Six-way stopcock
AssigneeArbrook, Inc.
InventorsRobert Lee Fuson, Wesley S. Larson
Life of this patent
Estimating the term…
Abstract
A selection valve, creating a minimal flow-through turbulence for use in the administration of three separately supplied intravenous fluids, for selecting with one-handed operation any one of the fluids connected or a mixture of any two fluids adjacently connected, is provided having a body with a cylindrically shaped cavity containing three closely positioned ports and a separately positioned port. A cylindrically shaped rotor may be disposed within the cavity and rotated to position a single passageway part thereof between the outlet and an inlet port. The outlet end of the passageway may be shaped to enable the exposure of the outlet port for any inlet port position. Preferably the valve body is mounted to a support structure which in turn may be secured to an immobile surface.
Claims16
A selection valve for use in the administration of intravenous fluids comprising:
- a body having a cylindrically shaped cavity, said body including at least three inlet ports and an outlet port extending through its cylinder wall;
- and
- means disposed within said body cavity for selectively connecting any one of said inlet ports with said outlet port, for selectively connecting any two adjacent inlet ports with said outlet port and for selectively closing off, simultaneously, all said inlet ports.
In a selection valve for use in the administration of intravenous fluids including a body having a cylindrically-shaped cavity, said body having at least three inlet ports and an outlet port extending through its cylindrical wall and means disposed within said body cavity for selectively connecting any one of said inlet ports with said outlet port, for selectively connecting any two adjacent inlet ports with said outlet port and for selectively closing off, simultaneously, all said inlet ports;
- the improvement comprising:
- an annular groove positioned in the cylindrical wall of said body cavity between said inlet and outlet ports and the top of said cavity;
- and
- wherein said selective connecting means includes:
- a cylindrically-shaped rotor gate, said rotor gate being insertable, with a tight fit, in the cylindrical cavity of said body, and having a protruding annular ring seating into said body's annular groove when said rotor is in position, said rotor also having a transverse rectangular passageway with one opening being at most 30.degree. of circumferential arc and the other opening being at most 60.degree. of circumferential arc;
- and
- a circular operator's knob attached to said annular ring end of said rotor, said knob being circumferentially bossed and having a serrated finger protruding in alignment with the passageway of said rotor.
In a selection valve for use in the administration of intravenous fluids, said valve including a body portion having input and output ports, and a movable gate portion cooperating with said body, said gate having a transverse passageway and an operating knob protruding away from said body, the improvement comprising:
- a support plate connected to said body portion;
- a skirt extending normally from said plate away from said gate operating knob a distance greater than the body portion, said skirt being located at a periphery spaced from said body portion;
- a plurality of connection tubes attached one each to each of said body input and output and to said support plate and said skirt, each of said tubes extending beyond said skirt;
- and
- means connected to said skirt for conforming to the surface shape of a mounting object.
Dependencies are inferred from the claim text.