Needle shielding systems are disclosed. The needle shielding system comprises a needle, a cover sleeve, and a needle shield. The needle has a needle tip and a needle bulge spaced apart from the needle tip. The cover sleeve is slidably mounted over the needle and comprises an end portion having an internal diameter smaller than the width of the needle bulge, and a cover sleeve shaft extending from the end portion towards the needle tip and having an internal diameter larger than the width of the needle bulge. The needle shield comprises a base plate slidably mounted over the needle adjacent to the end portion, and at least one resilient arm extending from the base plate towards the needle tip. In use the needle shield and cover sleeve move along the needle until the end portion contacts the needle bulge and the cover sleeve shaft and the arm cover the needle tip.

A method of using a power-injectable port includes obtaining the power-injectable access port, attaching a catheter to an outlet stem of the power-injectable access port, and implanting the power-injectable access port and the catheter into a patient. The method further includes identifying the power-injectable access port following the implanting, inserting a distal end of a needle through the septum and into the reservoir, and injecting contrast media through the needle at a rate of at least one milliliter per second. The power-injectable access port includes a housing, a septum, a reservoir, and an outlet stem in fluid communication with the reservoir. The power-injectable access port is rated for injection of contrast media at a flow rate of at least 1 milliliter per second. The power-injectable access port is structured for operation at a pressure in the reservoir of at least 35 psi.

A catheter assembly includes a flexible catheter (22), a needle (12) having a sharp distal tip, the needle (12) disposed in the flexible catheter (22) and moving from a first position that exposes the needle (12) to a second position, an outer member (26) that is configured to engage and disengage a catheter hub (14), an inner member (28) disposed in the outer member (26), and a needle protection (30) member disposed in the inner member (28), the needle protection member (30) enclosing at least a portion of the needle (12) when the needle (12) is in the second position.

The invention relates to a cannula, having an elongated tube, open on both ends, for receiving an elongated element and a movable safety clip enclosing the tube which encloses the tube end when advancing along the tube beyond one of the two ends. The safety clip and the elongated element are designed to attract or repel each other by magnetic force.

A shieldable needle device including a drive member is disclosed. The drive member is extendable between a biased position and an extended position for moving a tip guard from an first position to a second position in which the tip guard shields a distal end of the needle cannula. The shieldable needle device includes a pair of wings extending laterally from opposing sides of the hub that are movable between a laterally extending position and a dorsal position. With the wings in the dorsal position, the wings retain the drive member in the biased position thereby maintaining the tip guard in the first position. Movement of the wings from the dorsal position to the laterally extending position releases retainment of the drive member. A second drive member may be included.

A medical safety needle is comprised of a needle body having a needlepoint, a covering body having a detent portion slidable on the needle body to catch the needlepoint so as to cover the needlepoint, and a resilient cantilever supporting the detent portion, a sleeve following the covering body to cover a side face of the needle body, a collar portion slidably fitting on the covering body, which is configured to get in contact with the cantilever to press the cantilever radially inwardly, and a housing being formed in a unitary body with the collar portion or having an end face on which the collar portion is capable of being seated, the housing being configured to carry the covering body from a first position to have the needlepoint exposed to a second position to have the needlepoint covered by the covering body.

In a safety apparatus for medical needles, when leg portions are extended from a first folded position to a second extended position, a distal end of a needle is introduced into a space of a shield member connection hub, and a first blocking wall and a second blocking wall overlap so as to block the cross section of the space to form a double blocking wall and blocks the cross section of the space. The double blocking wall is capable of preventing the distal end of the needle from moving downward from the double blocking wall and preventing the distal end of the needle from being exposed to the outside of the apparatus.

A method of performing a power injection procedure, including taking an x-ray of a subcutaneously implanted access port in a patient to determine whether the access port includes a radiographic feature indicating that the access port is suitable for flowing fluid at a rate of at least about 1 milliliter per second through the access port. The access port defines one or more fluid reservoirs, each fluid reservoir accessible through a cannula-penetrable septum. The method further includes identifying the indicating radiographic feature on the x-ray, and in accordance with the presence of the indicating feature on the x-ray, flowing a fluid through the access port at a rate of at least about 1 milliliter per second.

A catheter assembly comprising a catheter carried by a catheter adapter, a needle having a sharp distal tip and disposed in the catheter such that in a first needle position, the needle extends beyond the catheter, a damping mechanism fixed adjacent to a proximal end of the needle, and a barrel assembly configured to surround the damping mechanism, the barrel assembly including first and second inner diameters, wherein when the needle is retracted into the barrel assembly away from the first needle position, the needle moves in accordance with a needle retraction speed profile, and the needle retraction speed profile is based on the interaction between the first and second inner diameters of the barrel assembly and the damping mechanism.

An infusion device includes a base for removably coupling to a fluid deliver device, a needle hub supporting an introducer needle and a catheter for delivering a substance to a patient. The infusion device includes a needle shield for covering the introducer needle after inserting the catheter into the patient. The needle shield includes a leg with a latching tab to couple to the coupling of the base until the legs spring outward to release the coupling. The legs have inwardly extending overlapping arms with an aperture receiving the introducer needle. A spring guard is formed on the needle shield and is spring biased inwardly toward the introducer needle to contact the arms. The introducer needle is retracted to release the arms allowing the arms to spring outwardly to disengage from the coupling of the base and to enable spring guard to spring inwardly to cover the tip of the introducer needle.