USRE33911E - Catheter guide wire with short spring tip and method of using the same - Google Patents

Catheter guide wire with short spring tip and method of using the same Download PDF

Info

Publication number
USRE33911E
USRE33911E US06847297 US84729786A USRE33911E US RE33911 E USRE33911 E US RE33911E US 06847297 US06847297 US 06847297 US 84729786 A US84729786 A US 84729786A US RE33911 E USRE33911 E US RE33911E
Authority
US
Grant status
Grant
Patent type
Prior art keywords
shaft
coil
guide wire
iaddend
iadd
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US06847297
Inventor
Wilfred J. Samson
Ronald J. Solar
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Abbott Cardiovascular Systems Inc
Original Assignee
Abbott Cardiovascular Systems Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Grant date

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00Catheters; Hollow probes
    • A61M25/01Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/09Guide wires
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/39Markers, e.g. radio-opaque or breast lesions markers
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00Catheters; Hollow probes
    • A61M25/01Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/09Guide wires
    • A61M2025/09175Guide wires having specific characteristics at the distal tip
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00Catheters; Hollow probes
    • A61M25/01Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/0105Steering means as part of the catheter or advancing means; Markers for positioning
    • A61M25/0108Steering means as part of the catheter or advancing means; Markers for positioning using radio-opaque or ultrasound markers

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.

Description

This invention pertains generally to the insertion of catheters into the cardiovascular system, and more particularly to a guide wire and method for inserting and using a catheter.

Guide wires heretofore utilized in the insertion of catheters into the cardiovascular system have included an elongated wire core surrounded by a helically wrapped outer wire of smaller diameter than the luminal openings of the catheters with which they are employed. With dilation catheters for use in the coronary vessels and catheters of relatively small diameter (e.g., 0.020 inch or less), the guide wire is only slightly smaller than the luminal opening, and the guide wire must be removed before any fluid is passed through the catheter. It has generally not been possible to make the guide wire smaller because it might not have sufficient torsional rigidity to permit it to be steered into the cardiovascular system. In addition, the smaller wire might puncture the wall of the artery or other surrounding tissue.

Another problem which catheters of relatively small diameter is determining the position of the guide wire. Larger guide wires are generally visible with a fluoroscope or other radiographic instrument, but with the smaller catheters, the guide wires may be too small to be seen in this manner.

It is in general an object of the invention to provide a new and improved guide wire and method for the insertion and use of catheters into the cardiovascular system.

Another object of the invention is to provide a guide wire and method of the above character in which the guide wire remains in the catheter while the catheter is in use.

These and other objects are achieved in accordance with the invention by providing a guide wire having an elongated shaft of relatively rigid material and a helical coil at the distal 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 helical coil outside the distal end of the catheter. The shaft of the guide wire is substantially smaller than the luminal opening of the catheter, and fluids are passed through the luminal opening while the guide wire is still in place. 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.

FIG. 1 is a side elevational view of a catheter and a guide wire incorporating the invention.

FIG. 2 is an enlarged fragmentary centerline sectional view of the distal end portion of the guide wire in the embodiment of FIG. 1.

FIG. 3 is a fragmentary elevational view of the tip portion of the guide wire of FIG. 1, illustrating the manner in which the tip can be shaped to facilitate insertion into a given artery.

FIG. 4 is an enlarged, fragmentary centerline sectional view of another embodiment of a guide wire incorporating the invention.

In FIG. 1, the guide wire 11 is illustrated in connection with a catheter 12 having a proximal end 13 and a distal end 14. The catheter comprises an elongated tubular body of relatively flexible material having an axially etending luminal opening or passageway 16, with a connector fitting 17 at the proximal end of the tubular body. The catheter can be of any desired type, for example, a dilation catheter having a inflatable balloon toward the distal end thereof.

Guide wire 11 comprises an elongated, relatively rigid shaft 21 having a proximal end 22 and a distal end 23, with a relatively flexible helical coil or spring 24 extending axially from the distal end of the shaft. The cross-sectional area of the shaft is substantially smaller than the luminal opening of the catheter so that fluids can pass freely between the shaft and the wall of the luminal opening, and the outer diameter of the helical winding is greater than the diameter of the shaft but small enough to pass through the luminal opening. In one presently preferred embodiment for use with a catheter having a luminal opening of 0.020 inch, for example, the shaft has a diameter on the order of 0.008 inch and the helical coil has an outer diameter on the order of 0.018 inch. The coil is relatively short compared to the overall length of the guide wire, and shaft 21 is substantially longer than the coil. In one presently preferred embodiment, for example, the guide wire has an overall length on the order of 175 cm, and the helical coil has a length on the order of 4 cm.

Shaft 21 and helical coil 24 are each fabricated of a suitable material such as stainless steel wire, and in the embodiment of FIG. 1 the distal end portion of the shaft is tapered to provide a gradual transition in flexibility between the very flexible coil and the stiffer shaft. In this particular embodiment, the tapered portion of the shaft extends all the way to the distal end of the coil, but it can terminate before the end, if desired.

