FILTER CARTRIDGE WITH INTERNAL GASEOUS SEAL FOR MULTIMODAL SURGICAL GAS DELIVERY SYSTEM HAVING A SMOKE EVACUATION MODE

摘要

A system is disclosed for delivering gas during a laparoscopic surgical procedure performed within a patient's abdominal cavity requiring smoke evacuation which includes a gas delivery device having a housing with a port for receiving pressurized insufflating gas from a gas source, a pump assembly for circulating gas throughout the system, and a disposable gas conditioning unit or filter cartridge configured for operative association with the gas delivery device.

主权项

1. A system for delivering gas during a laparoscopic surgical procedure performed within a patient's abdominal cavity, comprising:
a) a gas delivery device having a housing with a port for receiving insufflating gas from a gas source, the housing of the gas delivery device being configured for enclosing a pump for circulating pressurized gas throughout the system; b) a separate gas conditioning unit having a housing configured for operative association with the gas delivery device and including:
i) a first internal flow path for receiving pressurized gas delivered from the pump;ii) a second internal flow path for delivering insufflating gas to the abdominal cavity and for facilitating periodic static pressure measurements from the abdominal cavity; andiii) a third internal flow path for returning pressurized gas to the pump; and wherein the first internal flow path includes an internal nozzle assembly that is located within the housing of the gas conditioning unit and is configured to accelerate the pressurized gas delivered by the pump enclosed in the gas delivery device to the gas conditioning unit and thereby generate a continuous pressure barrier contained within the gas conditioning unit that inhibits egress of insufflating gas from the abdominal cavity, wherein the housing of the gas conditioning unit is generally cylindrical and includes an inlet end and an opposed outlet end, and wherein the gas delivery unit includes an engagement port for detachably receiving the gas conditioning unit, wherein the outlet end of the housing of the gas conditioning unit includes an outlet cover having a first outlet port corresponding to the first internal flow path, a second outlet port corresponding to the second internal flow path and a third outlet port corresponding to the third internal flow path.