Patents by Inventor Alwin Schwitzer

Alwin Schwitzer 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).

  • Patent number: 11147945
    Abstract: A catheter shaft includes a first tube made of an extrudable copolymer that has reactive groups, and a second tube made of a polymeric material, which is welded to the first tube. A distal balloon is welded to the first tube.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: October 19, 2021
    Assignee: BIOTRONIK AG
    Inventors: Alwin Schwitzer, Hans Lang
  • Patent number: 10893932
    Abstract: An implant having a preferably hollow cylindrical basic structure. A nonwoven fabric is disposed in and/or on the basic structure, the nonwoven fabric preferably comprising biocompatible thermoplastic polyurethane and/or a polymer selected from the group consisting of polylactic acid, polycaprolactone, and a copolymer thereof, and/or a polymer including polyphosphazene. At least in at least one section of the implant, preferably at the proximal and/or distal ends of the implant, fastening means are provided or the nonwoven fabric is treated such that, at least in the expanded state of the implant, the protrusion of nonwoven fabric sections from the implant is significantly reduced. Furthermore, a method for producing such an implant is provided.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: January 19, 2021
    Assignee: BIOTRONIK AG
    Inventors: Daniel Wintsch, Stefan Loher, Bodo Quint, Patrice Bachmann, Hans Lang, Dragica Pantic, Alwin Schwitzer
  • Publication number: 20190314137
    Abstract: An implant having a preferably hollow cylindrical basic structure. A nonwoven fabric is disposed in and/or on the basic structure, the nonwoven fabric preferably comprising biocompatible thermoplastic polyurethane and/or a polymer selected from the group consisting of polylactic acid, polycaprolactone, and a copolymer thereof, and/or a polymer including polyphosphazene. At least in at least one section of the implant, preferably at the proximal and/or distal ends of the implant, fastening means are provided or the nonwoven fabric is treated such that, at least in the expanded state of the implant, the protrusion of nonwoven fabric sections from the implant is significantly reduced. Furthermore, a method for producing such an implant is provided.
    Type: Application
    Filed: March 19, 2019
    Publication date: October 17, 2019
    Inventors: Daniel Wintsch, Stefan Loher, Bodo Quint, Patrice Bachmann, Hans Lang, Dragica Pantic, Alwin Schwitzer
  • Patent number: 10271941
    Abstract: An implant having a preferably hollow cylindrical basic structure. A nonwoven fabric is disposed in and/or on the basic structure, the nonwoven fabric preferably comprising biocompatible thermoplastic polyurethane and/or a polymer selected from the group consisting of polylactic acid; polycaprolactone, and a copolymer thereof, and/or a polymer including polyphosphazene. At least in at least one section of the implant, preferably at the proximal and/or distal ends of the implant, fastening means are provided or the nonwoven fabric is treated such that, at least in the expanded state of the implant, the protrusion of nonwoven fabric sections from the implant is significantly reduced. Furthermore, a method for producing such an implant is provided.
    Type: Grant
    Filed: April 20, 2011
    Date of Patent: April 30, 2019
    Assignee: BIOTRONIK AG
    Inventors: Daniel Wintsch, Stefan Loher, Bodo Quint, Patrice Bachmann, Hans Lang, Dragica Pantic, Alwin Schwitzer
  • Publication number: 20180304057
    Abstract: A balloon for a balloon catheter has an inflatable, single-layer balloon envelope, which surrounds an interior and is dilatable by filling the interior with a fluid. The balloon envelope consists of polyamide 6.12 or includes or substantially consists of polyamide 6.12.
    Type: Application
    Filed: April 17, 2018
    Publication date: October 25, 2018
    Inventor: Alwin Schwitzer
  • Patent number: 9833547
    Abstract: The invention relates to a drug-coated balloon catheter and to a method for producing the same. The balloon of the catheter includes (i) a main membrane, and (ii) an asymmetrical polymer membrane which is applied to an outside of the main membrane and into which at least one pharmaceutical active ingredient is introduced.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: December 5, 2017
    Assignee: Biotronik VI Patent AG
    Inventors: Michael Tittelbach, Raimund Moehl, Alwin Schwitzer, Matthias Wesselmann, Bodo Quint, Patrice Bachmann
  • Publication number: 20170259032
    Abstract: A catheter shaft includes a first tube made of an extrudable copolymer that has reactive groups, and a second tube made of a polymeric material, which is welded to the first tube. A distal balloon is welded to the first tube.
