WO1993019795A1 - Instrument for the injection of pharmaceutical solutions in cartridges - Google Patents

Instrument for the injection of pharmaceutical solutions in cartridges Download PDF

Info

Publication number
WO1993019795A1
WO1993019795A1 PCT/EP1993/000774 EP9300774W WO9319795A1 WO 1993019795 A1 WO1993019795 A1 WO 1993019795A1 EP 9300774 W EP9300774 W EP 9300774W WO 9319795 A1 WO9319795 A1 WO 9319795A1
Authority
WO
WIPO (PCT)
Prior art keywords
plunger
holder
syringe according
barrel
channel
Prior art date
Application number
PCT/EP1993/000774
Other languages
French (fr)
Inventor
Giovanni Seghi
Original Assignee
L. Molteni & C. Dei F.Lli Alitti S.P.A.
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 L. Molteni & C. Dei F.Lli Alitti S.P.A. filed Critical L. Molteni & C. Dei F.Lli Alitti S.P.A.
Publication of WO1993019795A1 publication Critical patent/WO1993019795A1/en

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
    • A61M5/24—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
    • A61M5/24—Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic
    • A61M2005/2403—Ampoule inserted into the ampoule holder
    • A61M2005/2407—Ampoule inserted into the ampoule holder from the rear
    • 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
    • A61M2005/2485—Ampoule holder connected to rest of syringe
    • A61M2005/2488—Ampoule holder connected to rest of syringe via rotation, e.g. threads or bayonet
    • 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
    • A61M5/3129—Syringe barrels
    • A61M5/3137—Specially designed finger grip means, e.g. for easy manipulation of the syringe rod
    • A61M2005/3139—Finger grips not integrally formed with the syringe barrel, e.g. using adapter with finger grips

Definitions

  • the present invention refers to an instrument (syringe) for the injection of pharmacological solutions in cartridges , consisting of only two parts (plunger-holder with relevant plunger and barrel) plus needle , which may be easily assembled by a bayonet joint.
  • cartridges special vials , called cartridges , containing the solution to be injected are used in some particular cases , such as e. g . in the dental practice .
  • Said cartridges are utilized in ad hoc syringes .
  • Said syringes usually of metal , consist of a barrel integral with the plunger-holder and relevant plunger , and pierced for cartridge insertion .
  • the hole is closed by the plunger , usually actuated by a spring.
  • the plunger is withdrawn to allow cartridge insertion .
  • the said syringes are efficient , but complex to construct . Furthermore, between one injection and the next one , they have to be sterilized which causes idle time . Finally, being rather heavy , they are uneasy to handle . Disclosure of invention
  • the present invention obviates the aforesaid disadvantages , its object being a syringe consisting of only two parts , with the plunger-holder being joined to the barrel by- a bayonet joint, which allows the cartridge easy insertion and removal . Furthermore, after each injection, only the barrel is to be sterilized. It follows that the plunger-holder may be immediately reused and, consequently, the number of syringes required is reduced. Furthermore, the syringe as per the present invention is very easy to construct, assemble, and handle.
  • Figure 1 shows the syringe plunger-holder as per the invention
  • Figure 2 shows the barrel where the cartridge is inserted
  • Figure 3 shows the assembled syringe fitted with the needle, ready for use.
  • the plunger-holder 100 consists of essentially cylindrical hollow structure 10 with an extended narrower channel- shaped section 11, where plunger 12 is free to slide, communicating with a broader section 13 where the barrel 200 (Fig. 2) is inserted.
  • channel 11 accommodate at least two fins 14 integral with the plunger-holder 100, answering the purpose of strengthening channel 11.
  • Channel 11 allows plunger 12 to slide and prevents the bending or breaking, if any, of same, which might be caused by excessive stress.
  • the inner wall of section 13 accommodates projection 15, which may be bayonet engaged in L-shaped groove 16 made in the barrel 200 on the opposite side to needle insertion channel 17-
  • Plunger 12 is provided, at the rod bottom, with two ledges 18 preventing it from sliding out of channel 11 when pulled and, on the rod top, with a suitable hold and thrust means 19, such as e.g. a cap, a button, or a ring - as is the case of Fig. 1 - or with other means meant to facilitate the operator's plunger hold and thrust.
  • a suitable hold and thrust means 19 such as e.g. a cap, a button, or a ring - as is the case of Fig. 1 - or with other means meant to facilitate the operator's plunger hold and thrust.
  • the bottom 20 of plunger 12 is fork shaped, essentially conical, with two prongs which allow, hanks to the elasticity on syringe assembling, the plunger insertion by pressure into essentially cylindrical structure 10 from the outside through channel 11.
  • Suitable hold means 21 may be envisaged on the outer part of essentially cylindrical structure 10.
  • the barrel 200 (Fig. 2) accommodates at the top L groove 16, where, as mentioned above, projection 15 is engaged and at the bottom, channel 17 or needle insertion.
  • the external walls of said channel are preferably threaded to allow the screwing of the base the needle is usually mounted on.
  • the barrel 200 internal walls may be provided with ribs which facilitate cartridge positioning in line with plunger and needle, respectively.
  • the plunger-holder 100 may be easily moulded in a single piece consisting of essentially cylindrical structure 10, fins 14, projection 15, and hold means 21.
  • the plunger On assembling, the plunger may be inserted in channel 11 either from the outside, using fork 20, or from the inside from hollow space 13, in which case hold and thrust means is to be applied after plunger insertion.
  • the positions of projection 15 and L groove 16 may be reversed, i.e. projection 15 may be in the barrel 200 and L groove 16 in the wall of section 13 of essentially cylindrical structure 10. The operation of the claimed syringe is evident.
  • the cartridge containing the solution to be injected is inserted in the barrel 200.
  • the plunger-holder 100 is then fixed by allowing projection 15 to engage with groove 16 by rotation.
  • the needle is screwed to needle-holder channel 17 and the cartridge- sealing membrane is pierced by the needle top.
  • the needle is thrown away, the syringe is opened by plunger-holder 100 removal, the empty cartridge is removed and the barrel 200 is sterilized.
  • the plunger-holder 100 may be immediately reutilized with another barrel 200, either new or previously sterilized.
  • the syringe as per the present invention may be obtained in any suitable material, particularly in rigid plastic materials, which can be easily moulded in the desired shapes, with production of very light syringes.

