Abstract: An improved structure of infusion catheter needle, comprised of a infusion soft needle, a steel needle protection, a steel needle and a steel needle chute; within, the chute is a long narrow casing provided with a catch above and an opening below, a catch is provided each on the external side close to where above the opening; a barrel to connect air exchange and blood back-flow mechanism is provided at a steel needle base in the chute; a square eyelet is each provided at both sides to the base to penetrate into the catch part of the chute for the base to move within the chute and engage the catch; a rubber plug provided at the tip of a one end in cone shape of the needle protection is inserted into the needle tube to secure the steel needle therein while the other end of the needle protection is provided with a joint to be inserted into the catch part, and a square eyelet corresponding to that from the base is each provided on both sides of the joint; so that after use, the steel needle is secured by the catc

Abstract: An improved structure syringe needle cover comprised of a sleeve, a coil spring, and a mount, wherein the sleeve is installed over the syringe needle and has minute hole disposed through it and, furthermore, a press release section is situated along the two exterior sides of the protective head thereby formed, with a hollow expandable and contractible space having a number of break lines along the two sides extending through its center section. Formed in the lower section is a passage that is aligned with the minute hole of the upper section and has an annular groove disposed around the exterior and, furthermore, there is a conjoinment section at the two sides of the annular groove.