US3631848A - Extensible catheter - Google Patents

Extensible catheter Download PDF

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Publication number
US3631848A
US3631848A US3631848DA US3631848A US 3631848 A US3631848 A US 3631848A US 3631848D A US3631848D A US 3631848DA US 3631848 A US3631848 A US 3631848A
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Grant
Patent type
Prior art keywords
catheter
distal end
extension
lumen
proximal end
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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
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Inventor
Wolf F Muller
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United States Catheter and Instrument Corp
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United States Catheter and Instrument 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
    • A61M25/0067Catheters; Hollow probes characterised by the distal end, e.g. tips
    • A61M25/0068Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure
    • 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
    • A61M25/0021Catheters; Hollow probes characterised by the form of the tubing
    • 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
    • A61M25/0905Guide wires extendable, e.g. mechanisms for extension
    • 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
    • A61M25/0067Catheters; Hollow probes characterised by the distal end, e.g. tips
    • A61M25/0074Dynamic characteristics of the catheter tip, e.g. openable, closable, expandable or deformable

Abstract

A flexible cardiac or vascular catheter provided at its distal end with a smaller extensible and retractable flexible tubular extension particularly adapted to reach normally inaccessible treatment locations in vessels or branches thereof, the extension being movable axially of the catheter by means of a control wire the proximal end of which projects from the proximal end of the catheter.

Description

United States Patent [72] lnventor Wolf F. Muller 2,826,197 3/1958 Leonard 128/227 Southampton, N.Y. 2,862,498 12/ 1958 Weekes.. 128/351 [21] Appl. No. 757,365 3,081,770 3/1963 Hunter 128/350 X [22] Filed Sept. 4,1968 3,220,411 11/1965 Czomy 128/214.4 [45] Patented Jan. 4, 1972 3,344,791 10/1967 Foderick 128/349 [73] Assignee United States Catheter & Instrument 3,470,876 10/ 1969 Barchilon 128/348 Corporation FOREIGN PATENTS Falls 340,128 9/1921 Germany 128/349 Primary Examiner-Dalton L. Truluck EXTENSIBLE CATHETER AttorneyW. Saxton Seward 6 Claims, 6 Drawing Figs.

[52] US. Cl l28/2.05 R, 128/348 [51] Int. Cl ABSTRACT: A flexible cardiac or vascular catheter provided [50] Field of Search 1223/2 2 05 at its distal end with a smaller extensible and retractable flexi- 21 2; ble tubular extension particularly adapted to reach normally 356 inaccessible treatment locations in vessels or branches thereof, the extension being movable axially of the catheter by [56] References Cited means of a control wire the proximal end of which projects UNITED STATES PATENTS from the proximal end of the catheter. 837,459 12/1906 Farrington et al. 128/241 EXTENSIBLE CATHETER This invention generally relates to new and usefulimprovements in catheters and particularly seeks to provide a novel cardiac or vascular catheter having an axially adjustable flexible tubular tip extension.

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 anginocardiography, and to take blood samples, determine oxygen content, infuse or inject medicaments 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 or requires the distal end of the catheter to follow a sinuous path as it approaches the internal site.

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 anesthetic is administered and a skin puncture made at a small angle to the vessel (e.g. femoral in the leg or brachial 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 a flexible spring guide is 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 a fluoroscope, to the desired point which may or may not require considerable manipulation if there are branched vessels or curves concerned. Thereafter a catheter is passed over the flexible spring guide and fed into the desired position and the spring guide is then withdrawn from the catheter.

A particularly useful spring guide for these purposes is disclosed and claimed in my copending application for patent Ser. No. 563,927, filed June 29, 1966, now Pat No. 3,452,742. In that form of spring guide predetermined portions of its length may be controllably curved by manipulation of an inner tension wire from its proximal end outside the patient and it may also be curved after a catheter is placed thereover to cause the catheter to curve.

However, there are many conditions where even the great manipulative ability gained through the use of the above type of spring guide is not adequate to enable the distal tip of a catheter to be properly positioned, as where thedesired treatment point is located a substantial distance along a small diameter branch vessel extending at a sharp angle from the vessel into which the catheter is inserted or where the desired point is located a substantial distance along a particularly sinuous portion of the vessel.

This problem is overcome through the use of a catheter constructed in accordance with this invention.

Therefore, an object of this invention is to provide a flexible catheter having anextensible distal end.

Another object of this invention is to provide a catheter of the character stated in which the distal end extension comprises a small diameter flexible tube normally housed completely within the distal end portion of the catheter lumen and is axially or angularly projectable therefrom through a suitably configured catheter tip.

Another object of this invention is to provide a catheter of the character stated in which the distal end extension is projected or retracted from the tip of the catheter by a manipulating wire extending through the full length of the catheter lumen with its proximal end projecting substantially beyond the proximal end of the catheter.

Another object of this invention is to provide a catheter of the character stated in which the manipulating wire isconnected to the extensible tube by a swivel coupling so designed that injection or infusion liquids can pass from the lumen of the catheter into and through the lumen of the tubular extensron.

With these and other objects, the nature of which will be 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 side elevation, partly broken, of a catheter constructed in accordance with this invention and shows the extensible tube in its retracted position;

FIG. 2 is a view similar to FIG. 1, but showing the extensible tube in itsfully projected position;

FIG. 3 is an enlarged fragmentary longitudinal section of the distal end of the catheter and shows the manipulating wire connector and one form of tip that may be used when the extension tube is to be projected axially;

FIG. 4 is a view similar to FIG. 3 but showing a form of tip that may be used when the extension tube is to be projected at an angle to the axis of the catheter.

FIG. 5 is an enlarged fragmentary longitudinal section of the distal end of a catheter modified to provide an integral tip used for the axial projection of the extension tube; and

FIG. 6 is a view similar to FIG. 5 but showing an integral tip used for the angular projection of the extension tube.

Referring to the drawings in detail, the invention as illustrated is embodied in a flexible catheter generally designated 5 having a proximal end 6 and a distal end 7, which may be formed from any suitable material such as (irradiated) polyethylene, nylon or a tetrafluoroethylene resin and which may be of uniform diameter or tapered as indicated in FIGS. 1 and 2 of the drawings. Whatever the material, it should be radiopaque in order that its progress of advance within a vessel and the positioning of its distal end may be observed through the use of a fluoroscope.

In one form of the invention (see FIG. 3) where the catheter is to be provided with an axially projectable tubular extension, the distal end 7 of the catheter is provided with a generally cylindrical rigid tip 8 tightly secured therewithin and having a full length longitudinal duct or lumen 9 of a diameter sufficient to permit the catheter to be applied over a spring guide and to permit a catheter extension tube to be passed therethrough following removal of the spring guide. A flexible catheter extension tube 10, preferably formed from a radiopaque silicone rubber or similar material and having an outside diameter such that is will freely slide within the catheter tip 9, is normally positioned within the distal end portion of the catheter with the distal end of the extension tube in registry with the distal end of the catheter. The extension tube may be of any desired length, but will generally be from 2 to 6 inches long.

The inner or proximal end of the extension tube 10 carries an intemalmetal or rigid plastic dilating ring or annulus 11, having an outside diameter substantially equal to or slightly greater than the diameter of thetip lumen 9, which forces the formation of a rounded shoulder 12 on the extension tube which becomes seated against the proximal end of the tip 8 when the tube is fully projected beyond the tip. The shoulder 12 also prevents the tube 10 from becoming expelled from the distal end of the catheter.

A cylindrical connector generally designated 13 has its distal end turned down to define an externally corrugated stud 14 that is inserted and retained within the proximal end of the extension tube 10 in abutting relation to the annulus II. A heat-shrunk bandor sleeve 144 may be used to secure the extension tube 10 on the stud 14. The stud 14 is provided with an axial recess 15 extending into communication witha radial aperture 16 to permitpassage of liquid from the lumen of the catheter into and through the lumen of'the extension tube-l0.

An extension tube manipulating wire l7 is provided at-its distal end with ahead or pellet l8 securelyfastened thereto and freely fitted with a cylindrical recess 19 formed in the proximal end of the connector 13. That endof the connector is rolled over as at 20 to retain the pellet within the recess 19 while pennitting it and the attached wire 17 to freely swivel or rotate in either direction with respect tothe connector.

The proximal end. of thewire I7, which extends a substantial distance beyond the proximal end of the catheter, carries a manipulating knob 21 which conveniently may be in the form of a small pin vise for ready attachment to and removal from the wire. Thus the wire may be moved in either direction to effeet a corresponding movement of the extension tube 10.

' in FIG. 4 of the drawings the distal end 7 of the catheter is fitted with an internal tip 22 in which one side of the central portion thereof is machined to define a curvilinear passageway 23 for forcing the distal end of the extension tube 10 to project outwardly at an angle with respect to the axis of the tip when the tube is advanced. The extreme distal end poru'on of the tip 22 is provided with an axial bore 24 of sufficient diameter to permit the catheter to be passed over a spring guide and to permit guide to be withdrawn. The passageway 23 is so contoured and proportioned that the extension tube 10 will always follow the passageway rather than the bore 24.

In FIG. of the drawings there is illustrated a modification in which the distal end of a catheter 25 is provided with an integrally formed axially aligned tip 26 of reduced diameter to define a curved inner shoulder 27 against which the shoulder 12 of the extension tube may be seated when the extension tube is fully projected.

This same principle of integral tip formation may be employed where the extension tube 10 is to be projected at an angle to the axis of the catheter and is illustrated in FIG. 6 of the drawings. In this instance the distal end of a catheter 28 is provided with an integrally formed axially aligned tip extension 29 of reduced diameter which defines at its proximal end a curved inner shoulder 30 and which terminates at its extreme distal end in a tip 31 curved to direct the extension tube 10 at the desired angle with respect to the axis of the catheter.

In use, the manipulating wire 17 and its attached extension tube 10 is completely withdrawn from the catheter 5 and the catheter is advanced over a previously inserted spring guide to a position such that the distal end of the catheter approaches, but does not reach, the desired treatment point. Then the spring guide is withdrawn and the tubular extension 10 is reinserted into the catheter and advanced by the wire 17 until its distal end is in registry with the distal end of the catheter, after which the catheter may be rotated or otherwise manipulated as the extension 10 is advanced beyond the distal end of the catheter until its distal end reaches the desired treatment point.

If the treatment is to be simply the rapid injection of a liquid, it makes little or no difference whether or not the tube 10 has been fully extended so that its shoulder 12 seats against the proximal end of the tip 8 to prevent leakage of the injection liquid from the distal end 7 of the catheter per se. However, if the treatment is to be the prolonged lowvolume infusion of a liquid, it is important that the catheter 5 and its extension tube 10 be so adjusted that when the distal end of the extension tube is at the desired treatment point it has been fully extended beyond the distal end 7 of the catheter to firmly seat the shoulder 12 against the proximal endof the tip 8 and thus force all of the infusion liquid to flow through the tube 10 and to prevent any leakage of the infusion liquid from the distal end of the catheter per se.

It is, of course, to be understood that variations in arrangements and proporu'ons of parts may be made within the scope of the appended claims.

I claim:

l. A flexible catheter having a lumen extending its full length, the diameter of the lumen being reduced adjacent its distal end to form a proximally facing annular shoulder, a flexible tubular extension having an outside diameter permitting free axial sliding movement through said reduced diameter lumen, said extension being enlarged adjacent its proximal end to form a distally facing shoulder engageable with the first named shoulder to limit movement of the extension distally with respect to said catheter, the length of said extension from its distal end to its enlarged shoulder being greater than the distance from the distal end of the catheter to the annular shoulder in said lumen filamentary means extending from said tubular extension to and beyond the proximal end of the catheter for effecting sliding movement of said tubular extension relative to said catheter, and a coupling connecting the proximal end of said extension to the distal end of said filamentary means, the lumen of the extension to the distal end of said filamentary means, the lumen of the extension being in communication with the lumen of the catheter proximally of both said shoulders.

2. The catheter of claim 1 in which said filamentary means is a wire carried within said lumen and having its distal end connected to the proximal end of said tubular extension.

3. The catheter of claim 1 in which a rigid internal tip is positioned within the distal end of said lumen and provided with a tube-directing passageway said coupling for said filamentary means having its distal end connected to the proximal end of said tubular extension and its proximal end swivel connected to said means, and in which said means is a wire carried within said lumen and having its distal end swivel connected to said connector.

4. The catheter of claim 1 in which said tubular extension is radiopaque.

5. The catheter of claim 1 in which the first and second shoulders are shaped to form, when engaged, a fiuidtight seal.

6. The catheter of claim 1 in which the catheter is provided, adjacent its distal end with a laterally directed opening from its reduced diameter portion and with associated means for guiding the tubular extension into and through said opening when the extension is moved distally with respect to the catheter.

* i t t

Claims (6)

1. A flexible catheter having a lumen extending its full length, the diameter of the lumen being reduced adjacent its distal end to form a proximally facing annular shoulder, a flexible tubular extension having an outside diameter permitting free axial sliding movement through said reduced diameter lumen, said extension being enlarged adjacent its proximal end to form a distally facing shoulder engageable with the first named shoulder to limit movement of the extension distally with respect to said catheter, the length of said extension from its distal end to its enlarged shoulder being greater than the distance from the distal end of the catheter to the annular shoulder in said lumen filamentary means extending from said tubular extension to and beyond the proximal end of the catheter for effecting sliding movement of said tubular extension relative to said catheter, and a coupling connecting the proximal end of said extension to the distal end of said filamentary means, the lumen of the extension being in communication with the lumen of the catheter proximally of both said shoulders.
2. The catheter of claim 1 in which said filamentary means is a wire carried within said lumen and having its distal end connected to the proximal end of said tubular extension.
3. The catheter of claim 1 in which a rigid internal tip is positioned within the distal end of said lumen and provided with a tube-directing passageway, said coupling for said filamentary means having its distal end connected to the proximal end of said tubular extension and its proximal end Swivel- connected to said means, and in which said means is a wire carried within said lumen and having its distal end swivel-connected to said connector.
4. The catheter of claim 1 in which said tubular extension is radiopaque.
5. The catheter of claim 1 in which the first and second shoulders are shaped to form, when engaged, a fluidtight seal.
6. The catheter of claim 1 in which the catheter is provided, adjacent its distal end with a laterally directed opening from its reduced diameter portion and with associated means for guiding the tubular extension into and through said opening when the extension is moved distally with respect to the catheter.
US3631848A 1968-09-04 1968-09-04 Extensible catheter Expired - Lifetime US3631848A (en)

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Cited By (57)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3687142A (en) * 1970-10-06 1972-08-29 Saul Leibinzohn Catheter
US3754555A (en) * 1971-10-05 1973-08-28 G Schmitt Controllable barbed intracardial electrode
US4029105A (en) * 1975-11-26 1977-06-14 Will Ross, Inc. Tracheostomy and endotracheal units
FR2375857A1 (en) * 1976-12-29 1978-07-28 Kasper Richard vesical remains a probe
US4284081A (en) * 1976-12-29 1981-08-18 Kasper Richard F Urinary retention catheter
DE3030579A1 (en) * 1980-08-13 1982-03-04 Braun Melsungen Ag indwelling catheters
US4676228A (en) * 1985-10-25 1987-06-30 Krasner Jerome L Medical apparatus having inflatable cuffs and a middle expandable section
US4690131A (en) * 1985-05-31 1987-09-01 The United States Of America As Represented By The Department Of Health And Human Services Medical apparatus
US4770653A (en) * 1987-06-25 1988-09-13 Medilase, Inc. Laser angioplasty
US4787884A (en) * 1987-09-01 1988-11-29 Medical Engineering Corporation Ureteral stent guidewire system
US4790809A (en) * 1985-08-29 1988-12-13 Medical Engineering Corporation Ureteral stent
US4820262A (en) * 1985-12-12 1989-04-11 Medical Engineering Corporation Ureteral stent
US4846193A (en) * 1987-09-21 1989-07-11 Advanced Cardiovascular Systems, Inc. Extendable guide wire for vascular procedures
WO1989006985A1 (en) * 1988-01-27 1989-08-10 Advanced Biomedical Devices, Inc. Steerable guidewire for vascular system
US4874371A (en) * 1987-11-05 1989-10-17 Medilase, Inc. Control handle
US4960134A (en) * 1988-11-18 1990-10-02 Webster Wilton W Jr Steerable catheter
US5057092A (en) * 1990-04-04 1991-10-15 Webster Wilton W Jr Braided catheter with low modulus warp
US5059176A (en) * 1989-12-21 1991-10-22 Winters R Edward Vascular system steerable guidewire with inflatable balloon
US5207229A (en) * 1989-12-21 1993-05-04 Advanced Biomedical Devices, Inc. Flexibility steerable guidewire with inflatable balloon
US5271415A (en) * 1992-01-28 1993-12-21 Baxter International Inc. Guidewire extension system
US5282478A (en) * 1991-08-21 1994-02-01 Baxter International, Inc. Guidewire extension system with coil connectors
US5341817A (en) * 1992-12-14 1994-08-30 Cordis Corporation Elongated guidewire for use in dilation procedures
US5377690A (en) * 1993-02-09 1995-01-03 C. R. Bard, Inc. Guidewire with round forming wire
EP0664719A1 (en) * 1992-09-15 1995-08-02 Cardiovascular Imaging Systems, Inc. Catheter tip with a low friction lining
US5562619A (en) * 1993-08-19 1996-10-08 Boston Scientific Corporation Deflectable catheter
EP0746371A1 (en) * 1994-02-24 1996-12-11 Cardiovascular Imaging Systems, Inc. Improved tracking tip for a catheter
US5624379A (en) * 1995-10-13 1997-04-29 G. I. Medical Technologies, Inc. Endoscopic probe with discrete rotatable tip
US5727553A (en) * 1996-03-25 1998-03-17 Saad; Saad A. Catheter with integral electromagnetic location identification device
US6007514A (en) * 1997-09-30 1999-12-28 Nita; Henry Ultrasound system with pathfinding guidewire
US6113579A (en) * 1998-03-04 2000-09-05 Scimed Life Systems, Inc. Catheter tip designs and methods for improved stent crossing
WO1999044666A3 (en) * 1998-03-04 2001-03-08 Scimed Life Systems Inc Catheter tip designs and methods for improved stent crossing
US20040024393A1 (en) * 2002-08-02 2004-02-05 Henry Nita Therapeutic ultrasound system
US20040082905A1 (en) * 2002-10-29 2004-04-29 Image-Guided Neurologics, Inc. Indexing cell delivery catheter
US6911016B2 (en) 2001-08-06 2005-06-28 Scimed Life Systems, Inc. Guidewire extension system
US20060135979A1 (en) * 2004-12-16 2006-06-22 Scimed Life Systems, Inc. Catheter tip to reduce wire lock
US20070021690A1 (en) * 2002-08-26 2007-01-25 Flowcardia, Inc. Ultrasound catheter for disrupting blood vessel obstructions
US20070038158A1 (en) * 2003-04-08 2007-02-15 Flowcardia, Inc. Ultrasound catheter devices and methods
US20070239027A1 (en) * 2006-04-05 2007-10-11 Henry Nita Therapeutic ultrasound system
US20070260172A1 (en) * 1999-02-16 2007-11-08 Henry Nita Pre-shaped therapeutic catheter
US20070276342A1 (en) * 2006-03-28 2007-11-29 Bryant Lin Devices and related methods for treating incontinence
US20080108902A1 (en) * 2006-11-07 2008-05-08 Henry Nita Ultrasound catheter having protective feature against breakage
US20080167602A1 (en) * 2003-11-24 2008-07-10 Flowcardia, Inc. Steerable ultrasound catheter
US20080228111A1 (en) * 2002-08-02 2008-09-18 Flowcardia, Inc. Therapeutic ultrasound system
US20080287804A1 (en) * 2006-11-07 2008-11-20 Henry Nita Ultrasound catheter having improved distal end
US20090216246A1 (en) * 2004-08-26 2009-08-27 Flowcardia, Inc. Ultrasound catheter devices and methods
US7588581B2 (en) 2002-03-26 2009-09-15 Medtronic, Inc. Placement of chronic micro-catheter device and method
US20100022920A1 (en) * 2003-01-14 2010-01-28 Flowcardia, Inc. Ultrasound catheter and methods for making and using same
US20100030186A1 (en) * 2008-07-31 2010-02-04 Boston Scientific Scimed, Inc. Extendable aspiration catheter
US20100317973A1 (en) * 2009-06-12 2010-12-16 Henry Nita Device and method for vascular re-entry
WO2011044217A1 (en) * 2009-10-07 2011-04-14 Boston Scientific Scimed, Inc. Devices for introducing multiple instruments and methods of use
US7993329B2 (en) 2002-08-13 2011-08-09 Cook Medical Technologies Llc ERCP catheter with a removable handle for lithotriptor compatible basket
US8221343B2 (en) 2005-01-20 2012-07-17 Flowcardia, Inc. Vibrational catheter devices and methods for making same
US8641630B2 (en) 2003-09-19 2014-02-04 Flowcardia, Inc. Connector for securing ultrasound catheter to transducer
US8961423B2 (en) 2003-02-26 2015-02-24 Flowcardia, Inc. Ultrasound catheter apparatus
US9198561B2 (en) 2011-01-31 2015-12-01 Boston Scientific Scimed, Inc. Articulation section with locking
US9561345B2 (en) 2013-12-23 2017-02-07 Route 92 Medical, Inc. Methods and systems for treatment of acute ischemic stroke
US9681882B2 (en) 2014-03-21 2017-06-20 Route 92 Medical, Inc. Rapid aspiration thrombectomy system and method

