US3731671A - Low-friction catheter guide - Google Patents

Low-friction catheter guide Download PDF

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Publication number
US3731671A
US3731671A US3731671DA US3731671A US 3731671 A US3731671 A US 3731671A US 3731671D A US3731671D A US 3731671DA US 3731671 A US3731671 A US 3731671A
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guide
coil
catheter
friction
catheter guide
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Expired - Lifetime
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N Mageoh
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Cordis Corp
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Cordis Corp
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    • 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
    • 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
    • A61M2025/09058Basic structures of guide wires
    • A61M2025/09075Basic structures of guide wires having a core without a coil possibly combined with a sheath

Abstract

A low-friction catheter guide for facilitating the insertion of catheters into the vascular system of human beings or animals, especially where insertion through relatively long lengths of blood vessels is involved. Friction is minimized by forming a catheter guide over which the lumen of the enclosing catheter passes and contact between the two is reduced to a series of point contacts. The guide is formed in such a fashion that a series of radial extensions or protuberances constitute the contact areas. A preferred method of forming the guide is by winding a wire upon a non-circular mandrel and permitting the coil to unwind slightly after it is removed from the mandrel. The unwinding or springback results in adjacent convolutions of the coil being rotated slightly with respect to each other.

Description

I United States Patent 1 [111 3,731,671

Mageoh 1 May 8, 1973 54 LOW-FRICTION CATHETER GUIDE 3,528,406 9 1970 Jeckel ..128 2.o5 R

75 I t N l H. M h 3301 N.E. 5th 1 nven or e son ageo Primary Examiner--Aldrich F. Medbery Avenue, Fla.

Attorney-George W. Crowley [73] Assignee: Cordis Corporation, Miami, Fla. 221 Filed: on. 21, 1971 [57] ABSTRACT [211 App- No': 191,186 low-friction catheter guide for facilitating the insertron of catheters mto the vascular system of human beings or animals, especially where insertion through [52] US Cl 1 8/1 128/2 /349 R relatively long lengths of blood vessels is involved. /0 A61b Friction is minimized by forming a catheter guide over A61!) which the lumen of the enclosing catheter passes and [58] Field of Search ..l28/2.05 R, 127, ontact between the two is reduced to a series of point 349 2 M contacts. The guide is formed in such a fashion that a series of radial extensions or protuberances constitute [56] Referenc s Cit d the contact areas. A preferred method of forming the guide is by winding a wire upon a non-circular man- UNITED STATES PATENTS drel and permitting the coil to unwind slightly after it 2,118,631 5/1938 Wappler ..l28/349 R s r m d fr m th mandrel. The unwinding or 3,060,972 10/1962 Sheldon springback results in adjacent convolutions of the coil 3,452,742 7/1969 Muller being rotated slightly with respect to each other. 3,485,237 12/1969 Bedford.... 3,521,620 7/1970 Cook ..128/2.05 R 7 Claims, 4 Drawing Figures LOW-FRICTION CATHETER GUIDE BACKGROUND OF THE INVENTION Catheterization of human beings or animals has become relatively common in certain diagnostic techniques such as angiography. These techniques involve the insertion of a catheter into the vascular system and it was early learned that ease of insertion and greater control of direction is possible if a flexible guide is first inserted. The catheter itself may then be passed over the guide. However, friction between the .lumen of the catheter and the guide is unavoidable and the greater the length of insertion, the greater the friction becomes. Several obvious steps have been taken to reduce the friction such as coating the guide with plastic materials. A commonly used friction-reducing material is the well-known fluorocarbon Teflon.

Further to; reduce friction and to provide greater flexibility and control, it has been the practice to employ a fine wire wound in a tightly coiled helix rather than a simple relatively large solid wire as the guide. Obviously, such a helix not only is more flexible than a solid wire but also has less areal contact with the lumen of the enclosing catheter.

Helical catheter guides are formed in a conventional manner, generally by winding a wire upon a circular mandrel or by utilizing a coil-forming machine which forms a helical coil without need of a mandrel. Conventionally, a guide generally also includes a central axial wire and a smooth end tip to which both the wire and coil are connected.

