Pinch clamps are provided which generate positive displacement while also preventing rebound. To prevent rebound while providing positive displacement, the upper and lower clamping surfaces may be configured to form a pinch profile along which the tubing is compressed with the pinch point being formed at the distal end of the pinch profile. To further prevent rebound, the lower arm of the pinch clamp can include blocking ribs that interface with the upper clamping surface to prevent distal travelling of the pinch point even if the upper arm is forced into an over-engaged position.

A color-coded roller clamp apparatus for easily clamping an IV tube includes a clamp housing having a clamp inside. A top aperture and a roller slot extend through to the clamp inside. The clamp housing is configured to receive an IV tube passing through the top aperture and out a bottom. A roller is coupled to the clamp housing and comprises a wheel partially extending through the roller slot. A first hemisphere and a second are a first color and a second color, respectively. An axle is coupled to the wheel within the clamp. The roller is rollingly moveable between a disengaged position alternative engaged. The wheel in the disengaged position exposes the first hemisphere through the roller slot and the wheel in the engaged position exposes the second hemisphere through the roller slot and is configured to clamp the IV tube against the back side to prevent flow.

Pinch clamps are provided which generate positive displacement while also preventing rebound. To prevent rebound while providing positive displacement, the upper and lower clamping surfaces may be configured to form a pinch profile along which the tubing is compressed with the pinch point being formed at the distal end of the pinch profile. To further prevent rebound, the lower arm of the pinch clamp can include blocking ribs that interface with the upper clamping surface to prevent distal travelling of the pinch point even if the upper arm is forced into an over-engaged position.

A multi-tubing intravenous (IV) extension set may include an outlet tubing fluidly coupled to a primary multi-tubing connector at one end and fluidly coupled to a vascular device at an opposite end, and a primary inlet tubing having a proximal end with an adapter for connection to a syringe containing a priming or a medicinal fluid, and a distal end coupled to the primary multi-tubing connector. The IV extension set may further include at least one secondary inlet tubing with a proximal end having an adapter for receiving a medicinal fluid and a distal end selectively fluidly coupled to the primary multi-tubing connector. A slide clamp may be positioned on the outlet tubing to restrict flow between the proximal and distal ends of the outlet tubing and cause priming fluid flowing into the outlet tubing via the multi-tubing connector to reverse direction into the at least one secondary inlet tubing.

A roller clamp assembly for adjusting the fluid flow rate in a connector tube of an infusion set is provided. The roller clamp assembly includes a housing to receive the connector tube, a plate slideably engaged with the housing and configured to rapidly compress the connector tube to provide a coarse fluid flow adjustment, and a roller wheel moveable engaged with the housing and configured to provide a gradual fluid flow adjustment. The plate may be a slide plate received by grooves in an exterior wall of the housing and that moves orthogonally to the connector tube, or the plate may be a shim plate that moves along an interior wall of the housing in parallel to the connector tube. Infusion sets and methods of adjusting fluid flow rates are also provided.

A color-coded roller clamp apparatus for easily clamping an IV tube includes a clamp housing having a clamp inside. A top aperture and a roller slot extend through to the clamp inside. The clamp housing is configured to receive an IV tube passing through the top aperture and out a bottom. A roller is coupled to the clamp housing and comprises a wheel partially extending through the roller slot. A first hemisphere and a second are a first color and a second color, respectively. An axle is coupled to the wheel within the clamp. The roller is rollingly moveable between a disengaged position alternative engaged. The wheel in the disengaged position exposes the first hemisphere through the roller slot and the wheel in the engaged position exposes the second hemisphere through the roller slot and is configured to clamp the IV tube against the back side to prevent flow.

An intravenous (IV) set system comprising a primary IV set having a plurality of access points facilitating access to one or more fluid pathways of the primary IV set, and an IV extension set removably coupled to the primary IV set to form an extended primary IV set, the IV extension set comprising an extension flow line defining an extension flow path, and a plurality of access ports on the extension flow line, at least two of the access ports comprising access ports located between first and second ends of the IV extension set. The IV set system further comprises a bypass manifold externally and removably coupled to the extension flow line of the IV extension set via the intermediate access ports on the extension flow line, the bypass manifold comprising a bypass flow line adjacent the extension flow line, and one or more access points that facilitate access to the bypass flow line, wherein the bypass manifold and the bypass flow line are operable to provide a bypass flow path through the IV extension so.

A flexible dispensing apparatus for coupling to pressurized fluid containers is described. It includes a flexible tube and a handle assembly. The handle assembly houses a second end of the tube. The handle assembly has a first side connected to a second side, a slide trigger, a roller coupled to the bottom of the slide trigger with a dowel pin, a spray nozzle assembly, a magnet reservoir, and a magnet. The first side has an inclined ramp that runs along a length of the first side and extends into the second side above and beyond a seam that is formed by the connection of the two sides. The tube is within a channel in the handle assembly formed between the inclined ramp and the roller. When the roller is rolled toward the end of the ramp it pinches the flexible tube near the top of the inclined ramp.

A clamp arrangement for retaining a flexible tube (18) during operation of a roller pump (10) for pumping fluid, the clamp arrangement comprising a pair of rotatable bobbins (24A, 24B, 26A, 26B) mounted adjacent to each other. Each bobbin (24A, 24B, 26A, 26B) has a tapered groove (30), formed partially around a cylindrical surface of the bobbin (24A, 24B, 26A, 26B), and counter rotation of the bobbins (24A, 24B, 26A, 26B) clamps the tube 18 between the bobbins (24A, 24B, 26A, 26B) in the tapered grooves (30). The clamp arrangement allows tubes of different shapes and diameters to be securely held without overly deforming the tube.

A laryngeal mask airway device includes a flexible tube set and an annular mask. The flexible tube set has an airway tube and an air guide tube that are juxtaposed. The annular mask has an outer membrane surrounding an outer periphery of one end of the airway tube and an elastic filler disposed inside the outer membrane. The outer membrane is in communication with one end of the air guide tube. When in use, the outer membrane is first squeezed to compress the elastic filler, and then the other end of the air guide tube is closed. The inside of the outer membrane forms a negative pressure to maintain the elastic filler in a small volume, so that one end having the annular mask of the flexible tube set can be placed and positioned in a patient's throat.