Surgical retractor
Patent 6371911 Issued on April 16, 2002. Estimated Expiration Date: 
August 10, 2020. 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 10, 2020. 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 3227156 Surgical retractor elements and assembly Sternal retractor Sternal retractor Low wear bearing for a surgical retractor Rotatable retractor blade with detachable clamp Patent #: 6042542 InventorsAssigneeApplicationNo. 635543 filed on 08/10/2000US Classes:600/232, Three sided rectangular frame600/231Supporting frameExaminersPrimary: Smith, JerryAttorney, Agent or FirmInternational ClassA61B 001/32AbstractIn a hands-free, spreader retractor for thoracic or abdominal surgery comprising a frame with parallel, blade-supporting arms movable toward and away from each other by a rack and pinion mechanism, plural blades are supported on the arms by depending pylons which are substantially narrower than the widths of the blades measured in the direction of elongation of the arms, to permit accumulation of fat of an obese patient between adjacent pylons. The lower portions of the pylons are connected to the undersides of the arms by narrow stems which are spaced from the edges of the arms to allow auxiliary instrument supports to slide lengthwise along the arms. | |
