Patents by Inventor Kai Kroll

Kai Kroll 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).

  • Publication number: 20060142809
    Abstract: A method and system for treating an individual experiencing cardiac arrest using an automatic external defibrillator (AED) includes placing a first and a second electrode of the AED in electrical communication with an exterior surface of the individual. A need to apply a high voltage defibrillation signal to the individual is automatically determined. The method also includes automatically causing the AED to apply a medium voltage therapy (MVT) signal through the first and the second electrodes to the individual. The MVT signal is applied to induce a hemodynamic effect in the individual. Alternatively, or additionally, the MVT signal is applied to induce a respiratory effect in the individual. Optionally, the MVT signal is applied before determining the need to apply the defibrillation signal.
    Type: Application
    Filed: November 22, 2005
    Publication date: June 29, 2006
    Inventors: Kai Kroll, Mark Kroll, Tom Bugliosi
  • Publication number: 20050222646
    Abstract: This invention relates generally to the electrical treatment of malignant tumors and neoplasms by applying a voltage to affected tissue. Devices and various adaptations therein are described for use in electrical therapy. In one embodiment, electrical therapy output is modified to deliver a duty cycle less than 100 percent.
    Type: Application
    Filed: June 29, 2004
    Publication date: October 6, 2005
    Inventors: Kai Kroll, Edward Schroeppel, Mark Kroll
  • Publication number: 20050222623
    Abstract: This present embodiment relates generally to the electrical treatment of malignant tumors and neoplasms by applying a voltage to affected tissue. Devices and various adaptations therein are described for use in electrical therapy. Additionally, various ambulatory devices are described which advantageously increase versatility of the electrical therapy system. The ambulatory devices may include an internal and external power source and/or a first and second power source. The ambulatory devices may also include communication means for communicating between various portions of the device.
    Type: Application
    Filed: April 6, 2004
    Publication date: October 6, 2005
    Applicant: OncoStim Inc., a Minnesota corporation
    Inventors: Kai Kroll, Mark Kroll, Edward Schroeppel
  • Publication number: 20050197676
    Abstract: An electrical method and apparatus for stimulating cardiac cells causing contraction to force hemodynamic output during fibrillation, hemodynamically compromising tachycardia, or asystole. Forcing fields are applied to the heart to give cardiac output on an emergency basis until the arrhythmia ceases or other intervention takes place. The device is used as a stand alone external or internal device, or as a backup to an ICD, atrial defibrillator, or an anti-tachycardia pacemaker. The method and apparatus maintain some cardiac output and not necessarily defibrillation.
    Type: Application
    Filed: February 8, 2005
    Publication date: September 8, 2005
    Inventors: Kai Kroll, Mark Kroll
  • Patent number: 6875166
    Abstract: A method for creating a coupling between an implantable device, such as a transducer, and a structure of the ear, such as an ossicle, in an implantable hearing assistance device. The coupling permits slip between the device and the structure and provides a neutral load. The device is positioned such that it either lightly touches or is positioned away from the structure. In one embodiment, the surface of the device or the structure is cleaned while the remaining surface, that is, the surface not cleaned, is coated with a solution. An adhesive material is applied between the device and the structure. The solution prevents a bond from forming at that interface while a bond forms at the remaining surface. Alternatively, a compliant adhesive may be used. In another embodiment, the surface of the device is coated with a gel, the gel optionally being covered with a metallic foil.
    Type: Grant
    Filed: April 24, 2003
    Date of Patent: April 5, 2005
    Assignee: St. Croix Medical, Inc.
    Inventors: Kai Kroll, Ann M. Gronda, Mike Schugt
  • Patent number: 6853859
    Abstract: An electrical method and apparatus for stimulating cardiac cells causing contraction to force hemodynamic output during fibrillation, hemodynamically compromising tachycardia, or asystole. Forcing fields are applied to the heart to give cardiac output on an emergency basis until the arrhythmia ceases or other intervention takes place. The device is used as a stand alone external or internal device, or as a backup to an ICD, atrial defibrillator, or an anti-tachycardia pacemaker. The method and apparatus maintain some cardiac output and not necessarily defibrillation.