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US837459A (en) * 1905-11-02 1906-12-04 Charles Oliphint Farrington Vaginal irrigator.
DE340128C (en) * 1920-07-15 1921-09-02 Albrecht Meyenberg Dr An apparatus for removing purulent secretions from the urethra
US2826197A (en) * 1953-11-17 1958-03-11 Edith M Leonard Peristaltic therapeutic apparatus
US2862498A (en) * 1957-06-14 1958-12-02 Don J Weekes Endotracheal tube
US3081770A (en) * 1960-09-21 1963-03-19 John M Hunter Surgical instrument
US3220411A (en) * 1962-06-27 1965-11-30 Vasil P Czorny Intravenous catheter placement unit
US3344791A (en) * 1965-02-12 1967-10-03 John W Foderick Bulbous urinary catheter with axial extension means
US3470876A (en) * 1966-09-28 1969-10-07 John Barchilon Dirigible catheter

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US837459A (en) * 1905-11-02 1906-12-04 Charles Oliphint Farrington Vaginal irrigator.
DE340128C (en) * 1920-07-15 1921-09-02 Albrecht Meyenberg Dr An apparatus for removing purulent secretions from the urethra
US2826197A (en) * 1953-11-17 1958-03-11 Edith M Leonard Peristaltic therapeutic apparatus
US2862498A (en) * 1957-06-14 1958-12-02 Don J Weekes Endotracheal tube
US3081770A (en) * 1960-09-21 1963-03-19 John M Hunter Surgical instrument
US3220411A (en) * 1962-06-27 1965-11-30 Vasil P Czorny Intravenous catheter placement unit
US3344791A (en) * 1965-02-12 1967-10-03 John W Foderick Bulbous urinary catheter with axial extension means
US3470876A (en) * 1966-09-28 1969-10-07 John Barchilon Dirigible catheter

Cited By (103)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3687142A (en) * 1970-10-06 1972-08-29 Saul Leibinzohn Catheter
US3754555A (en) * 1971-10-05 1973-08-28 G Schmitt Controllable barbed intracardial electrode
US4029105A (en) * 1975-11-26 1977-06-14 Will Ross, Inc. Tracheostomy and endotracheal units
US4148319A (en) * 1976-12-29 1979-04-10 Kasper Richard F Urinary retention catheter
US4284081A (en) * 1976-12-29 1981-08-18 Kasper Richard F Urinary retention catheter
FR2375857A1 (en) * 1976-12-29 1978-07-28 Kasper Richard vesical remains a probe
DE3030579A1 (en) * 1980-08-13 1982-03-04 Braun Melsungen Ag indwelling catheters
US4690131A (en) * 1985-05-31 1987-09-01 The United States Of America As Represented By The Department Of Health And Human Services Medical apparatus
US4790809A (en) * 1985-08-29 1988-12-13 Medical Engineering Corporation Ureteral stent
US4676228A (en) * 1985-10-25 1987-06-30 Krasner Jerome L Medical apparatus having inflatable cuffs and a middle expandable section
US4820262A (en) * 1985-12-12 1989-04-11 Medical Engineering Corporation Ureteral stent
US4770653A (en) * 1987-06-25 1988-09-13 Medilase, Inc. Laser angioplasty
US4787884A (en) * 1987-09-01 1988-11-29 Medical Engineering Corporation Ureteral stent guidewire system
US4846193A (en) * 1987-09-21 1989-07-11 Advanced Cardiovascular Systems, Inc. Extendable guide wire for vascular procedures
US4874371A (en) * 1987-11-05 1989-10-17 Medilase, Inc. Control handle
WO1989006985A1 (en) * 1988-01-27 1989-08-10 Advanced Biomedical Devices, Inc. Steerable guidewire for vascular system
US4960134A (en) * 1988-11-18 1990-10-02 Webster Wilton W Jr Steerable catheter
USRE34502E (en) * 1988-11-18 1994-01-11 Webster, Jr.; Wilton W. Steerable catheter
US5059176A (en) * 1989-12-21 1991-10-22 Winters R Edward Vascular system steerable guidewire with inflatable balloon
US5207229A (en) * 1989-12-21 1993-05-04 Advanced Biomedical Devices, Inc. Flexibility steerable guidewire with inflatable balloon
US5057092A (en) * 1990-04-04 1991-10-15 Webster Wilton W Jr Braided catheter with low modulus warp
US5282478A (en) * 1991-08-21 1994-02-01 Baxter International, Inc. Guidewire extension system with coil connectors
US5271415A (en) * 1992-01-28 1993-12-21 Baxter International Inc. Guidewire extension system
EP0664719A1 (en) * 1992-09-15 1995-08-02 Cardiovascular Imaging Systems, Inc. Catheter tip with a low friction lining
EP0664719A4 (en) * 1992-09-15 1995-09-27 Cardiovascular Imaging Systems Catheter tip with a low friction lining.
US5341817A (en) * 1992-12-14 1994-08-30 Cordis Corporation Elongated guidewire for use in dilation procedures
US5377690A (en) * 1993-02-09 1995-01-03 C. R. Bard, Inc. Guidewire with round forming wire
US5865800A (en) * 1993-08-19 1999-02-02 Boston Scientific Corporation Deflectable catheter
US5562619A (en) * 1993-08-19 1996-10-08 Boston Scientific Corporation Deflectable catheter
EP0746371A4 (en) * 1994-02-24 1998-02-25 Cardiovascular Imaging Systems Improved tracking tip for a catheter
EP0746371A1 (en) * 1994-02-24 1996-12-11 Cardiovascular Imaging Systems, Inc. Improved tracking tip for a catheter
US5624379A (en) * 1995-10-13 1997-04-29 G. I. Medical Technologies, Inc. Endoscopic probe with discrete rotatable tip
US5727553A (en) * 1996-03-25 1998-03-17 Saad; Saad A. Catheter with integral electromagnetic location identification device
US6007514A (en) * 1997-09-30 1999-12-28 Nita; Henry Ultrasound system with pathfinding guidewire
US6113579A (en) * 1998-03-04 2000-09-05 Scimed Life Systems, Inc. Catheter tip designs and methods for improved stent crossing
WO1999044666A3 (en) * 1998-03-04 2001-03-08 Scimed Life Systems Inc Catheter tip designs and methods for improved stent crossing
US6517515B1 (en) 1998-03-04 2003-02-11 Scimed Life Systems, Inc. Catheter having variable size guide wire lumen
US8506519B2 (en) 1999-02-16 2013-08-13 Flowcardia, Inc. Pre-shaped therapeutic catheter
US20070260172A1 (en) * 1999-02-16 2007-11-08 Henry Nita Pre-shaped therapeutic catheter
US6911016B2 (en) 2001-08-06 2005-06-28 Scimed Life Systems, Inc. Guidewire extension system
US7588581B2 (en) 2002-03-26 2009-09-15 Medtronic, Inc. Placement of chronic micro-catheter device and method
US9265520B2 (en) 2002-08-02 2016-02-23 Flowcardia, Inc. Therapeutic ultrasound system
US10111680B2 (en) 2002-08-02 2018-10-30 Flowcardia, Inc. Therapeutic ultrasound system
US20040024393A1 (en) * 2002-08-02 2004-02-05 Henry Nita Therapeutic ultrasound system
US8647293B2 (en) 2002-08-02 2014-02-11 Flowcardia, Inc. Therapeutic ultrasound system
US20080228111A1 (en) * 2002-08-02 2008-09-18 Flowcardia, Inc. Therapeutic ultrasound system
US7993329B2 (en) 2002-08-13 2011-08-09 Cook Medical Technologies Llc ERCP catheter with a removable handle for lithotriptor compatible basket
US8956375B2 (en) 2002-08-26 2015-02-17 Flowcardia, Inc. Ultrasound catheter devices and methods
US8690819B2 (en) 2002-08-26 2014-04-08 Flowcardia, Inc. Ultrasound catheter for disrupting blood vessel obstructions
US20070021690A1 (en) * 2002-08-26 2007-01-25 Flowcardia, Inc. Ultrasound catheter for disrupting blood vessel obstructions
US9381027B2 (en) 2002-08-26 2016-07-05 Flowcardia, Inc. Steerable ultrasound catheter
US7955293B2 (en) 2002-08-26 2011-06-07 Flowcardia, Inc. Ultrasound catheter for disrupting blood vessel obstructions
US9421024B2 (en) 2002-08-26 2016-08-23 Flowcardia, Inc. Steerable ultrasound catheter
US8308677B2 (en) 2002-08-26 2012-11-13 Flowcardia, Inc. Ultrasound catheter for disrupting blood vessel obstructions
US20090275921A1 (en) * 2002-10-29 2009-11-05 Image-Guided Neurologics, Inc. Indexing Cell Delivery Catheter
US20040082905A1 (en) * 2002-10-29 2004-04-29 Image-Guided Neurologics, Inc. Indexing cell delivery catheter
US7575571B2 (en) 2002-10-29 2009-08-18 Medtronic, Inc. Indexing cell delivery catheter
US7967789B2 (en) 2002-10-29 2011-06-28 Medtronic, Inc. Indexing cell delivery catheter
US20100023036A1 (en) * 2003-01-14 2010-01-28 Flowcardia, Inc. Ultrasound catheter and methods for making and using same
US8043251B2 (en) 2003-01-14 2011-10-25 Flowcardia, Inc. Ultrasound catheter and methods for making and using same
US8152753B2 (en) 2003-01-14 2012-04-10 Flowcardia, Inc. Ultrasound catheter and methods for making and using same
US20100022920A1 (en) * 2003-01-14 2010-01-28 Flowcardia, Inc. Ultrasound catheter and methods for making and using same
US8961423B2 (en) 2003-02-26 2015-02-24 Flowcardia, Inc. Ultrasound catheter apparatus
US10130380B2 (en) 2003-02-26 2018-11-20 Flowcardia, Inc. Ultrasound catheter apparatus
US8062566B2 (en) 2003-04-08 2011-11-22 Flowcardia, Inc. Method of manufacturing an ultrasound transmission member for use in an ultrasound catheter device
US20070038158A1 (en) * 2003-04-08 2007-02-15 Flowcardia, Inc. Ultrasound catheter devices and methods
US9433433B2 (en) 2003-09-19 2016-09-06 Flowcardia, Inc. Connector for securing ultrasound catheter to transducer
US8641630B2 (en) 2003-09-19 2014-02-04 Flowcardia, Inc. Connector for securing ultrasound catheter to transducer
US20080167602A1 (en) * 2003-11-24 2008-07-10 Flowcardia, Inc. Steerable ultrasound catheter
US8613751B2 (en) 2003-11-24 2013-12-24 Flowcardia, Inc. Steerable ultrasound catheter
