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GB2287881A - Infusion syringe with rotary valve controlling loading and dispensing - Google Patents

Infusion syringe with rotary valve controlling loading and dispensing Download PDF

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Publication number
GB2287881A
GB2287881A GB9403556A GB9403556A GB2287881A GB 2287881 A GB2287881 A GB 2287881A GB 9403556 A GB9403556 A GB 9403556A GB 9403556 A GB9403556 A GB 9403556A GB 2287881 A GB2287881 A GB 2287881A
Authority
GB
United Kingdom
Prior art keywords
syringe
fluid
valve
port
plunger
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.)
Withdrawn
Application number
GB9403556A
Other versions
GB9403556D0 (en
Inventor
Alan William Westgarth
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB9403556A priority Critical patent/GB2287881A/en
Publication of GB9403556D0 publication Critical patent/GB9403556D0/en
Publication of GB2287881A publication Critical patent/GB2287881A/en
Withdrawn legal-status Critical Current

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
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/142—Pressure infusion, e.g. using pumps
    • A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
    • A61M5/1452—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons
    • A61M5/1454—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons spring-actuated, e.g. by a clockwork

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

A spring loaded infusion syringe having an integral three-way rotary valve or stopcock C at the delivery end of the syringe body. To load the syringe; valve C is rotated to form a continuous fluid passage between the syringe reservoir and inlet-port A. Plunger G is then withdrawn using handle E until loading of the syringe is completed after which valve C is rotated to close off the reservoir. Plunger handle B may then be unscrewed to make the unit more compact and discreet. When infusion is required Valve C is rotated to allow outflow of medicament from microbored outlet-port F due to the pressure of spring D on plunger G. The infusion rate or flow of fluid can be controlled by varying the bore diameter of outlet-port F. <IMAGE>

Description

A method of administering a controlled infusion via a spring loaded syringe.
Detailed description of the invention.
The syringe resevoir is charged by turning the valve (C) so the fluid path is aligned with the inlet (A) and the syringe resevoir (E).FIG.l.The fluid to be infused is connected to the inlet (A) and the syringe plunger (B) is drawn back against the spring tension (D) filling the syringe resevoir(E).
The valve (C) can then be turned to a position stopping the infusion being delivered to the patient through outlet (F) or back through inlet (A).FIG.2.
The syringe plunger (B)can be unscrewed from the stopper (G) making the unit more compact/discreet for the patient to carry.
The valve (C)can then be turned to position FIG.3 open to resevoir (E)and outlet (F).The spring pressure (D) forcing the stopper (G) down the barrel (H) delivering the fluid through the microbored outlet (F).
(F)is a microbored opening of a specific inside diameter allowing a controlled infusion. By varying the size of the outlet ,the amount of fluid and the duration of time it is given over can be predetermined.

Claims (1)

1)A controlled infusion syringe comprising integral rotary filling,metering and control valve.Through rotating the valve the syringe can be loaded with fluid through port 'A'.Once loaded the valve can be rotated to allow the fluid to be delivered from the syringe via a microbored outlet "F' 2) A controlled infusion syringe which is loaded by drawing back on the plunger.A spring powers the delivery of fluid from the syringe reservoir by pressurising the fluid inside the barrel.When the rotary valve is set to delivery fluid via port 'F' The patient receives a controlled amount of fluid;the amount of fluid and the duration of time to empty the syringe can be predetermined through varying the micro bore diameter to suit the time requirements.
3)A controlled infusion syringe with removable syringe plunger handle which can be unscrewed to enable the patient to carry the syringe more discreetly.
GB9403556A 1994-02-24 1994-02-24 Infusion syringe with rotary valve controlling loading and dispensing Withdrawn GB2287881A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9403556A GB2287881A (en) 1994-02-24 1994-02-24 Infusion syringe with rotary valve controlling loading and dispensing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9403556A GB2287881A (en) 1994-02-24 1994-02-24 Infusion syringe with rotary valve controlling loading and dispensing

Publications (2)

Publication Number Publication Date
GB9403556D0 GB9403556D0 (en) 1994-04-13
GB2287881A true GB2287881A (en) 1995-10-04

Family

ID=10750861

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9403556A Withdrawn GB2287881A (en) 1994-02-24 1994-02-24 Infusion syringe with rotary valve controlling loading and dispensing

Country Status (1)

Country Link
GB (1) GB2287881A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB348454A (en) * 1930-07-10 1931-05-14 Mor Kuensztler Improvements in apparatus for intravenous injection
GB621208A (en) * 1946-02-20 1949-04-06 John Herbertson Bowie Improvements in or relating to continuous injection syringe apparatus
US4813937A (en) * 1986-05-07 1989-03-21 Vaillancourt Vincent L Ambulatory disposable infusion delivery system
US4966585A (en) * 1988-05-31 1990-10-30 Gangemi Ronald J Infusion apparatus
US4997420A (en) * 1989-12-28 1991-03-05 Lefevre Robert J Portable drug delivery device including pump with tapered barrel

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB348454A (en) * 1930-07-10 1931-05-14 Mor Kuensztler Improvements in apparatus for intravenous injection
GB621208A (en) * 1946-02-20 1949-04-06 John Herbertson Bowie Improvements in or relating to continuous injection syringe apparatus
US4813937A (en) * 1986-05-07 1989-03-21 Vaillancourt Vincent L Ambulatory disposable infusion delivery system
US4966585A (en) * 1988-05-31 1990-10-30 Gangemi Ronald J Infusion apparatus
US4997420A (en) * 1989-12-28 1991-03-05 Lefevre Robert J Portable drug delivery device including pump with tapered barrel

Also Published As

Publication number Publication date
GB9403556D0 (en) 1994-04-13

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)