Patents by Inventor Roger Hastings
Roger Hastings has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20050119556Abstract: A method of magnetically manipulating a medical device within a body part of a human patient in conjunction with MR imaging includes applying a navigating magnetic field with magnets from the MR imaging device, and changing the magnetic moment of the medical device to change the orientation of the medical device within the body partType: ApplicationFiled: November 10, 2004Publication date: June 2, 2005Inventors: George Gillies, Roger Hastings, Jeffrey Garibaldi, William Broaddus
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Publication number: 20050054912Abstract: A method of navigating a medical device having a changeable magnetic moment within an operating region within a patient, the method includes applying a navigating magnetic field to the operating region with an external source magnet, and changing the direction of the magnetic moment in the medical device to change the orientation of the medical device in a selected direction within the operating region. The magnet moment of the medical device can be created by one or more electromagnet coils, in which case the magnetic moment can be changed by changing the current to the coil. Alternatively, the magnetic moment of the medical device can be created by one or more permanent magnets, in which case the magnetic moment can be changed by mechanically or magnetically manipulating the permanent magnet.Type: ApplicationFiled: September 7, 2004Publication date: March 10, 2005Inventors: Jeffrey Garibaldi, Roger Hastings
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Publication number: 20050043611Abstract: A method of navigating a medical device in an operating region in a subject. The method includes applying a magnetic field to the operating region and changing the magnetic moment of the medical device by selectively changing a physical condition of at least one magnet element in the medical device to change the orientation of the device with respect to the applied magnetic field.Type: ApplicationFiled: April 29, 2004Publication date: February 24, 2005Inventors: Michael Sabo, Rogers Ritter, Roger Hastings, Raju Viswanathan
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Publication number: 20050027285Abstract: A method of turning a medical device, having a magnetically responsive element associated with its distal end, at an operating point within an operating region inside a patients body from an initial direction to a desired final direction, through the movement of at least one external source magnet. The at least one external source magnet is moved in such a way as to change the direction of the distal end of the magnetic medical device from the initial direction to the desired final direction without substantial deviation from the plane containing the initial direction and the desired final direction.Type: ApplicationFiled: June 28, 2004Publication date: February 3, 2005Inventors: Rogers Ritter, Bevil Hogg, Peter Werp, Walter Blume, Francis Creighton, Roger Hastings
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Patent number: 6375609Abstract: An in vivo source of mechanical energy is provided in close proximity to its load. In the disclosed embodiments, the mechanical energy source is a miniaturized motor (“micromotor”) and the load is a miniaturized perfusion pump located at the distal end of a transluminal catheter. The motor is powerful enough to provide the electrical energy needed by the perfusion pump to fluid, and yet small enough to fit inside a body vessel. A position sensor may be provided for automatically controlling the motor's driving current so that it is corresponds to the applied load. An embodiment of the perfusion pump is also provided in which an external energy source is used. Another embodiment is provided wherein a balloon/pump/miniaturized-motor configuration is provided on a distal end of a catheter.Type: GrantFiled: May 3, 2000Date of Patent: April 23, 2002Assignee: Scimed Life Systems, Inc.Inventors: Roger Hastings, Kenneth Larson, Michael Berman, Daniel M. Lafontaine
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Patent number: 6089235Abstract: An in vivo source of mechanical energy is provided in close proximity to its load. In the disclosed embodiments, the mechanical energy source is a miniaturized motor ("micromotor") and the load is a miniaturized perfusion pump located at the distal end of a transluminal catheter. The motor is powerful enough to provide the electrical energy needed by the perfusion pump to fluid, and yet small enough to fit inside a body vessel. A position sensor may be provided for automatically controlling the motor's driving current so that it is corresponds to the applied load. An embodiment of the perfusion pump is also provided in which an external energy source is used. Another embodiment is provided wherein a balloon/pump/miniaturized-motor configuration is provided on a distal end of a catheter.Type: GrantFiled: February 26, 1999Date of Patent: July 18, 2000Assignee: Scimed Life Systems, Inc.Inventors: Roger Hastings, Kenneth Larson, Michael Berman, Daniel M Lafontaine
