Abstract: A safety syringe includes a needle seat, an adapter disposed on the needle seat, and an injection barrel penetrated into the needle seat and the adapter. When an outer sleeve is located at a first position, a first annular rib of the outer sleeve is engaged with an elastic wing of the adapter, such that the needle seat protrudes from the front end of the outer sleeve. A push rod penetrated into the injection barrel is used to take in and expel liquid medicine. When the outer sleeve is located at a second position, the outer sleeve accommodates the needle seat and the adapter inside and pushes against the elastic wind of the adapter through a second annular rib, such that the outer sleeve is detachable from the injection barrel together with the needle seat and the adapter, The injection barrel can be used for needle-free dosing injection.

Abstract: A safety syringe includes an outer barrel having a receiving groove located on an inner surface of a rear end thereof between a first annular flange and a second annular flange, an inner barrel having a needle mount located on a front end thereof and a positioning portion adjacent to the needle mount, and a plunger axially movably inserted into the inside of the inner barrel.

Abstract: A resistive memory and a method for writing data thereof are provided. The method for writing data includes: receiving a write-in data and generating an inverted write-in data; reading a current data in a plurality of selected memory cells; comparing the current data with the write-in data and the inverted write-in data; selecting the write-in data or the inverted write-in data to generate a final data according to a comparison result; and writing the final data into the selected memory cells.

Abstract: A resistive memory and a method for writing data thereof are provided. The method for writing data includes: receiving a write-in data and generating an inverted write-in data; reading a current data in a plurality of selected memory cells; comparing the current data with the write-in data and the inverted write-in data; selecting the write-in data or the inverted write-in data to generate a final data according to a comparison result; and writing the final data into the selected memory cells.

Abstract: A manual venous catheter assembly includes a catheter fixing barrel, a catheter provided at the catheter fixing barrel, a puncture needle fixing barrel movably sleeved onto the catheter barrel, a puncture needle fixed to the puncture needle fixing barrel, and a positioning ring base fixed to the puncture needle fixing barrel and surrounding the puncture needle. When the puncture needle fixing barrel moves to an extracted position, the puncture needle is pulled to depart from the catheter, such that the puncture needle is located in the catheter fixing barrel to avoid exposure, and the positioning ring base is abutted and engaged with the catheter fixing barrel to prevent separation between the catheter fixing barrel and the puncture needle fixing barrel, thus achieving the effects of simplifying the structure and facilitating assembly.

Abstract: A winged needle used in an internal fistula need set is made of an elastic material in one piece, having a hub for holding a needle, two wings respectively connected to two opposite sides of the hub and a protective cover connected to the front end of the hub and elastically movable relative to the hub between an open position where the needle is completely exposed for use to inject medicine or to withdraw the blood and a closed position where the needle is shielded by the protective cover to prevent the operator from being accidentally stabbed by the needle during needle collection. Thereby, the winged needle hub of the invention can achieve the advantages of simplified structure, convenient operation and improved safety of the needle.

Abstract: A manual venous catheter assembly includes a catheter fixing barrel, a catheter provided at the catheter fixing barrel, a puncture needle fixing barrel movably sleeved onto the catheter barrel, a puncture needle fixed to the puncture needle fixing barrel, and a positioning ring base fixed to the puncture needle fixing barrel and surrounding the puncture needle. When the puncture needle fixing barrel moves to an extracted position, the puncture needle is pulled to depart from the catheter, such that the puncture needle is located in the catheter fixing barrel to avoid exposure, and the positioning ring base is abutted and engaged with the catheter fixing barrel to prevent separation between the catheter fixing barrel and the puncture needle fixing barrel, thus achieving the effects of simplifying the structure and facilitating assembly.