Surgery – Specula – Retractor
Patent
1995-05-05
1998-03-03
Flanagan, Beverly M.
Surgery
Specula
Retractor
600204, 600215, 600219, 600225, 606205, A61B 1102
Patent
active
057229350
ABSTRACT:
A surgical retractor retracts tissue from a body cavity in which surgery is to be performed. The retractor has a plurality of fingers or blades which extend laterally from a handle. The fingers pivot about a pivot pin between a retracted position and an extended position. Extension is achieved by rotation of a centered control plate relative to the handle. The pivot pin for the fingers is displaced from the axis of the handle, and moves relative to the handle. Each of the fingers has an arcuate slot, and a guide post within the arcuate slots controls pivoting. Because of the distance separating the pivot pin and the axis of the handle, extension of the fingers occurs a distance away from the incision into which the retractor is inserted, and undue trauma to the incision is avoided. Because the pivot point moves relative to the handle, the fingers extend longitudinally during the pivoting motion. Different lengths, numbers and configurations of blades or fingers may be used to provide the desired profile and continuity for the retraction area.
REFERENCES:
patent: 749811 (1904-01-01), Bernays
patent: 5183032 (1993-02-01), Villalta et al.
Flanagan Beverly M.
Minnesota Scientific, Inc.
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