US3850348A - Apparatus for injection of liquid - Google Patents

Apparatus for injection of liquid Download PDF

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Publication number
US3850348A
US3850348A US00331181A US33118173A US3850348A US 3850348 A US3850348 A US 3850348A US 00331181 A US00331181 A US 00331181A US 33118173 A US33118173 A US 33118173A US 3850348 A US3850348 A US 3850348A
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United States
Prior art keywords
cylindrical casing
casing
inner cylindrical
liquid
cylinder
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
Application number
US00331181A
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English (en)
Inventor
J Lion
F Valentin
M Bessot
C Delacote
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.)
Bpifrance Financement SA
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Agence National de Valorisation de la Recherche ANVAR
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Publication of US3850348A publication Critical patent/US3850348A/en
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Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the apparatus is generally cylindrical in shape and includes two coaxial casings: an outer transparent casing which is relatively rigid and an inner deformable casing.
  • the apparatus At its upper end the apparatus is adapted to be connected to a source of compressed gas by means of a auto tire-type valve and at its lower end the outlet flow rate is controlled by a porous plug.
  • a manometric measuring device is arranged in the inner casing which comprises a pistonand-cylinder unit with color bands for indicating the pressure therein.
  • An object of the present invention is to make such apparatus better fulfill the practical desiderata particularly with respect to convenience in use, reliability and simplicity of construction.
  • bottles placed sufficiently high above the bed of the patient or under pressure by bubbling a gas therethrough are hooked up to the patient by means of tubes which are long enough so as to give the patient a certain degree of freedom of movement.
  • Such treatment can in some case last for several weeks.
  • Syringe-type perfusers or electrically operated pumps have the drawback of being powered by an electric current.
  • a source of electricity is preferably a fixed supply since the reliability thereof is limited.
  • the equipment is cumbersome and has a considerable weight which makes it unsuitable for being transported.
  • a new type of perfuser called a chronofuser enables certain of these drawbacks to be overcome by using a clockwork for the drive means.
  • Such an apparatus is nevertheless delicate, expensive, noisy and does not enable intensive use.
  • the object of the present invention is a perfuser which operates independently, is small in size and weight, sturdy and quiet, simple to maintain and relatively inexpensive.
  • the apparatus comprises a first casing of flexible material for containing liquid connected to an outlet feed tube through a replaceable porous plug disposed in the path of flow of the liquid, a second casing surrounding the first and provided with means for connecting it to a source of compressed gas in order to create a certain level of pressure therein, manometric measuring means being provided inside the second casing for checking said pressure.
  • the two casings are cylindrical and coaxial, the first being formed of deformable plastic material and the second being formed of transparent plastic material so that the indications of the manometric measuring means contained in the second casing are viewable.
  • the manometric measuring means comprises a piston-and-cylinder unit, wherein the length extending out of the cylinder gives an indication of the pressure.
  • FIGURE of the drawing shows in crosssection an embodiment of the perfuser according to the invention.
  • FIG. 1 a first tubular casing 1 formed of transparent plastic material is shown. The ends of this casing are closed off by two end portions 2 and 3. A
  • second casing 4 also of tubular shape is disposed inside the first casing 1 and is adapted to contain the liquid to be injected.
  • the second casing is formed of a plastic material whose walls are sufficiently flexible to enable deformation.
  • the second casing is connected to the end portion 2 by means of a tubular element 5 housed inside the end portion 2 and sealingly joined by stuffing box system.
  • a threaded sleeve 6 enables the scaling function to be effected.
  • the tubular element 5 is effectively extended downwardly by a connecting member 7 having a porous plug 8 arranged inside. This porous material plug interposed in the path of flow of the liquid causes a pressure drop and assures a constant liquid flow rate.
  • the upper end of the casing 4 is closed off by a cylinder 9 disposed inside thereof.
  • a piston 10 is adapted to slide in this cylinder.
  • the upper end of the piston 10 acts as a visual indicator depending on whether a band 11 on the piston p extends beyond the cylinder 9, or not.
  • the band 11 may be red in color for example whereas a band 12 also on the piston is blue and indicates that the pressure is sufficient in the casing 1.
  • the different markings on the portion of the piston 10 which projects beyond the open end of the cylinder 9 assist in visually determining the amount of projection of that portion beyond the open end of the cylinder.
  • the upper end portion 3 of the outer casing 1 is provided with an inlet valve 13 to which a source of compressed air may be attached.
  • the valve 13 is preferably an automobile tire-type valve.
  • the casing 1 is connected to a source of compressed air to produce a particular pressure.
  • this pressure is great enough, which can be checked by the pressure indicator ll, 12 which is in its low position, the compressed air supply is disconnected and the apparatus is ready to operate.
  • the pressure exerted on the flexible casing 4 causes a slow flow of the liquid through the porous plug 8.
  • the connecting member 7 is replaceable so as to modify the flow rate by changing the plug.
  • the apparatus is filled by first producing a pressure in the casing in order to compress the casing 4. The air is thereby driven out. The filling per se is then effected by connecting the connecting member 7 to the liquid feed tube and then opening the valve 13. Owing to its elasticity, the casing 4 tends to return to its cylindrical shape. The liquid is drawn in and refills the casing 4. This is of course, carried out with the connecting member removed.
  • the connecting member is then put back into place and the valve 13 is connected to a source of compressed gas such as a pump.
  • the apparatus is then ready to be used.
  • the apparatus described above provides numerous advantages. It operates independently, is reduced in size and weight, it can be carried in a pocket or secured to the body for example an arm or leg. Further, it comprises no moving parts which makes it free from any operational mishap and renders it absolutely silent in operation. It has a very simple construction, and is simple to operate and very economical.
  • the apparatus has been described in use as a perfuser but it is obvious that it is capable of many other applications. In particular it could be used for greasing machines and in general for any problem requiring slow, regular injection of a liquid.
  • the invention is of course not limited to the embodiment described and illus* trated which is given merely by way of example.
  • Apparatus for slowly injecting a liquid comprising an inner cylinder casing of flexible material for containing the liquid to be injected; a closed transparent outer cylindrical casing surrounding said inner cylindrical casing; means providing restricted egress ofliquid from said inner cylindrical casing including an outlet tube communicating with said inner cylindrical casing and extending through said outer cylindrical casing in sealed relation thereto; means for admitting fluid under pressure into said outer cylindrical casing and outside of said inner cylindrical casing to press upon the latter in a collapsing sense to force liquid from said inner cylindrical casing through said outlet tube; a cylinder fitted within one end of said inner cylindrical casing which is remote from the communication of the latter with said outlet tube, said cylinder having a closed end within said inner cylindrical casing and an open opposite end; and a pressure indicator piston member reciprocable in said cylinder and having a portion projecting beyond said opposite end of the latter, said piston member being movable relatively to said inner cylindrical casing in response to fluid pressure in said outer cylindrical casing, whereby the moved position of said indicator piston member relative to said inner cylindrical cas