GENERAL DESCRIPTION OF THE INVENTION The present invention has as its major object further reduction of the friction between a catheter lumen and the flexible guide over which it is designed to pass. That object is preferably obtained by utilizing a non-circular mandrel. If, for example, a flattened or oval mandrel is utilized, a flattened or oval coil can be wound. When the mandrel is removed from such a coil, springback occurs and the coil unwinds to some degree. The resulting guide coil becomes one in which adjacent turns of the coil are rotationally displaced relative to each other. Stated otherwise, the major axis of the ellipse formed by each turn of the coil is rotated slightly from that of its adjacent turn. Thus, when a catheter is passed over the guide, contact between the lumen of the catheter and the guide itself occurs only at a series of relatively widely spaced points. Friction between the guide and the lumen is radically decreased as the catheter is moved with respect to the guide.

For a better understanding of the present invention, together with other and further features thereof, reference should be made to the following detailed description of a preferred embodiment of the invention as shown in the drawing in which:

FIG. 1 is an elevation, partly in section, and partly cut away showing a guide in the process of being wound upon a non-circular mandrel.

FIG. 2 is a cross-section of the guide and mandrel shown in FIG. 1.

FIG. 3 is an elevation, partly in section, illustrating the passage of a catheter over a guide from which the mandrel has been withdrawn, and

FIG. 4 is a cross-section taken along the lines 4-4 of FIG. 3.

DESCRIPTION OF THE PREFERRED EMBODIMENT As noted above, achievement of the purposes of the invention is facilitated by utilizinga non-circular mandrel upon which a wire is tightly wound. In FIG. 1, a mandrel 12 in the form of a flattened or oval wire is illustrated. Tightly wound upon the mandrel 12 is a coil 14 composed preferably of stainless steel wire of much smaller diameter than that of the mandrel. Relative sizes and shapes may be better appreciated and understood by reference to FIG. 2.

In the fabrication. of a practical guide, of course, many feet of wire 14 are wound upon the mandrel 12 after which the mandrel is withdrawn from the formed coil, the coil itself being several feet or more in length. In the winding process, a slight amount of tension is imparted to the wire 14 and, upon withdrawal of the mandrel, springback occurs. This springback causes a slight unwinding of the coil to take place and adjacent turns or convolutions of the coil rotate slightly with respect to each other. With the type of oval or elliptical mandrel here under consideration, the coil which results is one in which the major axis of the ellipse formed by each convolution is rotated slightly from its neighboring turn.

In FIGS. 3 and 4, the coil of wire 14 may be seen in plan and section in relation to a catheter 16. Rather than the continuous peripheral contact that would exist between a conventional helical coil and the lumen of the catheter, contact is reduced to a series of points and these points are relatively widely spaced from one another along the length of the catheter as well as around its internal surface.

Although the preferred construction of the catheter guide is as described and shown, other embodiments of the invention are also feasable, the basic concept being the reduction of contact between lumen and guide to a series of points. Also, mandrels of cross-section other than oval may also be used, of course. For example, a triangular mandrel might well be used and, again, contact between catheter wall and guide would be considerably reduced as compared to that where a straight helix is utilized. Basically, a guide of non-circular crosssection is contemplated and the presently preferred embodiment involves the use of an oval guide in which adjacent turns are rotated relative to each other.

Iclaim 1. A low-friction catheter guide comprising a length of wire formed into a coil of non-circular cross-section the successive convolutions of which are axially disoriented from its adjacent convolution.

2. A low-friction catheter guide as defined in claim 1 wherein said coil is formed of a plurality of turns, each of said turns being of similar non-circular configuration, and being progressively axially rotationally displaced relative to its adjacent turns.

3. A low-friction catheter guide as defined in claim 1 wherein said coil comprises turns of wire of generally oval cross-section.

4. A low-friction catheter guide as defined in claim 3 wherein adjacent ones of said turns of oval cross-section are rotationally displaced relative to each other.

5. In combination with a catheter having a lumen, a catheter guide over which said catheter may be passed, said guide being formed with a successive series of longitudinally spaced radially offset protuberances, said 3 ,73 l ,67 l 3 4 lumen being in contact only with said spaced protube- 7. In a combination as defined in claim 6, a catheter rances.

6. ln a combination as defined in claim 5, a catheter guide comprising a length of wire formed into a coil of non-circular cross-section, said protuberances com- 5 prising the radial extremities of said coil.

guide in which each turn of said coil has a generally oval cross-section, adjacent turns being rotationally displaced from one another.

