Disposable laparoscopic smoke evacuation system

• US 6,544,210 B1
• Filed: 10/22/1998
• Issued: 04/08/2003
• Est. Priority Date: 10/22/1998
• Status: Expired due to Term

• Current Assignee: Buffalo Filter LLC
• Original Assignee: Vision Medical Technology, Inc.
• Inventors: Smith, Shawn P., Trudel, Gregory J.
• Primary Examiner(s): Casler, Brian L.
• Assistant Examiner(s): Thanh, LoAn H.
• Application Number:
  US09/177,202
• Time in Patent Office: 1,629 Days
• Field of Search: 604/35, 604/319, 604/21, 604/23-28, 606/34, 206/363, 206/438-439, 952/14, 952/41--43, 952/54, 952/58, 952/73, 952/74, 952/86--87, 96/4, 96/7, 96/9, 961/76, 961/79, 961/82, 961/86, 962/02, 962/90, 962/96, 131/270-272, 131/202, 131/215.2, 131/331, 552/82, 552/84, 553/07, 553/08, 553/15--27, 553/38
• US Class Current: 604/26
• CPC Class Codes: A61B 18/00 Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body eye surgery A61F9/007; ear surgery A61F11/00
• CPC Class Codes: A61B 2218/008 for smoke evacuation

Abstract

A disposable laparoscopic smoke evacuation system. The system utilizes a small fan unit and filter housed in a single disposable housing adapted to be connected between two laparoscopic surgical instrument assemblies via tubing and powered by batteries or available AC power.

Claims

1. A smoke removal apparatus comprising:

a housing;

inlet means for defining an inlet pathway for impure gas from a surgical cavity to said housing, wherein said inlet means comprise Luer locks for connecting said surgical cavity to said inlet pathway;

filter means for filtering impurities from impure gas to form filtered gas;

outlet means for defining an outlet pathway for said filtered gas from said housing to said surgical cavity; and

a fan, for drawing impure gas from said surgical cavity, through said inlet means, and through said filter means to form said filtered gas and for driving said filtered gas through said outlet means into said surgical cavity, wherein said outlet means are adapted to laparoscopic surgical instrument assembly, wherein said filter means comprises a pre-filter and a primary filter with said pre-filter being positioned between said fan and said primary filter.

2. The apparatus according to claim 1, wherein said outlet means comprises Luer locks for connecting said outlet pathway to said surgical cavity.

3. The apparatus of claim 2, wherein said housing includes a pair of spaced peripheral internal ribs defining a sealable space in capable of receiving at least one of said primary filter and said pre-filter.

4. The apparatus according to claim 3, wherein said housing further comprises a side wall having an opening adjacent to said sealable space for insertion and removal of at least one of said group consisting of said primary filter and said pre-filter.

5. The apparatus according to claim 4, wherein said housing has a generally rectangular cross section with four side walls and a portion of each of said internal ribs extend inwardly from each of said four side walls.

6. The apparatus according to claim 5, wherein said fan operates at variable speeds.

7. The apparatus according to claim 4, further comprising a door over said opening of said side wall.

8. The apparatus according to claim 4, wherein a door is hinged to said side wall adjacent to said opening.

9. The apparatus of claim 2 wherein said inlet means comprises at least one inlet tube and said outlet means compromise at least one outlet tube.

10. The apparatus of claim 9, wherein said at least one inlet tube comprises a substantially sterile tube and said outlet tube comprises a substantially sterile tube.

11. The apparatus of claim 3, wherein said fan is adjustable in speed.

12. The apparatus of claim 2, wherein said fan is adjustable in speed.

13. The apparatus of claim 2, wherein at least one of said primary filter and said pre-filter is replaceable.

14. The apparatus according to claim 2, wherein said outlet means are adapted to a laparoscopic surgical instrument assembly.

15. The apparatus of claim 2, further comprising an intermediate chamber positioned between said fan and said filter means.

16. The apparatus of claim 2, wherein said filter means has a filtration capacity that meets HEPA specifications.

17. The apparatus of claim 2, wherein said filter means has a filtration capacity that meets ULPA specifications.

18. The apparatus of claim 2, wherein said filtered gas comprises substantially pure CO₂.

19. The apparatus of claim 1, wherein said housing includes a pair of spaced peripheral internal ribs defining a sealable space in capable of receiving at least one of said primary filter and said pre-filter.

