Mark Anthony Richardson

US Patent:

6352515, Mar 5, 2002

Filed:

Dec 13, 1999

Appl. No.:

09/459814

Inventors:

David M. Anderson - Temecula CA
Wayne E. Cornish - Fallbrook CA
Marc Mehrzad Jalisi - Temecula CA
Nancy Nicotra - Temecula CA
Mark T. Richardson - Escondido CA

Assignee:

Advanced Cardiovascular Systems, Inc. - Santa Clara CA

International Classification:

A61B 500

US Classification:

600585, 604523

Abstract:

The present invention is directed to an intracorporeal device, preferably a guidewire, and method for making the same. The device, has proximal and distal ends and includes an elongated high strength proximal portion having proximal and distal ends. The device further includes a distal portion having proximal and distal ends. The distal end of the proximal portion and the proximal end of the distal portion are connected by a connector. The distal portion is formed of a superelastic alloy composition. Preferably, the connector is also formed of the superelastic alloy composition. The superelastic alloy composition includes, in atomic percent, from about 28 to about 52% nickel, from about 48 to about 52% titanium, and up to about 20% of at least one alloying element selected from the group consisting of palladium, chromium, and hafnium.

US Patent:

6390993, May 21, 2002

Filed:

Dec 1, 1998

Appl. No.:

09/203140

Inventors:

Wayne E. Cornish - Oceanside CA
John Schreiner - Hemet CA
James Jacobs - Mountain View CA
Marc M. Jalisi - Temecula CA
Mark Richardson - Escondido CA

Assignee:

Advanced Cardiovascular Systems, Inc. - Santa Clara CA

International Classification:

A61B 500

US Classification:

600585, 604525

Abstract:

The invention is directed to a guidewire having a distal section with multiple distally tapered core segments with at least two contiguous distally tapering core segments in which the most distal tapered core segment preferably has a greater degree of taper than the proximally contiguous tapered core segment. The invention is also directed to an elongated intracorporeal device, preferably a guidewire or section thereof, that has a core member or the like with a plurality of contiguous tapered segments having taper angles that are configured to produce a linear change in stiffness over a longitudinal section of the device. The device may also have a core section with a continuously changing taper angle to produce a curvilinear profile that preferably is configured to produce a linear change in stiffness of the core over a longitudinal section of the device.

US Patent:

6402706, Jun 11, 2002

Filed:

Dec 30, 1998

Appl. No.:

09/223223

Inventors:

Mark Richardson - Escondido CA
Emmanuel C. Biagtan - Temecula CA
Wayne E. Cornish - Oceanside CA

Assignee:

Advanced Cardiovascular Systems, Inc. - Santa Clara CA

International Classification:

A61B 500

US Classification:

600585

Abstract:

The invention is directed to a guide wire having at least two different polymeric jackets that impart different handling characteristics to the portions of the guide wire they surround. Preferably, the guide wire may have jackets of different grades of polymer, such as polyurethane 55 D and 90 A. Alternatively, the guide wire may have jackets of different types of polymers such as polyurethane and polytetrafluoroethylene, or may have a single polymeric jacket with continuously varying properties along its length. The invention also comprises methods of making such guide wires.

US Patent:

6428512, Aug 6, 2002

Filed:

Oct 10, 2000

Appl. No.:

09/686143

Inventors:

David M. Anderson - Temecula CA
Mark T. Richardson - Escondido CA
Gina Eileen Stephens - Tokyo, JP

Assignee:

Advanced Cardiovascular Systems, Inc. - Santa Clara CA

International Classification:

A61M 2500

US Classification:

60417001, 604529, 600434, 600585

Abstract:

A guidewire having an elongated core having a radiopaque marker on a distal portion of the core and a plurality of indicia on the proximal extremity of the core to facilitate measurement of an intracorporeal location such as a stenotic region within a patients coronary artery. The guidewire is first positioned within the patient with the distal radiopaque marker at one end of the intracorporeal location and an indicia representing a base reference point is noted on the proximal portion of the guidewire which extends out of the patient. The guidewire is then moved so that the distal radiopaque marker is located at or adjacent to the other end of the intracorporeal location and another indicia on the proximal portion of the guidewire adjacent to the reference point. The distance between the two indicia on the proximal extremity of the guidewire is a measurement of intracorporeal length.

