Abstract: A method for performing cardiology and endovascular interventional operations includes: Step 1, putting an artery sheath into a punctured artery; inserting a Pigtail catheter into a first end of the artery sheath, and advancing it to a left ventricle; injecting contrast into the Pigtail catheter to perform left ventricle angiography; and withdrawing the Pigtail catheter from the artery sheath. Step 2, inserting a guiding catheter into the first end of the artery sheath, and advancing it to the left ventricle. Step 3, advancing a myocardial biopsy forcep to a left ventricle endocardium through the guiding catheter to collect a piece of myocardium. Step 4, withdrawing the myocardial biopsy forcep from the guiding catheter, and preserving a myocardium specimen. Step 5, repeating steps 3 and 4 until collecting enough number of myocardium specimens. Step 6, withdrawing the guiding catheter from the artery sheath, and pulling the artery sheath out of the artery.

Abstract: A battery exchange method is implemented in a control device communicatively coupled to a work machine and a battery exchange device. The method includes receiving a battery exchange request from the work machine, calculating a synchronization location and a synchronization time of the work machine and the battery exchange device, generating pre-judgment information, sending the pre judgment information and a synchronization command to the battery exchange device to control the battery exchange device to move toward the work machine according to the pre-judgment information and the synchronization command, continually receiving the first status information from the work machine and second status information from the battery exchange device, determining whether synchronization of the work machine and the battery exchange device is complete, and sending a battery exchange command to the battery exchange device to control the battery exchange device to exchange the battery of the work machine.

Abstract: The present invention discloses methods and a device for performing cardiology and endovascular interventional operations via a radial artery or ulnar artery. The method includes: step 1, putting an artery sheath into a punctured artery, wherein the artery is a radial artery or ulnar artery; step 2, allowing a guiding catheter to penetrate into the artery sheath from outside the body and penetrate out of the artery sheath from the other end to be advanced to a left ventricle; step 3, advancing a myocardial biopsy forcep to the left ventricle endocardium through the guiding catheter to collect a piece of myocardium; step 4, withdrawing the myocardial biopsy forcep from the guiding catheter to be outside the body, and preserving the myocardium specimen; step 5, repeating the step 3 and the step 4 until collecting enough number of specimens; and step 6, withdrawing the guiding catheter from the artery sheath, pulling the artery sheath out of the artery, and performing compression dressing over the access site.

Abstract: A battery exchange method is implemented in a control device communicatively coupled to a work machine and a battery exchange device. The method includes receiving a battery exchange request from the work machine, calculating a synchronization location and a synchronization time of the work machine and the battery exchange device, generating pre-judgment information, sending the pre judgment information and a synchronization command to the battery exchange device to control the battery exchange device to move toward the work machine according to the pre-judgment information and the synchronization command, continually receiving the first status information from the work machine and second status information from the battery exchange device, determining whether synchronization of the work machine and the battery exchange device is complete, and sending a battery exchange command to the battery exchange device to control the battery exchange device to exchange the battery of the work machine.

Abstract: A variable LED display screen includes a plurality of LED modules and a plurality of mounting assemblies arranged among adjacent LED modules and configured to connecting the LED modules together to form the display screen. The mounting assemblies are adjustable mounting assemblies, the mounting assemblies can finely adjust the relative gaps between adjacent LED modules connected with the mounting assemblies, and the adjustable mounting assemblies includes an X-axis adjustable mounting member, a Y-axis adjustable mounting member and a middle adjustable mounting member. The variable LED display screen of the present invention not only allows size adjustment of the LED display screen, but also allows shape adjustment of the LED display screen. In addition, multiple accessories can be connected to the display screen to extend functions of the display screen.

Abstract: The application discloses a bendable LED module, which comprises: an elastic component layer (20) on which a plurality of light emitting assemblies are arranged; an adjusting part (30) which acts on the back of the elastic component layer (20) and tightens or stretches the two sides of the elastic component layer (20), such that the elastic component layer (20) is bent into an inner arc or outer arc. After the elastic component layer (20) is bent and deformed, a larger clearance or gap won't appear between the light emitting assemblies, which makes the display effect better.

Abstract: The present application discloses an LED module mounting mechanism which comprises a fixing frame (2), at least one gap adjusting mechanism mounted on the fixing frame (2), and at least two moving blocks (3) movably connected with the fixing frame (2). The LED modules (100) are arranged on the moving blocks (3). Two ends of the gap adjusting mechanism are connected with the moving blocks (3) respectively. A gap between the LED modules (100) arranged on the moving blocks (3) is adjusted by moving the moving blocks (3) on the two ends toward or away from each other. The present application belongs to the technical field of LED modules and LED display screens. The LED module mounting mechanism solves the technical problems in the prior art that the method for adjusting the planar gap between the LED modules is complex and unstable, and adjusting the planeness which is perpendicular to the planar direction of the LED modules can't be achieve.

Abstract: The invention relates to a variable LED display screen which comprises a plurality of LED modules and a plurality of mounting assemblies arranged among adjacent LED modules and configured to connecting the LED modules together to form the display screen. The mounting assemblies are adjustable mounting assemblies, the mounting assemblies can finely adjust the relative gaps between adjacent LED modules connected with the mounting assemblies, and the adjustable mounting assemblies comprises an X-axis adjustable mounting member, a Y-axis adjustable mounting member and a middle adjustable mounting member. The variable LED display screen of the present invention not only allows size adjustment of the LED display screen, but also allows shape adjustment of the LED display screen. In addition, multiple accessories can be connected to the display screen to extend functions of the display screen.

Abstract: The present application discloses an LED module mounting mechanism which comprises a fixing frame (2), at least one gap adjusting mechanism mounted on the fixing frame (2), and at least two moving blocks (3) movably connected with the fixing frame (2). The LED modules (100) are arranged on the moving blocks (3). Two ends of the gap adjusting mechanism are connected with the moving blocks (3) respectively. A gap between the LED modules (100) arranged on the moving blocks (3) is adjusted by moving the moving blocks (3) on the two ends toward or away from each other. The present application belongs to the technical field of LED modules and LED display screens. The LED module mounting mechanism solves the technical problems in the prior art that the method for adjusting the planar gap between the LED modules is complex and unstable, and adjusting the planeness which is perpendicular to the planar direction of the LED modules can't be achieve.

Abstract: The application discloses a bendable LED module, which comprises: an elastic component layer (20) on which a plurality of light emitting assemblies are arranged; an adjusting part (30) which acts on the back of the elastic component layer (20) and tightens or stretches the two sides of the elastic component layer (20), such that the elastic component layer (20) is bent into an inner arc or outer arc. After the elastic component layer (20) is bent and deformed, a larger clearance or gap won't appear between the light emitting assemblies, which makes the display effect better.

Abstract: An electrical mosquito swatter includes a swatter body has an electric surface switched within the frame thereof, a battery mounted in the handle and controlled by a control switch set to raise a voltage on the electric surface for electrocuting insects, and an electric fan mounted inside the handle and controlled by the control switch to causes currents of air toward air outlets on the oval frame of the swatter body around the electric surface to force insets toward the center area of the electric surface.