Claims (7)

1. A low-friction catheter guide comprising a length of wire formed into a coil of non-circular cross-section the successive convolutions of which are axially disoriented from its adjacent convolution.
2. A low-friction catheter guide as defined in claim 1 wherein said coil is formed of a plurality of turns, each of said turns being of similar non-circular configuration, and being progressively axially rotationally displaced relative to its adjacent turns.
3. A low-friction catheter guide as defined in claim 1 wherein said coil comprises turns of wire of generally oval cross-section.
4. A low-friction catheter guide as defined in claim 3 wherein adjacent ones of said turns of oval cross-section are rotationally displaced relative to each other.
5. In combination with a catheter having a lumen, a catheter guide over which said catheter may be passed, said guide being formed with a successive series of longitudinally spaced radially offset protuberances, said lumen being in contact only with saId spaced protuberances.
6. In a combination as defined in claim 5, a catheter guide comprising a length of wire formed into a coil of non-circular cross-section, said protuberances comprising the radial extremities of said coil.
7. In a combination as defined in claim 6, a catheter guide in which each turn of said coil has a generally oval cross-section, adjacent turns being rotationally displaced from one another.
US3731671D 1971-10-21 1971-10-21 Low-friction catheter guide Expired - Lifetime US3731671A (en)

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Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4003369A (en) * 1975-04-22 1977-01-18 Medrad, Inc. Angiographic guidewire with safety core wire
FR2420978A1 (en) * 1978-03-28 1979-10-26 Fresenius Chem Pharm Ind Chuck for catheter
US4323071A (en) * 1978-04-24 1982-04-06 Advanced Catheter Systems, Inc. Vascular guiding catheter assembly and vascular dilating catheter assembly and a combination thereof and methods of making the same
US4474174A (en) * 1979-05-21 1984-10-02 American Hospital Supply Corporation Surgical instrument for an endoscope
US4548206A (en) * 1983-07-21 1985-10-22 Cook, Incorporated Catheter wire guide with movable mandril
US4577643A (en) * 1984-05-10 1986-03-25 Cordis Corporation Movable multi-contact electromechanical connection
EP0184684A2 (en) * 1984-12-08 1986-06-18 N.V. Nutricia Mandrel to stiffen probes
US4886500A (en) * 1988-11-07 1989-12-12 Lazarus Harrison M External guide wire
US4922924A (en) * 1989-04-27 1990-05-08 C. R. Bard, Inc. Catheter guidewire with varying radiopacity
US4984581A (en) * 1988-10-12 1991-01-15 Flexmedics Corporation Flexible guide having two-way shape memory alloy
US5003918A (en) * 1989-12-28 1991-04-02 Interventional Technologies, Inc. Apparatus for manufacturing atherectomy torque tubes
US5019089A (en) * 1989-12-07 1991-05-28 Interventional Technologies Inc. Atherectomy advancing probe and method of use
US5062648A (en) * 1989-09-26 1991-11-05 Interventional Technologies, Inc. Seal for rotating torque tube with seal valve
US5209735A (en) * 1988-11-07 1993-05-11 Lazarus Harrison M External guide wire and enlargement means
US5295493A (en) * 1992-03-19 1994-03-22 Interventional Technologies, Inc. Anatomical guide wire
US5365944A (en) * 1992-10-09 1994-11-22 C. R. Bard, Inc. Guidewire extension with self-latching detachable connector
US5404887A (en) * 1993-11-04 1995-04-11 Scimed Life Systems, Inc. Guide wire having an unsmooth exterior surface
US5647846A (en) * 1995-05-17 1997-07-15 Scimed Life Systems, Inc. Catheter having geometrically shaped surface and method of manufacture
US5792116A (en) * 1995-05-17 1998-08-11 Scimed Life Systems, Inc. Catheter having geometrically shaped surface and method of manufacture
US6106485A (en) * 1997-11-18 2000-08-22 Advanced Cardivascular Systems, Inc. Guidewire with shaped intermediate portion
US6669886B1 (en) 2000-08-03 2003-12-30 Scimed Life Systems, Inc. Reinforced catheter and method of manufacture
US6673025B1 (en) 1993-12-01 2004-01-06 Advanced Cardiovascular Systems, Inc. Polymer coated guidewire
US20060161135A1 (en) * 2005-01-18 2006-07-20 Vanderwoude Brian J Ribbed catheter
US20070249964A1 (en) * 1997-06-04 2007-10-25 Advanced Cardiovascular Systems, Inc. Polymer coated guide wire
US20080146967A1 (en) * 1997-06-04 2008-06-19 Richardson Mark T Polymer coated guidewire
WO2009004876A1 (en) * 2007-06-29 2009-01-08 Piolax Medical Devices, Inc. Guide wire
US20090030277A1 (en) * 2005-04-05 2009-01-29 Ryuhei Fujimoto Endoscope Insertion Portion and Endoscope System
US20090118644A1 (en) * 2007-11-02 2009-05-07 Boston Scientific Scimed, Inc. Medical device for crossing an occlusion in a vessel
US7846171B2 (en) 2004-05-27 2010-12-07 C.R. Bard, Inc. Method and apparatus for delivering a prosthetic fabric into a patient
US8377035B2 (en) 2003-01-17 2013-02-19 Boston Scientific Scimed, Inc. Unbalanced reinforcement members for medical device
JP2014018673A (en) * 2012-07-20 2014-02-03 Depuy Synthes Products Llc Guide wire with highly flexible tip

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2118631A (en) * 1935-04-03 1938-05-24 Wappler Frederick Charles Catheter stylet
US3060972A (en) * 1957-08-22 1962-10-30 Bausch & Lomb Flexible tube structures
US3452742A (en) * 1966-05-31 1969-07-01 Us Catheter & Instr Corp Controlled vascular curvable spring guide
US3485237A (en) * 1967-03-20 1969-12-23 Rca Corp Self-propelling hose
US3521620A (en) * 1967-10-30 1970-07-28 William A Cook Vascular coil spring guide with bendable tip
US3528406A (en) * 1965-10-29 1970-09-15 Us Catheter & Instr Corp Flexible spring guide tip for insertion of vascular catheters

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2118631A (en) * 1935-04-03 1938-05-24 Wappler Frederick Charles Catheter stylet
US3060972A (en) * 1957-08-22 1962-10-30 Bausch & Lomb Flexible tube structures
US3528406A (en) * 1965-10-29 1970-09-15 Us Catheter & Instr Corp Flexible spring guide tip for insertion of vascular catheters
US3452742A (en) * 1966-05-31 1969-07-01 Us Catheter & Instr Corp Controlled vascular curvable spring guide
US3485237A (en) * 1967-03-20 1969-12-23 Rca Corp Self-propelling hose
US3521620A (en) * 1967-10-30 1970-07-28 William A Cook Vascular coil spring guide with bendable tip

