GB1189894A - Hypodermic Syringes - Google Patents
Hypodermic SyringesInfo
- Publication number
- GB1189894A GB1189894A GB1661168A GB1661168A GB1189894A GB 1189894 A GB1189894 A GB 1189894A GB 1661168 A GB1661168 A GB 1661168A GB 1661168 A GB1661168 A GB 1661168A GB 1189894 A GB1189894 A GB 1189894A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plunger
- valve
- piston
- compartment
- spring
- 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
Links
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
- A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
- A61M5/2033—Spring-loaded one-shot injectors with or without automatic needle insertion
-
- 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
- A61M5/24—Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic
-
- 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
- A61M5/3148—Means for causing or aiding aspiration or plunger retraction
Landscapes
- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
1,189,894. Hypodermic syringes. S. GRANT. 5 April, 1968 [5 April, 1967], No. 16611/68. Addition to 1,159,958. Heading A5R. A hypodermic syringe allowing for prior aspiration of body fluid (e.g. blood) comprises a syringe body 36, means for mounting an ampoule 41 and a needle 39 on the syringe body, a plunger 40 for driving the contents of the ampoule out through the needle, a spring 44 biassing the plunger towards the needle holder, a cylinder within the body, a piston 42 attached to the plunger and fitted for axial movement within the cylinder 43, the piston and cylinder defining a first compartment in front of the piston which when filled with damping fluid prevents movement of the plunger by the spring and a second compartment behind the piston, a conduit 46 connecting the first and second compartments, a manually operable valve 50, 52 in the conduit to control the flow of damping fluid between the compartments to allow controlled advance of the plunger under the action of the spring, and a manually operable ram movable within a chamber, 55 connected to the first compartment to force damping fluid into the first compartment (via 56, 47, 46) and thereby partially withdraw the plunger against the biassing spring. The plunger preferably has a hook on the outer end for engagement in the body of the stopper closing the end of the ampoule. The specification also discloses an improved form of valve for controlling the flow of damping fluid between the compartments for controlling the rate of injection. The valve is described with reference to Fig. 3 which illustrates a syringe wherein the valve 76 comprises a metering slide 84 movable axially through a sleeve 86 and having a recess 89 in its surface of greater axial length than the sleeve, the recess forming with the sleeve a flow passage of increasing cross-section whereby the slide progressively changes the flow through the valve.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1566606 | 1967-04-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1189894A true GB1189894A (en) | 1970-04-29 |
Family
ID=5678005
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1661168A Expired GB1189894A (en) | 1967-04-05 | 1968-04-05 | Hypodermic Syringes |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1189894A (en) |
-
1968
- 1968-04-05 GB GB1661168A patent/GB1189894A/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3570484A (en) | Intravenous valve assembly | |
US4059112A (en) | Disposable additive syringe | |
US2821193A (en) | Multiple injection inoculator instrument | |
ES428770A1 (en) | Hypodermic injection device having cannula covered with resilient sheath | |
US3138157A (en) | Inoculant injector instrument | |
GB669053A (en) | Injection device | |
ATE190510T1 (en) | INFUSION SYRINGE | |
GB1437595A (en) | Large capacity syringe | |
GB959397A (en) | Multi-dose needle-less hypodermic jet injection device | |
GB931089A (en) | Intra-dermal injector | |
ES8600063A1 (en) | Two-component medication syringe assembly. | |
US3406684A (en) | Jet type, medical injection instrument | |
GB1017496A (en) | ||
GB671741A (en) | Improvements in or relating to medical hypodermic syringes | |
US3474787A (en) | Hypodermic syringe | |
GB1189894A (en) | Hypodermic Syringes | |
GB686343A (en) | Improvements relating to hypodermic injection devices | |
GB863907A (en) | Multiple injection inoculator instrument | |
US2709433A (en) | Fluid inoculating syringe or injector | |
GB1284312A (en) | Improvements in or relating to injecting devices | |
US2317558A (en) | Hypodermic syringe construction | |
US2362165A (en) | Hypodermic syringe | |
US2586068A (en) | Syringe assembly | |
GB1402428A (en) | Injection syringes | |
GB1326848A (en) | Fluid dispensing device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed |