Patents by Inventor Stig Steen
Stig Steen 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: 10405756Abstract: An examination device for a heart. An afterload device connected to the aorta provides a counter-pressure by an annular space delimited between a rigid cylinder and an elastic tube inserted in the rigid cylinder. The annular space comprises a compressible medium, such as air, nitrogen gas or carbon dioxide and is connected to a reservoir providing a predetermined pressure corresponding to a diastolic pressure. The reservoir is connected to the annular space via a restriction and a back-flow valve. During diastole, the annular space is inflated by the reservoir and provides a diastolic counter pressure for providing coronary flow. During systole, the ejected fluid from the heart ventricle displaces the medium inside the annular space through the restriction to the reservoir, thereby removing energy from the fluid. The compressible medium forms a compliance. Also, there is a preload device comprising a vertical collapsible tube for preload of the atrium.Type: GrantFiled: October 24, 2014Date of Patent: September 10, 2019Assignee: XVIVO PERFUSION ABInventors: Stig Steen, Audrius Paskevicius, Benjamin King
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Patent number: 10357029Abstract: A device for arranging a harvested heart to be stored in an enclosure before transplantation, whereby the heart is connected to a tube for supply of a medical fluid to the heart. A cylindrical insert intended to be arranged in a enclosure for the heart, comprises a fixture for immobilizing the tube in a central position of the insert. The fixture comprises an arm extending from the periphery of the fixture to the center of the fixture; and a jaw device for gripping the tube and maintaining the tube and the organ hanging in the tube in a predetermined height position.Type: GrantFiled: December 29, 2014Date of Patent: July 23, 2019Assignee: VIVOLINE MEDICAL ABInventors: Stig Steen, Audrius Paskevicius, Anna Beyer, Benjamin King
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Patent number: 10271540Abstract: A medical fluid for a harvested organ, tissue or part thereof, for evaluation and/or preservation. The fluid includes cocaine or a stimulating analog thereof; noradrenaline; and/or adrenaline. In addition, the fluid includes an oncotic agent, such as dextran; hormones, such as thyroxin; triiodotyronine; cortisone, insulin; and electrolytes and optionally nutrients in substantially physiological concentrations in a physiologically acceptable medium. In addition, the medical fluid further includes albumin in a concentration not exceeding 5.0%, and an oxygen carrier, such as erythrocytes. Further components may be dopamine; hydrocortisone; methylprednisolone; and a vasopressor agent, such as desmopressin. The cocaine; adrenaline; and noradrenaline are present in concentrations of each about 0.010 ?M to 0.100 ?M, for example in a ratio of 1:1:1.Type: GrantFiled: August 5, 2016Date of Patent: April 30, 2019Assignee: XVIVO PERFUSION ABInventor: Stig Steen
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Patent number: 9596842Abstract: An apparatus intended for evaluation, preservation and perfusion of an organ, such as a lung. The apparatus includes a container with a bottom portion, an insert portion and a lid portion. A pulmonary artery tube is intended to be connected to the lung pulmonary artery and a trachea tube is intended to be connected to the trachea of the lungs and bent tube connects the pulmonary artery tube to a circuit for providing a fluid to the pulmonary artery is provided. The circuit includes a pump, an oxygenator, an optional leukocyte-filter, and a holder for connecting the trachea tube to a source of respiration. There is an oxygenator tube set and a leukocyte-filter tube set. A supporting structure for the container comprises a recess sized for enclosing said container and a display panel. Moreover, there are two handles, which may be unfolded into a position for supporting a sterile cloth.Type: GrantFiled: July 16, 2015Date of Patent: March 21, 2017Assignee: Vivoline Medical ABInventors: Stig Steen, Audrius Paskevicius, Anna Beyer, Morgan Johansson, Benjamin King, Anna Söderlund, Anders Lindsten, Peter Sebelius, Maria Sperlingsson, Joakim Nilsson
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Publication number: 20160354359Abstract: A composition, an infusion solution, a method for treatment, and a kit for intravascular administration for treatment of a brain-dead, heart-beating, respirated, potential organ donor. The composition has noradrenaline and a NET inhibitor for noradrenaline. The NET inhibitor may be cocaine or an analogue thereof or a tricyclic antidepressant. The composition may in addition include adrenaline, hydrocortisone, thyroxin, insulin, triiodotyronine, dopamine, a vasopressor agent, such as desmopressin, and methylprednisolone. The ratio between the NET inhibitor and noradrenaline is about 1:1. The composition may be dissolved in pure water, Ringer's acetate solution or physiological sodium chloride solution. The composition is infused in such an amount as to maintain a mean arterial pressure of about 60 mmHg. The composition may be infused by a pump at a rate of about 1.7 ml/hour decreasing dose-dependent to about 0.4 ml/hour after 24 hours.Type: ApplicationFiled: August 19, 2016Publication date: December 8, 2016Inventor: Stig Steen