US Patent:

6451026, Sep 17, 2002

Filed:

Dec 13, 2000

Appl. No.:

09/736854

Inventors:

Emmanuel C. Biagtan - Temecula CA
Shruti Bajaj - Temecula CA
Wayne E. Cornish - Fallbrook CA
Brandon Gosiengfiao - Temecula CA
Mark Richardson - Escondido CA
Peter J. DAquanni - San Luis Obispo CA

Assignee:

Advanced Cardiovascular Systems, Inc. - Santa Clara CA

International Classification:

A61B 500

US Classification:

606108, 600585

Abstract:

An elongate intracorporeal guiding device for providing access to desired sites within a patients body. The device, which may be configured as a guidewire, is constructed so as to be compatible with sensitive imaging methods such as MRI and the like and not create imaging artifacts or interference with such imaging methods. The guiding device may be constructed so as to have a distal working section that has minimal metallic content or minimal content of materials that can cause imaging artifacts or interference with MRI imaging, other sensitive imaging methods or the like. The device may also have a dock exchange system to allow attachment and detachment of an extension guidewire.

US Patent:

6491648, Dec 10, 2002

Filed:

Dec 21, 2000

Appl. No.:

09/748299

Inventors:

Wayne E. Cornish - Fallbrook CA
Mark T. Richardson - Escondido CA
Lawrence E. Brennan - Temecula CA
Marc M. Jalisi - Temecula CA
David M. Anderson - Temecula CA
Mo Jafari - Murrieta CA
Sepehr Fariabi - Fremont CA

Assignee:

Advanced Cardiovascular Systems, Inc. - Santa Clara CA

International Classification:

A61B 500

US Classification:

600585

Abstract:

A guidewire for guiding a medical device within a patient which has an elongate core member with a flexible body member disposed about and secured to a distal core section and a flexible core segment or flexible core segment which has a first pair of opposed faces which define a first transverse dimension that tapers from a first value to a second larger value and a second pair of opposed faces which define a second transverse dimension that tapers from a first value to a second smaller value.

US Patent:

6494847, Dec 17, 2002

Filed:

Feb 28, 2001

Appl. No.:

09/796777

Inventors:

Mark Richardson - Escondido CA
Emmanuel C. Biagtan - Temecula CA
Wayne E. Cornish - Oceanside CA

Assignee:

Advanced Cardiovascular Systems, Inc. - Santa Clara CA

International Classification:

A61B 500

US Classification:

600585, 72135

Abstract:

The invention is directed to a guide wire having at least two different polymeric jackets that impart different handling characteristics to the portions of the guide wire they surround. Preferably, the guide wire may have jackets of different grades of polymer, such as polyurethane 55D and 90A. Alternatively, the guide wire may have jackets of different types of polymers such as polyurethane and polytetrafluoroethylene, or may have a single polymeric jacket with continuously varying properties along its length. The invention also comprises methods of making such guide wires.

US Patent:

6524301, Feb 25, 2003

Filed:

Dec 21, 2000

Appl. No.:

09/748294

Inventors:

W. Stan Wilson - Missoula MT
Robert C. Esselstein - Fallbrook CA
Wayne E. Cornish - Fallbrook CA
Mark T. Richardson - Escondido CA

Assignee:

Advanced Cardiovascular Systems, Inc. - Santa Clara CA

International Classification:

A61M 2500

US Classification:

604523

Abstract:

The invention is directed to an guide wire for intraluminal deployment of a medical device within a patient, the guide wire having an elongate core member with an intermediate core section comprising a plurality of contiguous segments in alignment with the longitudinal axis of the core member with alternating flexible and rigid core segments, so that the articulated section bends in a discontinuous, discrete manner when advanced through a curved blood vessel or other body lumen within the patient. When an obstruction on a vessel wall causes the catheter or other coaxial device to be impeded, the guide wire and intermediate core section may alternately be advanced and retracted a short distance through the catheter distal tip causing a ânoddingâ motion of the catheter tip while the catheter is pushed through the vessel, so as to avoid and bypass the vessel obstruction.