|Publication number||US3528406 A|
|Publication date||15 Sep 1970|
|Filing date||29 Oct 1965|
|Priority date||29 Oct 1965|
|Publication number||US 3528406 A, US 3528406A, US-A-3528406, US3528406 A, US3528406A|
|Inventors||Jeckel Norman C, Jeckel Ronald N, Roach Charles C|
|Original Assignee||Us Catheter & Instr Corp|
|Export Citation||BiBTeX, EndNote, RefMan|
|Referenced by (68), Classifications (8)|
|External Links: USPTO, USPTO Assignment, Espacenet|
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,
 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.
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US3612058 *||17 Apr 1968||12 Oct 1971||Electro Catheter Corp||Catheter stylets|
|US3731671 *||21 Oct 1971||8 May 1973||Cordis Corp||Low-friction catheter guide|
|US3837347 *||20 Apr 1972||24 Sep 1974||Electro Catheter Corp||Inflatable balloon-type pacing probe|
|US3906938 *||3 Sep 1974||23 Sep 1975||Lake Region Manufacturing Comp||Coil spring wire guide|
|US3973556 *||20 Jun 1975||10 Aug 1976||Lake Region Manufacturing Company, Inc.||Smoothened coil spring wire guide|
|US4080706 *||4 Nov 1976||28 Mar 1978||Medrad, Inc.||Method of manufacturing catheter guidewire|
|US4659328 *||12 Mar 1984||21 Apr 1987||Biosearch Medical Products, Inc.||Stylet|
|US4757827 *||17 Feb 1987||19 Jul 1988||Versaflex Delivery Systems Inc.||Steerable guidewire with deflectable tip|
|US4779628 *||12 Jun 1987||25 Oct 1988||Medrad, Inc.||Guidewire assembly having moveable core and low profile safety wire|
|US4787399 *||1 Jul 1987||29 Nov 1988||Sarcem S.A.||Remote controlled catheter guide|
|US4798598 *||28 Apr 1987||17 Jan 1989||Sarcem S.A.||Guide for a catheter|
|US4813434 *||31 Mar 1988||21 Mar 1989||Medtronic Versaflex, Inc.||Steerable guidewire with deflectable tip|
|US4815478 *||31 Mar 1988||28 Mar 1989||Medtronic Versaflex, Inc.||Steerable guidewire with deflectable tip|
|US4830023 *||27 Nov 1987||16 May 1989||Medi-Tech, Incorporated||Medical guidewire|
|US4886067 *||3 Jan 1989||12 Dec 1989||C. R. Bard, Inc.||Steerable guidewire with soft adjustable tip|
|US4917102 *||14 Sep 1988||17 Apr 1990||Advanced Cardiovascular Systems, Inc.||Guidewire assembly with steerable adjustable tip|
|US4925445 *||9 Feb 1989||15 May 1990||Fuji Terumo Co., Ltd.||Guide wire for catheter|
|US4934380 *||23 Nov 1988||19 Jun 1990||Boston Scientific Corporation||Medical guidewire|
|US4940062 *||26 May 1988||10 Jul 1990||Advanced Cardiovascular Systems, Inc.||Guiding member with deflectable tip|
|US4947864 *||22 Feb 1990||14 Aug 1990||Schneider (U.S.A.), Inc. A Pfizer Company||Guidewire exchange catheter|
|US4984581 *||12 Oct 1988||15 Jan 1991||Flexmedics Corporation||Flexible guide having two-way shape memory alloy|
|US5059176 *||21 Dec 1989||22 Oct 1991||Winters R Edward||Vascular system steerable guidewire with inflatable balloon|
|US5168864 *||26 Sep 1991||8 Dec 1992||Clarus Medical Systems, Inc.||Deflectable endoscope|
|US5176149 *||27 Dec 1991||5 Jan 1993||Nivarox-Far S.A.||Catheter guide support|
|US5195968 *||17 Jul 1992||23 Mar 1993||Ingemar Lundquist||Catheter steering mechanism|
|US5207229 *||1 Oct 1990||4 May 1993||Advanced Biomedical Devices, Inc.||Flexibility steerable guidewire with inflatable balloon|
|US5254088 *||16 Dec 1992||19 Oct 1993||Ep Technologies, Inc.||Catheter steering mechanism|
|US5295493 *||10 Nov 1992||22 Mar 1994||Interventional Technologies, Inc.||Anatomical guide wire|
|US5336182 *||30 Jul 1993||9 Aug 1994||Ep Technologies, Inc.||Catheter steering mechanism|
|US5345945 *||25 Dec 1993||13 Sep 1994||Baxter International Inc.||Dual coil guidewire with radiopaque distal tip|
|US5377690 *||9 Feb 1993||3 Jan 1995||C. R. Bard, Inc.||Guidewire with round forming wire|
|US5395327 *||30 Jul 1993||7 Mar 1995||Ep Technologies, Inc.||Catheter steering mechanism|
