Patents by Inventor Ake Sivard
Ake Sivard 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: 8634916Abstract: Heart stimulating device comprising a stimulation pulse generator arranged in a stimulator housing, where the heart stimulating device is coupled to a plurality of stimulation and sensing electrodes arranged at one or many leads, the electrodes being adapted to be arranged in connection with the heart to stimulate the heart. The device further comprises a sensing unit adapted to sense electrical heart tissue responses to applied electrical stimulation pulses via said electrodes. The pulse generator is adapted to generate stimulation pulses to be applied to the heart tissue by different electrodes, and for each of the applied pulses resulting in a depolarization wave in the heart tissue a depolarization wave velocity parameter of the wave is determined by the sensing unit and stored in a memory unit.Type: GrantFiled: September 30, 2009Date of Patent: January 21, 2014Assignee: St. Jude Medical ABInventors: Ake Sivard, Anders Lindgren, Karlsson Andreas
-
Patent number: 8538544Abstract: An electronic implantable device with a power saving circuit incorporates a radio frequency receiver with high power consumption. The first power radio receiver of high power is normally turned off during a period of inactivity. When an analyzer forming part of a second radio receiver and coupled to the first radio receiver detects a predetermined identification code in a received radio frequency signal received by the second radio receiver, it outputs a signal to turn on the first power receiver.Type: GrantFiled: March 24, 2006Date of Patent: September 17, 2013Assignee: Microsemi Semiconductor ABInventor: Ake Sivard
-
Publication number: 20120185013Abstract: Heart stimulating device comprising a stimulation pulse generator arranged in a stimulator housing, where the heart stimulating device is coupled to a plurality of stimulation and sensing electrodes arranged at one or many leads, the electrodes being adapted to be arranged in connection with the heart to stimulate the heart. The device further comprises a sensing unit adapted to sense electrical heart tissue responses to applied electrical stimulation pulses via said electrodes. The pulse generator is adapted to generate stimulation pulses to be applied to the heart tissue by different electrodes, and for each of the applied pulses resulting in a depolarization wave in the heart tissue a depolarization wave velocity parameter of the wave is determined by the sensing unit and stored in a memory unit.Type: ApplicationFiled: September 30, 2009Publication date: July 19, 2012Applicant: ST. JUDE MEDICAL ABInventors: Åke Sivard, Anders Lindgren, Karlsson Andreas
-
Publication number: 20120035693Abstract: A medical implantable lead is adapted to be implanted into a human or animal body for monitoring and/or controlling of an organ inside the body, and has in a distal end, a combined fixation means and electrode member in form of a helix, which is rotatable in relation to the lead and extendable out from the distal end by rotation of a tubular torque transferring member. The helix is electrically connected to a connector in the proximal end by at least one electrically conducting wire, which is formed as an electrically conducting coil, which is separate from the tubular torque transferring member and that includes one or more individual wires each having an electrically conducting wire core and a surrounding electrically insulating layer. The tubular torque transferring member has no electrically conducting function to or from the helix.Type: ApplicationFiled: July 10, 2009Publication date: February 9, 2012Inventors: Henrik Djurling, Kenneth Dahlberg, Mikael Forslund, Patrik Forsström, Leda Henriquez, Linn Olsen, Olof Stegfeldt, Åke Sivard
-
Publication number: 20120022356Abstract: A medical implantable lead is adapted to be implanted into a human or animal body for monitoring and/or controlling of an organ inside the body. The lead has in a distal end, a combined fixation means and electrode member in form of a helix, which is connected to a rotatable tubular member being connected to a rotatable member at a proximal end of the lead, and which is rotatable in relation to the lead and extendable out from the distal end, by rotation of the control member and the tubular torque transferring member, to be able to fixate the distal end of the lead to the organ by being screwed into the tissue.Type: ApplicationFiled: October 30, 2009Publication date: January 26, 2012Inventors: Linn Olsen, Mikael Forslund, Henrik Djurling, Patrik Forsström, Leda Henriquez, Kenneth Dahlberg, Olof Stegfeldt, Åke Sivard
-
Publication number: 20110251654Abstract: An implantable electrode lead for tissue stimulation adapted to be attached to an implantable tissue stimulator provided with a pulse generator, has at least two stimulation electrodes to apply stimulation pulses to said tissue and arranged close to the distal end of the electrode lead, and at least two electrical conductors to connect said electrodes to said pulse generator. The electrode lead further has a switching unit arranged close to the distal end of the electrode lead and adapted to switch the electrode lead between a local pacing mode and a normal pacing mode, the switching unit being controlled by a mode control signal. Further, a pacing module is arranged close to the distal end of the electrode lead and in relation to the switching unit and being connectable to said at least two stimulation electrodes, the pacing module includes a pulse generating unit to generate stimulating pulses to be applied to the tissue by the stimulation electrodes.Type: ApplicationFiled: December 19, 2008Publication date: October 13, 2011Inventors: Åke Sivard, Gustav Pellijeff, Hans Strandberg, Leda Henriquez, Åsa Broomé, Kenneth Dahlberg
-
