Abstract: A hybrid fast transfer switch and a method for fast switching between power sources using the same are provided. The hybrid fast transfer switch includes: a mechanical switch including a first stationary contact, a second stationary contact and a movable contact, wherein the first stationary contact is connected to a first power source, the second stationary contact is connected to a second power source, and the movable contact is connected to a load; a first diversion branch connected between the first power source and the load; a first energy absorption branch connected between the first power source and the load; a second diversion branch connected between the second power source and the load; and a second energy absorption branch connected between the second power source and the load.

Abstract: A reusable ultrasonic scalpel comprising a handle assembly and an ultrasonic waveguide extended to the distal end transmitting ultrasonic mechanical energy. Outside the ultrasonic waveguide is a sheath assembly, and the sheath assembly is detachably connected to the handle assembly by a quick connecting mechanism. The beneficial effects are mainly reflected on: reliable installation, easy to disassemble, easy to clean and disinfect. The sheath assembly serving as a consumable may be quickly replaced, while the remaining parts may be reused, and may undergo cleaning and high temperature steam sterilization. Thus, the cost of surgical consumables is greatly reduced, the burden on patients is reduced, and the risk of cross-infection when using the ultrasonic scalpel bar is also reduced.

Abstract: A bidirectional operation mechanism for a switching device and a switching device assembly. The bidirectional operation mechanism includes: a housing; an operation handle; a first driving member, rotatably installed to the housing, fixedly connected to the operation handle; a second driving member, rotatably installed to the housing, operatively connected to the first driving member and the switching device, upon an external force acting on the operation handle to drive the operation handle rotate between the closed position and the open position, the operation handle drives the first driving member to rotate together, so that the first driving member abuts against and drives the second driving member to rotate, enabling the switching device to perform a closing operation and an opening operation.

Abstract: Embodiments of the present disclosure provide a forward and reverse rotation control device for power-using equipment.

Abstract: Provided are an electrokinetic device and method for in-situ leaching of uranium. The electrokinetic device for in-situ leaching of uranium includes an injection well, a pumping well, a positive electrode, a negative electrode, leaching solution, and a direct current power supply. Uranium ore is provided between the injection well and the pumping well, the negative electrode is arranged in the injection well, and the positive electrode is arranged in the pumping well. The leaching solution is injected from the injection well, flows through the uranium ore, and then is pumped from the pumping well for uranium extraction. The direct current power supply is respectively connected to the positive electrode and the negative electrode, and is configured to apply direct current between the positive electrode and the negative electrode to promote the pooling of uranium-carrying ions towards the pumping well.

Abstract: Disclosed are an electromagnet driving mechanism, an electromagnet driving assembly and a dual power automatic transfer switch. The electromagnet driving mechanism includes: a mechanism frame; a stationary core; a movable core, including a moving stroke between a first position away from the stationary core and a second position in contact with the stationary core, the moving stroke including an approaching stroke section; a coil, configured to generate a magnetic attraction force between the stationary core and the movable core upon being energized to drive the movable core to move towards the second position; a reset spring member; and a reset auxiliary assembly, including a push member and a reset auxiliary spring. The reset auxiliary assembly applies a reset auxiliary spring force to the movable core in the approaching stroke section through the push member.

Abstract: Provided is an ultrasonic surgical knife blade. The projection of the blade on a shear plane is banana-like curved shape. From a proximal end to a distal end, the thickness of the blade varies from thick to thin, and then to thick and to thin again. The projection on a vertical shear plane is fruit knife-shaped. The height of the blade varies from high to low, and then gradually decreases, and an arc-shaped cutting groove is formed in the middle position. The present invention allows for an increase of swing amplitude in the bending direction and the effective working length of the blade. A boat-shaped or arc-shaped balance cutting groove is provided between the most distant node and a tip of the blade, such that the stability of ultrasonic vibration is improved.

