US3550591A - Intravenous catheter unit - Google Patents

Intravenous catheter unit Download PDF

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US3550591A
US3550591A US3550591DA US3550591A US 3550591 A US3550591 A US 3550591A US 3550591D A US3550591D A US 3550591DA US 3550591 A US3550591 A US 3550591A
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Prior art keywords
needle
catheter
tube
slit
fig
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Douglas Macgregor
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George Kessler
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00Catheters; Hollow probes
    • A61M25/01Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/06Body-piercing guide needles or the like
    • A61M25/065Guide needles

Description

United States Patent [72] Inventor Douglas MacGregor Salt Lake City, Utah [21] App]. No. 753,587 [22] Filed Aug. 19, 1968 [45] Patented Dec. 29, 1970 [54] INTRAVENOUS CATHETER UNIT 3 Claims, 15 Drawing Figs.

[52] US. Cl 128/214.4, 128/221 [51] Int. Cl A6lm 5/00 [50] Field of Search 128/214L4, 221, 347, (LC. Digest) [56] References Cited UNITED STATES PATENTS 3.185,l52 5/1965 Ring 128/214.4 3,262,448 7/1966 Ring et a1 128/214.4 I 3,297,030 1/1967 Czorny et al 128/214.4

Primary Examiner-Dalton L. Truluck Attorney-Julius L. Rubinstein ABSTRACT: Catheters are flexible plastic tubes which extend through a hollow metal needle for the long term infusion of liquids into the vein of a patient. This invention relates to a hollow metal needle through which the catheter extends. The hollow needle is provided with a slit which extends along its entire length. In addition, the needle is provided with means of causing the needle to hinge open to widen the slit enough to pass the catheter through. In this way the needle may be separated from the catheter after the catheter is placed inside the vein. This arrangement protects the catheter from damage caused by the sharp point of the needle.

PATENTEBBEBZQIQYU 3.550.591

SHEET 1 UF 3 INVENTOR DOUGLAS MACGREGOR MWM ATTORNEY PATENTEU [H5829 I976 SHEET 2 BF 3.

INVENTOR DOUGLAS HAOGREGOR ATTORNEY PATENTEU0E029|570 3.550.591

saw 3 0F 3 INVENTOR DOUGLAS HACGREGOR ATTORNEY INTRAVENOUS CATHETER. UNIT BRIEF SUMMARY is moved through the hollow needle into the vein and left there while the needle is removed from the vein. The other end of the catheter is connected to the liquid supply.

Heretofore, the needle was taped against the skin of the pa- ,tientwhile the catheter remained inside the vein. However,

v,niovements of the patients body sometimes caused the sharp point of the needle to tear or break the catheter. On occasions when the catheter was broken, the flow of the blood carried the portion of the catheter bins inside the vein through the "body untilit finally lodged in a vital artery in the heart of or *braihbz'xusing death or serious injury.

What-sis needed, therefore, and comprises an important object of this invention, is to provide a needle which can be separated from the catheter after the end of the catheter is positioned inside the vein, to prevent the needle from tearing or damaging the catheter. i

This and other objects of this invention will become more apparent when better understood in the light of the accompanying specifications and drawings wherein:

FIG. I is a plan view of the catheter assembly with the catheter needle protected by a plastic shielding tube.

FIG. 2 discloses the catheter needle assembly with the protective shielding tube removed.

FIG. 3 discloses the needle of the catheter assembly inserted inside the vein of an arm, but before the catheter is moved inside the vein.

FIG. 4 disclosed discloses the needle of the catheter assembly inserted inside the vein but with the end of the catheter advanced into the vein.

FIG. 5 discloses the catheter assembly with the catheter shown projecting through the end of the hollow needle.

FIG. 6 discloses the catheter needle constructed according to the principles of this invention and showing the catheter extending through the fixed and movable hubs of the needle.

FIG. 7 shows the catheter needle without the catheter extending therethrough. I

FIG. 8 shows the catheter needle after it has been split open by the movement of the movable hub.

FIG. 9 is a sectional vie view taken on the line 9-9 of FIG. 7 showing an end view of the movable hub.

FIG. l'is a sectional view taken on the line 10-10 of FIG. 7 showing an end view of the fixed hub.

FIG. II is a sectional view taken on the line 11-11 of FIG. 7 showing a crosssectional view of the hollow needle.

FIG. 12 shows a perspective view of the catheter needle constructed according to the principles of this invention.

FIG. 13 shows the catheter assembly after the needle has been withdrawn from the vein leaving the end of the catheter inside the vein.

FIG. I4 shows the forward movement of the movable hub of the needle splitting the needle so that the catheter needle can be removed from the catheter.

FIG. I shows the catheter secured inside the arm of the patient with the catheter needle entirely removed.

Referring now to FIG. I of the drawing, a catheter assembly indicated generally by the reference numeral comprises a catheter l2 enclosed in a plastic guard sleeve 14. A flowcontrol plug I6 and an adapter 18 are secured to the inner end of the catheter in a manner well-known in the art.

The catheter assembly includes a catheter needle indicated generally by the reference numeral 20. The needle is typically a hollow tube with a pointed end. (See FIG. 2) In the disclosed embodiment the needle is either slit or rolled from sheet metal and provided with a slit 22. (See FIG. 6) The slit 22 extends completely through the wall of the tube. (See FIG. 11) In addition, the tube or needle has at least one generally straight groove 24 formed on the inner surface of the walls of the tube opposite the axially extending slit 22. This groove, as will be described below, forms a line of weakness in the tube and serves as a hinge. (See FIGS. 1, 2, 6, 7 and 11) The groove 24 should be somewhere between one-quarter and three-quarters of the thickness of the needle wall depending on the metal used to form the needle in order for the groove to function satisfactorily as a hinge or break line, as described below. In any event, the groove must be deep enough so that when the slit is widened there is not sufficient spring in the metal to close the slit in the needle again.

The needle is formed so that the rear portion 26 is flared causing the facing edges of the slit 22, which are in abutting relationship from the point of the tube or needle to a region adjacent the rear end of the tube, to diverge at 28. (See FIGS. 6 and 7) The flared portion of the needle produces a gap in the slit which may be closed or covered by a piece of plastic or other means.

The needle is also provided with movable and fixed generally channel shaped hubs. These are hubs 32 and 30 respectively. (See FIGS. 6, 7 and 8) The flared rear portion 26 of the tube is rigidlysecured to fixed hub 30. (See FIG. 10) However, the flared rear portion of the needle lies between and is embraced by the walls 34 and 36 of the movable hub 32. (See FIG. 9) These walls terminate in inwardly projecting beads 38 and 40 which ride over the edges of the slit as will be described below and provide the necessary cam action.

The inner end of the plastic guard sleeve 14 may be removably secured to the fixed hub 30, prior to use, by friction or some adhesive or other suitable means. Also, prior to use, the needle may be protected by means of the removable plastic cover 42. (See FIG. 1)

In operation, the plastic guard sleeve 42 is first removed. Then the needle is inserted into a vein of the patient. (See FIG. 3) Next the catheter 12 is forced forward from the position shown in FIG. 2 to the position shown in FIGS. 3 and 5. When this happens the end of the catheter extends out of the needle into the vein. (See FIG. 4)

Next, the needle 20 is withdrawn from the vein leaving the catheter inside the vein. (See FIG. 13) After that the movable hub 32, riding on the diverging edges of the slit, is forced forward toward the tip 46 of the needle 20. (See FIG. 14) When this happens the cam action exerted by the walls 34 and 36 and beads 38 and 40 on the edges of the diverging part of the slit exerts pressure on the sidesof the slit splitting the needle by causing it to hinge open on groove 24, as shown in FIG. 8.

