William Mark Mcpherson, 63Riverview, FL

7087034, Aug 8, 2006

Sep 19, 2002

10/247601

William E. McPherson - Tampa FL, US
Walter Smithwick - Jacksonville FL, US

A61M 5/00
A61B 5/02
A61F 2/06

604 8, 604 9601, 600504, 623 131

A vascular shunt apparatus () includes a tubular member having first and second end portions () and an aperture extending through the first and second end portions (). A transducer () can be associated with the tubular member to provide a signal in response to the flow of fluid through the tubular member. One or both of the end portions () also can be adapted to form respective sealing connections with different parts of a patient's vascular system.

5281205, Jan 25, 1994

Mar 11, 1992

7/850695

William E. McPherson - Tampa FL

A61M 2500

604267

A vascular access system and clearing method. A vascular access system is provided comprising an implantable access port for receiving medication transdermally, a catheter connected to an outlet in said port for infusing that medication into the blood stream, a wire for clearing the catheter of an obstruction, and a non-coring needle for inserting the wire transdermally into the access port and catheter. The access port includes a chamber for receiving medication, the chamber having an outlet whose bottom portion is substantially flush with the bottom portion of the chamber outlet to promote emptying of the chamber and feeding the guide wire into the outlet. The catheter is attached to the port by placing it over a cannula connected to the outlet and forcing a sleeve over the end of the catheter. An obstruction is cleared from the catheter by inserting the needle transdermally into the chamber, feeding the wire into the needle, tilting the needle so as to move the opening of the needle near the outlet of the chamber and feeding the wire from the opening of the needle through the outlet into the catheter to force all or a portion of the obstruction out of the way. The wire is then removed and an anti-fibrolitic material is injected transdermally to dissolve some or all of the remaining obstruction.

5573496, Nov 12, 1996

Jun 7, 1995

8/473447

William E. McPherson - Tampa FL
William B. Saye - Marietta GA
Eddie J. Reddick - Brentwood TN

A61B 1702
A61B 175

600217

A surgical retractor and method for use thereof. The retractor is comprised of an elongate shaft having at one end a screw made of coiled, round wire which terminates at a sharp point for attachment to an organ and a connector at the other end of the shaft. Preferably, the connector comprises an enlarged portion having a polygonal cross section for engagement by a wrench. The retractor is inserted into the peritoneal cavity of a patient through a laparoscopic port and the screw is threaded into the wall of the organ to be retracted, for example, the gallbladder. The organ is resected and thereafter drawn out of the cavity using the retractor.

5687739, Nov 18, 1997

Apr 30, 1996

8/641349

William E. McPherson - Tampa FL
John S. TenBarge - Clearwater FL

Interventional Concepts, Inc. - Tampa FL

A61B 1000

128754

An improved biopsy specimen cutter utilizes a wire loop, attached to a hand-manipulable trigger mechanism, for severing the tissue sample from the host. A removable dilator is insertable into the biopsy specimen cutter for the purpose of positioning the cutter adjacent the tissue to be removed, and after such placement, the dilator is withdrawn, the specimen cutter is advanced into the tissue, the trigger mechanism is retracted causing the loop to sever the tissue, and the specimen cutter and the specimen contained therein are withdrawn.

4335727, Jun 22, 1982

May 30, 1980

6/154880

William E. McPherson - Tampa FL

A61N 136

128419PG

A pacemaker assembly having a ventricular inhibited pacemaker unit set to produce a signal for application to a patient's heart at a first rate of time and a ventricular triggered pacemaker unit set to produce a signal for application to a patient's heart at a second rate of time lower than said first rate of time, both units being contained within a housing and being independently operative with respect to one another.

6048321, Apr 11, 2000

Oct 2, 1998

9/165054

William E. McPherson - Tampa FL
J. Stephen TenBarge - Clearwater FL

A61B 1000

600564

A guide assembly for performing a biopsy with a biopsy device having an elongated and substantially hollow cylindrical barrel is described. The guide assembly includes a bracket which is selectively movable relative to a base. The bracket has a longitudinal opening formed through a housing portion of the bracket into which the biopsy device may be mounted for guiding the biopsy device into desired tissue.

5437266, Aug 1, 1995

Jul 2, 1992

7/909223

William McPherson - Tampa FL
William B. Saye - Marietta GA
Eddie J. Reddick - Marietta GA

A61B 1702

600217

A surgical retractor and method for use thereof. The retractor is comprised of an elongate shaft having at one end a screw made of coiled, round wire which terminates at a sharp point for attachment to an organ and a connector at the other end of the shaft. Preferably, the connector comprises an enlarged portion having a polygonal cross section for engagement by a wrench. The retractor is inserted into the peritoneal cavity of a patient through a laparoscopic port and the screw is threaded into the wall of the organ to be retracted, for example, the gallbladder. The organ is resected and thereafter drawn out of the cavity using the retractor.