Donald S Mamayek

US Patent:

6358211, Mar 19, 2002

Filed:

Oct 12, 1999

Appl. No.:

09/416125

Inventors:

Donald S. Mamayek - Mountain View CA

Assignee:

Scimed Life Systems, Inc. - Maple Grove MN

International Classification:

A61B 814

US Classification:

600459, 600462, 600466

Abstract:

The present invention provides exemplary ultrasound lucent apparatus and methods for use in a wide range of invasive imaging and surgical procedures. In one exemplary embodiment, an apparatus ( ) comprises an elongate wire body ( ) having an outer surface and a longitudinal axis ( ). The wire body includes a plurality of corner reflectors ( ) disposed on an embossed portion ( ) of the outer surface. The wire body is adapted to be inserted into a body lumen or a patient vasculature. In this manner, use of corner reflector technology enhances the ultrasound reflective nature to increase the acoustical reflectivity of the wire body.

US Patent:

6413222, Jul 2, 2002

Filed:

Apr 13, 2000

Appl. No.:

09/548860

Inventors:

Anthony Pantages - Los Altos CA
Donald S. Mamayek - Mountain View CA

Assignee:

Boston Scientific Corporation - Natick MA

International Classification:

A61B 814

US Classification:

600466, 606159

Abstract:

Rotating element catheters and catheter assemblies employ clutch assemblies for preventing rotational energy from being transmitted from a motor drive unit to the catheter element under defined circumstances. The catheter assembly includes an elongate member in which there is disposed a rotatable catheter drive cable. The catheter drive cable may have an operative element, e. g. , an ultrasonic transducer or an artherectomy blade, distally mounted thereon for providing diagnostic or therapeutic functions to the physician. To control the rotation of the catheter drive shaft, the clutch assembly is configured such that the catheter drive shaft is operated in a drive mode (i. e. , it is allowed to rotate) and in a release mode (i. e. , it is prevented from rotating). The clutch assembly can be formed from a driven member and a driver member, which cooperate with each other, such that the driven and driver members are rotatably engaged with each other before an applied torque exceeds the critical magnitude, and rotatably unengaged with each other after the applied torque exceeds the critical magnitude.

US Patent:

6450965, Sep 17, 2002

Filed:

Apr 13, 2001

Appl. No.:

09/834684

Inventors:

Eric Williams - Fairfield CA
Thomas C. Moore - Fremont CA
David A. White - San Jose CA
Donald S. Mamayek - Mountain View CA
Donald Masters - Sunnyvale CA
Martin Belef - San Jose CA
Veijo Suorsa - Sunnyvale CA

Assignee:

SciMed Life Systems, Inc. - Maple Grove MN

International Classification:

A61B 812

US Classification:

600467, 600439, 607122

Abstract:

A catheter assembly includes an elongate catheter body having a proximal end and a distal end with a drive cable disposed therein, the drive cable having a proximal end and a distal end, and rotatable relative to the catheter body. A first electro-magnetic element is disposed proximate the distal end of the catheter, and a second electro-magnetic element disposed proximate the distal end of the drive cable and in electrical communication with an operative element mounted at the end of the drive cable, the first and second electro-magnetic elements forming an inductive coupler. The catheter assembly can include various other distal operative elements, which are in communication with corresponding proximal operative elements via transmission lines embedded within the wall of the catheter body.

US Patent:

6454717, Sep 24, 2002

Filed:

Apr 13, 2000

Appl. No.:

09/548564

Inventors:

Anthony Pantages - Los Altos CA
Donald S. Mamayek - Mountain View CA

Assignee:

Scimed Life Systems, Inc. - Maple Grove MN

International Classification:

A61B 812

US Classification:

600466, 604 22, 606159

Abstract:

Rotating element catheters and catheter assemblies employ clutch assemblies for preventing rotational energy from being transmitted from a motor drive unit to the catheter element under defined circumstances. The catheter assembly includes an elongate member in which there is disposed a rotatable catheter drive cable. The catheter drive cable may have an operative element, e. g. , an ultrasonic transducer or an artherectomy blade, distally mounted thereon for providing diagnostic or therapeutic functions to the physician. To control the rotation of the catheter drive shaft, the clutch assembly is configured such that the catheter drive shaft is operated in a drive mode (i. e. , it is allowed to rotate) and in a release mode (i. e. , it is prevented from rotating). The clutch assembly includes a driver member comprising a first cylindrical body, and a driven member comprising a second cylindrical body in a concentric relationship with the first cylindrical body.

US Patent:

6475224, Nov 5, 2002

Filed:

Apr 13, 2000

Appl. No.:

09/548690

Inventors:

Anthony Pantages - Los Altos CA
Donald S. Mamayek - Mountain View CA

Assignee:

Scimed Life Systems, Inc. - Maple Grove MN

International Classification:

A61B 1722

US Classification:

606159, 606180

Abstract:

Rotating element catheters and catheter assemblies employ clutch assemblies for preventing rotational energy from being transmitted from a motor drive unit to the catheter element under defined circumstances. The catheter assembly includes an elongate member in which there is disposed a rotatable catheter drive cable. The catheter drive cable may have an operative element, e. g. , an ultrasonic transducer or an artherectomy blade, distally mounted thereon for providing diagnostic or therapeutic functions to the physician. To control the rotation of the catheter drive shaft, the clutch assembly is configured such that the catheter drive shaft is operated in a drive mode (i. e. , it is allowed to rotate) and in a release mode (i. e. , it is prevented from rotating). The clutch assembly includes a spring, one end of which is affixed to one of a driver member and a driven member, and the body of which is interference fitted with the other of the driver member and driven member to create a frictional relationship therebetween, which is not overcome when an applied torque does not exceed a critical magnitude, but is overcome when the applied torque exceeds the critical magnitude.

US Patent:

6499348, Dec 31, 2002

Filed:

Dec 3, 1999

Appl. No.:

09/454128

Inventors:

Donald S. Mamayek - Mountain View CA

Assignee:

SciMed Life Systems, Inc. - Maple Grove MN

International Classification:

G01N 2900

US Classification:

73632, 73628, 73634, 73862046, 367153, 367155

Abstract:

A dynamically configurable ultrasound transducer element and related circuits and methods. The transducer may comprise an array of capacitive transducer elements, a row decoder coupled to said array of capacitive transducer elements, a column decoder coupled to said array of capacitive transducer elements, a bias voltage source coupled to said row decoder, and a driving signal source coupled to said column decoder. Preferably, a master clock also is provided to allow for a synchronization of signals between the row decoder and column decoder.

US Patent:

6517528, Feb 11, 2003

Filed:

Apr 13, 2000

Appl. No.:

09/548692

Inventors:

Anthony Pantages - Los Altos CA
Donald S. Mamayek - Mountain View CA

Assignee:

Scimed Life Systems, Inc. - Maple Grove MN

International Classification:

A61M 2500

US Classification:

604523, 600466, 600459, 606159

Abstract:

Rotating element catheters and catheter assemblies employ clutch assemblies for preventing rotational energy from being transmitted from a motor drive unit to the catheter element under defined circumstances. The catheter assembly includes an elongate member in which there is disposed a rotatable catheter drive cable. The catheter drive cable may have an operative element, e. g. , an ultrasonic transducer or an artherctomy blade, distally mounted thereon for providing diagnostic or therapeutic functions to the physician. To control the rotation of the catheter drive shaft, the clutch assembly is configured such that the catheter drive shaft is operated in a drive mode (i. e. , it is allowed to rotate) and in a release mode (i. e. , it is prevented from rotating). The clutch assembly includes a driver member and a driven member, one of which is magnetic and the other of which is ferrous.

US Patent:

6529760, Mar 4, 2003

Filed:

Jun 6, 2001

Appl. No.:

09/876717

Inventors:

Anthony J. Pantages - Los Altos CA
William Martin Belef - San Jose CA
Lawrence D. Wasicek - San Jose CA
Donald S. Mamayek - Mountain View CA
James D. Koger - Santa Cruz CA
Steven Nelson Roe - San Mateo CA

Assignee:

Scimed Life Systems, Inc. - Maple Grove MN

International Classification:

A61B 500

US Classification:

600407, 600462, 600585

Abstract:

An intravascular imaging guidewire which can accomplish longitudinal translation of an imaging plane allowing imaging, by acoustic other high quality imaging energy, of an axial length of a region of interest without moving the guidewire. The imaging guidewire comprises a body in the form of a flexible elongate tubular member. An elongate flexible imaging core is slidably received within the body. The imaging core includes a shaft having an imaging device mounted on its distal end. The body and the imaging core are cooperatively constructed to enable axial translation of the imaging core and imaging device relative to the body. The body has a transparent distal portion extending an axial length over which axially translatable imaging may be performed. The imaging guidewire has a maximum diameter over its entire length sized to be received within a guidewire lumen of an intravascular catheter.