Surgical gas delivery system with remote gaseous sealing module for maintaining stable pressure in a surgical cavity

1. A gaseous sealing module for use with a surgical gas delivery device comprising:

a) a vented housing defining an interior plenum chamber and having a tapered throat portion that extends from a distal end of the vented housing for communication with a gas sealed lumen, wherein the vented housing is located remote from the surgical gas delivery device and includes a louvered vent surface formed in an exterior proximal end wall of the vented housing opposite the tapered throat portion;

b) a ring jet assembly disposed within the interior plenum chamber of the vented housing between the tapered throat portion and the exterior proximal end wall for generating a gaseous seal within an interior region of the tapered throat portion of the vented housing, which creates a stable pressure barrier that maintains a stable pressure through a length of the gas sealed lumen, wherein an unfiltered vent path extends from the tapered throat portion, through the ring jet assembly, to the louvered vent surface; and

c) a connective fitting extending from the vented housing and defining a gas delivery path in communication with the interior plenum chamber of the vented housing and a gas return path in communication with the tapered throat portion of the vented housing, wherein the gas delivery path of the connective fitting is configured to connect with a gas delivery lumen of a filtered tube set and the gas return path of the connective fitting is configured to connect with a gas return lumen of the filtered tube set.

2. The gaseous sealing module as recited in claim 1 , wherein the louvered vent surface in the exterior proximal end wall of the vented housing facilitates bi-directional gas exchange with an atmosphere.

3. The gaseous sealing module as recited in claim 1 , wherein the ring jet assembly is a two-part ring jet assembly that includes an upper ring member with an upper O-ring seal and a lower ring member with a lower O-ring seal.

4. The gaseous sealing module as recited in claim 1 , wherein the connective fitting is a dual lumen fitting in which the gas delivery path and the gas return path are arranged in a concentric configuration.

5. The gaseous sealing module as recited in claim 1 , wherein a plurality of circumferentially spaced apart fins are formed within the interior region of the tapered throat portion of the vented housing.

6. The gaseous sealing module as recited in claim 1 , wherein the vented housing is a cylindrical housing and the connective fitting extends radially outwardly therefrom.

7. The gaseous sealing module as recited in claim 1 , wherein the gas delivery lumen and the gas return lumen extend from a filter cartridge of the filtered tube set that is separate and remote from the vented housing.

8. A gaseous sealing module for use with a surgical gas delivery system comprising:

a) a vented housing defining an interior plenum chamber and having a tapered throat portion that extends from a distal end of the vented housing for communication with a gas sealed lumen, wherein the vented housing includes a louvered vent surface formed in an exterior proximal end wall of the vented housing opposite the tapered throat portion;

b) a ring jet assembly disposed within the interior plenum chamber of the vented housing between the tapered throat portion and the exterior proximal end wall for generating a gaseous seal within an interior region of the tapered throat portion of the vented housing, which creates a stable pressure barrier that maintains a stable pressure through a length of the gas sealed lumen, wherein an unfiltered vent path extends from the tapered throat portion, through the ring jet assembly, to the louvered vent surface; and

c) a connective fitting extending from the vented housing and defining a gas delivery path in communication with the interior plenum chamber of the vented housing and a gas return path in communication with the tapered throat portion of the vented housing, wherein the gas delivery path of the connective fitting is configured to connect with a gas delivery lumen of a filtered tube set and the gas return path of the connective fitting is configured to connect with a gas return lumen of the filtered tube set, wherein the gas delivery lumen and the gas return lumen extend from a filter cartridge of the filtered tube set that is separate and remote from the vented housing.

9. The gaseous sealing module as recited in claim 8 , wherein the louvered vent surface in the exterior proximal end wall of the vented housing facilitates bi-directional gas exchange with an atmosphere.

10. The gaseous sealing module as recited in claim 8 , wherein the ring jet assembly is a two-part ring jet assembly that includes an upper ring member with an upper O-ring seal and a lower ring member with a lower O-ring seal.

11. The gaseous sealing module as recited in claim 8 , wherein the connective fitting is a dual lumen fitting in which the gas delivery path and the gas return path are arranged in a concentric configuration.

12. The gaseous sealing module as recited in claim 8 , wherein a plurality of circumferentially spaced apart fins are formed within the interior region of the tapered throat portion of the vented housing.

13. The gaseous sealing module as recited in claim 8 , wherein the vented housing is a cylindrical housing and the connective fitting extends radially outwardly therefrom.