A spa fixture lighting system assembly includes a wall-fitting nut having a threaded inner circumferential portion and an interior radial seat, and a light source disposed on a light source seat selected from the group consisting of the interior radial seat, an exterior radial sidewall of the wall-fitting nut, or an exterior circumferential sidewall of the wall-fitting nut.

The apparatus according to the invention is adapted for transcutaneous treatment by gas. The apparatus (10) comprises a rigid-wall cabinet (20) and having an upper opening and at least one openable panel, wherein a seat (25) is arranged inside the cabinet (20), and the cabinet (20) comprises at least one gas concentration measurement unit (29a), and the cabinet (20) further comprises a gas inlet (30) for feeding the treatment gas and a gas outlet (31) for discharging the treatment gas; a gas supply unit (40) coupled to the gas inlet (30) of the cabinet (20) via a pipe (41) and through an interposed controllable valve (42); and a gas tank (50) connected to the gas supply unit (40). The apparatus further comprises a ventilation unit (60) connected to the gas outlet (31) of the cabinet (20) through an interposed controllable valve (63), said ventilation unit (60) being coupled via a further pipe (62) to a space (70) hermetically separated from the room containing the cabinet (20), and wherein said ventilation unit (60) is designed so that it can discharge the entire volume of the treatment gas from the inner space of the cabinet (20) within at most 5 seconds. The apparatus further comprises a control unit (80) for receiving the signals of the gas concentration measurement unit (29a) and for controlling operation of the valves (42, 63) and said ventilation unit (60) based on at least the signals of the gas concentration measurement unit (29a).

Devices, systems, and methods described herein can provide a simulated fluid environment similar to the mother's womb to recreate an ideal or more familiar environment for infants who are born before their ideal due date. In some embodiments, the premature infant amniotic bath incubator can comprise an incubating tank with synthetic or simulated amniotic fluid, a heating element(s), a temperature sensor(s), and/or thermostat(s) for temperature regulation.

An air passageway system (100) includes an annular air delivery passageway (132), a linear air delivery passageway (112b), and one or more air injection passageways (134a-1341, 116). The annular air delivery passageway (132), the linear air delivery passageway (112b), and the one or more air injection passageways (134a-1341, 116) are constructed from flexible polyvinyl chloride walls.

A system for supporting the structure of a spa may include vertical supports, channel brackets that mate with vertical supports, and exterior brackets that mate with the channel brackets to hold spa exterior panels in place. The vertical supports may be formed of a first portion and a second portion, the first portion and second portion formed of contiguous hexagons having one open side. The first portion may be open on a first side, with the second portion open on a second side. The open sides of the hexagons may create a space or pocket to allow for additional structures, such as brackets, to mate with the hexagons of the vertical support. A channel bracket may include a hexagonal boss to mate with a vertical support, as well as a channel for receiving a projection of an exterior bracket to hold a spa side panel in place.

A system for supporting a spa shell may include a structural support paddle. The paddle may include a base portion and a paddle portion, connected to each other through an articulating joint such as a ball-and-socket. The top side of the paddle portion may include one or more pieces of cushioning material, such as EPF foam. The structural paddle assembly may be placed between the base of the spa and the spa shell. Typically 5 or more paddle assemblies are place in a spa for support, such as in the lowest areas of the spa shell and/or concavities, or convexities, of the spa shell. Compared to typical large blocks of foam used to support a spa shell from beneath, the structural support paddles provided increased room below the spa shell for ease of maintenance and installation, and more directly controlled support.

Various apparatus and methods for providing emergency washing including means for discouraging tampering of the various valves.

A bathtub assembly includes a bathtub shell containing a volume of liquid, a circulation system in communication with the shell for creating a flow of liquid to and from the shell, and a dispenser assembly for introducing a substance into a portion of the flow of liquid into the bathtub shell. A control panel is rotatably mounted on an upper rim of the bathtub shell proximate to an inlet to the dispenser assembly and rotates to alternately cover or expose the inlet. A plurality of directed flow jets are connected to the bathtub shell for conveying the flow of liquid into the shell to create a directed flow of liquid within the bathtub shell.

Modular infrared heater units for a sauna and methods for constructing a sauna. The infrared heater units include one or more heating elements disposed in a housing. The housing is configured for direct mounting on walls of a structure and includes a pigtail for coupling to a controller. The housing is dimensioned to accommodate a paneling or other cladding on the walls and includes a trim frame that obscures edges of the cladding adjacent to the heater unit. Construction of a sauna unit includes mounting of a plurality of the heater units on walls of the structure; electrically communicably coupling the heater units to a controller; and providing any desired cladding to the interior of the structure.

Devices, systems, and methods described herein can provide a simulated fluid environment similar to the mother's womb to recreate an ideal or more familiar environment for infants who are born before their ideal due date. In some embodiments, the premature infant amniotic bath incubator can comprise an incubating tank with synthetic or simulated amniotic fluid, a heating element(s), a temperature sensor(s), and/or thermostat(s) for temperature regulation.