Surgical access device with active smoke filtration

Abstract

The surgical access device includes a housing and an elongated tubular member extending distally from the housing. The elongated tubular member has an open distal opening. A first electrode is disposed in a first region of the elongated tubular member and surrounds the elongated tubular member. The first electrode is coupled to an anode of the power source and configured to provide a negative charge to the suspended particulate matter. A second electrode is disposed in a second region of the elongated tubular member and surrounds the elongated tubular member. The second electrode is coupled to a cathode of the power source and configured to attract the suspended particulate matter.

Claims

1. A surgical access device, wherein the surgical access device is The casing and An elongated tubular member extending distally from the housing, wherein the elongated tubular member has an open distal opening, A first electrode is circumferentially arranged around a first region on the outer surface of the elongated tubular member, the first electrode being electrically coupled to the anode of the power supply and configured to provide a negative charge to suspended particulate matter, A second electrode is circumferentially arranged around a second region on the outer surface of the elongated tubular member, wherein the second region on the outer surface of the elongated tubular member is located proximal to the first region on the outer surface of the elongated tubular member, and the second electrode is electrically coupled to the cathode of the power supply and is configured to attract the suspended particulate matter. Equipped with, A surgical access device in which, when a vacuum is applied, the suspended particulate matter flows from the surgical site into the elongated tubular member, and as the suspended particulate matter passes through the elongated tubular member, the suspended particulate matter acquires the negative charge from the first electrode and is then attracted to the second electrode.

2. The surgical access device according to claim 1, further comprising a vacuum source coupled to the housing, the vacuum source for discharging the suspended particulate matter through the elongated tubular member.

3. The surgical access device according to claim 1, wherein the first electrode and the second electrode extend circumferentially around the outer surface of the elongated tubular member.

4. The surgical access device according to claim 1, wherein one of the first electrode or the second electrode is a flexible mesh.

5. The suspended particulate matter accumulates on the inner surface of the elongated tubular member adjacent to the second electrode. The surgical access device according to claim 2.

6. The surgical access device according to claim 1, wherein the power supply provides an output voltage of approximately 30 kVDC.

7. A surgical access assembly, wherein the surgical access assembly is A housing, wherein the housing has an elongated tubular member extending from the housing, and the elongated tubular member is insertable into a patient's body cavity, A first electrode is positioned in the distal region on the outer surface of the elongated tubular member, A second electrode is positioned in an intermediate region on the outer surface of the elongated tubular member, wherein the intermediate region is isolated proximal to the distal region, and the second electrode is located in the intermediate region. A power supply having an anode and a cathode, wherein the first electrode is coupled to the anode and the second electrode is coupled to the cathode, and Equipped with, A surgical access assembly in which, when a vacuum is applied, suspended particulate matter flows from the body cavity into the elongated tubular member, and as the suspended particulate matter passes through the elongated tubular member, the suspended particulate matter within the elongated tubular member acquires a negative charge from the first electrode and is subsequently attracted to the second electrode.

8. The surgical access assembly according to claim 7, further comprising a vacuum source coupled to the housing, the vacuum source for discharging the suspended particulate matter through the elongated tubular member.

9. The surgical access assembly according to claim 7, wherein the first electrode and the second electrode extend circumferentially around the outer surface of the elongated tubular member.

10. The surgical access assembly according to claim 7, wherein one of the first electrode or the second electrode is a flexible mesh.

11. The surgical access assembly according to claim 7, wherein the intermediate region is longitudinally separated from the distal region and is located proximal to the distal region.

12. The surgical access assembly according to claim 8, wherein the suspended particulate matter accumulates on the inner surface of the elongated tubular member adjacent to the second electrode.

13. The surgical access assembly according to claim 7, wherein the power supply provides an output voltage of approximately 30 kVDC.

14. A surgical access device for processing smoke at the surgical site, wherein the surgical access device is A long, slender tubular member configured to be inserted into the surgical site, wherein a surgical procedure performed at the surgical site generates smoke containing suspended particulate matter, A first electrode configured to be supplied with a negative charge, wherein the first electrode is coupled to the elongated tubular member and is positioned in the distal region on the outer surface of the elongated tubular member, A second electrode configured to be supplied with a positive charge, the second electrode being coupled to the elongated tubular member and positioned in an intermediate region on the outer surface, the intermediate region being proximal to the distal region, means for applying a vacuum to the lumen of the elongated tubular member Equipped with, A surgical access device wherein the vacuum generates a flow path from the distal region of the elongated tubular member toward the proximal region of the elongated tubular member, the suspended particulate matter flows from the surgical site into the elongated tubular member, and as the suspended particulate matter passes through the elongated tubular member, the suspended particulate matter acquires the negative charge from the first electrode and is subsequently attracted to the second electrode.

15. The surgical access device according to claim 14, wherein the means for applying the vacuum to the lumen of the elongated tubular member includes a vacuum source coupled to the housing of the surgical access device.

16. The surgical access device according to claim 14, wherein the first electrode extends circumferentially around the outer surface of the elongated tubular member.

17. The surgical access device according to claim 16, wherein the second electrode extends circumferentially around the outer surface of the elongated tubular member.

18. The surgical access device according to claim 14, wherein the suspended particulate matter accumulates on the inner surface of the elongated tubular member adjacent to the second electrode.

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