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

Device (syringe) for the injection of pharmacological solution in cartridges, consisting of only two parts: a plunger-holder (100) and a barrel (200). The parts are easily assembled by a bayonet joint.

Description

INSTRUMENT FOR THE INJECTION OF PHARMACEUTICAL SOLUTIONS IN CARTRIDGES Technical field
The present invention refers to an instrument (syringe) for the injection of pharmacological solutions in cartridges , consisting of only two parts (plunger-holder with relevant plunger and barrel) plus needle , which may be easily assembled by a bayonet joint. Background art As known, special vials , called cartridges , containing the solution to be injected are used in some particular cases , such as e. g . in the dental practice . Said cartridges are utilized in ad hoc syringes . Said syringes , usually of metal , consist of a barrel integral with the plunger-holder and relevant plunger , and pierced for cartridge insertion . At rest , the hole is closed by the plunger , usually actuated by a spring. Just before use , the plunger is withdrawn to allow cartridge insertion . The said syringes are efficient , but complex to construct . Furthermore , between one injection and the next one , they have to be sterilized which causes idle time . Finally, being rather heavy , they are uneasy to handle . Disclosure of invention
The present invention obviates the aforesaid disadvantages , its object being a syringe consisting of only two parts , with the plunger-holder being joined to the barrel by- a bayonet joint, which allows the cartridge easy insertion and removal . Furthermore, after each injection, only the barrel is to be sterilized. It follows that the plunger-holder may be immediately reused and, consequently, the number of syringes required is reduced. Furthermore, the syringe as per the present invention is very easy to construct, assemble, and handle.
Brief description of the drawings
Figures 1 to 3 attached hereto, which are conveyed by way of indication and not of limitation, illustrate the characteristics and advantages of the present invention.
Figure 1 shows the syringe plunger-holder as per the invention, Figure 2 shows the barrel where the cartridge is inserted, and
Figure 3 shows the assembled syringe fitted with the needle, ready for use.
Best Bode for carrying out the invention
As shown in Fig. 1, the plunger-holder 100 consists of essentially cylindrical hollow structure 10 with an extended narrower channel- shaped section 11, where plunger 12 is free to slide, communicating with a broader section 13 where the barrel 200 (Fig. 2) is inserted.
The external walls of channel 11 accommodate at least two fins 14 integral with the plunger-holder 100, answering the purpose of strengthening channel 11. Channel 11 allows plunger 12 to slide and prevents the bending or breaking, if any, of same, which might be caused by excessive stress.
The inner wall of section 13 accommodates projection 15, which may be bayonet engaged in L-shaped groove 16 made in the barrel 200 on the opposite side to needle insertion channel 17-
Plunger 12 is provided, at the rod bottom, with two ledges 18 preventing it from sliding out of channel 11 when pulled and, on the rod top, with a suitable hold and thrust means 19, such as e.g. a cap, a button, or a ring - as is the case of Fig. 1 - or with other means meant to facilitate the operator's plunger hold and thrust. According to a particular embodiment of the present invention, the bottom 20 of plunger 12 is fork shaped, essentially conical, with two prongs which allow, hanks to the elasticity on syringe assembling, the plunger insertion by pressure into essentially cylindrical structure 10 from the outside through channel 11. Suitable hold means 21 may be envisaged on the outer part of essentially cylindrical structure 10. The barrel 200 (Fig. 2) accommodates at the top L groove 16, where, as mentioned above, projection 15 is engaged and at the bottom, channel 17 or needle insertion. The external walls of said channel are preferably threaded to allow the screwing of the base the needle is usually mounted on. The barrel 200 internal walls may be provided with ribs which facilitate cartridge positioning in line with plunger and needle, respectively.
