Method and system for controlling pressurization of a patient cavity using a pressure sensor in a trocar

A method comprising:

• positioning a trocar having a first primary pressure sensor in or on the trocar and a second primary pressure sensor in or on the trocar into a patient cavity;
• supplying an insufflation fluid to the patient cavity;
• measuring a pressure in the patient cavity by the first primary pressure sensor and by the second primary pressure sensor;
• controlling the supply of insufflation fluid by an insufflator to the patient cavity based at least on the pressure measured by the first primary pressure sensor;
• comparing the pressure measurements from the first primary pressure sensor in or on the trocar to pressure measurements from the second primary pressure sensor in or on the trocar;
• and
• determining by a processor associated with the insufflator based on the comparison, that the pressure measured by the first primary pressure sensor in or on the trocar may be inaccurate and in response, controlling, by the insufflator, the supply of insufflation fluid to the patient cavity based at least on a pressure measured by a backup pressure sensor not located in or on the trocar rather than based on the pressure measured by the first primary pressure sensor in or on the trocar.

A method comprising:

• positioning a trocar having a first primary pressure sensor in or on the trocar and a second primary pressure sensor in or on the trocar into a patient cavity;
• supplying an insufflation fluid to the patient cavity;
• measuring a pressure in the patient cavity by the first primary pressure sensor in or on the trocar;
• controlling the supply of insufflation fluid by an insufflator to the patient cavity based at least on the pressure measured by the first primary pressure sensor in or on the trocar;
• comparing the pressure measurements from the first primary pressure sensor in or on the trocar to pressure measurements from the second primary pressure sensor in or on the trocar;
• determining by a processor associated with the insufflator based on the comparison that the pressure measured by the first primary pressure sensor in or on the trocar may be inaccurate and in response, controlling, by the insufflator, the supply of insufflation fluid to the patient cavity based at least on a pressure measured by a backup pressure sensor rather than based on the pressure measured by the first primary pressure sensor in or on the trocar;
• and
• wherein the backup pressure sensor is located within the insufflator.

An insufflator comprising:

• a pressurized fluid source;
• a processor;
• and
• a computer-readable media having logic stored thereon, the logic operable, when executed on the processor, to:
• receive pressure measurements from a first primary pressure sensor positioned on or in a trocar and a second primary pressure sensor positioned on or in a trocar, the trocar positioned in a patient cavity;
• control the supply of insufflation fluid from the pressurized fluid source to the patient cavity based at least on the pressure measurements from the first primary pressure sensor on or in the trocar;
• comparing the pressure measurements from the first primary pressure sensor on or in the trocar to pressure measurements from the second primary pressure sensor on or in the trocar;
• and
• determine based on the comparison, that the first pressure measurements from the first primary pressure sensor may be inaccurate and in response, control the supply of insufflation fluid by the pressurized fluid source to the patient cavity based at least on a pressure measured by a backup pressure sensor not located on or in the trocar rather than based on the pressure measurements from the first primary pressure sensor on or in the trocar.

A computer-readable media having logic stored thereon, the logic operable, when executed on a processor, to:

• receive pressure measurements from a primary pressure sensor positioned on or in a trocar and a second primary pressure sensor positioned on or in the trocar, the trocar positioned in a patient cavity;
• control the supply of insufflation fluid, by an insufflator, to the patient cavity based at least on the pressure measurements from the first primary pressure sensor on or in the trocar;
• comparing the pressure measurements from the first primary pressure sensor on or in the trocar to pressure measurements from the second primary pressure sensor on or in the trocar;
• and
• determine, based on the comparison, that the pressure measurements from the primary pressure sensor may be inaccurate and in response, control the supply of insufflation fluid by the insufflator to the patient cavity based at least on a pressure measured by a backup pressure sensor rather than based on the pressure measurements from the first primary pressure sensor on or in the trocar.