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Patent number: 5941871Abstract: A catheter system having a changeable distal member. The catheter system includes a proximal member, including a shaft having a proximal end, a distal end and a lumen extending therethrough. A distal member is included having a distal portion which may be passed through the lumen of the proximal member and releasably sealed to the proximal member at a desired location during a catheter procedure. The distal member may further include a push member operably coupled to the distal portion. The distal member may include a fluid-tight releasable seal for releasably sealing the distal member to the proximal member.Type: GrantFiled: March 20, 1998Date of Patent: August 24, 1999Assignee: SciMed Life Systems, Inc.Inventors: Daniel O. Adams, Roger Hastings, Louis Ellis
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Patent number: 5823199Abstract: An in vivo source of mechanical energy is provided in close proximity to its load. In the disclosed embodiments, the mechanical energy source is a miniaturized motor ("micromotor") and the load is a miniaturized perfusion pump located at the distal end of a transluminal catheter. The motor is powerful enough to provide the electrical energy needed by the perfusion pump to fluid, and yet small enough to fit inside a body vessel. A position sensor may be provided for automatically controlling the motor's driving current so that it is corresponds to the applied load. An embodiment of the perfusion pump is also provided in which an external energy source is used. Another embodiment is provided wherein a balloon/pump/miniaturized-motor configuration is provided on a distal end of a catheter.Type: GrantFiled: February 5, 1997Date of Patent: October 20, 1998Assignee: SciMed Life Systems, Inc.Inventors: Roger Hastings, Kenneth Larson, Michael Berman, Daniel M. Lafontaine
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Patent number: 5795318Abstract: A temporary stent comprises a coil of tubular thermoplastic material and a heating element inside the tubular material, or a film with a metal film resistive heating element coated thereon. A method of temporarily supporting the wall of a vessel comprises the steps of inserting a thermoplastic body having a first outer dimension less than the inside dimension of the vessel into the vessel to the desired support position; heating the thermoplastic above its softening transition temperature and expanding it to a second outer dimension larger than its first outer dimension; cooling the thermoplastic body to below its softening transition temperature while at its second outer dimension; allowing the cooled thermoplastic body to temporarily support the vessel; heating the thermoplastic above its softening transition temperature to soften the thermoplastic; and removing the softened thermoplastic body from the vessel.Type: GrantFiled: February 20, 1997Date of Patent: August 18, 1998Assignee: Scimed Life Systems, Inc.Inventors: Lixiao Wang, Roger Hastings, Paul Buscemi, Sew-Wah Tay
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Patent number: 5776080Abstract: The present invention is a device and method for controlling longitudinal movement of a tube relative to a shaft slidably disposed within the tube, especially in the catheterization of a patient. An operative segment on the shaft cooperates with an ancillary tool to create a coupling force field between the shaft and the tool. The tube can then be moved over the shaft while the coupling force field operates through the tube to restrict the movement of the shaft. In the preferred embodiment, the shaft is a guide wire and the tube is a catheter with a lumen for slidably receiving the guide wire, while the coupling force field is created magnetically. In one embodiment, the operative segment is borne on a short guide wire extension which is selectively securable to a standard guide wire.Type: GrantFiled: May 2, 1997Date of Patent: July 7, 1998Assignee: SciMed Life Systems, Inc.Inventors: Scott Thome, Kevin Klitz, Janet L. Jacobsen, Kevin Kang, Roger Hastings
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Patent number: 5730734Abstract: A catheter system having a changeable distal member. The catheter system includes a proximal member, including a shaft having a proximal end, a distal end and a lumen extending therethrough. A distal member is included having a distal portion which may be passed through the lumen of the proximal member and releasably sealed to the proximal member at a desired location during a catheter procedure. The distal member may further include a push member operably coupled to the distal portion. The distal member may include a fluid-tight releasable seal for releasably sealing the distal member to the proximal member.Type: GrantFiled: November 14, 1996Date of Patent: March 24, 1998Assignee: SciMed Life Systems, Inc.Inventors: Daniel O. Adams, Roger Hastings, Louis Ellis
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Patent number: 5716410Abstract: A temporary stent comprises a coil of tubular thermoplastic material and a heating element inside the tubular material, or a film with a metal film resistive heating element coated thereon. A method of temporarily supporting the wall of a vessel comprises the steps of inserting a thermoplastic body having a first outer dimension less than the inside dimension of the vessel into the vessel to the desired support position; heating the thermoplastic above its softening transition temperature and expanding it to a second outer dimension larger than its first outer dimension; cooling the thermoplastic body to below its softening transition temperature while at its second outer dimension; allowing the cooled thermoplastic body to temporarily support the vessel; heating the thermoplastic above its softening transition temperature to soften the thermoplastic; and removing the softened thermoplastic body from the vessel.Type: GrantFiled: December 22, 1995Date of Patent: February 10, 1998Assignee: Scimed Life Systems, Inc.Inventors: Lixiao Wang, Roger Hastings, Paul Buscemi, Sew-Wah Tay
