Richard A Schomburg

US Patent:

6577892, Jun 10, 2003

Filed:

Feb 19, 2001

Appl. No.:

09/788756

Inventors:

Richard A. Schomburg - Hillsboro OR

Assignee:

Biotonik Mess -und Therapiegeraete GmbH Co. Ingenieurbuero Berlin - Berlin

International Classification:

A61B 504

US Classification:

600509, 600300, 600523

Abstract:

Apparatus for processing body signals, comprising at least one sensor ( ) for picking up in particular electrical signals from a living body, and means ( ) for preparing picked-up signals for further processing, and at least one first memory ( ) for a picked-up measurement signal or signal portions, comprising at least one second memory ( ) which contains a predeterminable comparison signal which is finite in respect of time, and signal comparison means ( ) which are connected to the second memory ( ) and the first memory ( ) and which are adapted for sliding comparison of signal portions, which overlap in respect of time, of the measurement signal in the first memory ( ) to the comparison signal stored in the second memory ( ) and for output of a correlation coefficient representing the similarity of each compared signal portion of the measurement signal to the comparison signal.

US Patent:

6594520, Jul 15, 2003

Filed:

Mar 29, 2001

Appl. No.:

09/821781

Inventors:

Richard A. Schomburg - Hillsboro OR
Peter Thomas Bauer - West Linn OR

Assignee:

Biotronik Mess-und Therapiegeraete GmbH Co. Ingenieurbuero Berlin - Berlin

International Classification:

A61B 504

US Classification:

600515, 600521

Abstract:

An apparatus for processing physiological signals, which includes a signal pick-up unit for picking up physiological measurement signals, in particular for picking up electrical signals of a heart, and first detection means which are connected to the signal pick-up unit and include signal processing means such as a filter and a first threshold value store and a comparison unit which is connected thereto and which is adapted to output a first marker signal if the amplitude of the measurement signal exceeds a threshold value stored in the first threshold value store, second detection means which are connected to the signal pick-up unit and include a second threshold value store and a second comparison unit which is connected thereto and which is adapted to output a second marker signal if the amplitude of the measurement signal exceeds a threshold value stored in the second threshold value store, and an evaluation unit which is connected to the first and second detection means for taking over a respective series of the first and second marker signals and for processing the series of marker signals to afford a single filtered series of marker signals, for analysis of the time succession of the marker signals, in particular the intervals between marker signals of the filtered series, and output of a recognition signal which is dependent on the analysis.

US Patent:

7596535, Sep 29, 2009

Filed:

Sep 29, 2003

Appl. No.:

10/674270

Inventors:

Christopher S. de Voir - Tigard OR, US
Richard A. Schomburg - Hillsboro OR, US

Assignee:

Biotronik GmbH & Co. KG

International Classification:

G06K 9/62
G06K 9/64

US Classification:

706 20, 706 23

Abstract:

An apparatus according to the invention for the classification of physiological events has a signal input for the input of a physiological signal representing or constituting a physiological event and a classification unit for classifying the physiological signal on the basis of its signal shape. The classification unit includes a transformation unit which is designed to carry out transformation of the physiological signal in such a way that as the output signal it outputs a number of values representing the physiological signal and based on the transformation; and a probabilistic neural network which is connected to the transformation unit to receive the values and which contains a number of event classes which represent physiological events and which in turn are each represented by a set of comparative values, which probabilistic neural network is adapted on the basis of the comparison of the values with the comparative values to effect an association of the physiological signal represented by the values with one of the event classes.

US Patent:

7761163, Jul 20, 2010

Filed:

Jun 12, 2006

Appl. No.:

11/451138

Inventors:

Christopher S. de Voir - Tigard OR, US
Jie Lian - Beaverton OR, US
Richard A. Schomburg - Hillsboro OR, US
Duane Patterson - Tigard OR, US
Hannes Kraetschmer - West Linn OR, US
Dirk Muessig - West Linn OR, US

Assignee:

Biotronik CRM Patent AG - Baar

International Classification:

A61N 1/362

US Classification:

607 28, 607 9, 607 14

Abstract:

The invention relates to heart stimulators and implantable atrial pacemakers which utilize a rhythm based atrial capture threshold test wherein in a ventricle based DDI mode a predetermined number of ventricle started atrial and ventricular escape intervals are triggered with an overdrive rate about 20% higher than an intrinsic heart rate. The number of atrial sense events during atrial capture threshold test is counted. Too high of a number of atrial sense events indicates loss of capture due to too small of a pulse strength of the atrial stimulation pulses.