It is to be stressed that the plunger-holder 100 may be easily moulded in a single piece consisting of essentially cylindrical structure 10, fins 14, projection 15, and hold means 21. On assembling, the plunger may be inserted in channel 11 either from the outside, using fork 20, or from the inside from hollow space 13, in which case hold and thrust means is to be applied after plunger insertion. Obviously, the positions of projection 15 and L groove 16 may be reversed, i.e. projection 15 may be in the barrel 200 and L groove 16 in the wall of section 13 of essentially cylindrical structure 10. The operation of the claimed syringe is evident. The cartridge containing the solution to be injected is inserted in the barrel 200. The plunger-holder 100 is then fixed by allowing projection 15 to engage with groove 16 by rotation. Finally, the needle is screwed to needle-holder channel 17 and the cartridge- sealing membrane is pierced by the needle top. Once the injection has been made, the needle is thrown away, the syringe is opened by plunger-holder 100 removal, the empty cartridge is removed and the barrel 200 is sterilized. The plunger-holder 100 may be immediately reutilized with another barrel 200, either new or previously sterilized. The syringe as per the present invention may be obtained in any suitable material, particularly in rigid plastic materials, which can be easily moulded in the desired shapes, with production of very light syringes.

Claims

CLAIMS 1. Device (syringe) for the injection of pharmacological solutions in cartridges, consisting of only two parts (plunger-holder (100) with relevant plunger and barrel (200)) plus needle, which may be easily assembled by a bayonet joint. 2. The syringe according to claim 1, wherein the plunger-holder (100) consists of essentially cylindrical hollow structure (10) with an extended narrower channel-shaped section (11), where plunger (12) is free to slide, communicating with a broader section (13) where the barrel (200) is inserted by means of a bayonet joint, consisting of projection (15) and L groove (16), respectively, on the internal wall of said broader section 13 and on the external wall of said barrel (200) , or vice-versa. 3> The syringe according to claim 2, wherein said channel shaped section (11) external walls accommodate at least two fins (1^) integral with the plunger-holder (100). 4. The syringe according to claim 3. wherein the plunger-holder (100) and the plunger (12) top are provided with suitable hold and thrust means. 5 ' The syringe according to claim 4, wherein the plunger-holder (100) is moulded in a single piece. 6. The syringe according to claim 4, wherein the plunger bottom has two ledges (18) preventing the plunger (12) from sliding out of the plunger-holder (100) when pulled before injection. 7- The syringe according to claim 6, wherein the plunger (12) bottom is conical-fork shaped, with prongs elastically drawing together on insertion through channel (11 ) and then regaining the initial position. 8. The syringe according to the preceding claims obtained in rigid plastic material.
PCT/EP1993/000774 1992-04-06 1993-03-31 Instrument for the injection of pharmaceutical solutions in cartridges WO1993019795A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITFI920083A IT1262900B (en) 1992-04-06 1992-04-06 DEVICE FOR INJECTION OF PHARMACEUTICAL SOLUTIONS CONTAINED IN CARTRIDGE
ITFI92A000083 1992-04-06

