37results about How to "Reduce the risk of accidental injury" patented technology

The invention provides a single laparoscope auxiliary operation device. The single laparoscope auxiliary operation device comprises a laparoscope, the two universal rotating mechanisms are arranged on the laparoscope, each universal rotating mechanism comprises a ball sleeve and a sleeve plate, the ball sleeves are arranged on the laparoscope in a sliding and sleeving mode, the sleeve plates are arranged in the middles of the ball sleeves in a sleeving mode, and the ball sleeves can rotate on the sleeve plates in a universal mode; the direction control mechanism controls the sleeve plate far away from the laparoscope lens to move on the plane; the moving mechanism controls the laparoscope to slide in the ball sleeve; the supporting mechanism is used for supporting the direction control mechanism; one end of the connecting frame is fixedly connected with the sleeve plate close to the laparoscope lens, and the other end of the connecting frame is fixedly connected with the supporting mechanism; and the pedal controller is connected with the direction control mechanism and the moving mechanism and controls the direction control mechanism and the moving mechanism to act. According to the laparoscope, a surgeon can control the movement of the lens of the laparoscope through the pedal controller to obtain a required operation picture, and the laparoscope and instruments of the surgeon can be effectively prevented from fighting with each other.

The invention discloses four elevator safety devices. When a lifting body descends in a speed over a specified speed due to an accident, a brake body is pressed on a guide rail, braking force is generated by relative sliding of the brake body and the guide rail, so that the lifting body is decelerated until stopping; when the braking force is increased due to the decrease of the speed and the like, positive pressure can be automatically controlled, when the braking force exceeds a specified value, the pressure of an elastic body is transmitted to a frame, and the braking force is continuouslyadjusted within a larger range; and in the braking process, when a friction coefficient increases due to the decrease of the speed, the braking force can still be automatically kept at the specified value, so that the braking deceleration speed is generally kept constant, the impact on passengers is reduced, and the risk of the accidental injury to the passengers is reduced.

The invention provides a venipuncture needle, comprising a catheter, a needle, a needle seat, a needle handle, and a needle withdrawal assembly located on the needle handle. Advancing the catheter into the proper position in the patient's vein increases the success rate of the needle. The needle withdrawal component provided by the venipuncture needle has a simple structure and proper arrangement of functions for use, which not only improves the puncture success rate of the puncture needle, but also effectively protects the medical staff from accidentally stabbing the puncture needle after use.

The invention discloses a water blocking cap press-mounting assistive tool which comprises an assistive tool press head. The assistive tool press head is provided with a shaft body, a front end and a tail end. The front end is a stepped shaft. A groove is formed in the top face of the front-most end of the stepped shaft, is concave in the axial direction of the assistive tool press head, and is internally provided with a magnet. The tail end is provided with a knocking cap which is provided with a knocking end face and used for being knocked. A water blocking cap is attracted by the magnet in the groove and prevented from falling off in the mounting process, the front end is the stepped shaft to ensure that the end face of the water blocking cap is tightly attached to the assistive tool press head, and the consistency of the mounting depth can be ensured through contact of the stepped face of the stepped shaft and a to-be-mounted face.

The invention relates to a method for preparing important midbody (1R,2S)-2-(3,4-difluorinated phenyl) cyclopropylamine of ticagrelor. The method mainly comprises the following steps: performing cyclopropane reaction on camphor sulfonium ylide I and acrylonitrile, synthesizing (1R, 2S)-2-(3,4-difluorinated phenyl) cyclopropyl nitrile II in a stereoselectivity manner, and further performing hydrolysis and holfman degradation reaction, thereby obtaining a target product IV. The method has the characteristics of cheap initial materials, high yield, good stereoselectivity, high enantioselectivity, low production cost and the like, and has important significance in industrial production.