    Type: Grant
    Filed: October 20, 2000
    Date of Patent: February 8, 2005
    Assignee: Galvani, Ltd.
    Inventors: Kai Kroll, Mark W. Kroll
  • Publication number: 20050004507
    Abstract: This invention relates generally to the electrical treatment of malignant tumors and neoplasms by applying a voltage to affected tissue. Devices and various adaptations therein are described for use in electrical therapy. Additionally, various chemotherapeutic agent and radiation therapies are described which may be advantageously used in conjunction with electrical therapy to ameliorate cancer.
    Type: Application
    Filed: May 7, 2004
    Publication date: January 6, 2005
    Applicant: OncoStim. Inc.
    Inventors: Edward Schroeppel, Mark Kroll, Kai Kroll
  • Publication number: 20040181117
    Abstract: A method and apparatus transduces between mechanical and electrical signals within a middle ear to improve hearing. An electromechanical transducer film, preferably polyvinylidene fluoride (PVDF), is carried by a mount secured to the middle ear. The film is constrained by the mount, or by the mount and an auditory element. The invention includes substantially straight, bow-shaped, hoop-shaped, and bi-element transducer film embodiments. The film transduces between mechanical vibrations of an auditory element, such as the malleus or stapes, and electrical signals for use with an electronics unit of a partial middle ear implantable (P-MEI) or total middle ear implantable (T-MEI) hearing aid.
    Type: Application
    Filed: April 13, 2001
    Publication date: September 16, 2004
    Inventors: Theodore P. Adams, Bruce A. Brillhart, Donald J. Bushek, Kai Kroll
  • Patent number: 6755778
    Abstract: A method and apparatus assists a hearing impaired person by introducing and maintaining a mechanical feedback barrier between a microphone and a transducer of an implantable hearing assistance system. In this method, mechanical sound vibrations impinging on the person's body habitus are received with an electromechanical device (e.g. microphone) disposed at a body habitus sound reception site. The body habitus sound reception site can be located within the external auditory canal, or external of the external auditory canal either subdermally or external of the scalp. The mechanical sound vibrations are converted with the electromechanical device to an amplified electrical signal. Next, the amplified electrical signal is delivered to the inner ear with a transducer operatively coupled between the electromechanical device and the middle ear or the inner ear.
    Type: Grant
    Filed: October 18, 2002
    Date of Patent: June 29, 2004
    Assignee: St. Croix Medical, Inc.
    Inventors: Kai Kroll, Donald J. Bushek, Scott C. Meyerson, Paul J. Urbanski
  • Publication number: 20040044373
    Abstract: An electrical method and apparatus for stimulating cardiac cells causing contraction to force hemodynamic output during fibrillation, hemodynamically compromising tachycardia, or asystole. Forcing fields are applied to the heart to give cardiac output on an emergency basis until the arrhythmia ceases or other intervention takes place. The device is used as a stand alone external or internal device, or as a backup to an ICD, atrial defibrillator, or an anti-tachycardia pacemaker. The method and apparatus maintain some cardiac output and not necessarily defibrillation.
    Type: Application
    Filed: May 5, 2003
    Publication date: March 4, 2004
    Inventors: Kai Kroll, Mark W. Kroll
  • Publication number: 20040039244
    Abstract: A method for creating a coupling between an implantable device, such as a transducer, and a structure of the ear, such as an ossicle, in an implantable hearing assistance device. The coupling permits slip between the device and the structure and provides a neutral load. The device is positioned such that it either lightly touches or is positioned away from the structure. In one embodiment, the surface of the device or the structure is cleaned while the remaining surface, that is, the surface not cleaned, is coated with a solution. An adhesive material is applied between the device and the structure. The solution prevents a bond from forming at that interface while a bond forms at the remaining surface. Alternatively, a compliant adhesive may be used. In another embodiment, the surface of the device is coated with a gel, the gel optionally being covered with a metallic foil.
