A vascular access device may include a blood circuit having an arterial blood line and a venous blood line. The venous blood line is connected to a first access needle and the arterial blood line is connected to a second access needle. The venous blood line is connected to an access component affixed to the second access needle and configured such that when the second access needle is used to infuse blood into a patient, the access component is positioned to withdraw blood and convey it into the venous line. The withdrawn blood may also be conveyed to an air detector to detect withdrawal of the second access needle.

A device for protecting a user from a sharp tip of a medical needle includes a central body portion, a medical needle having a sharp tip, a pair of wings in attachment to the central body portion, and a hook-and-loop fastening system disposed on at least one of the wings, and configured to selectively attach the wings together with the medical needle positioned between the wings so as to protect a user from the sharp tip of the medical needle. A method of using the device includes withdrawing a sharp tip of a medical needle from a patient, closing a pair of wings with the medical needle positioned between the wings, and fastening the wings together with the medical needle positioned between the wings so as to protect a user from the sharp tip of the medical needle.

There are disclosed devices and methods for protecting a user from a sharp tip of a medical needle. In an embodiment, a device includes a central body portion, a medical needle having a sharp tip, a pair of wings in attachment to the central body portion, and a hook-and-loop fastening system disposed on at least one of the wings, and configured to selectively attach the wings together with the medical needle positioned between the wings so as to protect a user from the sharp tip of the medical needle. In another embodiment, a method includes withdrawing a sharp tip of a medical needle from a patient, closing a pair of wings with the medical needle positioned between the wings, and fastening the wings together with the medical needle positioned between the wings so as to protect a user from the sharp tip of the medical needle.

The disclosed subject matter includes a structure and method for making a dual-lumen needle from single lumen needles to take advantage of the much higher economies of scale. Variations include two needles joined by a flow junction and one needle and a single cannula joined by a flow junction. In addition disclosed are methods of using a dual-lumen needle in a two needle access for blood treatment is disclosed in which at least venous flow is provided through a dual-lumen needle with arterial flow just sufficient to provide air infiltration detection in the event of withdrawal of the dual-lumen needle.

Devices for protecting a user from a sharp tip of a medical needle includes a central body portion, a medical needle having a sharp tip, a pair of wings in attachment to the central body portion. The medical needle includes a longitudinal axis that is substantially perpendicular to at least one of a long axis of the central body portion and the delivery tube. The pair of wings are selectively positionable in a first position in which the pair of wings are spaced apart from the medical needle and a second position in which the pair of wings are proximate the medical needle. A mechanical fastener is disposed on at least one of the pair of wings, the mechanical fastener configured to selectively attach the pair of wings together in the second position with the medical needle positioned therebetween. Methods of using the device including administering medicinal fluids.

There are disclosed devices and methods for protecting a user from a sharp tip of a medical needle. In an embodiment, a device includes a central body portion, a medical needle having a sharp tip, a pair of wings in attachment to the central body portion, and a hook-and-loop fastening system disposed on at least one of the wings, and configured to selectively attach the wings together with the medical needle positioned between the wings so as to protect a user from the sharp tip of the medical needle. In another embodiment, a method includes withdrawing a sharp tip of a medical needle from a patient, closing a pair of wings with the medical needle positioned between the wings, and fastening the wings together with the medical needle positioned between the wings so as to protect a user from the sharp tip of the medical needle.

A safety needle set for delivering fluid to an access port, the safety needle set having insertion and safety configurations. The safety needle set includes a needle assembly and a base assembly. The needle assembly includes a needle having a distal end with a non-coring tip, the distal end angled with respect to a proximal end of the needle. The needle assembly also includes a pair of foldable wings coupled to the needle, including a first wing and a second wing. The first wing may have a recess, and the second wing may have a protrusion, such that when the first wing contacts the second wing in a wing folded configuration, the recess receives the protrusion. The base assembly includes a housing, a safety needle assembly at least partially disposed in an interior of the housing, and an interface pad coupled to a bottom surface of the housing.

The present invention provides a needle unit configured to be mounted to medical syringe, the needle unit including a needle member having a longitudinally extending inner space and having a needle hole formed in a side surface of a front end and an opening formed in a base end, the inner space being in communication with the outside through the needle hole and the opening, a base portion for supporting the base end of the needle member and communicating between the syringe and the inner space of the needle member by being attached to the syringe, a slide member movable along an outer peripheral surface of the needle member and capable of taking a first position to close the needle hole and a second position to uncover the needle hole in the base end portion side of the first position, a biasing member that biases the slide member from the second position side to the first position side; and a cap removably mounted to the base portion and is configured to cover the needle member.

A device for protecting a user from a sharp tip of a medical needle includes a central body portion, a medical needle having a sharp tip, a pair of wings in attachment to the central body portion, and a hook-and-loop fastening system disposed on at least one of the wings, and configured to selectively attach the wings together with the medical needle positioned between the wings so as to protect a user from the sharp tip of the medical needle. A method of using the device includes withdrawing a sharp tip of a medical needle from a patient, closing a pair of wings with the medical needle positioned between the wings, and fastening the wings together with the medical needle positioned between the wings so as to protect a user from the sharp tip of the medical needle.

A needle assembly to prevent fluid/vapor escape so as to reduce or prevent fluid exposure to a clinician during use of the needle assembly. The needle assembly may include a handle portion with a needle extending therefrom, and a base portion releasably coupled to the handle portion. The base portion may include a safety assembly to shield a distal tip of the needle and prevent user contact therewith. The base portion may further include a self-sealing pad covering a bottom external surface thereof. The self-sealing pad may include an upper surface designed to mate with the base portion and a raised portion compressively positioned in the opening of the bottom external surface. The needle assembly may further include a fluid isolation component.