavity between the connecting seat and driving piston, the driving piston moves the moving toothed disk to disengage the skewed teeth. The rotary seat, fixed to the moving toothed disk, connects to the rotary speed reducer's output disk, enabling controlled rotation.

Abstract: The present invention relates to a combined drilling system with double rotary driving devices and a control method, belonging to the technical field of coal mine drills. The other end of a driving shaft in the gearbox connects to an adjuster, which includes a transmission shaft, fixed toothed disk, moving toothed disk, rotary seat, end cover, and a rotary speed reducer with a self-locking function. One end of the transmission shaft is fixedly connected to the driving shaft. The fixed and moving toothed disks are sheathed on the transmission shaft, with the fixed toothed disk engaged with the moving toothed disk through skewed teeth. The moving toothed disk is rotationally connected and can slide axially along the transmission shaft. The rotary seat is fixedly connected to the moving toothed disk, while the rotary speed reducer's output disk is coaxially fixed to the rotary seat, enabling controlled rotation.

Abstract: The present disclosure relates to a stent for a TIPS surgery, including a first stent body and a second stent body. During use, the first stent body sleeves the second stent body, to control a self-expansion range of the second stent body. The first stent body includes first connectors, intermediate connectors, and second connectors. The second stent body is formed by weaving a single strand of memory alloy. The second stent body includes a first segment and a second segment which are connected. The first segment is of a woven spiral structure, and the second segment is of a woven self-locking structure. By arranging the first stent body to include the first connectors, the intermediate connectors, and the second connectors, the first stent body can shorten to a minimal extent in a length direction during expansion.

Abstract: Provided is a method for the high expression of a recombinant human serum albumin, characterized in comprising the step of co-expressing: (a) a human serum albumin gene, and (b) one or more rHSA expression promoting factor genes in a yeast host cell.

Abstract: The present invention relates to a coal mine intelligent directional drill and its drilling method, belonging to the technical field of coal mine drills. It comprises a moving platform, machine frame, clamper, main manipulator, power head, drill pipe storage system, control system, and hydraulic system. The power head structure is improved by adding an angle adjuster with accurate angle adjustment, locking, and anti-rotation functions. The angle adjuster is positioned on the gearbox side opposite the main motor, connected via a driving shaft. The control system includes a toolface azimuth detection and initialization system that works with the angle adjuster. This solves prior issues such as the absence of specialized toolface azimuth adjustment devices, low precision, low track adjustment efficiency, and challenges in achieving automatic directional drilling in the prior art. The invention enhances precision and efficiency, enabling automated, intelligent directional drilling.

Abstract: The invention relates to a rotation angle control and braking device for a power head of a directional drill, belonging to the technical field of coal mine drills. It includes a transmission shaft, driving piston, fixed toothed disk, moving toothed disk, end cover, rotary seat, connecting seat, and a rotary speed reducer with a self-locking function. One end of the transmission shaft is fixedly connected to the drill's driving shaft. The fixed and moving toothed disks are sheathed on the transmission shaft, with springs placed between the moving toothed disk and the end cover. Skewed teeth between the disks engage under spring action. By injecting oil into a sealing cavity between the connecting seat and driving piston, the driving piston moves the moving toothed disk to disengage the skewed teeth. The rotary seat, fixed to the moving toothed disk, connects to the rotary speed reducer's output disk, enabling controlled rotation.

Abstract: The present invention relates to a combined drilling system with double rotary driving devices and a control method, belonging to the technical field of coal mine drills. The other end of a driving shaft in the gearbox connects to an adjuster, which includes a transmission shaft, fixed toothed disk, moving toothed disk, rotary seat, end cover, and a rotary speed reducer with a self-locking function. One end of the transmission shaft is fixedly connected to the driving shaft. The fixed and moving toothed disks are sheathed on the transmission shaft, with the fixed toothed disk engaged with the moving toothed disk through skewed teeth. The moving toothed disk is rotationally connected and can slide axially along the transmission shaft. The rotary seat is fixedly connected to the moving toothed disk, while the rotary speed reducer's output disk is coaxially fixed to the rotary seat, enabling controlled rotation.

Abstract: The present invention belongs to the technical field of coal mine drills, and relates to a coal mine automatic directional drill, comprising a moving platform, a machine frame, a clamper, a main manipulator, a power head, a drill pipe storage system, a control system and a hydraulic system. In the present invention, a structure of the power head is improved, an angle adjuster is arranged on one side of a gearbox away from a main motor, and a transmission shaft in the angle adjuster is circumferentially and fixedly connected with a driving shaft, thus a toolface azimuth is adjusted accurately and efficiently and a structure of a rotary brake device of the main motor is simplified by the angle adjuster which has functions of accurate angle adjustment, locking and anti-rotation.