When this happens the catheter can be lifted out of the needle 20 and the channel shaped fixed and movable hubs. When this happens the catheter needle is completely separated from the catheter removing all source of danger. Thereafter, all that remains secured to the patient is one end of the catheter in the vein of the patient in FIG. 15, while the opposite end of the catheter is connected to a supply of liquid, usually food or blood.

It is noted in the embodiment shown, that the groove 24 does not extend completely to the end 46 of the needle. This is to prevent the needle from breaking into two halves. However, under some circumstances splitting the needle entirely may be desirable and to do this it is only necessary to extend the groove 21 completely to the sharp point of the needle.

If there should be a reason why the movable hub 32 should not be removed from the needle it may be prevented by placing a set back 48 in slit 2 of the needle 20. Of course, the hub 32 would also be provided with a suitable set back to prevent hub 32 from being moved beyond the edge of the needle. Safety reasons would require the set back 48 to be placed in such a position that the moveable hub 32 covers the point 46 of the needle to prevent damage to the catheter or injury to personnel handling the needle.

The embodiment in the drawing discloses a needle designed to split open with an axially extending slit extending through the walls of the tube. It is, of course, contemplated that the needle could have other configurations which are designed to permit the catheter to be removed from the needle after the catheter is inserted in the vein. For example, the needle could be a tightly wound spiral of metal shaped something like a spring and after use the needle could be stretched so that the coils are separated enough to permit the catheter to be wound out of the needle. Alternatively, the needle could be formed initially from two generally semicircular parts with one needle nesting inside the other and shaped so that when in a nesting condition they form a tube, but after use the parts of the needle could be separated from each other to permit the catheter to be removed. It is also contemplated that the needle could be formed with a slit wide enough to permit the catheter to be moved therethrough. Prior to use the slit could be covered by some frangible or removable plat plastic. When the time comes to separate the catheter, the plastic could be stripped away by some suitable means to permit the catheter to pass through the slit.

Obviously man modifications and variations of the present invention are possible in the light of the above teachings. It is therefore to be understood that within the scope of the appended claims the invention can be practiced otherwise than as specifically described.

lclaim:

l. A needle for a catheter assembly comprising a hollow tube, said tube having a sharp point at one end, a generally straight axially extending slit extending through the walls of the tube, said slit having generally abutting edges extending from the point of the tube to a region generally adjacent the rear end of said tube, a generally straight groove formed in the inner walls of the tube opposite said slit to serve as a hinge, the edges of said slit adjacent the rear edges of said tube diverging, and cam means embracing said tube and riding on the diverging edges of said slit and movable from the rear end of said tube to the forward end of said tube for exerting pressure on the adjacent abutting edges of said slit to cause the tube to hinge on the groove in said tube to widen said slit enough so the catheter can be moved therethrough whereby the needle can be separated completely from the catheter.

2. A needle for a catheter assembly comprising a hollow tube, said tube having a sharp point at one end, a generally straight axially extending slit extending through the walls of the tube, said tube having generally abutting facing edges from the point of the tube to a region adjacent the rear end of the tube, a generally straight groove formed inthe inner walls of the tube opposite the slit to provide a line of weakness in the walls of the tube whereby the groove functions as a hinge, the said facing edges of the slit adjacent the rear end of the tube diverging, the rear portion of said tube flared and rigidly secured to a generally channel-shaped hub, a movable generally channel-shaped hub, said movable hub having walls portions embracing the sides of the tube, the wall portions terminating in inwardly projecting beads, riding on the diverging edges of the slit and retaining the movable .hub on the tube whereby when the movable hub is forced toward the point of the tube the wall portions and beads riding on the diverging edges of the slit of the tube exert a cam action which exerts pressure on the adjacent edges of the slit to cause the tube walls to hinge on the groove thereby moving the walls of the tube enough to widen said slit so the catheter can be moved therethrough whereby the needle can be completely separated from the catheter.

