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 numberUS3906938 A
Publication typeGrant
Publication dateSep 23, 1975
Filing dateSep 3, 1974
Priority dateSep 3, 1974
Publication numberUS 3906938 A, US 3906938A, US-A-3906938, US3906938 A, US3906938A
InventorsFleischhacker John J
Original AssigneeLake Region Manufacturing Comp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Coil spring wire guide
US 3906938 A
Abstract
A coil spring guide, for use in connection with the insertion of catheters into the vessels of a body, that has a coil spring, and a wire core extending within the coil spring and having a distal end welded to the distal end of the coil spring. The wire core throughout the major portion of its length is cylindrical while the end portion adjacent where the core is welded to the distal end of the coil spring is flattened to in transverse cross section be of a substantially larger dimension in one direction than in a direction at right angles thereto, and as viewed from the edge thereof, along a major part of the length of the flattened portion is of an undulated shape.
Images(1)
Previous page
Next page
Description  (OCR text may contain errors)

[4 1 Sept. 23, 1975 United States Patent [191 Fleischhacker COIL SPRING WIRE GUIDE John J. Fleischhacker, Minnetonka,

Primary Examiner-Dalton L. Truluck [75] Inventor:

Attorney, Agent, or FirmDugger, Johnson & Westman Minn.

[73] Assignee: Lake Region Manufacturing Company, Inc., Chaska, Minn.

Sept. 3, 1974 Appl. No.: 502,617

[57] ABSTRACT A coil spring guide, for use in connection with the insertion of catheters into the vessels of a bod [22] Filed:

y, that has a coil spring, and a wire core extending within the coil spring and having a distal end welded to the distal end of the coil spring. The wire core throughout the m portion of its length is cylindrical while the end ajor portion adjacent where the core is welded to the distal end of the coil spring is flattened to in-transverse cross section be of a substantially larger dimension in one direction than in a direction at right angles thereto, and as viewed from the edge thereof, along a major W SI M n c an m U m a I "N R s um U .mF

N Hod m part of the length of the flattened portion is of an undulated shape.

UNITED STATES PATENTS 128 2.05 128205 E 9 Claims, 7 Drawing Figures k D O 9/1970 Jeckel et al...

COIL'SPRING ,WIRE GUIDE BACKGROUND OF THE INVENTION A coil spring guide for use in connection with the in sertion of catheters into the vessels of a body. I

Prior art'coil spring guides include those such as disclosed in US. Pat. Nos. 3,542,742, 3,521,620, 3,528,406 and 3,547,103. Forsorne uses, the inside diameter of the coil spring is too sm all for having two wires extendinto or through the distalend portion such as disclosed in :the above mentioned patents and the wire core breaks on occasion due to winding of the guide in a coil or usage thereof and the resulting stretching force exerted on the distal end portion thereof. In order to overcome problems such as the above, as well as others, together 'with providing a wire core havingthe' desired-strength and flexibility and be of 'on'e piece construction; this invention has'been made.

SUMMARY OF THE INVENTION A coilspring guide having a coil spring and a wire core having a distal end welded to the distal end of the coil spring, the wire core having the major portion thereof of a cylindr'ical shape and a distal end portion that is undulated. I

BRIEF DESCRIPTION OF THE DRAWINGS FIG. '1 is a longitudinal cross sectional view of the first embodiment of theinvention, the proximal end portion and a longitudinally intermediate part of the guide riot being shown; a 7

FIG. 2 is a transverse cross sectionalview through the tapered part of the wire core and radially adjacent part of the coil spring, said view being generally takenalong the lineand in the direction ofthe arrows 2 --2 of FIG. 1;

FIG. 3 is a transverse cross sectional view, generally taken along theline and in the direction of the arrows 3-3 of FIG. 1, of the flattened part of the wire core;

FIG. is a transverse cross sectional view generally taken along the line and in the direction of the arrows 4 4 of FIG. 1 longitudinally between the flattened part of the wire core and the welding of the coreto the coil spring I I FIG. 5 is a fragmentary longitudinal sectional view of the flattened portion of the wire core to show the generally undulated shape thereof; i 1 I V FIG. 6 is afragmentary longitudinally cross sectional view, generallytakeri along the line and in the direction of the arrows ,6'6 "of FIG. '1, of the distal end portion of the coil spring guide of the second embodiment; and,

FIG, is atransverse'cross sectional view through the flattened end portion of the wire core and coil spring oif the distal eha portion of the eon spring guide of the second embodiment, said'view being generally taken along the line and in the direction of the arrows 77 of FIG. 6.,f

