Patents by Inventor Lex P. Jansen
Lex P. Jansen 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: 6960215Abstract: Devices and methods for the controlled delivery of therapeutic agents into bone and soft tissue to prevent the unintentional migration of therapeutic agents from the treatment site. The containment device can be made of a fabric or membrane that is porous, semi-porous, non-porous, bio-resorbable, or non-resorbable materials. A containment device is advanced to the interior of the target structure and filled with a therapeutic agent. The containment device may be permanently or temporarily implanted. Where permanent implantation is desired, the containment device may be detached via a severable junction.Type: GrantFiled: May 8, 2002Date of Patent: November 1, 2005Assignee: Boston Scientific SciMed, Inc.Inventors: Stanley W. Olson, Jr., Lex P. Jansen, Michael Burns
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Patent number: 6830561Abstract: A device for accessing the spinal canal of a patient includes an introducer and a protective sleeve that is attached at one end thereof to a proximal end of the introducer. The protective sleeve has an outer stationary portion and an inner moveable portion. The outer and inner portions of the protective sleeve are separated by a crown region. A catheter is disposed inside the protective sleeve. During operation, the protective sleeve is advanced within the spinal canal to form a protective barrier between the catheter and the spinal cord. The catheter is advanced and retracted within the protective sleeve.Type: GrantFiled: May 8, 2002Date of Patent: December 14, 2004Assignee: SciMed Life Systems, Inc.Inventors: Lex P. Jansen, Stanley W. Olson, Jr., Robert M. Abrams
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Publication number: 20040249382Abstract: Devices and methods for the controlled delivery of therapeutic agents into bone and soft tissue to prevent the unintentional migration of therapeutic agents from the treatment site. The containment device can be made of a fabric or membrane that is porous, semi-porous, non-porous, bio-resorbable, or non-resorbable materials. A containment device is advanced to the interior of the target structure and filled with a therapeutic agent. The containment device may be permanently or temporarily implanted. Where permanent implantation is desired, the containment device may be detached via a severable junction.Type: ApplicationFiled: June 30, 2004Publication date: December 9, 2004Applicant: Scimed Life Systems, Inc.Inventors: Stanley W. Olson, Lex P. Jansen, Michael Burns
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Publication number: 20040167532Abstract: Cannulas are provided for delivering therapeutic material to a treatment site. The cannula includes a cannula body with a plurality of openings at the distal end, including a longitudinal opening and a plurality of transverse openings that are axially spaced from each other. The cannula also includes a plunger that is configured to be slidably disposed within the cannula lumen. When the plunger is proximally displaced in the cannula lumen, the plunger seals the distal end and deflects the therapeutic material out the transverse openings. As the plunger is proximally displaced within the lumen, the therapeutic material is forced to perfuse out transverse openings located proximal of the plunger position. In one embodiment, the plunger includes an additional pliable sealable member. In another embodiment, the distal end of the cannula body may be implanted by separating the distal end from the cannula body.Type: ApplicationFiled: February 24, 2004Publication date: August 26, 2004Applicant: Scimed Life Systems, Inc.Inventors: Stanley W. Olson, Lex P. Jansen, Michael Burns
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Publication number: 20040098111Abstract: An implantable coil stent comprises at least a first curved segment and a second curved segment which arc about the longitudinal axis of the stent. An expandable link extends between the second end of the first curved segment and the first end of the second curved segment.Type: ApplicationFiled: July 1, 2003Publication date: May 20, 2004Applicant: SCIMED LIFE SYSTEMS, INC.Inventors: Joseph C. Eder, Lex P. Jansen
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Patent number: 6730095Abstract: Cannulas are provided for delivering therapeutic material to a treatment site. The cannula includes a cannula body with a plurality of openings at the distal end, including a longitudinal opening and a plurality of transverse openings that are axially spaced from each other. The cannula also includes a plunger that is configured to be slidably disposed within the cannula lumen. When the plunger is proximally displaced in the cannula lumen, the plunger seals the distal end and deflects the therapeutic material out the transverse openings. As the plunger is proximally displaced within the lumen, the therapeutic material is forced to perfuse out transverse openings located proximal of the plunger position. In one embodiment, the plunger includes an additional pliable sealable member. In another embodiment, the distal end of the cannula body may be implanted by separating the distal end from the cannula body.Type: GrantFiled: June 26, 2002Date of Patent: May 4, 2004Assignee: SciMed Life Systems, Inc.Inventors: Stanley W. Olson, Jr., Lex P. Jansen, Michael Burns
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Publication number: 20040024410Abstract: Apparatus for delivering a media to an anatomic void within a bone structure and compacting the media within the anatomic void includes a delivery device and a compaction device. The delivery device includes a tubular element, a guidewire, and a removal element. The removal element is capable of forming a void at a target site within the bone structure by cutting and/or deforming target bone tissue. A distal end of the guidewire may be detachable as a safety feature. The compaction device includes an elongate member and a vibration device connected to the proximal end of the elongate member. The vibration device creates vibration at the distal end of the elongate member, so that the media is mixed and/or compacted within the anatomic void.Type: ApplicationFiled: August 2, 2002Publication date: February 5, 2004Applicant: SCIMED Life Systems, Inc.Inventors: Stanley W. Olson, Lex P. Jansen, Michael Burns
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Publication number: 20040002713Abstract: Cannulas are provided for delivering therapeutic material to a treatment site. The cannula includes a cannula body with a plurality of openings at the distal end, including a longitudinal opening and a plurality of transverse openings that are axially spaced from each other. The cannula also includes a plunger that is configured to be slidably disposed within the cannula lumen. When the plunger is proximally displaced in the cannula lumen, the plunger seals the distal end and deflects the therapeutic material out the transverse openings. As the plunger is proximally displaced within the lumen, the therapeutic material is forced to perfuse out transverse openings located proximal of the plunger position. In one embodiment, the plunger includes an additional pliable sealable member. In another embodiment, the distal end of the cannula body may be implanted by separating the distal end from the cannula body.Type: ApplicationFiled: June 26, 2002Publication date: January 1, 2004Inventors: Stanley W. Olson, Lex P. Jansen, Michael Burns
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Publication number: 20030212411Abstract: A device for accessing the spinal canal of a patient includes an introducer and a protective sleeve that is attached at one end thereof to a proximal end of the introducer. The protective sleeve has an outer stationary portion and an inner moveable portion. The outer and inner portions of the protective sleeve are separated by a crown region. A catheter is disposed inside the protective sleeve. During operation, the protective sleeve is advanced within the spinal canal to form a protective barrier between the catheter and the spinal cord. The catheter is advanced and retracted within the protective sleeve.Type: ApplicationFiled: May 8, 2002Publication date: November 13, 2003Applicant: Scimed Life Systems, Inc.Inventors: Lex P. Jansen, Stanley W. Olson, Robert M. Abrams
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Publication number: 20030212426Abstract: Devices and methods for the controlled delivery of therapeutic agents into bone and soft tissue to prevent the unintentional migration of therapeutic agents from the treatment site. The containment device can be made of a fabric or membrane that is porous, semi-porous, non-porous, bio-resorbable, or non-resorbable materials. A containment device is advanced to the interior of the target structure and filled with a therapeutic agent. The containment device may be permanently or temporarily implanted. Where permanent implantation is desired, the containment device may be detached via a severable junction.Type: ApplicationFiled: May 8, 2002Publication date: November 13, 2003Inventors: Stanley W. Olson,, Lex P. Jansen, Michael Burns
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Publication number: 20030199965Abstract: Stent and stent delivery system suited for the noninvasive treatment of aneurysms, diseased blood vessels, and other bodily lumen are described. Detachable proximal and/or distal wires connected to the proximal and distal ends, respectively, of the stent allow the operator to manipulate the position and final configuration of the stent upon deployment.Type: ApplicationFiled: April 25, 2003Publication date: October 23, 2003Inventors: Lex P. Jansen, Henry Nita, John E. Ortiz
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Publication number: 20030181972Abstract: A medical implant for implantation in a bodily vessel may comprise a tungsten-rhenium (Re) alloy. Another medical implant for implantation in a bodily vessel may comprise molybdenum TZM alloy. Another medical implant may be provided in the form of a stent manufactured from a sheet of metal or from a metal tube, the metal having a modulus of elasticity of 300 GPa or greater.Type: ApplicationFiled: March 22, 2002Publication date: September 25, 2003Applicant: SCIMED LIFE SYSTEMS, INC.Inventors: Lex P. Jansen, Stephen Griffin
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Patent number: 6585753Abstract: An implantable coil stent comprises at least a first curved segment and a curved segment which arc about the longitudinal axis of the stent. An expandable link extends between the second end of the first curved segment and the first end the second curved segment.Type: GrantFiled: March 28, 2001Date of Patent: July 1, 2003Assignee: SciMed Life Systems, Inc.Inventors: Joseph C. Eder, Lex P. Jansen
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Patent number: 6579308Abstract: Stent and stent delivery system suited for the noninvasive treatment of aneurysms, diseased blood vessels, and other bodily lumen are described. Detachable proximal and/or distal wires connected to the proximal and distal ends, respectively, of the stent allow the operator to manipulate the position and final configuration of the stent upon deployment.Type: GrantFiled: November 28, 2000Date of Patent: June 17, 2003Assignee: SciMed Life Systems, Inc.Inventors: Lex P. Jansen, Henry Nita, John E. Ortiz
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Patent number: 6575959Abstract: A catheter for use in vasculature or other lumens within body structures includes a shaft formed from an elongated polymeric flexible tube. A thin polymeric sleeve is placed over a proximal portion of the catheter shaft. A hub structure is injection molded over the sleeve with a polymer of the same type as the polymeric sleeve. The heat from the injection molded polymer of the hub body is sufficient to heat the polymeric sleeve, causing the polymeric sleeve to bond the hub body to the sleeve, and the sleeve to the catheter shaft. In this way, the injection molded polymeric hub structure is fused to the catheter shaft, with a unified polymeric bond, and without the use of adhesive. The plastic sleeve is sufficiently thick to protect the catheter shaft from the heat of the injection molded molten polymer while still allowing the catheter shaft and sleeve to bond to the shaft.Type: GrantFiled: December 27, 1999Date of Patent: June 10, 2003Assignee: SciMed Life Systems, Inc.Inventors: Jeffrey A. Sarge, Lex P. Jansen, Lawrence C. Alpert, Greg P Welsh
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Publication number: 20030105511Abstract: A stent comprising a serpentine portion extending about the circumference of the stent, the serpentine portion having a first end and a second end, the serpentine portion having a plurality of turns at the first end and a plurality of turns at the second end and struts extending therebetween, at least one of the turns at the first end, at least one of the turns at the second end, at least one of the struts therebetween, or some combination thereof having a plurality of shaped recesses thereon.Type: ApplicationFiled: November 30, 2001Publication date: June 5, 2003Inventors: Greg P. Welsh, Lex P. Jansen
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Publication number: 20020151966Abstract: An implantable coil stent comprises at least a first curved segment and a curved segment which arc about the longitudinal axis of the stent. An expandable link extends between the second end of the first curved segment and the first end the second curved segment.Type: ApplicationFiled: March 28, 2001Publication date: October 17, 2002Inventors: Joseph C. Eder, Lex P. Jansen
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Publication number: 20020123738Abstract: A catheter comprising an elongate tubular member having a proximal end, a distal end, and a passageway defining a lumen extending between the proximal and distal ends. The elongate tubular member comprises a relatively stiff proximal section and a relatively flexible distal section. The proximal section includes an inner tubular liner, a first stiffener comprising a metal alloy, and a second stiffener comprising a non-metal alloy. The first and second stiffeners are coaxially wound exterior to the proximal inner liner. The distal section includes a distal inner tubular liner and the second stiffener coaxially wound exterior to the distal inner liner. The first stiffener terminates before reaching the distal section.Type: ApplicationFiled: February 19, 2002Publication date: September 5, 2002Applicant: Target Therapeutics, Inc.Inventors: Lex P. Jansen, Thomas Yung-Hui Chien, Perry Alvin Fukui, Jeffrey A. Sarge, Lawrence Charles Alpert
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Patent number: 6368316Abstract: A catheter comprising an elongate tubular member having a proximal end, a distal end, and a passageway defining a lumen extending between the proximal and distal ends. The elongate tubular member comprises a relatively stiff proximal section and a relatively flexible distal section. The proximal section includes an inner tubular liner, a first stiffener comprising a metal alloy, and a second stiffener comprising a non-metal alloy. The first and second stiffeners are coaxially wound exterior to the proximal inner liner. The distal section includes a distal inner tubular liner and the second stiffener coaxially wound exterior to the distal inner liner. The first stiffener terminates before reaching the distal section.Type: GrantFiled: June 11, 1998Date of Patent: April 9, 2002Assignee: Target Therapeutics, Inc.Inventors: Lex P. Jansen, Thomas Yung-Hui Chien, Perry Alvin Fukui, Jeffrey A. Sarge, Lawrence Charles Alpert
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Patent number: 6165163Abstract: This is a catheter assembly which may be used in accessing a tissue target within the body, typically a target which is accessible through the vascular system. Central to the invention is the use of a braided metallic reinforcing member, typically of a stainless steel or super-elastic alloy ribbon, situated within the catheter body in such a way to create a catheter section having a thin wall, controlled stiffness, and high resistance to kinking. The distal-most section of the catheter is much more flexible than are other braided catheters of the genre due to choice of braid construction features of that distal-most section. The distal-most braid, and optionally, intermediate braid components are constructed to be more flexible than the more proximal sections due to deletion of ribbons from the braid structure, change of ribbon material, and change of pitch. The various sections include braids which may have a consistent pitch or may vary in pitch along the axis of the catheter or catheter section.Type: GrantFiled: March 26, 1999Date of Patent: December 26, 2000Assignee: Target Therapeutics, Inc.Inventors: Thomas Yung-Hui Chien, Lex P. Jansen, Henry Nita, Jeffrey A. Sarge