Michael E Paris

US Patent:

6517518, Feb 11, 2003

Filed:

May 21, 2001

Appl. No.:

09/861728

Inventors:

John E. Nash - Chester Springs PA
Gregory Walters - Malvern PA
Douglas G. Evans - Downingtown PA
David Szabo - Trappe PA
Michael Paris - Hatfield PA

Assignee:

Kensey Nash Corporation - Exton PA

International Classification:

A61M 5178

US Classification:

60416402, 604158

Abstract:

An attachment tool to facilitate the attachment of a catheter or similar elongated instrument to a guide-wire or other elongated guide member, without requiring access to either end of said wire or member. Said tool providing repeatable and reliable alignment of components to be attached, while being operated with a single hand. The tool further facilitates the attachment of a plurality of catheters or instruments to a single wire or member.

US Patent:

6814718, Nov 9, 2004

Filed:

Dec 19, 2001

Appl. No.:

10/025506

Inventors:

Paul Tashjian - King of Prussia PA
Michael W. Paris - Hatfield PA
Peter W. J. Hinchliffe - Downington PA

Assignee:

Rex Medical, L.P - Conshohocken PA

International Classification:

A61M 2500

US Classification:

604264, 604 43, 604107, 604509, 604510

Abstract:

A dialysis catheter comprising a catheter body having a proximal portion, a distal portion, a first longitudinally extending central lumen configured to deliver blood, and at least three longitudinally extending lumens positioned radially of the central lumen and configured to withdraw blood from a patient. At least one blood delivery opening is formed in the distal portion of the catheter body and in fluid communication with the first lumen and configured for passage of blood therethrough. At least three blood withdrawal openings are formed in the outer wall of the catheter body, wherein each of the openings is in fluid communication with one of the at least three lumens and is configured for passage of blood from a patient.

US Patent:

6858019, Feb 22, 2005

Filed:

Dec 19, 2001

Appl. No.:

10/025505

Inventors:

Paul Tashjian - King of Prussia PA, US
Michael W. Paris - Hatfield PA, US
Peter W. J. Hinchliffe - Downington PA, US

Assignee:

Rex Medical, L.P. - Conshohocken PA

International Classification:

A61M003/00
A61M031/00

US Classification:

604 43, 604508

Abstract:

A method of inserting a dialysis catheter into a patient comprising the steps of inserting a guidewire into the jugular vein of the patient through the superior vena cava and into the inferior vena cava, providing a trocar having a lumen and a dissecting tip, inserting the trocar to enter an incision in the patient and to create a subcutaneous tissue tunnel, threading the guidewire through the lumen of the trocar so the guidewire extends through the incision, providing a dialysis catheter having first and second lumens, removing the trocar, and inserting the dialysis catheter over the guidewire through the incision and through the jugular vein and superior vena cava into the right atrium.

US Patent:

6872192, Mar 29, 2005

Filed:

Aug 28, 2002

Appl. No.:

10/230312

Inventors:

John E. Nash - Chester Springs PA, US
Gregory Walters - Malvern PA, US
Douglas G. Evans - Downingtown PA, US
David Szabo - Trappe PA, US
Michael Paris - Hatfield PA, US

Assignee:

Kensey Nash Corporation - Exton PA

International Classification:

A61M005/178

US Classification:

60416402, 604158

Abstract:

An attachment tool to facilitate the attachment of a catheter or similar elongated instrument to a guide-wire or other elongated guide member, without requiring access to either end of said wire or member. Said tool providing repeatable and reliable alignment of components to be attached, while being operated with a single hand. The tool further facilitates the attachment of a plurality of catheters or instruments to a single wire or member.

US Patent:

7011645, Mar 14, 2006

Filed:

Oct 24, 2002

Appl. No.:

10/279466

Inventors:

Michael W. Paris - Hatfield PA, US
Paul Tashjian - King of Prussia PA, US
Peter W. J. Hinchliffe - Campbell Hall NY, US

Assignee:

Rex Medical, L.P. - Conshohocken PA

International Classification:

A61M 1/00
A61M 5/00
A61M 25/00

US Classification:

604 34, 604250, 604284

Abstract:

A catheter for delivering and withdrawing blood from a patient's body comprising a catheter body having a distal portion, a central return lumen extending from a proximal portion of the catheter body to the distal portion to allow blood passage therethrough, at least three longitudinally extending intake lumens independent of the return lumen and radially displaced with respect to the return lumen, and means for enabling simultaneous cut off of fluid flow to the at least three longitudinally extending lumens.

US Patent:

7074213, Jul 11, 2006

Filed:

Aug 23, 2004

Appl. No.:

10/924075

Inventors:

Paul Tashjian - King of Prussia PA, US
Michael W. Paris - Hatfield PA, US
Peter W. J. Hinchliffe - Downington PA, US

Assignee:

Rex Medical, L.P. - Conshohocken PA

International Classification:

A61M 25/00

US Classification:

604264

Abstract:

A dialysis catheter comprising a catheter body having a proximal portion, a distal portion, a first longitudinally extending central lumen configured to deliver blood, and at least three longitudinally extending lumens positioned radially of the central lumen and configured to withdraw blood from a patient. At least one blood delivery opening is formed in the distal portion of the catheter body and in fluid communication with the first lumen and configured for passage of blood therethrough. At least three blood withdrawal openings are formed in the outer wall of the catheter body, wherein each of the openings is in fluid communication with one of the at least three lumens and is configured for passage of blood from a patient.

US Patent:

7077829, Jul 18, 2006

Filed:

Oct 24, 2002

Appl. No.:

10/279468

Inventors:

Michael W. Paris - Hatfield PA, US
Paul Tashjian - King of Prussia PA, US
Peter W. J. Hinchliffe - Campbell Hall NY, US

Assignee:

Rex Medical, L.P. - Conshohocken PA

International Classification:

A61M 25/00
A61M 5/178

US Classification:

604264, 60416409

Abstract:

A dialysis catheter comprising a first portion having a first diameter, an elongated distal portion having a second diameter smaller than the first diameter, and a transition region between the first portion and distal portion. A first longitudinally extending central lumen configured to deliver blood terminates in an opening in the distal portion. At least two independent longitudinally extending lumens are positioned radially of the first lumen, configured to withdraw blood from a patient, and terminate in a longitudinally directed opening in the transition portion.

US Patent:

7097635, Aug 29, 2006

Filed:

Nov 6, 2002

Appl. No.:

10/288788

Inventors:

Michael W. Paris - Hatfield PA, US
Paul Tashjian - King of Prussia PA, US
Peter W. J. Hinchliffe - Campbell NY, US

Assignee:

Rex Medical, L.P. - Conshohocken PA

International Classification:

A61M 5/178

US Classification:

60416409

Abstract:

An apparatus for passing a guidewire through a subcutaneous tissue tunnel to enable over-the wire insertion of a catheter through the tissue tunnel. The apparatus comprises an elongated member having a distal end portion having a tip configured to advance through the tissue tunnel and an opening extending longitudinally with respect to the apparatus and dimensioned to receive the guidewire. The guidewire is inserted through the opening to pass the guidewire through the tunnel to enable subsequent insertion of the catheter.