Medical device assemblies capable of aspirating liquid into a syringe barrel or other medical devices while evacuating any air from the syringe are described. An exemplary medical device includes a syringe barrel, plunger rod and stopper assembly having an air permeable and liquid impermeable porous portion and structure for forming a vacuum within either the stopper or the plunger rod. Described is a medical device including a syringe barrel, plunger rod and stopper assembly having an air permeable and liquid impermeable porous portion and structure for forming a vacuum within chamber between the stopper and plunger rod wherein the plunger rod includes a sealing edge and is moveable relative to the stopper. Exemplary medical devices may include a vent for allowing air that permeates through the porous portion to escape to atmosphere. Methods for aspirating a syringe barrel with a liquid are also provided.

A cannula having a coupling force and fixing force between an expansion part and a needle is provided. The needle is formed in a cylinder shape having a predetermined length, and includes a coupling means, which is formed at the outer surface thereof, and is inserted into the expansion part such that the coupling force can increase by the friction with the expansion part during adhesion, wherein the coupling means includes: a groove part formed, in an insertion region of the needle inserted into the expansion part, by the melting of the outer surface of the needle through laser machining so as to have a predetermined depth; and a protrusion part protruding in the outward direction of the needle so as to be connected to the groove part.

A lancing device including a latch that pivots between a non-blocking position allowing a lancet carrier and a lancet to advance and retract through a first forward and reverse lancing stroke and a blocking position preventing further/excess/secondary oscillation of the lancet carrier and lancet. The pivotal latch can pivot about an axis perpendicular (e.g., for an L-shaped latch) or parallel/coaxial (e.g., for a sleeve latch) to the advancement and retraction motion of the lancet carrier and lancet.

This disclosure concerns a sampling device and a system for collecting body fluid, comprising a metal lancing unit having a distal tip suitable for piercing skin and a capillary channel extending between the tip and a proximal section of the lancing unit for collecting body fluid; and further comprising a plastic holding unit affixed to the lancing unit for manipulating the lancing unit in order to form an incision in the skin, wherein the holding unit contains a sorbent adapted for sorption of moisture and/or volatile substances to protect the sampling device from degradation prior to use.

Devices are provided to automatically inject drugs or other payloads into or beneath skin. These devices include an injector configured to drive a hollow needle into the skin and subsequently to deliver the payload through the hollow needle. Applied suction acts to draw blood from the puncture formed in the skin through the hollow needle, into the device, and to a sensor, blood storage element, or other payload. In some examples, the blood is drawn through the hollow needle when the hollow needle is penetrating the skin. In some examples, these devices are additionally configured to retract the hollow needle from the skin and/or to perform some other functions. These devices can be wearable and configured to automatically access blood or deliver a payload into skin, for example, to operate at one or more points in time while a wearer of a device is sleeping.

A method is disclosed for the mask-etching of a piercing element having an elongate shaft, a distally protruding tip, a proximal holding part, and a laterally open collecting channel that collects bodily fluid and extends along the shaft as far as the area of the tip, wherein a side of a double-sided etching mask is applied respectively to the two sides of a substrate and, under the action of an etching agent, the piercing element is formed as a part made by chemical blanking, wherein a channel side of the etching mask is provided with a channel etching slit for unilateral etching of the collecting channel.

There are provided a blood-collecting device by which a blood-collecting operation can be performed by single hand and the blood can be collected in a short time without a risk of hemolysis, and a blood-collecting tube usable for blood-collecting device. A blood-collecting tube, of which a tip portion is housed in a tube holding portion and which accommodates the blood coming out of a base end side of a needle tube, includes a tube structure opened at both ends, and a tube attached to the tube structure. A tip portion of the tube structure is housed in a hollow portion of a tube holding portion of a needle base. The tube preferably has elasticity. The tube is attached to the tube structure using elastic deformation of the tube, allowing the tube to be in close contact with an inner circumferential surface of the needle base.

Embodiments disclosed herein are generally directed to blood flash detection systems and methods thereof. Embodiments include an indicator device including a needle and needle hub, defining a lumen and in fluid communication with a medical line. The needle hub includes a marker, such as an RFID tag, with electrodes extending to the lumen. When a fluid flow, for example blood, enters the lumen, an electrical connection between the electrodes is bridged, completing the circuit and activating the marker. The marker can then be responsive to an interrogation signal, and can provide a response signal. The response signal can be detected and interpreted by a detection device that indicates to a user that the vasculature has been accessed without the user directly observing the insertion site or the device.

A syringe assembly includes (i) a syringe with a cylindrical body, luer tip at a first end, finger grip at a second end and a cannula extending from the luer tip into the cylindrical body, and (ii) a plunger unit having an adapter portion, receiving cavity, finger grip and piston. A channel extends the length of the adapter portion to receive the cannula in one end and a variety of connectors, valves and/or syringes in a second end. The end of the channel accessible in the receiving cavity mates with or engages any number of commercially available valves, connectors and/or syringes while the luer tip similarly connects to any number of valves, catheters, connectors, etc., depending on the task being undertaken with the syringe assembly.

An improved disposable puncture depth adjustable safety lancet includes a shell, a lancet core, a spring, and a trigger. The shell has an adjusting ring at a front end thereof to adjust a puncture depth, the adjusting ring being sleeved and clearance-fit at an outside of the trigger head. The adjusting ring and the shell are rotationally connected in a peripheral direction and are fixedly connected in an axial direction, and a rotational locating structure is formed by the adjusting ring and the shell in the peripheral direction. The adjusting ring has an inner wall equipped with a rotating step face or rotating bevel, and rotating the adjusting ring locates the adjusting ring in different locating positions. The rotating step face or rotating bevel is configured to meet the collision face of the lancet core in different axial positions, thereby changing the puncture depth of needle tip.