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:
Jan. 05, 1993
Filed:
Apr. 01, 1991
Fred A Allgood, Fort Worth, TX (US);
Michael W Freitas, Irving, TX (US);
Dexide, Inc., Fort Worth, TX (US);
Abstract
The invention provides a combination surgical trocar housing and selective reducer sleeve assembly in which the sleeve assembly members may be telescopically received within the trocar housing to reduce the diameter therethrough. The sleeve members provide a seal to prevent transmission of fluid within the annular area between internal and external diameters of respective members and may be latchingly secured relative to one another to resist telescopic expansive movement to stabilize the sleeve assembly relative to the trocar housing. The sleeve assembly permits acceptance through a single trocar housing of a number of auxiliary surgical instruments having serially smaller diameters, thus enabling performance of the surgical operation using each such instrument, without removal from the body wall of the original trocar housing.