3. The needle for the catheter assembly described in claim 2 wherein the portion of the slit in the tube adjacent the sharp point is provided with a set back, said movable hub provided with a suitable set back to prevent the movable hub from being removed from the needle, the location of si said set back in the slit such that when the movable hub is moved as far toward the point of the tube as it can go, the movable hub covers the sharp point of the tube for the safety of the persons using the catheter assembly.

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Cited By (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3603311A (en) * 1970-02-19 1971-09-07 Illinois Tool Works Sliding wedge-type removable guide needle
US3656479A (en) * 1970-02-19 1972-04-18 James A Huggins Detachable guide needle
FR2123398A1 (en) * 1971-01-29 1972-09-08 Braun Melsungen Ag
US3877429A (en) * 1973-11-30 1975-04-15 David L Rasumoff Catheter placement device
US3878835A (en) * 1973-03-01 1975-04-22 Olympus Optical Co Chucking attachment for insertion of a fine flexible tube into an endoscope
DE2906785A1 (en) * 1979-02-22 1980-08-28 Boehringer Sohn Ingelheim Hand operated brake preventing slipping back of catheter - has coupling to sheath partly of elastically deformable material
US4306562A (en) * 1978-12-01 1981-12-22 Cook, Inc. Tear apart cannula
US4354491A (en) * 1979-03-18 1982-10-19 Marbry Steven L Fluid transfer device
WO1982003775A1 (en) * 1981-04-30 1982-11-11 Baxter Travenol Lab Peelable catheter with heat shrink ring and suture sleeve
WO1982003778A1 (en) * 1981-04-30 1982-11-11 Baxter Travenol Lab Peelable catheter introduction device
FR2512677A1 (en) * 1981-09-11 1983-03-18 Overland Christian hollow surgical needle for single use, preferably the kind Redon
USRE31855E (en) * 1978-12-01 1985-03-26 Cook, Inc. Tear apart cannula
US4568329A (en) * 1982-03-08 1986-02-04 Mahurkar Sakharam D Double lumen catheter
US4583968A (en) * 1983-10-03 1986-04-22 Mahurkar Sakharam D Smooth bore double lumen catheter
US4623327A (en) * 1985-02-12 1986-11-18 Mahurkar Sakharam D Method and apparatus for using dual-lumen catheters for extracorporeal treatment
US4692141A (en) * 1982-03-08 1987-09-08 Mahurkar Sakharam D Double lumen catheter
US4743265A (en) * 1986-04-23 1988-05-10 Dij Catheter Corp Articulated catheter placement device
US4770652A (en) * 1985-02-12 1988-09-13 Mahurkar Sakharam D Method and apparatus for using dual-lumen catheters for extracorporeal treatment
US4801294A (en) * 1985-12-09 1989-01-31 Sherwood Medical Company Catheter for nasogastric intubation
US4808155A (en) * 1986-02-27 1989-02-28 Mahurkar Sakharam D Simple double lumen catheter
US4988356A (en) * 1987-02-27 1991-01-29 C. R. Bard, Inc. Catheter and guidewire exchange system
US5171222A (en) * 1988-03-10 1992-12-15 Scimed Life Systems, Inc. Interlocking peel-away dilation catheter
US5188605A (en) * 1991-05-08 1993-02-23 Cordis Corporation Separable insertion tool
US5197951A (en) * 1983-12-14 1993-03-30 Mahurkar Sakharam D Simple double lumen catheter
US5221255A (en) * 1990-01-10 1993-06-22 Mahurkar Sakharam D Reinforced multiple lumen catheter
US5250033A (en) * 1992-10-28 1993-10-05 Interventional Thermodynamics, Inc. Peel-away introducer sheath having proximal fitting
US5263932A (en) * 1992-04-09 1993-11-23 Jang G David Bailout catheter for fixed wire angioplasty
US5320602A (en) * 1993-05-14 1994-06-14 Wilson-Cook Medical, Inc. Peel-away endoscopic retrograde cholangio pancreatography catheter and a method for using the same
US5342297A (en) * 1992-07-10 1994-08-30 Jang G David Bailout receptacle for angioplasty catheter
US5348536A (en) * 1993-08-02 1994-09-20 Quinton Instrument Company Coextruded catheter and method of forming
US5374245A (en) * 1990-01-10 1994-12-20 Mahurkar; Sakharam D. Reinforced multiple-lumen catheter and apparatus and method for making the same
US5385562A (en) * 1990-10-29 1995-01-31 Scimed Life Systems, Inc. Guide catheter system for an angioplasty balloon catheter
US5395335A (en) * 1991-05-24 1995-03-07 Jang; G. David Universal mode vascular catheter system
US5403291A (en) * 1993-08-02 1995-04-04 Quinton Instrument Company Catheter with elongated side holes
US5409469A (en) * 1993-11-04 1995-04-25 Medtronic, Inc. Introducer system having kink resistant splittable sheath
US5527292A (en) * 1990-10-29 1996-06-18 Scimed Life Systems, Inc. Intravascular device for coronary heart treatment
US5554118A (en) * 1991-05-24 1996-09-10 Jang; G. David Universal mode vascular catheter system
US5690642A (en) * 1996-01-18 1997-11-25 Cook Incorporated Rapid exchange stent delivery balloon catheter
US5693030A (en) * 1995-06-28 1997-12-02 Lee, Lee & Beal, Inc. Catheter and method of introduction
US20030078537A1 (en) * 1991-06-13 2003-04-24 Jang G. David Convertible mode vascular catheter system
US6685721B1 (en) 1991-06-11 2004-02-03 Advanced Cardiovascular Systems, Inc. Catheter system with catheter and guidewire exchange
US20040059367A1 (en) * 2002-09-20 2004-03-25 Champ Davis Reattachable introducer for a medical device deployment system
US6821287B1 (en) 1991-05-24 2004-11-23 Advanced Cardiovascular Systems, Inc. Multi-mode vascular catheter system
US20070135768A1 (en) * 2005-12-14 2007-06-14 Carlsen Wayne D Spinal and epidural regional anesthesia catheter
US20070260158A1 (en) * 2006-05-03 2007-11-08 Cook Incorporated Tassel tip wire guide
US20080208133A1 (en) * 2007-02-28 2008-08-28 Lieberman Randy A Systems and methods for gaining access around an implanted medical device
US20100288892A1 (en) * 2003-06-06 2010-11-18 Fermions, L.L.C. Wall support
US20110224681A1 (en) * 2010-03-15 2011-09-15 Boston Scientific Neuromodulation Corporation System and method for making and using a splitable lead introducer for an implantable electrical stimulation system

Cited By (67)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3656479A (en) * 1970-02-19 1972-04-18 James A Huggins Detachable guide needle
US3603311A (en) * 1970-02-19 1971-09-07 Illinois Tool Works Sliding wedge-type removable guide needle
FR2123398A1 (en) * 1971-01-29 1972-09-08 Braun Melsungen Ag
US3878835A (en) * 1973-03-01 1975-04-22 Olympus Optical Co Chucking attachment for insertion of a fine flexible tube into an endoscope
US3877429A (en) * 1973-11-30 1975-04-15 David L Rasumoff Catheter placement device
USRE31855E (en) * 1978-12-01 1985-03-26 Cook, Inc. Tear apart cannula
US4306562A (en) * 1978-12-01 1981-12-22 Cook, Inc. Tear apart cannula
DE2906785A1 (en) * 1979-02-22 1980-08-28 Boehringer Sohn Ingelheim Hand operated brake preventing slipping back of catheter - has coupling to sheath partly of elastically deformable material
US4354491A (en) * 1979-03-18 1982-10-19 Marbry Steven L Fluid transfer device
WO1982003775A1 (en) * 1981-04-30 1982-11-11 Baxter Travenol Lab Peelable catheter with heat shrink ring and suture sleeve
WO1982003778A1 (en) * 1981-04-30 1982-11-11 Baxter Travenol Lab Peelable catheter introduction device
US4411654A (en) * 1981-04-30 1983-10-25 Baxter Travenol Laboratories, Inc. Peelable catheter with securing ring and suture sleeve
US4412832A (en) * 1981-04-30 1983-11-01 Baxter Travenol Laboratories, Inc. Peelable catheter introduction device
FR2512677A1 (en) * 1981-09-11 1983-03-18 Overland Christian hollow surgical needle for single use, preferably the kind Redon
US4568329A (en) * 1982-03-08 1986-02-04 Mahurkar Sakharam D Double lumen catheter
US4692141A (en) * 1982-03-08 1987-09-08 Mahurkar Sakharam D Double lumen catheter
US4583968A (en) * 1983-10-03 1986-04-22 Mahurkar Sakharam D Smooth bore double lumen catheter
US5197951A (en) * 1983-12-14 1993-03-30 Mahurkar Sakharam D Simple double lumen catheter
US4623327A (en) * 1985-02-12 1986-11-18 Mahurkar Sakharam D Method and apparatus for using dual-lumen catheters for extracorporeal treatment
US4770652A (en) * 1985-02-12 1988-09-13 Mahurkar Sakharam D Method and apparatus for using dual-lumen catheters for extracorporeal treatment
US4801294A (en) * 1985-12-09 1989-01-31 Sherwood Medical Company Catheter for nasogastric intubation
US4808155A (en) * 1986-02-27 1989-02-28 Mahurkar Sakharam D Simple double lumen catheter
US4743265A (en) * 1986-04-23 1988-05-10 Dij Catheter Corp Articulated catheter placement device
US4988356A (en) * 1987-02-27 1991-01-29 C. R. Bard, Inc. Catheter and guidewire exchange system
US5171222A (en) * 1988-03-10 1992-12-15 Scimed Life Systems, Inc. Interlocking peel-away dilation catheter
USRE36857E (en) * 1988-03-10 2000-09-05 Scimed Life Systems, Inc. Interlocking peel-away dilation catheter
US5221255A (en) * 1990-01-10 1993-06-22 Mahurkar Sakharam D Reinforced multiple lumen catheter
US5374245A (en) * 1990-01-10 1994-12-20 Mahurkar; Sakharam D. Reinforced multiple-lumen catheter and apparatus and method for making the same
US5876375A (en) * 1990-10-29 1999-03-02 Scimed Life Systems, Inc. Guide catheter system for an angioplasty balloon catheter
US5843051A (en) * 1990-10-29 1998-12-01 Scimed Life Systems, Inc. Intravascular device for coronary heart treatment
US5527292A (en) * 1990-10-29 1996-06-18 Scimed Life Systems, Inc. Intravascular device for coronary heart treatment
US5385562A (en) * 1990-10-29 1995-01-31 Scimed Life Systems, Inc. Guide catheter system for an angioplasty balloon catheter
US5188605A (en) * 1991-05-08 1993-02-23 Cordis Corporation Separable insertion tool
US5554118A (en) * 1991-05-24 1996-09-10 Jang; G. David Universal mode vascular catheter system
US5395335A (en) * 1991-05-24 1995-03-07 Jang; G. David Universal mode vascular catheter system
US6821287B1 (en) 1991-05-24 2004-11-23 Advanced Cardiovascular Systems, Inc. Multi-mode vascular catheter system
