Charles A Simpson

US Patent:

6364905, Apr 2, 2002

Filed:

Jul 23, 1999

Appl. No.:

09/360423

Inventors:

Charles L. Simpson - Austin TX
Brian K. McIlroy - Georgetown TX
Lisa G. OConnor - Austin TX
Ivan Casagrande - Minas Gerais, BR
Stephen Westaby - Woodstock, GB

Assignee:

Sulzer Carbomedics Inc. - Austin TX

International Classification:

A61F 224

US Classification:

623 213, 623 215, 623 216, 623910

Abstract:

A bioprosthetic heart valve is disclosed. In a first aspect of the invention, a prosthetic heart valve comprises three mammalian heart valve leaflets, each valve leaflet including a full root length of tissue, the valve leaflets being affixed to one another to define a fluid flow passage, the fluid flow through which may be governed by the valve leaflets. In a second aspect the heart valve comprises a plurality of heart valve leaflets affixed to one another to define a fluid flow passage, the fluid flow through which may be governed by the valve leaflets; and a permanent trimming guide on at least one of the plurality of valve leaflets. In yet a third aspect of the invention, a bioprosthetic heart valve comprises a plurality of assembled parts, wherein the assembled parts are sutured together by hidden and locking stitches.

US Patent:

6797000, Sep 28, 2004

Filed:

Jan 18, 2002

Appl. No.:

10/051216

Inventors:

Charles L. Simpson - Austin TX
Brian K. McIlroy - Georgetown TX
Lisa G. OConnor - Austin TX
Ivan Casagrande - Minas Gerais, BR
Stephen Westaby - Woodstock, GB

Assignee:

Carbomedics Inc. - Austin TX

International Classification:

A61F 206

US Classification:

623 215, 623 21, 623 242

Abstract:

A bioprosthetic heart valve is disclosed. In a first aspect of the invention, a prosthetic heart valve comprises three mammalian heart valve leaflets, each valve leaflet including a full root length of tissue, the valve leaflets being affixed to one another to define a fluid flow passage, the fluid flow through which may be governed by the valve leaflets. In a second aspect the heart valve comprises a plurality of heart valve leaflets affixed to one another to define a fluid flow passage, the fluid flow through which may be governed by the valve leaflets; and a permanent trimming guide on at least one of the plurality of valve leaflets. In yet a third aspect of the invention, a bioprosthetic heart valve comprises a plurality of assembled parts, wherein the assembled parts are sutured together by hidden and locking stitches.

US Patent:

8480592, Jul 9, 2013

Filed:

Dec 23, 2009

Appl. No.:

12/645567

Inventors:

Rafal Chudzik - Peoria AZ, US
Jason G. Seiger - Gilbert AZ, US
Jennifer Smith - Mesa AZ, US
Charles Simpson - Westlake Village CA, US

Assignee:

C. R. Bard, Inc. - Murray Hill NJ

International Classification:

A61B 8/00
A61B 8/14
A61B 17/34
A61B 10/00

US Classification:

600461, 600437, 600458, 600459, 600462, 600464, 600562, 600564, 600567

Abstract:

A biopsy probe mechanism includes an elongate sample receiving member having a longitudinal axis and having a sample receiving notch. An elongate sample receiving member and a cutting cannula are movable relative to one another along a longitudinal axis between a first relative position and a second relative position. A first echogenic feature is established on the elongate sample receiving member and a second echogenic feature is established on the cutting cannula. The first echogenic feature is in longitudinal alignment with the second echogenic feature when the elongate sample receiving member and the cutting cannula are in the first relative position. The first echogenic feature is out of longitudinal alignment with the second echogenic feature when the elongate sample receiving member and the cutting cannula are in the second relative position.

US Patent:

20030213715, Nov 20, 2003

Filed:

May 14, 2002

Appl. No.:

10/145465

Inventors:

Gary Klepac - Hutto TX, US
Charles Simpson - Austin TX, US

International Classification:

A61L015/00

US Classification:

206/438000, 206/459500, 206/524800, 206/524500

Abstract:

The present invention provides a biological material package comprised of an enclosed compartment and a temperature sensor capable of sensing temperature extremes within the enclosed storage compartment. The temperature sensor is capable of providing a visual indication of a temperature extreme occurring within the enclosed compartment. The indication of the temperature extreme is visible from outside of the enclosed compartment, without opening the enclosed compartment.

US Patent:

44353693, Mar 6, 1984

Filed:

Jul 29, 1982

Appl. No.:

6/402977

Inventors:

Charles H. Simpson - Scottsdale AZ

International Classification:

C01G 5309

US Classification:

423147

Abstract:

A hydrometallurgical process for extracting nickel from comminuted nickel-bearing minerals. The process includes the steps of contacting the comminuting nickel-bearing minerals in an extraction zone with an aqueous solution having a concentration of chloride ions, metal ions and sulfuric acid at an elevated temperature and continuing the contact to form an extraction mixture slurry, including a liquid component comprising an aqueous solution containing extracted nickel and iron from the comminuted minerals dissolved therein and a solid tailings component; and, separating the liquid and solid components of the extraction mixture slurry.

US Patent:

42037271, May 20, 1980

Filed:

Nov 29, 1978

Appl. No.:

5/964742

Inventors:

Charles H. Simpson - Scottsdale AZ

International Classification:

C10L 910
C01B 1714

US Classification:

44 1SR

Abstract:

Raw coal containing sulfur impurities and water is ground in a vapor-tight extraction zone in contact with a combustible sulfur solvent at an elevated temperature. An extraction mixture slurry is formed which includes a liquid component comprising the solvent and sulfur impurities and a solid component comprising the comminuted, extracted coal. The liquid and solid components of the slurry are separated. At least a portion of the liquid component is preferably treated to separate sulfur. The liquid component is recycled to the extraction zone. If the solid slurry component has an undesirably high pyrite content, it is then reacted with a reagent to decompose the pyrites to water-soluble sulfur compounds and the reaction mixture is washed with water.

US Patent:

55340334, Jul 9, 1996

Filed:

Jun 5, 1995

Appl. No.:

8/462955

Inventors:

Charles L. Simpson - Austin TX

Assignee:

CarboMedics, Inc. - Austin TX

International Classification:

A61F 230

US Classification:

623 18

Abstract:

An orthopedic prosthetic implant having a pyrolytic carbon or ceramic articulating surface and a metallic sheath or shell interfacing with adjacent bone. The articulating surface and shell are attached to one another with a layer of resilient adhesive, such as polymethylmethacrylate (PMMA) which forms a shock absorbing layer between the pyrolytic carbon or ceramic parts and the metal parts. Also, a circumferential seal enclosing two adjacent articulating surfaces on adjacent implant parts. The invention further includes first and second implant parts having mating articulating surfaces, the first and second implant parts being joined by ligament structures. Ligament structures include bands or spring means connecting the first and second implant parts.

US Patent:

44392354, Mar 27, 1984

Filed:

Jun 14, 1982

Appl. No.:

6/388112

Inventors:

Charles H. Simpson - Scottsdale AZ

International Classification:

C22B 300
C22B 1104
C01G 5500
C01G 700

US Classification:

75101R

Abstract:

A process for removing precious metals from comminuted ores. The process comprises the steps of first contacting comminuted ore with a primary acidic hypochlorite solution, separating the ore from the primary hypochlorite solution and then contacting the separated ore with an aqueous hypochlorite solution having a pH greater than 7.