The coil and shaft are bonded together by suitable means such as brazing, welding or soldering, as indicated at 29, in the region of the overlap. If desired, the bond can be made with a radio opaque material to make the tip of the wire visible to a fluoroscope or other conventional radiographic instrument. The radio opaque material preferably has a density of at least 13 gm/cm3, and suitable materials include gold, tantalum, tungsten, platinum, iridium, rhenium and alloys of these materials. One presently preferred material is an alloy containing on the order of about 80% gold, 12% silver, and 8% copper and zinc. If desired, coil 24 itself can be fabricated of a radio opaque material such as tungsten, tantalum, platinum, gold or an alloy thereof to make the entire coil visible to a fluoroscope.

A relatively smooth, rounded tip 31 is provided at the distal end of helical coil to facilitate insertion of the wire into the cardiovascular system without damage to the surrounding tissue. If the embodiment illustrated, this tip comprises a plug which is inserted partially into the distal end portion of coil 24 and heated to form a bond with the coil and the tip of shaft 21. This plug can also be fabricated of a radio opaque material to make the tip visible to a fluoroscope or other radiographic instrument. Alternatively, the rounded tip can be formed by fusing the distal end of the wire forming the helical coil into the desired rounded shape.

In the embodiment of FIG. 1, connections to the proximal ends of guide wire 11 and catheter 12 are made through a side arm adapter 36 having an axially extending body 37 and a side arm 38 which extends at an angle from the body. The connector fitting 17 at the proximal end of the catheter is connected to one end of the adapter body by suitable connector 39, and the luminal opening of the catheter is in fluid communication with the chamber formed within the adapter. The guide wire extends axially through the adapter body, and a control knob 41 is affixed to the end of the wire beyond the adapter. An O-ring assembly 42 provides a fluid-tight seal about the guide wire at the rear of the adapter body while permitting the wire to be rotated within the body. Communication with the passageway of the catheter is provided through side arm 38, and suitable appliances can be connected to the side arm for introducing fluids into or receiving fluids from the catheter.

Operation and use of the guide wire, and therein the method of the invention, are as follows. The guide wire is inserted into the luminal opening of the catheter, and the guide wire and the catheter are inserted together into the cardiovascular system, with helical coil 24 extending from the distal end of the catheter. The guide wire and catheter can be inserted either directly into the system or through a guiding catheter, as desired. The torsional rigidity of shaft 21 permits the guide wire to be turned or steered by rotating control knob 41, and the flexibility of coil 24 facilitates movement of the wire into the artery or other passageway in the body without damage to the surrounding tissue. The position of the wire is determined by monitoring the radio opaque marker or markers at the distal end with a fluoroscope or other radiographic instrument. The catheter is advanced along the wire until it is in the desired position. Because of the relatively small diameter of shaft 21 compared to the cross-sectional area of the luminal opening, fluids can be passed through the catheter without removing the guide wire. For example, a contrast material or dye can be introduced through the annular passageway formed between the shaft of the guide wire and the wall of the luminal opening, and pressure measurements can be made through this same passageway.

As illustrated in FIG. 3, coil 24 can be bent in any suitable manner to facilitate steering of the wire into a side branch of the cardiovascular system. The angle of the bend can be chosen in accordance with the angle of the branch into which the guide wire is to be inserted.

The embodiment of FIG. 4 is generally similar to the embodiment of FIGS. 1-2, and like reference numerals designate corresponding elements in the two embodiments. In the embodiment of FIG. 4, the tapered end portion 23 of the shaft 21 terminates prior to the distal end of coil 24, and the windings toward the distal end of the coil are spaced apart to provide a tip which is substantially more flexible than the remainder of the guide wire. A safety wire 36 extends between the distal end of shaft 21 and the distal end of coil 24, and is fabricated of a material stronger than the coil. This wire prevents the coil from being overstretched or broken in use, and it also facilitates the shaping of coil 24 into various curves for steering into side branches of the cardiovascular system. Suitable materials for the safety wire include tungsten and other metals or alloys stronger than stainless steel. In one presently preferred embodiment, the wire comprises a flat tungsten ribbon having a generally rectanguar cross-section, with a width of about 0.003 inch and a thickness of about 0.001 inch. This ribbon allows the coil to remain extremely flexible and helps the coil retain a curvature to which it is formed. The safety wire is bonded both to shaft 21 and to end plug 31, and in the embodiment illustrated, the proximal end of the safety wire is secured by the same bond 29 that affixes the coil to the shaft. Alternatively, if desired, the proximal end of the safety wire can be affixed to the tapered portion of the shaft. Operation and use of the embodiment of FIG. 4 is similar to that described above.

It is apparent from the foregoing that a new and improved guide wire and method of using the same have been provided. While only certain presently preferred embodiments have been described in detail, as will be apparent to those familiar with the art, certain changes and modifications can be made without departing from the scope of the invention as defined by the following claims.