Referring now to FIGS. '1 5, the coil spring guide of the firstembodiment, generally designated A, includes atightly wound coil spring 12 that for many uses is of a length of at least 150 cm. but can be of otherlengths, and preferably is made of stainless steel. The outside diameter of the coil is usually about 0.018 inch to 0.045

inch although it may be of other diameters; while the diameter of the wire of the coil spring usually is in the range of 0.004 to 0.010 inch. Extending within the coil spring is a wire core, generally designated 11. The wire core,which preferably is of stainless steel, includes an axially elongated. cylindrical portion 10 that usually is of a diameter of. about 0.008 inch to 0.022 inch. The distal end of cylindrical portion 12 is integrally joined to the distal end portion of the wire core, the distal end portion of 'thewire core including an axially elongated portion 13 having a major base end integrally joined to the distal end'of cylindrical portion 10 and a minor base end integrally joined to one end of the elongated flattened portion '14. The opposite end of the flattened portion isintegrally joined to one'end of the terminal end portion -15 ofthe wire core. The opposite end ofthe terminal end portion is rigidly attached to the distal end'of the coil spring at 16. The terminal end portion 15 is of an axially elongated cylindrical shape and of substantially the same diameter as the minor base of the frusto conidal portion 13. The flattened portion throughout substantially the entirelength thereof, i.e'., for the length G, is of a' nearly rectangular transverse cross section such as indicated in FIG. 3. That is, along length G, portion 14 has generally flat, opposed, generally planar surfaces that are each of a transverse dimension X and slightly rounded edge surfaces 14d that are "each of a dimension Y at generally right angles to surfaces 14c. The dimension X is many times greater than dimension Y, preferably about 3 to 5 times as great. The opposite ends of portion 14, part of each side of thepart indicated by dimension G, is gradually sloped to form the transition to the cross sectional shape of the adjacent end or portions 13 and 15, respectively.

Additionally, the flattened portion 14 along substantially the entire length, or at least a major portion of the length of G, is of a generally undulated shape when looking toward one edge 14d thereof, see FIG. 5. Thus portion 14 is bent about transverse axes parallel to the width dimension X (axis perpendicular to the direction of elongation of portion 14) to provide sections 14a I that extend predominately in one direction and sections 14b that extend predominately in a second direction whereby each'set of joined sections 14a, 14b are generally V shaped when viewed from the edge of portion 14. Thus the linear length G of the flatten portion is considerably less than the total length of the flatten portion that extends through dimension G.

The second embodiment of the invention, generally designated B, is of the sarne construction as the first embodiment except for portions 14, 15. Rather the flattened portion 2l for the wire core of the second embodiment is of the same length as the combined lengths of portions 14, 1 5, is welded at 16 to the coil spring 12 of the second embodiment, and is undulated in the same manner as portion 14. Usually the first embodiment is preferred since the cylindrical end portion 15 is easier to weld to the coil spring than a generally rectangular portiori 21 that has a transverse width many times greater than its thickness. I I

In making the wire core, preferably the wire core blank is one continuous length of metal that is ground down, to a cylindrical shape portion of a sufficient length, that when bent to form undulated portions 14a, 14c, provides portion 14 of a length F joined to the minor base of portion 13 plus the length T of the por tion 15, and is-of the same diameter as portion 15. The last mentioned cylindricalportion is then shaped to provide a straight, elongated planar flattened portion which is then bent to provide portion 14 having the undulations. Thus the wire core is a continuous, unitary piece of metal having no junctions therein, but that is rigidly attached at the distal end of the coil spring, and may or may not have its proximal end welded to the proximal end of the coil spring.

The coil spring and wire core in a relaxed condition are straight, i.e., having the undulations but no permanent set in either so that neither one or the other or both of them tend to assume a predetermined curved configuration. If the wire core along portion 14 were of the same cross sectional configuration as portion 15 and were of a diameter of about 0.006 inch, when the distal tip of the guide hits an obstruction in the vessel, the distal end portion bends and the distal end portion of the guide frequently will not snap back completely. On the other hand, if the wire core along portion 14 were the same cross sectional configuration as portion 15 and were of a diameter of about 0.004 inch, the guide distal end after hitting an obstruction in the vessel, for example a branch blood vessel, if bent, would snap back; however, the distal end portion of the wire core would not be strong enough for safety purposes. A coil spring guide having such a 0.004 inch cylindrical portion has the flexibility but not the desired strength, whereas the coil spring guide having the 0.006 inch cylindrical shape just previously referred to has the strength but not the desired flexibility and memory. With the present invention, portion 14, which has a transverse width X many times greater than the transverse thickness Y, if relatively flexible insofar as bending about axes parallel to surfaces 140, but relatively stiff insofar as bending about axes perpendicular to surfaces 14c. However, if the guide is being inserted in a blood vessel and due to the bending of the blood vessel is urged to bend in a direction of the greatest stiffness of portion 14, due to the length of the wire core, the core will twist sufficiently that portion 14 bends about axes generally parallel to surface 14c. 4

