US2000434A

US2000434A - Ampulla syringe

Info

Publication number: US2000434A
Application number: US633136A
Authority: US
Inventors: Baudouin Charles; Pietsch Karl
Original assignee: Individual
Current assignee: Individual
Priority date: 1931-09-17
Filing date: 1932-09-14
Publication date: 1935-05-07
Anticipated expiration: 1952-05-07

Description

May 7, 1935- c. BAUDOUIN -r AL 2,000,434

AMPULLA SYRINGE Filed Sepl.. 14, 1932 I E .Il "IllIlIIIIIIIIIIIIIIIIIIIIIIII Patented May 7, 193s 2,000,434

UNITED STATES PATENT OFFICE AMPULLA SYRINGE charles Baudouin and Karl Pietsch, Hersfeld, Germany Application September 14, 1932, Serial No. 633,136 In Germany September 17, 1931 5 Claims. (Cl. 12S-220) Our invention relates to hypodermic syringes briefly outlined in the appended claims and will and more especially to structural improvements in be more fully understood by the following specihypodermic syringes of the ampulla type, in which cation taken together with the accompanying vthe medicinal liquor to be injected is permadrawing in which 5 nently enclosed and stored'for instantaneous ad- Figs. 1 and 2 are cross sections through a hy- 6 ministration. poderm'ic injecting device designed according to Ampulla-syringes because of being ready for this invention and being shown by way of an instantaneous use and because of taking up relaexample before use and after use, tively little room and being of. relatively light Fig. 3 is a fragmentary view of a structurally l Weight are particularly useful in such cases of modified hypodermic needle, shown in a larger l0 emergency, where a great number of patients scale, must be treated simultaneously or in speedy suc- Figs. 4, 5 are fragmentary cross sections made cession as after railroad accidents, earth quakes, in a larger scale and showing by way of examin times of war, in remote districts far from ples the attachment of the needle to the plunger,

l5 hospitals, where epidemic diseases are rapidly Fig. 5a is a front` elevation partly in section, 15 spreading, and in other places, where ordinary taken along line I-I of Fig. 5 and showing the syringes cannot be timely and properly sterilized inner end of the needle in a larger scale. for want of sterilizing apparatus, sterilizing sub- An ampulla-syringe, structurally improved acstances, trained helpers, accommodation, etc. cording to this invention, consists of a cylindri- However some difficulties and drawbacks cal barrel I0, which is closed at its front end fac- 20 specific of syringes commonly used are also ining the patient by a wall having afprojecting herent to ampulla-syringes of known design, portion Il, and is sealed at its rear end by rewhich are due to the fact, that the plunger of movable sealing means, viz a bulb I2 having a the syringe-on injecting the liquid-must be hollow neck I3, 0f a plunger 20, slidably fitted forcibly pushed forward by means of a handle in in'said barrel in such position as to enclose a 25 the direction of the needle of the syringe, viz column of medicinal liquid in the front end of towards the body of the patient, and that conthe barrel, and 0f a tubular hypodermie needle siderable care and'skill are required in so manipu- 30, substantially longer than said barrel, being lating the syringe and controlling the depth of secured to the plunger 20 for actuating the latthe needle where the injection is to occur, that ter and being slidably fitted in the front wail of 30 an accidental axial displacement of the needle the barrel. and a complete (double) piercing of the vena The total length of the hypodermic needle 30 into which the medicinal liquor is to be injected, is so chosen as to present to the operator a reare avoided. taining member on being pushed into the body The primary object of our invention is to of the patient, while the barrel, presentingacom- 35 overcome the diiiiculties indicated by providing a plementary counter-handle is rearwardly withstructurally improved ampulla syringe which can drawn relatively to the plunger from the patient. be safely handled even by persons who have very The medicinal liqllOr, indicated by dash-lines iS little medical training, and in which the risk of enclosed in the space in front of the plunger wrgngly administering the medicinal liquor by and is free to enter into the hollow needle at 40 completely (doubly) piercing accidentally the its inner end through a hole 3l, 32 shown in Figs. patients vena is greatly reduced. 4, 5, 5a respectively.

The invention further aims at providing an im- The manipulation 0f the ampulla Syringe deproved hypodermic ampulla-syringe of relatively scribed is as follows: The discharge end 33 of simple design which can be manufactured and the needle acting aS a pli-Inger 10d iS inserted 45 supplied in quantities at a comparatively low into the body of the patient and is held in place price so that it does not matter to throw it away therein by the attendant administering the inafter use, and that the total costs involved by jection. the treatment of a great number of patients do There upon by pulling beek With the Other not or not appreciably exceed the costs of using hand the barrel l0' viz away from the body of 50 liquor containing ampulla and syringes of known the patient the medicinal liquor is discharged design and of sterilizing the latter. through the discharge end of the needle at 33.

Other objects of the invention will become in- In order to facilite and render safer the macidentally apparent hereinafter. nipulation of the injecting device I prefer to The nature and scope of the invention are provide the needle 30 with a small handle such 55 as a knob 35 (Figs. l-2) rigidly secured to the front portion of the needle at a suitable distance from the discharge point of the latter.