Abstract: The present invention relates to a coal mine intelligent directional drill and its drilling method, belonging to the technical field of coal mine drills. It comprises a moving platform, machine frame, clamper, main manipulator, power head, drill pipe storage system, control system, and hydraulic system. The power head structure is improved by adding an angle adjuster with accurate angle adjustment, locking, and anti-rotation functions. The angle adjuster is positioned on the gearbox side opposite the main motor, connected via a driving shaft. The control system includes a toolface azimuth detection and initialization system that works with the angle adjuster. This solves prior issues such as the absence of specialized toolface azimuth adjustment devices, low precision, low track adjustment efficiency, and challenges in achieving automatic directional drilling in the prior art. The invention enhances precision and efficiency, enabling automated, intelligent directional drilling.

Abstract: The present disclosure relates to a stent for a TIPS surgery, including a first stent body and a second stent body. During use, the first stent body sleeves the second stent body, to control a self-expansion range of the second stent body. The first stent body includes first connectors, intermediate connectors, and second connectors. The second stent body is formed by weaving a single strand of memory alloy. The second stent body includes a first segment and a second segment which are connected. The first segment is of a woven spiral structure, and the second segment is of a woven self-locking structure. By arranging the first stent body to include the first connectors, the intermediate connectors, and the second connectors, the first stent body can shorten to a minimal extent in a length direction during expansion.

Abstract: Systems and methods relating to placement of an ultrasound transducer for a procedure. In a non-limiting embodiment, a 3D environment including images of a body region of a patient, as well as images including a first virtual representation of an ablation needle at a first location and a second virtual representation of an ultrasound transducer at a second location is rendered on a display device. A determination may be made as to whether the first and second virtual representations collide at a first collision point. If so, at least one parameter associated with an orientation and/or position of the second virtual representation may be adjusted. A determination may then be made as to whether or not the first and second virtual representations still collide and, in response to determining that there is no collision, position data indicating the location of the second virtual representation after the adjustment, is stored.

Abstract: A system for providing visual three dimensional assistance to a user during a medical procedure involving a soft organ. The system and method provide visual assistance to a user during a medical procedure involving a soft organ. The system and method utilize a processor for generating an image of the soft organ, a surgical instrument tracker for tracking a surgical instrument during the medical procedure, and a display in communication with the processor and the surgical instrument tracker for visually displaying in three dimensions, the image of the soft organ and the surgical instrument in relation to the soft organ.

Abstract: Provided is a method for the high expression of a recombinant human serum albumin, characterized in comprising the step of co-expressing: (a) a human serum albumin gene, and (b) one or more rHSA expression promoting factor genes in a yeast host cell.

Abstract: The present teaching relates to surgical procedure assistance. In one example, a first image of an organ having a lesion is obtained prior to a surgical procedure. Information related to a pose of a surgical instrument at a first location with respect to the lesion is received from a sensor coupled with the surgical instrument. A visual environment having the lesion and the surgical instrument rendered therein is generated based on the first image and the information received from the sensor. A second image of the organ is obtained when the surgical instrument is moved to a second location with respect to the lesion during the surgical procedure. The second image captures the lesion and the surgical instrument. The pose of the surgical instrument and the lesion rendered in the visual environment are adjusted based, at least in part, on the second image.

Abstract: The present teaching relates to surgical procedure assistance. In one example, a first set of positions of a plurality of sensors are obtained in an image captured prior to a surgical procedure. The plurality of sensors are coupled with a patient's body. One or more second sets of positions of the plurality of sensors are obtained based on information from a tracking device associated with the plurality of sensors. The one or more second sets of positions change in accordance with movement of the patient's body. One or more similarity measures are calculated between the first set of positions and each of the one or more second sets of positions of the plurality of sensors. A timing at which the surgical procedure initiates is determined based on the one or more similarity measures.

Abstract: The present teaching relates to surgical procedure assistance. In one example, a plurality of similarity measures are determined between a first set of positions and a plurality of second sets of positions, respectively. The first set of positions is obtained with respect to a plurality of sensors coupled with a patient in an image captured prior to a surgical procedure. The plurality of second sets of positions are obtained from the plurality of sensors and change in accordance with movement of the patient. A target lesion is segmented in the image captured prior to the surgical procedure to obtain a lesion display object. The lesion display object is duplicated to generate a plurality of lesion display objects. The plurality of lesion display objects are presented on a display screen so that a distance between the plurality of lesion display objects changes in accordance with the plurality of the similarity measures.