Patents by Inventor Lynn M. Shimada
Lynn M. Shimada 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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Patent number: 7097657Abstract: A fluid circuit for circulating coolant in a closed loop between an intravascular catheter and a heat exchange system includes a buffer IV bag in fluid flow series with the catheter between the catheter and a pump that pumps the coolant to the heat exchange system. A conventional IV bag is connected by means of a spike and tube to the buffer bag.Type: GrantFiled: February 18, 2003Date of Patent: August 29, 2006Assignee: Alsius CorporationInventors: Wayne Arthur Noda, Lynn M. Shimada
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Patent number: 6872215Abstract: Disclosed is a focal balloon having at least one reference zone and a focal zone. In one embodiment, the reference zone and focal zone are inflatable to a first generally cylindrical profile at a first pressure. At a second, greater pressure, the focal section expands to a second, greater diameter, while the reference zone remains substantially at the first diameter. In an alternate embodiment, the focal zone and the reference zone are inflatable to their respective predetermined diameters at the inflation pressure, in the absence of constricting lesions or anatomical structures. Multiple lobed and drug delivery embodiments are also disclosed.Type: GrantFiled: June 24, 2002Date of Patent: March 29, 2005Assignee: Adiance Medical Systems, Inc.Inventors: Michael Crocker, Lynn M. Shimada
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Publication number: 20040162520Abstract: A fluid circuit for circulating coolant in a closed loop between an intravascular catheter and a heat exchange system includes a buffer IV bag in fluid flow series with the catheter between the catheter and a pump that pumps the coolant to the heat exchange system. A conventional IV bag is connected by means of a spike and tube to the buffer bag.Type: ApplicationFiled: February 18, 2003Publication date: August 19, 2004Inventors: Wayne Arthur Noda, Lynn M. Shimada
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Patent number: 6652565Abstract: An introducer sheath for a central venous catheter includes a sheath body and a temperature sensor mounted distally on the body. Either the catheter or sheath has a heat exchange region through which coolant is circulated to effect heat exchange with the body, with the coolant temperature being controlled in response to signals from the temperature sensor. Arterial dialysis heat exchange catheters and jugular bulb heat exchange catheters are also disclosed.Type: GrantFiled: August 24, 2001Date of Patent: November 25, 2003Assignee: Alsius CorporationInventors: Lynn M. Shimada, William J. Worthen, Scott M. Evans, Xia Luo, Robert Pecor, Blair D. Walker
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Publication number: 20030208156Abstract: A system for controlling patient temperature uses a central venous line catheter having axially spaced distal and proximal heat exchange balloons. The central venous line catheter is provided with one or more lumens for providing access to the central blood supply of the patient, and with additional lumens for communicating heat exchange fluid to the balloons. Heat exchange fluid temperature is controlled through a feed back loop in which patient temperature is sensed and used to control a temperature control unit comprising a heating device and/or a cooling device in heat exchange relationship with the heat exchange fluid. A tubing set transports the heat exchange fluid between the central venous line and the temperature control unit, with a pump serving to circulate the fluid in a closed fluid circuit in the system.Type: ApplicationFiled: August 13, 2001Publication date: November 6, 2003Inventors: Nora Tran Pham, Lynn M. Shimada, Scott M. Evans, Blair D. Walker
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Publication number: 20030195466Abstract: A system for controlling patient temperature uses a central venous line catheter having axially spaced distal and proximal heat exchange balloons. The central venous line catheter is provided with one or more lumens for providing access to the central blood supply of the patient, and with additional lumens for communicating heat exchange fluid to the balloons. Heat exchange fluid temperature is controlled through a feed back loop in which patient temperature is sensed and used to control a temperature control unit comprising a heating device and/or a cooling device in heat exchange relationship with the heat exchange fluid. A tubing set transports the heat exchange fluid between the central venous line and the temperature control unit, with a pump serving to circulate the fluid in a closed fluid circuit in the system.Type: ApplicationFiled: May 8, 2003Publication date: October 16, 2003Applicant: Alsius CorporationInventors: Nora Tran Pham, Lynn M. Shimada, Scott M. Evans, Blair D. Walker
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Patent number: 6620131Abstract: A system for controlling patient temperature uses a central venous line catheter having axially spaced distal and proximal heat exchange balloons. The central venous line catheter is provided with one or more lumens for providing access to the central blood supply of the patient, and with additional lumens for communicating heat exchange fluid to the balloons. Heat exchange fluid temperature is controlled through a feed back loop in which patient temperature is sensed and used to control a temperature control unit comprising a heating device and/or a cooling device in heat exchange relationship with the heat exchange fluid. A tubing set transports the heat exchange fluid between the central venous line and the temperature control unit, with a pump serving to circulate the fluid in a closed fluid circuit in the system.Type: GrantFiled: August 10, 2001Date of Patent: September 16, 2003Assignee: Alsius CorporationInventors: Nora Tran Pham, Lynn M. Shimada, Scott M. Evans, Blair D. Walker
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Patent number: 6529775Abstract: An indwelling RF catheter achieves warming of patients by dielectric heating of blood or other bodily fluids. In one example, the catheter is deployed in a suitable blood vessel, such as the inferior vena cava. The catheter design includes an emitter structure electrically coupled to an RF generator, which provides a source of RF power. The emitter structure, distally located upon the catheter, administers electromagnetic radiation to the blood within the patient, thereby creating heat due to the dielectric qualities of blood. As blood heated by the indwelling RF catheter courses through the patient's body, the patient's body is systemically warmed, raising the body core temperature.Type: GrantFiled: January 16, 2001Date of Patent: March 4, 2003Assignee: Alsius CorporationInventors: Mark Evan Whitebook, Blair D. Walker, Scott M. Evans, Lynn M. Shimada
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Publication number: 20030028211Abstract: Disclosed is a focal balloon having at least one reference zone and a focal zone. In one embodiment, the reference zone and focal zone are inflatable to a first generally cylindrical profile at a first pressure. At a second, greater pressure, the focal section expands to a second, greater diameter, while the reference zone remains substantially at the first diameter. In an alternate embodiment, the focal zone and the reference zone are inflatable to their respective predetermined diameters at the inflation pressure, in the absence of constricting lesions or anatomical structures. Multiple lobed and drug delivery embodiments are also disclosed.Type: ApplicationFiled: June 24, 2002Publication date: February 6, 2003Inventors: Michael Crocker, Lynn M. Shimada
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Patent number: 6450990Abstract: A catheter using multiple hollow fibers to carry a heating/cooling fluid employs fiber spreading features to improve heat transfer and help prevent clotting of body fluids within which the catheter is immersed. The catheter includes a length of outer tube surrounding an inner tube. The inner tube conveys fluids in one direction, and the passageway between inner and outer tubes conveys fluids in the opposite direction. The inner and outer tubes have proximal distal ends. The distal end is closed, but the proximal end is open to permit introduction of a heating or cooling fluid into the inner tube, and withdrawal of the fluid from the passageway between the inner and outer tubes. At the tubes' distal end resides a proximal fluid transfer housing coupled to multiple hollow heat exchange fibers. The distal ends of these fibers may be commonly connected to a distal fluid transfer housing and optional reservoir, which cooperatively return fluid to the passageway between inner and outer tubes.Type: GrantFiled: April 19, 1999Date of Patent: September 17, 2002Assignee: Alsius CorporationInventors: Blair D. Walker, Scott M. Evans, David P. Balding, Gregg Hallam, Lynn M. Shimada
