Heating device for parenteral fluid

Claim 2

A heating device for parenteral fluid and the like comprising: a. a container adapted to hold a quantity of liquid, b. an independent coil of tubing removably mounted within the container, the coil being adapted to be at least partially immersible in the liquid and spaced from the container to permit substantially free flow of the liquid over the exterior face of the coil, the coil providing a conduit adapted to convey the parenteral fluid through the liquid in heat transfer relation thereto, c. an electrical immersion heating element mounted to the container and disposed therewithin, said element being adapted to heat the liquid, d. thermostatic switching means adapted to be in contact with the liquid, the switching means being connected to the heating element and regulating the heat emission therefrom in response to the temperature of the liquid, and e. aerating means mounted to the container and adapted to supply air below the surface of the liquid whereby to facilitate the circulation thereof, f. the aerating means including: 1. an air pump mounted exteriorly of the container, 2. a substantially upright, open-ended pipe mounted interiorly of the container and including an upper, air bubble escape orifice and a lower liquid intake orifice, and 3. air passage means interconnecting the air pump to the openended pipe intermediate the intake and escape orifices, and g. the heating element including a heating portion disposed below the escape orifice and in the immediate vicinity of the intake orifice whereby heated liquid is drawn upwardly through the pipe.

Claim 3

a substantially upright, open-ended pipe mounted interiorly of the container and including an upper, air bubble escape orifice and a lower liquid intake orifice, and

Claim 4

a substantially upright, open-ended pipe mounted interiorly of the container and including an upper, air bubble escape orifice and a lower liquid intake orifice, and

Claim 5

a substantially upright, open-ended pipe mounted interiorly of the container, the lower end being spaced from the bottom wall, and

Claim 6

a substantially upright, open-ended pipe mounted interiorly of the container, the lower end being spaced from the bottom wall, and

Claim 7

A device as defined in claim 1, in which: h. the open-ended pipe provides a housing for the heating element.

Claim 8

a substantially upright, open-ended pipe mounted interiorly of the container and including an upper, air bubble escape orifice, and a lower liquid intake orifice, and

Claim 9

a substantially upright, open-ended pipe mounted interiorly of the container and including an upper, air bubble escape orifice, and a lower liquid intake orifice, and

Claim 10

air passage means extending substantially between the air pump and the open-ended pipe and delivering air into the open-ended pipe below the escape orifice to facilitate the flow of liquid through the pipe from the intake orifice to the escape orifice, and g. the heating element including a heating portion disposed below the escape orifice and in the immediate vicinity of the intake orifice whereby heated liquid is drawn upwardly through the pipe.

Claim 11

air passage means extending substantially between the air pump and the open-ended pipe and delivering air into the open-ended pipe below the escape orifice to facilitate the flow of liquid through the pipe from the intake orifice to the escape orifice, and g. the heating element including a heating portion disposed below the escape orifice and in the immediate vicinity of the intake orifice whereby heated liquid is drawn upwardly through the pipe.

Claim 12

A heating device for parenteral fluid and the like comprising: a. a container adapted to hold a quantity of liquid, b. an independent coil of tubing removably mounted within the container, the coil being adapted to be at least partially immersible in the liquid and spaced from the container to permit substantially free flow of the liquid over the exterior face of the coil, the coil providing a conduit adapted to convey the parenTeral fluid through the liquid in heat transfer relation thereto, c. an electrical immersion heating element mounted to the container and disposed therewithin, said element being adapted to heat the liquid, d. thermostatic switching means adapted to be in contact with the liquid, the switching means being connected to the heating element and regulating the heat emission therefrom in response to the temperature of the liquid, e. adjacent coil turns being fused to form a disposable coil envelope, f. an independent, unattached and substantially rigid support frame removably mounted in the container and receiving the coil envelope thereabout in slidably separable relation, whereby the support frame may be withdrawn from the container to facilitate disposal and replacement of the coil envelope, g. the support frame including extension means projecting outwardly of the coil, and h. the container including an upper margin defining an open end and seating means adapted to engage the extension means below the upper margin whereby to hold the coil in suspended relation in the liquid the open end affording access to the coil within the container.

