Patents by Inventor Lars Tenerz
Lars Tenerz 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: 7472601Abstract: The invention relates to a sensor and guide wire assembly for intravascular measurements within a living body, wherein a sensor element, which is arranged at a distal portion of a guide wire, comprises at least one piezoresistive nanowire.Type: GrantFiled: September 21, 2007Date of Patent: January 6, 2009Assignee: Radi Medical Systems ABInventors: Lars Tenerz, Leif Smith
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Patent number: 7343811Abstract: The invention relates to a sensor (23) adapted for a sensor and guide wire assembly for intravascular measurements in a living body, wherein the sensor (23) comprises a pressure sensitive part (24) and an electronic part (25), said pressure sensitive part (24) comprising a first chip (26) provided with at least one pressure sensitive device (27) and at least one piezoelectric element (35), and said electronic part (25) comprising a second chip (28) provided with at least one electric circuit, and wherein said pressure sensitive part (24) and electronic part (25) are spatially separated from each other and are electrically connected with at least one electrical lead (29).Type: GrantFiled: February 23, 2006Date of Patent: March 18, 2008Assignee: Radi Medical Systems ABInventors: Lars Tenerz, Leif Smith
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Patent number: 7329270Abstract: The invention provides a femoral compression device (11; 21) for compressing a femoral artery of a patient. The femoral compression device (11; 21) comprises a pressurizing means (12; 22), a compression plate (13; 23) for compressive bearing against a puncture site, a base portion (14; 24) provided with two opposing extensions (15, 16; 25, 26), to the ends of which a belt, which is adapted to be arranged around the patient's body, can be fixed. According to the invention, the pressurizing means is in the form of a spring (12; 22), such as a coil spring (12; 22), the first end of which is connected to the compression plate (13; 23) and the second end of which is operatively connected to a handle (19; 29), which can be operated to adjusting the compression of the spring (12; 22).Type: GrantFiled: December 19, 2002Date of Patent: February 12, 2008Assignee: Radi Medical Systems ABInventors: Dan Åkerfeldt, Lars Tenerz, Per Egnelöv
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Publication number: 20070255144Abstract: The present invention relates to a sensor assembly arranged to be disposed in a body for measuring a physiological variable. A basic idea of the present invention is to provide a sensor and guide wire assembly which communicates with an external unit by an inductive coupling between a first coil provided in the sensor assembly and a second, external coil which is disposed in or connected to the external unit. The external unit is preferably the same unit that is used to numerically or graphically display the physiological variables that are measured with the sensor and guide wire assembly. With the terminology introduced above, it should here be clear that both the signal transfer from the sensor as well as the energy feeding from the external unit to the sensor may be accomplished through the inductive coupling between the first and second coils.Type: ApplicationFiled: June 7, 2005Publication date: November 1, 2007Applicant: Radi Medical Systems ABInventors: Sauli Tulkki, Lars Tenerz
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Patent number: 7285097Abstract: Methods and systems related to sealing punctures in blood vessels (such as following an angio or PTCA procedure) are disclosed. The invention provides a system to sense the location of a distal portion of a member within a body. The system includes an introducer portion having a distal end adapted to be placed within a body and a pressure sensor. The pressure sensor is in fluid communication with the distal end and is adapted to provide a pulsation which can be sensed by an operator when the distal end is placed within a pulsating portion of the body.Type: GrantFiled: March 12, 2004Date of Patent: October 23, 2007Assignee: Radi Medical System ABInventors: Lars Tenerz, Dan Åkerfeldt
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Patent number: 7263894Abstract: The invention relates to a sensor (23) adapted for a sensor and guide wire assembly for intravascular measurements in a living body, wherein the sensor (23) comprises a pressure sensitive part (24) and an electronic part (25), said pressure sensitive part (24) comprising a first chip (26) provided with at least one pressure sensitive device (27) and at least one piezoelectric element (35), and the electronic part (25) comprising a second chip (28) provided with at least one electric circuit, and wherein the pressure sensitive part (24) and electronic part (25) are spatially separated from each other and are electrically connected with at least one electrical lead (29).Type: GrantFiled: February 24, 2005Date of Patent: September 4, 2007Assignee: Radi Medical Systems ABInventor: Lars Tenerz
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Publication number: 20060253049Abstract: The invention provides a method for replacing a first introducer, whose distal end is inside a vessel and whose proximal end is outside the skin of a patient, with a second introducer. The method comprises the steps of inserting a guide rod into the first introducer, removing the first introducer, passing the second introducer over the guide rod, and removing the guide rod. The guide rod to be used according to the method has preferably a flexible distal portion with a blunt distal end and a stiff proximal portion with a tapered proximal end.Type: ApplicationFiled: July 10, 2006Publication date: November 9, 2006Inventors: Per Egnelov, Fredrik Preinitz, Lars Tenerz
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Publication number: 20060207335Abstract: The invention relates to a sensor (23) adapted for a sensor and guide wire assembly for intravascular measurements in a living body, wherein the sensor (23) comprises a pressure sensitive part (24) and an electronic part (25), said pressure sensitive part (24) comprising a first chip (26) provided with at least one pressure sensitive device (27) and at least one piezoelectric element (35), and said electronic part (25) comprising a second chip (28) provided with at least one electric circuit, and wherein said pressure sensitive part (24) and electronic part (25) are spatially separated from each other and are electrically connected with at least one electrical lead (29).Type: ApplicationFiled: February 23, 2006Publication date: September 21, 2006Inventors: Lars Tenerz, Leif Smith
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Publication number: 20060206146Abstract: The invention relates to a medical sealing device (1) for the sealing of a puncture hole in a vessel wall, and comprises an inner member (2), which is adapted to be positioned at an interior surface of the vessel wall, and an outer member (3), which is adapted to be positioned outside the vessel wall, the inner member (2) and the outer member (3) being held together by a retaining member (4), wherein at least one of said inner member (2), outer member (3) and retaining member (4) is made from at least one shape memory polymer.Type: ApplicationFiled: March 11, 2005Publication date: September 14, 2006Inventor: Lars Tenerz
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Patent number: 7094209Abstract: The invention provides a method for replacing a first introducer, whose distal end is inside a vessel and whose proximal end is outside the skin of a patient, with a second introducer. The method comprises the steps of inserting a guide rod into the first introducer, removing the first introducer, passing the second introducer over the guide rod, and removing the guide rod. The guide rod to be used according to the method has preferably a flexible distal portion with a blunt distal end and a stiff proximal portion with a tapered proximal end.Type: GrantFiled: January 14, 2003Date of Patent: August 22, 2006Assignee: Radi Medical Systems ABInventors: Per Egnelöv, Fredrik Preinitz, Lars Tenerz
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Patent number: 7073509Abstract: Methods and systems related to sealing punctures in blood vessels (such as following an angio or PTCA procedure) are disclosed. The position of a distal end of an introducer assembly in tissue is determined using a pressure sensor. The pressure sensor is connected to the proximal end of the introducer assembly. The introducer assembly has a fluid path between its distal end and its proximal end. Measured blood pressure is outputted as an indication of the position of the distal end of the introducer assembly in the tissue. Proper positioning of a seal is confirmed by placing the introducer assembly such that its distal end is in tissue outside a puncture in a blood vessel wall and observing a characteristic of blood at the proximal end of the introducer assembly.Type: GrantFiled: March 12, 2004Date of Patent: July 11, 2006Assignee: Radi Medical Systems ABInventors: Lars Tenerz, Dan Åkerfeldt
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Patent number: 7044916Abstract: Methods and systems related to sealing punctures in blood vessels (such as following an angio or PTCA procedure) are disclosed. The position of a distal end of an introducer assembly in tissue is determined using a pressure sensor. The pressure sensor is connected to the proximal end of the introducer assembly. The introducer assembly has a fluid path between its distal end and its proximal end. Measured blood pressure is outputted as an indication of the position of the distal end of the introducer assembly in the tissue. Proper positioning of a seal is confirmed by placing the introducer assembly such that its distal end is in tissue outside a puncture in a blood vessel wall and observing a characteristic of blood at the proximal end of the introducer assembly.Type: GrantFiled: November 12, 2003Date of Patent: May 16, 2006Assignee: Radi Medical Systems ABInventors: Lars Tenerz, Dan Åkerfeldt
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Patent number: 7021152Abstract: A sensor and guide wire assembly (21) for intravascular measurements of physiological variables in a living body includes a core wire (22; 32) and a sensor element (23; 33). The sensor element (23; 33) includes basically a mounting portion (12; 34), which is mounted to the core wire (22; 32), and a pressure sensitive end portion (25; 35) whose upper side is provided with a pressure sensitive device, such as a membrane (26; 36). A recess (27; 37), which is provided between the mounting portion (24; 34) and the pressure sensitive portion (25; 35), provides the sensor element (23; 33) with an articulated action when the core wire (22; 32) is bent.Type: GrantFiled: July 18, 2003Date of Patent: April 4, 2006Assignee: Radi Medical Systems ABInventor: Lars Tenerz
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Patent number: 7011678Abstract: Expandable stent for insertion into a body passage having a mesh structure of interconnecting portions (6) joined together by joining portions (5). The stent, when inserted into said body passage, is adapted to dissolve into smaller parts, wherein the joining portions dissolve faster than the interconnecting portions. In a preferred embodiment the joining portions are made from a first material and the interconnecting portions are made from a second material different from said first material, wherein the first material dissolves faster than said second material.Type: GrantFiled: December 18, 2002Date of Patent: March 14, 2006Assignee: Radi Medical Systems ABInventors: Lars Tenerz, Pär von Malmborg, Torbjörn Mathisen
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Patent number: 7011636Abstract: The present invention relates to A device for measurements, insertable into a living body, comprising an elongated flexible member (2, 30) with a proximal end and a distal end and a central lumen with an inner wall. The lumen is filled with a core (22) and an insulating material (21) is provided between the core and the inner wall; the core (22) is made of an electrically conductive material and has an essentially constant diameter over its entire length. An electrical sensor (44) is attached to the distal end of the elongated flexible member and is electrically connected (52) to the core (22).Type: GrantFiled: June 14, 2002Date of Patent: March 14, 2006Assignee: Radi Medical Systems ABInventor: Lars Tenerz
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Patent number: 6993974Abstract: A sensor and guide wire assembly (21; 31; 41) for intravascular measurements of physiological variables in a living body includes a core wire (22; 32; 42) and sensor element (23; 33; 43). The sensor element (23; 33; 43) includes basically a mounting base (24; 34; 44) and a pressure sensitive end portion (25; 35; 45) whose upper side is provided with a pressure sensitive device, such as a membrane (26; 36; 46). The mounting base (24; 34; 44) extends downwards from the end opposite to the pressure sensitive end (25; 35; 45), such that, when the sensor element (23; 33; 43) is mounted on the core wire (22; 32; 42), a clearance (27; 37; 47) is formed below the pressure sensitive end (25; 35; 45).Type: GrantFiled: July 2, 2003Date of Patent: February 7, 2006Assignee: Radi Medical Systems ABInventors: Lars Tenerz, Mattias Tullberg
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Publication number: 20050268724Abstract: The invention relates to a sensor (23) adapted for a sensor and guide wire assembly for intravascular measurements in a living body, wherein the sensor (23) comprises a pressure sensitive part (24) and an electronic part (25), said pressure sensitive part (24) comprising a first chip (26) provided with at least one pressure sensitive device (27) and at least one piezoelectric element (35), and said electronic part (25) comprising a second chip (28) provided with at least one electric circuit, and wherein said pressure sensitive part (24) and electronic part (25) are spatially separated from each other and are electrically connected with at least one electrical lead (29).Type: ApplicationFiled: February 24, 2005Publication date: December 8, 2005Inventor: Lars Tenerz
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Patent number: 6926674Abstract: The invention relates to a sensor and guide wire assembly including a pressure sensor having a plurality of terminals, the sensor being mounted in the distal end region of a core wire. It also includes two to four electrodes for conductance measurement, also provided in the distal end region. Two electrodes are electrically insulated from each other.Type: GrantFiled: April 19, 2002Date of Patent: August 9, 2005Assignee: Radi Medical Systems ABInventors: Lars Tenerz, Leif Smith, Ola Hammarström, Lars-Åke Brodin, Håkan Elmqvist, Emil Söderqvist, Camilla Carlsson
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Publication number: 20050169974Abstract: The present invention provides a dissolvable medical sealing device (3, 4; 6, 7; 9) for closing a wound in vessel. A sealing device (3, 4, 6, 7, 9) according to the invention is made of a material that dissolves by means of physical processes, rather than by means of chemical or biological processes. Such a sealing device (3, 4; 6, 7; 9) can be made of polyethylene glycol, polypropylene glycol, copolymers containing ethylene glycol and propylene glycol, polyvinyl alcohol or polyvinyl pyrolidone, or any combinations thereof.Type: ApplicationFiled: April 24, 2003Publication date: August 4, 2005Inventors: Lars Tenerz, Dan Akerfeldt, Torbjorn Mathisen
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Publication number: 20050011272Abstract: The invention relates to a sensor and guide wire assembly (21) for intravascular measurements of physiological variables in a living body, comprising a core wire (22; 32) and sensor element (23; 33). The sensor element (23; 33) according to the invention comprises basically a mounting portion (24; 34), which is mounted to the core wire (22; 32), and a pressure sensitive end portion (25; 35) whose upper side is provided with a pressure sensitive device, such as a membrane (26; 36). A recess (27; 37), which is provided between the mounting portion (24; 34) and the pressure sensitive portion (25; 35), provides the sensor element (23; 33) with an articulated action when the core wire (22; 33) is bent.Type: ApplicationFiled: July 18, 2003Publication date: January 20, 2005Inventor: Lars Tenerz