Patents by Inventor Robert C. Hayzelden
Robert C. Hayzelden 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: 11911051Abstract: A guidewire for use in intravascular procedures has a solder or weld joint at a distal end thereof. A plurality of dimples are formed on the solder/weld joint to increase the engagement and penetration of fibrous material including chronic total occlusions (CTO).Type: GrantFiled: October 31, 2019Date of Patent: February 27, 2024Assignee: ABBOTT CARDIOVASCULAR SYSTEMS INC.Inventors: Robert C. Hayzelden, Puneet Kamal Singh Gill
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Publication number: 20220226618Abstract: A mold is used to form a solder joint to join the distal end of the guidewire to a wire coil. The mold has a cavity that can have different configurations so that the solder joint can be any of bullet shaped, micro-J shaped, cone shaped, truncated cone shaped, or have a textured surface.Type: ApplicationFiled: March 3, 2022Publication date: July 21, 2022Applicant: Abbott Cardiovascular Systems Inc.Inventor: Robert C. Hayzelden
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Patent number: 11285299Abstract: A mold is used to form a solder joint to join the distal end of the guidewire to a wire coil. The mold has a cavity that can have different configurations so that the solder joint can be any of bullet shaped, micro-J shaped, cone shaped, truncated cone shaped, or have a textured surface.Type: GrantFiled: October 31, 2019Date of Patent: March 29, 2022Assignee: ABBOTT CARDIOVASCULAR SYSTEMS INC.Inventor: Robert C. Hayzelden
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Publication number: 20210128181Abstract: A guidewire for use in intravascular procedures has a solder or weld joint at a distal end thereof. A plurality of dimples are formed on the solder/weld joint to increase the engagement and penetration of fibrous material including chronic total occlusions (CTO).Type: ApplicationFiled: October 31, 2019Publication date: May 6, 2021Applicant: ABBOTT CARDIOVASCULAR SYSTEMS INC.Inventors: Robert C. Hayzelden, Puneet Kamal Singh Gill
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Publication number: 20210128884Abstract: A mold is used to form a solder joint to join the distal end of the guidewire to a wire coil. The mold has a cavity that can have different configurations so that the solder joint can be any of bullet shaped, micro-J shaped, cone shaped, truncated cone shaped, or have a textured surface.Type: ApplicationFiled: October 31, 2019Publication date: May 6, 2021Applicant: ABBOTT CARDIOVASCULAR SYSTEMS INC.Inventor: Robert C. Hayzelden
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Patent number: 7419477Abstract: Methods of using a catheter involve providing a sheath comprising a proximal region, a deflection region, a distal-end region including a shapeable region, an anchor region defined between the deflection region and the shapeable region, and a longitudinal axis. The method also involves imparting a pre-established shape to the shapeable region. The method further involves applying axial force in a proximal direction at the anchor region so as to cause the deflection region to deflect relative to the longitudinal axis while the pre-established shape imparted to the shapeable region of the sheath is substantially maintained.Type: GrantFiled: May 27, 2004Date of Patent: September 2, 2008Assignee: Cardiac Pacemakers, Inc.Inventors: John A. Simpson, Robert C. Hayzelden, Wade A. Bowe
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Patent number: 6869414Abstract: A catheter employs a pre-formed distal end and a proximal deflection mechanism for steering the catheter. A shaped member extends from a shaped region of the catheter sheath to at least a portion of an anchor region. A steering ribbon extends from a proximal region of the sheath and passes within at least a portion of the anchor region. A distal end of the steering ribbon is joined with a proximal portion of the shaped member. At least one steering tendon is disposed within the sheath and has a first end attached at the anchor region and a second end located at the proximal region of the sheath. Movement of the steering tendon in a proximal direction causes the deflection region to deflect relative to the longitudinal axis of the catheter while the shape of shaped region of the sheath is substantially maintained.Type: GrantFiled: March 22, 2002Date of Patent: March 22, 2005Assignee: Cardiac Pacemakers, Inc.Inventors: John A. Simpson, Robert C. Hayzelden, Wade A. Bowe
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Publication number: 20040220520Abstract: Methods of using a catheter involve providing a sheath comprising a proximal region, a deflection region, a distal-end region including a shapeable region, an anchor region defined between the deflection region and the shapeable region, and a longitudinal axis. The method also involves imparting a pre-established shape to the shapeable region. The method further involves applying axial force in a proximal direction at the anchor region so as to cause the deflection region to deflect relative to the longitudinal axis while the pre-established shape imparted to the shapeable region of the sheath is substantially maintained.Type: ApplicationFiled: May 27, 2004Publication date: November 4, 2004Applicant: Cardiac Pacemakers, Inc.Inventors: John A. Simpson, Robert C. Hayzelden, Wade A. Bowe