Claims (16)

    We claim: .[.1. In a guide wire for use in the placement of a catheter in the cardiovascular system, an elongated shaft of relatively rigid material having proximal and distal ends and a cross-sectional area substantially smaller than the luminal opening in the catheter, a relatively flexible helical coil having proximal and distal ends, said coil having an outer diameter slightly smaller than the diameter of the luminal opening and a length substantially less than the length of the shaft, the distal end portion of the shaft extending into the coil but terminating short of the distal end of the coil, the portion of the shaft extending into the coil being tapered to provide a gradual transition in flexibility of the shaft, means for bonding the proximal end of the coil to the shaft and a flexible safety wire disposed interiorally of the coil and having one end bonded to the distal extremity of the shaft and having the other end bonded to the
  1. distal extremity of the coil..]. 2. A guide wire as in claim .[.1.]. .Iadd.17 .Iaddend.wherein the safety wire is formed as a flat ribbon
  2. having a generally rectangular cross section. 3. A guide wire as in claim .[.1.]. .Iadd.17 .Iaddend.together with a relatively smooth rounded tip
  3. disposed at the distal extremity of the coil. 4. A guide wire as in claim .[.1.]. .Iadd.17 .Iaddend.together with a radio opaque marker formed of radio opaque material carried by the shaft adjacent the distal end of the
  4. shaft. 5. A guide wire as in claim 4 wherein the radio opaque material has
  5. a density of at least 13 gm/cm3. 6. A guide wire a in claim 5 wherein the radio opaque material includes an element selected from the group consisting of gold, tantalumm, tungsten, platinum, iridium, rhenium and
  6. alloys thereof. 7. A guide wire as in claim 6 wherein the radio opaque material comprises an alloy containing on the order of 80% gold, 12%
  7. siliver, and 8% copper and zinc. 8. A guide wire as in claim .[.1.]. .Iadd.17 .Iaddend.wherein the helical coil is formed of a radio opaque
  8. material. 9. .[.In apparatus.]. .Iadd.A dilatation catheter assembly .Iaddend.for use in the cardiovascular system.[.,.]. .Iadd.of a patient comprising .Iaddend.an elongated, relatively flexible catheter having a wall defining an axially extending .[.luminal opening.]. .Iadd.lumen .Iaddend.and a guide wire extending through the .[.luminal opening.]. .Iadd.lumen .Iaddend.and having a .[.cross-sectional area.]. .Iadd.diameter .Iaddend.substantially smaller than the .[.luminal opening.]. .Iadd.lumen .Iaddend.so that fluids can pass freely between the guide wire and the wall defining the .[.luminal opening.]. .Iadd.lumen.Iaddend., said guide wire comprising an elongated shaft of relatively rigid material having proximal and distal ends and a .[.cross-sectional area.]. .Iadd.diameter .Iaddend.substantially smaller than .[.the luminal opening in the catheter.]. .Iadd.0.02 inch.Iaddend., a relatively flexible helical coil having proximal and distal ends, said coil having an outer diameter slightly smaller than .[.the diameter of the luminal opening.]. .Iadd.0.02 inch and substantially larger than the diameter of the shaft .Iaddend.and a length substantially less than the length of the shaft, the distal end portion of the shaft extending into the helical coil but terminating short of the distal end of the coil, the portion of the shaft extending into the coil being tapered to provide a gradual transition in flexibility of the shaft, means for bonding the proximal end of the coil to the shaft and a flexible safety wire disposed interiorally of the coil and having one end bonded to the distal extremity of the shaft and having the other end bonded to the distal extremity of
  9. the coil. 10. Apparatus as in claim 9 wherein the safety wire is formed as
  10. a flat ribbon having a generally rectangular cross section. 11. Apparatus as in claim 9 wherein the luminal opening has a diameter on the order of 0.020 inch, the guide wire shaft has a diameter on the order of 0.008
  11. inch, and the helical coil has a diameter on the order of 0.018 inch. 12. Apparatus as in claim 9 together with a radio opaque marker formed of radio opaque material carried by the shaft adjacent the distal end of the
  12. shaft. 13. Apparatus as in claim 12 wherein the radio opaque material has
  13. a density of at least 13 gm/cm3. 14. Apparatus as in claim 12 wherein the radio opaque material includes an element selected from the group consisting of gold, tantalum, tungsten, platinum, iridium, rhenium and
  14. alloys thereof. 15. Apparatus as in claim 12 wherein the radio opaque material comprises an alloy containing on the order of 80% gold, 12%
  15. silver, and 8% copper and zinc. 16. The apparatus of claim 12 wherein the
  16. helical coil is formed of a radio opaque material. .Iadd.17. A guide wire for use in the placement of a catheter having an inner lumen extending therein into a patient's cardiovascular system comprising:
    a) an elongated shaft of relatively rigid material having proximal and distal ends and a diameter substantially smaller than the diameter of the inner lumen;
    b) a relatively flexible helical coil having proximal and distal ends and an outer diameter slightly smaller than 0.02 inch and substantially larger than the diameter of the shaft and a length substantially less than the length of the shaft, the distal end portion of the shaft being tapered to provide a gradual transition in flexibility of the shaft and the tapered portion and extending into the coil but terminating short of the distal end of the coil;
    c) means for bonding the proximal end of the coil to the shaft; and
    d) a flexible safety wire disposed interiorly of the coil and having one end bonded to the distal extremity of the shaft and having the other end bonded to the distal extremity of the coil. .Iaddend.
US06847297 1983-07-13 1986-03-27 Catheter guide wire with short spring tip and method of using the same Expired - Lifetime USRE33911E (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US06513222 US4554929A (en) 1983-07-13 1983-07-13 Catheter guide wire with short spring tip and method of using the same
US06847297 USRE33911E (en) 1983-07-13 1986-03-27 Catheter guide wire with short spring tip and method of using the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06847297 USRE33911E (en) 1983-07-13 1986-03-27 Catheter guide wire with short spring tip and method of using the same

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US06513222 Reissue US4554929A (en) 1983-07-13 1983-07-13 Catheter guide wire with short spring tip and method of using the same