US Patent:

7822475, Oct 26, 2010

Filed:

Dec 17, 2004

Appl. No.:

11/015561

Inventors:

Richard A. Schomburg - Hillsboro OR, US
Christopher S. de Voir - Tigard OR, US
Dirk Muessig - West Linn OR, US

Assignee:

Biotronik CRM Patent AG

International Classification:

A61N 1/365

US Classification:

607 27, 600510

Abstract:

An implantable medical device comprises at least two sensing channels for receiving sensed first and second location electrical signals originating from two different locations of a heart. A control unit is connected to the sensing channels and is adapted to process sensed electrical signals originating from first and second locations of the heart. The control unit incorporates an adaptive filter compensator adapted to generate an estimate signal for compensating a far-field contribution of the second location signal to the first location signal, thereby generating an output signal representing a near field signal originating from the first location. A gate is connected to the second location sensing channel and is adapted to enable the adaptive filter compensator only if a predetermined signal is sensed via the second location sensing channel.

US Patent:

20050071304, Mar 31, 2005

Filed:

Sep 29, 2003

Appl. No.:

10/674280

Inventors:

Richard Schomburg - Hillsboro OR, US

International Classification:

A61B005/00
G06F015/18
G06G007/00
G06E003/00
G06E001/00

US Classification:

706020000, 600300000

Abstract:

An apparatus according to the invention for the classification of physiological events on the basis of physiological signals which represent or constitute the physiological events by means of a probabilistic neural network includes a probabilistic neural network which is adapted to receive a set of values representing the physiological signal and which contains a number of event classes which represent physiological events and which are respectively determined by a number of comparative values, which network is adapted on the basis of the comparison of the set of values with the comparative values to implement an association of the physiological signal represented by the set of values with one of the event classes, and an updating unit connected to the probabilistic neural network for updating the comparative values of an event class on the basis of the set of values of at least one physiological signal which has been associated with said event class in a preceding association operation.

US Patent:

44678134, Aug 28, 1984

Filed:

May 4, 1982

Appl. No.:

6/374697

Inventors:

Richard A. Schomburg - Hillsboro OR

Assignee:

Cardiac Resuscitator Corporation - Wilsonville OR

International Classification:

A61B 504

US Classification:

128702

Abstract:

A biological signal source amplifier having a rapid overload recovery capability and an output reference level translation feature. The amplifier responds to input signals of excessive amplitude by actively decreasing the response time of a reactive input coupling circuit when the input signal crosses predetermined dynamic limits. A differential amplifier is used in such a way as to produce an output referenced to a voltage level other than power supply ground. A level translation feature is provided for translating the output signal to the input of a subsequent circuit having a different reference level without introducing a dc offset or other associated amplitude distortion, or effects of capacitive coupling on low-frequency response.

US Patent:

47854758, Nov 15, 1988

Filed:

Jan 29, 1987

Appl. No.:

7/008617

Inventors:

Eugene Rimkeit - Portland OR
Richard Schomburg - Hillsboro OR

International Classification:

H03G 500

US Classification:

381 98

Abstract:

Apparatus for equalizing a soundfield comprises an amplifier and a gain control circuit for selectively adjusting the gain of the amplifier as a function of frequency in response to data values received by the gain control circuit. The apparatus has power supply terminals for supplying operating current from an external power source to the amplifier and the gain control circuit. In addition, the apparatus comprises an electonic storage device for storing data values and applying those data values to the gain control circuit. The stored data values are maintained in the apparatus upon interruption of the supply of operating current to the power supply terminals. The apparatus has an input port for applying data values to the storage device, and does not have manually actuable controls for selectively adjusting the stored data values.