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Publication number: 20020095198Abstract: An indwelling RF catheter achieves warming of patients by dielectric heating of blood or other bodily fluids. In one example, the catheter is deployed in a suitable blood vessel, such as the inferior vena cava. The catheter design includes an emitter structure electrically coupled to an RF generator, which provides a source of RF power. The emitter structure, distally located upon the catheter, administers electromagnetic radiation to the blood within the patient, thereby creating heat due to the dielectric qualities of blood. As blood heated by the indwelling RF catheter courses through the patient's body, the patient's body is systemically warmed, raising the body core temperature.Type: ApplicationFiled: January 16, 2001Publication date: July 18, 2002Inventors: Mark Evan Whitebook, Blair D. Walker, Scott M. Evans, Lynn M. Shimada
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Patent number: 6419643Abstract: An introducer sheath for a central venous catheter includes a sheath body and a temperature sensor mounted distally on the body. Either the catheter or sheath has a heat exchange region through which coolant is circulated to effect heat exchange with the body, with the coolant temperature being controlled in response to signals from the temperature sensor. Arterial dialysis heat exchange catheters and jugular bulb heat exchange catheters are also disclosed.Type: GrantFiled: August 18, 1999Date of Patent: July 16, 2002Assignee: Alsius CorporationInventors: Lynn M. Shimada, William J. Worthen, Scott M. Evans, Xia Luo, Robert Pecor, Blair D. Walker
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Patent number: 6409741Abstract: Disclosed is a focal balloon having at least one reference zone and a focal zone. In one embodiment, the reference zone and focal zone are inflatable to a first generally cylindrical profile at a first pressure. At a second, greater pressure, the focal section expands to a second, greater diameter, while the reference zone remains substantially at the first diameter. In an alternate embodiment, the focal zone and the reference zone are inflatable to their respective predetermined diameters at the inflation pressure, in the absence of constricting lesions or anatomical structures. Multiple lobed and drug delivery, embodiments are also disclosed.Type: GrantFiled: May 3, 2000Date of Patent: June 25, 2002Assignee: Adiance Medical Systems, Inc.Inventors: Michael Crocker, Lynn M. Shimada
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Publication number: 20020029016Abstract: A system for controlling patient temperature uses a central venous line catheter having axially spaced distal and proximal heat exchange balloons. The central venous line catheter is provided with one or more lumens for providing access to the central blood supply of the patient, and with additional lumens for communicating heat exchange fluid to the balloons. Heat exchange fluid temperature is controlled through a feed back loop in which patient temperature is sensed and used to control a temperature control unit comprising a heating device and/or a cooling device in heat exchange relationship with the heat exchange fluid. A tubing set transports the heat exchange fluid between the central venous line and the temperature control unit, with a pump serving to circulate the fluid in a closed fluid circuit in the system.Type: ApplicationFiled: August 10, 2001Publication date: March 7, 2002Applicant: Entire InterestInventors: Nora Tran Pham, Lynn M. Shimada, Scott M. Evans, Blair D. Walker
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Publication number: 20010031946Abstract: A catheter using multiple hollow fibers to carry a heating/cooling fluid employs fiber spreading features to improve heat transfer and help prevent clotting of body fluids within which the catheter is immersed. The catheter includes a length of outer tube surrounding an inner tube. The inner tube conveys fluids in one direction, and the passageway between inner and outer tubes conveys fluids in the opposite direction. The inner and outer tubes have proximal distal ends. The distal end is closed, but the proximal end is open to permit introduction of a heating or cooling fluid into the inner tube, and withdrawal of the fluid from the passageway between the inner and outer tubes. At the tubes' distal end resides a proximal fluid transfer housing coupled to multiple hollow heat exchange fibers. The distal ends of these fibers may be commonly connected to a distal fluid transfer housing and optional reservoir, which cooperatively return fluid to the passageway between inner and outer tubes.Type: ApplicationFiled: June 11, 2001Publication date: October 18, 2001Inventors: Blair D. Walker, Scott M. Evans, David P. Balding, Gregg Hallam, Lynn M. Shimada
