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Publication numberUS2937643 A
Publication typeGrant
Publication dateMay 24, 1960
Filing dateOct 11, 1957
Priority dateOct 11, 1957
Publication numberUS 2937643 A, US 2937643A, US-A-2937643, US2937643 A, US2937643A
InventorsElliot Eric C
Original AssigneeElliot Eric C
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Device for fluid transference
US 2937643 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

y 1960 E. c. ELLIOT 2,937,643

DEVICE FOR FLUID TRANSFERENCE Filed Oct. 11, 1957 //v VENTOR. [z/c C. [LL/07' A Trams 7s United States Patent 2,937,643 DEVICE FOR FLUID TRANSFERENCE Eric C. Elliot, 8420 118th St., Edmonton, Alberta, Canada Filed Oct. 11, 1957, Ser. No. 689,590 7 (Ilaims. (Cl. 128-214) The present invention relates to a device for fluid transference and more particularly to a catheter for intravenous injection and transfusion.

There are, at present, a number of devices in use for transferring fluids intravenously to a patient through a needle introduced into a vein. In these prior devices, there is no way of introducing a short plastic catheter into the vein without going through the detailed operat1on of threading a catheter through a needle, withdrawmg the needle over and off the catheter and then connecting the catheter to another needle and then to a plastic tubing.

The present invention overcomes these disadvantages by providing a needle with a catheter therein, the catheter being adapted to be projected, with the needle, into the vein. The needle is then withdrawn leaving the catheter positioned in the vein. An added advantage of the present invention is the fact that it enables the catheter to be kept in a sterilized condition before use.

The invention comprises a device having a hollow needle, a catheter slidable in the needle, and an axially extensible and collapsible tubular member surrounding the catheter and having one end fixed with respect to the catheter remote from the free end thereof, said hollow needle being associated with the free end of the tubular member, the catheter being adapted to terminate within the needle when the tubular member is extended and to project from the needle when the tubular member is collapsed.

The invention will now be described with reference to the accompanying diagram in which:

Figure 1 is an elevation, partly in cross-section, of the device,

Figure 2 is an end view of that part of the device carrying the needle; and

Figure 3 is an end view of that part of the device carrying the means for attachment to a fluid reservoir.

In the embodiment showing the diagram, the device comprises a flexible catheter 1 which may be of plastic or any other suitable material. One end 1a of the catheter has means 2 aflixed to it for attachment to a fluid reservoir. Means 2 may consist of a tubular neck 3 having an enlarged portion 4 to which a tube (not shown) leading from a reservoir may be attached.

A tubular member 5, preferably a bellows, surrounds catheter 1 and is fixed at one end 5a to the neck 3 of means 2. In its extended position, bellows 5 does not extend as far as free end 1b of catheter 1. Bellows 5 carries perforations 12 allowing air to escape when the bellows is collapsed.

Fixed to free end 5b of bellows 5 is a thin walled hollow needle 6. As indicated in the drawing, needle 6 may be removably fixed to free end 5b of bellows 5 by means of an adapter 7 to which the needle may be threaded or otherwise attached. Free end 1b of catheter 1 terminates in needle 6 when bellows Sis fully extended. When bellows 5 is collapsed, catheter 1 projects substantially from the open end of needle 6.

To enable bellows 5 to be secured in the collapsed position, a cup-like housing 8 is attached to adapter 7 and extends back over part of the bellows. A disc 10 having projection 11 is rotatably mounted on neck 3 of means '2. Slots 13 in housing 8 are positioned to be engaged by projection 11 when bellows 5 is collapsed. The housing 8 is thus detachably secured to means 4, the

2,937,643 I Patented May 24, 1960 bellows being retained in a relatively dust proof container.

In the operation of the device, the assembly is supplied, in sterile condition with catheter 1 positioned inside both bellows 5 and the needle 6. Needle 6 is inserted in the vein and as soon as blood wells up in the needle, catheter 1 is pushed forward to enter the vein by moving disc 10 towards housing 8. Depending upon the length of catheter used, it can be seen that a substantial portion may enter the vein. As catheter 1 is pushed forward and bellows 5 is collapsed the air trapped inside the bellows escapes through perforations 12 rather than entering the vein. The blood in the needle, acting as a seal, further ensures that the air in the bellows will not enter the vein but will escape by means of the perforations. When catheter 1 has been pushed forward as far as possible bellows 5, now in collapsed position, is retained within cup-like housing 8 by the action of the projections on disc 11 engaging slots 13 in the housing. The needle is then withdrawn from the vein, drawing out a short portion of the catheter but leaving a substantial length of it in the vein.

Alternatively, of course, the device may be operated by drawing housing 8 back towards disc 10 to withdraw needle 6 from the vein, thus leaving a greater length of catheter 1 in the vein.

In an alternative embodiment of the invention, bellows 6 may be replaced by a flexible member, tubular in crosssection and helically formed so as to be extensible. The operation of this embodiment is the same as previously described.

What I claim as my invention is:

l. A device for transferring fluids comprising a hollow needle, a catheter slidable in the needle, an axially extensible and collapsible tubular member surrounding the catheter and having one end fixed with respect to the catheter remote from the free end thereof, said needle being associated with the free .end of the tubular member, the catheter being adapted to terminate within the needle when the tubular member is extended and to project from the needle when the tubular member is collapsed.

2. A .device for transferring fluids as in claim 1, ineluding a latching means associated with the ends of the tubular member to detachably secure the said tubular member in collapsed position.

3. A device for transferring fluids as in claim 1, wherein the tubular member is perforated bellows.

4. A device for transferring fluids as claimed in claim 2, wherein the latching means includes projections associated with one end of the tubular member which are adapted to be detachably secured in slots carried by means associated with the opposite end of the tubular member.

5. A device for transferring fluids as in claim 4, wherein said means associated with the opposite end of the tubular member comprises a cup-like housing extending back over part of the tubular member, said housing carrying slots in which said projections of the latching means are detachably secured when the tubular member is in collapsed position.

6. A device for transferring fluids as claimed in claim 1, wherein the'needle is detachably secured to the tubular member.

7. A device for transferring fluids as in claim 1 including means associated with the catheter for connection with a reservoir.

France Dec. 23, 1953 France June 18, 19.56

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
FR1064445A * Title not available
FR1123836A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3017884 *May 1, 1958Jan 23, 1962Ballard Dale HApparatus for injecting or infusing fluids into patients and method of making same
US3055361 *Apr 22, 1960Sep 25, 1962Deseret Pharmaceutical CompanyIntravenous catheters
US3185151 *Jun 19, 1962May 25, 1965Sorenson Res CorpCatheter placement unit
US3262448 *Nov 6, 1963Jul 26, 1966Sorenson Res CorpIntravenous catheter placement unit
US3370587 *Jul 17, 1962Feb 27, 1968Fernando R. VizcarraMethod of introducing a catheter into a body vessel
US3438373 *Mar 21, 1966Apr 15, 1969Voys Inc LeCatheter placement unit with unidirectional locking means to prevent catheter retraction
US3444860 *Jun 6, 1966May 20, 1969Harrell Osmah EAseptic catheter assembly with holder introducer
US3463152 *Jun 8, 1966Aug 26, 1969Sorenson Research CorpCatheter placement unit
US3474786 *Dec 4, 1968Oct 28, 1969Spademan Richard GeorgeCatheter adapted for fluid connection prior to insertion
US3840008 *Apr 18, 1972Oct 8, 1974Surgical CorpSafety hypodermic needle
US3937220 *Mar 4, 1974Feb 10, 1976International Paper CompanySterile aspiration catheter
US3991762 *Sep 30, 1974Nov 16, 1976Radford F RichardAspirating device for patient ventilation apparatus
US4327723 *May 13, 1980May 4, 1982Arrow International, Inc.Catheter shield
US4515592 *May 3, 1982May 7, 1985Arrow International, Inc.Catheter shield
US4568334 *Apr 25, 1984Feb 4, 1986Lynn Lawrence AIntravascular catheter preparation and dispensing container assembly
US4767409 *May 23, 1983Aug 30, 1988Edward Weck IncorporatedCatheter protective shield
US4967743 *Dec 1, 1988Nov 6, 1990Ballard Medical ProductsNeonatal closed system for involuntary aspiration and ventilation, and method
US5065754 *Jun 6, 1990Nov 19, 1991Ballard Medical ProductsAspirating catheter tube inserter
US5107829 *Apr 25, 1990Apr 28, 1992Ballard Medical ProductsNeonatal closed system for involuntary aspiration and ventilation, and method
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US5149326 *Jan 17, 1992Sep 22, 1992Baxter International Inc.Adjustable catheter contamination shield
US5215522 *Apr 5, 1991Jun 1, 1993Ballard Medical ProductsSingle use medical aspirating device and method
US5277177 *Jul 16, 1991Jan 11, 1994Ballard Medical ProductsSingle use medical aspirating device and method
US5611336 *Mar 30, 1995Mar 18, 1997Ballard Medical Products, Inc.For aspirating secretions from a medical patient's lungs
US5694922 *Aug 19, 1994Dec 9, 1997Ballard Medical ProductsSwivel tube connections with hermetic seals
US5769825 *Aug 20, 1996Jun 23, 1998Lynn; Lawrence A.Self-contained syringe and pharmaceutical packaging system for enclosed mixing of pharmaceutical and diluent
US6228065Jun 22, 1998May 8, 2001Lawrence A. LynnDisplacement activated medical check valve
US6494203Nov 12, 1999Dec 17, 2002Ballard Medical ProductsMedical aspirating/ventilating closed system improvements and methods
US8162890May 6, 2007Apr 24, 2012Flexicath Ltd.Catheter insertion apparatus and method of use thereof
US8613728Nov 6, 2006Dec 24, 2013Flexicath Ltd.Removable adapter for a splittable introducer and method of use thereof
EP0468316A2 *Jul 12, 1991Jan 29, 1992Abbott LaboratoriesSensor delivery device
EP2022279A2 *May 6, 2007Feb 11, 2009Flexicath Ltd.Catheter insertion apparatus and method of use thereof
Classifications
U.S. Classification604/163
International ClassificationA61M25/01
Cooperative ClassificationA61M25/0111
European ClassificationA61M25/01C2