PH26491A - Device for firmly locking a syringe on a body which maybe coupled thereto - Google Patents

Description

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BACKGROUND OF THE INVENTION

The present invention relates to a device for looking,in a firm and not reversible way,a syringe on a body thereto the syringe 1s coupled. :

Cg As ig known, syringes are provided with a needle for withdrawing from or injecting into a bottle or

Co the like, or shaped end of & small sucking or discharg- ne ing tube,a liquid, generally Provided with pharmacologic properties:to that end, the syringe may bee in a free . 10 condition and freely coupled to a bottle, or it may be mounted on an apparatug having a latching member at the bottle mouth, Such an apparatus, comprising a sealed chamber therein the needle is usually housed and therefrom the needle may exit only when the apparatus is firmly mounted on the mouth of a bottle or the like,is disclosed ang illustrated by the

U.S Patent N° 4,576,211. oo . For some applications and cages it may be . 3 dangerous or undesirable to allow for the syringe ; 20 to disengage from the body thereto it hag been

RE " coupled:for example it would be dangerous to detach ol the syringe from the apparatus disclosed by the above 4, mentioned US Patent, or remove it from the shaped end oo of an intravenous injection small tube, thereinto

CO - 8 very dangerous pharmaceutical substance, such as 7 a cytostatic drug, may be injected by the syringe. ’] SUMMARY OF THE INVENTION :

Ll i Thus, the main object of the Present invention ps 1s to provide such a device adapted for preventing

Ra 30 8 syringe from being disengaged from a body thereto a the syringe has been coupled, }

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According to one aspect of the present : invention the above and yet other objects are achiev ed by a device comprising a body provided with members for coupling it to the end of a bottle or the like or of a small tube ang having a seat tor housing the free end of a syringe, thereat there is formed a hole for allowing for the syringe needle to pass through, and comprising a8 syringe the free end of which may be housed in said seat, with the syringe needle extending through said hole, in said - body seat and on said syringe complementary and cooperating threads being formed for threadedly coupling said syringe and body, wherein on the opposite side surfaces of said body,at said seat, and respective~ ly on the end of said syringe to be inserted into said seat, or vice versa, there are Provided radially

Projecting longitudinal teeth ang respectively. slanted resilient fins, said fins being deflected by ; said teeth as said syringe is threaded on said body ot 20 and abutting against said fins go as to prevent the syringe from being screwed off saiq body. a BRIE¥ DESCRIPTION OF THE DRAWINGS » For better understanding the structure ang “ characteristics of the device according to the invention, a preferred embodiment thereof will be +] disclosed thereinafter, with reference to the accompany-

Co ing drawing, where: fig.l schema tically shows an axial longitudinal id cross-section of the device,with its parts in an i 30 assembled condition,and ol fig.2 is a cross-sectional view of the device, wo taken along the line IT-IT of rig.1, o ee bn cafe: Sl. a wo | Cabs - ) }

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DESCRIPTION OF THE PREFERRED EMBODIMENT

— =f ZA RED EMBODIMENT

The device illustrated in the drawing comprises a body 1,vwhich is provided with members (which have not be shown for simplicity and since they may be made in different ways) for fixing it at the mouth of ag drug holding bottle or the like, therefrom a tubular cylindrical wall 2 projects which defines a seat therein the free end 3 of a : syringe 4 may be housed, with the syringe needle 5 extending through a hole formed at the center of said seat,

In the embodiment being disclosed, the body 1 (an end portion of which is shown in the drawing) oe consists of an apparatus like that disclosed in the

US Patent 4,576,211 and adapted for engaging, under : : ~ safe conditions, a drug holding bottle to a syringe:

Lo the needle 5 is firmly locked on the body 1 ang a collar 6 projects therefrom werewith the free end - of the syringe is engaged through a thread 7 formed

BE 20 inside the syringe free end,

It should be apparent that the body 1 may od be different from the body ot the mentioned US Patent,

J For example, the body 1 may be Provided with ag oo tubwlar cylindrical wall extending on an opposite - i side to the wall 2 ang which may be screw engaged / 25 on or forced onto the mouth ot a bottle or the like; : | or on the lug 8 of the body 1 the tree end of a : small tube may simply fitted on the other end ot i} which an epicranial needle may be mounted for carrying

Co 30 out venous transfusiong,

Sa As shown in the drawing, on the outer surface oo oo offen Srl.

, . ! Co —5- of the syringe end 3 there is formeq i tooth arrangment consisting of a continuous plurality of teeth 9 which longitudinally extend and the surfaces of which are slanted as shown in fig, 2.

From the inner surface of the tubular wall 2 resilient and slanted fins 10 Project which cooperate with the teeth Y:as 1+ should be apparent, as the syringe is threaded to the seat or the body 1, : the fins 10 will be deflected by the teeth 9 thereby allowing for the syringe to freely rotate to be firmly coupled to the body 1.0n the other hand, if, Te after having coupled the syringe to the body, one tries to disengage it, then the fins 10(or at least some of them) will abut with their free ends against the - 15 teeth 9, thereby Preventing the syringe from being . . "rotated in an anticlockwise direction(with respect

J | to fig.2):in this way the syringe will be held firmly pa coupled to the body 1... . : Te It should be apparent that the teeth may ae 20 be formed on the inner surface of the tubular wall 2 . and that the fins may project from the outer : surface of the syringe end to be inserted into the 3 seat of the body 1,with the same results achieved 4 by the embodiment shown in the drawing, 7 4 = ] | Fam t cramer Sil a Fs iss, i !

Claims (6)

1. : CLAIMS }
2. : 1. A device for transferring liquids, said device comprising: (a) a syringe having a working end, the working end of said syringe having a radially inwardly facing surface and a radially Coe outwardly facing surface: (hb) a syringe Projecting from the working end of - said syringe; : | {c) 2 hody having a seat sized, shaped, and Positioned to receive the working end of said syringe; (d) said seat having =a radially inwardly facing } : surface, a radially outwardly facing surface, and a hole sized, shaped, and positioned to . allow said syringe needle tn pass therethrough; : {(e) one of said radially inwardly facing surface and said radially outwardly facing surface of the working end of said syringe and said : radially inwardly facing surface sand 2aid radially outwardly facing surface nf said . : seat having threads far coupling said syringe co to said body; and (Ff) the working end of said syringe and one of : said radially inwardly facing surface and oo said radially outwardly facing surface of said seat having: ‘ (i) complementary and cooperating teeth and : a0 (ii) slanted and resilient fins that permit 1 : the threading of the working end of said lao ORIGINAL 9 Cy syringe into said seat hut that permit ’ the unthreading of the working end of : said syringe from said seat. . | 2. A device as recited in claim 1 wherein: (a) said threads on said gsvringe are internal ; threads formed on the working end nf said i svringe; and (h) said threads aon said hody are external - threads formed on the radially outwardly facing surface of said seat.
3. 3. A device as recited in claim 1 wherein: (a) said teeth are formed on an external surface of said syringe and project outwardly from ) said syringe toward said seat; and (kh) said slanted and resilient fins are formed in } said radially inwardly facing surface of said . seat and project inwardly toward said ‘ syringe,
4. 4. A device as recited in claim 1 wherein: ) (a) said hody comprises a lug; {b) said lug projects away from said seat; ; (cc) said syringe needle projects through said : . lug; and : Ba - : (d) a tube can he coupled on said lug.
5. 5. A device as recited in claim 1 wherein: ; (a) said body comprises a major part and a minor Ny part in the form of a sleeve press fit inte : said major part and having a radially outwardly facing surface; : : Co BAD ORIGINAL J

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   (h} a collar is formed on the radially outwardly facing surface of said minor part of said : hody; | : (ec) said threads for coupling said syringe to said hody are located on said radially inwardly facing surface of the working end of © said syringe; and | Co 1d) said collar on the radially outwardly facing surface of said minor part of said hody - "engages said threads an said radially inwardly facing surface of the working end of said syringe,
6. 6. A device as recited in claim 1 wherein said svringe needle is part of said body, Inventors: LUIGI VALENTINI MARIO COCCIA ! — laxo ora P i