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:
Apr. 23, 1991
Filed:
Aug. 09, 1989
Harry Reich, Kingston, PA (US);
Peter Koch, Schiller Park, IL (US);
Richard Wolf Medical Instruments Corp., Rosemont, IL (US);
Abstract
A trocar sleeve characterized by an annular flange adjacent a proximal end, a disc-shaped annular stop spaced from the annular flange in a distal direction and helically extending thread extending from said annular disc-shaped stop toward the distal end to prevent the removal of the sleeve from a puncture. The sleeve is used in conjunction with the trocar, which is provided with a disc-shaped annular stop between its ends, which engages the proximal end of the sleeve as the trocar is inserted therethrough and with cutting edges of the trocar being exposed to the distal end of the sleeve. The sleeve and trocar form a device which is used to form a puncture in the wall of a patient and then, after the distal end of the sleeve has been inserted in the puncture, the sleeve is rotated to thread the sleeve into the puncture to a position to prevent its removal. The sleeve is particular useful for the insertion of various instruments, such as endoscopes, to perform internal surgery and is, preferably, provided with an insulating inner sleeve layer.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile