US1709691A - Hypodermic syringe - Google Patents

Description

April 16, 1929 F. w. STEUER '1,709,691

HYPODERMIC SYRINGE original Filed. sept.Y 22, 1924 [zzz/EH10?" ifea ZZ Stfa er headv 15 serves as a stop to prevent with-I drawal from the barrel. Upon the screw atiented FRED Wi STEUER, OF BOSTON, MASSACHUSETTS, ASSIGNOB TO (100K IABORATOEES;

INC., A. CORPORATION F DELAWARE.

nrronnnarxc SYRINGE.

y Application led September 22, 1924, Serial No. 739,010. Renewed anuary 5, 19278.'

Thiswinvention ,relates to hypodermic4 i syringes, and among other objects aims to provide a conveniently loadedsyringe of the cartridge holding type.

5 The invention may be understood by reference to one illustrative embodiment shown in the accompargying drawings", in which.:

' Fig. "1 is an elevation of the syringe shown the same on an enlarged scale; and

' F ig. 3 is' an enlarged sectional view of'.

-the syringe shown open ffor loading.

It is to be understood that the illustrative -orm shown in the drawings is simply a preerre'd embodiment ofI the invention; and v'that in the following explanation of that specific form, the described details of structure and organization-are merelyl exemplary.

'Referringto the drawings, the syringe comprises a barrel 5, serving as a holderv'for f the cartridge 6, a'plunger 7 for dispensing the medicament from the cartridge, and 'a needle 8 secured to'the barrel, and arranged y.

cartrldge 1s secured 'against longitudinal to conduct "the vmedican'ient from the cartridge to the point ofinjeetion. To'facilitate insertion ofthe cartridge,

the barrel 5 comprises two hinged sections 5, 5l? joined together at one end, herein the Q30, needle-carryingend, by hinge 9. Conveniently the barrel -sections are semi-cylindrical, so that they 'may together enclose the cartridge, asA shown inFig. 2. The barrel section 5b carries a head 10 at one end providin an abutment for the pierceable end l11 o, the cartridge, and having a screwthreaded boss 12 providing a seat for the needle enlargement 13, which is clamped in its seat by nipple 14.

The plungerv 7 slides through a head 15 secured upon barrel section 5"y and has the yusual handle 16 for cooperation with finger grips 17` on head 15 when dispensing the medicament. vIt is vdesirable that the two 45. barrel sections be locked together 1n car-l tridgeholding position, and `for this purpose headl 15 is movable relative to the vbar- Vrel end by meansl of screw threads 18 enrel section 5*. -An end flange`20 on screw headi is secured an annular locking flange or cap 21 whose dimensions are such that when l,the screw head is advanced within the bar- Fig. 2 is a longitudinal sectional view of .is retracted 'far enough to gaged withinl acollar or nut 19 fast to bar-v -head 'is easily advanced or retracted', to lock -f or unlock the barrel, by means of the knurled portion 22.

In using the syringe, the

barrel is opened as shown 1n Fig. 3 andthe cartridge is laid in theiopen receptacle'provided'by either of the semi-cylindrical barrel sections. Then the barrel. is closed and-thescrew head is turned to lock the barrel sections. As the screw head advances within the' barrel, it engages the endI of the cartridge to thrust it Irmly against the abutment `head 10.(Fig. 2); and if the needle has been initially-sd' cured in position, the screw head completes piercing of the end plug 11. After the contents of the cartridge have been discharged through the needle by the plunger, the car-- .tridge may be removed when the screw head l y permit separation` of the barrel sections.

movement has been found to be of specil yalue when the syrmge is used for injectie s 1n tissue whichoers considerable resistance,

The feature of the invention byl which I e. g'., bony tissue. If ver great pressure is exerted onth'e syringe p unger,l and if the ycartridge has a slight longitudinal. play within the syringe, Vthe plug which is pierced by the needle may permit'loss of the medicament because of back movement lof the glass cylinder of the cartridge 'responsive to the extremely high pressure onthe pierced. plug, which cannotlmove because of the cylinder vhead 10. But if the glass cart-ridge is clamped, as shown in Fig. 2, and if the glass walls are of proper. strengthfno amount ofi pessurewhich the practitioner can exert onthe plunger -will cause loss of 'the medicas ment. L

Of course, it will. be understood that Athe term hypodermic is used descriptively and 'useful not only for strictly hypodermic injections, but also for intraosseous,.intrav-` enous, intramuscular and other injections. 4

Obviously the present invention is not ref not as a limitation. The syringe shown -is los stricted to the particular embodiment there.-

'of herein 'shown'and described.' y Moreover,

it is not indispensable that all thefeatures of the invention be used conjointlysince they 11o s may be employed advantageously in various combinations and subcombinations as de iined in the claims.

What-I claim is: 1. A hypodermic syringe comprising, in combination, a sectional barrel constructed and arranged for lateral insertion of a.v

medicament-cartridge; means for holding a needle on the barrel; and means carried by one of said sections for'locking the barrel sections together, said means thrusting the cartridge in the direction of the needle and securing it substantially immovably within the barrel.V

2.A hypodermic syringe comprising, in

combination, a sectional, hinged barrel constructed and arranged to open laterally `for lateral insertion of afmedicament cartridge; 'a screw-threaded member on one barrel section constructed and arranged to lock the two posisections together incartrid e-enclosing) y the tion; and a plunger slidab y carried screw-threaded member for reducing the interior volume of the cartridge to expel its contents.

1' 3. A hypodermic syringe comprising,iin'

combination, a' barrel composed ofvtwo mating longitudinal sections which when brought 'together form a cartridge-enclosing chamber;

together form a'cartridgel-enclosing chamber Y". a hinge connecting the sections at lone end o the barrel; a screw-threaded barrel-section locking member at the opposite end of the barrel; needle carrying means at the hinge end of the syringe; and a plunger slidable through the locking member.

` 5.`A hypodermie syringe com rising, in

combination, a barrel composed o two maty ing longitudinal sections which Awhen brought together form a cartridge-:enclosing chamber; one of said sections having an abutment head at one end against which the cartridge may bethrust; means on said head for supporting the hypodermic needle; a hinge connecting the headV with the other barrel secs tion; and a plunger slidably carried by the barrel section last named.

.6. A hypodermic syringe comprising, in combination, a barrel com o'sed oftwo mating longitudinal sections w ich when brought together form a cartridge-enelosin cham' ber .one of said sections having an a u tment vhead at one end against -whichthe cartridge maybe th'ust; means on said' headfor supporting' the hypodermic needle; a hingeconnecting the head with` the other barrel section; and a screw head carried bythe barrel section last named and constructed and arranged to `lock the two barrel sections togetherand to enter the cartridge chamber to thrust the cartridge towards the needle.

7 A hypodermicsyringe com rising, in combination, a barrel composed olfJ two mating longitudinal sections hinged together at one end and providing a cartridge-enclosin ,chamber when brought together; and a loc jat the end opposite to the hinge constructed and arranged to preventy separation of the barrel sections; said 4lock comprising a nut 75 or screw-threaded collar @ast to one rof the barrel sections at one end, an exteriorly threaded sleeve or head engaged within said collar, and `means secured to the head and designedto riitover the ends of the barrel sections. f, Y

'8. A hypodermic syringe comprising, in combination, a barrel composed of complementary longitudinal sections which are hinged to 'each other so that when they are S5 brought together they will forma longitudi-v nally divided cartridge-enclosing chamber; a'

'medicament cartridge; and a lock for the barrel sections which is constructed and arranged-to be moved over the corresponding 9.0 ends of the barrel sections andy simultaneousl to ententhe end of the chamber aforesai thereby engaging the end of the cartridge and y thrusting it against the opposite end o-Kthe chamber to secure the cartridge against longitudinal movement.

,9.111 a cartridge syringe, a jointed car- V tridge-holding and operating instrument havlng a lcartridge-operating plungerv and constructed Yto be opened laterally rfor lateral 10 0 insertion of the cartridge andembodying in its breech end an axially-movable member in which the plunger is mounted adapted to lock, the `instrument in closed operative condition.

10. In a cartridgesyringe, a jointed cartridge-holding and" operating instrument having in its breech endA a cartridge-operat-- ing plunger and constructed at its fore end to provide -a cartridge abutment and to ac` commodate a cartridge-piercing canula, said 110 instrument adapted'to be opened laterally for lateral'insertion of the cartridge and embodying in its breech end means to thrust the cartridge against said abutment and to lock the instrument in closed operative condition.

`11. In.avcartridge syringe,a jointed cartridge-holding and o erati-ng instrument havin in its breechen a cartridge-operating p unger and constructed at its fore end to provide a cartridge-abutment and to ac` 12 commodate azcartridge-piercing canula, saidv instrument adapted to be opened laterally for lateral insertion of tlie cartridge and embodylng iii its breech end an axially-movable .lockingmember or'locking the instrument 1 25 closed operative condition. i 12. In a cartridge syringe, a, jointed carltrid'ge-holdingv and operating instrument having in its breech end a `cartridge'-operat ing plunger and `constructed at its forejend 13 to provide a cartridge abutment and to4 acplunger is mounted to bear on the butt end of the cartridge and force it forward' against said abutment.

14. In a cartridgesyringe, a jointed cartridge-holding and operating Ainstrument having in its breech end a cartridge-operating plunger and constructed at its fore end to provide a cartridgev abutment and to accom modate a cartrid e-piercing canula, said instrument adapte to be opened laterally for lateral insertion of the cartridge and embodyin a plunger-carrying breech-head having loc ing means .to lock the instrument in closed operative condition.

15. In a cartridge syringe, a jointed carj tridge-holding and operatmg linstrument having in its breech end a cartridge-operating plunger and constructed at its fore end to provide a cartridge abutment and to accommodate a cartridge-piercin canula, said instrument adapted to be opene laterally for lateral insertion of the cartrid e and embodyinga plunger-carrying breec '-head having locking means to' lock the instrument inclosed operatlve conditi n and means to bear on the butt end of the c ridge and force it forward against'said abutment.

16. Ina cartridge syringe, a jointed cartridge-holding and operating instrument havin in its breech end a cartridge-operating p unger and constructed at its fore end to provide acartridge Vabutment and to accommodate a cartridge-piercin canula,-said instrument adapted to be opene laterally for lateral insertion of the cartridge and embodying in its breech portion screw-actuated means to force the cartridge forward against said abutment and to lock'the instrument in closed operative condition.

17. In a cartridge syringe, la cartridgeholding and operating mstrument having in its breech end a cartrid e-operating plunger and-having its fore `en g constructed to provide a cartridge abutment and to accpmmo date a cartridge-piercing canula, 'said 1nstru ment embodying hinged complemental cartridge-enclosin sections, the line of se arationbetween w ich sections extend longitudinally ofi the instrument, whereby the instrument canbe opened to permit' lateral insertion of the cartridge, and having a longitudinally movable locking sleeve adapted' to cooperate with said sectionsto lock the instrument; in closed operative condition.

18. In a `cartridge syringe, .a cartridgeholding and operating instrument having in its breech end' a cartridge-operating plunger and having its fore en d' constructed-cto provide a cartridge abutmentand to accommo-V date a cartridge-piercing canula, said instrument embodying hlnged complemental cartridge-enclosing sections, the line of separation between which sections. extends longitudinally 'of the instrument, whereby the in- `strument can be opened to permit lateral insertion of the cartridge,and having axially adjust-able means to. force the cartridge against said abutment and to lock the instrument in closed 'operative condition..-

19. In a cartridge syringe, a cartridgeholding and 4operating instrument having in its-breech end a cartridge-operating plunger and having its fore end constructed to provide a cartridge abutment and to vaccommodate a cartridge-piercing canula, said instrument embodying complemental longitudinal f cartridge-enclosingl sections hinged at one end of the instrument and having locking means at the opposite end of the instrument.

20. In a cartrid ev syringe, a cartridgeholding and .operatm'g instrument having in its breech end a cartrldge-operating plunger and having a hinged fore 'head provlding a cartridge abutment and centrally apertured 'to accommodate av cartridge-piercing canula,

said instrument comprising compl'emental longitudinal cartrid e-.enclo'sing sections, one carried by said head other section, said hin ed fore head and section carried thereby a apted to be 'swung out of position to permit lateral insertion of the cartridge, the instrument embodying locking means to hold the parts inoperative relation after the cartridge is inserted.

21. A hypodermic syringe comprising, in

which is hinged to the combination, a sectional hln ed barrel; and

means for locking the hinge barrel sections together consisting of a hollow sleeve fitting J over both sections to lock the barrel' when closed, and means connected with the sleeve and screw-threaded on one of the barrel sections to move said sleeve longitudinally.

22. A yhypodermic syringe comprising, in

combination, a sectional, hin ed barrel; and

means for locking the hinge barrel sections l together consisting of a hollow sleevey and an actuating memberi engaged by screw. threads with one of thehinged sections of the barrel, said sleeve lock actuating member, when -turned'gso as to lock the barrel, enga ing a cartridge of medicament placed within the barrel y and thrusting the cartridge toward the opbsitend of the instrument.

23:. :,hypodermic syringe comprising, in

g barrel head controlled by said screW-threadv combination, a sectional barrel; one of the barrel sections having a rotatable barrel head; a screw threaded member secured to the rotatable barrel head and to the end of said section, saidl screw-threaded Amember being hollow axially to provide a slideway for the syringe plunger; and'means onthe ed member andconstructed and arranged'to engage tHe sections of the barrelto prevent separation thereof in use.,

24.*A hypodermic syringe comprising, in

combination, a sectional barrel constructed and arranged to holda cartridge of medicamentg Ao ne ofy the barrel sections having at one end an internally-4screw-threaded ring;

a member screw-threaded within' said ring and having an axial passage for the syringe ingv a medicament cartridge; one of the barlrel sections having at one end an vinternaly screw-threaded ring; a member screw threa ed Within said ring and having an -axial passage for the'syringe plunger; a locking sleeve carried by the screw-threaded member to be moved over the ends of the barrel sections to hold them together; the screw-threaded meinber being constructed and arranged to engage one end of the cartridge when turned toward barrel-locking position; and an abutment at the other end ofthe same barrel sectionagainst which the cartridge is thrustl by said screw.

26. An instrument of the class described comprising, in combination, a cartridgeholder longitudinall complemental hinge sections, one of said sections having a breech head and plunger and associated means embodying an axially adjustable screw for locking the sections/in closed or 'cartridge-holding position.

In testimony whereof, I have signed my .name to this specification.

y Y FRED W. STEUER.

divided comprising

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