    Type: Application
    Filed: April 24, 2003
    Publication date: February 26, 2004
    Inventors: Kai Kroll, Ann M. Gronda, Mike Schugt
  • Patent number: 6689045
    Abstract: An implantable hearing assistance system includes a sensor transducer and an electronics unit. The sensor transducer, such as a piezoelectric transducer, is operatively coupled to an auditory element of the middle ear (e.g., malleus), and electrically connected to the electronics unit. The transducer and the electronics unit are arranged together to minimize the driving impedance and lead capacitance therebetween, thereby minimizing susceptibility to electromagnetic interference and minimizing high audio frequency signal attenuation. In one example, the transducer and the electronics unit are disposed immediately adjacent each other or physically joined together to virtually eliminate (or at least significantly shorten) the length of the electrical connection between the transducer and the electronics unit.
    Type: Grant
    Filed: December 12, 2001
    Date of Patent: February 10, 2004
    Assignee: St. Croix Medical, Inc.
    Inventors: Joel A. Kennedy, Kai Kroll
  • Publication number: 20040010290
    Abstract: This invention relates generally to the electrical treatment of malignant tumors and neoplasms by applying a voltage to affected tissue. Devices and various adaptations therein are described for use in electrical therapy. Additionally, various chemotherapeutic agent and radiation therapies are described which may be advantageously used in conjunction with electrical therapy to ameliorate cancer.
    Type: Application
    Filed: May 7, 2003
    Publication date: January 15, 2004
    Inventors: Edward A. Schroeppel, Mark W. Kroll, Kai Kroll
  • Patent number: 6592513
    Abstract: A method for creating a coupling between an implantable device, such as a transducer, and a structure of the ear, such as an ossicle, in an implantable hearing assistance device. The device is positioned such that it either lightly touches or is positioned between a fraction of a millimeter to a few millimeters from the structure. The surface of either the device or the structure is cleaned and suctioned while the remaining surface, that is, the surface that has not been cleaned, is coated with a thin layer of solution. An adhesive material is applied to the space between the device and the structure and allowed to cure. The applied solution prevents a mechanical and/or chemical bond from forming at that interface while a bond does form at the remaining surface. Thus a coupling is created that permits slip between the device and the structure and provides a neutral load.
    Type: Grant
    Filed: September 6, 2001
    Date of Patent: July 15, 2003
    Assignee: St. Croix Medical, Inc.
    Inventors: Kai Kroll, Ann M. Gronda
  • Patent number: 6585637
    Abstract: A method and apparatus for improving hearing by preventing acoustic feedback from the ossicular chain into a middle ear-implanted microphone of an implantable hearing assistance system. Mechanical sound vibrations are received with an acoustic microphone implanted in the middle ear. The mechanical sound vibrations are converted to an amplified electrical signal and the amplified electrical signal is delivered to the inner ear with a transducer operatively coupled between the microphone and the inner ear. A mechanical feedback barrier is established by removing or separating a portion of the hearing-impaired person's ossicular chain (e.g., malleus or incus) to prevent transmission of sound feedback into the microphone from the tympanic membrane via the ossicular chain. Implanting an acoustic microphone permits alternative implantation methods other than a mastoidectomy.
    Type: Grant
    Filed: May 25, 2001
    Date of Patent: July 1, 2003
    Assignee: St. Croix Medical, Inc.