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Publication number: 20160338343Abstract: A medical fluid for a harvested organ, tissue or part thereof, for evaluation and/or preservation. The fluid includes cocaine or a stimulating analogue thereof; noradrenaline; and/or adrenaline. In addition, the fluid includes an oncotic agent, such as dextran; hormones, such as thyroxin; triiodotyronine; cortisone, insulin; and electrolytes and optionally nutrients in substantially physiological concentrations in a physiologically acceptable medium. In addition, the medical fluid further includes albumin in a concentration not exceeding 5.0%, and an oxygen carrier, such as erythrocytes. Further components may be dopamine; hydrocortisone; methylprednisolone; and a vasopressor agent, such as desmopressin. The cocaine; adrenaline; and noradrenaline are present in concentrations of each about 0.010 ?M to 0.100 ?M, for example in a ratio of 1:1:1.Type: ApplicationFiled: August 5, 2016Publication date: November 24, 2016Inventor: Stig Steen
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Publication number: 20160324145Abstract: A device for arranging a harvested heart to be stored in an enclosure before transplantation, whereby the heart is connected to a tube for supply of a medical fluid to the heart. A cylindrical insert intended to be arranged in a enclosure for the heart, comprises a fixture for immobilizing the tube in a central position of the insert. The fixture comprises an arm extending from the periphery of the fixture to the center of the fixture; and a jaw device for gripping the tube and maintaining the tube and the organ hanging in the tube in a predetermined height position.Type: ApplicationFiled: December 29, 2014Publication date: November 10, 2016Applicant: VIVOLINE MEDICAL ABInventors: Stig STEEN, Audrius PASKEVICIUS, Anna BEYER, Benjamin KING
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Publication number: 20160309707Abstract: Method and device for treatment of a heart after harvesting and before transplantation. The device comprises a container intended to comprise the heart; a first line for connection to an aorta of the heart; a fluid circuit comprising an oxygenator for oxygenating said fluid and a heater/cooler for regulating the temperature of said fluid; and a pump for perfusion of said fluid through the coronary blood vessels of the heart. The fluid comprises an oncotic agent exerting an oncotic pressure larger than about 30 mmHg and is cardioplegic by comprising a potassium concentration between 15 mM and 30 mM. A control device is arranged for controlling the pump to perform said perfusion intermittently, whereby the perfusion time is less than half of the cycle time. The perfusion is performed at a pressure of at least 15 mmHg and at least 15 mmHg lower than said oncotic pressure.Type: ApplicationFiled: July 6, 2016Publication date: October 27, 2016Inventors: Stig Steen, Audrius Paskevicius
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Publication number: 20160262634Abstract: An examination device for a heart. An afterload device connected to the aorta provides a counterpressure by an annular space delimited between a rigid cylinder and an elastic tube inserted in the rigid cylinder. The annular space comprises a compressible medium, such as air, nitrogen gas or carbon dioxide and is connected to a reservoir providing a predetermined pressure corresponding to a diastolic pressure. The reservoir is connected to the annular space via a restriction and a back-flow valve. During diastole, the annular space is inflated by the reservoir and provides a diastolic counter pressure for providing coronary flow. During systole, the ejected fluid from the heart ventricle displaces the medium inside the annular space through the restriction to the reservoir, thereby removing energy from the fluid. The compressible medium forms a compliance.Type: ApplicationFiled: October 24, 2014Publication date: September 15, 2016Applicant: VIVOLINE MEDICAL ABInventors: Stig STEEN, Audrius PASKEVICIUS, Benjamin KING
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Publication number: 20150342178Abstract: An apparatus intended tor evaluation, preservation and perfusion of an organ, such as a lung. The apparatus includes a container with a bottom portion, an insert portion and a lid portion. A pulmonary artery tube is intended to be connected to the lung pulmonary artery and a trachea tube is intended to be connected to the trachea of the lungs and bent tube connects the pulmonary artery tube to a circuit for providing a fluid to the pulmonary artery is provided. The circuit includes a pump, an oxygenator, an optional leukocyte-filter, and a holder for connecting the trachea tube to a source of respiration. There is an oxygenator tube set and a leukocyte-filter tube set. A supporting structure for the container comprises a recess sized for enclosing said container and a display panel. Moreover, there are two handles, which may be unfolded into a position for supporting a sterile cloth.Type: ApplicationFiled: July 16, 2015Publication date: December 3, 2015Applicant: VIVOLINE MEDICAL ABInventors: Stig STEEN, Audrius Paskevicius, Anna Beyer, Morgan Johansson, Benjamin King, Anna Söderlund, Anders Lindsten, Peter Sebelius, Maria Sperlingsson, Joakim Nilsson
