Gas circulation system with single lumen gas sealed access port and single lumen valve sealed access port for use during endoscopic surgical procedures

1. A system for performing an endoscopic surgical procedure in a surgical cavity of a patient, comprising:

a) a multi-lumen tube set including a dual lumen portion having a pressurized gas line and a return gas line for facilitating gas recirculation relative to the surgical cavity of the patient, and a single lumen portion having a gas supply and sensing line for delivering insufflation gas to the surgical cavity of the patient and for periodically sensing pressure within the surgical cavity of the patient, wherein the multi-lumen tube set is operatively associated with a multi-path filter cartridge assembly that includes a first filtered flow passage communicating with the pressurized gas line, a second filtered flow passage communicating with the return gas line, and a third filtered flow passage communicating with the gas supply and sensing line;

b) a first access port having a proximal housing portion and an elongated single lumen tubular body portion extending distally from the proximal housing portion and defining a central cannula, the proximal housing portion of the first access port having an inlet path for communicating with the pressurized gas line of the tube set and an outlet path for communicating with the return gas line of the tube set, wherein the proximal housing portion of the first access port includes a manifold that defines the inlet path and the outlet path wherein the inlet and outlet paths are concentrically arranged within the manifold, and wherein the dual lumen portion of the tube set includes a connector with coaxial flow passages for coupling with the manifold of the first access port; and

c) a second access port having a proximal housing portion and a single lumen tubular body portion extending from the proximal housing portion, the proximal housing portion of the second access port having an inlet path for communicating with the gas supply and sensing line of the tube set, wherein the single lumen portion of the tube set includes a luer type connector for coupling with a luer type fitting associated with the inlet path of the second access port.

2. A system as recited in claim 1 , wherein the proximal housing portion of the first access port includes an annular jet assembly for receiving pressurized gas from the inlet path and for generating a gaseous sealing zone within the central cannula of the tubular body portion of the first access port to maintain a stable pressure within the surgical cavity of the patient.

3. A system as recited in claim 1 , wherein the proximal housing portion of the second access port includes a mechanical valve for sealing the tubular body portion of the second access port.

4. A system as recited in claim 1 , wherein the first access port is adapted and configured to perform smoke evacuation from the surgical cavity of the patient in conjunction with the second access port.

5. A system as recited in claim 1 , wherein the first access port is adapted and configured to permit air entrainment and instrument access into the surgical cavity.

6. A system as recited in claim 1 , further comprising a gas recirculation apparatus including a pump having an outlet for delivering pressurized gas to the pressurized gas line of the tube set and an inlet for receiving depressurized gas from the return line of the tube set, and configured to deliver insufflation gas to the gas supply and sensing line of the tube set from a supply of surgical gas.

7. A system as recited in claim 1 , wherein the proximal housing portion of the first access port is separable from the tubular body portion of the first access port.

8. A system as recited in claim 7 , wherein the proximal housing portion of the first access port includes diametrically opposed spring biased latches for detachably engaging the tubular body portion of the first access port.

9. A system as recited in claim 7 , wherein the tubular body portion of the first access port includes diametrically opposed spring biased latches for detachably engaging the proximal housing portion of the first access port.

10. A system for performing an endoscopic surgical procedure in a surgical cavity of a patient, comprising:

a) a multi-lumen tube set including a dual lumen portion having a pressurized gas line and a return gas line for facilitating gas recirculation relative to the surgical cavity of the patient, and a single lumen portion having a gas supply and sensing line for delivering insufflation gas to the surgical cavity of the patient and for periodically sensing pressure within the surgical cavity of the patient, wherein the multi-lumen tube set is operatively associated with a multi-path filter cartridge assembly that includes a first filtered flow passage communicating with the pressurized gas line, a second filtered flow passage communicating with the return gas line, and a third filtered flow passage communicating with the gas supply and sensing line;

b) a first access port having a proximal housing portion and an elongated single lumen tubular body portion extending distally from the proximal housing portion and defining a central cannula, the proximal housing portion of the first access port having an inlet path for communicating with the pressurized gas line of the tube set and an outlet path for communicating with the return gas line of the tube set, the proximal housing portion of the first access port accommodating an annular jet assembly for receiving pressurized gas from the inlet path and for generating a gaseous sealing zone within the central cannula of the tubular body portion to maintain a stable pressure within the surgical cavity of the patient, wherein the proximal housing portion of the first access port includes a manifold that defines the inlet path and the outlet path, wherein the inlet and outlet paths are concentrically arranged within the manifold, and wherein the dual lumen portion of the tube set includes a connector with coaxial flow passages for coupling with the manifold of the first access port; and

c) a second access port having a proximal housing and a single lumen tubular body portion extending from the proximal housing portion of the second access port, the proximal housing portion of the second access port having a mechanical valve for sealing the tubular body portion of the second access port and an inlet path for communicating with the gas supply and sensing line of the tube set, wherein the single lumen portion of the tube set includes a leer type connector for coupling with a luer type fitting associated with the inlet path of the second access port.

11. A system as recited in claim 10 , wherein the first access port is adapted and configured to perform smoke evacuation from the surgical cavity of the patient in conjunction with the second access port.

12. A system as recited in claim 10 , wherein the first access port is adapted and configured to permit air entrainment and instrument access into the surgical cavity.

13. A system as recited in claim 10 , further comprising a gas recirculation apparatus including a pump having an outlet for delivering pressurized gas to the pressurized gas line of the tube set and an inlet for receiving depressurized gas from the return line of the tube set, and configured to deliver insufflation gas to the gas supply and sensing line of the tube set from a supply of surgical gas.

14. A system as recited in claim 10 , wherein the proximal housing portion of the first access port is separable from the tubular body portion of the first access port.

15. A system as recited in claim 14 , wherein the proximal housing portion of the first access port includes diametrically opposed spring biased latches for detachably engaging the tubular body portion of the first access port.

16. A system as recited in claim 14 , wherein the tubular body portion of the first access port includes diametrically opposed spring biased latches for detachably engaging the proximal housing portion of the first access port.