For securely protecting the needle Il, while at rest, against infective contact and damage the needle should be enclosed in a detachable hood which can be quickly removed. In the embodiment of the invention shown in Figs. 1 and 2 the said hood Il is secured by frictional contact to the bottom portion il of the barrel.

An important point is the safe attachment of the needle 30, i. e. plunger rod, to the plunger 20. In Figs. 5 and 5a the tubular needle is shown to have been split at its extreme end into a number of tabs 32' from which one is broken off so as to form an intake hole at 3|. y

The remaining tabs 32' are bent around and secured in a preferably dove-tail shaped recess 23 of the plunger by means of a plastic compound adapted to rigidify.

Various changes and modifications may be made in the structural details of hypodermic injecting devices of the improved design described above, without departing from the spirit and the salient ideas of this invention.

Fig. 4 shows another convenient way of attaching the tubular needle 30 to the plunger 2li viz by forming a resilient loop 36, forcing the latter into a dove-tail shaped recess of the plunger and ixing it therein with or without the application of a plastic compound.

Instead of providing a knob 35 as a handle at the needle 30, the latter may be formed with a loop 36 as shown in an enlarged scale in Fig. 3.

yA convenient method of making barrels for the purpose described of an easily fusible material, e. g. glass, is indicated in dotted lines in Fig. 1, showing the original form of the barrel, before the latter is closed by fusion under the action of heat.

- It should be noted that injecting devices of the design described can be conveniently used in empty state, i. e. after the discharge of the medicinal liquor, for withdrawing blood, mucus. pus etc. from the body of the patient. In such cases the needle is inserted and held in place by its handle, whereafter the barrel is pushed .aperture in said needle allowing the said liquor to enter the latter, the said needle being adapted as to its length to be grasped by the operator and to serve on injecting the liquid as a gauging and retaining member, while the barrel is rearwardly withdrawn relatively to the plunger and the patient, and retaining means the latter comprising a loop formed in the front section of the needle.

2. In an ampulla-syringe, wherein medicinal liquor is permanently stored, a cylindrical barrel closed at its front end by a wall and at its rear end by removable sealing means a plunger, slidably fitted in said barrel and enclosing medicinal liquor contained in the front endof .the barrel,

and a tubular hypodermic needle, secured to said plunger for actuating the latter and being slidably fitted in the front wall of the barrel, an aperture in said needle allowing the said liquor to enter the latter, the saidneedle being adapted as to its length to be grasped by the operator and to serve on injecting the liquid as a gauging and retaining member, while the barrel is rearwardly withdrawn relatively to the plunger and the patient-the inner end of the needle being split into several bent over tabs leaving free an intake hole and being fixed in a recess of the plunger.

3. In an ampulla-syringe, wherein medicinal liquor is permanently stored, a cylindrical barrel closed at its front end by a wall and at its rear end by removable sealing means a plunger, slidably fitted in said barrel and enclosing medicinal liquor contained in the front end of the barrel, and a tubular hypodermic needle. secured to said plunger for actuating the latter and being slidably fitted in the front wall of the barrel, an aperture in said needle allowing the said liquor to enter the latter. the said needle being adapted as to its length to be grasped by the operator and to' serve on injecting the liquid as a gauging and retaining member, while the barrel is rearwardly withdrawn relatively to the plunger and the patient,the inner end of the needle being formed with a loop, which is fixed in a recess of the plunger.

4. In an ampulla-syringe, wherein medicinal liquor is permanently stored, a cylindrical barrel closed at its front end by a wall member and its rear end by a frangible tip portion adapted to be' broken before use, a plunger, slidably fitted in said barrel and adapted to enclose medicinal liquor between the front end of the barrel and the front end of the plunger, a tubular hypodermic needle substantially longer than said barrel, secured to said plunger and forming an operating means therefor, said needle being slidably i'itted inanopeninginthefrontwallofthebarrel, and an aperture in said needle communicating with the space in the front end of the barrel and allowing said liquor to enter the needle, the saidneedle being adapted as to its length to be grasped by the operator and to serve'on injectlng the liquid as a retaining member, said barrel being adapted to be rearwardly withdrawn relativelyto the plunger and the patient.

5. In an ampulla-syringe, wherein medicinal liquor is permanently stored, a cylindrical barrel closed at its front end by a walll and at its rear end by removable sealing means, a plunger slidably iltted in said barrel and enclosing medicinal liquor contained in the front end of the barrel, a tubular hypodermic needle secured to said plunger for actuating the latter and being slidably fitted in the front wall of the barrel, an aperture in said needle allowing the said liquor to enter the latter, the said needle being adapted as to its length to be grasped by the operator and to serve on injecting the liquid as a retaining member, while the barrel is rearwardly withdrawn relatively to the plunger and the patient, and holding means mounted on said needle exteriorly of said barrel, adapted to be grasped by the operapatients body during use.

man Prs'rscn.