    Type: Application
    Filed: May 23, 2017
    Publication date: September 14, 2017
    Inventors: Alwin Schwitzer, Hans Lang
  • Patent number: 9682211
    Abstract: One embodiment of the invention relates to a catheter shaft comprising (i) a first tube made of an extrudable copolymer that has reactive groups, and (ii) a second tube made of a polymeric material, which can be welded to the first tube, wherein the polymeric material of the second tube can be welded to the first tube at a temperature ?200° C.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: June 20, 2017
    Assignee: Biotronik AG
    Inventors: Alwin Schwitzer, Hans Lang
  • Patent number: 9352072
    Abstract: Mixtures made of PE and COC, in particular for use in medical materials, so as to reduce the frictional forces. The mixtures comprising or consisting of PE and COC, wherein ?70% by weight, preferably ?90% by weight, and still more preferably 100% by weight, relative to the total mass of PE, of PE in the mixture is HDPE.
    Type: Grant
    Filed: May 16, 2013
    Date of Patent: May 31, 2016
    Assignee: Biotronik AG
    Inventor: Alwin Schwitzer
  • Publication number: 20160144077
    Abstract: The invention relates to a drug-coated balloon catheter and to a method for producing the same. The balloon of the catheter includes (i) a main membrane, and (ii) an asymmetrical polymer membrane which is applied to an outside of the main membrane and into which at least one pharmaceutical active ingredient is introduced.
    Type: Application
    Filed: January 28, 2016
    Publication date: May 26, 2016
    Inventors: Michael Tittelbach, Raimund Moehl, Alwin Schwitzer, Matthias Wesselmann, Bodo Quint, Patrice Bachmann
  • Publication number: 20150367036
    Abstract: A method for manufacturing a balloon catheter forms a balloon from a mixture of at least one polymer and the least one crosslinking agent, and irradiating the formed balloon with UV light. The balloon catheter is particularly usable for introduction into a body vessel. A preferred balloon includes a mixture of at least one polymer and at least one crosslinking agent, polymer chains of the at least one polymer being connected by the at least one crosslinking agent. The at least one cross-linking agent is responsive to be activated by irradiation with UV light.
    Type: Application
    Filed: April 29, 2015
    Publication date: December 24, 2015
    Inventors: Alwin Schwitzer, Matthias Wesselmann, Bodo Quint
  • Publication number: 20150112026
    Abstract: The invention relates to certain mixtures made of PE and COC, in particular for use in medical materials, so as to reduce the frictional forces.
    Type: Application
    Filed: May 16, 2013
    Publication date: April 23, 2015
    Inventor: Alwin Schwitzer
  • Publication number: 20130338677
    Abstract: One embodiment of the invention relates to an insertion element which is designed to cooperate with an insertion device for inserting a medical implant into a human or animal body. The insertion element comprises a sleeve which, in the circumferential direction, has at least two types of circumferential segments of different resilience. The invention further includes an embodiment relating to an insertion device for inserting a medical implant into a human or animal body, comprising at least one outer insertion element wherein the outer insertion element is expand able, at least in regions, when ready for use, wherein the outer insertion element comprises a sleeve which, in the circumferential direction, has at least two types of circumferential segments of different resilience.
    Type: Application
    Filed: March 15, 2013
    Publication date: December 19, 2013
    Applicant: Biotronik AG
    Inventors: Alwin Schwitzer, Amir Fargahl
  • Publication number: 20130261604
    Abstract: One embodiment of the invention relates to a catheter shaft comprising (i) a first tube made of an extrudable copolymer that has reactive groups, and (ii) a second tube made of a polymeric material, which can be welded to the first tube, wherein the polymeric material of the second tube can be welded to the first tube at a temperature ?200° C.
    Type: Application
    Filed: March 7, 2013
    Publication date: October 3, 2013
    Applicant: BIOTRONIK AG
    Inventors: Alwin Schwitzer, Hans Lang
  • Publication number: 20120290082
    Abstract: A mechanical transcatheter heart valve prosthesis including a support structure that can be expanded from a first size designed for minimally invasive insertion to a functional second size and a flexible heart valve made of a composite material containing woven fabric that is embedded in an elastic matrix and locally reinforced by fibers, the heart valve comprising a plurality of leaflets.
