Patent ID: 11877782
Assignee: HYGEA MEDICAL TECHNOLOGY CO., LTD.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 4:
5. The electrical control system for minimally invasive tumor therapies according to claim 4, wherein the refrigeration working medium perfusion module further comprises a perfusion port pressure sensor, which is arranged at a perfusion port of the Dewar vessel;
the perfusion port pressure sensor is configured to detect and send a perfusion port pressure intensity of the refrigeration tank body to the control module; and
the control module is further configured to:
determine, during a first preset duration after opening the first liquid charging valve of the refrigeration working medium perfusion module, whether the received liquid level of the first working medium storage tank of the refrigeration working medium perfusion module is lower than the first liquid level threshold value, wherein the first preset duration is 2 minutes, 5 minutes, or 7 minutes;
determine, if the received liquid level of the first working medium storage tank of the refrigeration working medium perfusion module is lower than the first liquid level threshold value, whether the perfusion port pressure intensity is greater than a second pressure intensity threshold value; and
feed back, if the perfusion port pressure intensity is not greater than the second pressure intensity threshold value, a message for opening the Dewar vessel; or
continue to determine, if the perfusion port pressure intensity is greater than the second pressure intensity threshold value, whether the received liquid level of the first working medium storage tank of the refrigeration working medium perfusion module is lower than the first liquid level threshold value, until the received liquid level of the first working medium storage tank of the refrigeration working medium perfusion module is not lower than the first liquid level threshold value, wherein the second pressure intensity threshold value is 5 KPa.