Method of and apparatus for laparoscopic or endoscopic spinal surgery using an unsealed anteriorly inserted transparent trochar
US5569290A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 30, 1995 |
| Grant date | Oct 29, 1996 |
| Priority date | — |
| Expiry date | Jan 30, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/3492
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method of and apparatus for performing endoscopic or laparoscopic surgery on a patient's spine is provided. The apparatus includes a trochar which is specifically design for spinal applications. The trochar includes of a first transparent tubular member of a predetermined diameter and a second transparent tubular member of a slightly larger diameter than the first transparent tubular member. The first transparent tubular member fits slidingly within the second transparent tubular member in a telescoping manner. The first transparent tubular member has two ends: an end for remaining in side-to-side contact with said second tubular member and a free end which has an attached metal fitting with serrated teeth for anchoring in the patient's vertebrae when the trochar is inserted through a incision made in the patient's abdomen or chest. The trochar also includes a collar and set screw arrangement. The collar is made up of a short tubular portion having a flanged end. The flanged end is annularly shaped and protrudes approximately perpendicularly outwardly from the short tubular portion of the collar. The short tubular portion of the collar has a threaded aperture therethrough. The th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.