Publications (1)

Publication Number Publication Date
USRE33911E true USRE33911E (en) 1992-05-05

Family

ID=27057787

Family Applications (1)

Application Number Title Priority Date Filing Date
US06847297 Expired - Lifetime USRE33911E (en) 1983-07-13 1986-03-27 Catheter guide wire with short spring tip and method of using the same

Country Status (1)

Country Link
US (1) USRE33911E (en)

Cited By (56)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5312427A (en) * 1992-10-16 1994-05-17 Shturman Cardiology Systems, Inc. Device and method for directional rotational atherectomy
US5314438A (en) * 1992-12-17 1994-05-24 Shturman Cardiology Systems, Inc. Abrasive drive shaft device for rotational atherectomy
US5356418A (en) * 1992-10-28 1994-10-18 Shturman Cardiology Systems, Inc. Apparatus and method for rotational atherectomy
US5377690A (en) * 1993-02-09 1995-01-03 C. R. Bard, Inc. Guidewire with round forming wire
US5429139A (en) * 1993-05-19 1995-07-04 Schneider (Europe) A.G. Guide wire
US5488959A (en) * 1993-12-27 1996-02-06 Cordis Corporation Medical guidewire and welding process
US5606981A (en) * 1994-03-11 1997-03-04 C. R. Bard, Inc. Catheter guidewire with radiopaque markers
EP0770404A1 (en) 1995-10-27 1997-05-02 Cordis Corporation Guidewire assembly
US5636642A (en) * 1993-05-11 1997-06-10 Target Therapeutics, Inc. Deformable tip super elastic guidewire
US5706826A (en) * 1995-03-02 1998-01-13 Schneider (Europe) A.G. Guide wire with helical coil
US5720300A (en) * 1993-11-10 1998-02-24 C. R. Bard, Inc. High performance wires for use in medical devices and alloys therefor
US5749837A (en) * 1993-05-11 1998-05-12 Target Therapeutics, Inc. Enhanced lubricity guidewire
WO1998022024A1 (en) * 1996-11-19 1998-05-28 Interventional Technologies Inc. Medical guidewire with fully hardened core
US5769796A (en) * 1993-05-11 1998-06-23 Target Therapeutics, Inc. Super-elastic composite guidewire
US5772609A (en) * 1993-05-11 1998-06-30 Target Therapeutics, Inc. Guidewire with variable flexibility due to polymeric coatings
US5836892A (en) * 1995-10-30 1998-11-17 Cordis Corporation Guidewire with radiopaque markers
US6206834B1 (en) * 1995-06-29 2001-03-27 Schneider (Europe) A.G. Stiffened hollow vascular device
US6235048B1 (en) 1998-01-23 2001-05-22 Innercool Therapies, Inc. Selective organ hypothermia method and apparatus
US6245029B1 (en) * 1995-02-21 2001-06-12 Nissho Corporation Stylet and connector therefor
US6251130B1 (en) 1998-03-24 2001-06-26 Innercool Therapies, Inc. Device for applications of selective organ cooling
US6340368B1 (en) 1998-10-23 2002-01-22 Medtronic Inc. Implantable device with radiopaque ends
US6361557B1 (en) 1999-02-05 2002-03-26 Medtronic Ave, Inc. Staplebutton radiopaque marker
US6379378B1 (en) 2000-03-03 2002-04-30 Innercool Therapies, Inc. Lumen design for catheter
US6383210B1 (en) 2000-06-02 2002-05-07 Innercool Therapies, Inc. Method for determining the effective thermal mass of a body or organ using cooling catheter
US6464716B1 (en) 1998-01-23 2002-10-15 Innercool Therapies, Inc. Selective organ cooling apparatus and method
US6471717B1 (en) 1998-03-24 2002-10-29 Innercool Therapies, Inc. Selective organ cooling apparatus and method
US6491716B2 (en) 1998-03-24 2002-12-10 Innercool Therapies, Inc. Method and device for applications of selective organ cooling
US6491039B1 (en) 1998-01-23 2002-12-10 Innercool Therapies, Inc. Medical procedure
US6533804B2 (en) 1998-01-23 2003-03-18 Innercool Therapies, Inc. Inflatable catheter for selective organ heating and cooling and method of using the same
US6551349B2 (en) 1998-03-24 2003-04-22 Innercool Therapies, Inc. Selective organ cooling apparatus
US20030078641A1 (en) * 1998-01-23 2003-04-24 Innercool Therapies, Inc. Selective organ hypothermia method and apparatus
US6585752B2 (en) 1998-06-23 2003-07-01 Innercool Therapies, Inc. Fever regulation method and apparatus
US20030125721A1 (en) * 1998-03-31 2003-07-03 Yon Steven A. Method and device for performing cooling or cryo-therapies, for, e.g., angioplasty with reduced restenosis or pulmonary vein cell necrosis to inhibit atrial fibrillation employing tissue protection
US6602276B2 (en) 1998-03-31 2003-08-05 Innercool Therapies, Inc. Method and device for performing cooling- or cryo-therapies for, e.g., angioplasty with reduced restenosis or pulmonary vein cell necrosis to inhibit atrial fibrillation
US6648906B2 (en) 2000-04-06 2003-11-18 Innercool Therapies, Inc. Method and apparatus for regulating patient temperature by irrigating the bladder with a fluid
US6676688B2 (en) 1998-01-23 2004-01-13 Innercool Therapies, Inc. Method of making selective organ cooling catheter
US6676690B2 (en) 1999-10-07 2004-01-13 Innercool Therapies, Inc. Inflatable heat transfer apparatus
US6685732B2 (en) 1998-03-31 2004-02-03 Innercool Therapies, Inc. Method and device for performing cooling- or cryo-therapies for, e.g., angioplasty with reduced restenosis or pulmonary vein cell necrosis to inhibit atrial fibrillation employing microporous balloon
US6692488B2 (en) 1998-01-23 2004-02-17 Innercool Therapies, Inc. Apparatus for cell necrosis
US20040167440A1 (en) * 2003-02-26 2004-08-26 Sharrow James S. Multiple diameter guidewire
US20040199230A1 (en) * 2003-02-24 2004-10-07 Yon Steve A. System and method for inducing hypothermia with control and determination of catheter pressure
US6832715B2 (en) 2001-12-03 2004-12-21 Scimed Life Systems, Inc. Guidewire distal tip soldering method
US6905509B2 (en) 1998-01-23 2005-06-14 Innercool Therapies, Inc. Selective organ cooling catheter with guidewire apparatus and temperature-monitoring device
US20050203603A1 (en) * 2004-03-12 2005-09-15 Yougandh Chitre Convertible stylet to abet in the implant of a left heart lead
US7291144B2 (en) 1998-03-31 2007-11-06 Innercool Therapies, Inc. Method and device for performing cooling- or cryo-therapies for, e.g., angioplasty with reduced restenosis or pulmonary vein cell necrosis to inhibit atrial fibrillation
US7371254B2 (en) 1998-01-23 2008-05-13 Innercool Therapies, Inc. Medical procedure
US20090143729A1 (en) * 2005-09-01 2009-06-04 Medrad, Inc. Torqueable kink-resistant guidewire
US20100022989A1 (en) * 2008-07-25 2010-01-28 Parasmo Ronald S Steerable catheter and method of making the same
US20100069880A1 (en) * 2008-09-18 2010-03-18 Jeffrey Grayzel Medical guide element with diameter transition
US7857781B2 (en) 1998-04-21 2010-12-28 Zoll Circulation, Inc. Indwelling heat exchange catheter and method of using same
US7883474B1 (en) 1993-05-11 2011-02-08 Target Therapeutics, Inc. Composite braided guidewire
US7914493B2 (en) 2005-12-02 2011-03-29 Cook Medical Technologies Llc Wire guide with engaging portion
US20120271409A1 (en) * 2011-04-25 2012-10-25 Medtronic Vascular, Inc. Helical Radiopaque Marker
US8308658B2 (en) 2007-04-13 2012-11-13 Neometrics, Inc. Medical guidewire
US9017246B2 (en) 2010-11-19 2015-04-28 Boston Scientific Scimed, Inc. Biliary catheter systems including stabilizing members
US9839766B2 (en) 2014-10-20 2017-12-12 Medtronic Cryocath Lp Centering coiled guide