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  • 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)
  • Reciprocating Pumps (AREA)
US00331181A 1972-02-11 1973-02-09 Apparatus for injection of liquid Expired - Lifetime US3850348A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7204651A FR2172443A5 (enrdf_load_stackoverflow) 1972-02-11 1972-02-11

Publications (1)

Publication Number Publication Date
US3850348A true US3850348A (en) 1974-11-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
US00331181A Expired - Lifetime US3850348A (en) 1972-02-11 1973-02-09 Apparatus for injection of liquid

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US (1) US3850348A (enrdf_load_stackoverflow)
FR (1) FR2172443A5 (enrdf_load_stackoverflow)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2551991A1 (de) * 1974-11-19 1976-07-29 Wolfgang Dr Med Wagner Dosierende arzneispender fuer die perorale und injektionsbehandlung
US4209014A (en) * 1977-12-12 1980-06-24 Canadian Patents And Development Limited Dispensing device for medicaments
US4282881A (en) * 1979-05-10 1981-08-11 Sorenson Research Co., Inc. Manometer for infusion apparatus
US4291693A (en) * 1979-11-13 1981-09-29 Sorenson Research Company, Inc. Fluid metering device
US4626243A (en) * 1985-06-21 1986-12-02 Applied Biomedical Corporation Gravity-independent infusion system
US4781683A (en) * 1987-04-22 1988-11-01 The Johns Hopkins University Single-use, self-annulling injection syringe
US4784648A (en) * 1986-09-15 1988-11-15 Applied Biomedical Corporation Infiltration indicator and alarm
US5135500A (en) * 1989-10-31 1992-08-04 Prime Medical Products, Inc. Self-driven pump device
US5458275A (en) * 1994-07-11 1995-10-17 Liquid Control Corporation Positive-displacement dispensing device
US5643224A (en) * 1994-03-04 1997-07-01 Szapiro; Jaime Luis Safety valve plug for disposable pre-filled syringes
US5779798A (en) * 1994-08-01 1998-07-14 Eastman Kodak Company Device for distributing liquid by gravity
US6371937B1 (en) 2000-03-27 2002-04-16 I-Flow Corporation Manometer infusion apparatus

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2766907A (en) * 1955-03-15 1956-10-16 Robbins Instr Corp Pressure infusion apparatus
US3244173A (en) * 1963-01-07 1966-04-05 Parke Davis & Co Syringe
US3468308A (en) * 1966-01-17 1969-09-23 Howard R Bierman Pressure infusion device for ambulatory patients with pressure control means
US3486539A (en) * 1965-09-28 1969-12-30 Jacuzzi Bros Inc Liquid dispensing and metering assembly
US3677089A (en) * 1970-03-18 1972-07-18 Martin Ind Inc Pressure gauge

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2766907A (en) * 1955-03-15 1956-10-16 Robbins Instr Corp Pressure infusion apparatus
US3244173A (en) * 1963-01-07 1966-04-05 Parke Davis & Co Syringe
US3486539A (en) * 1965-09-28 1969-12-30 Jacuzzi Bros Inc Liquid dispensing and metering assembly
US3468308A (en) * 1966-01-17 1969-09-23 Howard R Bierman Pressure infusion device for ambulatory patients with pressure control means
US3677089A (en) * 1970-03-18 1972-07-18 Martin Ind Inc Pressure gauge

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2551991A1 (de) * 1974-11-19 1976-07-29 Wolfgang Dr Med Wagner Dosierende arzneispender fuer die perorale und injektionsbehandlung
US4209014A (en) * 1977-12-12 1980-06-24 Canadian Patents And Development Limited Dispensing device for medicaments
US4282881A (en) * 1979-05-10 1981-08-11 Sorenson Research Co., Inc. Manometer for infusion apparatus
US4291693A (en) * 1979-11-13 1981-09-29 Sorenson Research Company, Inc. Fluid metering device
US4626243A (en) * 1985-06-21 1986-12-02 Applied Biomedical Corporation Gravity-independent infusion system
US4784648A (en) * 1986-09-15 1988-11-15 Applied Biomedical Corporation Infiltration indicator and alarm
US4781683A (en) * 1987-04-22 1988-11-01 The Johns Hopkins University Single-use, self-annulling injection syringe
US5135500A (en) * 1989-10-31 1992-08-04 Prime Medical Products, Inc. Self-driven pump device
US5643224A (en) * 1994-03-04 1997-07-01 Szapiro; Jaime Luis Safety valve plug for disposable pre-filled syringes
US5458275A (en) * 1994-07-11 1995-10-17 Liquid Control Corporation Positive-displacement dispensing device
US5779798A (en) * 1994-08-01 1998-07-14 Eastman Kodak Company Device for distributing liquid by gravity
US6371937B1 (en) 2000-03-27 2002-04-16 I-Flow Corporation Manometer infusion apparatus

Also Published As

Publication number Publication date
FR2172443A5 (enrdf_load_stackoverflow) 1973-09-28

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