GB798827A - Improvements in needle-less hypodermic injectors - Google Patents
Improvements in needle-less hypodermic injectorsInfo
- Publication number
- GB798827A GB798827A GB646258A GB646258A GB798827A GB 798827 A GB798827 A GB 798827A GB 646258 A GB646258 A GB 646258A GB 646258 A GB646258 A GB 646258A GB 798827 A GB798827 A GB 798827A
- Authority
- GB
- United Kingdom
- Prior art keywords
- medicament
- plunger
- chamber
- reservoir
- knob
- 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
- A61M5/30—Syringes for injection by jet action, without needle, e.g. for use with replaceable ampoules or carpules
-
- 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
- A61M2005/3128—Incorporating one-way valves, e.g. pressure-relief or non-return valves
-
- 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
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/34—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
- A61M2005/341—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub angularly adjustable or angled away from the axis of the injector
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
798,827. Hypodermic injection devices. Z. & W. MACHINE PRODUCTS, Inc. Aug. 27, 1954, No. 6462/58. Divided out of 798,826. Class 81 (2). A needleless hypodermic injector has a plunger for discharging medicament from a medicament chamber, a reservoir carried by the body of the instrument for replenishing the medicament chamber and adjustable means for transferring a selected volume of medicament from the reservoir to the chamber. The plunger 6 and a plunger extension rod 15, which are slidable in a piston housing 3, have a bore 92 through which medicament passes into the medicament chamber A from the reservoir 104. The medicament chamber A is held between flanges 137 of a collet 136. The tip 124 of the plunger 6 forms a closure for the medicament chamber A and includes a ball valve through which medicament passes into the chamber A. The medicament reservoir 104 is threaded on the extension rod 15. On projection of a piston 107 within the reservoir 104 by rotation of a knob 116, medicament is transferred to the medicament chamber A. The face of the reservoir 104 adjacent the knob 116 has a cavity 118 containing a spring-pressed ball 119 and the knob 116 has four equally spaced depressions 117 which register in turn with the ball 119 as the knob 116 is rotated, thus giving an indication of the number of rotations completed by the knob 116 and the amount of medicament transferred to the medicament chamber A. Projection and retraction of the plunger 6 is brought about as described in Specification 798,826. The stroke of the plunger 6 is limited by abutment of a disc 102 secured to the extension rod 15 with an adjustable sleeve 98 threaded on the rear of the piston housing 3. A lever 140 pivoted on the housing 3 prevents inadvertent depression of a button 62 which is operated to release the plunger as described in Specification 798,826.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB646258A GB798827A (en) | 1954-08-27 | 1954-08-27 | Improvements in needle-less hypodermic injectors |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB646258A GB798827A (en) | 1954-08-27 | 1954-08-27 | Improvements in needle-less hypodermic injectors |
Publications (1)
Publication Number | Publication Date |
---|---|
GB798827A true GB798827A (en) | 1958-07-30 |
Family
ID=9814922
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB646258A Expired GB798827A (en) | 1954-08-27 | 1954-08-27 | Improvements in needle-less hypodermic injectors |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB798827A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101829384A (en) * | 2010-04-20 | 2010-09-15 | 中国人民解放军第三○二医院 | Needleless powder injection medicament administration device |
CN114668933A (en) * | 2016-10-31 | 2022-06-28 | 奇迹管理私人有限公司 | Safety enhanced needleless injector |
-
1954
- 1954-08-27 GB GB646258A patent/GB798827A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101829384A (en) * | 2010-04-20 | 2010-09-15 | 中国人民解放军第三○二医院 | Needleless powder injection medicament administration device |
CN114668933A (en) * | 2016-10-31 | 2022-06-28 | 奇迹管理私人有限公司 | Safety enhanced needleless injector |
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