Abstract: Provided are an electrokinetic device and method for in-situ leaching of uranium, belonging to the technical field of in-situ leaching of uranium. The electrokinetic device for in-situ leaching of uranium includes an injection well, a pumping well, a positive electrode, a negative electrode, leaching solution, and a direct current power supply. Uranium ore is provided between the injection well and the pumping well, the negative electrode is arranged in the injection well, and the positive electrode is arranged in the pumping well. The leaching solution is injected from the injection well, flows through the uranium ore, and then is pumped from the pumping well for uranium extraction. The direct current power supply is respectively connected to the positive electrode and the negative electrode, and is configured to apply direct current between the positive electrode and the negative electrode to promote the pooling of uranium-carrying ions towards the pumping well.

Abstract: The present disclosure discloses a fluid collection box for phacoemulsification surgery, including a case composed of a front plate, a body, and a rear plate. The case communicates with a waste liquid bag. The body has a perfusion passage and a suction passage that are disposed independently. The perfusion passage is a sealed circulation cavity defined by a cover and the body. The circulation cavity communicates with a first connection port and a second connection port on the body for perfusion. There is a gap between the cover and the body. Connection and disconnection of the perfusion passage is controlled by pressing the cover. The suction passage is a pipeline that communicates a third connection port with the waste liquid bag, and performs perfusion by a peristaltic pump. The suction passage further communicates with a negative pressure regulating loop, to regulate pressure within the suction passage.

Abstract: A frequency control method and system for an ultrasonic surgical tool. The frequency control method for an ultrasonic tool comprised: obtaining a maximum value of a phase difference between an operating voltage and an operating current of the ultrasonic surgical tool; determining whether the maximum value is less than zero, so as to obtain a first determination result; if the first determination result indicates that the maximum value is not less than zero, adjusting an operating frequency of the ultrasonic surgical tool to a frequency corresponding to the phase difference to zero; if the first determination result indicates that the maximum value is less than zero, subtracting a preset value from the maximum value to obtain a phase lock point; and adjusting, according to the phase lock point, the operating frequency of the ultrasonic tool.

Abstract: Disclosed are an electromagnet driving mechanism, an electromagnet driving assembly and a dual power automatic transfer switch. The electromagnet driving mechanism includes: a mechanism frame; a stationary core; a movable core, including a moving stroke between a first position away from the stationary core and a second position in contact with the stationary core, the moving stroke including an approaching stroke section; a coil, configured to generate a magnetic attraction force between the stationary core and the movable core upon being energized to drive the movable core to move towards the second position; a reset spring member; and a reset auxiliary assembly, including a push member and a reset auxiliary spring. The reset auxiliary assembly applies a reset auxiliary spring force to the movable core in the approaching stroke section through the push member.

Abstract: An ultrasonic phacoemulsification handpiece with a sensor and a surge control system and a method. The central aspiration lumen of the ultrasonic phacoemulsification handpiece consists of two components of plug-in loose fit: a fixed lumen and an extension lumen; a small pressure sensor is mounted on the extension lumen, but still able to keep the easy-to-use size and maintain the ultrasonic performance of the handpiece. The extension lumen minimizes the effect of ultrasonic vibration on the sensor while maintaining sufficient stiffness for installing and removing the phacoemulsification tip. The design of the handpiece transducer reduces the effect of this sensor installation on the ultrasonic performance. For ultrasonic phacoemulsification cataract removal surgery, the short distance from the pressure sensor to the surgical site provides a technical solution for reliably controlling the risk of the post occlusion surge.

Abstract: A reusable ultrasonic scalpel comprising a handle assembly and an ultrasonic waveguide extended to the distal end transmitting ultrasonic mechanical energy. Outside the ultrasonic waveguide is a sheath assembly, and the sheath assembly is detachably connected to the handle assembly by a quick connecting mechanism. The beneficial effects are mainly reflected on: reliable installation, easy to disassemble, easy to clean and disinfect. The sheath assembly serving as a consumable may be quickly replaced, while the remaining parts may be reused, and may undergo cleaning and high temperature steam sterilization.

Abstract: A dual power automatic transfer switch mechanism comprises a switch housing; a first spring; a second spring; a first pin which is disposed to correspond to a first power supply, the first spring acts between the first pin and the switch housing; and a second pin which is disposed to correspond to a second power supply, the second spring acts between the second pin and the switch housing. The dual power automatic transfer switch mechanism further comprises a first driving disk is configured to actuate the first pin moves between a first power-on position and a first power-off position; and a second driving disk is configured to actuate the second pin moves between a second power-on position and a second power-off position. The first and second driving disk are configured to rotate synchronously such that the first and the second pin cannot be in the power-on position at the same time.