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Patent number: 5628719Abstract: An in vivo source of mechanical energy is provided in close proximity to its load. In the disclosed embodiments, the mechanical energy source is a miniaturized motor ("micromotor") and the load is a miniaturized perfusion pump located at the distal end of a transluminal catheter. The motor is powerful enough to provide the electrical energy needed by the perfusion pump to fluid, and yet small enough to fit inside a body vessel. A position sensor may be provided for automatically controlling the motor's driving current so that it is corresponds to the applied load. An embodiment of the perfusion pump is also provided in which an external energy source is used. Another embodiment is provided wherein a balloon/pump/miniaturized-motor configuration is provided on a distal end of a catheter.Type: GrantFiled: November 21, 1994Date of Patent: May 13, 1997Assignee: Scimed Life Systems, Inc.Inventors: Roger Hastings, Kenneth Larson, Michael Berman, Daniel M. Lafontaine
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Patent number: 5617870Abstract: A sensor coil is located on guidewire or perfusion catheter and introduced into the body. First the sensor coil is isolated from blood flow and used to make a set of static measurements. Next the sensor coil is heated in the presence of blood flow and a set of dynamic measurements are made which reflect the blood flow past the sensor coil.Type: GrantFiled: September 12, 1994Date of Patent: April 8, 1997Assignee: Scimed Life Systems, Inc.Inventors: Roger Hastings, Paul Feld
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Patent number: 5588442Abstract: Guide catheter exchange device and method of exchanging a guide catheter. The guide catheter exchange device includes a magnetically responsive segment located on a proximal end for maintaining a previously placed guide wire in position across a stenosis, while performing a guide catheter exchange procedure. The guide catheter exchange device allows a guide catheter exchange procedure to be performed by a solo physician.Type: GrantFiled: March 2, 1995Date of Patent: December 31, 1996Assignee: SciMed Life Systems, Inc.Inventors: Brian Scovil, Todd A. Berg, Kevin Klitz, Thomas J. Bachinski, John W. Humphrey, Scott Thome, Roger Hastings
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Patent number: 5501228Abstract: A percutaneous transluminal device for sensing the mechanical vibrations imparted to it inside a patient's vascular system. The preferred embodiments include a transducer attached to the distal end of a flexible guide wire. The transducer senses mechanical vibrations imparted to the guide wire in vivo and generates a corresponding electronic signal. Devices are provided for generating an audio or visual representation of the electronic signal.Type: GrantFiled: July 21, 1994Date of Patent: March 26, 1996Assignee: SCIMED Life Systems, Inc.Inventors: Daniel M. Lafontaine, Roger Hastings, Daniel O. Adams
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Patent number: 5450853Abstract: A pressure sensor having a tubular member partially filled with a ferrofluid column and partially filled with air, with an electrically conductive coil wrapped around the tubular member. When in use, the coil has alternating current running therethrough and the voltage across the coil is monitored. Physiologic pressure variations result in proportional variations in the position of the ferrofluid/air interface relative to the coil. This results in proportional changes in the coil voltage due to the change in coil inductance. The pressure sensor is compact and can be incorporated into many devices including a guide wire.Type: GrantFiled: October 22, 1993Date of Patent: September 19, 1995Assignee: Scimed Life Systems, Inc.Inventors: Roger Hastings, Ken Larson
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Patent number: 5441516Abstract: Apparatus including a spiral coil body as a stent for temporarily supporting a body vessel internally, the spiral coil body being adjustable in diameter by relative rotation of at least one of the ends of the body from a proximal location.Type: GrantFiled: March 3, 1994Date of Patent: August 15, 1995Assignee: Scimed Lifesystems Inc.Inventors: Lixiao Wang, Martin R. Willard, Thomas T. Tran, Roger Hastings, Dale F. Schmaltz, Thomas J. Holman
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Patent number: 5346508Abstract: An apparatus and method for performing diagnostics and intravascular therapies. A guidewire anemometer can be used to measure the velocity of fluid flowing through the vasculature. An in-line anemometer can be used to measure the volumetric flow rate of fluid transported out of a patient's body. A heated balloon catheter can be used to deliver heat therapy no a vessel wall in a patient's vasculature.Type: GrantFiled: April 29, 1993Date of Patent: September 13, 1994Assignee: SCIMED Life Systems, Inc.Inventor: Roger Hastings