US2244969A - Ampoule syringe - Google Patents

Description

2 Sheets-Sheet 1 ATTO INVENTOR. Arfhur' E. Smfh.

June 10, 1941. A. E. SMITH v AMPOULE SYRINGE Filed May 20, 1940 2 W X4 www June 10, 1941. A. E. SMITH AMPOULE SYRINGE Filed May 20, 1940 2 Sheets-Shee'fI 2 Patented June 10, 1941 UNITED STATES PATENT oFl-"lcE AMPOULE sYmNGE Arthur E. smith, Los Angeles, Calif. Application May zo, 1940, serial Nofsaauo 9 Claims.

This invention relates i to improvements in hypodermic syringes.

Thergeneral object of the invention is to provide a novel syringe of the ampoule receiving type which is adapted for making fresh anaesthetic solutions prior to injection.

Another object of the invention is to provide a novel syringe of the ampoule receiving type wherein a fresh solution is prepared in the ampoule after the ampoule is placed in the syringe.

A further object of the invention is to provide a syringe of the above mentioned type wherein the ampoule is firmly seated in the syringe before the solution is mixed. v

A still further object of the invention is to provide a syringe of the above mentioned type including a novel plunger mechanism which includes means operable to cause the mixture of a fresh solution in the ampoule.

Other objects and the advantages of this invention will be apparent from the following description taken in connection with the accompanying drawings, wherein;

Fig. 1 is a fragmentary central VlongitudinalY sectional lv iew partly in elevation of my improved syringe with an ampoule member therein;

Fig; 2 is a fragmentary view similar to Fig. 1 showing the upper ampoule stopper punctured;

Fig. 3 is a fragmentary view similar to Fig. 2

showing the syringe plunger forcing the upper ampoule stopper towards the discharge end;

Fig. 4 is a reduced fragmentary side elevation of the syringe shown in Fig. 1 showing the head member in an open position;

Fig. 5 is a fragmentary central longitudinal sectional View partly in elevation showing a modified form of syringe and ampoule;

Fig. 6 is a fragmentary view similar to Fig. 5 showing the upper ampoule stopper punctured;

Fig. 7 is a fragmentary view similar to Fig. 6 showing the upper ampoule stopper being forced towards the discharge end; and

Fig. 8 is a fragmentary central longitudinal sectional view of a modified form of ampoule.

Referring to the drawings by reference characters I have indicated my improved syringe generally at I0. As shown the syringe I includes a barrel portion I2 the lower portion of which includes a front or tip member I3. The tip I3 includes a reduced threaded portion I4 and has a reduced hole I therethrough.

The syringe I 0 further includes a rear member Iwhich includes a base portion II having deaperture 42 therein.

(cl. 12s-218.1)

pending ears I8 thereon which are recessed as at I 9 to receive pivot pins 20 on the barrel I2.

The head member I6 has a hole 2l therethrough in which a sleeve member 22 is secured. The sleeve member 22 includes an enlarged flange portion 23 which is spaced a predetermined distance above the top of the head member I6 and positioned vin the space between the flange 23 and the head member a finger grip member 24 is provided. v

The sleeve member 22 has a recess 25 therein opening through the bottom thereof and a reduced aperture 26 communicating with the recess and opening through the top. The side walls of the sleeve 22 have a pair of opposed elongated slots 21 -therein opening into the recess 25 and through the bottom of the sleeve. The lower end of the sleeve 22 is inclined from the side of one of the slots V2'I to the side of the other slot 2'I to provide cam surfaces as indicated at 28.

Positioned in the sleeve aperture 26 a shank member 29 is provided which includes an enlarged head 36 positioned in thesleeve recess 25. The head 30 has opposed `extending lugs 3I thereon which in one position of the head 30 are positioned in the sleeve slots 21 as shown in Fig. 1 and in another position of the head engage the cam surfaces 28.

' The headV 30 has an open bottomed recess 32 therein and the shank 29 has a coaxial bore 33 therein which opens through the top thereof and communicates with the head recess 32.