Publications (1)

Publication Number Publication Date
WO1993019795A1 true WO1993019795A1 (en) 1993-10-14

Family

ID=11350044

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1993/000774 WO1993019795A1 (en) 1992-04-06 1993-03-31 Instrument for the injection of pharmaceutical solutions in cartridges

Country Status (3)

Country Link
AU (1) AU3949693A (en)
IT (1) IT1262900B (en)
WO (1) WO1993019795A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0894014A1 (en) * 1996-02-20 1999-02-03 Abbott Laboratories Hypodermic syringe holder with disposable body
WO2000035519A1 (en) * 1998-12-15 2000-06-22 Achim Berlovan Syringe and coordinated needle set for injections and more specifically for orthodental anesthesia
KR200456373Y1 (en) 2010-08-18 2011-10-27 서용선 The dental syringe with assistant pressure part for local anesthesia
WO2014184321A3 (en) * 2013-05-15 2015-01-08 Pro Surgical Limited Syringes

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB787090A (en) * 1955-06-24 1957-12-04 British Xylonite Co Ltd Improvements relating to ampoules
US3115135A (en) * 1962-03-12 1963-12-24 Stanley J Sarnoff Aspirating piston and plunger coupling
CH403164A (en) * 1961-06-22 1965-11-30 Hoechst Ag Injection instrument made of plastic with an injection ampoule or injection cartridge
GB1097671A (en) * 1964-04-10 1968-01-03 Willows Francis Ltd Improvements in and relating to cartridge syringes
WO1989004680A1 (en) * 1987-11-17 1989-06-01 Seldoren Limited A detachable housing for a syringe

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB787090A (en) * 1955-06-24 1957-12-04 British Xylonite Co Ltd Improvements relating to ampoules
CH403164A (en) * 1961-06-22 1965-11-30 Hoechst Ag Injection instrument made of plastic with an injection ampoule or injection cartridge
US3115135A (en) * 1962-03-12 1963-12-24 Stanley J Sarnoff Aspirating piston and plunger coupling
GB1097671A (en) * 1964-04-10 1968-01-03 Willows Francis Ltd Improvements in and relating to cartridge syringes
WO1989004680A1 (en) * 1987-11-17 1989-06-01 Seldoren Limited A detachable housing for a syringe

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0894014A1 (en) * 1996-02-20 1999-02-03 Abbott Laboratories Hypodermic syringe holder with disposable body
EP0894014A4 (en) * 1996-02-20 1999-12-22 Abbott Lab Hypodermic syringe holder with disposable body
WO2000035519A1 (en) * 1998-12-15 2000-06-22 Achim Berlovan Syringe and coordinated needle set for injections and more specifically for orthodental anesthesia
KR200456373Y1 (en) 2010-08-18 2011-10-27 서용선 The dental syringe with assistant pressure part for local anesthesia
WO2014184321A3 (en) * 2013-05-15 2015-01-08 Pro Surgical Limited Syringes
GB2517024A (en) * 2013-05-15 2015-02-11 Pro Surgical Ltd Syringes

Also Published As

Publication number Publication date
ITFI920083A0 (en) 1992-04-06
IT1262900B (en) 1996-07-22
ITFI920083A1 (en) 1993-10-06
AU3949693A (en) 1993-11-08

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