ROBERT JR MASARIK
Real Estate Commission in Natrona Heights, PA

6322535, Nov 27, 2001

Apr 1, 1999

9/282941

Mark W. Hitchins - Sewickley PA
Edward J. Rhinehart - Monroeville PA
Robert J. Masarik - Natrona Heights PA

Medrad, Inc. - Indianola PA

A61M 3700

604154

The present invention provides prefillable syringes and injectors for use therewith that expand and/or facilitate a variety of medical procedures involving the injection of a liquid medium. In several embodiments, the present syringes and injectors enable the use of current syringe materials at higher pressures than previously attainable or the use of other materials not previously usable with current high pressure-syringe and injector designs. In one embodiment, a syringe comprises an elongated cylindrical main body having a first pair and a second pair of mounting flanges encompassing collectively an arcuate length equal to at least approximately 180. degree. of the circumference of the rear portion of the cylindrical main body for releasably mounting the syringe in a desired position relative to the front wall of the injector housing. Injectors for use with such syringes comprise a housing having a front wall and a retainer on the front wall which cooperates with the first and second pairs of mounting flanges of the syringe to releasably mount the syringe on the injector.

5944694, Aug 31, 1999

Nov 12, 1996

8/748230

Mark W. Hitchins - Sewickley PA
Edward J. Rhinehart - Monroeville PA
Robert J. Masarik - Natrona Heights PA

Medrad, Inc. - Indianola PA

A61M 3700

604154

The present invention provides prefillable syringes and injectors for use therewith that expand and/or facilitate a variety of medical procedures involving the injection of a liquid medium. In several embodiments, the present syringes and injectors enable the use of current syringe materials at higher pressures than previously attainable or the use of other materials not previously usable with current high pressure-syringe and injector designs. In one embodiment, a syringe comprises an elongated cylindrical main body having a first pair and a second pair of mounting flanges encompassing collectively an arcuate length equal to at least approximately 180. degree. of the circumference of the rear portion of the cylindrical main body for releasably mounting the syringe in a desired position relative to the front wall of the injector housing. Injectors for use with such syringes comprise a housing having a front wall and a retainer on the front wall which cooperates with the first and second pairs of mounting flanges of the syringe to releasably mount the syringe on the injector.

6017330, Jan 25, 2000

Jan 28, 1999

9/239164

Mark W. Hitchins - Sewickley PA
Edward J. Rhinehart - Monroeville PA
David M. Reilly - Glenshaw PA
Anthony S. McCoppin - Butler PA
Thomas L. Dufalla - McMurray PA
Robert J. Masarik - Natrona Heights PA

Medrad, Inc. - Indianola PA

A61M 500

604218

The plunger systems for use in an injector-actuated syringe of the present invention include a dynamic wedge seal which improves the sealing engagement between the plunger cover and syringe barrel, and flexible capture members extending from the rear surface of the plunger which permit the engagement and disengagement of the plunger from the injector drive means at any plunger position within the syringe. Further, the plunger systems include a contrast saving tip which expells the injection liquid from the syringe tip.

5873861, Feb 23, 1999

Nov 12, 1996

8/748258

Mark W. Hitchins - Sewickley PA
Edward J. Rhinehart - Monroeville PA
David M. Reilly - Glenshaw PA
Anthony S. McCoppin - Butler PA
Robert J. Masarik - Natrona Heights PA

Medrad, Inc. - Indianola PA

A61M 500

604218

The plunger systems for use in an injector-actuated syringe of the present invention include a dynamic wedge seal which improves the sealing engagement between the plunger cover and syringe barrel, and flexible capture members extending from the rear surface of the plunger which permit the engagement and disengagement of the plunger from the injector drive means at any plunger position within the syringe. Further, the plunger systems include a contrast saving tip which expells the injection liquid from the syringe tip.

6984222, Jan 10, 2006

Nov 9, 1999

09/436612

Mark W. Hitchins - Sewickley PA, US
Edward J. Rhinehart - Monroeville PA, US
David M. Reilly - Glenshaw PA, US
Anthony S. McCoppin - Butler PA, US
Thomas L. Dufalla - McMurray PA, US
Robert J. Masarik - Natrona Heights PA, US

Medrad, Inc. - Indianola PA

A61M 5/315

604218

The plunger systems for use in an injector-actuated syringe of the present invention include a dynamic wedge seal which improves the sealing engagement between the plunger cover and syringe barrel, and flexible capture members extending from the rear surface of the plunger which permit the engagement and disengagement of the plunger from the injector drive means at any plunger position within the syringe. Further, the plunger systems include a contrast saving tip which expells the injection liquid from the syringe tip.