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Publication numberUS3559643 A
Publication typeGrant
Publication dateFeb 2, 1971
Filing dateJun 12, 1968
Priority dateJun 12, 1968
Publication numberUS 3559643 A, US 3559643A, US-A-3559643, US3559643 A, US3559643A
InventorsPannier Karl A Jr, Sorenson James L
Original AssigneeLevoy Inc S
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Catheter placement unit
US 3559643 A
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Description  (OCR text may contain errors)

United States Patent Karl A. Pannier, Jr.

Salt Lake City, Utah;

James L. Sorenson, Salt Lake City, Utah 736,423

June 12, 1968 Feb. 2, 1971 bevoys, lne.

Salt Lake City, Utah a corporation of Utah Inventors Appl. No. Filed Patented Assignee CATHETER PLACEMENT UNIT 5 Claims, 4 Drawing Figs.

US. Cl. l28/214.4,

128/348 lnt.Cl. A6lm 5/00 Field of Search 128/214,

214.4, 348, I.C.( Digest); 206/632 [56] References Cited UNITED STATES PATENTS 3,185,152 5/1965 Ring l28/214.4 3,262,448 7/1966 Ring et al 128/214.4

Primary Examiner-Dalton L. Truluck Attorney-Hill, Sherman, Meroni, Gross & Simpson ABSTRACT: A catheter placement unit for the sterile insertion of a catheter into a body lumen through an incised open ing in the lumen wall for parenteral infusion and other purposes, the unit having no cannulated needle, and embodying a longitudinally slit sheath with a catheter therein and an advancer connected to one end of the catheter and initially in axial alignment with said sheath to close an end thereof, the other end of said sheath being initially capped.

CATHETER PLACEMENT UNIT BACKGROUND OF THE INVENTION l. Field of the Invention Pertains to the art of surgery, medicators, and particularly to a dosing device in the form of a catheter placement unit for positioning a catheter in a vein or other body lumen through an incised opening in the lumen wall, without the aid of any fonn of a puncturing needle telescopically associated with the catheter. The unit embodies easily operable means for placing the catheter in the lumen while maintaining the catheter in a completely sterile condition during placing, and the catheter may be placed in the lumen while infusion takes place. The unit is so constructed that it provides an exceedingly easy and rapid insertion of the catheter even under most extreme conditions.

2. Description of the Prior Art Heretofore, catheters have been enclosed in a sheath having a slit extending lengthwise thereof so that the sheath could be disrupted as the catheter was advanced into a body lumen and then the sheath removed. A sheath of this character is shown in the Ring et al. U.S. Pat. No. 3,262,448 issued Jul. 26, 1966. However, in all such instances heretofore a needle has been telescopically associated with the catheter and the puncture in the wall of the body lumen was made by the needle and then the catheter advanced relatively to the needle. However, there are a noticable percentage of emergencies where intravenous feeding or medication is indicated and a catheter placement unit equipped with a needle cannot be utilized. In such emergency the patient is in a state of deep shock and the attending surgeon is unable to find the vein, which is practically collapsed. It is therefore necessary to reach the vein by surgery and incise the wall of the vein to provide an opening for the entrance of the catheter, and after placement in the vein the catheter is usually sewn right to the vein the catheter is usually sewn right to the vein when the incision is closed for later removal after the patienthas improved. Heretoforc, in such cases extreme difficulty was undergone in maintaining sterility SUMMARY OF THE INVENTION The instant invention or discovery embodies a catheter in a sheath in the form of a conduit having a slit lengthwise thereof which maintains the catheter in a sterile condition. A cap is placed over the end of the sheath from which the catheter is advanced, and the catheter is connected to a small fitting which plugs the other end of the sheath, this fitting being connected to a flexible tube having a fitting on the end thereof for connection to the line from an infusion system. The fitting on the end of the catheter is so constructed that it cannot accidentally come out of the sheath along with a portion of the catheter during advancement of the catheter and is also so small as not to alarm a patient coming out of shock. The catheter is fully protected at all times during advancement, and the attending surgeon cannot touch the catheter during advancement and can easily hold the sheath and advance the catheter regardless of the contaminated condition of his hands or gloves. No assistant is required to place the catheter through an incised opening in a body lumen and the sterility of the catheter is completely maintained. The catheter could be BRIEF DESCRIPTION OF THE DRAWING FIG. I is a top plan view of a catheter placement unit embodying principles of this invention, showing the same prior to use;

FIG. 2 is an enlarged part sectional part elevational view taken substantially as indicated by the line ll-ll of FIG. 1;

FIG. 3 is an enlarged view showing the position of the parts during advancement of the catheter; and

FIG. 4 is a vertical sectional view taken substantially as indicated by the line lV-IV of FIG. 3. DESCRIPTION OF THE PREFERRED EMBODIMENT It will be understood that for purposes of clear presentation all FIGS. of the drawing are enlarged above the size the actual product is in most instances.

The illustrated embodiment of the invention includes the catheter sheath 1 which is in the form of a conduit and has a slit 2 extending lengthwise thereof. This conduit or sheath 1 is preferably made of a nonwettable plastic material, preferably extruded, polyethylene being one satisfactory material, in such a manner that it has an inherent resiliency which acts to maintain the slit 2 closed at all times, there being no physical seal necessary to maintain the sidewalls of the slit in contact. Such arrangement provides what may be termed a surfacetensioned seal, because the plastic not being wettable, surface tension of any liquid, outside or within the sheath, prevents that liquid from flowing through the relatively firmly closed slit. The closure of the slit is amply sufficient to preserve the sterility of the contents of the sheath which in this instance, will only be a catheter 3 and a portion of the fitting connected to it.

The catheter 3 is also preferably formed of a suitable plastic material and is more flexible than is the sheath. The end of the sheath out of which the catheter is advanced is initially closed by a suitable cap 4 to preserve sterility until time for use. The other end of the sheath is substantially closed by a tubular fitting 5 in one end of which the catheter is firmly secured, and in the other end of which an end of a tube 6 is firmly secured which tube terminates in a fitting 7 for connection to an infusion'system, initially closed by cap 8.

The body portion of the fitting 5 is preferably cylindrical and of a relatively small diameter, but which is sufficient to be grasped by the thumb and finger of the attending surgeon and used to advance the catheter. The diameter of the body of the fitting or advancer 5 can be substantially the same as the outside diarneter of the sheath 1. With reference more particularly to FIGS. 2 and 3 it will be seen at the inner end of the fitting or advancer 5 there is a section of reduced diameter providing a nipple 9 from which a still narrower neck 10 extends terminating in a ball-shaped head 11 which maintains the catheter within the sheath during advancement of the catheter. This head 11 cannot be withdrawn from the sheath directly through the slit 2 except by force much too great to be accidental.

When the unit is assembled, the nipple 9 of the catheter actuator 5 is inserted within the sheath. This insertion spreads the outer end of the sheath 1 slightly into a V-shaped opening 12, which is not sufficiently large to interfere with the retainment of sterility of the contents of the sheath. However, the opening 12 is visible to the attending surgeon and enables him to quickly locate the slit in the sheath and immediately hold the unit in the most advantageous position for advancement of the catheter into the body lumen, usually with the slit held upperrnost.

In operation, the instantinvention is simple and effective. After incising the vein or body lumen in its practically collapsed condition, the catheter placement unit may be utilized by the same attending surgeon regardless of the soiled and I contaminated condition of his hands or gloves. The end cap 4 may be first be removed, then the end cap 8 on the fitting 7 may be removed and the fitting 7 connected to an infusion system. The infusion system may be turned on to flush out the catheter to eliminate air and any sterilization sediment, the infusion system temporarily shut off and the end of the catheter entered into the incised opening in the body lumen. After the entrance of the catheter the infusion system is preferably turned on again so that the flow of the infusion liquid will tend to open the collapsed body lumen ahead of the catheter and permit a smooth and adequate advancement of the catheter into the lumen.

To advance the catheter into the body lumen it is a simple expedient for the attending surgeon to grasp the sheath 1, the V-shaped opening 12 enabling him to immediately properly position the sheath in his hands, elevate the advancer or fitting to the position seen in FIGS. 3 and 4 and merely push it along the sheath with the catheter steadily advancing into the lumen when the end of the sheath is reached it separates from the catheter advancer and is discarded leaving the catheter in the incised lumen and the only thing left exposed on the body of the patient is a relatively small fitting 5 which may be secured by adhesive tape to the patients body. This requires a very short amount of time and the incision can be immediately closed with the catheter in the body lumen, permitting the entire wound to heal and the catheter may be pulled out after the patient recovers sufficiently. All danger of infection of a patient by virtue of the positioning of the catheter is eliminated.

It will be understood that modifications and variations may be effected without departing from the scope of the novel concepts of the present invention.

We claim:

l. A catheter placement unit for sterilely advancing a catheter through an incised opening in a body lumen without the aid of a needle cannula, including:

a sheath having a longitudinal slit therein extending throughout its entire length;

a catheter in said sheath;

a straight tubular catheter advancer disposed in axial alignment with said sheath and initially closing one end of said sheath, the other end of said sheath presenting a blunt surface;

a reduced neck portion of said advancer extending into said one end of said sheath to which an end of said catheter is firmly connected;

a retaining head on said neck portion of larger diameter than said reduced neck and axially aligned therewith within said sheath preventing complete accidental lateral withdrawal of said portion of the advancer through the slit in said sheath during advancement of the catheter; and

said advancer being tipped relatively to said sheath out of axial alignment therewith to advance the catheter, so that said reduced neck portion rides along the slit while said head remains within the sheath.

2. The catheter placement unit of claim 1 including, a temporary cap initially closing the other end of said sheath and removable when the unit is put to use.

3. The catheter placement unit of claim 1 including:

a tube secured at one end in the outer portion of said advancer for connection to an infusion system; and

a temporary cap closing said tube until the unit is put to use.

4. The catheter placement unit of claim 1 wherein said advancer is of substantially the same outside diameter as said sheath.

5. The catheter placement unit of claim 1 wherein there is a slight visible spreading of said sheath at the slit therein caused by said advancer portion extending therein and which acts as an indicator for quickly placing the unit in the proper position.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3656479 *Feb 19, 1970Apr 18, 1972Huggins James ADetachable guide needle
US3742958 *Apr 21, 1971Jul 3, 1973Rundles CSuprapubic catheter inserter
US3786810 *Mar 22, 1971Jan 22, 1974Levoy Inc SPlacement apparatus for positioning an elongated element in a body lument
US4121572 *Feb 7, 1977Oct 24, 1978G.D. Searle & Co.Uterine sound
US4136681 *Feb 17, 1976Jan 30, 1979American Home Products CorporationCatheter for measuring intrauterine pressure
US4175564 *Mar 13, 1978Nov 27, 1979Kwak In SNasal gastric tube insertion guide and method
US4252131 *Apr 17, 1978Feb 24, 1981American Home Products CorporationCatheter for measuring intrauterine pressure
US4325387 *Dec 17, 1979Apr 20, 1982American Home Products CorporationSealing apparatus for intrauterine pressure catheter and the like
US4498902 *Feb 23, 1983Feb 12, 1985Purdue Research FoundationCatheter guide
US4921479 *Oct 2, 1987May 1, 1990Joseph GrayzelCatheter sheath with longitudinal seam
US4966161 *Mar 31, 1989Oct 30, 1990Utah Medical ProductsApparatus for continuously measuring intracompartmental pressure within a body cavity
US5171222 *Jul 18, 1990Dec 15, 1992Scimed Life Systems, Inc.Interlocking peel-away dilation catheter
US5179963 *Oct 11, 1991Jan 19, 1993Berger J LeePercutaneous carpal tunnel plasty method
US5385562 *Jan 19, 1993Jan 31, 1995Scimed Life Systems, Inc.Guide catheter system for an angioplasty balloon catheter
US5527292 *Sep 9, 1994Jun 18, 1996Scimed Life Systems, Inc.Intravascular device for coronary heart treatment
US5545136 *Jan 5, 1995Aug 13, 1996Berger; J. LeeGrooved catheter director apparatus
US5843051 *Mar 21, 1996Dec 1, 1998Scimed Life Systems, Inc.Intravascular device for coronary heart treatment
US5876375 *May 15, 1996Mar 2, 1999Scimed Life Systems, Inc.Guide catheter system for an angioplasty balloon catheter
US7048719 *Jun 7, 2002May 23, 2006Microvention, Inc.Endovascular catheter resheathing apparatus and related methods
US8105284 *Mar 1, 2005Jan 31, 2012Irving MizusSystem for access into bodily cavity
US8216185Oct 20, 2008Jul 10, 2012Berger J LeeCannulated apertured grooved director
US8801669 *Jan 9, 2012Aug 12, 2014Irving MizusSystem for access into bodily cavity
US20120109101 *Jan 9, 2012May 3, 2012Irving MizusSystem for access into bodily cavity
USRE35523 *Jan 10, 1995Jun 3, 1997Berger; J. LeePercutaneous carpal tunnel plasty method
USRE36857 *Dec 13, 1994Sep 5, 2000Scimed Life Systems, Inc.Interlocking peel-away dilation catheter
EP0162982A2 *Oct 25, 1984Dec 4, 1985Cook IncorporatedCatheter sheath
Classifications
U.S. Classification604/171, D24/112
International ClassificationA61M25/00, A61M25/01
Cooperative ClassificationA61M25/0111, A61M25/00
European ClassificationA61M25/00, A61M25/01C2