Patents by Inventor Bent Ohlenschlaeger
Bent Ohlenschlaeger 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: 10695158Abstract: An implantable medical device such as a filter has a generally conical shape formed by a set of filter legs extending from a free distal end to an apex of the assembly and specifically to a coupling device. A retrieval element such as a hook extends from the hub of. A spacer member is disposed at the hub and is formed of a plurality of curved wire elements. The spacer member has a radius or width smaller than the greatest radius of the filter device, defined by the free ends of the filter legs. The spacer member allows the filter assembly to tilt within a vessel but limits the tilt to a maximum desired or permitted tilt, ensuring that the retrieval device remains spaced from the vessel wall and therefore not subject to tissue ingrowth.Type: GrantFiled: October 6, 2015Date of Patent: June 30, 2020Assignee: COOK MEDICAL TECHNOLOGIES LLCInventors: Jeppe D. Johnsen, Bent Øhlenschlaeger, Christian Dela, Torben Andersen
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Patent number: 9889028Abstract: An implant release mechanism for releasing, for example, a stent (60) is provided with three restraining wires (62) which pass in the space between a wire guide catheter (24) and a pusher sheath or dilator (30) and are arranged substantially equi-angularly threrearound. Each restraining wire (62) holds both the proximal and distal ends of the stent (60), in this case each holding a proportion of the ends of the stent (60). When the restraining wires (62) are pulled they will first unwrap from the proximal end of the stent (60) and will then release the distal end of the stent (60) so as to allow the stent to become fully deployed within the lumen of the patient. The use of common release wires improves deployment of implants and reduces the number and volume of components in the device, thereby allowing it to occupy a smaller volume.Type: GrantFiled: February 26, 2016Date of Patent: February 13, 2018Assignee: Cook Medical Technologies LLCInventors: Erik E. Rasmussen, Bent Ohlenschlaeger
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Patent number: 9855128Abstract: A stent graft (18) for deployment in a curved lumen such as the aortic or thoracic arch (130) comprises a constraining mechanism at its proximal end. A stent (4?) provided at the proximal end of the stent graft (18) includes loops of material (11) that co-operate with restraining wires (42) that extend between a central guide wire carrier (24) and a restraining wire cannula (8). The constraining mechanism acts to maintain the proximal stent (4?) constrained at three points around its circumference at both the proximal and distal ends of the proximal stent (4?). The proximal stent (4?) is thus allowed to expand after expansion of the remainder of the stent graft (18) during deployment. In an embodiment, the constraining mechanism acts to constrain two adjacent struts of the proximal stent (4?) at three points radially therearound, at the proximal end of the stent (4?) and at the distal end of the stent (4?).Type: GrantFiled: October 30, 2009Date of Patent: January 2, 2018Assignee: Cook Medical Technologies LLCInventors: Tilo Kölbel, Erik E. Rasmussen, Bent Øhlenschlaeger, Kim Moegelvang Jensen
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Publication number: 20160175129Abstract: An implant release mechanism for releasing, for example, a stent (60) is provided with three restraining wires (62) which pass in the space between a wire guide catheter (24) and a pusher sheath or dilator (30) and are arranged substantially equi-angularly threrearound. Each restraining wire (62) holds both the proximal and distal ends of the stent (60), in this case each holding a proportion of the ends of the stent (60). When the restraining wires (62) are pulled they will first unwrap from the proximal end of the stent (60) and will then release the distal end of the stent (60) so as to allow the stent to become fully deployed within the lumen of the patient. The use of common release wires improves deployment of implants and reduces the number and volume of components in the device, thereby allowing it to occupy a smaller volume.Type: ApplicationFiled: February 26, 2016Publication date: June 23, 2016Applicant: COOK MEDICAL TECHNOLOGIES LLCInventors: Erik E. Rasmussen, Bent Ohlenschlaeger
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Publication number: 20160095688Abstract: An implantable medical device such as a filter has a generally conical shape formed by a set of filter legs extending from a free distal end to an apex of the assembly and specifically to a coupling device. A retrieval element such as a hook extends from the hub of. A spacer member is disposed at the hub and is formed of a plurality of curved wire elements. The spacer member has a radius or width smaller than the greatest radius of the filter device, defined by the free ends of the filter legs. The spacer member allows the filter assembly to tilt within a vessel but limits the tilt to a maximum desired or permitted tilt, ensuring that the retrieval device remains spaced from the vessel wall and therefore not subject to tissue ingrowth.Type: ApplicationFiled: October 6, 2015Publication date: April 7, 2016Inventors: Jeppe D. Johnsen, Bent Øhlenschlaeger, Christian Dela, Torben Andersen
