Thermal pack for therapeutic treatment and insert therefor

A thermal pack for therapeutic treatment of a mammal, the pack comprising:

• a flexible, heat conductive liquid impermeable bladder and
• a separator,
• the bladder comprising an inlet, an outlet, and a pair of superposed sheets secured together so as to provide a fluid passageway having a turn therein,
• the separator comprising a length and a lateral width and a fluid conveying track, the separator being received within the fluid passageway and extending along its length and throughout the fluid passageway substantially from the inlet to the outlet to maintain the superposed sheets in spaced apart relationship at least in the vicinity of the track to mitigate restrictions in the fluid flow through the passageway when the pack is flexed, in use, out of the plane of the superposed sheets, the separator comprising a strip of flexible material having a base and a plurality of ribs upstanding perpendicularly from the base to describe therebetween the fluid conveying track,
• wherein two or more of the ribs are spaced from one another in a fluid flow direction and at least one of the ribs is arcuate in form and curves in a direction opposite to the turn such that a part thereof extends in a lateral direction so as to deflect fluid flow out of the fluid conveying track and into the fluid passageway along one of the turns of the fluid passageway.

A thermal pack for therapeutic treatment of a mammal, the pack comprising:

• a flexible, heat conductive liquid impermeable bladder and
• a separator,
• the bladder comprising an inlet, an outlet, and a pair of superposed sheets secured together so as to provide a fluid passageway having a turn therein,
• the separator comprising a length and a lateral width and a fluid conveying track, the separator being received within the fluid passageway and extending along its length and throughout the fluid passageway substantially from the inlet to the outlet to maintain the superposed sheets in spaced apart relationship at least in the vicinity of the track to mitigate restrictions in the fluid flow through the passageway when the pack is flexed, in use, out of the plane of the superposed sheets, the separator comprising a strip of flexible material having a base and a plurality of ribs upstanding perpendicularly from the base to describe therebetween the fluid conveying track, two or more of the ribs being spaced from one another in a fluid flow direction,
• wherein the plurality of ribs comprises a central rib extending along the separator and at least one of the ribs is a cross-rib extending perpendicularly from the central rib so as to extend in a lateral direction to deflect fluid flow out of the fluid conveying track and into the fluid passageway along one of the turns of the fluid passageway.