Postionedin the bore 33 I provide a plunger rod 34 the'upper portion of which is externally threaded as at 35 to engage similar threads of a threaded recess 36 in a cross bar 31. The plunger rod 34 has a bore or recess 38 therein which opens through the bottom thereof and terminates adjacent the threaded portion 35 (see Fig. 2).

` Positioned in the plunger rod bore 38 adjacent the lowerend thereof I provide a plug member 39' which includes'an enlarged flanged head portion 46 which extends over the lower end of the plunger rod 34 toiprovide an enlarged plunger head. The plug member further has reduced Within the plunger rod b'ore 38 I provide a slide bar 43 of a predetermined length which'is connected to an enlarged ring member`44 surrounding the' plunger rod 34 by a pin 45 positioned in opposed elongated apertures 46 in the plunger rod adjacent the cross bar 31. j

Secured to the slide bar 43 and projecting beyond `the lower endthereof I provide a reduced rod 41 having a sharpened lower end which is Vpositioned in the aperture 42 of the p1ug member 39. Surrounding the rod 41 between the plug 39 and the slide bar 43 I provide a coiled expansion spring 48 which resiliently urges the slide bar 43 to a retracted position towards the cross bar 31.

When the slide bar 43 is in a fully retracted position as shown in Figs. 1 and 3 the sharpened lower end of the rod 41 is above the lower surface of the plunger rod head 40. Positioned in the syringe Abarrel I2 I have shown an ampoule which is indicated generallyat 50. As shown the ampoule 55 includes an elongated cylindrical glass body portion 5I closed at the lower end by a rubber stopper 52 and at the upper end by a rubber stopper 53. e

The lower stopper 52 includes an enlarged flange portion 54 extending over the lower end the collar 44 is released, move the slide bar 43 i'o a normal fully retracted position as shown in Figs. 1 and 3.

Y After the medicament has been discharged into the vehicle the operator places a double ended needle 5I on the tip I3 with the hub portion of the needle engaging the threads I4 on the tip. As the double ended needle 6| is placed on the syringe the inner portion of the needle punctures the lower stopper 52 and passes through the stopper recess 56 into Ythe enlarged recess 55 as shown in Fig. 1.

Y Y To inject the liquid in the ampoule the operator moves the plunger rod 34 towards the ampoule until the head engages the stopper 53. Thereafter upon further movement of the plunger rod towards the tip the upper stopper 53 acts as a of the ampoule body. Opening throughthe top thereof the stopper 52 has a recess 55 therein and opening into. the lrecess 55 the stopper includesa reduced recess 56 the bottom of which is spaced a predetermined distance from the lower face of the stopper.

The upper stopper 53 includes a body portion 51-having an open bottomed recess 58 therein and a trap door-like portion 59 spaced a slight distance below the body and integrally connected thereto at one point by an extended portion of the body. Y v A medicament shown as a tablet 60 but which may be in liquid form or powder form as shown in Fig. l is placed in the stopper recess 58. The space within the ampoulebody 5I between the lower stopper 52 and the upper stopper 53 is filled witha suitable Vehicle for the medicament s uchfas distilledwater. 1

To load the syringe I9 an operator rotates the shank 29 until the lugs 37| thereon enter the elongatedapertures 21 ,in the sleeve 22 and then moves the shank and plunger rod upward to the positionshown in Fig'. 1. Y Thereafter the head member le is swung about the pivots 20 to one side asV shown in Fig. 4. An ampoule 50 is then positioned in the syringe barrel I2 with the lower ampoule -stopper'52 engaging the inner face of the tip I3. i

After the ampoule is positioned in the syringe barrel the head I6 is again swung into alignment with the-barrel I2 and then the shank 29 is moved downward until the lugs 3| move out of the Vslots 21 thereafter the shank is rotated whereupon the engagement of the lugs 3| with the camsurfaces 28 move the head 3U into rm Y engagement with the'upper end of the ampoule body.` l

y'Thereafter the operator holds the plunger rod 34 in Va retracted position and moves the collar 64 towards the syringe barrel. As the collar 44 is thusmoved it'movesthe slide bar 43 and rod 41 against theaction of "the spring 48 towards the tip I3. As the rod 41 is thus moved it -punctures-.the top wall of thestopper 53 and engages the `tablet 5I] which inturn forces theA stopper flange 59. downward and Venters the vehicle withinthe ,ampoule wherein it dissolves..

VWhen a vpowderor liquid medicament is placed in thekrecessxofthe stopperl 53,1the rod' 41 continues ;'downward through the medicament and engagesthestopper fiange 59 andiswings itV downward as shown in' Fig. y2l thereby allowing the medicament andvehicle to mix.

The v'sprin'g is of suflil'ient 'strengththat afterthe rod 41 has puncturedthe stopper 53 and dischargedV 'the me'dicamentr'i'tr'will, whenpiston and forces the liquid in the ampoule out through the needle 6 I To unload the syringe the plunger rod 43 isv withdrawn from the ampoule and through the shank 29 is rotated until /the lugs 3I enter the apertures 21 and then both the shank and the plunger rod are moved to a fully retracted position as shown in Fig. 1. Thereafter the head I6 is swung about the pivots 20 and swung to one side as shown in Fig. 4 after which the ampoule may be removed.

In Figs. 5, 6 and '1 I have indicated a syringe generally' at 65 which is similar in most respects to the syringe I Il and like portions thereof Iare indicated by similarly primed reference numerals. The Vdiierence between the syringes land 65 is that the upper ampoulestopper puncturing rod is eccentric with respect to the axis of the syringe barrel and necessitates replacing the plug member 39 and the rod 41. f

Positioned in the recess 38' of the plunger rod 34 adjacent the lower end I provide an elongated plug member 66 which has an enlarged head 61 longitudinal aperture'68 Vtherein which` is offset at one side of the longitudinal axis thereof which at one end opens through'the head 61 and at the opposite end opens into anenlarged recess 69. Secured to the slide bar 43 and projecting 'beyond the lower end thereofV I provide a Vre-v duced rod 10 which includes an upper portion coaxial with the axis of the bar 43 and an offset lower portion 12 which is positioned in the offsetA Vaperture 68 in the plug member 6B.

. Positioned in the syringe barrel I2 I have indicated an ampoule generally at 13. The ampoule 13 lncludes an elongated hollow cylindrical glass body portion 1-4 closed at the lower end by a rubber stopper 15 and at the upper end by a rubber stopper 16. The lowerstopper 15 vis similar to the stopper 52 and like portions thereof Positioned in the ampoule y'below tl1e.stopper 4lliy I provide a rubber disk member ljwhich may be spaced a'predetermineddistance below thepbottom-of the'stopfperg'l. or it may engageV the inner end of thestpper'll` as shovvnu'in Fig. 5,

A medicamentv in form which in'this stance is shownas a powder;19.is.positioned in the stopper recess-11. 'The syringe v65irsloaded and the ampoule'clamped in place the same 'manner as previously describedinhconneetifn with the syringe I0. The space in the ampoule between the upper and lower Stoppers is filled with a suitable vehicle such as distilled water.

After the ampoule 13 has been positioned in the syringe the collar 44' is moved towards the barrel I2 whereupon the lower portion 12 of the rod 'I0 punctures the stopper 18 and passes through the powdered medicament 19 and engages the disk 18 at one side of the axis thereof and swings it to a tilted position as shown in Fig. 6 thereby allowing the liquid vehicle to contact and dissolve the medicament.

' The ejection of the liquid from the ampoule 13 and the unloading of the syringe 65 are the same as previously described in connection with the syringe HJ.

VIn Fig. 8 I have indicated an ampoule generally at 80 which may be used in the syringe 65. As shown the ampoule 88 includes an elongated hollow cylindrical glass 'body 8| closed at the lower end by a rubber stopper 82 and at the upper end by a rubber stopper 83.

The lower stopper 8'2 is similar in all respects to the previously described stopper 52 and like portions thereof are indicated by similarly double primed reference numerals.

The upper stopper 83 has a recess 84 therein opening through the top thereof and a recess 85 therein spaced from the recess 84 and open-4 ing through the Ibottom thereof.` Positioned in the ampoule body 8| a predetermined distance below the stopper 83 I provide a rubber disk 86.

The space between the stopper 83 and the disk 86 is filled with a liquid medicamentf'l which extends into the stopper recess 85. The space between the lower stopper 82 and the disk 86 is lled with a suitable Vehicle such as distilled water. v y

To mix the medicament and the vehicle and eject the liquid from the ampoule 80 it is placed in the syringe B and the sequence of operations is the same as previously described in connection with the ampoule 13.

From the foregoing description it will be apparent that I have provided a novel hypodermic syringe which is simple in construction and highly efcient in use.

Having thus described my invention I claim:

l. In a syringe, a barrel having a front member and a rear member thereon, means on said rear member adapted to engage an ampoule in the barrel, a plunger slidable through the rear member, said plunger being hollow, a slide bar slidably mounted in the outer end of said plunger, means for moving the slide bar, means normally urging said slide bar outwardly and a rod mounted on said slide bar, said rod having a pointed end normally disposed in the plunger.

2. In a syringe, a barrel having a front member and a rear member thereon, a shank mounted in said rear member and adapted to engage an ampoule in the barrel, said shank having a bore therethrough, a plunger slidable in said bore, said plunger being hollow, a slide bar slidably mounted in the plunger, means slidable along the plunger for moving the slide bar, means normally urging said slide lbar outwardly and a rod mounted on said slide b ar, said rod having a pointed end ampoule piercing end normally disposed within the plunger.

3. In a syringe, a barrel having a front and a rear member thereon, a shank member mounted in said rear member and adapted to engage an ampoule in the barrel, said shank member having a bore therethrough, a plunger slidable ln said bore, said plunger being hollow and having a 'plug member secured in the inner end thereof, a slide bar slidably mounted in the outer end of said plunger, means slidable along said plunger for moving said slide bar, means normally urging said slide outwardly, and a rod mounted on said slide bar, said plug member having a recess receiving said rod, said rod having a pointed innerv end and normally disposed in the plug member and movable when the slide bar moving means is moved.

4. In a syringe, a barrel having a front and a rear member thereon, a shank member mounted in said :rear member and adapted to engage an ampoule in the barrel, said shank member having a bore therethrough, a plunger slidable in said bore, said plunger `being hollow and having a plug member secured in the inner end thereof, a vslide bar slidably mounted in the outer end of said plunger, a collar slidable on said plunger, means connecting said plunger and said slide bar, a spring engaging the inner end of said slide bar and the outer endof said plug member, a rod mounted on said slide bar, said plug member having a recess receiving said rod, said rodv having a pointed inner end and normally disposed in the plug member and movable when the collar is moved.

5. In a syringe, a barrel having a front and a rear member thereon, a shank member mounted in said rear member and adapted to engage an ampoule inthe barrel, said shank member havinga bore therethrough, a plunger slidable in said bore, said plunger being hollow and having a plug member secured in the inner end thereof, a slide bar slidably mounted in the outer end of said plunger, said plunger having opposed slots in the outer end thereof, a collar on said plunger, a pin passing through said slots and through said slide bar and through said collar, a spring engaging the inner end of said slide bar and the outer end of said plug member, a rod mounted on said slide bar, said plug member-having a recess receiving said rod, said rod having a pointed inner end and normally disposed in the plug member and movable when the collar is moved.

6; In an ampoule syringe, a barrel having a front member thereon, a rear member pivotally mounted thereon and movable from a position closing the end of the barrel to a position at one side of the barrel to permit an ampoule to be inserted in the barrel, a sleeve member mounted inv said rear member, a flange on said sleeve member, a finger grip member engaging said flange, a shank slidable in said sleeve member, a head on said shank, lugs on said head, said sleeve member having elongated slots in which said lugs are slidable, the inner end of said slots being open, the inner end of said sleeve member having cam surfaces engageable by said lugs, and an ampoule in said barrel and engageable by the end of said shank head when the lugs engage said cam surfaces.

7. In an ampoule syringe, a barrel having a front member thereon, a rear member mounted on the barrel, a sleeve member in said rear member, a shank slidable in said sleeve member, a head on said shank, an ampoule in said barrel and engageable by the end of said shank head, means to hold said shank head against the ampoule, said shank and said shank head having a bore therethrough, a plunger slidable in said bore, said plunger being hollow and having a plug member secured in the inner end thereof, a slide bar slidably mounted in the outer end of said-plunger, said plunger having opposed slots in the outer end thereof, a collar on said plunger, a pin passing through said slots and through said slide bar and through said collar, a spring engaging the inner end of said slide bar yand the outer end of said plug member, a rod mount,- ed on said slide bar, saidplug member having a recess receiving said rod, said rod having a pointed inner end normally disposed in the plug member, said rod being movable when said collar is moved, a medicinal compartment forming device in said ampoule, said device including a movable partition member, a medicinal preparation in said device, a stopper in the ampoule remote from the device, a vehicle for the preparation Ibetween the stopper and the device, the pointed end of said rod being operable by said collar to move the partition member and permit the" medicinal preparation to mingle with the vehicle'.

8. In a syringe, a barrel having a front mem-V ber thereon, a'rear member mounted on the barrel, a'sleeve member mounted in said rear mem-A Y ber, arshank slidable Vin said sleeve member, a

head on the shank and adapted to engage an ampoule in said barrel, said shank and said shank head having a bore therethrough, a plunger slidable in said bore, said plunger being hollow and having a plug member securedin the inner end thereof, a slide bar slidably mounted in the outer end of said plunger, said plunger having opposed slots in the outer end thereof, a collar on said plunger, a pin passing through said slots and through said slide bar and through said collar, a spring engaging the inner end of said slide bar land the outer end of said plug member, a rod mounted on said Vslide bar, said plug member having a recess receiving said rod, said rod having its entire axis aligned with the axis'of the barrel and having a pointed inner end normally disposed in the plug member, and movable when said collar is moved, and adapted to pierce Yan ampoule closure. l

9. In an ampoule syringe, a barrel having a front member thereon, a rear member pivotally mounted Von the barrel 'and movable from a po-r sition acrossthe barrel to a position at one side of the barrel to permit insertion of an ampoule into the barrel, a sleeve member mounted in said rear member, a flange on said sleeve member, a ngergrip member engaging said ange, a shank slidable in said sleeve member, a head on said shank,:lugs on said head, said sleeve member having elongated vslotsin which said lugs are slidable, the innerend ofV said slots being open, the inner end of saidisleeve member having cam surfaces engageable' 'by said lugs, an ampoule in said barreland engagable by the end of said shank head when the lugs engage said cam surfaces, said shank and said shank head having a bore therethrough, a plunger slidable in said bore, said plunger-.being hollow and having a plug member secured in the inner end thereof, a slide bar slidably mounted in the outer end of saidrplunger, said Aplunger having opposed slots in the outer end thereof, acollar on said plunger,l a pin passing through said slots and through said slide vbar and through said collar, a spring engaging the inner end of said slide bar and the outer end of said plug member, a rod mounted on said slide. bar, said plug member having a hole through which said rodextends, 'said rod including anl outer portionrcoaxial with the plunger axis and a pointed inner end portion at one side of Ithe axis of the barrel and normally dis` posed in the plug member, a stopper in said ampoule adjacent said shank, said stopper having a hole therein, a medicinal preparation in saidV

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