摘要:
A safety needle device (6) includes a housing including a passageway with a needle cannula (7) extending therefrom. A shielding member (15) is movable between a first position in which a puncture tip of the needle cannula is exposed therefrom and a second position in which the puncture tip of the needle cannula is encompassed therein. The shielding member is maintained in the first position against a biasing force (9) which biases the shielding member toward the second position. A fluid and/or temperature activation material (57), such as a hydrogel or a compressed sponge, is associated with the shielding member and is adapted to deform upon contact with a fluid medium and/or a certain temperature or temperature range. Fluid flowing through the needle cannula, such as blood flow during a blood collection procedure, causes the activation material to deform, such as through expansion, thereby releasing the shielding member from the first position and allowing the drive member to bias the shielding member toward the second position.
摘要:
A needle assembly (10) includes a housing (12), a needle (14) projecting from the housing (12), a needle shield (16) displaceable relative to the needle (14) to vary the length of an unshielded portion of the needle (14) projecting from the needle shield (16) and locking means (48) for locking the needle shield (16) in a position in which the point (34) of the needle (14) is shielded by the needle shield (16).
摘要:
A safety needle device (6) includes a housing including a passageway with a needle cannula (7) extending therefrom. A shielding member (15) is movable between a first position in which a puncture tip of the needle cannula is exposed therefrom and a second position in which the puncture tip of the needle cannula is encompassed therein. The shielding member is maintained in the first position against a biasing force (9) which biases the shielding member toward the second position. A fluid and/or temperature activation material (57), such as a hydrogel or a compressed sponge, is associated with the shielding member and is adapted to deform upon contact with a fluid medium and/or a certain temperature or temperature range. Fluid flowing through the needle cannula, such as blood flow during a blood collection procedure, causes the activation material to deform, such as through expansion, thereby releasing the shielding member from the first position and allowing the drive member to bias the shielding member toward the second position.
摘要:
A needle assembly, comprising: a housing including a passageway extending therethrough and a needle cannula having a puncture tip extending from a forward end thereof; a shielding member movable with respect to the housing between a first position in which the puncture tip of the needle cannula is exposed and a second position in which the puncture tip of the needle cannula is shielded by the shielding member, the shielding member maintained in the first position against a biasing force provided by a drive member biasing the shielding member toward the second position; and an activation material associated with the shielding member and adapted to deform upon the flow of fluid through the passageway of the housing, wherein fluid flowing through the passageway of the housing causes the activation material to deform, thereby releasing the shielding member from the first position and causing the drive member to bias the shielding member toward the second position.
摘要:
A safety needle device (6) includes a housing including a passageway with a needle cannula (7) extending therefrom. A shielding member (15) is movable between a first position in which a puncture tip of the needle cannula is exposed therefrom and a second position in which the puncture tip of the needle cannula is encompassed therein. The shielding member is maintained in the first position against a biasing force (9) which biases the shielding member toward the second position. A fluid and/or temperature activation material (57), such as a hydrogel or a compressed sponge, is associated with the shielding member and is adapted to deform upon contact with a fluid medium and/or a certain temperature or temperature range. Fluid flowing through the needle cannula, such as blood flow during a blood collection procedure, causes the activation material to deform, such as through expansion, thereby releasing the shielding member from the first position and allowing the drive member to bias the shielding member toward the second position.
摘要:
A safety needle apparatus is provided. The safety needle apparatus includes a needle assembly (416) including a needle mount and a needle cannula (416b). The needle cannula defines a lumen and has a sharpened distal tip. The needle mount supports the proximal end of the needle cannula and is adapted to engage an intravenous line (490). The safety apparatus includes a shield (412) positioned about the needle cannula. The needle cannula is movable in relation to the shield. The apparatus also includes a lock insert (426) supported on the needle cannula and a locking member (442) extending from an internal surface of the shield, wherein the locking insert and the locking member are configured to prevent movement of the needle cannula. Moreover, a platform (460) including a base member (460b), which is configured to support the needle cannula at a substantially orthogonal orientation to the plane of a top surface of the platform and supports the shield, is included.
摘要:
Medical needle shield apparatus for covering a needle after use. The medical needle shield apparatus includes a first member, such as, for example, a syringe barrel having a needle mounted therewith, and a sheath covering it in part. A second member, such as, for example, a shield is mounted within the first member. The shield is movable between a first position whereby the needle is exposed and a second position whereby the needle is covered. A lock is mounted with the barrel such that the shield is slidably movable along an outer surface of the lock. The lock includes a tang that is movable radially outward to fix the shield in the second position.
摘要:
The shielding means is for a needle of a container-needle assembly comprising a container (21) having an elongate body, a needle (13) and connecting parts (22, 14) for connecting the container (21) releasably with the needle (13). The shielding means comprises two coaxial tubular bodies, an inner (5) and an outer (1) body, which are made to telescope in relation to each other. The outer tubular body (1) is adapted to at least partially receive the body of the container (21), and the inner tubular body (5) is adapted to be displaced from a retracted position, in which the needle (13) is exposed, to an advanced position, in which the needle (13) is surrounded by the inner tubular body (5). The shielding means further comprises connection means (3) for connecting said outer tubular body (1) with the needle (13) without connecting to the container.