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Patent number: 6299599Abstract: A system for controlling patient temperature uses a central venous line catheter having axially spaced distal and proximal heat exchange balloons. The central venous line catheter is provided with one or more lumens for providing access to the central blood supply of the patient, and with additional lumens for communicating heat exchange fluid to the balloons. Heat exchange fluid temperature is controlled through a feed back loop in which patient temperature is sensed and used to control a temperature control unit comprising a heating device and/or a cooling device in heat exchange relationship with the heat exchange fluid. A tubing set transports the heat exchange fluid between the central venous line and the temperature control unit, with a pump serving to circulate the fluid in a closed fluid circuit in the system.Type: GrantFiled: October 27, 1999Date of Patent: October 9, 2001Assignee: Alsius CorporationInventors: Nora Tran Pham, Lynn M. Shimada, Scott M. Evans, Blair D. Walker
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Patent number: 6120523Abstract: Disclosed is a focal balloon having at least one reference zone and a focal zone. In one embodiment, the reference zone and focal zone are inflatable to a first generally cylindrical profile at a first pressure. At a second, greater pressure, the focal section expands to a second, greater diameter, while the reference zone remains substantially at the first diameter. In an alternate embodiment, the focal zone and the reference zone are inflatable to their respective predetermined diameters at the inflation pressure, in the absence of constricting lesions or anatomical structures. Multiple lobed and drug delivery embodiments are also disclosed.Type: GrantFiled: November 30, 1998Date of Patent: September 19, 2000Assignee: Radiance Medical Systems, Inc.Inventors: Michael Crocker, Lynn M. Shimada
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Patent number: 6027517Abstract: Disclosed is a focal balloon having at least one reference zone and a focal zone. In one embodiment, the reference zone and focal zone are inflatable to a first generally cylindrical profile at a first pressure. At a second, greater pressure, the focal section expands to a second, greater diameter, while the reference zone remains substantially at the first diameter. In an alternate embodiment, the focal zone and the reference zone are inflatable to their respective predetermined diameters at the inflation pressure, in the absence of constricting lesions or anatomical structures. Both balloons may be utilized to conduct interactive angioplasty to provide real-time feedback about the morphology of the lesion, and both balloons may be utilized to implant or size intravascular stents.Type: GrantFiled: May 13, 1997Date of Patent: February 22, 2000Assignee: Radiance Medical Systems, Inc.Inventors: Michael Crocker, Lynn M. Shimada, Robert J. Elicker
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Patent number: 5843116Abstract: Disclosed is a focal balloon having at least one reference zone and a focal zone. In one embodiment, the reference zone and focal zone are inflatable to a first generally cylindrical profile at a first pressure. At a second, greater pressure, the focal section expands to a second, greater diameter, while the reference zone remains substantially at the first diameter. In an alternate embodiment, the focal zone and the reference zone are inflatable to their respective predetermined diameters at the inflation pressure, in the absence of constricting lesions or anatomical structures. Multiple lobed and drug delivery embodiments are also disclosed.Type: GrantFiled: October 30, 1996Date of Patent: December 1, 1998Assignee: Cardiovascular Dynamics, Inc.Inventors: Michael Crocker, Lynn M. Shimada
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Patent number: 5645560Abstract: Disclosed is a focal balloon having at least one reference zone and a focal zone. In one embodiment, the reference zone and focal zone are inflatable to a first generally cylindrical profile at a first pressure. At a second, greater pressure, the focal section expands to a second, greater diameter, while the reference zone remains substantially at the first diameter. In an alternate embodiment, the focal zone and the reference zone are inflatable to their respective predetermined diameters at the inflation pressure, in the absence of constricting lesions or anatomical structures. Both balloons may be utilized to conduct interactive angioplasty to provide real-time feedback about the morphology of the lesion, and both balloons may be utilized to implant or size intravascular stents.Type: GrantFiled: May 2, 1996Date of Patent: July 8, 1997Assignee: Cardiovascular Dynamics, Inc.Inventors: Michael Crocker, Lynn M. Shimada, Robert J. Elicker