    Inventors: Bruce A. Brillhart, Kai Kroll
  • Patent number: 6567697
    Abstract: An electrical method and apparatus for stimulating cardiac cells causing contraction to force hemodynamic output during fibrillation, hemodynamically compromising tachycardia, or asystole. Forcing fields are applied to the heart to give cardiac output on an emergency basis until the arrhythmia ceases or other intervention takes place. The device is used as a stand alone external or internal device, or as a backup to an ICD, atrial defibrillator, or an anti-tachycardia pacemaker. The method and apparatus maintain some cardiac output and not necessarily defibrillation.
    Type: Grant
    Filed: October 20, 2000
    Date of Patent: May 20, 2003
    Assignee: Galvani, Ltd.
    Inventors: Kai Kroll, Mark W. Kroll
  • Patent number: 6560484
    Abstract: An electrical method and apparatus for stimulating cardiac cells causing contraction to force hemodynamic output during fibrillation, hemodynamically compromising tachycardia, or asystole. Forcing fields are applied to the heart to give cardiac output on an emergency basis until the arrhythmia ceases or other intervention takes place. The device is used as a stand alone external or internal device, or as a backup to an ICD, atrial defibrillator, or an anti-tachycardia pacemaker. The method and apparatus maintain some cardiac output and not necessarily defibrillation.
    Type: Grant
    Filed: October 20, 2000
    Date of Patent: May 6, 2003
    Assignee: Galvani, Ltd.
    Inventors: Kai Kroll, Mark W. Kroll
  • Patent number: 6540662
    Abstract: A method and apparatus assists a hearing impaired person by introducing and maintaining a mechanical feedback barrier between a microphone and a transducer of an implantable hearing assistance system. In this method, mechanical sound vibrations impinging on the person's body habitus are received with an electromechanical device (e.g. microphone) disposed at a body habitus sound reception site. The body habitus sound reception site can be located within the external auditory canal, or external of the external auditory canal either subdermally or external of the scalp. The mechanical sound vibrations are converted with the electromechanical device to an amplified electrical signal. Next, the amplified electrical signal is delivered to the inner ear with a transducer operatively coupled between the electromechanical device and the middle ear or the inner ear.
    Type: Grant
    Filed: July 5, 2001
    Date of Patent: April 1, 2003
    Assignee: St. Croix Medical, Inc.
    Inventors: Kai Kroll, Donald J. Bushek, Scott C. Meyerson, Paul J. Urbanski
  • Publication number: 20030032856
    Abstract: A method and apparatus assists a hearing impaired person by introducing and maintaining a mechanical feedback barrier between a microphone and a transducer of an implantable hearing assistance system. In this method, mechanical sound vibrations impinging on the person's body habitus are received with an electromechanical device (e.g. microphone) disposed at a body habitus sound reception site. The body habitus sound reception site can be located within the external auditory canal, or external of the external auditory canal either subdermally or external of the scalp. The mechanical sound vibrations are converted with the electromechanical device to an amplified electrical signal. Next, the amplified electrical signal is delivered to the inner ear with a transducer operatively coupled between the electromechanical device and the middle ear or the inner ear.
    Type: Application
    Filed: October 18, 2002
    Publication date: February 13, 2003
    Inventors: Kai Kroll, Donald J. Bushek, Scott C. Meyerson, Paul J. Urbanski
  • Patent number: 6491722
    Abstract: A dual path implantable hearing assistance system transduces sound vibrations of the malleus in one or both ears into electrical signals, processes the electrical signals to provide one or more resulting output electrical signals, and transduces the output signals into mechanical vibrations provided to the stapes in one or both ears. Communication between an electronics device and at least one ear is either wireless or through subcutaneous lead wires. The system may have two input paths and two output paths, programmable to provide the function of two separate single path systems, but capable of combining the signals such as by weighted summing. The system may have also have two input paths and one output path; or, one input path and two output paths; or, one input path and one output path, each associated with a different ear.
    Type: Grant
    Filed: January 4, 2000
    Date of Patent: December 10, 2002
    Assignee: St. Croix Medical, Inc.
    Inventors: Kai Kroll, Joel A. Kennedy