20. The apparatus according to claim 19, wherein said housing further comprises a side wall having an opening adjacent to said sealable space for insertion and removal of at least one of said primary filter and said pre-filter.

21. The apparatus according to claim 8, wherein said housing has a generally rectangular cross section with four side walls and a portion of each of said internal ribs extend inwardly from each of said four side walls.

22. The apparatus according to claim 21, wherein said fan operates at variable speeds.

23. The apparatus according to claim 20, further comprising a door over said opening of said side wall.

24. The apparatus according to claim 20, wherein a door is hinged to said side wall adjacent to said opening.

25. The apparatus according to claim 19, wherein said fan is adjustable in speed.

26. The apparatus of claim 1, wherein said inlet means comprises at least one inlet tube and said outlet means comprises at least one outlet tube.

27. The apparatus of claim 24, wherein said at least one inlet tube comprises a substantially sterile tube and said outlet tube comprises a substantially sterile tube.

28. The apparatus of claim 1, wherein said fan is adjustable in speed.

29. The apparatus of claim 18, wherein at least one of said primary filter and said pre-filter is replaceable.

30. The apparatus of claim 1, further comprising an intermediate chamber positioned between said fan and said filter means.

31. The apparatus of claim 1, wherein said filter means has a filtration capacity that meets HEPA specifications.

32. The apparatus of claim 1, wherein said filter means has a filtration capacity that meets ULPA specifications.

33. The apparatus of claim 1, wherein said filtered gas comprises substantially pure CO₂.

34. A method for removing impurities from surgical cavity gas, using a smoke removal apparatus comprising:

a housing;

inlet means for defining an inlet pathway for impure gas from a surgical cavity to said housing, wherein said inlet means comprises Luer locks for connecting said surgical cavity to said inlet pathway;

filter means for filtering impurities from impure gas to form filtered gas;

outlet means for defining an outlet pathway for said filtered gas from said housing to said surgical cavity; and

a fan, for drawing said impure gas from said surgical cavity, through said inlet means, and through said filtered gas and for driving said filtered gas through said outlet means into said surgical cavity, wherein said filter means comprises a pre-filter and a primary filter with said pre-filter being positioned between said fan and said primary filter;

wherein said surgical cavity is substantially enclosed and said method comprises the following steps;

removing said impure gas from said surgical cavity;

filtering said impurities from said impure gas to create filtered gas; and

returning said filtered gas to said surgical cavity.

35. The method of claim 34, wherein said filtered gas meets HEPA specifications.

36. The method of claim 34, wherein said filtered gas meets ULPA specifications.

37. The method of claim 36, wherein said filtered gas comprises substantially pure CO₂.

38. A method for removing impurities from surgical cavity gas, using a smoke removal apparatus comprising:

a housing;

inlet means for defining an inlet pathway for impure gas from a surgical cavity to said housing;

filter means for filtering impurities from impure gas to form filtered gas;

outlet means for defining an outlet pathway for said filtered gas from said housing to said surgical cavity, wherein said outlet means comprises Luer locks for connecting said outlet pathway to said surgical cavity; and

a fan, for drawing impure gas from said surgical cavity, through said inlet means, and through said filter means to form said filtered gas and for driving said filtered gas through said outlet means into said surgical cavity, wherein said filter means comprises a pre-filter and a primary filter with said pre-filter being positioned between said fan and said primary filter;

wherein said surgical cavity is substantially enclosed and said method comprises the following steps;

removing said impure gas from said surgical cavity;

filtering said impurities from said impure gas to create filtered gas; and

returning said filtered gas to said surgical cavity.

39. The method of claim 38, wherein said filtered gas meets ULPA specifications.

40. The method of claim 39, wherein said filtered gas comprises substantially pure CO₂.

41. The method of claim 38, wherein said filtered gas meets HEPA specifications.

42. The method of claim 38, wherein said inlet means comprise Luer locks for connecting said surgical site to said inlet pathway.

43. A smoke removal apparatus comprising:

a housing;

inlet means for defining an inlet pathway for impure gas from a surgical cavity to said housing, wherein said inlet means comprises Luer locks for connecting said surgical cavity to said inlet pathway;

filter means for filtering impurities from impure gas to form filtered gas;

outlet means for defining an outlet pathway for said filtered gas from said housing to said surgical cavity; and

a fan, for drawing said impure gas from said surgical cavity, through said inlet means, and through said filter means to form said filtered gas and for driving said filtered gas through said outlet means into said surgical cavity, wherein said outlet means are adapted to laparoscopic surgical instrument assembly, wherein said filter means comprises a pre-filter and a primary filter with said fan being positioned between said pre-filter and said primary filter.