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Patent number: 9084416Abstract: An apparatus intended for evaluation, preservation and perfusion of an organ, such as a lung. The apparatus includes a container with a bottom portion, an insert portion and a lid portion. A pulmonary artery tube is intended to be connected to the lung pulmonary artery and a trachea tube is intended to be connected to the trachea of the lungs and bent tube connects the pulmonary artery tube to a circuit for providing a fluid to the pulmonary artery is provided. The circuit includes a pump, an oxygenator, an optional leukocyte-filter, and a holder for connecting the trachea tube to a source of respiration. There is an oxygenator tube set and a leukocyte-filter tube set. A supporting structure for the container comprises a recess sized for enclosing said container and a display panel. Moreover, there are two handles, which may be unfolded into a position for supporting a sterile cloth.Type: GrantFiled: September 24, 2010Date of Patent: July 21, 2015Assignee: VIVOLINE MEDICAL ABInventors: Stig Steen, Audrius Paskevicius, Anna Beyer, Morgan Johansson, Benjamin King, Anna Soderlund, Anders Lindsten, Peter Sebelius, Maria Sperlingsson, Joakim Nilsson
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Publication number: 20150150240Abstract: An evaluation and preservation solution for human and animal organs, tissues and parts thereof is described, wherein it comprises serum albumin at a concentration of 55-105 g/L, a scavenger and coating compound, preferably dextran compounds and derivatives thereof having essentially the same structure at a concentration of 1-55 g/L weight, and a physiological serum concentration of salts and nutrients in a physiologically acceptable medium.Type: ApplicationFiled: February 9, 2015Publication date: June 4, 2015Inventor: Stig STEEN
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Patent number: 8980541Abstract: An evaluation and preservation solution for human and animal organs, tissues and parts thereof is described, wherein it comprises serum albumin at a concentration of 55-105 g/L, a scavenger and coating compound, preferably dextran compounds and derivatives thereof having essentially the same structure at a concentration of 1-55 g/L weight, and a physiological serum concentration of salts and nutrients in a physiologically acceptable medium.Type: GrantFiled: July 8, 2011Date of Patent: March 17, 2015Assignee: XVIVO Perfusion ABInventor: Stig Steen
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Patent number: 8969323Abstract: The present invention relates to priming solutions used during cardiopulmonary bypass procedures. In particular, the present invention relates to a cardiopulmonary bypass priming solution comprising a balanced salt solution and a combination of oncotic and non-oncotic dextran molecules. The present invention also relates to the use of the priming solution in a cardiopulmonary bypass method, a method of maintaining oncotic pressure in a patient during a cardiopulmonary bypass procedure, and a combination of cardiopulmonary bypass priming solution and cardiopulmonary bypass apparatus.Type: GrantFiled: November 7, 2011Date of Patent: March 3, 2015Assignee: XVIVO Perfusion ABInventor: Stig Steen
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Publication number: 20140255905Abstract: A medical fluid for a harvested organ, tissue or parts thereof, for evaluation and/or preservation. The fluid comprise oncotic agents, comprising albumin, a dextran compound and at least one globulin. The globulin has a concentration, which is larger than physiological concentration thereof. In addition, the fluid comprises hormones, such as thyroxin; triiodotyronine; cortisone, insulin; and electrolytes and optionally nutrients in substantially physiological concentrations in a physiologically acceptable medium. Moreover, the medical fluid comprises an oxygen carrier, such as erythrocytes. Further components may be dopamine; hydrocortisone; methylprednisolone; and a vasopressor agent, such as desmopressin. Moreover, cocaine, adrenalin, and/or noradrenalin, may be present in concentrations of each about 1 nM to 100 nM, for example in a ratio of 1:1:1.Type: ApplicationFiled: October 2, 2012Publication date: September 11, 2014Applicant: VIVOLINE MEDICAL ABInventor: Stig Steen
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Publication number: 20140007961Abstract: An apparatus for enclosing an organ after harvesting and before implantation, having; a vessel enclosing a fluid, a connection tube for connecting a circulation hose to the organ for passing a fluid to the organ by a pump, and a degassing hose extending from the connection tube to the vessel. A pinch valve is arranged in the degassing hose. During a degassing phase, the pinch valve is opened to allow fluid flow from the pump, via the circulation hose to the connection tube and via the degassing hose to the vessel for expelling air entrapped in the fluid flow system. A balloon is arranged to prevent fluid flow via the connection tube to the organ during the degassing phase. A sterility arrangement closes the vessel at the top and may be replaced by further sterility arrangements without compromising the sterility.Type: ApplicationFiled: March 23, 2012Publication date: January 9, 2014Applicant: VIVOLINE MEDICAL ABInventors: Stig Steen, Audrius Paskevicius, Benjamin King
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Publication number: 20130316977Abstract: The present invention relates to priming solutions used during cardiopulmonary bypass procedures. In particular, the present invention relates to a cardiopulmonary bypass priming solution comprising a balanced salt solution and a combination of oncotic and non-oncotic dextran molecules. The present invention also relates to the use of the priming solution in a cardiopulmonary bypass method, a method of maintaining oncotic pressure in a patient during a cardiopulmonary bypass procedure, and a combination of cardiopulmonary bypass priming solution and cardiopulmonary bypass apparatus.Type: ApplicationFiled: November 7, 2011Publication date: November 28, 2013Inventor: Stig Steen
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Patent number: 8408207Abstract: A method and device for providing ventilation gas to a patient during cardiopulmonary resuscitation. The device comprises: a gas source for supplying oxygen to the bronchi of the patient and a switch valve for initiating and terminating the gas supply. The switch valve is operated synchronous with the cardiopulmonary resuscitation cycle so that the switch valve operates with the same cycle as the cardiopulmonary resuscitation cycle but off-set in relation to the cardiopulmonary resuscitation cycle. The gas supply is initiated between 25% and 2% of the cycle time before the start of a compression stroke and is terminated between 2% and 30% of the cycle time after the start of a compression stroke. Alternatively, the gas supply is initiated between 25% and 48% of the cycle time after the termination of a compression stroke and is and terminated between 52% and 80% after the termination of a compression stroke.Type: GrantFiled: February 9, 2009Date of Patent: April 2, 2013Assignee: Igelosa Life Science ABInventors: Stig Steen, Audrius Paskevicius
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Publication number: 20130065218Abstract: A medical fluid for a harvested organ, tissue or parts thereof, for evaluation and/or preservation. The fluid includes cocaine or a stimulating analogue thereof; nor-adrenalin; and/or adrenaline. In addition, the fluid includes an oncotic agent, such as dextran; hormones, such as thyroxin; triiodotyronine; cortisone, insulin; and electrolytes and optionally nutrients in substantially physiological concentrations in a physiologically acceptable medium. In addition, the medical fluid further includes albumin in a concentration not exceeding 5.0%, and an oxygen carrier, such as erythrocytes. Further components may be dopamine; hydrocortisone; methylprednisolone; and a vasopressor agent, such as desmopressin. The cocaine; adrenalin; and noradrenaline are present in concentrations of each about 0.010 ?M to 0.100 ?M, for example in a ratio of 1:1:1.Type: ApplicationFiled: May 13, 2011Publication date: March 14, 2013Applicant: VIVOLINE MEDICAL ABInventor: Stig Steen
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Publication number: 20120183945Abstract: Method and device for treatment of a heart after harvesting and before transplantation. The device includes a container intended to comprise the heart; a first line for connection to an aorta of the heart; a fluid circuit comprising an oxygenator for oxygenating said fluid and a heater/cooler for regulating the temperature of said fluid; and a pump for perfusion of said fluid through the coronary blood vessels of the heart. The fluid includes an oncotic agent exerting an oncotic pressure larger than about 30 mmHg; and is cardioplegic by comprising a potassium concentration, which is between 15 mM and 30 mM. A control device is arranged for controlling the pump to perform said perfusion intermittently, whereby the perfusion time is less than half of the cycle time. The perfusion is performed at a pressure, which is at least 15 mmHg and at least 15 mmHg lower than said oncotic pressure.Type: ApplicationFiled: September 22, 2010Publication date: July 19, 2012Applicant: VIVOLINE MEDICAL ABInventors: Stig Steen, Audrius Paskevicius