The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 20, 1999
Filed:
Mar. 26, 1997
Donald D Exline, Carrollton, TX (US);
William A Pierce, Dallas, TX (US);
Other;
Abstract
A cannula comprises a housing secured to a generally tubular sleeve member. The housing is provided with irrigation and evacuation fluid ports for connection to irrigation and evacuation conduits. An instrument port is formed in the housing and aligned with the sleeve member, wherein a surgical instrument can be inserted through the instrument port, housing, and sleeve member and into the bodily cavity. The instrument port includes seal members to seal against fluid leakage from the cannula with or without a surgical instrument passing through the housing and sleeve member. A valve member is rotatably carried by the housing to selectively obstruct one or more of the irrigation and evacuation ports. The valve is arranged such that the surgical instrument may remain in the housing and sleeve member during manipulation of the valve.