Andrew Hollis Proctor

US Patent:

6432067, Aug 13, 2002

Filed:

Sep 3, 1999

Appl. No.:

09/390032

Inventors:

Roy W. Martin - Seattle WA
Lawrence A. Crum - Seattle WA
Shahram Vaezy - Seattle WA
Stephen J. Carter - Seattle WA
W. Scott Helton - Seattle WA
Michael Gaps - Seattle WA
Peter J. Kaczkowski - Seattle WA
Andrew Proctor - Seattle WA
George Keilman - Woodinville WA

Assignee:

University of Washington - Seatlle WA
Sonic Concepts, Inc. - Woodinville WA

International Classification:

A61N 700

US Classification:

601 2, 601 3

Abstract:

Methods and apparatus for enabling substantially bloodless surgery and for stemming hemorrhaging. High intensity focused ultrasound (âHIFUâ) is used to form cauterized tissue regions prior to surgical incision, for example, forming a cauterized tissue shell around a tumor to be removed. The procedure is referred to as âpresurgical volume cauterization. â In one embodiment, the method is particularly effective for use in surgical lesion removal or resection of tissue having a highly vascularized constitution, such as the liver or spleen, and thus a propensity for hemorrhaging. In further embodiments, methods and apparatus for hemostasis using HIFU is useful in both surgical, presurgical, and medical emergency situations. In an apparatus embodiment, a telescoping, acoustic coupler is provided such that depth of focus of the HIFU energy is controllable. In other embodiments, apparatus characterized by portability are demonstrated, useful for emergency medical situations.

US Patent:

6500133, Dec 31, 2002

Filed:

Dec 1, 2000

Appl. No.:

09/728100

Inventors:

Roy W. Martin - Seattle WA
Mark D. Brentnall - San Diego CA
Andrew H. Proctor - Duvall WA

Assignee:

University of Washington - Seattle WA

International Classification:

A61N 702

US Classification:

601 3, 310335

Abstract:

A medical instrument uses solid tapered cones mounted to a preferably concave, spherically curved, piezoelectric ultrasound transducer which focuses and concentrates the ultrasound energy to a narrow tip so very high levels of ultrasound can be delivered to the tissue adjacent to the tip. Ultrasound matching layers or variable curvature geometries are employed at the tip aid in transferring the energy from the tip to the tissue.

US Patent:

6666835, Dec 23, 2003

Filed:

Mar 8, 2002

Appl. No.:

10/094451

Inventors:

Roy W. Martin - Anacortos WA
Andrew Hollis Proctor - Duvall WA

Assignee:

University of Washington - Seattle WA

International Classification:

A61H 100

US Classification:

601 2

Abstract:

A medical instrument uses solid tapered cones mounted to a preferably concave, spherically curved, piezoelectric ultrasound transducer which focuses and concentrates the ultrasound energy to a narrow tip so very high levels of ultrasound can be delivered to the tissue adjacent to the tip. Ultrasound matching layers or variable curvature geometries are employed at the tip aid in transferring the energy from the tip to the tissue. Alternative embodiments employing cooling technology are also described.

US Patent:

20030018255, Jan 23, 2003

Filed:

Jun 13, 2002

Appl. No.:

10/171149

Inventors:

Roy Martin - Seattle WA, US
Lawrence Crum - Seattle WA, US
Shahram Vaezy - Seattle WA, US
Stephen Carter - LaConner WA, US
W. Helton - Kirkland WA, US
Michael Gaps - Seattle WA, US
Peter Kaczkowski - Seattle WA, US
Andrew Proctor - Duvall WA, US
George Keilman - Woodinville WA, US

International Classification:

A61B008/00

US Classification:

600/437000

Abstract:

Methods and apparatus for enabling substantially bloodless surgery and for stemming hemorrhaging. High intensity focused ultrasound (“HIFU”) is used to form cauterized tissue regions prior to surgical incision, for example, forming a cauterized tissue shell around a tumor to be removed. The procedure is referred to as “presurgical volume cauterization.” In one embodiment, the method is particularly effective for use in surgical lesion removal or resection of tissue having a highly vascularized constitution, such as the liver or spleen, and thus a propensity for hemorrhaging. In further embodiments, methods and apparatus for hemostasis using HIFU is useful in both surgical, presurgical, and medical emergency situations. In an apparatus embodiment, a telescoping, acoustic coupler is provided such that depth of focus of the HIFU energy is controllable. In other embodiments, apparatus characterized by portability are demonstrated, useful for emergency medical situations.

US Patent:

63157411, Nov 13, 2001

Filed:

Sep 3, 1999

Appl. No.:

9/390506

Inventors:

Roy W. Martin - Seattle WA
Lawrence A. Crum - Seattle WA
Shahram Vaezy - Seattle WA
Stephen J. Carter - Seattle WA
W. Scott Helton - Seattle WA
Michael Gaps - Seattle WA
Peter J. Kaczkowski - Seattle WA
Andrew Proctor - Seattle WA
George Keilman - Woodinville WA

International Classification:

A61B 1722

US Classification:

601 3

Abstract:

Methods and apparatus for enabling substantially bloodless surgery and for stemming hemorrhaging. High intensity focused ultrasound ("HIFU") is used to form cauterized tissue regions prior to surgical incision, for example, forming a cauterized tissue shell around a tumor to be removed. The procedure is referred to as "presurgical volume cauterization. " In one embodiment, the method is particularly effective for use in surgical lesion removal or resection of tissue having a highly vascularized constitution, such as the liver or spleen, and thus a propensity for hemorrhaging. In further embodiments, methods and apparatus for hemostasis using HIFU is useful in both surgical, presurgical, and medical emergency situations. In an apparatus embodiment, a telescoping, acoustic coupler is provided such that depth of focus of the HIFU energy is controllable. In other embodiments, apparatus characterized by portability are demonstrated, useful for emergency medical situations.

US Patent:

52297993, Jul 20, 1993

Filed:

Mar 19, 1992

Appl. No.:

7/857083

Inventors:

Fred E. Silverstein - Seattle WA
Andrew H. Proctor - Duvall WA

Assignee:

Silversquare - Seattle WA

International Classification:

G03B 2300

US Classification:

353120

Abstract:

A collapsible slide carousel which allows for more efficient storage and transport thereof. The collapsible slide carousel includes an upper portion, a lower portion and a plurality of slide dividers pivotally secured to the upper and lower portions such that the slides can be positioned in an erect position or a collapsed position. In the erect position the slides are disposed substantially vertically as in a conventional carousel such that the slides can be viewed utilizing a conventional carousel projector. Alternatively, in the collapsed position the slides are disposed in an angular position overlapping one another in a domino-like manner allowing for more efficient storage and transportation of the carousel. The upper portion of the carousel is rotatably disposed with respect to the lower portion such that the carousel can be adjusted from the erect position to the collapsed position, and vice versa, by rotating the upper portion with respect to the lower portion. In the erect position the upper portion is displaced from the lower portion and in the collapsed position the upper portion is disposed adjacent the lower portion.

US Patent:

6007499, Dec 28, 1999

Filed:

Oct 31, 1997

Appl. No.:

8/961972

Inventors:

Roy W. Martin - Seattle WA
Lawrence A. Crum - Seattle WA
Shahram Vaezy - Seattle WA
Stephen J. Carter - La Conner WA
W. Scott Helton - Kirkland WA
Michael Gaps - Seattle WA
Peter J. Kaczkowski - Seattle WA
Andrew Proctor - Duvall WA
George Keilman - Woodinville WA

Assignee:

University of Washington - Seattle WA

International Classification:

A61B 1722

US Classification:

601 3

Abstract:

Methods and apparatus for enabling substantially bloodless surgery and for stemming hemorrhaging. High intensity focused ultrasound ("HIFU") is used to form cauterized tissue regions prior to surgical incision, for example, forming a cauterized tissue shell around a tumor to be removed. The procedure is referred to as "presurgical volume cauterization. " In one embodiment, the method is particularly effective for use in surgical lesion removal or resection of tissue having a highly vascularized constitution, such as the liver or spleen, and thus a propensity for hemorrhaging. In further embodiments, methods and apparatus for hemostasis using HIFU is useful in both surgical, presurgical, and medical emergency situations. In an apparatus embodiment, a telescoping, acoustic coupler is provided such that depth of focus of the HIFU energy is controllable. In other embodiments, apparatus characterized by portability are demonstrated, useful for emergency medical situations.

US Patent:

51781506, Jan 12, 1993

Filed:

Feb 25, 1991

Appl. No.:

7/660525

Inventors:

Fred E. Silverstein - Seattle WA
Andrew H. Proctor - Duvall WA

International Classification:

A61B 812

US Classification:

12866206

Abstract:

A miniature ultrasound imaging probe that may be delivered through the biopsy channel of an endoscope. The probe includes a probe tip mounted at the distal end of a flexible catheter. The probe tip includes a transducer body mounted on the distal end of a distal actuating rod with the transducer body carrying an ultrasound transducer. The distal actuating rod is mounted on the distal end of a plurality of concentric, springs wound in opposite directions extending concentrically through the catheter and terminating in a proximal actuating rod. A flexible bag filled with an acoustic coupling fluid is mounted at the distal end of the catheter. The bag surrounds the transducer body to isolate it from the external environment and retain the acoustic coupling fluid. When the probe is to be inserted through a narrow passage, the proximal actuating rod is advanced into the catheter to extend the transducer body against the flexible bag. As a result, the bag elongates and its width is reduced.