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Patent number: 6730058Abstract: A catheter includes a steering system for manipulating the distal-end region of a sheath having a plurality of electrodes into direct contact with difficult-to-reach areas of the human body. The steering system includes a core base, a core distal tip, a stylet, a steering tendon, and a lever. Movement of the lever applies tension to the steering tendon causing the distal end of the sheath to deflect. A positioning mechanism, including a slidable controller, adjusts the position of the steering system relative to the catheter sheath to thereby provide multiple steering profiles.Type: GrantFiled: September 13, 2001Date of Patent: May 4, 2004Assignee: Cardiac Pacemakers, Inc.Inventor: Robert C. Hayzelden
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Patent number: 6648875Abstract: A catheter handle includes a steering controller to be used in conjunction with a steerable catheter shaft, and a steering tendon tensioning device. The operator deflects the profile of a distal-end region of the catheter by rotating the steering controller. Spring devices located on the steering tendons maintain the steering tendons in tension during manipulation of the steering controller. A locking device locks the steering controller in place relative to the handle.Type: GrantFiled: May 4, 2001Date of Patent: November 18, 2003Assignee: Cardiac Pacemakers, Inc.Inventors: John A. Simpson, Robert C. Hayzelden
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Publication number: 20030208198Abstract: A catheter includes a steering mechanism for manipulating the distal end of the catheter to obtain a plurality of deflection profiles, a torque transfer system to enhance torque transfer from the handle to the distal tip, and a support system to reduce undesirable deformation of the distal-end region during steering. The torque transfer system includes a flat ribbon within the relatively flexible distal-end region to enhance torque transfer through the distal-end region of the catheter. The support system includes a compression cage and longitudinal struts that are located within the distal-end region of the catheter. The support system can support axial loads and deflect laterally in the direction of the steering, thereby reducing the amount of stretching and compression of the catheter sheath within the deflecting region.Type: ApplicationFiled: May 28, 2003Publication date: November 6, 2003Inventors: Robert C. Hayzelden, John A. Simpson, Wade A. Bowe, Andrea M. Moore, Jesse Flores
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Publication number: 20030181855Abstract: A catheter employs a pre-formed distal end and a proximal deflection mechanism for steering the catheter. A shaped member extends from a shaped region of the catheter sheath to at least a portion of an anchor region. A steering ribbon extends from a proximal region of the sheath and passes within at least a portion of the anchor region. A distal end of the steering ribbon is joined with a proximal portion of the shaped member. At least one steering tendon is disposed within the sheath and has a first end attached at the anchor region and a second end located at the proximal region of the sheath. Movement of the steering tendon in a proximal direction causes the deflection region to deflect relative to the longitudinal axis of the catheter while the shape of shaped region of the sheath is substantially maintained.Type: ApplicationFiled: March 22, 2002Publication date: September 25, 2003Inventors: John A. Simpson, Robert C. Hayzelden, Wade A. Bowe
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Patent number: 6616628Abstract: A catheter includes a steering tendon and a longitudinally adjustable core having a curved shape in the distal portion thereof. The steering tendon is attached to the distal-end region of the catheter sheath. The proximal end of the core is coupled to a positioning mechanism within the catheter handle and the distal end of the core floats within the catheter sheath. The position of the distal end of the core can be adjusted by advancing or retracting the positioning mechanism within the handle. Axial movement of the steering tendon in the proximal direction causes the distal-end region of the catheter sheath to deflect, while longitudinal adjustment of the curved core changes the deflection profile of the distal-end region of the catheter sheath.Type: GrantFiled: November 16, 2001Date of Patent: September 9, 2003Assignee: Cardiac Pacemakers, Inc.Inventor: Robert C. Hayzelden
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Patent number: 6605086Abstract: A catheter includes a steering mechanism for manipulating the distal end of the catheter to obtain a plurality of deflection profiles, and a torque transfer system at the distal portion to enhance torque transfer from the handle to the distal tip. The steering mechanism includes two steering tendons. The steering tendons are attached to the distal-end region of the catheter. The steering tendons may be located approximately angularly aligned, thus causing the deflection profiles to be unidirectional. Alternatively, the steering tendons may be located angularly separated from each other, thus causing the deflection profiles to be bidirectional. In other aspects, the torque transfer system includes a flat ribbon within the relatively flexible distal-end region to enhance torque transfer through the distal-end region of the catheter.Type: GrantFiled: May 2, 2001Date of Patent: August 12, 2003Assignee: Cardiac Pacemakers, Inc.Inventors: Robert C. Hayzelden, John A. Simpson, Wade A. Bowe, Andrea M. Moore, Jesse Flores