Claim 13

A heating device for parenteral fluid and the like comprising: a. a container adapted to hold a quantity of liquid, b. an independent coil of tubing removably mounted within the container, the coil being adapted to be at least partially immersible in the liquid and spaced from the container to permit substantially free flow of the liquid over the exterior face of the coil, the coil providing a conduit adapted to convey the parenTeral fluid through the liquid in heat transfer relation thereto, c. an electrical immersion heating element mounted to the container and disposed therewithin, said element being adapted to heat the liquid, d. thermostatic switching means adapted to be in contact with the liquid, the switching means being connected to the heating element and regulating the heat emission therefrom in response to the temperature of the liquid, e. adjacent coil turns being fused to form a disposable coil envelope, f. an independent, unattached and substantially rigid support frame removably mounted in the container and receiving the coil envelope thereabout in slidably separable relation, whereby the support frame may be withdrawn from the container to facilitate disposal and replacement of the coil envelope, g. the support frame including extension means projecting outwardly of the coil, and h. the container including an upper margin defining an open end and seating means adapted to engage the extension means below the upper margin whereby to hold the coil in suspended relation in the liquid the open end affording access to the coil within the container.

Claim 14

passage means interconnecting the air pump to the open-ended pipe between the ends of said pipe, and i. the heating element being disposed adjacently of the lower end of the open-ended pipe whereby heated liquid is drawn upwardly through said pipe.

Claim 15

passage means interconnecting the air pump to the open-ended pipe between the ends of said pipe, and i. the heating element being disposed adjacently of the lower end of the open-ended pipe whereby heated liquid is drawn upwardly through said pipe.

Claim 16

air passage means interconnecting the air pump to the open-ended pipe intermediate the intake and escape orifices, and g. the heating element including a heating portion disposed below the escape orifice and in the immediate vicinity of the intake orifice whereby heated liquid is drawn upwardly through the pipe.

Claim 17

air passage means interconnecting the air pump to the open-ended pipe intermediate the intake and escape orifices, and g. the heating element including a heating portion disposed below the escape orifice and in the immediate vicinity of the intake orifice whereby heated liquid is drawn upwardly through the pipe.

Claim 18

A heating device for parenteral fluid and the like comprising: a. a container adapted to hold a quantity of liquid, b. an independent coil of tubing removably mounted within the container, the coil being adapted to be at least partially immersible in the liquid and spaced from the container to permit substantially free flow of the liquid over the exterior face of the coil, the coil providing a conduit adapted to convey the parenteral fluid through the liquid in heat transfer relation thereto, c. an electrical immersion heating element mounted to the container and disposed therewithin, said element being adapted to heat the liquid, d. thermostatic switching means adapted to be in contact with the liquid, the switching means being connected to the heating element and regulating the heat emission therefrom in response to the temperature of the liquid, e. the container including a substantially cylindrical sidewall defining an opening means at the upper end and a bottom wall, f. the coil being of flexible plastic material and including entrance and exit portions received by the opening means and adjacent coil turns being fused to form a disposable coil envelope coaxial with the container; and g. a support frame providing a substantially rigid drum having opposed ends one of which is carried by the container and the other of which is substantially free of transverse projections to permit the disposable coil to be slidingly withdrawn directly from the drum.

Claim 19

A heating device for parenteral fluid and the like comprising: a. a container adapted to hold a quantity of liquid, b. an independent coil of tubing removably mounted within the container, the coil being adapted to be at least partially immersible in the liquid and spaced from the container to permit substantially free flow of the liquid over the exterior face of the coil, the coil providing a conduit adapted to convey the parenteral fluid through the liquid in heat transfer relation thereto, c. an electrical immersion heating element mounted to the container and disposed therewithin, said element being adapted to heat the liquid, d. thermostatic switching means adapted to be in contact with the liquid, the switching means being connected to the heating element and regulating the heat emission therefrom in response to the temperature of the liquid, e. the container including a substantially cylindrical sidewall defining an opening means at the upper end and a bottom wall, f. the coil being of flexible plastic material and including entrance and exit portions received by the opening means and adjacent coil turns being fused to form a disposable coil envelope coaxial with the container; and g. a support frame providing a substantially rigid drum having opposed ends one of which is carried by the container and the other of which is substantially free of transverse projections to permit the disposable coil to be slidingly withdrawn directly from the drum.

