Patents by Inventor Torbjorn Mathisen

Torbjorn Mathisen 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).

  • Publication number: 20080114395
    Abstract: 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). The sealing device (1) comprises further a haemostatic agent (5), which can be provided at an inner side of the outer member (3) to improve the sealing performance of the sealing device (1).
    Type: Application
    Filed: January 11, 2006
    Publication date: May 15, 2008
    Applicant: RADI MEDICAL SYSTEMS AB
    Inventors: Torbjorn Mathisen, Per Egnelov
  • Publication number: 20070299542
    Abstract: The present invention relates to a resorbable polymeric mesh implant, that is intended to be used in the reconstruction of soft tissue defects. The mesh implant comprises at least a first and a second material, wherein the second material is substantially degraded at a later point in time than the first material following the time of implantation. The mesh implant is adapted to have a predetermined modulus of elasticity that gradually is decreased until the mesh implant is completely degraded and subsequently resorbed. Due to the gradual decrease in the modulus of elasticity of the inventive mesh implant, the regenerating tissue may gradually take over the load applied to the tissue defect area.
    Type: Application
    Filed: June 22, 2006
    Publication date: December 27, 2007
    Inventors: Torbjorn Mathisen, Henrik Magnusson
  • Patent number: 7153492
    Abstract: An effervescent solid composition of matter is provided, which comprises, as an active component, a substance selected from chitosan, its derivatives and salts thereof and a second component capable of releasing CO2 in an acidic environment. Also, methods for treatment of a mammal suffering from a dermal wound, or for prophylactic or wound-healing treatment of lactating animals prone to develop or suffering from mastitis, are provided. The methods comprise the steps of: a) admixing said effervescent solid composition of matter with an aqueous liquid to form a solution or suspension thereof; b) contacting said animals with said solution or suspension to provide such treatment.
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: December 26, 2006
    Assignee: Medicarb AB
    Inventors: Torbjörn Mathisen, Marcus Back, Åsa Hellman
  • Publication number: 20060211839
    Abstract: The present invention relates to a linear polyureaurethane polymer, produced without the use of any chain extender. The hard block of the resulting polymer thus consists of diisocyante groups linked to each other via without the presence of any chain extender component. The hard block of the polyureaurethane material is preferably synthesized by using diisocyante groups in the form of lysine diisocyanate (LDI). The soft block component of the polyureaurethane material is preferably poly(epsilon-caprolactone) (PCL). The invention also relates to a method of producing a polyureaurethane polymer, which in short comprises the steps of reacting a soft block component with a diisocyante group in order to prepare a prepolymer component, combining the prepolymer component with a catalyst in order to define a reaction solution and adding water to the reaction solution, preferably carried to the reaction solution in vapour phase.
    Type: Application
    Filed: February 17, 2006
    Publication date: September 21, 2006
    Inventors: Basse Asplund, Jons Hilborn, Torbjorn Mathisen
  • Publication number: 20060205910
    Abstract: The present invention relates to a linear polyureaurethane polymer, comprising in its hard blocks, at least two urea groups. The hard block of the polyureaurethane material is preferably synthesized by using diisocyante groups in the form of lysine diisocyanate (LDI). The soft block component of the polyureaurethane material is preferably poly(epsilon-caprolactone) (PCL). The invention also relates to a method of producing a polyureaurethane polymer, which in short comprises the steps of reacting a soft block component with a diisocyante group in order to prepare a prepolymer component, combining the prepolymer component with a catalyst in order to define a reaction solution and adding water to the reaction solution, preferably carried to the reaction solution in vapour phase.
    Type: Application
    Filed: March 10, 2005
    Publication date: September 14, 2006
    Inventors: Basse Asplund, Jons Hilborn, Torbjorn Mathisen
  • Publication number: 20060173492
    Abstract: The present invention relates to a sealing device (1; 11; 21; 31) for sealing a puncture in a vessel. The sealing device comprises a sealing element (2; 12; 22; 32) configured to be placed against a wall of the vessel and to seal the puncture in the vessel by contacting the vessel wall, and an elongated member (3; 13; 23; 33) connected to the sealing element and configured to extend in an incision canal leading to the puncture in the vessel. According to the invention, the elongated member, which can be in the form of a suture, filament, multifilament or a flexible stem, comprises a haemostatic material that stops or reduces secondary bleeding in the incision canal.
    Type: Application
    Filed: June 15, 2004
    Publication date: August 3, 2006
    Inventors: Dan Akerfeldt, Torbjorn Mathisen
  • Patent number: 7070858
    Abstract: An absorbable crystalline, monocentric polyaxial copolymer comprising a central carbon or nitrogen atom and at least three axes, each of which includes an amorphous flexible component adjacent and originating from the central atom and a rigid, crystallizable component extending outwardly from the amorphous, flexible component is disclosed along with the use of such copolymer in medical devices which may contain a bioactive agent. The present invention also relates to a suture, stents, stent mantles and sealing devices made from the polyaxial copolymer.
    Type: Grant
    Filed: July 30, 2003
    Date of Patent: July 4, 2006
    Assignee: Poly Med Inc
    Inventors: Shalaby W. Shalaby, Torbjorn Mathisen
  • Publication number: 20060142786
    Abstract: The present invention relates to a resorbable polymeric mesh implant, that is intended to be used in the reconstruction of soft tissue defects. The mesh implant comprises at least a first and a second material, wherein the second material is substantially degraded at a later point in time than the first material following the time of implantation. The mesh implant is adapted to have a predetermined modulus of elasticity that gradually is decreased until the mesh implant is completely degraded and subsequently resorbed. Due to the gradual decrease in the modulus of elasticity of the inventive mesh implant, the regenerating tissue may gradually take over the load applied to the tissue defect area.
    Type: Application
    Filed: December 23, 2004
    Publication date: June 29, 2006
    Inventors: Torbjorn Mathisen, Henrik Magnusson
  • Patent number: 7026437
    Abstract: An absorbable crystalline, monocentric polyaxial copolymer comprising a central carbon or nitrogen atom and at least three axes, each of which includes an amorphous flexible component adjacent and originating from the central atom and a rigid, crystallizable component extending outwardly from the amorphous, flexible component is disclosed along with the use of such copolymer in medical devices which may contain a bioactive agent. The present invention also relates to a suture, stents, stent mantles and sealing devices made from the polyaxial copolymer.
    Type: Grant
    Filed: July 30, 2003
    Date of Patent: April 11, 2006
    Assignee: Poly-Med, INC
    Inventors: Shalaby W. Shalaby, Dan Åkerfeldt, Fredrik Preiniz, Per Egnelöv, Torbjörn Mathisen
  • Patent number: 7011678
    Abstract: 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: Grant
    Filed: December 18, 2002
    Date of Patent: March 14, 2006
    Assignee: Radi Medical Systems AB
    Inventors: Lars Tenerz, Pär von Malmborg, Torbjörn Mathisen
  • Publication number: 20050169974
    Abstract: 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: Application
    Filed: April 24, 2003
    Publication date: August 4, 2005
    Inventors: Lars Tenerz, Dan Akerfeldt, Torbjorn Mathisen
  • Patent number: 6896902
    Abstract: An effervescent solid composition of matter is provided, which comprises, as an active component, a substance selected from chitosan, its derivatives and salts thereof and a second component capable of releasing CO2 in an acidic environment. Also, methods for treatment of a mammal suffering from a dermal wound, or for prophylactic or wound-healing treatment of lactating animals prone to develop or suffering from mastitis, are provided. The methods comprise the steps of: a) admixing said effervescent solid composition of matter with an aqueous liquid to form a solution or suspension thereof; b) contacting said animals with said solution or suspension to provide such treatment.
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: May 24, 2005
    Assignee: MEDICARB AB
    Inventors: Torbjörn Mathisen, Marcus Back, Åsa Hellman
  • Publication number: 20050010279
    Abstract: 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: Application
    Filed: December 18, 2002
    Publication date: January 13, 2005
    Inventors: Lars Tenerz, Par von Malmborg, Torbjorn Mathisen
  • Patent number: 6827727
    Abstract: Following a catheterisation of the artery, the flow of blood through the puncture wound has to be stopped. With the method according to the invention, the time for achieving haemostasis can be reduced by combining the normal clotting mechanism with a chitosan induced clogging mechanism. A compression device (1; 8; 16) for achieving haemostasis in a puncture wound comprises a compressor (2; 9; 17) and a pressure element (3; 10; 18) connected to said compressor (2; 9; 17) so that the bottom side of the pressure element (3; 10; 18) is in contact with the puncture wound, characterized in that the bottom side of the pressure element (3; 10; 18) is provided with chitosan, so that the chitosan and the external compression pressure are applied simultaneously on the puncture wound when the compressor (2; 9; 17) applies an external compression pressure on the puncture wound via the pressure element (3; 10; 18).
    Type: Grant
    Filed: December 18, 2001
    Date of Patent: December 7, 2004
    Assignee: Radi Medical Systems AB
    Inventors: Jan Stålemark, Torbjörn Mathisen
  • Patent number: 6794485
    Abstract: An absorbable crystalline, monocentric polyaxial copolymer comprising a central carbon or nitrogen atom and at least three axes, each of which includes an amorphous flexible component adjacent and originating from the central atom and a rigid, crystallizable component extending outwardly from the amorphous, flexible component is disclosed along with the use of such copolymer in medical devices which may contain a bioactive agent. The present invention also relates to a suture, stents, stent mantles and sealing devices made from the polyaxial copolymer.
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: September 21, 2004
    Assignee: Poly-Med, Inc.
    Inventors: Shalaby W. Shalaby, Torbjorn Mathisen
  • Publication number: 20040127389
    Abstract: An effervescent solid composition of matter is provided, which comprises, as an active component, a substance selected from chitosan, its derivatives and salts thereof and a second component capable of releasing CO2 in an acidic environment. Also, methods for treatment of a mammal suffering from a dermal wound, or for prophylactic or wound-healing treatment of lactating animals prone to develop or suffering from mastitis, are provided. The methods comprise the steps of: a) admixing said effervescent solid composition of matter with an aqueous liquid to form a solution or suspension thereof; b) contacting said animals with said solution or suspension to provide such treatment.
    Type: Application
    Filed: November 25, 2003
    Publication date: July 1, 2004
    Inventors: Torbjorn Mathisen, Marcus Back, Asa Hellman
  • Publication number: 20040116620
    Abstract: An absorbable crystalline, monocentric polyaxial copolymer comprising a central carbon or nitrogen atom and at least three axes, each of which includes an amorphous flexible component adjacent and originating from the central atom and a rigid, crystallizable component extending outwardly from the amorphous, flexible component is disclosed along with the use of such copolymer in medical devices which may contain a bioactive agent. The present invention also relates to a suture, stents, stent mantles and sealing devices made from the polyaxial copolymer.
    Type: Application
    Filed: July 30, 2003
    Publication date: June 17, 2004
    Inventors: Shalaby W. Shalaby, Torbjorn Mathisen
  • Publication number: 20040024169
    Abstract: An absorbable crystalline, monocentric polyaxial copolymer comprising a central carbon or nitrogen atom and at least three axes, each of which includes an amorphous flexible component adjacent and originating from the central atom and a rigid, crystallizable component extending outwardly from the amorphous, flexible component is disclosed along with the use of such copolymer in medical devices which may contain a bioactive agent. The present invention also relates to a suture, stents, stent mantles and sealing devices made from the polyaxial copolymer.
    Type: Application
    Filed: July 30, 2003
    Publication date: February 5, 2004
    Inventors: Shalaby W. Shalaby, Dan Akerfeldt, Fredrik Preiniz, Per Egnelov, Torbjorn Mathisen
  • Publication number: 20030120029
    Abstract: An absorbable crystalline, monocentric polyaxial copolymer comprising a central carbon or nitrogen atom and at least three axes, each of which includes an amorphous flexible component adjacent and originating from the central atom and a rigid, crystallizable component extending outwardly from the amorphous, flexible component is disclosed along with the use of such copolymer in medical devices which may contain a bioactive agent. The present invention also relates to a suture, stents, stent mantles and sealing devices made from the polyaxial copolymer.
    Type: Application
    Filed: October 31, 2002
    Publication date: June 26, 2003
    Inventors: Shalaby W. Shalaby, Torbjorn Mathisen
  • Publication number: 20030114881
    Abstract: Following a catheterisation of the artery, the flow of blood through the puncture wound has to be stopped. With the method according to the invention, the time for achieving haemostasis can be reduced by combining the normal clotting mechanism with a chitosan induced clogging mechanism. A compression device (1; 8; 16) for achieving haemostasis in a puncture wound comprises a compressor (2; 9; 17) and a pressure element (3; 10; 18) connected to said compressor (2; 9; 17) so that the bottom side of the pressure element (3; 10; 18) is in contact with the puncture wound, characterized in that the bottom side of the pressure element (3; 10; 18) is provided with chitosan, so that the chitosan and the external compression pressure are applied simultaneously on the puncture wound when the compressor (2; 9; 17) applies an external compression pressure on the puncture wound via the pressure element (3; 10; 18).
    Type: Application
    Filed: December 18, 2001
    Publication date: June 19, 2003
    Inventors: Jan Stalemark, Torbjorn Mathisen