Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS3528406 A
Publication typeGrant
Publication dateSep 15, 1970
Filing dateOct 29, 1965
Priority dateOct 29, 1965
Publication numberUS 3528406 A, US 3528406A, US-A-3528406, US3528406 A, US3528406A
InventorsJeckel Norman C, Jeckel Ronald N, Roach Charles C
Original AssigneeUs Catheter & Instr Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Flexible spring guide tip for insertion of vascular catheters
US 3528406 A
Images(1)
Previous page
Next page
Description  (OCR text may contain errors)

United States Patent Inventors Norman C. Jeckel;

Ronald N. Jeck el; Charles C. Roach, Glens Falls, New York Appl. No. 505,610

Filed Oct. 29, 1965 Patented Sept. 15, 1970 Assignee United States Catheter & Instrument Corporation Glens Falls, New York a corporation of Delaware FLEXIBLE SPRING GUIDE TIP FOR INSERTION OF VASCULAR CATHETERS 3 Claims, 2 Drawing Figs.

US. Cl. 128/341,128/348 Int. Cl A61b 5/02,

A6lm 23/00 Field ofSearch l28/2.05,

[56] References Cited UNITED STATES PATENTS 707,775 8/1902 Harris 128/349 812,020 2/ 1906 Crippen 27/24 2,118,631 5/1938 Wappler 128/349 2,684,069 7/ 1954 Donaldson et a1. 128/303 OTHER REFERENCES U. S.C.l. Catalogue, 1964, pages 29, 32 and 33 relied on.

Primary Examiner-Dalton L. Truluck Attorney-W. Saxton Seward ABSTRACT: A spring guide for use in connection with the insertion of cardiac or vascular catheters having internal reinforcement throughout its length, the reinforcing means having reduced stiffening effect within .the distal tip to provide relatively greater flexibility of the guide in the tip portion thereof.

Patented Sept. 15, 1970 3,528,406

,, ,v mm

IN VE N TOR NORMAN c. JEcKEL' RONALD 1v. JECKEL CHARLES c ROACH FLEXIBLE SPRING GUIDE TIP FOR INSERTION OF VASCULAR CATHETERS This invention relates to new and useful improvements in spring guides used primarily in vascular manipulations and more particularly seeks to provide a spring guide that has reinforced strength throughout the proximal portion but flexibility within the distal tip.

The marked advances in cardiac and vascular surgery in the past few years and other medical problems that require diagnostic study of the vascular beds and systems has led to the extensive use of cardiac or vascular catheters, particularly for retrograde aortography and angiocardiography, and less often to take blood samples, determine oxygen content, infuse medicaments, etc. at internal sites and various other uses that require the insertion of a relatively long catheter to an internal site that requires movement of the catheter into branch vessels at sharp angles relative to the feeding direction of the catheter.

The most common method for insertion of such catheters is the percutaneous technique described in 1953 by Sven Ivar Seldinger. In this procedure a local anaesthesia is ,administered and a skin puncture made at a small angle to the vessel (e.g. femoral in the leg or branchial in the arm) with an obturator positioned within a cannula. Once the unit has been properly located in the vessel, the obturator is removed and the flexible spring guide then inserted through the cannula into the vessel for a short distance. Pressure is then applied to hold the spring guide in place while the cannula is withdrawn. The spring guide is then fed into the vessel generally under the fluoroscope until the desired point is reached which may or may not require considerable manipulation if there are branched vessels or curves concerned. Thereafter the catheter is passed over the flexible spring guide and fed into the desired position and the spring guide then withdrawn from the catheter unless both are needed for cooperative manipulation purposes.

There are presently available spring guides made from stainless steel having outside diameter sizes from about 0.025" (pediatric), up to 0.054" and from about 100 to 150 cm. long which are used with correspondingly shorter catheters. The guides consist of an outer case which is a closely wound stainless steel spring to form a continuous coil surrounding an inner bore which is then sealed at the distal end with a rounded tip or cap. A straight core wire is placed within the coil bore and is either freely movable within the guide or fixed within the guide about 3 cm. short of the distal tip which is left flexible for manipulation purposes.

Thus the distal tip has the consistency of the proximal portion or complete lack of reinforcement. In some instances, an 0.014 wire has been braided over with a finer wire with the braid passing about 3 cm. beyond the primary wire and the entire unit placed within the spring guide and secured at both ends within the braided extension being with the tip portion of the spring guide. This is obviously complex and expensive, and

in any event, cannot be accomplished in smaller sizes such as 0.035 or 0.0025 OD.

Therefore, it is an object of this invention to provide a spring guide, the distal end of which has flexibility and strength intermediate to that of the proximal body portion of the spring guide.

We have found the wire diameter of the reinforcing core wire can be reduced in the distal tip relative to that in the proximal body portion to satisfactorily accomplish the above object.

With the above and other objects and features in view, the nature of which will be more apparent, the invention will be more fully understood by reference to the drawings the accompanying detailed description and the appended claims.

In the drawings:

FIG. 1 is a longitudinal cross-section taken through a spring guide constructed in accordance with this invention; and

FIG. 2 is a similar longitudinal cross-section through a modifie Spring g i This invention as illustrated shows two modicfications of spring guides constructed in accordance with this invention but obviously others will fall within the scope thereof.

A conventional spring guide 5 is shown in FIGS. 1 and 2 made up of continuous contiguous coil 6 with a proximal portion 7 and a distal tip 8. These represent .035 OD. spring guides, but the same principle is applicable to smaller sizes or larger sizes that may be made. As shown in FIG. I the inner core wire has two portions, the proximal heavy portion 9 and the distal lighter portion 10 which coincides with the distal tip of the spring guide. Portion 9 is about .014" and portion 10 is about .010".

As shown in FIG. 2 there are two core wires, wire 11 being approximately .006 and extending throughout the entire length of the spring guide and wire 12 being about .010" but extending only up to the beginning of the distal tip 8 of the spring guide. All three of the inner wires disclosed herein are fixed at the proximal end of the spring guide and wires 10 and 1 1 are fixed at the distal end thereof whereas wire 12 is fixed at the proximal end of the distal tip. Thus in both modifications there is provided an intermediate reinforcement and flexibility of the distal tip of the spring guide.

In the examples shown, both the spring guides and the inner core wires are stainless steel but the same principles are obviously applicable to any of the various materials from which a spring guide may be made. p I va ri ods chaii g e s; modifications and ramifications will, of course, be obvious to those skilled in the art and are considered to be within the scope of the appended claims hereto.

having a proximal portion, a flexible distal tip portion and a wire core extending throughout the entire length of both said 1 portions and fixed at the respective ends of said spring guide,

said wire core having a reduced cross-section within said distal tip portion and consisting of a first wire within said proximal portion and a second wire within said proximal portion and said distal tip.

ing the full length of the coil spring guide and a second elongated rod-like member of shorter length than said first member extending only through said proximal portion, said second member being substantially thicker in cross-section than said first member.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3612058 *Apr 17, 1968Oct 12, 1971Electro Catheter CorpCatheter stylets
US3731671 *Oct 21, 1971May 8, 1973Cordis CorpLow-friction catheter guide
US3837347 *Apr 20, 1972Sep 24, 1974Electro Catheter CorpInflatable balloon-type pacing probe
US3906938 *Sep 3, 1974Sep 23, 1975Lake Region Manufacturing CompCoil spring wire guide
US3973556 *Jun 20, 1975Aug 10, 1976Lake Region Manufacturing Company, Inc.Smoothened coil spring wire guide
US4080706 *Nov 4, 1976Mar 28, 1978Medrad, Inc.Method of manufacturing catheter guidewire
US4659328 *Mar 12, 1984Apr 21, 1987Biosearch Medical Products, Inc.For stiffening a pliable infusion tube
US4757827 *Feb 17, 1987Jul 19, 1988Versaflex Delivery Systems Inc.Steerable guidewire with deflectable tip
US4779628 *Jun 12, 1987Oct 25, 1988Medrad, Inc.Guidewire assembly having moveable core and low profile safety wire
US4787399 *Jul 1, 1987Nov 29, 1988Sarcem S.A.Remote controlled catheter guide
US4798598 *Apr 28, 1987Jan 17, 1989Sarcem S.A.Guide for a catheter
US4813434 *Mar 31, 1988Mar 21, 1989Medtronic Versaflex, Inc.Steerable guidewire with deflectable tip
US4815478 *Mar 31, 1988Mar 28, 1989Medtronic Versaflex, Inc.Steerable guidewire with deflectable tip
US4830023 *Nov 27, 1987May 16, 1989Medi-Tech, IncorporatedMedical guidewire
US4886067 *Jan 3, 1989Dec 12, 1989C. R. Bard, Inc.Steerable guidewire with soft adjustable tip
US4917102 *Sep 14, 1988Apr 17, 1990Advanced Cardiovascular Systems, Inc.Guidewire assembly with steerable adjustable tip
US4925445 *Feb 9, 1989May 15, 1990Fuji Terumo Co., Ltd.Elastic metallic alloy
US4934380 *Nov 23, 1988Jun 19, 1990Boston Scientific CorporationMedical guidewire
US4940062 *May 26, 1988Jul 10, 1990Advanced Cardiovascular Systems, Inc.Guiding member with deflectable tip
US4947864 *Feb 22, 1990Aug 14, 1990Schneider (U.S.A.), Inc. A Pfizer CompanyGuidewire exchange catheter
US4984581 *Oct 12, 1988Jan 15, 1991Flexmedics CorporationFlexible guide having two-way shape memory alloy
US5059176 *Dec 21, 1989Oct 22, 1991Winters R EdwardVascular system steerable guidewire with inflatable balloon
US5168864 *Sep 26, 1991Dec 8, 1992Clarus Medical Systems, Inc.Deflectable endoscope
US5176149 *Dec 27, 1991Jan 5, 1993Nivarox-Far S.A.Catheter guide support
US5195968 *Jul 17, 1992Mar 23, 1993Ingemar LundquistCatheter steering mechanism
US5207229 *Oct 1, 1990May 4, 1993Advanced Biomedical Devices, Inc.Flexibility steerable guidewire with inflatable balloon
US5254088 *Dec 16, 1992Oct 19, 1993Ep Technologies, Inc.Catheter steering mechanism
US5295493 *Nov 10, 1992Mar 22, 1994Interventional Technologies, Inc.Anatomical guide wire
US5336182 *Jul 30, 1993Aug 9, 1994Ep Technologies, Inc.Catheter steering mechanism
US5345945 *Dec 25, 1993Sep 13, 1994Baxter International Inc.Dual coil guidewire with radiopaque distal tip
US5377690 *Feb 9, 1993Jan 3, 1995C. R. Bard, Inc.Guidewire with round forming wire
US5395327 *Jul 30, 1993Mar 7, 1995Ep Technologies, Inc.Catheter steering mechanism
US5396902 *May 28, 1993Mar 14, 1995Medtronic, Inc.Steerable stylet and manipulative handle assembly
US5402799 *Jun 29, 1993Apr 4, 1995Cordis CorporationFor use with a medical device catheter
US5409015 *May 11, 1993Apr 25, 1995Target Therapeutics, Inc.Deformable tip super elastic guidewire
US5488959 *Dec 27, 1993Feb 6, 1996Cordis CorporationMedical guidewire and welding process
US5531686 *Dec 23, 1994Jul 2, 1996Ep Technologies, Inc.Catheter steering mechanism
US5545200 *Nov 22, 1994Aug 13, 1996Medtronic CardiorhythmSteerable electrophysiology catheter
US5605162 *Sep 1, 1993Feb 25, 1997Advanced Cardiovascular Systems, Inc.Method for using a variable stiffness guidewire
US5636642 *Apr 25, 1995Jun 10, 1997Target Therapeutics, Inc.Deformable tip super elastic guidewire
US5662119 *Apr 21, 1995Sep 2, 1997Medtronic Inc.Steerable stylet and manipulative handle assembly
US5673707 *Sep 23, 1994Oct 7, 1997Boston Scientific CorporationEnhanced performance guidewire
US5695499 *Oct 21, 1996Dec 9, 1997Schneider (Usa) Inc.Medical device supported by spirally wound wire
US5749837 *Aug 1, 1996May 12, 1998Target Therapeutics, Inc.Enhanced lubricity guidewire
US5769796 *Jan 22, 1997Jun 23, 1998Target Therapeutics, Inc.Super-elastic composite guidewire
US5772609 *Jun 28, 1996Jun 30, 1998Target Therapeutics, Inc.Guidewire with variable flexibility due to polymeric coatings
US5830155 *Oct 27, 1995Nov 3, 1998Cordis CorporationGuidewire assembly
US5836892 *Oct 30, 1995Nov 17, 1998Cordis CorporationGuidewire with radiopaque markers
US5873842 *Jun 26, 1997Feb 23, 1999Medtronic, Inc.Steerable stylet and manipulative handle assembly
US5951568 *Mar 19, 1998Sep 14, 1999Schatz; Richard A.Over the wire single operator catheter with wire stabilizer
US5957903 *Nov 25, 1997Sep 28, 1999Advanced Cardiovascular Systems, Inc.Variable stiffness guidewire
US5987344 *Aug 27, 1997Nov 16, 1999Medtronic, Inc.Handle for catheter assembly with multifunction wire
US6033378 *Mar 27, 1997Mar 7, 2000Ep Technologies, Inc.Catheter steering mechanism
US6139510 *May 11, 1994Oct 31, 2000Target Therapeutics Inc.An elongated, flexible alloy wire core coated with a lubricious polymeric material and a tie layer disposed between; a surgical device for use in a catheter, accessing a targeted site in a lumen system
US6156027 *Aug 25, 1999Dec 5, 2000Medtronic, Inc.Handle for catheter assembly with multifunction wire
US6169916Aug 27, 1999Jan 2, 2001Medtronic Inc.Electrophysiology catheter with multifunctional wire and method for making
US7883474Apr 30, 1996Feb 8, 2011Target Therapeutics, Inc.Composite braided guidewire
US8002763Aug 24, 2010Aug 23, 2011Medtronic Vascular, Inc.Catheter flushing mandrel
US20090234184 *Mar 16, 2009Sep 17, 2009Fujifilm CorporationEndoscope
EP0132387A2 *Jul 19, 1984Jan 30, 1985Cook IncorporatedCatheter wire guide with movable mandril
EP0142330A2 *Nov 8, 1984May 22, 1985Advanced Cardiovascular Systems, Inc.Guide wire for catheters
EP0200919A1 *Apr 2, 1986Nov 12, 1986ANGIOMED AktiengesellschaftGuide wire
EP0247371A1 *Apr 28, 1987Dec 2, 1987Sarcem SaCatheter guide
EP0254885A1 *Jun 29, 1987Feb 3, 1988Sarcem SaRemote controlled catheter guide
WO1984004686A1 *May 14, 1984Dec 6, 1984Rene GilliardProbe head
WO1989006985A1 *Jan 27, 1989Aug 10, 1989Advanced Biomedical Devices InSteerable guidewire for vascular system
WO2009131750A1 *Mar 4, 2009Oct 29, 2009Medtronic Vascular Inc.Catheter flushing mandrel
Classifications
U.S. Classification600/585, 604/95.4, 606/108
International ClassificationA61B5/02, A61M23/00, A61M25/09
Cooperative ClassificationA61M25/09033
European ClassificationA61M25/09B2