Abstract: A switching mechanism for a dual power supply transfer switch. The switching mechanism has a switching assembly, which includes a driving plate, a driving rod, an actuator and an auxiliary mechanism. The driving plate includes an arc-shaped driving groove. The driving rod extends into the driving groove. The auxiliary mechanism includes a spring. The driving plate is able to rotate under an external force. The driving groove bypasses the driving rod when an end of the driving groove does not contact the driving rod, and the driving groove pushes the driving rod to rotate over a first angle and urges the spring to deform when the end of the driving groove contacts the driving rod. The spring recovers and drives the driving rod to rotate over a second angle after the spring having passed a dead point, thus causing the actuator turning on or off a first power supply. The switching mechanism also includes another switching assembly for switching a second power supply.

Abstract: A system includes a storage device storing a set of instructions and a processor in communication with the storage device. When executing the set of instructions, the processor is configured to cause the system to obtain a 3D image including a plurality of 2D images, the 3D image relating to a lesion of an object and determine a preliminary VOI in the 3D image. The processor is also configured to cause the system to determine a preliminary shape based on an intersection of the preliminary VOI and a 2D target image of the plurality of 2D images and determine a transformation matrix corresponding to an operation to transform the preliminary shape to a target shape relating to the 3D ROI. The processor is further also configured to cause the system to determine a transformed VOI based on the preliminary VOI and the transformation matrix.

Abstract: A frequency control method and system for an ultrasonic surgical tool. The frequency control method for an ultrasonic tool comprised: obtaining a maximum value of a phase difference between an operating voltage and an operating current of the ultrasonic surgical tool; determining whether the maximum value is less than zero, so as to obtain a first determination result; if the first determination result indicates that the maximum value is not less than zero, adjusting an operating frequency of the ultrasonic surgical tool to a frequency corresponding to the phase difference to zero; if the first determination result indicates that the maximum value is less than zero, subtracting a preset value from the maximum value to obtain a phase lock point; and adjusting, according to the phase lock point, the operating frequency of the ultrasonic tool.

Abstract: A switching mechanism for a dual power supply transfer switch. The switching mechanism has a switching assembly, which includes a driving plate, a driving rod, an actuator and an auxiliary mechanism. The driving plate includes an arc-shaped driving groove. The driving rod extends into the driving groove. The auxiliary mechanism includes a spring. The driving plate is able to rotate under an external force. The driving groove bypasses the driving rod when an end of the driving groove does not contact the driving rod, and the driving groove pushes the driving rod to rotate over a first angle and urges the spring to deform when the end of the driving groove contacts the driving rod. The spring recovers and drives the driving rod to rotate over a second angle after the spring having passed a dead point, thus causing the actuator turning on or off a first power supply. The switching mechanism also includes another switching assembly for switching a second power supply.

Abstract: A dual power automatic transfer switch mechanism, including: a switch housing; a first spring; a second spring; a first pin disposed on a first movable contact corresponding to a first power supply, the first spring acts between the first pin and the switch housing; and a second pin disposed on a second movable contact corresponding to a second power supply, the second spring acts between the second pin and the switch housing; a first driving disk is configured to actuate the first pin moves between a first power-on position and a first power-off position; a second driving disk is configured to actuate the second pin moves between a second power-on position and a second power-off position; wherein the first and second driving disk are configured to rotate synchronously such that the first and the second pin cannot in the power-on position at the same time.

Abstract: The present disclosure relates to a thermal trip compensation structure including a tripping bar having an ejector pin, a bimetal strip, a compensating component, a support for the compensating component, and an adjustment component. One end of the bimetal strip is connected with the support. The support receives and supports the compensating component. The adjustment component is capable of adjusting a position of the compensating component relative to the support. The compensating component has an inclined slant surface which is set in such a way that a gap between the inclined slant surface and the ejector pin of the tripping bar when the bimetal strip is deflected after the occurrence of short circuit is less than the gap between the inclined slant surface and the ejector pin of the tripping bar when the bimetal strip is not deflected before the occurrence of the short circuit.