US1757809A

US1757809A - Hypodermic syringe

Info

Publication number: US1757809A
Application number: US330653A
Authority: US
Inventors: Felix C Montuori
Original assignee: Individual
Current assignee: Individual
Priority date: 1929-01-05
Filing date: 1929-01-05
Publication date: 1930-05-06
Anticipated expiration: 1947-05-06

Description

May 6, 1930. F. c:` MONTUORI HYPODERMIC SYR INGE Filed Jan. l5, 1929 :infill/1 Patented May 6, 1930 i I ,i v I UNITED STATES PATENT OFFICEA FELIX G. MONTUORI, E WASHINGTON, DISTRICT OIF COLUMBIA.

meneame sYnrNen Application led January 5, 1929. Serial No. 330,653.

The invention relates to hypodermic sythe rear extension 4 of the needle, and a ringes, and my improvements are mainly dipistonV 5 adapted to expel the medicinalconrected to simplifying the construction of the tents of the cartridge through the needle device with a saving in cost of manufacture, and into the wound or puncture made by the 5 increasing the conveniencel of manipulation needle. These parts are or may be of known 50 of the syringe in inserting and removing mecharacter and mode of operatlon. `The needicinal cartridges and the like, securely and dle is held in place by a removable nut or accurately holding the cartridge open to incap 6. 7 is a slide bearingat the rear end spection at all times while it 1s in place in of the barrel in which fits and operates the 10 the syringe. rod 8 of the piston 5. '9 is a handle fixed on 55 With such objects .in view the invention the outer end of the piston rod. The inner consists in the useful features, parts and end of the barrel 1 is preferably formed with combinations thereof hereinafter set forth a retaining seat l() into which the innei` end and pointed out in the Claims, of the cartridge, carpule or ampule 3 may In order to make the invention more olearbe placed when it is entered into the barrel e0 ly understood there are shown in the accomfor use through an opening 11 in the side of panying drawings means for carrying the the barrel.

Same into practical eect, without limiting When the cartridge is pressed into place the improvements, in their useful applica- 1t presses outwardly a side spring 12 and as tions, to the particular constructions which, the Cartridge bGCOlIlGS Central in the barrel 65 for the purpose of explanation, have been the Spring 12 Carries Outward a pin 13 fixed made the subject of illustration. In the said O11 the Outer end of the spring and thereby drawings: e releases a movable retainer 14 for the outer Fig. 1 is a longitudinal section of a hypo- Gnd. 0f the cartridge, being so moved by a dermic syringe embodying my improve- Sprlng 15. 7e

' ments. on line L-I of Fig. 3, showing the When 1t is desired tol remove the cartridge cartridge in place in the syringe and the the handle 9, rod 8 and piston 5 are drawn piston slightly entered into the cartridge, a. little outward, whereupon the pistonmoves Fig. 2 is a similar section, showing the the retainer 14 away from the cartridge,

cartridge in the position which it primarily compressing the spring 15, and the side 75 takes either in being inserted into the syrspring 12 immediately ejects the cartridge inge or in being ejected therefrom. through the `opening 11.

Fig. 3 is a bottom view of the barrel por- It will be understood that the cartridge is tion of the syringe. securely held in its central operative posi- Fig. 4 is a cross-section on line IV-IV of tion, in line between the needle and piston, 80 Fig. l. and while the piston makes its inward move- Fig. 5 is a cross-section on line V-V of ment against or into the outer end of the Fig. 1. cartridge, and during this time holds and Referring to the drawings1 is the main stresses the side spring 12 outwardly, and 40 body, central part or barrel of the syringe, when the piston is withdrawn and the lre- 85l which is or may be a frame or hollow cylintainer 14 pulled outward to free the carder of suitable character to receive a tubular fridge, the spring 12 is also released and needle 2 at its front end. a cartridge 3 in its ejects the cartridge as aforesaid. intermediate part, the front end of which Opposite to the opening 11 the barrel may cartridge is ordinarily to be punctured by be formed with an opening 16, so that the 90 contents of the carpule may be viewed by the aid of light passing through the syringe from the opposite side of the same to the eye.

What I claim is:

1. A hypodermic syringe having a barrel and means for holding a needle, said barrel having a loading opening in its side and constructed to receive a cartridge, movable means for holding an end of the cartridge, and means automatically to eject the cartridge upon movement of said movable means.-

2. 'A hypodermic syringe having a barrel and means for holding a needle, said barrel having a loading opening in its side and constructed to receive a cartridge. a cartridge retaining spring operating at the end of the cartridge, and a cartridge ejecting spring operating automatically at the side of the cartridge, upon action of said retaining Spring.

3. A hypodermic syringe having a barrel and means for holding a needle, and a piston, said barrel having a loading opening in its side and constructed to receive a cartridge, and means released by the cartridge to hold the cartridge in position between the needle and the piston.

4. A hypodermic syringe having a barrel and means for holding a needle, and a piston, said barrel having a loading opening in its side and constructed to receive a cartridge, means released by the cartridge to hold the cartridge in position between the needle and the piston, and means to retain said cartridge holding means in inoperative position until released.

5. A hypodermic syringe having a barrel and means for holding a needle, said barrel having a loading opening in its side and constructed to receive a cartridge, a cartridge retaining spring opearting at the end of thel cartridge, and a control spring therefor operating at the side of the cartridge, to retain said lirst spring against operation.

6. A hypodermic syringe having a barrel and means for holding a needle, and a piston, said barrel having a loading opening in its side and constructed to receive a cartridge, a movable cartridge retainer and spring operating at the end of the cartridge, the piston having a connection with the retainer, and a cartridge ejecting spring operating automatically at the side of the cartridge, and means operable by the latter spring to eject the cartridge upon movement of said retainer.

7. A hypodermic syringe having in combnation a barrel, means for holding a hollow needle at one end of the barrel, a piston mounted at the other end of the barrel for operating at the end of a cartridge, said barrel having a sid e openingto receive acartridge, means for holding the cartridge in place between the needle and the piston, and means to automatically eject the cartridge upon movement of the piston to its limit of travel in one direction.

8. In a side-loading syringe having a cartridge, means for retaining said cartridge in place, means for ejecting said cartridge from said syringe, and means for setting said cartridge-retaining means into releasing position to be freed by the insertion of the cartridge.

9. In a syringe having a cartridge, movable means for retaining said cartridge in place and means for ejecting said cartridge when said retaining means is released, and means for setting said cartridge-retaining means into releasing position to be set free by the insertion of the cartridge to retain the latter.

10. In a side-loading syringe, movable means for retaining said load in place and means for holding said retaining means in inoperative position, said holding means being constructed to release said retaining means upon loading of the syringe.

1l. In a side-loading syringe having a cartridge, means for retaining said cartridge in place, means for releasing said cartridge from said syringe, and meansfor setting said cartridge-retaining means into locked inoperative position to be released by insertion of the cartridge.

12. In a syringe having a piston, means to position a cartridge for engagement by the piston, and means to eject the cartridge, said ej ecting means being self-operative when the piston is pulled back to reload.

13. In a side-loading syringe having a piston, means to position and lock a cartridge for engagement by the piston, movable means actuated by the loading cartridge to release said first means, whereby the cartridge will be locked in position.

14. In a side-loading hypodermic syringe, the combination of a barrel having a side opening, means for holding a needle, and a piston at the respective ends of said barrel, a sliding retainer for the outer end of the cartridge mounted on the piston rod and engageable by the piston to disengage the retainer from the cartridge, a spring urging the retainer to engage the cartridge, a cartridge-ejecting spring and means operated by the latter to hold the retainer disengaged and to release the same.

15. In a side-loading hypociermic syringe, the combiantion of a barrel having a side opening, means for holding a needle and a piston at the respective ends of said barrel, a movable retainer for the outer end of the cartridge engageable by the piston to disengage the retainer from the cartridge, a spring urging the retainer to engage the cartridge, a cartridge-ejecting device and means operated by the latter to hold the retainer disengaged and to release the same.

16. A hypodermic syringe having a barrel and means for holding the needle, Sai barrel having a loading opening in its side and constructed to receive a cartridge, e cartridge retaining spring operating at the enti of the cartridge, and a control spring operating at the side of the cartridge to eject said cartridge upon releasing movement of the' r retaining spring and effective to hold saidA retaining sp1-ing in an inoperative position.

In testimony whereof I affix my signature.

FELIX C. MONTUOR,