Patents by Inventor Silvio Schaffner

Silvio Schaffner 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: 10596303
    Abstract: The present invention relates to a drug-eluting medical device, in particular a balloon for angioplasty catheters with drug elution to prevent the restenosis of the vessel subjected to angioplasty. More particularly, the present invention relates to a catheter balloon completely or partially coated with paclitaxel in hydrated crystalline form or in hydrated solvated crystalline form, having an immediate release and bioavailability of a therapeutically effective amount of paclitaxel at the site of intervention. The balloon can be made of a polyether-polyamide block copolymer, or a polyester amide, or polyamide-12.
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: March 24, 2020
    Assignee: Invatec Technology Center GMBH
    Inventors: Ulrich Speck, Silvio Schaffner, Magdalena Renke-Gluszko
  • Patent number: 10405979
    Abstract: A surgical instrument for treating atrioventricular valve prolapse of the drained human heart, includes a handle for being held by a surgeon, a shaft extending distally from the handle, the shaft having a lumen open to a shaft distal end, a cannulated needle arranged in the shaft; with a distal end of the needle protruding from the shaft distal end at least in one possible needle position. The needle accommodates a first, distal implant equipped for being anchored in a papillary muscle, and a second, proximal implant shaped to hold on to a leaflet of an atrioventricular valve, the first and second implants each including a chord connector portion for connecting the respective implant to an artificial chord. The apparatus further includes a trigger arrangement for releasing the first, distal implant upon a first release actuation and for releasing the second, proximal implant upon a second release actuation.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: September 10, 2019
    Assignees: COREMEDIC AG, UNIVERSITAT BERN
    Inventors: Silvio Schaffner, Louis Weidmann, Rolf Vogel, Stefan Guggisberg, Andreas Mächler, Stijn Vandenberghe, Oliver Wüthrich, Thierry Carrel, Alberto Weber
  • Publication number: 20190175346
    Abstract: An instrument for repairing an atrioventricular heart valve, the instrument including a tubular element having an outer, distal end; a distal implant part arranged in the tubular element; an artificial chord arranged in the tubular element; a proximal implant part arranged in the tubular element; and, an anchor carrier arranged in the tubular element. The distal implant part and the proximal implant part are arranged in the tubular element beside one another, with the distal implant part being closer to the distal end of the tubular element than the proximal implant part The proximal implant part is assembled with the anchor carrier inside the tubular element so that the tubular element prevents the proximal implant part from escaping from the anchor carrier as long as the anchor carrier is within the tubular element.
    Type: Application
    Filed: October 19, 2016
    Publication date: June 13, 2019
    Inventors: Silvio Schaffner, Tobias Aeschlimann, Oliver Wüthrich, Thomas Bauer
  • Publication number: 20190175345
    Abstract: A sutureless implant for replacing damaged natural chordae tedingeae of a human or possibly animal heart, the implant including a distal implant part, a proximal implant part, and an artificial chord. The distal implant part is configured to fit in a lumen of an implant delivery device and includes a self-spreading portion spreading radially outside when the distal implant part is released from the lumen, the self-spreading portion being capable of anchoring the distal implant part in human muscle tissue. The proximal implant part is configured to fit in the lumen of the implant delivery device and comprises a self-spreading portion spreading radially outside when the proximal implant part is released from the lumen, the self-spreading portion being capable of bearing on a tissue portion of leaflet tissue. The distal implant part and the proximal implant part are connected by the chord.
    Type: Application
    Filed: October 19, 2016
    Publication date: June 13, 2019
    Inventors: Silvio Schaffner, Tobias Aeschlimann, Oliver Wüthrich, Thomas Bauer
  • Publication number: 20190015562
    Abstract: The present invention relates to a drug-eluting medical device, in particular a balloon for angioplasty catheters with drug elution to prevent the restenosis of the vessel subjected to angioplasty. More particularly, the present invention relates to a catheter balloon completely or partially coated with paclitaxel in hydrated crystalline form or in hydrated solvated crystalline form, having an immediate release and bioavailability of a therapeutically effective amount of paclitaxel at the site of intervention. The balloon can be made of a polyether-polyamide block copolymer, or a polyester amide, or polyamide-12.
