Minimally invasive retractor for internal mammary artery harvest

Details Minimally invasive retractor for internal mammary artery harvest Minimally invasive retractor for internal mammary artery harvest

1998-07-08

1999-06-01

Hirsch, Paul J.

Surgery

Specula

Retractor

600215, A61B 1702

Patent

active

059083824

ABSTRACT:
An intermammary harvesting retractor comprised of a retractor frame having a fixed or stationary arm on one end of a crossbar and a movable arm mounted on the crossbar by a crank mechanism. The crank mechanism allows the movable arm to be adjusted toward or away from the stationary arm. A support tower is mounted on the free end of the retractor crossbar to allow the angle of the retractor to be adjusted after placement in an incision. The angular adjustment allows the upper portion of a patient's ribcage to be lifted to provide improved access and visualization to the intermammary artery. Adjustable lifter blades are provided on the movable arm to also adjust the lift angle of the upper ribcage. One embodiment has an adjustable lifter blade that can be adjusted after placement in the incision and adjustment of the angle of the retractor crossarm. Another embodiment employs a self-adjusting blade that is pivotally mounted in hangers provided on a lifter blade receiver coupling fitting on the end of the movable arm. The construction and arrangement of the invention allows the placement of the retractor and adjustment of the angle of the retractor by the support tower to lift and retract a patient's upper ribcage to allow improved visualization of the intermammary artery to harvest the intermammary artery for use in heart bypass procedures.

REFERENCES:
patent: 2670732 (1954-03-01), Nelson
patent: 4254763 (1981-03-01), McCready et al.
patent: 4467791 (1984-08-01), Cabrera et al.
patent: 4726356 (1988-02-01), Santilli et al.
patent: 4829985 (1989-05-01), Couetil
patent: 4852552 (1989-08-01), Chaux
patent: 5616117 (1997-04-01), Dinkler et al.
patent: 5772583 (1998-06-01), Wright et al.

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