Patents by Inventor Jonathan M. Howland
Jonathan M. Howland 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).
-
Patent number: 8257278Abstract: A guide wire for guiding a medical device within a patient is disclosed. The guide wire has a solid inner core made of high modulus material such as Conichrome® or a rhenium alloy, and an outer shell made of a flexible, kink resistant material such as a nickel-titanium alloy. Preferably, the modulus of elasticity of the inner core material is at least about 20 percent greater than that of the outer shell material. The outer shell is mechanically joined to the inner core through a drawing or cladding process. In various embodiments, the distal end of the guide wire can be tapered by grinding away the outer shell to expose the inner core. Because of its stiffness, it can be manually shaped by the physician or cardiologist.Type: GrantFiled: May 14, 2002Date of Patent: September 4, 2012Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Jonathan M. Howland, Wayne E. Cornish, Mark T. Richardson
-
Patent number: 8123702Abstract: The present invention is directed to an intracorporeal device, preferably a guidewire, and method for making the device. The guidewire of the present invention is formed, at least in part, of a composite elongate core formed, at least in part, of precipitation hardened material. The elongate core members of the present invention will have an ultimate tensile strength and modulus of elasticity greater than the same for an identically dimensioned elongate member formed from superelastic NITINOL alone.Type: GrantFiled: March 11, 2008Date of Patent: February 28, 2012Assignee: Abbott Cardiovascular Systems Inc.Inventors: Ryan Grandfield, Mark T. Richardson, Peter D'Aquanni, Wayne E. Cornish, Jonathan M. Howland
-
Patent number: 7717864Abstract: The present invention is directed to an intracorporeal device, preferably a guidewire, and method for making the device. The guidewire of the present invention is formed, at least in part, of a composite elongate core formed, at least in part, of precipitation hardened material. The elongate core members of the present invention will have an ultimate tensile strength and modulus of elasticity greater than the same for an identically dimensioned elongate member formed from superelastic NITINOL alone.Type: GrantFiled: April 21, 2003Date of Patent: May 18, 2010Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Ryan Grandfield, Mark T. Richardson, Peter D'Aquanni, Wayne E. Cornish, Jonathan M. Howland
-
Patent number: 7713259Abstract: An intracorporeal catheter, such as a guiding catheter, employed for intraluminal procedures is disclosed. The catheter generally has an elongated catheter shaft including a polymeric inner layer and a non-radiopaque outer polymeric layer, along with a radiopaque reinforcing structure disposed between the inner and outer layers. In one embodiment, the reinforcing layer consists of multiple drawn filled tubes braided or wound together. The drawn filled tubes may have a stainless steel outer jacket clad over a radiopaque inner core, or the drawn filled tubes may have a radiopaque outer jacket clad over a stainless steel core. In another embodiment, the reinforcing layer may consist of multiple wires containing radiopaque alloys braided or wound together, wherein at least two of the wires consist of different radiopaque alloys. The strands of the reinforcing structure may have a circular or a rectangular transverse cross-sectional shape.Type: GrantFiled: March 17, 2008Date of Patent: May 11, 2010Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Brandon Gosiengfiao, Jonathan M. Howland
-
Publication number: 20090131913Abstract: The present invention is directed to an intracorporeal device, preferably a guidewire, and method for making the device. The guidewire of the present invention is formed, at least in part, of a composite elongate core formed, at least in part, of precipitation hardened material. The elongate core members of the present invention will have an ultimate tensile strength and modulus of elasticity greater than the same for an identically dimensioned elongate member formed from superelastic NITINOL alone.Type: ApplicationFiled: March 11, 2008Publication date: May 21, 2009Applicant: ADVANCED CARDIOVASCULAR SYSTEMS, INC.Inventors: Ryan Grandfield, Mark T. Richardson, Peter D'Aquanni, Wayne E. Cornish, Jonathan M. Howland
-
Publication number: 20080161776Abstract: An intracorporeal catheter, such as a guiding catheter, employed for intraluminal procedures is disclosed. The catheter generally has an elongated catheter shaft including a polymeric inner layer and a non-radiopaque outer polymeric layer, along with a radiopaque reinforcing structure disposed between the inner and outer layers. In one embodiment, the reinforcing layer consists of multiple drawn filled tubes braided or wound together. The drawn filled tubes may have a stainless steel outer jacket clad over a radiopaque inner core, or the drawn filled tubes may have a radiopaque outer jacket clad over a stainless steel core. In another embodiment, the reinforcing layer may consist of multiple wires containing radiopaque alloys braided or wound together, wherein at least two of the wires consist of different radiopaque alloys. The strands of the reinforcing structure may have a circular or a rectangular transverse cross-sectional shape.Type: ApplicationFiled: March 17, 2008Publication date: July 3, 2008Applicant: ADVANCED CARDIOVASCULAR SYSTEMS, INC.Inventors: Brandon Gosiengfiao, Jonathan M. Howland
-
Patent number: 7354428Abstract: An intracorporeal catheter, such as a guiding catheter, employed for intraluminal procedures is disclosed. The catheter generally has an elongated catheter shaft including a polymeric inner layer and a non-radiopaque outer polymeric layer, along with a radiopaque reinforcing structure disposed between the inner and outer layers. In one embodiment, the reinforcing layer consists of multiple drawn filled tubes braided or wound together. The drawn filled tubes may have a stainless steel outer jacket clad over a radiopaque inner core, or the drawn filled tubes may have a radiopaque outer jacket clad over a stainless steel core. In another embodiment, the reinforcing layer may consist of multiple wires containing radiopaque alloys braided or wound together, wherein at least two of the wires consist of different radiopaque alloys. The strands of the reinforcing structure may have a circular or a rectangular transverse cross-sectional shape.Type: GrantFiled: March 11, 2003Date of Patent: April 8, 2008Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Brandon Gosiengfiao, Jonathan M. Howland
-
Publication number: 20030216668Abstract: A guide wire for guiding a medical device within a patient is disclosed. The guide wire has a solid inner core made of high modulus material such as Conichrome® or a rhenium alloy, and an outer shell made of a flexible, kink resistant material such as a nickel-titanium alloy. Preferably, the modulus of elasticity of the inner core material is at least about 20 percent greater than that of the outer shell material. The outer shell is mechanically joined to the inner core through a drawing or cladding process. In various embodiments, the distal end of the guide wire can be tapered by grinding away the outer shell to expose the inner core. Because of its stiffness, it can be manually shaped by the physician or cardiologist.Type: ApplicationFiled: May 14, 2002Publication date: November 20, 2003Inventors: Jonathan M. Howland, Wayne E. Cornish, Mark T. Richardson
-
Patent number: 6234981Abstract: A method of joining two members of a medical device wherein at least one of the members has a thin layer of joinable material deposited on the surface thereof by vapor deposition, preferably, physical vapor deposition. A guidewire for advancement of intraluminal medical devices may be manufactured by depositing a thin layer of joinable material on the surface of a component which is made from a reactive alloy with a tenacious oxide layer. The thin layer of joinable material facilitates joining difficult to bond materials with other components of the guidewire. Physical vapor deposition may also be used to treat components of medical devices, such as distal guidewire segments, in order to alter their mechanical properties. Specifically, a pseudoelastic alloy segment may be made shapeable by vapor deposition of a non-pseudoelastic metal thereon.Type: GrantFiled: December 30, 1998Date of Patent: May 22, 2001Assignee: Advanced Cardiovascular Systems, Inc.Inventor: Jonathan M. Howland