44. The apparatus according to claim 43, wherein said outlet means comprises Luer locks for connecting said outlet pathway to said surgical site.

45. The apparatus of claim 44 wherein said inlet means comprises at least one inlet tube and said outlet means compromises at least one outlet tube.

46. The apparatus of claim 45, wherein said at least one inlet tube comprises a substantially sterile tube and said outlet tube comprises a substantially sterile tube.

47. The apparatus of claim 44, wherein said fan is adjustable in speed.

48. The apparatus of claim 44, wherein at least one of said primary filter and said pre-filter is replaceable.

49. The apparatus according to claim 44, wherein said outlet means are adapted to a laparoscopic surgical instrument assembly.

50. The apparatus of claim 44, wherein said filter means has a filtration capacity that meets HEPA specifications.

51. The apparatus of claim 44, wherein said filter means has a filtration capacity that meets ULPA specifications.

52. The apparatus of claim 44, wherein said filtered gas comprises substantially pure CO₂.

53. The apparatus of claim 43, wherein said inlet means comprises at least one inlet tube and said outlet means comprises at least one outlet tube.

54. The apparatus of claim 53, wherein said at least one inlet tube comprises a substantially sterile tube and said outlet tube comprises a substantially sterile tube.

55. The apparatus of claim 43, wherein said fan is adjustable in speed.

56. The apparatus of claim 43, wherein at least one of said primary filter and said pre-filter is replaceable.

57. The apparatus of claim 43, wherein said filter means has a filtration capacity that meets HEPA specifications.

58. The apparatus of claim 43, wherein said filter means has a filtration capacity that meets ULPA specifications.

59. The apparatus of claim 43, wherein said filtered gas comprises substantially pure CO₂.

60. A method for removing impurities from surgical cavity gas, using a smoke removal apparatus comprising:

a housing;

inlet means for defining an inlet pathway for impure gas from a surgical cavity to said housing, wherein said inlet means comprises Luer locks for connecting said surgical cavity to said inlet pathway;

filter means for filtering impurities from impure gas to form filtered gas;

outlet means for defining an outlet pathway for said filtered gas from said housing to said surgical cavity; and

a fan, for drawing said impure gas from said surgical cavity, through said inlet means, and through said filter more to form filtered gas and for driving said filtered gas through said outlet means into said surgical cavity, wherein said filter means comprises a pre-filter and a primary filter with said fan being positioned between said primary filter and said pre-filter;

wherein said surgical cavity is substantially enclosed and said method comprises the following steps;

removing said impure gas from said surgical cavity;

filtering said impurities from said impure gas to create filtered gas; and

returning said filtered gas to said surgical cavity.

61. The method of claim 60, wherein said filtered gas meets ULPA specifications.

62. The method of claim 61, wherein said filtered gas comprises substantially pure CO₂.

63. The method of claim 60, wherein said filtered gas meets HEPA specifications.

64. A method for removing impurities from surgical cavity gas, using a smoke removal apparatus comprising:

a housing;

inlet means for defining an inlet pathway for impure gas from a surgical cavity to said housing;

filter means for filtering impurities from impure gas to form filtered gas;

outlet means for defining an outlet pathway for said filtered gas from said housing to said surgical cavity, wherein said outlet means comprises Luer locks for connecting said outlet pathway to said surgical cavity; and

a fan, for drawing said impure gas from said surgical cavity, through said inlet means, and through said filter means to form said filtered gas and for driving said filtered gas through said outlet means into said surgical cavity, wherein said filter means comprises a pre-filter and a primary filter with said fan being positioned between said primary filter and said pre-filter;

wherein said surgical cavity is substantially enclosed and said method comprises the following steps;

removing said impure gas from said surgical cavity;

filtering said impurities from said impure gas to create filtered gas; and

returning said filtered gas to said surgical cavity.

65. The method of claim 64, wherein said filtered gas meets ULPA specifications.

66. The method of claim 65, wherein said filtered gas comprises substantially pure CO₂.

67. The method of claim 64, wherein said filtered gas meets HEPA specifications.

68. The method of claim 64, wherein said inlet means comprises Luer locks for connecting said surgical cavity to said inlet pathway.