Publication number: 20110245646Abstract: A medical implantable lead adapted to be implanted into a human or animal body for monitoring and/or controlling of an organ inside the body has a fixation in a distal end, which is adapted to fix a distal end of the lead to the organ, an electrode member in the distal end adapted to be in contact with tissue of the organ and receive and/or transmit electrical signals from and/or to the organ, and at least one electrically conducting coil, which includes one or more electrically conducting helical wires and that is adapted to connect the electrode member in the distal end with a monitoring and/or controlling device in a proximal end of the lead. One or more of the individual wires of the coil has a wire core that is provided with a surrounding electrically insulating layer, which in turn is provided with a surrounding electrically conducting shield layer, and the coil is close lapped such that electrically conducting shield layers of adjacent loops of the coil are in electrical contact with each other.Type: ApplicationFiled: December 2, 2008Publication date: October 6, 2011Inventors: Hans Strandberg, Åke Sivard, Åsa Broomé, Kenneth Dahlberg, Gustav Pellijeff, Leda Henriquez
-
Publication number: 20060229053Abstract: An electronic implantable device with a power saving circuit incorporates a radio frequency receiver with low power consumption. A high power radio receiver is normally turned off during a period of inactivity. When an analyzer detects a predetermined identification code in a received radio frequency signal, it outputs a signal to turn on the high power receiver.Type: ApplicationFiled: March 24, 2006Publication date: October 12, 2006Applicant: Zarlink Semiconductor ABInventor: Ake Sivard
-
Patent number: 6894633Abstract: An analog-to-digital converter for ultra low power applications, such as pacemakers, has a digitizer for producing a digital output signal from a sampled analog input signal. The digitizer is normally in off state to save current. A sample-and-hold circuit stores a plurality of successive samples of the analog input signal. A control element turns on the digitizer in response to an activation signal, sequentially applies the stored samples to the digitizer in response to the activation signal and thus reconstructs the signal as it existed prior to the activation signal.Type: GrantFiled: December 8, 2003Date of Patent: May 17, 2005Assignee: Zarlink Semiconductor ABInventor: Ake Sivard
-
Publication number: 20040140921Abstract: An analog-to-digital converter for ultra low power applications, such as pacemakers, has a digitizer for producing a digital output signal from a sampled analog input signal. The digitizer is normally in off state to save current. A sample-and-hold circuit stores a plurality of successive samples of the analog input signal. A control element turns on the digitizer in response to an activation signal, sequentially applies the stored samples to the digitizer in response to the activation signal and thus reconstructs the signal as it existed prior to the activation signal.Type: ApplicationFiled: December 8, 2003Publication date: July 22, 2004Applicant: Zarlink Semiconductor ABInventor: Ake Sivard
-
Publication number: 20030236077Abstract: An electronic device with a power saving circuit incorporates a radio frequency receiver with low power consumption and including a frequency down converter. A functional device, which may be a high power radio receiver, is normally turned off during a period of inactivity. An analyzer detects a predetermined identification code in a received radio frequency signal and outputs a signal to turn on the functional device.Type: ApplicationFiled: April 7, 2003Publication date: December 25, 2003Applicant: Zarlink Semiconductor ABInventor: Ake Sivard
-
Patent number: 5807144Abstract: A device for affixing an elongate contact pin on an electrode lead for connection to a medical implant, such as a heart stimulator, contains an elongate connector part with an opening at one end into which the contact pin can be inserted. The connector part has an affixing part which, when acted on by the contact pin, can move in the connector part's longitudinal direction between a contact pin-affixing position and a contact pin-release position.Type: GrantFiled: January 21, 1997Date of Patent: September 15, 1998Assignee: Pacesetter ABInventor: Ake Sivard
-
Patent number: 5458115Abstract: A detector for sensing events in living tissue, such as electrical events in a heart, contains a microprocessor functioning as comparator which compares an input signal corresponding to electrical signals from the living tissue with a defined signal detection level, and an event is deemed to have occurred if the input signal exceeds the defined detection level. More reliable detection of events in the presence of noise is achieved by also providing an integrator which generates the input signal to the comparator by integrating electrical signals obtained from the tissue, the comparator then comparing the integrated signal with a detection level selected for use with the integrated signal.Type: GrantFiled: November 16, 1993Date of Patent: October 17, 1995Assignee: Siemens Elema ABInventors: Ake Sivard, Kurt Hoegnelid
-
Method for generating a signal corresponding to the respiration volume per unit of time of a patient
Patent number: 5355894Abstract: For generating a signal corresponding to the respiration volume per unit of time of a patient, a signal component correlated with the respiration is filtered out of a measured impedance signal acquired in the region of the heart of the patient, and the zero-axis crossings of this signal component are detected and the maximum values respectively arising in between two successive pairs of zero-axis crossings are identified in terms of amplitude. These maxima are added during a prescribed time interval to form a value corresponding to the respiration volume per unit of time.Type: GrantFiled: August 23, 1993Date of Patent: October 18, 1994Assignee: Siemens AktiengesellschaftInventor: Ake Sivard