US 2219301 A
Abstract available in
Claims available in
Description (OCR text may contain errors)
W. ERHARD Oct. 29,- 1940.
HYPonsRuic UNIT Filed April 15. 1939 34:11:23!!! I WA ll/ Z w I Fae. 3 v
INVENTOR l ATTORNEY Patented Oct. 29, 1940 monnnmc UNIT William Erhard, North Bergen, N. 1., assignor to E. R- Squibb & Sons, New York, N. Y., a corporation of New York Application April 15, 1939, Serial No. 267,968
' 6 Claims. (Cl. 128-216) This invention relates to hypodermic unitsi. e., units enabling medicines and other substances to be promptly and emciently administered by injection directly from sterile original packages-, and has for its object the provision of such units characterized by exceptional simplicity of structure, inexpensiveness of manufacture, and ease, convenience, and dependability in use.
The hypodermic unit of this invention comprises essentially (1) a hermetically sealed collapsible oft-metal tube having a readily-pierceable blind (i. e., integrally-closed) discharge end;
- (2) a hypodermic needle having a base rigidly secured to the tube, the lumen of the needle communicating with the outside of the blind end; (3) a stiff wire, preferably headed at its outer end and pointed at its inner end, in the lumen of the needle; preferably, (4) a guard disc impaled on the wire near the head; and preferably (5) a detachable protective cover enclosin the needle and the wire.
The invention will be described in detail in connection with the accompanying drawing wherein:
Fig. 1 is an axial section of a hypodermic unit embodying my invention;
F18. 2 is a fragmentary axial section of a similar unit in which there is provided a different means for connecting the collapsible tube and the hypodermic needle; and
Fig. 3 is a somewhat enlarged fragmentary axial section of the unit shown in Fig. 2, with the connection completed. j
Referring first to Fig. 1, the unit shown comprises a collapsible soft-metal tube I having a conventionally-shaped shoulder 2, an unthreaded neck 3, and a blind end 4, the tube having been formed by extrusion, in the customary manner.
The shoulder and neck of the tube are prefer-' ably thicker than the body of the tube, for rigidity; and the blind end 4 is relatively thin, at least at its center, so as to be readily pierceable by a stiff wire. A hypodermicneedle 5 is secured-as by welding, soldering, or otherwise (for exampleby being made integral) to a base, preferably of the type of hub 6, and the hub, which hasan inner diameter slightly less than the external diameter of the tube neck, is forced upon the tube neck and thus frictionally engaged therewith to form a rigid attachment. Alternatively, the hub may be of greater diameter than the neck and cemented or otherwise attached thereto; and the base may assume any of 56 various other shapes. Within the lumen of the needle is a stiff, pointed wire 1 having its outer end modified to form a head or handle 8, the wire being longer than the lumen of the needle and being thus adapted to puncture the blind end of the tube when thrust inwardly. Preferably 5 the wire has impaled thereon a guard disc 9 of thick paper or other protective material which will not dull the point of the hypodermic needle. A protective cover III of synthetic plastic or the like, preferably transparent, such as Celluloid or 10 Hycoloid, is frictionally engaged with the hub of the needle, the engagement being tight enough to exclude contaminants but permitting the cover to be readily pulled off for use of the hypodermic unit. I 15 The hypodermic unit is assembled as follows: The open tube is placed on a mandrel providing internal support for the tube neck, the needle hub is positioned over the neck and forced into frictional engagement therewith, the wire is in 20 serted into the needle, and the protective cover attached.
The collapsible tube is then filled with the desired medicine or other substance,.inter alia, narcotics, tetanus antitoxin, and insulin-in the 25 usual manner through its open end, and that is suitably closed, preferably hermetically sealed. as by electrically forming a bead-weld l l; and finally the completed unit is heat-sterilized in the usual manner. Alternatively, the needle, wire,
and protective 'cover may becassembled first, the
needle hub being provided with aflange at the edge of its skirt, and the assembly forced upon the neck of the tube by pressing the hub flange and mandrel together.
In using the unit of this invention, the protective coverv is first removed'and the wire, as by pressure on its head, thrust inwardly to puncture the blind end of the tube, the guard disc preventing injury to the needle point as well as contam- 40 inati'on thereof by the fingers, and serving also to assist withdrawal of the wire. The wire is then withdrawn, the needle introduced into the subject, and the tube squeezed between the fingers to inject the contentsthereof into the subject. Al- 45 ternatively, the puncturing movement of the wire may be effected by merely pushing the cover toward the tube; and moreover the wire may be fixed to the distal end or the cover so as to be removable therewith, in a single operation. 50
In Fig. 2 there is shown an alternative means of efiecting a rigid inseparable connection between the hypodermic needle and the collapsible tube. An integral, readily-pierceable partition 20 is situated within the bore of the neck 2| so as to I6 cover, wire. handle, and shapes, proportions, and
arrangements of the several elements-within the scope of the appended claims.
1. A hypodermic unit comprising a collapsible soft-metal tube having an integrally extruded,v readily-pierceable blind end, and a hypodermic needle having a base immovably secured to the tube. the lumen of the needle communicating with the outside of the blind end.
2. A hypodermic unit comprising a collapsible soft-metal tube having an integrally extruded, readily-pierceable blind end, a hypodermic needle havin abase immovably secured to the tube, the lumen of the needlecommunicating with the outside of the blind end, and a still wire longer than and carried in the lumen of the needle.
3. A hypodermic unit comprising a collapsible soft-metal tube having an integrally extruded,
"readily-pierceable blind'end, a hypodermic needle having a base immovably secured to the tube, the
lumen oi. the needlecommunicating with the outside of said blind end, a stiff wire longer than and carried in the lumen of the needle, and a detachable protective cover enclosing the needle and the wire.
4. A hypodermic unit comprising a collapsible soft-metal tube having an integrally extruded, readily-pierceable blind end, a hypodermic needle having a base immovably secured to the tube, the lumen 01 the needle communicating with the outside of the blind end, a still wire longer than and carried in .the lumen of the needle, and a guard disc impaled on the wire beyond the outer end of the needle.
5. A hypodermic unit comprising a collapsible soft-metal tube having a neck provided with an integrally extruded, readily-pierceable blind end, and a hypodermic needle having a hub frictionally andimmovably engaging the outside oi, the neck, ,the lumen oi! the needle communicating with the outside of the blind end.
6. A hypodermic unitvcomprising acollapsible soft-metal. tube having a neck provided with an integrally extruded, readily-pierceable partition in its bore; and a hypodermic needle having a base immovablysecured in' the bore above the partition, the lumen of the needle communicating with the outside of the partition. 1