US8668709B2 (en) 2003-11-24 2014-03-11 Flowcardia, Inc. Steerable ultrasound catheter
US8617096B2 (en) 2004-08-26 2013-12-31 Flowcardia, Inc. Ultrasound catheter devices and methods
US8790291B2 (en) 2004-08-26 2014-07-29 Flowcardia, Inc. Ultrasound catheter devices and methods
US10004520B2 (en) 2004-08-26 2018-06-26 Flowcardia, Inc. Ultrasound catheter devices and methods
US20090216246A1 (en) * 2004-08-26 2009-08-27 Flowcardia, Inc. Ultrasound catheter devices and methods
US20110125164A1 (en) * 2004-08-26 2011-05-26 Flowcardia, Inc. Ultrasound catheter devices and methods
US7744574B2 (en) 2004-12-16 2010-06-29 Boston Scientific Scimed, Inc. Catheter tip to reduce wire lock
US20060135979A1 (en) * 2004-12-16 2006-06-22 Scimed Life Systems, Inc. Catheter tip to reduce wire lock
US8221343B2 (en) 2005-01-20 2012-07-17 Flowcardia, Inc. Vibrational catheter devices and methods for making same
US20070276342A1 (en) * 2006-03-28 2007-11-29 Bryant Lin Devices and related methods for treating incontinence
US20070239027A1 (en) * 2006-04-05 2007-10-11 Henry Nita Therapeutic ultrasound system
US9282984B2 (en) 2006-04-05 2016-03-15 Flowcardia, Inc. Therapeutic ultrasound system
US8496669B2 (en) 2006-11-07 2013-07-30 Flowcardia, Inc. Ultrasound catheter having protective feature against breakage
US9629643B2 (en) 2006-11-07 2017-04-25 Flowcardia, Inc. Ultrasound catheter having improved distal end
US8133236B2 (en) 2006-11-07 2012-03-13 Flowcardia, Inc. Ultrasound catheter having protective feature against breakage
US20080108902A1 (en) * 2006-11-07 2008-05-08 Henry Nita Ultrasound catheter having protective feature against breakage
US20080287804A1 (en) * 2006-11-07 2008-11-20 Henry Nita Ultrasound catheter having improved distal end
US8246643B2 (en) 2006-11-07 2012-08-21 Flowcardia, Inc. Ultrasound catheter having improved distal end
US8465456B2 (en) 2008-07-31 2013-06-18 Boston Scientific Scimed, Inc. Extendable aspiration catheter
US20100030186A1 (en) * 2008-07-31 2010-02-04 Boston Scientific Scimed, Inc. Extendable aspiration catheter
US8679049B2 (en) 2009-06-12 2014-03-25 Flowcardia, Inc. Device and method for vascular re-entry
US9402646B2 (en) 2009-06-12 2016-08-02 Flowcardia, Inc. Device and method for vascular re-entry
US8226566B2 (en) 2009-06-12 2012-07-24 Flowcardia, Inc. Device and method for vascular re-entry
US20100317973A1 (en) * 2009-06-12 2010-12-16 Henry Nita Device and method for vascular re-entry
US20110124960A1 (en) * 2009-10-07 2011-05-26 St Onge Andre D Devices for introducing multiple instruments and methods of use
WO2011044217A1 (en) * 2009-10-07 2011-04-14 Boston Scientific Scimed, Inc. Devices for introducing multiple instruments and methods of use
US9579093B2 (en) 2009-10-07 2017-02-28 Boston Scientific Scimed, Inc. Devices for introducing multiple instruments and methods of use
US8864653B2 (en) 2009-10-07 2014-10-21 Boston Scientific Scimed, Inc. Devices for introducing multiple instruments and methods of use
US9974429B2 (en) 2011-01-31 2018-05-22 Boston Scientific Scimed, Inc. Articulation section with locking
US9198561B2 (en) 2011-01-31 2015-12-01 Boston Scientific Scimed, Inc. Articulation section with locking
US9561345B2 (en) 2013-12-23 2017-02-07 Route 92 Medical, Inc. Methods and systems for treatment of acute ischemic stroke
US9820761B2 (en) 2014-03-21 2017-11-21 Route 92 Medical, Inc. Rapid aspiration thrombectomy system and method
US9681882B2 (en) 2014-03-21 2017-06-20 Route 92 Medical, Inc. Rapid aspiration thrombectomy system and method

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