DR. ROBERT A. ERSEK, M.D., F.A.C.S.
Medical Practice at 34 St, Austin, TX

4955909, Sep 11, 1990

Jan 31, 1989

7/304764

Robert A. Ersek - Austin TX
Arthur A. Beisang - Roseville MN
Arthur A. Beisang - Des Moines IA

Bioplasty, Inc. - St. Paul MN

A61F 202, A61F 212

623 11

Capsular contracture causing firmness of soft silicone implants is a serious problem that may result from several causative factors that have as their final pathway, the development of increased scar tissue. The present invention has altered the formation of this scar encapsulation of silicone implants by texturing the silicone surface in order to gain fibroblast ingrowth into the interstices and thus prevent micromotion at the host prosthesis interface. It has been found that this produces a thinner fibrous capsule. Previously published work pertaining to animals and man has shown that similar texturing of tetrafluoroethylene (Teflon) and other substances achieves these goals. In accordance with work leading up to the present invention, textured silicone samples have been implanted in the subcutaneous layer of rabbits, the capsule formation and the host-prosthesis interface studied histologically. A difference between the smooth surface and the textured surface could be measured wherein the textured surface had a thinner capsule without contracture and the smooth surface had a thicker capsule with contraction.

4780168, Oct 25, 1988

Jan 6, 1987

7/000862

Arthur A. Beisang - Roseville MN
Daniel G. Holman - Blaine MN
Robert A. Ersek - Austin TX

Genetic Laboratories, Inc. - St. Paul MN

B32B 3118

156256

An adhesive strip-like bandage for application to skin wounds for sealing the wound without surface stitches or staples. The wound closure strips may be fabricated from a bias cut, woven, or non-woven, polymer-based material or other film, exhibiting uni-directional stretch properties which permits the strips to stretch in a controlled manner during wound healing. The strip bandages are detachably mounted to a backing member and in one configuration comprise a comb-like structure.

5571182, Nov 5, 1996

Oct 10, 1994

8/321571

Robert A. Ersek - Austin TX
Arthur A. Beisang - Shoreview MN
Arthur A. Beisang - Arden Hills MN

A61F 202

623 11

An improved micro-implantation method and composition for filling depressed scars, unsymmetrical orbital floors, muscle, lip, and other soft tissue defects is provided for use in reconstructive surgery procedures. Textured micro particles having an outside diameter between about 30 microns and 3000 microns are used with an appropriate physiologic vehicle cannula and syringe and/or pressure delivery system into a predetermined locus. The particles provide long-term filling of defects without migration loss.

8084513, Dec 27, 2011

May 11, 2009

12/463526

Arthur A. Beisang - White Bear Lake MN, US
Robert A. Ersek - Austin TX, US
Daniel J. Beisang - North Oaks MN, US

A61F 2/12, A61K 9/00, C08L 39/06, C08L 39/04, C08L 77/02

523113, 424422, 424484, 424486, 623 7, 623 8, 524548, 524555, 525178

Compositions of cross-linked polyvinylpyrrolidone (PVP) are disclosed that are generally in the form of an elastic, hydrophilic, water-insoluble viscous cohesive mass of material that has many important medical uses including uses as a filler for implants. The present invention also involves a process for producing such compositions.

7976859, Jul 12, 2011

Aug 23, 2010

12/861264

Arthur A. Beisang - White Bear Lake MN, US
Robert A. Ersek - Austin TX, US
Daniel J. Beisang - North Oaks MN, US

A61F 13/00, A61F 2/52, A61F 2/12, A61K 9/14

424422, 424484, 424486, 623 7, 623 8

Compositions of cross-linked polyvinylpyrrolidone (PVP) are disclosed that are generally in the form of an elastic, hydrophilic, water-insoluble viscous cohesive mass of material that has many important medical uses including uses as a filler for implants. The present invention also involves a process for producing such compositions.

5295980, Mar 22, 1994

Sep 30, 1991

7/768010

Robert A. Ersek - Austin TX

A61M 532

604272

A universal infusion/aspiration cannula system includes a generally rounded tubular cannula member having a conduit or tubular portion provided with a rounded, partially, open, blunt insertion tip and a proximal end adaptable to standard fittings. The cannula alone allows for the blunt atraumatic dissection through intervening tissues and upon withdrawal, the simultaneous infusion of space filling substances, living tissues or hemostatic agents. A stilette member is provided which is operable within the cannula and the external dimensions of which approximate the internal dimensions of the cannula member wherein the stilette can be rotated or advanced and retracted as a saw to either amputate, cut or saw and grasp a biopsy specimen.

2005014, Jun 30, 2005

May 5, 2004

10/839559

Arthur Beisang - White Bear Lake MN, US
Robert Ersek - Austin TX, US
Arthur Beisang - North Oaks MN, US
Daniel Beisang - North Oaks MN, US

Intellectual Property International, Inc. - Las Vegas NV

A61F002/12, A61F002/04

623008000, 623023710, 523113000

Compositions of heat treated, cross-linked polyvinylpyrrolidone (PVP) are disclosed that are generally in the form of an elastic, hydrophilic, water insoluble viscous cohesive mass of material that has many important medical uses including uses as a filler for implants. The present invention also involves a process for producing such compositions.

4596250, Jun 24, 1986

Nov 14, 1984

6/671410

Arthur A. Beisang - Little Canada MN
Robert A. Ersek - Austin TX
Arthur A. Beisang - Roseville MN

Genetic Laboratories, Inc. - St. Paul MN

A61F 708, A61F 710

128402

A temperature control device containing a mixture of de-ionized water, propylene glycol, polysaccharides and plant gum for providing a moldable pillow-like surface for cooling/heating and positioning body organs or parts. A multi-layered container including an insulator, a radiant heat reflecting layer and a liquid impermeable outer layer permit autoclaving and provide directional cooling/heating. The inclusion of appropriate phase change chemicals or reciprocal ion-type chemicals or metal particles facilitate the stabilization of temperature over a predetermined temperature range.

4422759, Dec 27, 1983

May 4, 1981

6/260078

Daniel G. Holman - Blaine MN
Robert A. Ersek - Austin TX
Arthur A. Beisang - Roseville MN

G01J 102

356243

A photographic accessory, for application to a body surface and other medical and scientific uses, having dimensional graduations and color patches to facilitate correlation of photographic data with the actual size and color of the surface in question.