An article (100) comprising at least one microneedle (160) is provided. The article comprises a first side (112) and a second side (114) opposite the first side. The first side comprises a central cavity portion (120) and a platform portion (130), with at least one microneedle extending therefrom, wherein the platform portion is not coplanar with the central cavity portion. The platform portion substantially surrounds the central cavity portion. The at least one microneedle comprises a body comprising an outer surface (163); a base segment (166) having a base (162) and a first shape; a tip segment (168) having a tip and a second shape, wherein the second shape is distinct from the first shape; a transition plane (167) that delineates the base segment and the tip segment; and a central axis (180). Methods of using the article are also provided.

A medical device configured as a tube holder for use in collecting bodily fluids, especially for use as a blood collection tube holder, the device embodying two coaxially alignable needles, the first needle being a forwardly facing fluid collection needle and the second needle being a rearwardly facing fluid discharge needle. The first and second needles are satisfactorily supported by a frontal attachment and body, respectively, that are disposed in relative sliding engagement along an interface that is transverse to the first and second needle and that extends at least from the second needle to an opening into a needle retraction chamber that projects rearwardly from the body.

Peripheral intravenous catheter assemblies with capabilities for both blood sampling and catheterization can have a blood collection holder with a needle hub attached to a catheter hub. The combination catheter assembly and blood sampling holder can be called a catheter and holder assembly. Blood sampling can be done directly through the needle and the blood collection holder after cannulation. After blood sampling, the blood collection holder and the needle can be removed, leaving the catheter hub with the patient for IV infusion. The catheter hub can be a straight catheter hub or can include a side fluid port for use in as an integrated IVC.

A retractable needle assembly includes a housing having a sidewall defining a hollow bore, and an elongate plunger, the distal end of the plunger forming a reservoir within the hollow bore for containing a fluid therein. The plunger is adapted for slideable movement within the hollow bore. The assembly includes a hub disposed within the hollow bore and at least partially supporting a cannula therewith, and a needle retraction member engaged with the hub for manually selectable advancement with respect to a portion of the housing. The needle retraction member may be advanced from an initial position in which at least a portion of the needle is disposed outside the housing, to a retracted position in which the needle is fully surrounded by the housing. The elongate plunger may be advanced about the hub for extracting the fluid into the reservoir or expelling the fluid from the reservoir.

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 needle assembly, such as a catheter assembly, having a needle shaft with a needle tip formed from a first rigid material for puncturing a subject. The shaft section, proximal of the needle tip can be formed from a second material different from the first material. The needle tip is attached to the needle shaft to form the needle. The first material can have higher rigidity than the second material and the needle can project through a catheter tube and used in a catheter assembly.

The present invention discloses a push-type safety protection mechanism of a blood collection needle. The push-type safety protection mechanism comprises a sleeve member and a valve core member, wherein the valve core member is provided with three parts, namely a needle seat part, a sleeving part and a stopping part; a plurality of limiting grooves is formed in the stopping part; the sleeve member is provided with two parts, namely a first sleeve part positioned at a front section and a second sleeve part positioned at a rear section; an elastic button higher than the side wall of the first sleeve part is arranged on the side wall of the valve core member; a limiting opening matched with the elastic button is formed in the side wall of the first sleeve part; a limiting sliding cavity for accommodating the elastic button and the valve core member is formed from a position of the first sleeve part from the limiting opening to the inner side of the second sleeve part, and the limiting sliding cavity guides and limits front-back movements of the elastic button and the valve core member; and a plurality of elastic limiting protrusions matched with the limiting grooves is arranged on the inner wall of the tail sliding cavity of the second sleeve part. Through the design of the elastic button, medical staff can operate the blood collection needle with the left hand or the right hand alone during use.

A collection device (10) which directs a flow of blood into a container (14) and provides a controlled blood flow path that ensures blood flow from a collection site to a collection container is disclosed.

A retractable needle assembly includes a housing having a sidewall defining a hollow bore, and an elongate plunger, the distal end of the plunger forming a reservoir within the hollow bore for containing a fluid therein. The plunger is adapted for slideable movement within the hollow bore. The assembly includes a hub disposed within the hollow bore and at least partially supporting a cannula therewith, and a needle retraction member engaged with the hub for manually selectable advancement with respect to a portion of the housing. The needle retraction member may be advanced from an initial position in which at least a portion of the needle is disposed outside the housing, to a retracted position in which the needle is fully surrounded by the housing. The elongate plunger may be advanced about the hub for extracting the fluid into the reservoir or expelling the fluid from the reservoir.

A device for obtaining a biological sample, such as a capillary blood collection device, that has the ability to lance and squeeze the finger, collect the sample, stabilize the sample, and subsequently dispense the sample in a controlled manner is disclosed. The device also simplifies and streamlines the capillary blood collection by eliminating workflow variabilities which are typically associated with low sample quality including hemolysis and micro-clots.