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3552384A (en) * 1967-07-03 1971-01-05 American Hospital Supply Corp Controllable tip guide body and catheter
US3789841A (en) * 1971-09-15 1974-02-05 Becton Dickinson Co Disposable guide wire
US4003369A (en) * 1975-04-22 1977-01-18 Medrad, Inc. Angiographic guidewire with safety core wire
US4020829A (en) * 1975-10-23 1977-05-03 Willson James K V Spring guide wire with torque control for catheterization of blood vessels and method of using same
EP0014424A1 (en) * 1979-02-08 1980-08-20 Toray Monofilament Company Limited Medical vascular guide wire and self-guiding type catheter
US4545390A (en) * 1982-09-22 1985-10-08 C. R. Bard, Inc. Steerable guide wire for balloon dilatation procedure

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3552384A (en) * 1967-07-03 1971-01-05 American Hospital Supply Corp Controllable tip guide body and catheter
US3789841A (en) * 1971-09-15 1974-02-05 Becton Dickinson Co Disposable guide wire
US4003369A (en) * 1975-04-22 1977-01-18 Medrad, Inc. Angiographic guidewire with safety core wire
US4020829A (en) * 1975-10-23 1977-05-03 Willson James K V Spring guide wire with torque control for catheterization of blood vessels and method of using same
EP0014424A1 (en) * 1979-02-08 1980-08-20 Toray Monofilament Company Limited Medical vascular guide wire and self-guiding type catheter
US4545390A (en) * 1982-09-22 1985-10-08 C. R. Bard, Inc. Steerable guide wire for balloon dilatation procedure