    Type: Application
    Filed: April 27, 2012
    Publication date: November 15, 2012
    Applicant: BIOTRONIK AG
    Inventors: Bodo Quint, Matthias Wesselmann, Alwin Schwitzer, Patrice Bachmann, Susanne Pfenninger-Ganz, Hans Lang, Amir Fargahi
  • Publication number: 20120290083
    Abstract: A valve for a heart valve prosthesis comprising a valve membrane composed of at least one spiral strip which, in the closed state of the valve membrane, assumes the form of an Archimedean spiral, wherein the outer edge regions of the spiral strip overlap an inner edge region of the spiral strip of a previous winding of the spiral.
    Type: Application
    Filed: April 26, 2012
    Publication date: November 15, 2012
    Applicant: BIOTRONIK AG
    Inventors: Amir Fargahi, Matthias Wesselmann, Patrice Bachmann, Alwin Schwitzer, Bodo Quint
  • Publication number: 20110262684
    Abstract: An implant having a preferably hollow cylindrical basic structure. A nonwoven fabric is disposed in and/or on the basic structure, the nonwoven fabric preferably comprising biocompatible thermoplastic polyurethane and/or a polymer selected from the group consisting of polylactic acid; polycaprolactone, and a copolymer thereof, and/or a polymer including polyphosphazene. At least in at least one section of the implant, preferably at the proximal and/or distal ends of the implant, fastening means are provided or the nonwoven fabric is treated such that, at least in the expanded state of the implant, the protrusion of nonwoven fabric sections from the implant is significantly reduced. Furthermore, a method for producing such an implant is provided.
    Type: Application
    Filed: April 20, 2011
    Publication date: October 27, 2011
    Applicant: BIOTRONIK AG
    Inventors: Daniel Wintsch, Stefan Loher, Bodo Quint, Patrice Bachmann, Hans Lang, Dragica Pantic, Alwin Schwitzer
  • Publication number: 20100292639
    Abstract: The invention relates to a catheter having a single-layer inner tube, the single-layer inner tube with an inner surface forming a lumen and with an outer surface forming an outer surface of catheter duct, it being possible to arrange one or more guide wires in the lumen of the inner tube, characterized in that the single-layer inner tube is made of a material including: a) 96 to 99.9% by weight of a polymer, a copolymer, and/or a mixture of several polymers and/or copolymers; b) 0 to 1% by weight talc; c) 0 to 1% by weight calcium carbonate; d) 0 to 1% silicon dioxide; e) 0 to 1% by weight waxes; wherein the sum of the weight percentages of constituents b) to e) is at least 0.1% by weight, and no more than 4% by weight, and wherein all weight percentage information relates to the total weight of the single-layer inner tube.
    Type: Application
    Filed: May 5, 2010
    Publication date: November 18, 2010
    Applicant: BIOTRONIK VI PATENT AG
    Inventors: Alwin Schwitzer, Bettina Surber
  • Publication number: 20100286608
    Abstract: The invention relates to a drug-coated balloon catheter and to a method for producing the same. The balloon of the catheter includes (i) a main membrane, and (ii) an asymmetrical polymer membrane which is applied to an outside of the main membrane and into which at least one pharmaceutical active ingredient is introduced.
    Type: Application
    Filed: April 26, 2010
    Publication date: November 11, 2010
    Applicant: BIOTRONIK VI PATENT AG
    Inventors: Michael Tittelbach, Raimund Moehl, Alwin Schwitzer, Matthias Wesselmann, Bodo Quint, Patrice Bachmann
  • Publication number: 20060247363
    Abstract: The invention relates to a novel polyamide molding material for highly lustrous and rigid polyamide molded articles that contains a polyamide mixture consisting of a semicrystalline linear polyamide, a special branched graft polyamide, an amorphous polyamide, reinforcing substances as well as conventional additives.
    Type: Application
    Filed: October 31, 2003
    Publication date: November 2, 2006
    Inventors: Alwin Schwitzer, Manfred Hewel, Eduard Schmid, Ivano Laddona