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Patent number: 9278017Abstract: An implant release mechanism for releasing, for example, a stent (60) is provided with three restraining wires (62) which pass in the space between a wire guide catheter (24) and a pusher sheath or dilator (30) and are arranged substantially equi-angularly threrearound. Each restraining wire (62) holds both the proximal and distal ends of the stent (60), in this case each holding a proportion of the ends of the stent (60). When the restraining wires (62) are pulled they will first unwrap from the proximal end of the stent (60) and will then release the distal end of the stent (60) so as to allow the stent to become fully deployed within the lumen of the patient. The use of common release wires improves deployment of implants and reduces the number and volume of components in the device, thereby allowing it to occupy a smaller volume.Type: GrantFiled: November 30, 2007Date of Patent: March 8, 2016Assignee: Cook Medical Technologies LLCInventors: Erik E. Rasmussen, Bent Øhlenschlaeger
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Patent number: 9161850Abstract: An introducer assembly for introducing a stent-graft or other device into a vessel of a patient is provided with a dilator tip which is naturally curved, preferably to be substantially a U-shape. The dilator tip is flexible so as to be able to become substantially straight with a guide wire therein and yet to be able to curve back towards its natural curvature during deployment of an implant. The curvature of the dilator tip can ensure that the dilator tip does not cause damage to the vessel wall during deployment of an implant carried thereon, as can occur with straight dilator tips.Type: GrantFiled: January 18, 2011Date of Patent: October 20, 2015Assignee: Cook Medical Technologies LLCInventors: Erik E. Rasmussen, Bent Ohlenschlaeger, William K. Dierking, Blayne A. Roeder, David E. Orr
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Patent number: 8740969Abstract: A fitting device (104) for fitting a stent-graft (100) into a lumen of a patient includes a catheter (110), a cannula (112) reciprocably carried in the catheter (110) and a pair of gripper claws (106) in the cannula (112). The gripper claws (106) grip onto a stent (102) at the proximal end (128) of the stent-graft (100) which a suture loop (108) is tied to a stent (102) at an intermediate position along the stent graft (100). The stent-graft (100) can be curved by pulling the end-most stent (102) backwards, that is by retracting the cannula (112) into the catheter (110) while the gripper claws (106) grip onto the stent (102). The proximal end of the stent-graft (100) can also be adjusted position-wise by moving the cannula (112) into and out of the catheter (110). Thus, precise positioning and curving of the stent-graft (100) can be achieved.Type: GrantFiled: February 13, 2009Date of Patent: June 3, 2014Assignee: Cook Medical Technologies LLCInventors: Kim Moegelvang Jensen, Bent Øhlenschlaeger
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Patent number: 8603071Abstract: There is disclosed a locking unit (100) for locking a pusher (128) to a sheath assembly (164). The locking unit (100) includes a longitudinal locking portion (102) and a radial locking portion (104). The longitudinal locking portion (102) includes a plurality of cantilevered fingers (110) provided with longitudinally extending teeth (112) on internal surfaces thereof. A nut (108) can be tightened in order to bias the cantilevered arms (110) towards a pusher (128) such that the teeth (112) indent the outer surface of the pusher (128) to produce a strong and stable locking connection thereto. The radial locking section (104) latches onto the assembly integral with the sheath (164) so as to provide a radial locking action as well as a longitudinal locking action. The locking unit (100) provides a strong and reliable locking action between the pusher (128) and the sheath assembly (164) and can be easily removed by a clinician or surgeon during the deployment process.Type: GrantFiled: April 11, 2008Date of Patent: December 10, 2013Assignee: Cook Medical Technologies LLCInventors: Lars S. Nimgaard, Bent Ohlenschlaeger, Erik E. Rasmussen
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Patent number: 8480725Abstract: An introducer (10) includes release wires (42?) that constrain at least one stent (4?) while the remainder of a stent graft (18) is expanded during deployment. By allowing the constrained stent (4?) to expand after an adjacent stent (4), the constrained stent (4?) overlaps with the interior of the adjacent stent (4) where the stent graft (18) is deployed within a curved body lumen (70).Type: GrantFiled: October 30, 2009Date of Patent: July 9, 2013Assignee: Cook Medical Technologies LLCInventors: Erik Rasmussen, Bent Øhlenschlaeger, Kim Moegelvang Jensen
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Patent number: 8394135Abstract: An introducer assembly for introducing a stent-graft (70) or other device into a vessel of a patient includes a pre-shaped curved cannula (60) made preferably of a shape memory material. The curved cannula can pull the proximal end (74) of the stent-graft (70) against the inner side wall of the vessel thereby to ensure a good leak free connection at this point. The assembly is particularly useful in deploying stent-grafts into the aortic arch.Type: GrantFiled: February 11, 2009Date of Patent: March 12, 2013Assignee: Cook Medical Technologies LLCInventors: Kim Moegelvang Jensen, Bent Øhlenschlaeger, Erik E. Rasmussen
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Patent number: 8043356Abstract: A stent-graft (100) is provided with a tightenable loop element (104) having a first end terminated in a slip knot or self-tightening knot (112) and a second end which is received in and can slide in the knot (112). The knot (112) is tied by a suture to the stent-graft (100) so as to be fixed thereto. The loop (104) is fitted to the stent-graft (100) in a manner as to pass between the inside to the outside of the graft material and in such a manner that controlled curvature of the stent-graft (100) is possible, in particular control of the overlapping of adjacent stents held within the zone of the loop (104). An introducer assembly is also disclosed which includes a control cannula (120) able to the fixed to the stent-graft (100) during the deployment procedure, as well as a mechanism of suture loops (150, 152) at the proximal end of the stent-graft (100) for retaining this in a constricted form during the process of curving the latter during the deployment process.Type: GrantFiled: April 3, 2009Date of Patent: October 25, 2011Assignee: Cook Medical Technologies LLCInventors: Tilo Kölbel, Martin Malina, Kim Moegelvang Jensen, Bent Øhlenschlaeger, Erik E. Rasmussen
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Publication number: 20110137403Abstract: An introducer assembly for introducing a stent-graft or other device into a vessel of a patient is provided with a dilator tip which is naturally curved, preferably to be substantially a U-shape. The dilator tip is flexible so as to be able to become substantially straight with a guide wire therein and yet to be able to curve back towards its natural curvature during deployment of an implant. The curvature of the dilator tip can ensure that the dilator tip does not cause damage to the vessel wall during deployment of an implant carried thereon, as can occur with straight dilator tips.Type: ApplicationFiled: January 18, 2011Publication date: June 9, 2011Inventors: Erick E. Rasmussen, Bent Ohlenschlaeger, William K. Dierking, Blayne A. Roeder, David E. Orr
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Publication number: 20100114291Abstract: A stent graft (18) for deployment in a curved lumen such as the aortic or thoracic arch (130) comprises a constraining mechanism at its proximal end. A stent (4?) provided at the proximal end of the stent graft (18) includes loops of material (11) that co-operate with restraining wires (42) that extend between a central guide wire carrier (24) and a restraining wire cannula (8). The constraining mechanism acts to maintain the proximal stent (4?) constrained at three points around its circumference at both the proximal and distal ends of the proximal stent (4?). The proximal stent (4?) is thus allowed to expand after expansion of the remainder of the stent graft (18) during deployment. In an embodiment, the constraining mechanism acts to constrain two adjacent struts of the proximal stent (4?) at three points radially therearound, at the proximal end of the stent (4?) and at the distal end of the stent (4?).Type: ApplicationFiled: October 30, 2009Publication date: May 6, 2010Applicants: William Cook Europe ApS, Cook IncorporatedInventors: Tilo Kölbel, Erik E. Rasmussen, Bent Øhlenschlaeger, Kim Moegelvang Jensen
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Publication number: 20100114290Abstract: An introducer (10) includes release wires (42?) that constrain at least one stent (4?) whilst the remainder of a stent graft (18) is expanded during deployment. By allowing the constrained stent (4?) to expand after an adjacent stent (4), the constrained stent (4?) overlaps with the interior of the adjacent stent (4) where the stent graft (18) is deployed within a curved body lumen (70).Type: ApplicationFiled: October 30, 2009Publication date: May 6, 2010Applicants: William Cook Europe ApS, Cook IncorporatedInventors: Erik E. Rasmussen, Bent Øhlenschlaeger, Kim Moegelvang Jensen
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Patent number: 7666219Abstract: An introducer for an expandable endovascular prosthesis having a self a self-expanding stent includes a proximal prosthesis positioning mechanism that has a retention device to retain the self-expanding stent and a control member to selectively release the retention device from the prosthesis. The retention device includes an opening forming a tapered cavity. The control member includes a plurality of loops coupled to the prosthesis and a trigger wire. The trigger wire passes through a first aperture of the retention device, through the plurality of loops, and through and a second aperture of the retention device to retain the loops.Type: GrantFiled: October 12, 2004Date of Patent: February 23, 2010Assignee: Cook IncorporatedInventors: Erik E. Rasmussen, Jens Vejby Schultz, Bent Øhlenschlaeger
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Publication number: 20090259291Abstract: A stent-graft (100) is provided with a tightenable loop element (104) having a first end terminated in a slip knot or self-tightening knot (112) and a second end which is received in and can slide in the knot (112). The knot (112) is tied by a suture to the stent-graft (100) so as to be fixed thereto. The loop (104) is fitted to the stent-graft (100) in a manner as to pass between the inside to the outside of the graft material and in such a manner that controlled curvature of the stent-graft (100) is possible, in particular control of the overlapping of adjacent stents held within the zone of the loop (104). An introducer assembly is also disclosed which includes a control cannula (120) able to the fixed to the stent-graft (100) during the deployment procedure, as well as a mechanism of suture loops (150, 152) at the proximal end of the stent-graft (100) for retaining this in a constricted form during the process of curving the latter during the deployment process.Type: ApplicationFiled: April 3, 2009Publication date: October 15, 2009Applicants: William Cook Europe ApS, Cook IncorporatedInventors: Tilo Kolbel, Martin Malina, Kim Moegelvang Jensen, Bent Ohlenschlaeger, Erik E. Rasmussen
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Publication number: 20090204198Abstract: An introducer assembly for introducing a stent-graft (70) or other device into a vessel of a patient includes a pre-shaped curved cannula (60) made preferably of a shape memory material. The curved cannula can pull the proximal end (74) of the stent-graft (70) against the inner side wall of the vessel thereby to ensure a good leak free connection at this point. The assembly is particularly useful in deploying stent-grafts into the aortic arch.Type: ApplicationFiled: February 11, 2009Publication date: August 13, 2009Applicants: William Cook Europe, ApS, Cook IncorporatedInventors: Kim Moegelvang Jensen, Bent Ohlenschlaeger, Erik K. Rasmussen
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Publication number: 20090204199Abstract: A fitting device (104) for fitting a stent-graft (100) into a lumen of a patient includes a catheter (110), a cannula (112) reciprocably carried in the catheter (110) and a pair of gripper claws (106) in the cannula (112). The gripper claws (106) grip onto a stent (102) at the proximal end (128) of the stent-graft (100) which a suture loop (108) is tied to a stent (102) at an intermediate position along the stent graft (100). The stent-graft (100) can be curved by pulling the end-most stent (102) backwards, that is by retracting the cannula (112) into the catheter (110) while the gripper claws (106) grip onto the stent (102). The proximal end of the stent-graft (100) can also be adjusted position-wise by moving the cannula (112) into and out of the catheter (110). Thus, precise positioning and curving of the stent-graft (100) can be achieved.Type: ApplicationFiled: February 13, 2009Publication date: August 13, 2009Applicants: William Cook Europe, ApS, Cook IncorporatedInventors: Kim Moegelvang Jensen, Bent Ohlenschlaeger
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Publication number: 20080255542Abstract: There is disclosed a locking unit (100) for locking a pusher (128) to a sheath assembly (164). The locking unit (100) includes a longitudinal locking portion (102) and a radial locking portion (104). The longitudinal locking portion (102) includes a plurality of cantilevered fingers (110) provided with longitudinally extending teeth (112) on internal surfaces thereof. A nut (108) can be tightened in order to bias the cantilevered arms (110) towards a pusher (128) such that the teeth (112) indent the outer surface of the pusher (128) to produce a strong and stable locking connection thereto. The radial locking section (104) latches onto the assembly integral with the sheath (164) so as to provide a radial locking action as well as a longitudinal locking action. The locking unit (100) provides a strong and reliable locking action between the pusher (128) and the sheath assembly (164) and can be easily removed by a clinician or surgeon during the deployment process.Type: ApplicationFiled: April 11, 2008Publication date: October 16, 2008Applicant: William Cook Europe ApSInventors: Lars S. Nimgaard, Bent Ohlenschlaeger, Erik E. Rasmussen