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Cannula assembly

  • US 6,685,665 B2
  • Filed: 09/07/2001
  • Issued: 02/03/2004
  • Est. Priority Date: 09/08/2000
  • Status: Expired due to Fees
First Claim
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1. A cannula assembly comprising:

  • a housing comprising at least a first port and a cannula sleeve, the cannula sleeve comprising a second port, wherein said housing defines a fluid flow path between the first port and the second port, and said housing is arranged to allow a trocar to be removably passed through the second port; and

    a cylindrical gas filter disposed in the housing, across the fluid flow path, wherein said gas filter comprises at least one gas filter element comprising at least one porous medium, and the gas filter has an opening allowing the trocar to be removably passed through the opening while the cannula assembly extends into a patient'"'"'s body cavity.

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