A specimen collection assembly including a flow control member for adjustably altering a flow path is disclosed. In one configuration, the flow control member defines a regulation channel in fluid communication with a lumen of a cannula, wherein the flow control member is configured to adjustably alter an effective flow distance between the lumen of the cannula and an interior of an evacuated collection container. In another configuration, the flow control member is positioned to vary an effective cross-sectional area of at least one of an inlet port and an outlet port adapted to be in fluid communication with the lumen and the evacuated collection container.

When drawing blood, it is useful to always have the needle in a bevel up position but this cannot be guaranteed using conventional syringe barrel/needle assemblies. This problem is solved by providing a needle holder having a proximal end and a distal end, the proximal end being provided with means adapted to secure an integral screw-threaded hub of a needle or a double ended needle, wherein the means comprises a circular wall defining a bore through the proximal end of the needle holder, the wall incorporating a pair of opposed helical ledges, the path of each respective ledge spanning up to half the circumference of the bore, the incline of each ledge being so arranged on the wall as to permit complementary mating contact with a screw-threaded hub of a needle or a double ended needle.

This disclosure generally relates to medical devices that include a transmitter assembly positioned on top of a sensor assembly. A sensor assembly includes a sensor base having a bottom surface and a top surface having an interface. The interface accommodates a sensor stack that includes at least one sensor head having electrical contact pads connected to an elastomeric connector. The sensor assembly further includes a mounting base having a first side that attaches to the bottom surface of the sensor base, and a second side that adheres to a patient's skin. A transmitter assembly includes a transmitter shell and a transmitter cap having an interface that engages with the sensor base. Also, the transmitter assembly includes electrical contacts disposed on the transmitter cap that connect with the electrical contact pad(s) of the sensor assembly.

Various embodiments of the present disclosure describe a diversion device that traps an initial flow of blood in a diversion chamber of the diversion device. The diversion chamber may be defined, in part, by a housing shell, a housing base, and a filter. The filter may be a porous material that allows air, but not blood, to flow through it. After the diversion chamber is filled, a subsequent flow of blood may be directed into a collection vessel through an internal conduit of the diversion device.

An apparatus includes a fluid reservoir, a sterilization member, and a transfer adapter. The sterilization member operably couples to the fluid reservoir. The sterilization member is configured to be transitioned between a first configuration, in which the sterilization member obstructs an inlet surface of the fluid reservoir and maintains the inlet surface in a substantially sterile environment, and a second configuration, in which the inlet surface is unobstructed. The transfer adapter is configured to be placed in fluid communication with a portion of a patient. The transfer adapter is configured to move relative to the sterilization member from a first position to a second position such that a surface of the transfer adapter contacts the sterilization member to transition the sterilization member to the second configuration. The fluid reservoir is placed in fluid communication with the transfer adapter when the transfer adapter is in the second position.

A biological fluid separation device and a separation process that allows for efficient separation of plasma from a blood sample is disclosed. A biological fluid separation device of the present disclosure is adapted to receive a blood sample having a cellular portion or cells and a plasma portion or plasma. A biological fluid separation device of the present disclosure separates plasma from cells using a track-etched membrane and cross-flow filtration.

The invention is related to a hand-operated actuator mechanism for driving a piercing element with increased safety. The actuator mechanism comprises a mounting element connected to a trigger element by a first breakable connection element. It also comprises a piercing element carrier connected to the trigger element by a second breakable connection element. The trigger element further comprises a pushing member that can be pushed with a human finger. The first breakable connection element is configured to be broken by means of a predetermined pushing finger force pushing said pushing member. The piercing element carrier being movable between an initial position wherein the first and the second breakable connection elements are unbroken, and a stop position wherein an abutment stops a movement of the piercing element carrier.

A safety catheter insertion assembly including a catheter hub coupling assembly. The safety catheter insertion assembly having a needle hub slideably coupled to a needle housing such that the needle hub is moveable between a first position wherein an insertion needle extends from the needle housing, and a second position wherein the sharp distal tip is housed within the needle housing, the catheter hub coupling assembly coupling the catheter hub to the needle housing in the first position and releasing the catheter hub from the needle housing in the second position.

A specimen collection assembly (100) including a flow control member (106) for adjustably altering a flow path is disclosed. In one configuration, the flow control member (106) defines a regulation channel (166) in fluid communication with a lumen of a cannula (112), wherein the flow control member (106) is configured to adjustably alter an effective flow distance between the lumen of the cannula (112) and an interior of an evacuated collection container. In another configuration, the flow control member (106) is positioned to vary an effective cross-sectional area of at least one of an inlet port (346) and an outlet port (350) adapted to be in fluid communication with the lumen and the evacuated collection container.

A medical device useful for collecting samples of a bodily fluid, typically a vascular fluid such as blood. The subject device can also be used for infusing liquids into a patient. The fluid flow path desirably includes a forwardly projecting, rearwardly biased needle, a needle holder and a length of plastic tubing, the forwardly extending end of which is configured to function as a fluid seal to reduce the likelihood of fluid leakage during or after use. Following use, the needle is retractable from the patient by sliding a needle retraction cavity transversely into longitudinal alignment with the needle, thereby disrupting the fluid flow path and propelling the needle rearwardly so that it no longer projects from the device.