CA2021567A1 - Disposable syringe and injector - Google Patents
Disposable syringe and injectorInfo
- Publication number
- CA2021567A1 CA2021567A1 CA 2021567 CA2021567A CA2021567A1 CA 2021567 A1 CA2021567 A1 CA 2021567A1 CA 2021567 CA2021567 CA 2021567 CA 2021567 A CA2021567 A CA 2021567A CA 2021567 A1 CA2021567 A1 CA 2021567A1
- Authority
- CA
- Canada
- Prior art keywords
- syringe
- orifice
- plug
- injector
- injection
- 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.)
- Granted
Links
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
In general, syringes for needleless injectors must be reasonably accurately dimensioned, and the barrel of the injector must be formed of metal in order to prevent expansion of the syringe under pressure. A simple alternative is a syringe including an elongated tubular body with one open end and a closed end containing an injection orifice, and a plug slidable in the body with a prong at one end of the plug extending. towards the orifice end of the body, the prong carrying an O-ring and an annular seal which prevents squeezing of the O-ring between the body of the syringe and the plug under injection pressures. An alternative form of syringe includes a pair of valves, one of which normally closes the injection orifice, and the other of which is mounted on the plug. The orifice valve opens under injection pressure to permit the passage of medicine from the syringe body through the orifice, and the other valve opens when the plug, which contains a longitudinally extending passage, is moved away from the orifice end of the syringe body. With such syringes, the body of the injector can be manufactured from plastic, as can the barrel for receiving the syringe.
Moreover parts no longer need to be particularly accurately dimensioned.
Moreover parts no longer need to be particularly accurately dimensioned.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA 2021567 CA2021567C (en) | 1990-07-19 | 1990-07-19 | Disposable syringe and injector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA 2021567 CA2021567C (en) | 1990-07-19 | 1990-07-19 | Disposable syringe and injector |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2021567A1 true CA2021567A1 (en) | 1992-01-20 |
CA2021567C CA2021567C (en) | 2002-02-05 |
Family
ID=4145526
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA 2021567 Expired - Lifetime CA2021567C (en) | 1990-07-19 | 1990-07-19 | Disposable syringe and injector |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2021567C (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
PL2532378T3 (en) | 2004-12-01 | 2016-11-30 | Needle-free injector |
-
1990
- 1990-07-19 CA CA 2021567 patent/CA2021567C/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CA2021567C (en) | 2002-02-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |