Endoscopic surgical retractor
Patent 5289817 Issued on March 1, 1994. Estimated Expiration Date: 
August 20, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
August 20, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2034785 3132890 3316912 3871365 Medical instrument attached to an endoscope Urological instrument with deflecting element Surgical retractor for endoscopes Tissue pneumatic separator structure Aspirating surgical forceps Tissue retractor InventorsAssigneeApplicationNo. 747574 filed on 08/20/1991US Classes:600/204, Laproscopic294/97, Pivoted600/226, With special handle606/198Expanding dilator (e.g., expanding arm, etc.)ExaminersPrimary: Apley, Richard J.Assistant: Jalbert, Karen A. Attorney, Agent or FirmForeign Patent References
International ClassA61B 017/02AbstractAn endoscopic tissue retractor capable of being inserted through an endoscopic tube and subsequently capable of forming a T-shaped bar at its distal end. The legs of the "T" may be aligned with the axis of the tissue retractor for insertion within an endoscopic tube and situated transversely to the longitudinal axis for actual use. In use, the legs extend to diametrically opposed sides of the longitudinal axis of the tissue retractor and are rotatable in a plane passing through the axis of the endoscopic tube. A transversely slidable locking mechanism is provided to lock the components of the tissue retractor in a desired position.Field of SearchBlunt dissectorsForceps Tweezers Internal pressure applicator (e.g., dilator) Expanding dilator (e.g., expanding arm, etc.) Pivoted Having means expanding body orifice or canal (e.g., dilator, retaining means, etc.) Expanding bow Expanding arm or finger Expansion actuated by axially movable member Rotatable means actuates axially movable member Expansion actuated by rotatable means (e.g, threaded or cammed member, etc.) | |