Claim 20

A heating device for parenteral fluid and the like comprising: a. a container adapted to hold a quantity of liquid, b. an independent coil of tubing removably mounted within the container, the coil being adapted to be at least partially immersible in the liquid and spaced from the container to permit substantially free flow of the liquid over the exterior face of the coil, the coil providing a conduit adapted to convey the parenteral fluid through the liquid in heat transfer relation thereto, c. an electrical immersion heating element mounted to the container and disposed therewithin, said element being adapted to heat the liquid, d. thermostatic switching means adapted to be in contact with the liquid, the switching means being connected to the heating element and regulating the heat emission therefrom in response to the temperature of the liquid, e. the container including a substantially cylindrical sidewall defining an opening means at the upper end and a bottom wall, f. the coil including entrance and exit portions received by the opening means and adjacent coil turns being fused to form a disposable coil envelope coaxial with the container, g. an independent support frame removably mounted in the container and providing a substantially rigid drum receiving the coil envelope in sepArable relation, the support frame being adapted to hold the coil in suspended relation in the liquid, h. aerating means mounted to the container and adapted to supply air below the surface of the liquid whereby to facilitate circulation thereof, the aerating means including:

Claim 21

A heating device for parenteral fluid and the like comprising: a. a container adapted to hold a quantity of liquid, b. an independent coil of tubing removably mounted within the container, the coil being adapted to be at least partially immersible in the liquid and spaced from the container to permit substantially free flow of the liquid over the exterior face of the coil, the coil providing a conduit adapted to convey the parenteral fluid through the liquid in heat transfer relation thereto, c. an electrical immersion heating element mounted to the container and disposed therewithin, said element being adapted to heat the liquid, d. thermostatic switching means adapted to be in contact with the liquid, the switching means being connected to the heating element and regulating the heat emission therefrom in response to the temperature of the liquid, e. the container including a substantially cylindrical sidewall defining an opening means at the upper end and a bottom wall, f. the coil including entrance and exit portions received by the opening means and adjacent coil turns being fused to form a disposable coil envelope coaxial with the container, g. an independent support frame removably mounted in the container and providing a substantially rigid drum receiving the coil envelope in sepArable relation, the support frame being adapted to hold the coil in suspended relation in the liquid, h. aerating means mounted to the container and adapted to supply air below the surface of the liquid whereby to facilitate circulation thereof, the aerating means including:

Claim 22

A heating device for parenteral fluid and the like comprising: a. a container adapted to hold a quantity of liquid, b. an independent coil of tubing removably mounted within the container, the coil being adapted to be at least partially immersible in the liquid and spaced from the container to permit substantially free flow of the liquid over the exterior face of the coil, the coil providing a conduit adapted to convey the parenteral fluid through the liquid in heat transfer relation thereto, c. an electrical immersion heating element mounted to the container and disposed therewithin, said element being adapted to heat the liquid, d. thermostatic switching means adapted to be in contact with the liquid, the switching means being connected to the heating element and regulating the heat emission therefrom in response to the temperature of the liquid, e. aerating means mounted to the container and adapted to supply air below the surface of the liquid whereby to facilitate the circulation thereof, f. the aerating means including:

Claim 23

A heating device for parenteral fluid and the like comprising: a. a container adapted to hold a quantity of liquid, b. an independent coil of tubing removably mounted within the container, the coil being adapted to be at least partially immersible in the liquid and spaced from the container to permit substantially free flow of the liquid over the exterior face of the coil, the coil providing a conduit adapted to convey the parenteral fluid through the liquid in heat transfer relation thereto, c. an electrical immersion heating element mounted to the container and disposed therewithin, said element being adapted to heat the liquid, d. thermostatic switching means adapted to be in contact with the liquid, the switching means being connected to the heating element and regulating the heat emission therefrom in response to the temperature of the liquid, e. aerating means mounted to the container and adapted to supply air below the surface of the liquid whereby to facilitate the circulation thereof, f. the aerating means including: