A needle system includes a handle, a needle slider partially positioned in the handle, and a needle connected to and extending away from the needle slider. A restrictor is disposed in the needle. The restrictor is configured to inhibit passage of a sample through the needle slider.

A needle system a handle and a needle slider partially positioned in the handle. The needle slider has an aspiration port at a proximal end of the needle slider. A needle connected to and extending away from the needle slider. A restrictor is disposed in the aspiration port of the needle slider. The restrictor is configured to inhibit passage of a sample through the aspiration port.

Apparatus for the application of topical negative pressure therapy to a wound site is described, the apparatus comprising: a wound contacting element for retaining wound exudate fluid therein; a wound covering element that provides a substantially airtight seal over the wound contacting element and wound site; a vacuum connection tube connecting a wound cavity to a vacuum source; and a vacuum source connected to a distal end of the vacuum connection tube.

A manifold apparatus and method of opening a valve in a medical/surgical waste collection unit. The manifold includes a base at a proximal end with the base defining an opening off center from an axis of the manifold. The manifold further includes two arcuately spaced tabs, each subtending arcs having different arcuate lengths. The manifold is positioned such that the tabs mate with at least two slots of a lock ring of the waste collection unit so as to cause the opening of the manifold to be, upon insertion into a bore of the waste collection unit, in a specific rotational alignment in the bore. The manifold is rotated within the bore to cause a valve disk to move between a first position in which the valve disk blocks fluid flow through the receiver and a second position in which the valve disk allows fluid flow through the receiver.

The present efficient support portable constant negative pressure suction apparatus for outdoor use includes: a negative pressure suction ball extending from the proximal end to the distal end, the negative pressure suction ball being provided with an internal sac structure; the internal sac structure includes: a round gas exhaust valve, a spherical sac, and an anti-reverse flow flap arranged in sequence from the proximal end to the distal end; and also including: a negative pressure suction tube, the negative pressure suction tube being in communication with the negative pressure suction ball and the negative pressure suction tube being provided with a suction control channel.

A reduced pressure dressing for applying reduced pressure treatment to a tissue site includes an interface layer adapted to be positioned at the tissue site. An absorbent layer is in fluid communication with the interface layer to absorb liquid from at least one of the interface layer and the tissue site. A pump is in fluid communication with the absorbent layer to deliver a reduced pressure to the tissue site. A cover is positioned over the pump, the absorbent layer, and the interface layer to maintain the reduced pressure at the tissue site, and a liquid-air separator is positioned between the absorbent layer and the pump to inhibit liquid from entering the pump.

A reduced-pressure canister includes a canister body having a fluid reservoir, an inlet for receiving fluids from a patient, and an integral hydrophobic filter formed within a side or top portion of the canister body. The integral hydrophobic filter has a plurality of pores in the canister body that are covered by a hydrophobic coating. Other canisters, methods, and systems are also presented.

A manifold for connection to a waste collection vacuum device. The manifold includes suction port tubes and a vacuum port that define interconnected fluid communication pathways such that no walls define proximal and distal ends of the manifold. Tabs are coupled to at least one of the interconnected fluid communication pathways. The tabs interface with keyed surfaces of the waste collection vacuum device so as to facilitate positive location and mechanical fixation with the waste collection vacuum device. The manifold may include a body, and a flow director may be disposed within the body. A filter element may also be disposed within the body and include a distal section having a cross-sectional area less than a cross-sectional area of a proximal section. Each of the distal and proximal sections may define apertures configured to trap liquid, semi-solid, or solid waste within the fluid path.

The present invention relates to a system comprising a flexible bag (8) for storing the drained secretion with an anti-collapse device (9), being connected on one side to a “T” valve (10) which is provided with protective lid (21) and, on the other side, to the flow control backflow preventer valve (1) consisting of a one-piece circular core (2) of elastomeric material which is secured to the housing (3), said core (2) containing a central plug (4) connected by radial rods (5) to the borderline (6) of the circular body thereof, so that said core (2) is used in two-way housings, an inlet (7) and an outlet (7′), said valve (1) composed of a one-way valve. Said system further comprising within the housing (3) a clot fractioning device (25) at the inlet and an anti-clogging device (26) from the maximum opening point of the core (2).

Systems, apparatuses, and methods for instilling fluid to a tissue site in a negative-pressure therapy environment are described. Illustrative embodiments may include a pneumatically-actuated instillation pump that can draw a solution from a solution source during a negative-pressure interval, and instill the solution to a dressing during a venting interval. A pneumatic actuator may be mechanically coupled to a disposable distribution system that can provide a fluid path between the solution source and a distribution component. A bacterial filter may be disposed in the fluid path between the actuator and the distribution component to prevent contamination of the actuator during operation. The distribution system may be separated from the actuator and disposed of after operation, and the actuator may be re-used.