Cited By (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4080706A (en) * 1975-04-22 1978-03-28 Medrad, Inc. Method of manufacturing catheter guidewire
US4003369A (en) * 1975-04-22 1977-01-18 Medrad, Inc. Angiographic guidewire with safety core wire
WO1983000631A1 (en) * 1978-03-28 1983-03-03 Gerd Krick Mandrin for catheter
FR2420978A1 (en) * 1978-03-28 1979-10-26 Fresenius Chem Pharm Ind Chuck for catheter
US4362163A (en) * 1978-03-28 1982-12-07 Eduard Fresenius Chem.-Pharm. Industrie Kg Apparatebau Kg Stiffening core for catheters
US4323071A (en) * 1978-04-24 1982-04-06 Advanced Catheter Systems, Inc. Vascular guiding catheter assembly and vascular dilating catheter assembly and a combination thereof and methods of making the same
US4474174A (en) * 1979-05-21 1984-10-02 American Hospital Supply Corporation Surgical instrument for an endoscope
US4548206A (en) * 1983-07-21 1985-10-22 Cook, Incorporated Catheter wire guide with movable mandril
US4577643A (en) * 1984-05-10 1986-03-25 Cordis Corporation Movable multi-contact electromechanical connection
EP0184684A2 (en) * 1984-12-08 1986-06-18 N.V. Nutricia Mandrel to stiffen probes
EP0184684A3 (en) * 1984-12-08 1986-10-08 Pfrimmer-Viggo Gmbh + Co. Kg Mandrel to stiffen probes
US4984581A (en) * 1988-10-12 1991-01-15 Flexmedics Corporation Flexible guide having two-way shape memory alloy
US5209735A (en) * 1988-11-07 1993-05-11 Lazarus Harrison M External guide wire and enlargement means
WO1990004985A1 (en) * 1988-11-07 1990-05-17 Lazarus Harrison M External guide wire
AU632516B2 (en) * 1988-11-07 1993-01-07 Harrison M. Lazarus External guide wire
US4886500A (en) * 1988-11-07 1989-12-12 Lazarus Harrison M External guide wire
US4922924A (en) * 1989-04-27 1990-05-08 C. R. Bard, Inc. Catheter guidewire with varying radiopacity
US5062648A (en) * 1989-09-26 1991-11-05 Interventional Technologies, Inc. Seal for rotating torque tube with seal valve
US5019089A (en) * 1989-12-07 1991-05-28 Interventional Technologies Inc. Atherectomy advancing probe and method of use
US5003918A (en) * 1989-12-28 1991-04-02 Interventional Technologies, Inc. Apparatus for manufacturing atherectomy torque tubes
US5295493A (en) * 1992-03-19 1994-03-22 Interventional Technologies, Inc. Anatomical guide wire
US5365944A (en) * 1992-10-09 1994-11-22 C. R. Bard, Inc. Guidewire extension with self-latching detachable connector
US5404887A (en) * 1993-11-04 1995-04-11 Scimed Life Systems, Inc. Guide wire having an unsmooth exterior surface
US6673025B1 (en) 1993-12-01 2004-01-06 Advanced Cardiovascular Systems, Inc. Polymer coated guidewire
US5792116A (en) * 1995-05-17 1998-08-11 Scimed Life Systems, Inc. Catheter having geometrically shaped surface and method of manufacture
US5647846A (en) * 1995-05-17 1997-07-15 Scimed Life Systems, Inc. Catheter having geometrically shaped surface and method of manufacture
US7494474B2 (en) 1997-06-04 2009-02-24 Advanced Cardiovascular Systems, Inc. Polymer coated guidewire
US20070249964A1 (en) * 1997-06-04 2007-10-25 Advanced Cardiovascular Systems, Inc. Polymer coated guide wire
US20080146967A1 (en) * 1997-06-04 2008-06-19 Richardson Mark T Polymer coated guidewire
US7455646B2 (en) 1997-06-04 2008-11-25 Advanced Cardiovascular Systems, Inc. Polymer coated guide wire
US6106485A (en) * 1997-11-18 2000-08-22 Advanced Cardivascular Systems, Inc. Guidewire with shaped intermediate portion
US6296616B1 (en) 1997-11-18 2001-10-02 Advanced Cardiovascular Systems, Inc. Guidewire with shaped intermediate portion
US20040089969A1 (en) * 2000-08-03 2004-05-13 Scimed Life Systems, Inc. Reinforced catheter and method of manufacture
US6669886B1 (en) 2000-08-03 2003-12-30 Scimed Life Systems, Inc. Reinforced catheter and method of manufacture
US8377035B2 (en) 2003-01-17 2013-02-19 Boston Scientific Scimed, Inc. Unbalanced reinforcement members for medical device
US7846171B2 (en) 2004-05-27 2010-12-07 C.R. Bard, Inc. Method and apparatus for delivering a prosthetic fabric into a patient
US8221440B2 (en) 2004-05-27 2012-07-17 C.R. Bard, Inc. Method and apparatus for delivering a prosthetic fabric into a patient
US20060161135A1 (en) * 2005-01-18 2006-07-20 Vanderwoude Brian J Ribbed catheter
US20090030277A1 (en) * 2005-04-05 2009-01-29 Ryuhei Fujimoto Endoscope Insertion Portion and Endoscope System
WO2009004876A1 (en) * 2007-06-29 2009-01-08 Piolax Medical Devices, Inc. Guide wire
US7841994B2 (en) * 2007-11-02 2010-11-30 Boston Scientific Scimed, Inc. Medical device for crossing an occlusion in a vessel
US20090118644A1 (en) * 2007-11-02 2009-05-07 Boston Scientific Scimed, Inc. Medical device for crossing an occlusion in a vessel
JP2014018673A (en) * 2012-07-20 2014-02-03 Depuy Synthes Products Llc Guide wire with highly flexible tip
CN103566457A (en) * 2012-07-20 2014-02-12 德普伊新特斯产品有限责任公司 Guidewire with highly flexible tip
CN103566457B (en) * 2012-07-20 2018-03-30 德普伊新特斯产品有限责任公司 Highly flexible guide wire having a tip

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