Cited By (102)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5312427A (en) * 1992-10-16 1994-05-17 Shturman Cardiology Systems, Inc. Device and method for directional rotational atherectomy
US5360432A (en) * 1992-10-16 1994-11-01 Shturman Cardiology Systems, Inc. Abrasive drive shaft device for directional rotational atherectomy
US5356418A (en) * 1992-10-28 1994-10-18 Shturman Cardiology Systems, Inc. Apparatus and method for rotational atherectomy
US5314438A (en) * 1992-12-17 1994-05-24 Shturman Cardiology Systems, Inc. Abrasive drive shaft device for rotational atherectomy
US5377690A (en) * 1993-02-09 1995-01-03 C. R. Bard, Inc. Guidewire with round forming wire
US5769796A (en) * 1993-05-11 1998-06-23 Target Therapeutics, Inc. Super-elastic composite guidewire
US5772609A (en) * 1993-05-11 1998-06-30 Target Therapeutics, Inc. Guidewire with variable flexibility due to polymeric coatings
US7883474B1 (en) 1993-05-11 2011-02-08 Target Therapeutics, Inc. Composite braided guidewire
US5636642A (en) * 1993-05-11 1997-06-10 Target Therapeutics, Inc. Deformable tip super elastic guidewire
US5749837A (en) * 1993-05-11 1998-05-12 Target Therapeutics, Inc. Enhanced lubricity guidewire
US5891055A (en) * 1993-05-19 1999-04-06 Schneider (Europe) A.G. Guide wire
US5429139A (en) * 1993-05-19 1995-07-04 Schneider (Europe) A.G. Guide wire
US5720300A (en) * 1993-11-10 1998-02-24 C. R. Bard, Inc. High performance wires for use in medical devices and alloys therefor
US5488959A (en) * 1993-12-27 1996-02-06 Cordis Corporation Medical guidewire and welding process
US5606981A (en) * 1994-03-11 1997-03-04 C. R. Bard, Inc. Catheter guidewire with radiopaque markers
US6245029B1 (en) * 1995-02-21 2001-06-12 Nissho Corporation Stylet and connector therefor
US5706826A (en) * 1995-03-02 1998-01-13 Schneider (Europe) A.G. Guide wire with helical coil
US20110144625A1 (en) * 1995-05-26 2011-06-16 Target Therapeutics, Inc. Composite Braided Guidewire
US6206834B1 (en) * 1995-06-29 2001-03-27 Schneider (Europe) A.G. Stiffened hollow vascular device
EP0770404A1 (en) 1995-10-27 1997-05-02 Cordis Corporation Guidewire assembly
US5830155A (en) * 1995-10-27 1998-11-03 Cordis Corporation Guidewire assembly
US5836892A (en) * 1995-10-30 1998-11-17 Cordis Corporation Guidewire with radiopaque markers
WO1998022024A1 (en) * 1996-11-19 1998-05-28 Interventional Technologies Inc. Medical guidewire with fully hardened core
US6235048B1 (en) 1998-01-23 2001-05-22 Innercool Therapies, Inc. Selective organ hypothermia method and apparatus
US7998182B2 (en) 1998-01-23 2011-08-16 Innercool Therapies, Inc. Selective organ cooling apparatus
US7951183B2 (en) 1998-01-23 2011-05-31 Innercool Therapies, Inc. Medical procedure
US8163000B2 (en) 1998-01-23 2012-04-24 Innercool Therapies, Inc. Selective organ cooling catheter with guidewire apparatus and temperature-monitoring device
US6464716B1 (en) 1998-01-23 2002-10-15 Innercool Therapies, Inc. Selective organ cooling apparatus and method
US7766949B2 (en) 1998-01-23 2010-08-03 Innercool Therapies, Inc. Fever regulation method and apparatus
US7651518B2 (en) 1998-01-23 2010-01-26 Innercool Therapies, Inc. Inflatable catheter for selective organ heating and cooling and method of using the same
US6482226B1 (en) 1998-01-23 2002-11-19 Innercool Therapies, Inc. Selective organ hypothermia method and apparatus
US7294142B2 (en) 1998-01-23 2007-11-13 Innercool Therapies Selective organ cooling catheter with guidewire apparatus and temperature-monitoring device
US6491039B1 (en) 1998-01-23 2002-12-10 Innercool Therapies, Inc. Medical procedure
US20030018375A1 (en) * 1998-01-23 2003-01-23 Dobak John D. Selective organ cooling apparatus and method
US6533804B2 (en) 1998-01-23 2003-03-18 Innercool Therapies, Inc. Inflatable catheter for selective organ heating and cooling and method of using the same
US6540771B2 (en) 1998-01-23 2003-04-01 Innercool Therapies, Inc. Inflatable catheter for selective organ heating and cooling and method of using the same
US7094253B2 (en) 1998-01-23 2006-08-22 Innercool Therapies, Inc. Fever regulation method and apparatus
US20030078641A1 (en) * 1998-01-23 2003-04-24 Innercool Therapies, Inc. Selective organ hypothermia method and apparatus
US6558412B2 (en) 1998-01-23 2003-05-06 Innercool Therapies, Inc. Selective organ hypothermia method and apparatus
US7066948B2 (en) 1998-01-23 2006-06-27 Innercool Therapies, Inc. Selective organ cooling apparatus and method
US7063718B2 (en) 1998-01-23 2006-06-20 Innercool Therapies, Inc. Selective organ hypothermia method and apparatus
US6905509B2 (en) 1998-01-23 2005-06-14 Innercool Therapies, Inc. Selective organ cooling catheter with guidewire apparatus and temperature-monitoring device
US6887262B2 (en) 1998-01-23 2005-05-03 Innercool Therapies, Inc. Selective organ cooling apparatus and method
US20030144714A1 (en) * 1998-01-23 2003-07-31 Innercool Therapies, Inc. Selective organ hypothermia method and apparatus
US6786218B2 (en) 1998-01-23 2004-09-07 Innercool Therapies, Inc. Medical procedure
US20040153133A1 (en) * 1998-01-23 2004-08-05 Innercool Therapies, Inc. Selective organ cooling apparatus and method
US6648908B2 (en) 1998-01-23 2003-11-18 Innercool Therapies, Inc. Inflatable catheter for selective organ heating and cooling and method of using the same
US6755850B2 (en) 1998-01-23 2004-06-29 Innercool Therapies, Inc. Selective organ hypothermia method and apparatus
US6676689B2 (en) 1998-01-23 2004-01-13 Innercool Therapies, Inc. Inflatable catheter for selective organ heating and cooling and method of using the same
US6676688B2 (en) 1998-01-23 2004-01-13 Innercool Therapies, Inc. Method of making selective organ cooling catheter
US6702842B2 (en) 1998-01-23 2004-03-09 Innercool Therapies, Inc. Selective organ cooling apparatus and method
US6695873B2 (en) 1998-01-23 2004-02-24 Innercool Therapies, Inc. Inflatable catheter for selective organ heating and cooling and method of using the same
US6692488B2 (en) 1998-01-23 2004-02-17 Innercool Therapies, Inc. Apparatus for cell necrosis
US7371254B2 (en) 1998-01-23 2008-05-13 Innercool Therapies, Inc. Medical procedure
US6471717B1 (en) 1998-03-24 2002-10-29 Innercool Therapies, Inc. Selective organ cooling apparatus and method
US6475231B2 (en) 1998-03-24 2002-11-05 Innercool Therapies, Inc. Method and device for applications of selective organ cooling
