The present invention generally relates to systems and methods for delivering and/or receiving a substance or substances such as blood from subjects. In one aspect, the present invention is directed to devices and methods for receiving or extracting blood from a subject, e.g., from the skin and/or from beneath the skin, using devices containing a substance transfer component (for example, one or more needles or microneedles) and a reduced pressure or vacuum chamber having an internal pressure less than atmospheric pressure prior to receiving blood. In some embodiments, the device may contain a “snap dome” or other deformable structure, which may be used, at least in part, to urge or move needles or other suitable substance transfer components into the skin of a subject. In some cases, for example, the device may contain a flexible concave member and a needle mechanically coupled to the flexible concave member such that the needle may be urged or moved into the skin using the flexible concave member. Other aspects of the present invention are directed at other devices for receiving blood (or other bodily fluids, e.g., interstitial fluid), kits involving such devices, methods of making such devices, methods of using such devices, and the like.

A safety needle device includes a housing including a passageway with a needle cannula extending therefrom. A shielding member 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 which biases the shielding member toward the second position. A fluid and/or a temperature activation material 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. The fluid medium flowing through the needle cannula causes the fluid activation material to deform, such as through expansion, thereby releasing the shielding member from the first position and allowing a drive member to bias the shielding member toward the second position.

A disposable lancet assembly includes: a spring aligned along a linear axis; a lancet aligned along the linear axis adjacent to the spring; a needle cup aligned along the linear axis adjacent to the lancet; and a housing including a channel that accepts an actuator interface such that the needle cup and lancet are able to be moved along the linear axis via the actuator interface. A medical test cartridge includes: a bottom plate; a microfluidic chip; and a top plate, wherein the top plate is coupled to the bottom plate such that the microfluidic chip is retained between the top plate and the bottom plate. A sample collection and testing device includes: a lancet assembly; a lancet actuator coupled to the lancet assembly; and a microfluidic test chip.

Needle protector assemblies including needle assemblies and needle protectors for housing used blood collection needles are disclosed. The needle protectors are single-piece protectors that include an open distal end for receiving a needle hub (with a needle mounted thereon). A retaining member locks the needle hub when the needle hub is substantially retracted. A stop engages the needle hub in a fully retracted position such that a needle post is completely contained within an interior chamber of the needle protectors. A viewing slot in the needle protectors is provided.

The invention relates to the technical field of medical instruments, in particular to a push-type blood collection needle, comprising a housing having an accommodating cavity therein, a rear cover and a needle body disposed in the accommodating cavity. The rear cover is movably disposed on the housing, and the rear cover has a supporting leg (21) extending into the accommodating cavity. The needle body is provided with a rib. The accommodating cavity is internally provided with a projecting part that cooperates with and blocks the bottom of the rib. The supporting leg is provided with a stopper that cooperates with and blocks the side wall of the rib. And an elastic member is disposed between the needle body and the rear cover. The invention has a reasonable structure setting, is convenient to operate, enables automated assembly production and can realize safe blood collection and the control of the depth.

A device is used in combination with a fluid pressure source and a replaceable sampling tube having a pointed cannula section and a hollow for capillary blood collection. The device is provided with: a body defining a bore extending along an axis; a first flow path in fluid communication with the fluid pressure source; a rotor fitting in the bore and being capable of spinning in both directions about the axis; a boss section extending along the axis and so dimensioned as to rotatably support the sampling tube coaxially with the axis and expose the cannula section out of the boss section; and a detachable fastening binding the sampling tube to the rotor so as to set the sampling tube into rotation concentric with the axis and establish fluid communication between the first flow path and the hollow of the sampling tube.

An apparatus includes a housing defining an inner volume, a distal coupler at least temporarily coupled to a distal end portion of the housing and configured to be placed in fluid communication with a bodily fluid source, a fluid communicator disposed in the inner volume, and a lock coupled to the housing. The lock is transitionable between a first configuration in which the lock couples the distal coupler to housing such that a portion of the fluid communicator extends through a seal of the distal coupler to place the distal coupler in fluid communication with a proximal end portion of the housing and a second configuration in which the lock allows for removal of the distal coupler. The lock is configured to be transitioned back to the first configuration after removing the distal coupler to limit access to the fluid communicator via the distal end portion of the housing.

A vein stabilizer device for venipuncture procedures is provided. The vein stabilizer device is embodied in an elongated body providing an external stabilizer tip protruding from a distal end of the body. The stabilizer tip may be defined by a supratip break, an infratip break, and two lateral breaks. Surface area of the breaks are dimensioned and adapted to engage the skin of a patient so as to stabilize a vein therein. The elongated body has a cavity for slidably receiving a finger of a user in such a way that the user can selectively apply pressure through a chosen break surface.

The present invention relates generally to systems and methods for measuring an analyte in a host. More particularly, the present invention relates to systems and methods for transcutaneous measurement of glucose in a host.

A medical device configured as a blood collection tube holder, the device having a body with two spaced-apart, oppositely facing, coaxially aligned needles including a forwardly facing venipuncture needle and a rearwardly facing fluid discharge needle, the two needles being held by first and second needle holders separated by a compressible fluid seal defining part of a fluid path between the two needles and the two needle holders. The body also includes a discharge needle displacement member that is manually repositioned following removal of the last blood tube holder so that the discharge needle displacement member contacts the second needle holder and displaces the second needle holder and the fluid discharge needle laterally inside the body to initiate retraction of the venipuncture needle into a rearwardly projecting needle retraction chamber.