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Publication numberUS1592462 A
Publication typeGrant
Publication dateJul 13, 1926
Filing dateMar 8, 1921
Priority dateMar 8, 1921
Publication numberUS 1592462 A, US 1592462A, US-A-1592462, US1592462 A, US1592462A
InventorsJohn Macgregor
Original AssigneeSanno & Hoskins Inc De
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Guard for hypodermic needles
US 1592462 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

'mesita my 13,1926. j

UNITED s-TAT s' PATENT voFi-ici-z..


GUARD B' YPODRRKIC Hmm l Allplloation Med latch 8, 1981. Serial Ib. 450,308.

'lhe object of my invention is to provide suitable protection for a hypodermic needle during the process of sterilization separately In general construction, my invention consists in providing the needle hub in which the need e is fitted with a guard which may be placed .over the needle and detachably secured to the hub,'the length of the guard being suicient to'extend beyond the point of the needle and thereby prevent the same coming in contact with the sterilizing ve'ssel or any other object which might cause injury to the needle.

In the preferred form of my improvement, the hub is provided with a threaded portion upon which is screwed the tubular protecting ard, and desirably, the screw joint is magg left handed so that with the hub attached to the syringe with a right needle with the for the a clear; F 3 is a siliied'tview of the needle `hu handed screw thread, the removing of the guard would tend to tighten the hub in'position on the ge rather than loosen it.

With the a ve and other objects in view, the nature of which'will be more fully understood from the description hereinafter,`

the invention consists in thefnovel construction of guardsv for hy dermic needles, as hereinafter more fully escribed and dened in the Referring to the drawings; Fig. 1 illustrates the end of a in e with a hypodermic needle attache an with the guard unscrewed and in the act of being removed; Fig. 2 is a sectional view of theA hypodermic ard removed and with the usual tine wire inserted through the needle ure therein remaini andn e, as shownfinFig. 2, butwith the needle ard screwed in position, the latter being s'dwn'in section; Vand Fi 4 is a sectional viewillustrating a vesse containing sterilizing fluid and inA which the hypoderixiicV needle protected by its ard is placed during t e process of sterilizing.v Y5 represents the end of' a hypodermic Y and is provided-with a nozzle 6 a right .handed screw thread 'I there- 0in-8 repnents a needle hub having aY screw threaded socket 9 adapted to screw vided near its base with a screw threa containi tightly'upon nonle end 6 ofthe The needle hub 8 is provided with an extended nipple 10 of relatively small diameter through which the h odermic needle 14 extends and in which it may be attached in any suitable manner. This nipple 10 is (pro- 11 .preferably of the left handr character. represents a fine wire which isY temporarily inserted through the tubular aperture of the needle, but which is removed when -tho needle is applied to the syringe. 13 represents a guar of cylindrical cross section and tubular in shape and is internally screw threaded at one end to screw upon the left hand thread 11 of the nipple forming a part of the hub 8. kThis guard 13-is of a length somewhat greater than the needle 14 and preferably greater than the end of the projecting part of the wireV 12, so'that when it is in-position, as indicated in Fig. 3, it ma not. only act as a guard to the needle itsel Manson, cia'y minnaar, nssacmrsnrrs, Assioma or omi-nm ro nl sumo a nosimis. me., .a conronarion or minimum t but also to the wire 12, if the same happens When it is desired to sterilize the hypodermic needle, the guard 13 is screwed upon the ni ple 410 and the hub and its needle with t e guard attached may be detached from the syringe body and these parts may then be placed in the sterilizing vessel 15 the sterilizing iluid 16, as indicated in ig. I4. During this operation of sterilizing (which may include boiling) the wire 12 may be inserted or omitted, butuprefa of erably omitted, so as to leave the can the needle free for the entrance of the steryilizing fluid. -It Awill be seen that the guard 13 being open at the bottom permits the free access o'f the sterilizing fluid' to the needle and this may be facilitated by providing, i

desired, one ormore rfor'ations 17 in the side wall of the guar The guard permits the Huid to completely surroundthe needle an to circulate thro h the canula thereof as -well as outside, an sterilize the needle thoroughly. Even if the needle be put into the sterilizerwithmany other instruments (one of which is shown in Fig. 4) instead ofV making a separate treatment of Vthe needle by itself the risk ef injury to other instruments in the the needle from`A A steriliz'er is completely avoided.

Aside from the use of my improved guardfor the more important eration, it may be employed as part synne equipment t0 protectthe needle when lio not in use. While have shown the guard manner o attaching the' hub to the nozzle of the syringe, but prefer a screw threaded connection as shown. While the special function of the guard is to protect or shield the needle during sterilization, nevertheless there is an additional advantage obtained, namely, that of providing the physician with an absolutely sterile needle at the time of use for injection. After the hub, needleV and guard, with or 1without the syringe proper, have been sterilized as a complete unit, the guard may be removed.l bfy a twist of the ingers and the injection may be made without the needle itself being touched with the lingers.

ln some cases the needle may be attached to the syringe in some other manner, such as by being tted directly to the nozzle end 6 and in such case, the guard would be detachably secured to the nozzle itself, which would be substantially equivalent to having the needle hub 8 as an 1integral or iXed part of the syringe body. j It will now be apparent that l have devised a novel and useful construction which embodiesthe features ofadvantage enumerated as desirable, and while l have in the present instance Vshown and described the preferred embodiment thereof which hasl beenffound in practice to give satisfactory and reliable results, it is toY be understood that l do not restrict myself to the details,as the same are susceptible of modification in various particulars without departing from the spirit or scope of the invention.`4 D

Having now described my invention, what I claim as new and desirey to secure by Letters Patent, is :'-V

1; 1n a device ofthe character stated, a

"hypodermic needle and hub in which it is held and whereby it, may be detached from a Vsyringe body, the hub provided with a tapered nipple through which the needle extends and said nipple screw threaded only adjacent to its-base close to the hub part,

Y combined' with a tubular guard normally open on its end and detachably secured to the threaded nipple of the hub by being screwed thereon and also having a length whereby it extends at all times beyond the meagre@ point of the needle, said guard having a smooth interior diameter considerably larger than the diameter of the needle and the tapered nipple so that the disinfectant fluid may contact with both the needle and tapered nipple, the construction being such that the hubassociated With the needle and guard may be detached from the syringe body when they are to be placed in an antiseptic fluid or when being stored.

2. In a device of the character stated, a hypodermic needle and a hub in which it is held and whereby `it may be detached from a syringe body, said hub screw threaded on its inside for attachment to said syringe -body and provided with a tapered nipple through which the needle extends and said nipple screw threaded on its outer surface adjacent to the hub part, one of said screw threads being right handed and the other` left handed, combined with a tubular guard normally open on its end'and detachably secured to the nipple of the hub by being screwed thereon, said guard extending beyond the point of the needle and considerably larger than the diameter of the needle and tapered nipple beyond the screw thread thereof so that the disinfectant Huid may contact with both the needle and the tapered nipple, the construction being such that the hub associated with the needle and guard may be detached from the syringe body when they are placed in an antiseptic fluid and whereby the guard is detachable from the nipple and may be unscrewed from the nipple `without loosening the hub upon the syringe body.

3. In a hypodermic syringe, a body, a needle, and means comprising a hub having la screw threaded nipple for holding the both the needle and the nipplesupporting it may be fully shielded and at the same time freely subjected to a sterilizing Huid passing into the chamber of the guard while it protectsthe needle against injuryhsaid guard being detachable to expose the sterilized needle for immediate use by the physician Without touching it with the iingers. L l

lln .testimony of which invention, I hereunto set my hand.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2566428 *Dec 20, 1947Sep 4, 1951Abbott LabDisposable ampulla syringe
US2578813 *Dec 20, 1947Dec 18, 1951Paul KollsmanDevice for hypodermic injections
US2697437 *Sep 1, 1949Dec 21, 1954James Everett SamuelHypodermic needle mounting
US3642123 *May 20, 1969Feb 15, 1972Knox Lab IncGuard enclosed hypodermic needle and syringe receptacle
US3976070 *Feb 25, 1975Aug 24, 1976Mark DumontNeedle reinforcing means for small gauge hypodermic needles
US5015235 *Sep 15, 1989May 14, 1991National Carpet Equipment, Inc.Syringe needle combination
US5328484 *Jul 30, 1993Jul 12, 1994Brice SomersNon-reusable syringe for medical purposes
US5431280 *Mar 17, 1994Jul 11, 1995Humagen Fertility Diagnostics Inc.Closure cap for holding pipets during shipping
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US8287516Mar 21, 2005Oct 16, 2012Unomedical A/SInfusion set
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US8562567Jul 16, 2010Oct 22, 2013Unomedical A/SInserter device with horizontal moving part
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US8945057Aug 2, 2007Feb 3, 2015Unomedical A/SCannula and delivery device
US9186480Apr 15, 2008Nov 17, 2015Unomedical A/SApparatus for making a catheter
US9211379Feb 28, 2007Dec 15, 2015Unomedical A/SInserter for infusion part and infusion part provided with needle protector
US9254373Dec 18, 2009Feb 9, 2016Unomedical A/SMedical device comprising adhesive pad
US9278173Dec 22, 2006Mar 8, 2016Unomedical A/SDevice for administration
US9320869Oct 9, 2015Apr 26, 2016Unomedical A/SApparatus for making a catheter
US9415159Mar 30, 2011Aug 16, 2016Unomedical A/SMedical device
US9440051Oct 23, 2012Sep 13, 2016Unomedical A/SInserter for a multiplicity of subcutaneous parts
US9533092Aug 6, 2010Jan 3, 2017Unomedical A/SBase part for a medication delivery device
US9566384Feb 19, 2009Feb 14, 2017Unomedical A/SInsertion device with horizontally moving part
US9724127Sep 23, 2011Aug 8, 2017Unomedical A/SInsertion system and insertion kit
US20080215003 *Feb 22, 2006Sep 4, 2008Grete KornerupGateway System
US20100004597 *Aug 2, 2007Jan 7, 2010Unomedical A/SInsertion Device
US20100030155 *Aug 2, 2007Feb 4, 2010Steffen GyrnCannula and Delivery Device
US20100137829 *Feb 1, 2008Jun 3, 2010Nielsen Henrik BoejeInjection Gateway
US20100140125 *Jan 23, 2008Jun 10, 2010Orla MathiasenInjection Site for Injecting Medication
US20100228226 *Jul 2, 2008Sep 9, 2010Jens Egebjerg NielsenInserter Having Two Springs
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US20100286615 *Jul 2, 2008Nov 11, 2010Steffen GyrnInserter having bistable equilibrium states
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WO1988006463A1 *Feb 24, 1988Sep 7, 1988The Secretary Of State For Defence In Her BritanniHypodermic needle and case assembly
U.S. Classification604/192, 206/365, 604/199, 604/241
International ClassificationA61M5/32, A61M5/34
Cooperative ClassificationA61M5/34, A61M5/3202
European ClassificationA61M5/32B, A61M5/34