US6251130B1 (en) 1998-03-24 2001-06-26 Innercool Therapies, Inc. Device for applications of selective organ cooling
US6491716B2 (en) 1998-03-24 2002-12-10 Innercool Therapies, Inc. Method and device for applications of selective organ cooling
US6551349B2 (en) 1998-03-24 2003-04-22 Innercool Therapies, Inc. Selective organ cooling apparatus
US6582455B1 (en) 1998-03-24 2003-06-24 Innercool Therapies, Inc. Method and device for applications of selective organ cooling
US20030125721A1 (en) * 1998-03-31 2003-07-03 Yon Steven A. Method and device for performing cooling or cryo-therapies, for, e.g., angioplasty with reduced restenosis or pulmonary vein cell necrosis to inhibit atrial fibrillation employing tissue protection
US8043283B2 (en) 1998-03-31 2011-10-25 Innercool Therapies, Inc. Method and device for performing cooling- or cryo-therapies for, e.g., angioplasty with reduced restenosis or pulmonary vein cell necrosis to inhibit atrial fibrillation
US20080300585A1 (en) * 1998-03-31 2008-12-04 Innercool Therapies, Inc. Method and device for performing cooling-or cryo-therapies for, e.g., angioplasty with reduced restenosis or pulmonary vein cell necrosis to inhibit atrial fibrillation
US6602276B2 (en) 1998-03-31 2003-08-05 Innercool Therapies, Inc. Method and device for performing cooling- or cryo-therapies for, e.g., angioplasty with reduced restenosis or pulmonary vein cell necrosis to inhibit atrial fibrillation
US8157794B2 (en) 1998-03-31 2012-04-17 Innercool Therapies, Inc. Method and device for performing cooling-or cryo-therapies for, e.g., angioplasty with reduced restenosis or pulmonary vein cell necrosis to inhibit atrial fibrillation
US7001378B2 (en) 1998-03-31 2006-02-21 Innercool Therapies, Inc. Method and device for performing cooling or cryo-therapies, for, e.g., angioplasty with reduced restenosis or pulmonary vein cell necrosis to inhibit atrial fibrillation employing tissue protection
US7449018B2 (en) 1998-03-31 2008-11-11 Innercool Therapies, Inc. Method and device for performing cooling- or cryo-therapies for, e.g., angioplasty with reduced restenosis or pulmonary vein cell necrosis to inhibit atrial fibrillation employing microporous balloon
US6685732B2 (en) 1998-03-31 2004-02-03 Innercool Therapies, Inc. Method and device for performing cooling- or cryo-therapies for, e.g., angioplasty with reduced restenosis or pulmonary vein cell necrosis to inhibit atrial fibrillation employing microporous balloon
US7291144B2 (en) 1998-03-31 2007-11-06 Innercool Therapies, Inc. Method and device for performing cooling- or cryo-therapies for, e.g., angioplasty with reduced restenosis or pulmonary vein cell necrosis to inhibit atrial fibrillation
US7857781B2 (en) 1998-04-21 2010-12-28 Zoll Circulation, Inc. Indwelling heat exchange catheter and method of using same
US6585752B2 (en) 1998-06-23 2003-07-01 Innercool Therapies, Inc. Fever regulation method and apparatus
US7018399B2 (en) 1998-06-23 2006-03-28 Innercool Therapies, Inc. Method of making selective organ cooling catheter
US6340368B1 (en) 1998-10-23 2002-01-22 Medtronic Inc. Implantable device with radiopaque ends
US6361557B1 (en) 1999-02-05 2002-03-26 Medtronic Ave, Inc. Staplebutton radiopaque marker
US7052508B2 (en) 1999-10-07 2006-05-30 Innercool Therapies, Inc. Inflatable heat transfer apparatus
US6676690B2 (en) 1999-10-07 2004-01-13 Innercool Therapies, Inc. Inflatable heat transfer apparatus
US6576001B2 (en) 2000-03-03 2003-06-10 Innercool Therapies, Inc. Lumen design for catheter
US6379378B1 (en) 2000-03-03 2002-04-30 Innercool Therapies, Inc. Lumen design for catheter
US6648906B2 (en) 2000-04-06 2003-11-18 Innercool Therapies, Inc. Method and apparatus for regulating patient temperature by irrigating the bladder with a fluid
US6918924B2 (en) 2000-04-06 2005-07-19 Innercool Therapies, Inc. Method and apparatus for regulating patient temperature by irrigating the bladder with a fluid
US6383210B1 (en) 2000-06-02 2002-05-07 Innercool Therapies, Inc. Method for determining the effective thermal mass of a body or organ using cooling catheter
US6660028B2 (en) 2000-06-02 2003-12-09 Innercool Therapies, Inc. Method for determining the effective thermal mass of a body or organ using a cooling catheter
US7211105B2 (en) 2000-06-02 2007-05-01 Innercool Therapias, Inc. Method for determining the effective thermal mass of a body or organ using a cooling catheter
US6832715B2 (en) 2001-12-03 2004-12-21 Scimed Life Systems, Inc. Guidewire distal tip soldering method
US20040199230A1 (en) * 2003-02-24 2004-10-07 Yon Steve A. System and method for inducing hypothermia with control and determination of catheter pressure
US7300453B2 (en) 2003-02-24 2007-11-27 Innercool Therapies, Inc. System and method for inducing hypothermia with control and determination of catheter pressure
US8167821B2 (en) 2003-02-26 2012-05-01 Boston Scientific Scimed, Inc. Multiple diameter guidewire
US20040167440A1 (en) * 2003-02-26 2004-08-26 Sharrow James S. Multiple diameter guidewire
US7181290B2 (en) * 2004-03-12 2007-02-20 Pacesetter, Inc. Convertible stylet to abet in the implant of a left heart lead
US20070233214A1 (en) * 2004-03-12 2007-10-04 Pacesetter, Inc. Convertible stylet to abet in the implant of a left heart lead
US20050203603A1 (en) * 2004-03-12 2005-09-15 Yougandh Chitre Convertible stylet to abet in the implant of a left heart lead
US20090143729A1 (en) * 2005-09-01 2009-06-04 Medrad, Inc. Torqueable kink-resistant guidewire
US8157766B2 (en) 2005-09-01 2012-04-17 Medrad, Inc. Torqueable kink-resistant guidewire
US7914493B2 (en) 2005-12-02 2011-03-29 Cook Medical Technologies Llc Wire guide with engaging portion
US8308658B2 (en) 2007-04-13 2012-11-13 Neometrics, Inc. Medical guidewire
US20100022989A1 (en) * 2008-07-25 2010-01-28 Parasmo Ronald S Steerable catheter and method of making the same
US20100069880A1 (en) * 2008-09-18 2010-03-18 Jeffrey Grayzel Medical guide element with diameter transition
US8485969B2 (en) 2008-09-18 2013-07-16 Jeffrey Grayzel Medical guide element with diameter transition
US9238124B2 (en) 2008-09-18 2016-01-19 Jeffrey Grayzel Medical guide element with diameter transition
US9017246B2 (en) 2010-11-19 2015-04-28 Boston Scientific Scimed, Inc. Biliary catheter systems including stabilizing members
US20120271409A1 (en) * 2011-04-25 2012-10-25 Medtronic Vascular, Inc. Helical Radiopaque Marker
US9839766B2 (en) 2014-10-20 2017-12-12 Medtronic Cryocath Lp Centering coiled guide

Similar Documents

Publication Publication Date Title
US6306105B1 (en) High performance coil wire
US6544197B2 (en) Composite guidewire
US5368049A (en) Superelastic formable guidewire with malleable cladding
US5122125A (en) Catheter for angioplasty with soft centering tip
US6524301B1 (en) Guidewire with an intermediate variable stiffness section
US5876356A (en) Superelastic guidewire with a shapeable tip
US4827941A (en) Extendable guidewire for cardiovascular procedures
US5480382A (en) Steerable medical device
US5312340A (en) Balloon dilatation catheter having dual sealing plugs
US5984877A (en) Guide wire marker technique and coil spring marker technique
US4793350A (en) Liquid filled low profile dilatation catheter
US5478330A (en) Steerable catheter with adjustable bend location and/or radius and method
US5131407A (en) Guidewire with tracking member and catheter exchange system
US5213111A (en) Composite wire guide construction
US4841976A (en) Steerable catheter guide
US5129890A (en) Hydrophilically coated flexible wire guide
US4771788A (en) Doppler tip wire guide
US6059767A (en) Steerable unitary infusion catheter/guide wire incorporating detachable infusion port assembly
US20040181175A1 (en) Guidewire
US4757827A (en) Steerable guidewire with deflectable tip
US4940062A (en) Guiding member with deflectable tip
US5673707A (en) Enhanced performance guidewire
US4748986A (en) Floppy guide wire with opaque tip
US20070244413A1 (en) Medical guidewire tip construction
US4957110A (en) Steerable guidewire having electrodes for measuring vessel cross-section and blood flow

Legal Events

Date Code Title Description
FPAY Fee payment

Year of fee payment: 8

FPAY Fee payment

Year of fee payment: 12