1
Anders Lekholm: Heart pacemaker. Siemens Aktiengesellschaft, Hill Van Santen Steadman & Simpson, August 16, 1988: US04763646 (107 worldwide citation)

A heart pacemaker for supplying pacing signals to a heart includes circuitry for controlling operation of the pacemaker in dependence upon the occurrence of heart sounds. The pacemaker includes a detector for such sounds and circuitry for generating a control signal therefrom which is supplied to th ...


2
Anders Lekholm: Rate-responsive pacemaker with circuitry for processing multiple sensor inputs. Siemens Pacesetter, Leslie S Miller, March 24, 1992: US05097831 (85 worldwide citation)

An implantable rate-responsive pacemaker is disclosed wherein two or more sensors indicative of physiological demand are utilized in a fashion designed to realize the advantages of both sensors in a circuit producing a rate command signal which is used to operate the pacemaker at an optimum pacing r ...


3
Anders Lekholm: Patch electrode for heart defibrillator. Siemens Pacesetter, Malcolm J Romano, August 27, 1991: US05042463 (59 worldwide citation)

A flexible, planar patch electrode for cardiac defibrillation is fabricated from conductive wire mesh covered on an insulation side by a flexible layer of insulation. The electrode provides a substantial electrical contact area of 2-4 square inches and is shaped to provide an essentially rectangular ...


4
Anders Lekholm, Ulf Fahlstroem, Hermann Groothoff: Implantable multi-pole coaxial lead. Siemens Aktiengesellschaft, June 20, 1989: US04840186 (58 worldwide citation)

An implantable lead has conductors wound in a multi-pole helix. The conductors are individually insulated by a first insulating material and the insulated conductors are embedded in, and axially separated from each other by a second tube-formed insulating material. The inner opening of the tube rece ...


5
Anders Lekholm: Rate-responsive pacemaker with circuitry for processing multiple sensor inputs. Siemens Pacesetter, Leslie S Miller, April 7, 1992: US05101824 (56 worldwide citation)

An implantable rate-responsive pacemaker is disclosed wherein two or more sensors indicative of physiological demand are utilized in a fashion designed to realize the advantages of both sensors in a circuit producing a rate command signal which is used to operate the pacemaker at an optimum pacing r ...


6
Anders Lekholm: Medical apparatus for stimulating a physiological event in a patient with a stimulation intensity automatically adapted to the physical activity of the patient and a method for adapting the stimulation intensity to the physical activity of the patient. Siemens Aktiengesellschaft, Hill Van Santen Steadman & Simpson, July 9, 1991: US05029582 (36 worldwide citation)

A medical apparatus for stimulating a physiological event in a patient, with the stimulation intensity being automatically adapted to the physical activity of the patient, includes respective sensors for monitoring the chronological curves of the temperature within the patient and at the body periph ...


7
Anders Lekholm, Roland Heinze: Rate-responsive pacing method and system employing minimum blood oxygen saturation as a control parameter and as a physical activity indicator. Siemens Pacesetter, Bryant R Gold, Malcolm J Romano, December 31, 1991: US05076271 (35 worldwide citation)

A rate-responsive pacing method and system senses the minimum blood oxygen saturation in the right atrium of a patient's heart and uses such minimum blood oxygen saturation as a control parameter for indicating the muscular activity of a patient. Because the oxygen content of the venous blood in the ...


8
Anders Lekholm, Gosta Sall, Liliane Wecke, Kurt Hognelid: Implantable heart pacemaker with a sensor for inertial and/or rotational movements of the user. Siemens Aktiengesellschaft, Hill Van Santen Steadman & Simpson, September 26, 1989: US04869251 (29 worldwide citation)

A pacemaker has a sensor for deteching inertial and/or rotational movements of a patient in whom the pacemaker is implanted. The sensor has a hollow member with at least one freely moveable member therein, the freely moveable member generating a mechanical vibration upon movement thereof within the ...


9
Anders Lekholm, David C Amundson: Cardiac pacer for pacing a human heart and pacing method. Siemens Aktiengesellschaft, Hill Van Santen Steadman & Simpson, October 6, 1987: US04697591 (27 worldwide citation)

A cardiac pacer which generates pacing pulses at a predetermined pacing rate includes a device for processing the pacing pulses according to an impedance measurement such that a respiratory signal is obtained. The predetermined pacing rate is then varied dependent on the respiratory signal.


10
Anders Lekholm: Heart pacemaker electrode having two portions of different conductive properties for stimulating and sensing. Siemens Aktiengesellschaft, Hill Van Santen Steadman & Simpson, August 2, 1988: US04760852 (26 worldwide citation)

A heart pacemaker electrode for stimulating and detecting heart voltages, has an electrode head at the distal, heart-proximate end, which functions to both stimulate the heart by supplying pulses thereto, and to sense heart activity. The surface of the electrode head is divided into portions which, ...