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Patent number: 6585718Abstract: A catheter includes a steering mechanism for manipulating the distal end of the catheter to obtain a plurality of deflection profiles, a torque transfer system to enhance torque transfer from the handle to the distal tip, and a support system to reduce undesirable deformation of the distal-end region during steering. The torque transfer system includes a flat ribbon within the relatively flexible distal-end region to enhance torque transfer through the distal-end region of the catheter. The support system includes a compression cage and longitudinal struts that are located within the distal-end region of the catheter. The support system can support axial loads and deflect laterally in the direction of the steering, thereby reducing the amount of stretching and compression of the catheter sheath within the deflecting region.Type: GrantFiled: May 2, 2001Date of Patent: July 1, 2003Assignee: Cardiac Pacemakers, Inc.Inventors: Robert C. Hayzelden, John A. Simpson, Wade A. Bowe, Andrea M. Moore, Jesse Flores
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Publication number: 20030097128Abstract: A catheter includes a steering tendon and a longitudinally adjustable core having a curved shape in the distal portion thereof. The steering tendon is attached to the distal-end region of the catheter sheath. The proximal end of the core is coupled to a positioning mechanism within the catheter handle and the distal end of the core floats within the catheter sheath. The position of the distal end of the core can be adjusted by advancing or retracting the positioning mechanism within the handle. Axial movement of the steering tendon in the proximal direction causes the distal-end region of the catheter sheath to deflect, while longitudinal adjustment of the curved core changes the deflection profile of the distal-end region of the catheter sheath.Type: ApplicationFiled: November 16, 2001Publication date: May 22, 2003Inventor: Robert C. Hayzelden
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Publication number: 20030050598Abstract: A catheter includes a steering system for manipulating the distal-end region of a sheath having a plurality of electrodes into direct contact with difficult-to-reach areas of the human body. The steering system includes a core base, a core distal tip, a stylet, a steering tendon, and a lever. Movement of the lever applies tension to the steering tendon causing the distal end of the sheath to deflect. A positioning mechanism, including a slidable controller, adjusts the position of the steering system relative to the catheter sheath to thereby provide multiple steering profiles.Type: ApplicationFiled: September 13, 2001Publication date: March 13, 2003Inventor: Robert C. Hayzelden
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Publication number: 20020165534Abstract: A catheter includes a steering mechanism for manipulating the distal end of the catheter to obtain a plurality of deflection profiles, and a torque transfer system at the distal portion to enhance torque transfer from the handle to the distal tip. The steering mechanism includes two steering tendons. The steering tendons are attached to the distal-end region of the catheter. The steering tendons may be located approximately angularly aligned, thus causing the deflection profiles to be unidirectional. Alternatively, the steering tendons may be located angularly separated from each other, thus causing the deflection profiles to be bidirectional. In other aspects, the torque transfer system includes a flat ribbon within the relatively flexible distal-end region to enhance torque transfer through the distal-end region of the catheter.Type: ApplicationFiled: May 2, 2001Publication date: November 7, 2002Inventors: Robert C. Hayzelden, John A. Simpson, Wade A. Bowe, Andrea M. Moore, Jesse Flores
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Publication number: 20020165485Abstract: A catheter handle includes a steering controller to be used in conjunction with a steerable catheter shaft, and a steering tendon tensioning device. The operator deflects the profile of a distal-end region of the catheter by rotating the steering controller. Spring devices located on the steering tendons maintain the steering tendons in tension during manipulation of the steering controller. A locking device locks the steering controller in place relative to the handle.Type: ApplicationFiled: May 4, 2001Publication date: November 7, 2002Inventors: John A. Simpson, Robert C. Hayzelden
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Publication number: 20020165461Abstract: A catheter includes a steering mechanism for manipulating the distal end of the catheter to obtain a plurality of deflection profiles, a torque transfer system to enhance torque transfer from the handle to the distal tip, and a support system to reduce undesirable deformation of the distal-end region during steering. The torque transfer system includes a flat ribbon within the relatively flexible distal-end region to enhance torque transfer through the distal-end region of the catheter. The support system includes a compression cage and longitudinal struts that are located within the distal-end region of the catheter. The support system can support axial loads and deflect laterally in the direction of the steering, thereby reducing the amount of stretching and compression of the catheter sheath within the deflecting region.Type: ApplicationFiled: May 2, 2001Publication date: November 7, 2002Inventors: Robert C. Hayzelden, John A. Simpson, Wade A. Bowe, Andrea M. Moore, Jesse Flores