Patents by Inventor Ronald J. Solar

Ronald J. Solar 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: 5474537
    Abstract: The invention herein is directed to a dilatation catheter comprising a steering wire, a dilatation balloon encompassing the said steering wire, and a flexible, inflatable catheter shaft concentric to the steering wire and in fluid communication with the balloon.
    Type: Grant
    Filed: March 9, 1995
    Date of Patent: December 12, 1995
    Assignee: Pameda N.V.
    Inventor: Ronald J. Solar
  • Patent number: 5413560
    Abstract: The invention relates to a rapid exchange catheter system comprising a exchange member having proximal and distal ends, the distal end of the rigid shaft being integral with the proximal end of the exchange member, such that said shaft is adapted to advance the exchange member distally to a desired location wherein the exchange member is positioned concentrically to a catheter shaft.
    Type: Grant
    Filed: October 26, 1992
    Date of Patent: May 9, 1995
    Assignee: Pameda N.V.
    Inventor: Ronald J. Solar
  • Patent number: 5413557
    Abstract: This invention relates to a balloon dilatation catheter. The balloon dilatation catheter comprises a first, inflation lumen extending therethrough and having distal and proximal ends, the distal end of the first lumen opening into and being in fluid communication with the interior of an inflatable dilatation balloon having distal and proximal ends, and a second lumen extending coextensively with and exterior to the dilatation balloon.
    Type: Grant
    Filed: August 24, 1993
    Date of Patent: May 9, 1995
    Assignee: Pameda N.V.
    Inventor: Ronald J. Solar
  • Patent number: 5407432
    Abstract: The invention relates to a rapid exchange catheter system comprising a exchange member having proximal and distal ends, the distal end of the rigid shaft being integral with the proximal end of the exchange member, such that said shaft is adapted to advance the exchange member distally to a desired location wherein the exchange member is positioned concentrically to a catheter shaft.
    Type: Grant
    Filed: October 26, 1992
    Date of Patent: April 18, 1995
    Assignee: Pameda N.V.
    Inventor: Ronald J. Solar
  • Patent number: 5403341
    Abstract: A pressure expandable stent device having a first internal diameter and subsequently expandable to a second internal diameter. The stent device comprises an elongate wire member having first and second ends and a multiplicity of radius bends formed at spaced locations formed along the length thereof. Each of the bends forms an angle of approximately 180.degree. so as to define therebetween multiple straight segments of the wire members which are disposed in generally parallel, convoluted relation to one another. The first and second ends of the wire members are positioned in co-axial alignment and fused to one another. The fusing of the first and second ends of the wire member to each other causes the straight segments to assume a cylindrical array about a longitudinal axis which defines an internal flow channel of the first internal diameter therewithin. The stent device is radially expandable to a configuration where the internal flow channel is of the second internal diameter.
    Type: Grant
    Filed: January 24, 1994
    Date of Patent: April 4, 1995
    Inventor: Ronald J. Solar
  • Patent number: 5376074
    Abstract: This invention relates to corporeal catheters. More particularly, this invention relates to an outer exchange catheter system comprising an outer catheter sheath and at least one steerable inner catheter having a control means, said outer catheter sheath extending less than the full length of each said inner catheter and being slidable thereover.
    Type: Grant
    Filed: May 18, 1993
    Date of Patent: December 27, 1994
    Assignee: Medtronic, Inc.
    Inventors: Maurice Buchbinder, Ronald J. Solar
  • Patent number: 5315747
    Abstract: This invention relates to the preparation of a balloon dilatation catheter which comprises blowing a length of double lumen tubing to produce a double lumen catheter piece having distal and proximal ends and having a first lumen and a second lumen; cutting an opening in the second lumen proximal to the distal end of the catheter piece; inserting a pushing wire having distal and proximal ends into the second lumen through the proximal end of the catheter piece until the distal end of the pushing wire extends distally across the opening; inserting a piece of lubricous tubing into the second lumen through the distal end of the catheter piece; sealing the distal end of the first lumen; heating the distal portion of the catheter piece to cause the distal portion of the second lumen to shrink slightly to cause the lubricous tubing to fixedly engage the distal end of the pushing wire, while the first lumen is pressurized; and heating the remainder of the catheter piece to cause the second lumen to shrink around the
    Type: Grant
    Filed: October 30, 1992
    Date of Patent: May 31, 1994
    Assignee: Pameda N.V.
    Inventor: Ronald J. Solar
  • Patent number: 5313967
    Abstract: A torque-transmitting structure such as a guidewire or catheter is formed of a generally flat band or wire twisted so that its longitudinal edge generally forms a helix. This twisted helical portion may be attached to a proximal shaft, and a tip member may be attached to the distal end of the helical portion. In some embodiments, the device is made of a single piece of wire, and in some embodiments, a spring coil may cover the helical portion. Where the device is a fixed wire balloon catheter, the helical portion may be attached to a proximal shaft, and the balloon mounted on the helical twisted wire, a plastic sheath encasing the main shaft and wire up to the balloon for inflation of the balloon. The helical guidewire may also be used in an over-the-wire balloon catheter.
    Type: Grant
    Filed: July 24, 1992
    Date of Patent: May 24, 1994
    Assignee: Medtronic, Inc.
    Inventors: Glen L. Lieber, Ronald J. Solar, Erich H. Wolf, Mauricio L. Fugoso, Jr.
  • Patent number: 5267958
    Abstract: A balloon catheter is disclosed having a catheter body and one or more loops external to the body and spaced from the balloon for insertion of a guidewire. A peelable sheath with a guidewiare lumen can instead be mounted exterior to the catheter body for holding the guidewire. The catheter body may optionally be reinforced with a stylet.
    Type: Grant
    Filed: March 30, 1992
    Date of Patent: December 7, 1993
    Assignee: Medtronic, Inc.
    Inventors: Maurice Buchbinder, Glen Lieber, Ronald J. Solar, Leo R. Roucher, Jr.
  • Patent number: 5125895
    Abstract: This invention relates to steerable catheters. More particularly, this invention relates to steerable catheters comprising a flexible catheter comprising a spring coil body defining a lumen, the spring coil body having a flexible covering thereon; a deflection wire, the distal end of the deflection wire being attached to the distal end of the spring coil body; and control means attached to the proximal end of the catheter, the proximal end of the deflection wire extending through the control means and the control means having a torque means which fixedly engages said deflection wire.
    Type: Grant
    Filed: December 19, 1988
    Date of Patent: June 30, 1992
    Assignee: Medtronic Versaflex, Inc.
    Inventors: Maurice Buchbinder, Ronald J. Solar
  • Patent number: 4976690
    Abstract: An improved vascular catheter for angioplasty providing a variable stiffness lengthwise of the catheter. A relatively stiff shaft portion is provided for transmitting the necessary axial forces for advancing the catheter along a guide wire through a series of sharp bend to the arterial branch for dilatation, and a more flexible waist portion connects from the shaft to the balloon and tip portion. This allows the tip and balloon portions to follow sharply bending turns in the guide wire without the shaft portion tending to push the tip beyond a branch or dislodge the guide wire. A set of such catheters may be provided for a surgical procedure, having varying lengths of the waist portion according to the circumstances of the case. If a sharp turn is encountered that cannot be tracked, the catheter can be withdrawn leaving the guide wire in place, and another catheter of the set having a longer waist portion can be inserted to successfully follow the turn.
    Type: Grant
    Filed: March 22, 1990
    Date of Patent: December 11, 1990
    Assignee: SciMed Life Systems, Inc.
    Inventors: Ronald J. Solar, Jonathan Kagan
  • Patent number: 4976689
    Abstract: This invention relates to corporeal catheters. More particularly, this invention relates to an outer exchange catheter system comprising an outer catheter sheath and at least one inner catheter having a control means, the outer catheter sheath extending less than the full length of each inner catheter and being slidable thereover. This invention also relates to the method of using this outer exchange catheter system.
    Type: Grant
    Filed: November 4, 1988
    Date of Patent: December 11, 1990
    Assignee: Medtronic Versaflex, Inc.
    Inventors: Maurice Buchbinder, Ronald J. Solar
  • Patent number: 4944740
    Abstract: This invention relates to corporeal catheters. More particularly, this invention relates to an outer exchange catheter system comprising an outer catheter sheath and at least one steerable inner catheter having a control means, said outer catheter sheath extending less than the full length of each said inner catheter and being slidable thereover.
    Type: Grant
    Filed: August 18, 1988
    Date of Patent: July 31, 1990
    Assignee: Medtronic Versaflex, Inc.
    Inventors: Maurice Buchbinder, Ronald J. Solar
  • Patent number: 4917666
    Abstract: This invention relates to steerable thru-lumen catheters and a method of using same, especially in the cardiovascular field.
    Type: Grant
    Filed: November 14, 1988
    Date of Patent: April 17, 1990
    Assignee: Medtronic Versaflex, Inc.
    Inventors: Ronald J. Solar, Leo Roucher
  • Patent number: 4815478
    Abstract: The present invention is directed to a steerable guidewire. More specifically, the invention is directed to a guidewire which comprises flexible tubing having proximal and distal ends and inner and outer surfaces, a helically wound flexible spring coil having proximal and distal ends, the proximal end of the spring coil being attached to the flexible tubing and the distal end of the spring coil comprising stretched coils, a deflection wire extending through the flexible tubing and spring coil, the deflection wire having proximal and distal ends, optionally a control wire having proximal and distal ends, the proximal end of the control wire being attached to the spring coil proximal to the stretched coils, and a rounded tip engaging the distal end of the spring coil, the distal end of the deflection wire, and the distal end of the control wire.
    Type: Grant
    Filed: March 31, 1988
    Date of Patent: March 28, 1989
    Assignee: Medtronic Versaflex, Inc.
    Inventors: Maurice Buchbinder, Ronald J. Solar, Leo Roucher
  • Patent number: 4813434
    Abstract: The present invention is directed to a steerable guidewire. More specifically, the invention is directed to a guidewire which comprises flexible tubing having proximal and distal ends and inner and outer surfaces, a helically wound flexible spring coil having proximal and distal ends, the proximal end of the spring coil being attached to the flexible tubing and the distal end of the spring coil comprising stretched coils, a deflection wire extending through the flexible tubing and spring coil, the deflection wire having proximal and distal ends, optionally a control wire having proximal and distal ends, the proximal end of the control wire being attached to the spring coil proximal to the stretched coils, and a rounded tip engaging the distal end of the spring coil, the distal end of the deflection wire, and the distal end of the control wire.
    Type: Grant
    Filed: March 31, 1988
    Date of Patent: March 21, 1989
    Assignee: Medtronic Versaflex, Inc.
    Inventors: Maurice Buchbinder, Ronald J. Solar, Leo Roucher
  • Patent number: 4757827
    Abstract: The present invention is directed to a steerable guidewire. More specifically, the invention is directed to a guidewire which comprises flexible tubing having proximal and distal ends and inner and outer surfaces, a helically wound flexible spring coil having proximal and distal ends, the proximal end of the spring coil being attached to the flexible tubing and the distal end of the spring coil comprising stretched coils, a deflection wire extending through the flexible tubing and spring coil, the deflection wire having proximal and distal ends, optionally a control wire having proximal and distal ends, the proximal end of the control wire being attached to the spring coil proximal to the stretched coils, and a rounded tip engaging the distal end of the spring coil, the distal end of the deflection wire, and the distal end of the control wire.
    Type: Grant
    Filed: February 17, 1987
    Date of Patent: July 19, 1988
    Assignee: Versaflex Delivery Systems Inc.
    Inventors: Maurice Buchbinder, Ronald J. Solar, Leo Roucher
  • Patent number: 4723936
    Abstract: This invention relates to steerable catheters. More particularly, this invention relates to steerable catheters comprising a flexible catheter comprising a spring coil body defining a lumen, the spring coil body having a flexible covering thereon; a deflection wire, the distal end of the deflection wire being attached to the distal end of the spring coil body; and control means attached to the proximal end of the catheter, the proximal end of the deflection wire extending through the control means and the control means having a torque means which fixedly engages said deflection wire.
    Type: Grant
    Filed: July 22, 1986
    Date of Patent: February 9, 1988
    Assignee: Versaflex Delivery Systems Inc.
    Inventors: Maurice Buchbinder, Ronald J. Solar
  • Patent number: 4554929
    Abstract: Guide wire and method for insertion and use of a catheter. The guide wire has a shaft of substantially smaller diameter than the luminal opening, with a flexible coil at one end of the shaft. The guide wire is inserted into the cardiovascular system, and the catheter is advanced along the guide wire to the desired position, with the flexible coil outside the distal end of the catheter. An annular passageway is formed between the shaft and the wall of the luminal opening, and fluids are passed through this passageway while the guide wire is within the catheter. A marker of radio opaque material is provided at the distal end of the guide wire so that the position of the wire can be accurately determined even though the wire itself may be too small to be visible with a fluoroscope.
    Type: Grant
    Filed: July 13, 1983
    Date of Patent: November 26, 1985
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Wilfred J. Samson, Ronald J. Solar
  • Patent number: RE33911
    Abstract: Guide wire and method for insertion and use of a catheter. The guide wire has a shaft of substantially smaller diameter than the luminal opening, with a flexible coil at one end of the shaft. The guide wire is inserted into the cardiovascular system, and the catheter is advanced along the guide wire to the desired position, with the flexible coil outside the distal end of the catheter. An annular passageway is formed between the shaft and the wall of the luminal opening, and fluids are passed through this passageway while the guide wire is within the catheter. A marker of radio opaque material is provided at the distal end of the guide wire so that the position of the wire can be accurately determined even though the wire itself may be too small to be visible with a fluoroscope.
    Type: Grant
    Filed: March 27, 1986
    Date of Patent: May 5, 1992
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Wilfred J. Samson, Ronald J. Solar