Bruce A Levahn

47181516, Jan 12, 1988

Jun 2, 1986

6/869347

Bruce A. LeVahn - New Brighton MN
Robert E. Olson - Roseville MN

Minnesota Scientific, Inc. - Minneapolis MN

A44B 2100

24535

A retractor apparatus for attachment to a rail of a surgical table includes first, second and third support rods and first, second and third clamps. The first support rod is attached to the rail of the surgical table and permits movement about and along a vertical axis of the first rod. The second rod is attached to an upper section of the first rod with the second clamp. The second clamp permits movement of the second support rod about an axis of the first rod and about an axis of the second support rod and permits pivotal movement of the second rod with respect to the first rod about a pivotal axis of the second clamp. The third clamp clamps the third rod to the second rod and permits movement of the third rod along and about the axis of the second rod and about the axis of the third rod and permits movement about a pivotal axis of the third clamp. The third rod includes first and second spaced apart leg portions that extend over the surgical table on opposite sides proximate the incision for support of retractors.

46179160, Oct 21, 1986

Nov 8, 1984

6/669362

Bruce A. LeVahn - New Brighton MN
Robert E. Olson - Roseville MN

Minnesota Scientific, Inc. - Minneapolis MN

A61B 1702

128 20

A rectractor apparatus for attachment to a rail of a surgical table includes first, second and third support rods and first, second and third clamps. The first support rod is attached to the rail of the surgical table and permits movement about and along a vertical axis of the first rod. The second rod is attached to an upper section of the first rod with the second clamp. The second clamp permits movement of the second support rod about an axis of the first rod and about an axis of the second support rod and permits pivotal movement of the second rod with respect to the first rod about a pivotal axis of the second clamp. The third clamp clamps the third rod to the second rod and permits movement of the third rod along and about the axis of the second rod and about the axis of the third rod and permits movement about a pivotal axis of the third clamp. The third rod includes first and second spaced apart leg portions that extend over the surgical table on opposite sides proximate the incision for support of retractors.

49915932, Feb 12, 1991

Jun 13, 1989

7/365754

Bruce A. LeVahn - New Brighton MN

Minnesota Scientific, Inc. - Minneapolis MN

A61F 1300

128856

A device for maintaining a body organ during surgery includes a flexible enclosure having at least one opening large enough to permit the body organ to pass through and including means for limiting closure of the opening such that injury to the body organ is minimized.

50201956, Jun 4, 1991

Aug 16, 1989

7/394578

Bruce A. LeVahn - New Brighton MN

Minnesota Scientific, Inc. - St. Paul MN

A44B 2100
A61B 1702

24514

A clamping device, preferably for use on a retractor support, includes a first clamping mechanism and a second clamping mechanism, the first clamping mechanism includes first and second pivotal clamping sections pivotal between a clamping position and an open position, and a mechanism for compressing the first and second clamping mechanisms to a clamping position.

49497073, Aug 21, 1990

Jan 11, 1988

7/143499

Bruce A. LeVahn - New Brighton MN
Robert E. Olson - Roseville MN

Minnesota Scientific, Inc. - Minneapolis MN

A61B 1702

128 20

A retractor apparatus includes an extension rod, first and second support rods and first and second clamps. The extension rod is attached to the first support rod with the first clamp. The first support rod is attached to the second support rod with the second clamp. The first and second support rods extend outwardly over the surgical table on opposite sides of the incision and the second support rod may be moved relative to the first support rod so as to correctly position the retractors over the incision.

43556310, Oct 26, 1982

Mar 19, 1981

6/245378

Bruce A. LeVahn - Robbinsdale MN

Minnesota Scientific, Inc. - Minneapolis MN

A61B 132
A61B 1702

128 20

A retractor apparatus includes an improved clamping device on the sterile side of a surgical drape with the drape covering an operating table having side rails. The device includes a first member having a first clamping portion and a second member having a second clamping portion. The second member is pivotally attached to the first member. The first and second portions engage the sterile side of the surgical drape and when the second member is pivoted into a clamping position with the first member, the first and second portions clamp the surgical drape and side rail. A tightening mechanism retains the first and second clamping portions in the clamping position. The first and second members have first and second passages, respectively, that are substantially aligned with each other in both the clamping position and a nonclamping position. A support member of the surgical retractor apparatus extends through the first and second passages and is secured therein in a fixed position by a suitable mechanism.

54007720, Mar 28, 1995

May 24, 1991

7/705115

Bruce A. LeVahn - New Brighton MN
Lee Bolduc - New Brighton MN

Minnesota Scientific, Inc. - St. Paul MN

A61B 1702

128 20

A retractor apparatus having a hollow rod member and a clamping device is provided. Support members are adjustably secured to the hollow rod member. The clamping device includes a first member having a first clamping portion and a second member having a second clamping portion. The second member is pivotally attached to the first member. When the second member is pivoted into a clamping position with the first member, the first and second portions clamp a side rail of an operating table. A tightening mechanism retains the first and second clamping portions in the clamping position. The first member has a passage for receiving the hollow rod member.

50800884, Jan 14, 1992

Nov 9, 1987

7/118477

Bruce A. LeVahn - New Brighton MN

Minnesota Scientific, Inc. - Minneapolis MN

A61B 1702

128 20

A retractor apparatus includes a retractor blade having a malleable element that defines a blade perimeter and a retractor area. A flexible member is supported by the malleable element and extends over the retractor area.