US6824554B1 (en) 1991-05-24 2004-11-30 Advanced Cardiovascular Systems, Inc. Convertible mode vascular catheter system
US6692465B2 (en) 1991-06-11 2004-02-17 Advanced Cardiovascular Systems, Inc. Catheter system with catheter and guidewire exchange
US6685721B1 (en) 1991-06-11 2004-02-03 Advanced Cardiovascular Systems, Inc. Catheter system with catheter and guidewire exchange
US7229460B2 (en) 1991-06-11 2007-06-12 Advanced Cardiovascular Systems, Inc. Catheter system with catheter and guidewire exchange
US20040176793A1 (en) * 1991-06-11 2004-09-09 Advanced Cardiovascular Systems, Inc. Catheter system with catheter and guidewire exchange
US7074231B2 (en) 1991-06-13 2006-07-11 Advanced Cardiovascular Systems, Inc. Convertible mode vascular catheter system
US20030078537A1 (en) * 1991-06-13 2003-04-24 Jang G. David Convertible mode vascular catheter system
US5462530A (en) * 1992-04-09 1995-10-31 Jang; G. David Intravascular catheter with bailout feature
US5263932A (en) * 1992-04-09 1993-11-23 Jang G David Bailout catheter for fixed wire angioplasty
US5342297A (en) * 1992-07-10 1994-08-30 Jang G David Bailout receptacle for angioplasty catheter
US5250033A (en) * 1992-10-28 1993-10-05 Interventional Thermodynamics, Inc. Peel-away introducer sheath having proximal fitting
US5320602A (en) * 1993-05-14 1994-06-14 Wilson-Cook Medical, Inc. Peel-away endoscopic retrograde cholangio pancreatography catheter and a method for using the same
US5403291A (en) * 1993-08-02 1995-04-04 Quinton Instrument Company Catheter with elongated side holes
US5348536A (en) * 1993-08-02 1994-09-20 Quinton Instrument Company Coextruded catheter and method of forming
US5409469A (en) * 1993-11-04 1995-04-25 Medtronic, Inc. Introducer system having kink resistant splittable sheath
US5693030A (en) * 1995-06-28 1997-12-02 Lee, Lee & Beal, Inc. Catheter and method of introduction
US5690642A (en) * 1996-01-18 1997-11-25 Cook Incorporated Rapid exchange stent delivery balloon catheter
US8313506B2 (en) 2002-09-20 2012-11-20 Codman & Shutleff, Inc. Reattachable introducer for a medical device deployment system
US20040059367A1 (en) * 2002-09-20 2004-03-25 Champ Davis Reattachable introducer for a medical device deployment system
US20060212067A1 (en) * 2002-09-20 2006-09-21 Champ Davis Reattachable introducer for a medical device deployment system
US7208003B2 (en) * 2002-09-20 2007-04-24 Cordis Neurovascular, Inc. Reattachable introducer for a medical device deployment system
US8133252B2 (en) 2002-09-20 2012-03-13 Codman & Shurtleff, Inc. Reattachable introducer for a medical device deployment system
US20100288892A1 (en) * 2003-06-06 2010-11-18 Fermions, L.L.C. Wall support
US20070135768A1 (en) * 2005-12-14 2007-06-14 Carlsen Wayne D Spinal and epidural regional anesthesia catheter
WO2007070096A1 (en) * 2005-12-14 2007-06-21 Kimberly-Clark Worldwide, Inc. Spinal and epidural regional anesthesia catheter
US20070260158A1 (en) * 2006-05-03 2007-11-08 Cook Incorporated Tassel tip wire guide
US8702720B2 (en) 2006-05-03 2014-04-22 Cook Medical Technologies Llc Tassel tip wire guide
US8012127B2 (en) * 2007-02-28 2011-09-06 Medtronic, Inc. Systems and methods for gaining access around an implanted medical device
US20080208133A1 (en) * 2007-02-28 2008-08-28 Lieberman Randy A Systems and methods for gaining access around an implanted medical device
US9302078B2 (en) 2007-02-28 2016-04-05 Medtronic, Inc. Systems and methods for gaining access around an implanted medical device
US20110224681A1 (en) * 2010-03-15 2011-09-15 Boston Scientific Neuromodulation Corporation System and method for making and using a splitable lead introducer for an implantable electrical stimulation system

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