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Publication numberUS3330278 A
Publication typeGrant
Publication dateJul 11, 1967
Filing dateJun 22, 1964
Priority dateJun 22, 1964
Publication numberUS 3330278 A, US 3330278A, US-A-3330278, US3330278 A, US3330278A
InventorsSantomieri Louis S
Original AssigneeSantomieri Louis S
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Hypodermic needle for a cannula placement unit
US 3330278 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

y 1, 1967 L. s. SANTOMIERI 3,330,278

HYPODERMIC NEEDLE FOR A CANNULA PLACEMENT UNIT Filed June 22, 1964 Z. 5 INVENTOR.

6 Louz'o' 5. 63 22502222221! 5 BY United States Patent 0 3,330,278 HYPODERIVHC NEEDLE FGR A (JANNULA PLACEMENT UNIT Louis S. Santornieri, Vaiiejo, Caiif. (1815 Pine St., Martinez, Calif. 94553) Filed June 22, 1964, Ser. No. 376,942 3 Claims. (Cl. 128-214.4)

This invention relates to hypodermic needles of the type which are employed in intravenous cannula placement units.

In this type of unit, the purpose is to enable a flexible plastic catheter tube or cannula to be inserted a desired distance into a vein after the initial puncture in the vein has been made by the needle. This arrangement has been found to give a greater range of movement, permits longer periods of installation, affords greater comfort to the patient, and with less risk of extravasation of the fluids being given, than is the case with the use of a needle alone.

All known previous units-while permitting of the ready insertion of a plastic cannula in a vein-thereafter retain the needle on an exterior portion of the cannula, which poses a hazard to the patient. If the sharp needle point is not safeguarded against damaging the cannula, it may possibly puncture the same or shear off a portion thereof with any relatively slight movement of the patient; this being an eventuality which could embolize or cause leakake of the intravenous fluids. Various devices are used to prevent such undesired occurrences, such as retracting the needle from the vein and then taping said needle in place on the arm or other member of the patient, or shielding the needle in one way or another, or undertaking other none too satisfactory expedients, frequently to the discomfort of the patient.

It is, therefore, the major object of the present invention to provide a hypodermic needle of the type and for the purpose described-so constructed that it may be quickly and easily removed from association with the cannula as soon as the needle is withdrawn from the vein.

Specifically, the needle comprises a pair of longitudinal tubular halves or sections matching each other and adapted together to surround the cannula in relatively slidable relation thereto; a further important object of the invention being to provide novel means to disengageably hold the needle sections in the necessary cooperative relation surrounding the cannula for insertion thereof in a vein by said bivalve needle, but enabling the sections to be later disengaged from each other and removed from said I cannula without disturbing the latter.

A further object of the invention is to provide a hypodermic needle for a cannula placement unit which is designed for ease and economy of manufacture.

A still further object of the invention is to provide a practical, reliable, and durable hypodermic needle for a cannula placement unit and one which is exceedingly effective for the purpose for which it is designed.

These objects are accomplished by means of such structure and relative arrangement of parts as will fully appear by a perusal of the following specification and claims.

In the drawings:

FIG. 1 is a perspective view of the improved hypodermic needle, with the cannula and the retaining sleeve shown separated therefrom.

FIG. 2 is a sectional elevation of the needle as engaged by the retaining sleeve and with the cannula projected part way into said needle.

FIG. 3 is a similar View of the needle, but with the retaining sleeve removed and the cannula projected through the needle.

FIG. 4 is a side elevation of the needle, with the parts thereof separated and shown therebetween.

FIG. 5 is a cross section taken on line 55 of FIG. 4.

Referring now more particularly to the drawings and to the characters of reference marked thereon, the needle, indicated generally at 1, is tubular and comprises two substantially identical sections 2 and 3, separated along the diametral plane of the needle, but normally engaging each other in matching edge to edge relation in such plane.

At its outer or forward end, the needle is formed with a sharp pointed bevel tip 4, which is cut across both sections 2 and 3.

At its inner or rear end, the needle 1 is mounted in a cylindrical supporting base 5 of materially greater diameter than the needle and concentric therewith.

More particularly, the lower section 3 of the needle is rigid with and secured to the base 5 which-upwardly from said lower section and for the full width thereof and for the length of said base-is formed with a parallel sided upwardly opening slot 6 as shown in FIG. 5.

The upper section 2 of the needle is rigid with and secured in a plug 7 of the same length and width as the slot 6 and having a snug but removable fit therein. When the plug 7 is firmly fitted in place in the slot 6 the needle sections 2 and 3 are disposed in matching edge to edge engagement with each other throughout their length; said edges, if desired, being suitably adhesively but separably bonded together.

At its rear end the plug 7 is provided with a lip 8 projecting beyond the base and which lip is adapted on its uudeside for finger engagement; the upper face of the plug 7 and lip 8, when the plug is in place in the base 5, forming a continuation of the circular contour of said base as shown in FIG. 1. s

A retaining sleeve 9 of plastic or other suitable material initially engages in removable but snug fitting relation over the base 5 from the rear end thereof; such sleeve embracing, of course, the plug 7 to prevent accidental dislodgment thereof from the base.

At its rear end the sleeve 9 is attached to a sanitary, tubular and flexible enclosure 10 for the cannula 11 which is adapted to be projected through the needle and into the vein penetrated by said needle.

In operation, after the needle 1 has been advanced to puncture and enter the vain, the cannula 11 is fed through the needle and projected the desired distance into the vein; the needle then being withdrawn frorn'the vein and slid rearwardly on the cannula 11 and into the clear.

Thereafter, the needle may be easily and quickly disengaged from the cannula in the following manner:

The sleeve 9 is first backed off the base, and the plug 7 is then pried upwardly by means of a thumb nail or the like inserted under the lip 8. As the plug is rigid with the upper section 2 of the needle, said section will be disengaged from the lower section 3 by such prying up movement of the plug; the tip end of the section 2 then hearing on the corresponding end of the lower section 3 as a fulcrum. As soon as the plug 7 clears the slot 6, the two needle sections will separate and move clear of each otherand of the cannulaand may then be set aside. During the above operation, the cannula withdraws from slot 6, remains undisturbed, and thereafter is used in the normal manner.

From the foregoing description, it will be readily seen that there has been produced such a device as substantially fulfills the objects of the invention, as set forth herein.

While this specification sets forth in detail the present and preferred construction of the device, still in practice such deviations from such detail may be resorted to as with the cannula disposed sing a puncturing tip at do not form a departure from the spirit of the invention, 'as defined by the appended claims.

7 Having thus described the invention, the following is claimed as new and useful and upon which LettersPatent V is desired:

V 1. In an intravenous cannula placement unit, a tubular vein-puncturing needle adapted to receive a cannula therethrough in slidable relation, the needle comprising separate longitudinal half sections togetherhavone end, and means at the other end of the needle sections'detachablyconriecting said needle sections together; said means including a relatively large base member at the otherv end of the needle, one needle section being rigidly secured in said base member, the latter having a longitudinal slot extending away from the open face of said one needle section to the 7 adjacent side of the member and at least as wide as said section, a plug in'which the adjacent end of the other needle'section is rigidly secured, said plug removably engaging in and filling the slot, and means normallylpreventing removal of the plug from the slot.

2. In an intravenous cannula placement unit, a tubua slot, and means normally preventing removal'of the plug lat vein-puncturing needle adapted to receive a cannula 7 her at the other end of the needle, one needle section be- "ing rigidly secured in 'said 'base member, the latter having a longitudinal slot extending away from the open face ofsaid one needle section to the adjacent side of the mem- =ber and at least as wide as said'section, a plug in which the adjacent end of the other needle section is rigidly secured, said plug removably engaging in and filling the 'therethrough in slidable relation, the needle comprising-- separate longitudinal half sections together having a puncturing tip at one end, a relatively large base memfrom the slot comprising a sleeve removably engaging over the base and plug and preventing movement of the plug in a directionsradially of the needle sections.

3. Inan intravenous cannula placement unit,'a tubu- "lar vein-puncturing needle adapted to receive acannulai therethrough in slidable relation, the needle comprising separate longitudinal half sections together having a puncturing tip at one end, a relatively large base member at the other end of the needle, one needle section being rigidly secured in said base member, the latter having a longitudinal slot extending away from the open face of said one needle section to the adjacent side of the member 7 and at least as wide as said section, a plug in which the adjacent end of the other needle section is rigidly secured,

means normally preventing removal of the plug from the slot,' and a lip for finger engagement projecting from the rear said plug removably engaging in and'fillingthe slot,

end of the plug.-

D. L. TRULUCK, Assistant Exa mz'nef.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US673598 *Jul 27, 1900May 7, 1901Carl B DolgeVein opener and clamp.
US2566499 *Feb 14, 1950Sep 4, 1951Bruno RichterExpansile surgical needle
US2829644 *Oct 28, 1954Apr 8, 1958Anderson Lynn HVenous catheter
US2842133 *Feb 27, 1957Jul 8, 1958Surgic Company LtdSurgical or medical vein dilating device
AT154241B * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3359978 *Oct 26, 1964Dec 26, 1967Smith Jr Raymond MGuide needle for flexible catheters
US3382872 *Jun 7, 1965May 14, 1968Melvin L. RubinVenous catheter and needle
US3444860 *Jun 6, 1966May 20, 1969Harrell Osmah EAseptic catheter assembly with holder introducer
US3459184 *Nov 4, 1966Aug 5, 1969Voys Inc LeIntravenous catheter placement unit
US3584625 *May 22, 1969Jun 15, 1971Illinois Tool WorksDetachable guide needle
US3596658 *May 22, 1969Aug 3, 1971Illinois Tool WorksDetachable guide needle
US3598118 *Nov 4, 1968Aug 10, 1971Warren Joseph EMethod of introducing an intravenous catheter into the vascular system
US3603311 *Feb 19, 1970Sep 7, 1971Illinois Tool WorksSliding wedge-type removable guide needle
US3610239 *Feb 19, 1970Oct 5, 1971Illinois Tool WorksDetachable hollow guide needle
US3677243 *Sep 24, 1971Jul 18, 1972Extracorporeal Med SpecSeparable surgical needle
US3677244 *Aug 4, 1969Jul 18, 1972Extracorporeal Med SpecRemovable catheter needle
US3682173 *Oct 16, 1970Aug 8, 1972Vicra Sterile IncSeparable catheter insertion device
US3688773 *Apr 16, 1970Sep 5, 1972Weiss SolDevice for performing a tracheostomy and other surgical procedures
US3766915 *Dec 21, 1971Oct 23, 1973Illinois Tool WorksPlastic needle holder
US3817250 *Oct 24, 1972Jun 18, 1974Int Medical Devices IncInstrument for performing a tracheostomy and other surgical procedures
US3886946 *Nov 9, 1973Jun 3, 1975Hyde Vernon ETrachea instrument
US3908657 *Jan 15, 1973Sep 30, 1975Univ Johns HopkinsSystem for continuous withdrawal of blood
US4147165 *Apr 7, 1977Apr 3, 1979Tauschinski Stefan OSeparable needle for inserting a catheter into the blood stream
US4345596 *Dec 23, 1981Aug 24, 1982Janis Marie YoungArterial catherization device
US4377165 *Jun 8, 1981Mar 22, 1983Luther Medical Products, Inc.Cannula needle for catheter
US4413992 *Dec 2, 1981Nov 8, 1983Baxter Travenol Laboratories, Inc.Cannula support assembly and its method of manufacture
US4496352 *Oct 6, 1983Jan 29, 1985Baxter Travenol Laboratories, Inc.Cannula support assembly and its method of manufacture
US4573448 *Oct 5, 1983Mar 4, 1986Pilling Co.Method for decompressing herniated intervertebral discs
US4574456 *Sep 7, 1983Mar 11, 1986Baxter Travenol Laboratories, Inc.For cannulas
US4743265 *Apr 23, 1986May 10, 1988Dij Catheter CorpArticulated catheter placement device
US4978334 *Sep 8, 1988Dec 18, 1990Toye Frederic JApparatus and method for providing passage into body viscus
US5221269 *Oct 15, 1990Jun 22, 1993Cook IncorporatedGuide for localizing a nonpalpable breast lesion
US6405733Jul 11, 2000Jun 18, 2002Thomas J. FogartyDevice for accurately marking tissue
US6564806Feb 18, 2000May 20, 2003Thomas J. FogartyDevice for accurately marking tissue
US6722371Oct 27, 2000Apr 20, 2004Thomas J. FogartyDevice for accurately marking tissue
US6752154Aug 22, 2001Jun 22, 2004Thomas J. FogartyDevice for accurately marking tissue
US6752767Oct 15, 2002Jun 22, 2004Vivant Medical, Inc.Localization element with energized tip
US7160292May 1, 2003Jan 9, 2007Vivant Medical, Inc.Needle kit and method for microwave ablation, track coagulation, and biopsy
US7197363Oct 15, 2002Mar 27, 2007Vivant Medical, Inc.Microwave antenna having a curved configuration
US7311703Jul 18, 2003Dec 25, 2007Vivant Medical, Inc.Devices and methods for cooling microwave antennas
US7318824Oct 7, 2004Jan 15, 2008Vivant Medical, Inc.High-strength microwave antenna assemblies
US7322360Mar 10, 2004Jan 29, 2008Thomas J. FogartyDevice for accurately marking tissue
US7468042Apr 27, 2004Dec 23, 2008Vivant Medical, Inc.Localization element with energized tip
US7846108Dec 10, 2008Dec 7, 2010Vivant Medical, Inc.Localization element with energized tip
US8068921Sep 29, 2006Nov 29, 2011Vivant Medical, Inc.Microwave antenna assembly and method of using the same
US8251955 *Dec 3, 2008Aug 28, 2012Brainlab AgCatheter stylet with catheter accommodating lumen
US8292880Nov 25, 2008Oct 23, 2012Vivant Medical, Inc.Targeted cooling of deployable microwave antenna
US8690868Dec 18, 2006Apr 8, 2014Covidien LpNeedle kit and method for microwave ablation, track coagulation, and biopsy
US8808282Mar 5, 2007Aug 19, 2014Covidien LpMicrowave antenna having a curved configuration
US8870828 *Dec 4, 2012Oct 28, 2014Fenwal, Inc.Phlebotomy needle assembly and frangible cover
US20110224681 *Mar 10, 2011Sep 15, 2011Boston Scientific Neuromodulation CorporationSystem and method for making and using a splitable lead introducer for an implantable electrical stimulation system
US20130096462 *Dec 4, 2012Apr 18, 2013Fenwal, Inc.Phlebotomy Needle Assembly And Frangible Cover
DE2331333A1 *Jun 20, 1973Jan 10, 1974Vicra Sterile IncInfusionsbesteck
DE2735037A1 *Aug 3, 1977May 18, 1978Sorenson Research CoVorrichtung zur festlegung der nadel eines venen-punktionsgeraetes
Classifications
U.S. Classification604/161, 606/108
International ClassificationA61M25/06
Cooperative ClassificationA61M25/065
European ClassificationA61M25/06E