Due to the provision of the undulations in portion 14, when the spring guide A or B is wound in a coil, portion 14 elongates sufficiently to prevent breakage of the wire core, which happens on occasions when no undulations are provided in the wire core. Also, due to the undulations, portion 14 can elongate (stretch in length) sufficiently during usage that it is much less likely to break than a wire core that does not have such undulations. During the stretching, the angles formed by the adjacent joined sections 14a, 14b increases, i.e., the effective length of portion 14 increases but the actual length of wire forming portion does not increase.

As an example of the invention but not otherwise as a limitation thereon, the outside diameter of coil 12 may be 0.018 inch to 0.045 inch, the wire coil 12 of a diameter of about 0.004 inch to 0.010 inch, portion of a diameter of about 0.008 inch to 0.022 inch, portion 13 of a length of about 2.5 cm. or longer, portion 14 in a relaxed undulated condition of a length of about 3.5 cm., portion 15 of a diameter of about 0.006 inch and a length of about one-eighth inch to threesixteenths inch, and portion 14 having an X dimension of about 0.010 inch and a Y dimension of about 0.0025

inch.

The coil spring guide of this invention is used for inserting catheters in a body vessel, and as the use of spring guides has been described in the prior art, for example, U.S. Pat. No. 3,528,406, Col. 1, lines -38, a

description of the use thereof will not be further set forth.

What is claimed is:

1. A vascular coil spring guide comprising an elongated coil spring having a distal end portion that has a distal end and an elongated wire core extending within the coil spring that has an elongated distal end portion within the coil spring distal end portion and a distal end, said wire core distal end portion having a plurality of undulations that are bent about axes that are generally perpendicular to the direction of elongation, said distal ends being fixedly secured to one another.

2. The apparatus of claim 1 further characterized in that the wire core distal end portion includes an elongated flatten portion that is generally rectangular in transverse cross section.

3. The apparatus of claim 2 further characterized in that said flatten portion has the wire core distal end.

4. The apparatus of claim 2 further characterized in that said wire core has a cylindrical portion that has one end integrally joined to the flatten portion and an opposite end, said opposite end comprising the wire core distal end.

5. The apparatus of claim 2 further characterized in that said wire core has a generally cylindrical shaped, elongated portion that has a distal end integrally joined to the wire core distal end portion and that is of a larger transverse cross sectional area than the maximum transverse cross sectional area of wire core distal end portion at a location substantially spaced from said cylindrical shaped, elongated portion.

6. The apparatus of claim 2 further characterized in that the wire core is a continuous length of unitary formed metal.

7. The apparatus of claim 2 further characterized in that the transverse width of the flatten portion is many times greater than the transverse thickness thereof and said distal ends are secured by being welded to one another.

8. A vascular coil spring guide having an elongated metal coil spring that has a first portion, and a distal end portion that has a distal end and is joined to the coil first portion, and an elongated metal wire core within the coil spring that has an elongated first portion within the coil spring first portion, and a distal end portion within the coil spring distal end portion that has a distal end, the wire core distal end portion having a second portion that is joined to the wire core first portion and is of a reduced transverse cross sectional area in a direction away from the wire core first portion, and an elongated flatten portion joined to said second portion to extend away therefrom in a direction away from the wire core first portion, said flatten portion being bent about a plurality of axes generally parallel to the direction of elongation of the flatten portion to provide a plurality of undulations, and a weld joining the distal ends.

9. The apparatus of claim 8 further characterized in that said wire core is a continuous single unitary integral length of wire, and that the transverse width dimension of the flatten portion is many times greater than the thickness thereof, said axes being generally parallel to said transverse width dimension, and that the maximum cross sectional area of the flatten portion is less than the wire core first portion that is adjacent said second portion.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3452742 *Jun 29, 1966Jul 1, 1969Us Catheter & Instr CorpControlled vascular curvable spring guide
US3521620 *Oct 30, 1967Jul 28, 1970Cook William AVascular coil spring guide with bendable tip
US3528406 *Oct 29, 1965Sep 15, 1970Us Catheter & Instr CorpFlexible spring guide tip for insertion of vascular catheters
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4003369 *Apr 22, 1975Jan 18, 1977Medrad, Inc.Angiographic guidewire with safety core wire
US4080706 *Nov 4, 1976Mar 28, 1978Medrad, Inc.Method of manufacturing catheter guidewire
US4577637 *Jul 13, 1984Mar 25, 1986Argon Medical Corp.Flexible metal radiopaque indicator and plugs for catheters
US4634042 *Apr 10, 1984Jan 6, 1987Cordis CorporationMethod of joining refractory metals to lower melting dissimilar metals
US4676249 *May 19, 1986Jun 30, 1987Cordis CorporationMulti-mode guidewire
US4724846 *Jan 10, 1986Feb 16, 1988Medrad, Inc.Catheter guide wire assembly
US4757827 *Feb 17, 1987Jul 19, 1988Versaflex Delivery Systems Inc.Steerable guidewire with deflectable tip
US4771778 *Jan 6, 1987Sep 20, 1988Advanced Cardiovascular Systems, Inc.Steerable low profile balloon dilatation catheter
US4796642 *Dec 28, 1987Jan 10, 1989Cordis Leads, Inc.Pacing lead stylet
US4800890 *Dec 26, 1985Jan 31, 1989Cramer Bernhard MSteerable guide wire for catheters
US4811743 *Apr 21, 1987Mar 14, 1989Cordis CorporationCatheter guidewire
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
US4846175 *Dec 17, 1987Jul 11, 1989Erintrud FrimbergerProbe for introduction into the human or animal body, in particular a papillotome
US4854325 *Nov 9, 1987Aug 8, 1989Stevens Robert CReciprocating guidewire method
US4886067 *Jan 3, 1989Dec 12, 1989C. R. Bard, Inc.Steerable guidewire with soft adjustable tip
US4934380 *Nov 23, 1988Jun 19, 1990Boston Scientific CorporationMedical guidewire
US4971490 *Sep 19, 1989Nov 20, 1990National Standard CompanyFlexible guide wire with improved mounting arrangement for coil spring tip
US4984581 *Oct 12, 1988Jan 15, 1991Flexmedics CorporationFlexible guide having two-way shape memory alloy
US5067489 *Oct 26, 1990Nov 26, 1991Flexmedics CorporationFlexible guide with safety tip
US5069217 *Jul 9, 1990Dec 3, 1991Lake Region Manufacturing Co., Inc.Steerable guide wire
US5111829 *Jan 18, 1991May 12, 1992Boston Scientific CorporationSteerable highly elongated guidewire
US5125896 *Oct 10, 1990Jun 30, 1992C. R. Bard, Inc.Steerable electrode catheter
US5171383 *Sep 16, 1991Dec 15, 1992Terumo Kabushiki KaishaTreating elastic alloy so flexibility is sequentially ! increased
US5174302 *Dec 4, 1990Dec 29, 1992Cordis CorporationVariable radiopacity guidewire with spaced highly radiopaque regions
US5207683 *Apr 26, 1991May 4, 1993Cook Pacemaker CorporationApparatus for removing an elongated structure implanted in biological tissue
US5267574 *Sep 10, 1992Dec 7, 1993Cordis CorporationGuidewire with spring and a heat shrinkable connection
US5282478 *Aug 21, 1991Feb 1, 1994Baxter International, Inc.Guidewire extension system with coil connectors
US5295493 *Nov 10, 1992Mar 22, 1994Interventional Technologies, Inc.Anatomical guide wire
US5299580 *Oct 9, 1992Apr 5, 1994Scimed Life Systems, Inc.Guidewire with safety ribbon with substantially axially symmetric flexibility
US5315747 *Oct 30, 1992May 31, 1994Pameda N.V.Method of preparing a balloon dilatation catheter
US5377690 *Feb 9, 1993Jan 3, 1995C. R. Bard, Inc.Guidewire with round forming wire
US5402799 *Jun 29, 1993Apr 4, 1995Cordis CorporationFor use with a medical device catheter
US5406960 *Apr 13, 1994Apr 18, 1995Cordis CorporationGuidewire with integral core and marker bands
US5407432 *Oct 26, 1992Apr 18, 1995Pameda N.V.Method of positioning a stent
US5411033 *Dec 14, 1993May 2, 1995Cordis CorporationAtherectomy guidewire
US5413560 *Oct 26, 1992May 9, 1995Pameda N.V.Method of rapid catheter exchange
US5474537 *Mar 9, 1995Dec 12, 1995Pameda N.V.Inflatable shaft catheter
US5488959 *Dec 27, 1993Feb 6, 1996Cordis CorporationMedical guidewire and welding process
US5497783 *May 18, 1994Mar 12, 1996Scimed Life Systems, Inc.For use in medical procedures
US5497785 *Jul 27, 1994Mar 12, 1996Cordis CorporationCatheter advancing guidewire and method for making same
US5507751 *Jun 8, 1994Apr 16, 1996Cook Pacemaker CorporationLocally flexible dilator sheath
US5522874 *Jul 28, 1994Jun 4, 1996Gates; James T.Medical lead having segmented electrode
US5522875 *Jul 28, 1994Jun 4, 1996Medtronic, Inc.Medical electrical lead system having a torque transfer stylet
US5531690 *Oct 21, 1994Jul 2, 1996Cordis CorporationRapid exchange catheter
US5551443 *Jan 21, 1995Sep 3, 1996Conceptus, Inc.Guidewire-type device axially moveable by torque or axial force and methods for use thereof
US5562619 *Oct 19, 1993Oct 8, 1996Boston Scientific CorporationDeflectable catheter
US5673707 *Sep 23, 1994Oct 7, 1997Boston Scientific CorporationEnhanced performance guidewire
US5697936 *May 4, 1995Dec 16, 1997Cook Pacemaker CorporationDevice for removing an elongated structure implanted in biological tissue
US5738667 *Jul 26, 1994Apr 14, 1998Cordis CorporationRapid exchange catheter system
US5807279 *Sep 27, 1996Sep 15, 1998Cordis CorporationGuidewire having radiopaque distal tip
US5865800 *Oct 8, 1996Feb 2, 1999Boston Scientific CorporationDeflectable catheter
US5951568 *Mar 19, 1998Sep 14, 1999Schatz; Richard A.Over the wire single operator catheter with wire stabilizer
US6132388 *Oct 16, 1997Oct 17, 2000Scimed Life Systems, Inc.Guide wire tip
US6167315 *Apr 5, 1999Dec 26, 2000Spectranetics CorporationLead locking device and method
US6324434Dec 4, 2000Nov 27, 2001Spectranetics CorporationLead locking device and method
US6409683Sep 21, 1999Jun 25, 2002Cordis CorporationMedical guidewire with improved coil attachment
US6463927 *Mar 11, 1998Oct 15, 2002Smiths Group PlcMedical tube assemblies
US6475167Sep 7, 2000Nov 5, 2002Scimed Life Systems, Inc.Guide wire tip
US6712826May 17, 2001Mar 30, 2004Cook Vascular IncorporatedApparatus for removing an elongated structure implanted in biological tissue
US7499756Feb 17, 2005Mar 3, 2009SpectraneticsLead locking device and method
US7540865Jul 13, 2005Jun 2, 2009Boston Scientific Scimed, Inc.Medical device
US7637903Jun 21, 2004Dec 29, 2009Cryocor, Inc.Catheter articulation segment with alternating cuts
US7715903 *Aug 21, 2003May 11, 2010Cook IncorporatedGuide wire
US7824345Dec 22, 2003Nov 2, 2010Boston Scientific Scimed, Inc.Medical device with push force limiter
US7841994Nov 2, 2007Nov 30, 2010Boston Scientific Scimed, Inc.Medical device for crossing an occlusion in a vessel
US7850623Oct 27, 2005Dec 14, 2010Boston Scientific Scimed, Inc.Elongate medical device with continuous reinforcement member
US7878984Jul 25, 2003Feb 1, 2011Boston Scientific Scimed, Inc.Medical device for navigation through anatomy and method of making same
US7881809Dec 5, 2006Feb 1, 2011St. Jude Medical, Atrial Fibrillation Division, Inc.Electrophysiology/ablation catheter and remote actuator therefor
US7914466Aug 5, 2003Mar 29, 2011Precision Vascular Systems, Inc.Medical device with collapse-resistant liner and method of making same
US7914467Aug 8, 2007Mar 29, 2011Boston Scientific Scimed, Inc.Tubular member having tapered transition for use in a medical device
US8000764Mar 29, 2007Aug 16, 2011St. Jude Medical, Atrial Fibrillation Division, Inc.Electrophysiology/ablation catheter having second passage
US8022331Jan 15, 2007Sep 20, 2011Boston Scientific Scimed, Inc.Method of making elongated medical devices
US8048004Jul 31, 2007Nov 1, 2011Precision Vascular Systems, Inc.Medical device for navigation through anatomy and method of making same
US8048060Aug 16, 2006Nov 1, 2011Boston Scientific Scimed, Inc.Medical device
US8092444Dec 18, 2009Jan 10, 2012Boston Scientific Scimed, Inc.Catheter articulation segment with alternating cuts
US8105246Aug 3, 2007Jan 31, 2012Boston Scientific Scimed, Inc.Elongate medical device having enhanced torque and methods thereof
US8128636Feb 9, 2007Mar 6, 2012Cook Medical Technologies LlcDevice and method for removing lumenless leads
US8137293Nov 17, 2009Mar 20, 2012Boston Scientific Scimed, Inc.Guidewires including a porous nickel-titanium alloy
US8172774Mar 20, 2008May 8, 2012Terumo Kabushiki KaishaGuide wire
US8182465May 21, 2009May 22, 2012Boston Scientific Scimed, Inc.Medical device
US8231551Dec 13, 2010Jul 31, 2012Boston Scientific Scimed, Inc.Elongate medical device with continuous reinforcement member
US8257279Jul 31, 2007Sep 4, 2012Boston Scientific Scimed, Inc.Medical device for navigation through anatomy and method of making same
US8376961Apr 7, 2008Feb 19, 2013Boston Scientific Scimed, Inc.Micromachined composite guidewire structure with anisotropic bending properties
US8377035Jan 17, 2003Feb 19, 2013Boston Scientific Scimed, Inc.Unbalanced reinforcement members for medical device
US8409114Aug 2, 2007Apr 2, 2013Boston Scientific Scimed, Inc.Composite elongate medical device including distal tubular member
US8428747Jun 25, 2004Apr 23, 2013The Spectranetics Corp.Lead locking device and method
US8449526Dec 6, 2007May 28, 2013Boston Scientific Scimed, Inc.Torqueable soft tip medical device and method of usage
US8535243Sep 10, 2008Sep 17, 2013Boston Scientific Scimed, Inc.Medical devices and tapered tubular members for use in medical devices
US8551020Sep 13, 2007Oct 8, 2013Boston Scientific Scimed, Inc.Crossing guidewire
US8551021Mar 31, 2011Oct 8, 2013Boston Scientific Scimed, Inc.Guidewire with an improved flexural rigidity profile
US8556914Dec 15, 2006Oct 15, 2013Boston Scientific Scimed, Inc.Medical device including structure for crossing an occlusion in a vessel
US8636716May 22, 2012Jan 28, 2014Boston Scientific Scimed, Inc.Medical device
US8784337Oct 8, 2013Jul 22, 2014Boston Scientific Scimed, Inc.Catheter with an improved flexural rigidity profile
US8795202Feb 3, 2012Aug 5, 2014Boston Scientific Scimed, Inc.Guidewires and methods for making and using the same
US8795254Dec 10, 2009Aug 5, 2014Boston Scientific Scimed, Inc.Medical devices with a slotted tubular member having improved stress distribution
USRE36628 *Oct 16, 1997Mar 28, 2000Terumo Kabushiki KaishaMethod of manufacturing a differentially heat treated catheter guide wire
USRE36764 *Jun 7, 1995Jul 4, 2000Nadim M. ZaccaExpandable tip atherectomy method and apparatus
DE3516052A1 *May 4, 1985Nov 13, 1986Braun Melsungen AgFuehrungsteil
EP0381810A1 *Aug 16, 1989Aug 16, 1990Advanced Cardiovascular Systems, Inc.Catheter tip attitude controlling guide wire
EP0832664A2Sep 26, 1997Apr 1, 1998Cordis CorporationGuidewire having radiopaque distal tip
EP1685870A1Jan 25, 2006Aug 2, 2006Cordis CorporationGuidewire with superelastic core
WO1990005557A1 *Nov 17, 1989May 31, 1990Boston Scient CorpMedical guidewire
WO2004075965A1 *Feb 24, 2004Sep 10, 2004Scimed Life Systems IncIntracorporal medical device having an articulating section
Classifications
U.S. Classification600/585, 604/170.1
International ClassificationA61M25/00, A61M25/09
Cooperative ClassificationA61M25/09033, A61M2025/09083
European ClassificationA61M25/09B2