    Type: Application
    Filed: July 23, 2018
    Publication date: January 17, 2019
    Inventors: Ulrich Speck, Silvio Schaffner, Magdalena Renke-Gluszko
  • Publication number: 20180311482
    Abstract: A drug coated balloon (DCB) catheter (4) comprising a connector (8), a shaft (20) extending from a proximal end (24) to a distal end (28) along an axial direction (X-X) and having a guidewire lumen (32) and an inflation lumen (36), the shaft (20) being connected to the connector (8) on said proximal end (24) and provided with an inflatable balloon (48), fluidically connected with said inflation lumen (36) in order to be selectively inflated and/or deflated. Advantageously the balloon (48) is conical and axis-symmetrical around a prevalent extension axis (S-S), wherein the balloon (48) has an increasing diameter (60), moving from a first end (52) to a second end (56), said diameter (60) being measured on a section plane perpendicular to said prevalent extension axis (S-S), wherein an external surface (64) of the balloon (48) is coated with a drug for treating restenosis.
    Type: Application
    Filed: October 30, 2015
    Publication date: November 1, 2018
    Inventor: Silvio SCHAFFNER
  • Publication number: 20180303614
    Abstract: A surgical instrument implementing a leaflet grabbing mechanism by a leaflet grabbing structure, in which the leaflet can be grabbed and clamped between first and second abutment surfaces. The first, proximally facing abutment surface belongs to a swivel-out portion of the leaflet grabbing structure, which includes at least a first arm and a second arm. In a released state, when the leaflet grabbing structure is released from a catheter, the arms are capable of swiveling: the first arm may swivel with respect to a main body to which it is attached, and the second arm may swivel relative to the first arm so that in a leaflet grabbing position the first abutment surface faces proximally. The second arm includes a recess arranged so that a chord extending between a released distal implant part and a proximal implant part can extend therethrough and be released by a lateral relative movement.
    Type: Application
    Filed: October 19, 2016
    Publication date: October 25, 2018
    Inventors: Silvio Schaffner, Tobias Aeschlimann, Oliver Wüthrich, Thomas Bauer
  • Patent number: 10058678
    Abstract: Catheters and methods of making catheters are provided which include a connector with a guide wire channel and an inflation channel, a shaft extending from a proximal end to a distal end and having a guide wire lumen and an inflation lumen, the shaft being connected, at its proximal end, to the connector so that said guidewire lumen and inflation lumen are mechanically and fluidly connected with said guide wire channel and inflation channel respectively. The connection is realized in correspondence to a kink portion. Such catheters may include a protective sheath placed around an external wall of the shaft extending from a first sheath end, axially placed at a first distance from the proximal end of the shaft so as to allow direct contact and fixation between the external wall of the shaft and the internal wall of the kink portion, to a second sheath end.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: August 28, 2018
    Assignees: ACOTEC SCIENTIFIC CO. LTD, SCHAFFNER SILVIO
    Inventor: Silvio Schaffner
  • Patent number: 10029032
    Abstract: The present invention relates to a drug-eluting medical device, in particular a balloon for angioplasty catheters with drug elution to prevent the restenosis of the vessel subjected to angioplasty. More particularly, the present invention relates to a catheter balloon completely or partially coated with paclitaxel in hydrated crystalline form or in hydrated solvated crystalline form, having an immediate release and bioavailability of a therapeutically effective amount of paclitaxel at the site of intervention. The balloon can be made of a polyether-polyamide block copolymer, or a polyester amide, or polyamide-12.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: July 24, 2018
    Assignee: Invatec Technology Center GMBH
    Inventors: Ulrich Speck, Silvio Schaffner, Magdalena Renke-Gluszko
  • Publication number: 20170202669
    Abstract: A surgical instrument for treating atrioventricular valve prolapse of the drained human heart, includes a handle for being held by a surgeon, a shaft extending distally from the handle, the shaft having a lumen open to a shaft distal end, a cannulated needle arranged in the shaft; with a distal end of the needle protruding from the shaft distal end at least in one possible needle position. The needle accommodates a first, distal implant equipped for being anchored in a papillary muscle, and a second, proximal implant shaped to hold on to a leaflet of an atrioventricular valve, the first and second implants each including a chord connector portion for connecting the respective implant to an artificial chord. The apparatus further includes a trigger arrangement for releasing the first, distal implant upon a first release actuation and for releasing the second, proximal implant upon a second release actuation.
    Type: Application
    Filed: July 9, 2015
    Publication date: July 20, 2017
    Inventors: Silvio Schaffner, Louis Weidmann, Rolf Vogel, Stefan Guggisberg, Andreas Mächler, Stijn Vandenberghe, Oliver Wüthrich, Thierry Carrel, Alberto Weber
  • Publication number: 20170173220
    Abstract: The present invention relates to a drug-eluting medical device, in particular a balloon for angioplasty catheters with drug elution to prevent the restenosis of the vessel subjected to angioplasty. More particularly, the present invention relates to a catheter balloon completely or partially coated with paclitaxel in hydrated crystalline form or in hydrated solvated crystalline form, having an immediate release and bioavailability of a therapeutically effective amount of paclitaxel at the site of intervention. The balloon can be made of a polyether-polyamide block copolymer, or a polyester amide, or polyamide-12.
    Type: Application
    Filed: February 23, 2017
    Publication date: June 22, 2017
    Inventors: Ulrich SPECK, Silvio SCHAFFNER, Magdalena RENKE-GLUSZKO
  • Publication number: 20160074633
    Abstract: A drug coated balloon (DCB) catheter (4) has a connector (8), a shaft (20) extending from a proximal end (24) to a distal end (28) along an axial direction (X-X) and has a guidewire lumen (32) and an inflation lumen (36), the shaft being connected to the connector (8) on said proximal end (24), wherein the shaft (20) being provided with an inflatable balloon (48), fluidically connected with said inflation lumen (36) in order to be selectively inflated and/or deflated. Advantageously, the balloon (48) is coated with a drug to be delivered on a target lesion, an external wall (52) of the shaft (20), opposite to said lumens (32,36), is covered with a lubricant, and said guidewire lumen (32) is internally covered with a lubricant.
    Type: Application
    Filed: September 4, 2015
    Publication date: March 17, 2016
    Applicant: Pine Medical Limited
    Inventor: Silvio Schaffner
  • Publication number: 20150190612
    Abstract: Catheters and methods of making catheters are provided which include a connector with a guide wire channel and an inflation channel, a shaft extending from a proximal end to a distal end and having a guide wire lumen and an inflation lumen, the shaft being connected, at its proximal end, to the connector so that said guidewire lumen and inflation lumen are mechanically and fluidly connected with said guide wire channel and inflation channel respectively. The connection is realized in correspondence to a kink portion. Such catheters may include a protective sheath placed around an external wall of the shaft extending from a first sheath end, axially placed at a first distance from the proximal end of the shaft so as to allow direct contact and fixation between the external wall of the shaft and the internal wall of the kink portion, to a second sheath end.
    Type: Application
    Filed: September 13, 2013
    Publication date: July 9, 2015
    Applicants: ACOTEC SCIENTIFIC CO., LTD.
    Inventor: Silvio Schaffner
  • Patent number: 8870940
    Abstract: The present invention relates to an endolumenal prosthesis comprising a tubular body adapted to convert from a contracted condition to an expanded condition. The tubular body develops along a longitudinal axis and comprises: a plurality of coils and at least one bridge. The coils develop along a substantially circumferential direction and the bridge connects two coils. The coils are realized in a persistent material, while the bridge is realized in a bioabsorbable material.
    Type: Grant
    Filed: July 25, 2005
    Date of Patent: October 28, 2014
    Assignee: Medtronic, Inc.
    Inventors: Andrea Venturelli, Silvio Schaffner
  • Patent number: 8778010
    Abstract: An endoluminal prosthesis comprises a tubular body which can be expanded about a longitudinal axis. A plurality of serpentines extend in a substantially circumferential direction. Each comprises arm portions and bend portions which join two subsequent arms. The bends facing an adjacent serpentine are circumferentially offset relative to the respective opposite bends of the contiguous serpentine, both when the prosthesis is collapsed and when the prosthesis is expanded. A first portion comprises at least two adjacent serpentines interconnected by at least one bridge, and at least two bends situated at the shortest longitudinal distance between the two serpentines is not connected by a bridge. A second portion comprises at least two adjacent serpentines interconnected by a number of bridges equal to the number of pairs of bends of the two serpentines, at the shortest longitudinal distance between the two serpentines.
    Type: Grant
    Filed: February 17, 2006
    Date of Patent: July 15, 2014
    Assignee: Medtronic, Inc.
    Inventors: Andrea Venturelli, Silvio Schaffner
  • Publication number: 20110295200
    Abstract: The present invention relates to a drug-eluting medical device, in particular a balloon for angioplasty catheters with drug elution to prevent the restenosis of the vessel subjected to angioplasty. More particularly, the present invention relates to a catheter balloon completely or partially coated with paclitaxel in hydrated crystalline form or in hydrated solvated crystalline form, having an immediate release and bioavailability of a therapeutically effective amount of paclitaxel at the site of intervention. The balloon can be made of a polyether-polyamide block copolymer, or a polyester amide, or polyamide-12.
    Type: Application
    Filed: January 8, 2010
    Publication date: December 1, 2011
    Inventors: Ulrich Speck, Silvio Schaffner, Magdalena Renke-gluszko
  • Publication number: 20100274348
    Abstract: The present invention relates to an assembly (10) comprising at least a first stent (1?) and a second stent (1?). Each stent comprises a proximal section (2), a central section (3), and a distal section (4). The proximal and distal sections provide a radial force which is essentially equal to a half of the radial force which is provided by the central section. Thus, by overlapping the distal section (4?) of the second stent (1?) to the proximal section (2?) of the first stent (1?), the radial force which is provided by the overlapped sections is nearly equal to the radial force which is provided by the central sections (3?, 3?) of the two stents.
    Type: Application
    Filed: December 19, 2007
    Publication date: October 28, 2010
    Applicant: Invatec Technology Center GmbH
    Inventors: Silvio Schaffner, Thomas Bauer
  • Publication number: 20100070024
    Abstract: The present invention regards an endoluminal prosthesis (1) or stent comprising a tubular body (10) adapted to be brought from a contracted condition to an expanded condition. The tubular body extends along a longitudinal axis (X-X) and comprises a plurality of bands (11, 11?), and at least one thread (13, 13?) connected to at least one of the bands (11.a).
    Type: Application
    Filed: March 23, 2007
    Publication date: March 18, 2010
    Applicant: INVATEC TECHNOLOGY CENTER GMBH
    Inventors: Andrea Venturelli, Silvio Schaffner
  • Publication number: 20090069882
    Abstract: An endoluminal prosthesis comprises a tubular body which can be expanded about a longitudinal axis. A plurality of serpentines extend in a substantially circumferential direction. Each comprises arm portions and bend portions which join two subsequent arms. The bends facing an adjacent serpentine are circumferentially offset relative to the respective opposite bends of the contiguous serpentine, both when the prosthesis is collapsed and when the prosthesis is expanded. A first portion comprises at least two adjacent serpentines interconnected by at least one bridge, and at least two bends situated at the shortest longitudinal distance between the two serpentines is not connected by a bridge. A second portion comprises at least two adjacent serpentines interconnected by a number of bridges equal to the number of pairs of bends of the two serpentines, at the shortest longitudinal distance between the two serpentines.
    Type: Application
    Filed: February 17, 2006
    Publication date: March 12, 2009
    Applicant: Invatec S.r.L.
    Inventors: Andrea Venturelli, Silvio Schaffner
  • Publication number: 20080215129
    Abstract: The present invention relates to an endolumenal prosthesis comprising a tubular body adapted to convert from a contracted condition to an expanded condition. The tubular body develops along a longitudinal axis and comprises: a plurality of coils and at least one bridge. The coils develop along a substantially circumferential direction and the bridge connects two coils. The coils are realised in a persistent material, while the bridge is realised in a bioabsorbable material.
    Type: Application
    Filed: July 25, 2005
    Publication date: September 4, 2008
    Applicant: INVATEC S.R.L.
    Inventors: Andrea Venturelli, Silvio Schaffner