US2799271A - Hypodermic syringe - Google Patents
Hypodermic syringe Download PDFInfo
- Publication number
- US2799271A US2799271A US544913A US54491355A US2799271A US 2799271 A US2799271 A US 2799271A US 544913 A US544913 A US 544913A US 54491355 A US54491355 A US 54491355A US 2799271 A US2799271 A US 2799271A
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- US
- United States
- Prior art keywords
- barrel
- perforation
- perforated
- glass
- hypodermic syringe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
Definitions
- a further object is to provide a simple, economical, clean and efficient seal for such purpose.
- Another object is to provide a seal that may be readily incorporated in a hypodermic syringe and one that will be retained in place even under various conditions of use and of sterilization of the syringe.
- Hypodermic syringes in general use consist of a glass barrel, a glass plunger, and a perforated cap permanently fixed to the end of the barrel and to which a hollow needle is attached.
- the plunger is closely fit within the barrel and its operation permits the barrel to be filled via the needle, or its contents expelled through the needle.
- connection between the perforation in the end wall of the barrel and the perforation in the metal cap has been dependent upon precision finishing of the barrel end and the abutting metal for its tightness. It is a perfect seal by this means. As a result, liquids escape at this connection and collect between the barrel end and its encasing metal cap. In this location it is impossible to properly clean and sterilize the syringe.
- My invention provides a perfect seal and one that is not dislodged or deteriorated under repeated use and sterilization of the syringe and one which prevents contamination of the syringe contents.
- Figure 1 is a front elevational view of a syringe barrel with perforated metal cap secured thereto.
- Figure 2 is an enlarged cross sectional view of the perforated metal cap showing its sealed connection with the syringe barrel.
- Figure 3 is a plan View of the continuous yieldable ring used to form the seal between the syringe barrel and the perforated metal cap.
- Figure 4 is an elevational view of the continuous yieldable ring of Figure 3.
- Figure 5 is a fragmentary cross sectional view of the perforated, metal cap showing the continuous yieldable ring in position before crimping.
- Figure 1 shows hypodermic syringe S, consisting of barrel B with the finger piece of plunger P protruding from its flanged end. At the other end or tip of barrel B is metal tip 1. Metal tip 1 outwardly exhibits perforated metal cap 2, lock 4 and needle receptacle 3.
- FIG. 2 shows in detail the assembly of metal tip 1, to glass tip 9 of barrel B.
- Glass tip 9 is frictionally seated within recess 2' of perforated metal cap 2.
- Perforation 10 extending through the end wall of glass tip 9 gives access to the interior of barrel B.
- Perforation 6 extends the length of metal tip 1 through perforated metal cap 2 and needle receptacle 3.
- needle lock 4 Surrounding needle receptacle 3 and an integral part of metal tip 1 is needle lock 4 into which a needle assembly (not shown) may be removably secured.
- Circumferential groove 5 in perforated metal cap 2 surrounds the opening of perforation 6 and into this groove continuous yieldable ring 7 is seated, the lower portion 7 being gripped by crimping with the turned out wall 8 at the perforation opening.
- the perforated wall of glass tip 9 bears upon the upper edge of continuous yieldable ring 7.
- Continuous yieldable ring 7 is made of a yieldable heat resistant material such as neoprene, nylon, teflon or the like. Many materials now well-known and widely used are Suited for the purpose of effecting a sealing engagement.
- Figures 3, 4 and 5 show the continuous yieldable ring to be collar-like in shape before being crimped in place.
- Figure 5 shows continuous yieldable ring 7 seated in groove 5 prior to crimping. After crimping continuous yieldable ring 7 metal tip 1 is forced onto glass tip 9 to the position shown in Figure 2.
- a hypodermic syringe comprising a glass barrel open at one end and terminating at the other end in a perforated wall; a mating glass plunger slidable in the barrel; a perforated cap encasing the walled end of the barrel with its perforation concentrically aligned with the perforation in the wall and having a groove in its inner surface surrounding the perforation; and a continuous yieldable ring seated in such groove and extending beyond the top thereof in sealing engagement with the end of the barrel.
- a hypodermic syringe comprising a glass barrel open at one end and terminating at the other end in a perforated wall; a mating glass plunger slidable in the barrel; a perforated cap encasing the walled end of the barrel with its perforation concentrically aligned with the perforation in the Wall and having a groove in its inner surface surrounding the perforation; a continuous yieldable ring seated in such groove and extending beyond the top thereof in sealing engagement with the end of the barrel; and means for securing the ring in the groove.
- a hypodermic syringe comprising a glass barrel open at one end and terminating at the other end in a perforated wall; a mating glass plunger slidable in the barrel; a perforated cap encasing the walled end of the barrel with its perforation concentrically aligned with the perforation in the wall and having a groove in its inner surface adjacent to and surrounding the perforation; a continuous yieldable ring seated in such groove and extending beyond the top thereof in sealing engagement with the end of the barrel; and a partition wall between the groove and the perforation in the cap bent outward from the perforation against the ring.
Description
July 16, 1957 J.S1URBA I 2,799,271
Y HYPODERMIC SYRINGE 2 Sheets-Sheet 1 Filed Nov; 4, 1955 2 I, 27056 171 {Zzikrx July 16, 1957' J. SCIURBA HYPODERMIC SYRINGE Filed Nov. 4, 1955, 2 Shets-Sheet 2 1 extremely difiicult to obtain United States Patent 2,799,271 HYPODERMIC SYRINGE Joseph Sciurba, Rutherford, N. 3. Application November 4, 1955, Serial No. 544,913 3 Claims. (Cl. 128-218) This invention relates to a hypodermic syringe and its object is to provide an improved seal between the end of the glass barrel and its metal tip or ferrule.
A further object is to provide a simple, economical, clean and efficient seal for such purpose.
Another object is to provide a seal that may be readily incorporated in a hypodermic syringe and one that will be retained in place even under various conditions of use and of sterilization of the syringe.
Further objects will appear from the description which follows.
Hypodermic syringes in general use consist of a glass barrel, a glass plunger, and a perforated cap permanently fixed to the end of the barrel and to which a hollow needle is attached. The plunger is closely fit within the barrel and its operation permits the barrel to be filled via the needle, or its contents expelled through the needle.
Heretofore, the connection between the perforation in the end wall of the barrel and the perforation in the metal cap has been dependent upon precision finishing of the barrel end and the abutting metal for its tightness. It is a perfect seal by this means. As a result, liquids escape at this connection and collect between the barrel end and its encasing metal cap. In this location it is impossible to properly clean and sterilize the syringe.
My invention provides a perfect seal and one that is not dislodged or deteriorated under repeated use and sterilization of the syringe and one which prevents contamination of the syringe contents.
The invention is illustrated in the accompanying drawings in which:
Figure 1 is a front elevational view of a syringe barrel with perforated metal cap secured thereto.
Figure 2 is an enlarged cross sectional view of the perforated metal cap showing its sealed connection with the syringe barrel.
Figure 3 is a plan View of the continuous yieldable ring used to form the seal between the syringe barrel and the perforated metal cap.
Figure 4 is an elevational view of the continuous yieldable ring of Figure 3.
Figure 5 is a fragmentary cross sectional view of the perforated, metal cap showing the continuous yieldable ring in position before crimping.
Referring to the drawings in which the same number or letter refers to the same or a similar part, Figure 1 shows hypodermic syringe S, consisting of barrel B with the finger piece of plunger P protruding from its flanged end. At the other end or tip of barrel B is metal tip 1. Metal tip 1 outwardly exhibits perforated metal cap 2, lock 4 and needle receptacle 3.
Figure 2 shows in detail the assembly of metal tip 1, to glass tip 9 of barrel B. Glass tip 9 is frictionally seated within recess 2' of perforated metal cap 2. Perforation 10 extending through the end wall of glass tip 9 gives access to the interior of barrel B. Perforation 6 extends the length of metal tip 1 through perforated metal cap 2 and needle receptacle 3. Surrounding needle receptacle 3 and an integral part of metal tip 1 is needle lock 4 into which a needle assembly (not shown) may be removably secured.
Circumferential groove 5 in perforated metal cap 2 surrounds the opening of perforation 6 and into this groove continuous yieldable ring 7 is seated, the lower portion 7 being gripped by crimping with the turned out wall 8 at the perforation opening. The perforated wall of glass tip 9 bears upon the upper edge of continuous yieldable ring 7.
Continuous yieldable ring 7 is made of a yieldable heat resistant material such as neoprene, nylon, teflon or the like. Many materials now well-known and widely used are Suited for the purpose of effecting a sealing engagement. Figures 3, 4 and 5 show the continuous yieldable ring to be collar-like in shape before being crimped in place. Figure 5 shows continuous yieldable ring 7 seated in groove 5 prior to crimping. After crimping continuous yieldable ring 7 metal tip 1 is forced onto glass tip 9 to the position shown in Figure 2.
Various modifications may be made in the construction, shape and method of holding the continuous yieldable ring in place without departing from the spirit and scope of this invention.
The construction herein described is, therefore, illustrative only, and not to be construed as a limitation upon the scope of this invention.
What I claim is:
1. A hypodermic syringe comprising a glass barrel open at one end and terminating at the other end in a perforated wall; a mating glass plunger slidable in the barrel; a perforated cap encasing the walled end of the barrel with its perforation concentrically aligned with the perforation in the wall and having a groove in its inner surface surrounding the perforation; anda continuous yieldable ring seated in such groove and extending beyond the top thereof in sealing engagement with the end of the barrel.
2. A hypodermic syringe comprising a glass barrel open at one end and terminating at the other end in a perforated wall; a mating glass plunger slidable in the barrel; a perforated cap encasing the walled end of the barrel with its perforation concentrically aligned with the perforation in the Wall and having a groove in its inner surface surrounding the perforation; a continuous yieldable ring seated in such groove and extending beyond the top thereof in sealing engagement with the end of the barrel; and means for securing the ring in the groove.
3. A hypodermic syringe comprising a glass barrel open at one end and terminating at the other end in a perforated wall; a mating glass plunger slidable in the barrel; a perforated cap encasing the walled end of the barrel with its perforation concentrically aligned with the perforation in the wall and having a groove in its inner surface adjacent to and surrounding the perforation; a continuous yieldable ring seated in such groove and extending beyond the top thereof in sealing engagement with the end of the barrel; and a partition wall between the groove and the perforation in the cap bent outward from the perforation against the ring.
References Cited in the file of this patent UNITED STATES PATENTS
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US544913A US2799271A (en) | 1955-11-04 | 1955-11-04 | Hypodermic syringe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US544913A US2799271A (en) | 1955-11-04 | 1955-11-04 | Hypodermic syringe |
Publications (1)
Publication Number | Publication Date |
---|---|
US2799271A true US2799271A (en) | 1957-07-16 |
Family
ID=24174105
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US544913A Expired - Lifetime US2799271A (en) | 1955-11-04 | 1955-11-04 | Hypodermic syringe |
Country Status (1)
Country | Link |
---|---|
US (1) | US2799271A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3048172A (en) * | 1960-05-20 | 1962-08-07 | East Rutherford Syringes Inc | Hypodermic syringe |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1471644A (en) * | 1921-03-19 | 1923-10-23 | Bandman Albert | Syringe |
US2656836A (en) * | 1950-09-26 | 1953-10-27 | Bishop & Co Platinum Works J | Hypodermic syringe |
US2767710A (en) * | 1952-11-06 | 1956-10-23 | Premo Pharmaccutical Lab Inc | Hypodermic syringes |
-
1955
- 1955-11-04 US US544913A patent/US2799271A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1471644A (en) * | 1921-03-19 | 1923-10-23 | Bandman Albert | Syringe |
US2656836A (en) * | 1950-09-26 | 1953-10-27 | Bishop & Co Platinum Works J | Hypodermic syringe |
US2767710A (en) * | 1952-11-06 | 1956-10-23 | Premo Pharmaccutical Lab Inc | Hypodermic syringes |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3048172A (en) * | 1960-05-20 | 1962-08-07 | East Rutherford Syringes Inc | Hypodermic syringe |
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