Alexander J Poloyko

53890779, Feb 14, 1995

Mar 3, 1993

8/025983

Lev A. Melinyshyn - Buffalo Grove IL
Edward M. Goldberg - Glencoe IL
Alexander Poloyko - Morton Grove IL
David E. Schucart - Homewood IL

Uresil Corporation - Skokie IL

A61M 500
A61M 5178

604117

An instrument for penetrating into body cavities and potential spaces in preparation for the performance of minimally invasive surgical techniques in which an indicator is provided to assist the surgeon in determining when the instrument is properly placed thereby avoiding injury to vessels and underlying structures in the body cavities and potential spaces.

D3443310, Feb 15, 1994

Mar 3, 1992

7/844698

Alexander Poloyko - Morton Grove IL
Jeffrey T. Williams - Round Lake Beach IL
Paul H. Hubbard - Chicago IL
Lev Melinyshyn - Buffalo Grove IL

Uresil Corporation - Skokie IL

D24118

53521846, Oct 4, 1994

Mar 12, 1992

7/850655

Mark C. Goldberg - Boston MA
Lev Melinyshyn - Buffalo Grove IL
Alexander Poloyko - Morton Grove IL
Edward M. Goldberg - Glencoe IL

UreSil Corporation - Skokie IL

A61F 200

600 37

A specimen-receiving receptacle apparatus for use in minimally invasive surgical procedures can be remotely opened and closed from a proximal end of the apparatus, outside of the patient. The apparatus includes a belt having substantial longitudinal rigidity so that the belt can be forced longitudinally into the surgical site to open the specimen-retrieval receptacle from a remote end of the apparatus. The belt can be longitudinally pulled out of the surgical site to close the specimen-retrieval receptacle from outside of the patient. The belt is relatively flexible or easily deformable along an open end of the receptacle without deforming substantially out of the plane of the open receptacle end. This is achieved by aligning the belt with respect to the open end such that a large dimension of the belt is aligned transverse to the plane of the open receptacle end. In a preferred embodiment, the belt is extruded from nylon and has an elliptical cross-sectional shape.

56015801, Feb 11, 1997

Jan 9, 1995

8/313229

Mark C. Goldberg - Boston MA
Alexander Poloyko - Morton Grove IL

Uresil Corporation - Skokie IL

A61B 1732

606159

An improved valve cutter for in-situ incision of valve leaflets which safely, efficiently, and consistently renders venous valves incompetent while minimizing frictional forces on the endothelium of the vessel and preventing inadvertent contact between cutting surfaces and the intima of the vein wall. The valve cutter includes a plurality of proximally directed prongs presenting sharp edges, where the prongs are separated by slots similarly presenting sharp edges to pierce the valve leaflets so that the cutting head is provided with a continuous cutting surface in multiple planes running along the entire forward edge of the cutting head. Fiber optics provided for viewing the valves as they are penetrated by the sharp cutting edges.

53398017, Aug 23, 1994

Mar 12, 1992

7/850652

Alexander Poloyko - Morton Grove IL
Mark C. Goldberg - Boston MA
Edward M. Goldberg - Glencoe IL
Lev A. Melinyshyn - Buffalo Grove IL
David E. Schucart - Homewood IL

UreSil Corporation - Skokie IL

A61B 1702

128 20

A surgical retractor having a plurality of widenable and narrowable blades of substantial width, having tissue-contacting surfaces that are not significantly narrower, in a collapsed position, than a guide tube for guiding the retractor blades through a surgical access port to a surgical site during a minimally invasive surgical procedure. Each retractor blade includes a relatively large, preferably planar, tissue-contacting surface for displacing or repositioning internal body tissue, such as an internal organ, for temporary displacement away from the surgical site. After insertion through a surgical access port one or more of the retractor blades can be widened laterally to substantially space distal ends of the retractor blades apart for maximum contact against and over a substantial area of the tissue to be displaced during the surgical procedure. After completion of the operative procedure, the retractor blades can be narrowed by nesting the blades together and the retractor can be easily and safely withdrawn from the access port.

53041895, Apr 19, 1994

Apr 9, 1992

7/865850

Mark Goldberg - Boston MA
Alexander Poloyko - Morton Grove IL
Edward M. Goldberg - Glencoe IL
Lev Melinyshyn - Buffalo Grove IL

Lafeber Company - Odell IL

A61B 1732

606159

An improved valve cutter for in-situ incision of valve leaflets which safely, efficiently, and consistently renders venous valves incompetent while minimizing frictional forces on the endothelium of the vessel and preventing inadvertent contact between cutting surfaces and the intima of the vein wall. The valve cutter includes a plurality of proximally directed prongs presenting sharp edges, where the prongs are separated by slots similarly presenting sharp edges to pierce the valve leaflets so that the cutting head is provided with a continuous cutting surface in multiple planes running along the entire forward edge of the cutting head.

51527774, Oct 6, 1992

Jan 25, 1989

7/301656

Edward M. Goldberg - Glencoe IL
Lev Melinyshyn - Mt. Prospect IL
Alexander Poloyko - Morton Grove IL

Uresil Corporation - Skokie IL

A61B 1700

606200

An apparatus and method for providing protection from emboli and prevention of occlusion in blood vessels entailing the use of a temporarily emplaced, complaint and conformable trap which may be removed when medically necessary and which will not damage the architecture of the blood vessel.