Cold therapy system and cold therapy device

A cold therapy device comprising a cold therapy system and a cold therapy pad connected to the cold therapy system and configured to fit a cold therapy area for cold therapy,

• wherein the cold therapy system comprises a bucket body configured to store cold therapy fluid and a bucket lid, wherein the bucket lid comprises:
• a first water circuit configured to input the cold therapy liquid from the bucket body to a cold therapy pad;
• a second water circuit configured to output the cold therapy liquid from the cold therapy pad to the bucket body;
• and
• a water pump configured to drive the cold therapy liquid to flow in a loop including the first water circuit, the second water circuit, and the bucket body;
• wherein the first water circuit comprises:
• one or more pumping orifices, provided on a projecting portion of the bucket lid projecting into the bucket body, and immersed in the cold therapy liquid in the bucket body;
• a first guide tube, a first end of the first guide tube being connected to the pumping orifice and a second end of the first guide tube being connected to an inlet port of the water pump;
• and
• a second guide tube, a first end of the second guide tube being connected to an outlet port of the water pump and a second end of the second guide tube being connected to an inlet pipe of the cold therapy pad;
• and
• wherein the first water circuit comprises:
• at least one return orifice with an opening facing in a direction of the bucket body, provided on a side of the bucket lid away from the projecting portion, and provided at a predetermined distance from the pumping orifice;
• and
• a third guide tube, a first end of the third guide tube being connected to an outlet pipe of the cold therapy pad and a second end of the third guide tube being connected to the at least one return orifice;
• wherein:
• the cold therapy system further comprises a lifting handle, the bucket lid closing on the bucket body, the ends of the lifting handle being rotationally connected to both sides of the bucket body respectively, and the lifting handle being provided with a locking structure configured to prevent the bucket lid from falling off;
• the locking structure comprises a first stop plate and a second stop plate, the second stop plate being disposed on a side wall of the bucket lid, the first stop plate being disposed on the lifting handle and the first stop plate being configured to rotate to stop on a top of the second stop plate so that the bucket lid is locked to the bucket body:
• the lifting handle is provided with a knob, the knob being rotatably attached to an end of the lifting handle, and the first stop plate is provided on the knob;
• and
• the knob is located on the outside of the lifting handle, the bucket lid is located on the inside of the lifting handle, the lifting handle is provided with a limiting hole, the first stop plate penetrates the limiting hole and is configured to rotate within the limiting hole.