|US5396902 *||28 May 1993||14 Mar 1995||Medtronic, Inc.||Steerable stylet and manipulative handle assembly|
|US5402799 *||29 Jun 1993||4 Apr 1995||Cordis Corporation||Guidewire having flexible floppy tip|
|US5409015 *||11 May 1993||25 Apr 1995||Target Therapeutics, Inc.||Deformable tip super elastic guidewire|
|US5488959 *||27 Dec 1993||6 Feb 1996||Cordis Corporation||Medical guidewire and welding process|
|US5531686 *||23 Dec 1994||2 Jul 1996||Ep Technologies, Inc.||Catheter steering mechanism|
|US5545200 *||22 Nov 1994||13 Aug 1996||Medtronic Cardiorhythm||Steerable electrophysiology catheter|
|US5605162 *||1 Sep 1993||25 Feb 1997||Advanced Cardiovascular Systems, Inc.||Method for using a variable stiffness guidewire|
|US5636642 *||25 Apr 1995||10 Jun 1997||Target Therapeutics, Inc.||Deformable tip super elastic guidewire|
|US5662119 *||21 Apr 1995||2 Sep 1997||Medtronic Inc.||Steerable stylet and manipulative handle assembly|
|US5673707 *||23 Sep 1994||7 Oct 1997||Boston Scientific Corporation||Enhanced performance guidewire|
|US5695499 *||21 Oct 1996||9 Dec 1997||Schneider (Usa) Inc.||Medical device supported by spirally wound wire|
|US5749837 *||1 Aug 1996||12 May 1998||Target Therapeutics, Inc.||Enhanced lubricity guidewire|
|US5769796 *||22 Jan 1997||23 Jun 1998||Target Therapeutics, Inc.||Super-elastic composite guidewire|
|US5772609 *||28 Jun 1996||30 Jun 1998||Target Therapeutics, Inc.||Guidewire with variable flexibility due to polymeric coatings|
|US5830155 *||27 Oct 1995||3 Nov 1998||Cordis Corporation||Guidewire assembly|
|US5836892 *||30 Oct 1995||17 Nov 1998||Cordis Corporation||Guidewire with radiopaque markers|
|US5873842 *||26 Jun 1997||23 Feb 1999||Medtronic, Inc.||Steerable stylet and manipulative handle assembly|
|US5951568 *||19 Mar 1998||14 Sep 1999||Schatz; Richard A.||Over the wire single operator catheter with wire stabilizer|
|US5957903 *||25 Nov 1997||28 Sep 1999||Advanced Cardiovascular Systems, Inc.||Variable stiffness guidewire|
|US5987344 *||27 Aug 1997||16 Nov 1999||Medtronic, Inc.||Handle for catheter assembly with multifunction wire|
|US6033378 *||27 Mar 1997||7 Mar 2000||Ep Technologies, Inc.||Catheter steering mechanism|
|US6139510 *||11 May 1994||31 Oct 2000||Target Therapeutics Inc.||Super elastic alloy guidewire|
|US6156027 *||25 Aug 1999||5 Dec 2000||Medtronic, Inc.||Handle for catheter assembly with multifunction wire|
|US6169916||27 Aug 1999||2 Jan 2001||Medtronic Inc.||Electrophysiology catheter with multifunctional wire and method for making|
|US7883474||30 Apr 1996||8 Feb 2011||Target Therapeutics, Inc.||Composite braided guidewire|
|US8002763||24 Aug 2010||23 Aug 2011||Medtronic Vascular, Inc.||Catheter flushing mandrel|
|US9017246||17 Nov 2011||28 Apr 2015||Boston Scientific Scimed, Inc.||Biliary catheter systems including stabilizing members|
|US20090234184 *||16 Mar 2009||17 Sep 2009||Fujifilm Corporation||Endoscope|
|EP0132387A2 *||19 Jul 1984||30 Jan 1985||Cook Incorporated||Catheter wire guide with movable mandril|
|EP0142330A2 *||8 Nov 1984||22 May 1985||Advanced Cardiovascular Systems, Inc.||Guide wire for catheters|
|EP0200919A1 *||2 Apr 1986||12 Nov 1986||ANGIOMED Aktiengesellschaft||Guide wire|
|EP0247371A1 *||28 Apr 1987||2 Dec 1987||Sarcem Sa||Catheter guide|
|EP0254885A1 *||29 Jun 1987||3 Feb 1988||Sarcem Sa||Remote controlled catheter guide|
|WO1984004686A1 *||14 May 1984||6 Dec 1984||Rene Gilliard||Probe head|
|WO1989006985A1 *||27 Jan 1989||10 Aug 1989||Advanced Biomedical Devices In||Steerable guidewire for vascular system|
|WO2009131750A1 *||4 Mar 2009||29 Oct 2009||Medtronic Vascular Inc.||Catheter flushing mandrel|
|U.S. Classification||600/585, 604/95.4, 606/108|
|International Classification||A61B5/02, A61M23/00, A61M25/09|