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US1852658A - Liquid ejecting device - Google Patents

Liquid ejecting device Download PDF

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Publication number
US1852658A
US1852658A US456708A US45670830A US1852658A US 1852658 A US1852658 A US 1852658A US 456708 A US456708 A US 456708A US 45670830 A US45670830 A US 45670830A US 1852658 A US1852658 A US 1852658A
Authority
US
United States
Prior art keywords
cartridge
rod
plug
liquid
shell
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
US456708A
Inventor
Clifford S Kile
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 US456708A priority Critical patent/US1852658A/en
Application granted granted Critical
Publication of US1852658A publication Critical patent/US1852658A/en
Anticipated expiration legal-status Critical
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
    • 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
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31565—Administration mechanisms, i.e. constructional features, modes of administering a dose
    • A61M5/3159—Dose expelling manners
    • A61M5/31591—Single dose, i.e. individually set dose administered only once from the same medicament reservoir, e.g. including single stroke limiting means
    • 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
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31565—Administration mechanisms, i.e. constructional features, modes of administering a dose
    • A61M5/3159—Dose expelling manners
    • A61M5/31593—Multi-dose, i.e. individually set dose repeatedly administered from the same medicament reservoir
    • A61M5/31595—Pre-defined multi-dose administration by repeated overcoming of means blocking the free advancing movement of piston rod, e.g. by tearing or de-blocking
    • 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
    • A61M2005/2414—Ampoule inserted into the ampoule holder from the side
    • 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
    • A61M2005/2477—Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic comprising means to reduce play of ampoule within ampoule holder, e.g. springs
    • 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
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31533—Dosing mechanisms, i.e. setting a dose
    • A61M5/31545—Setting modes for dosing
    • A61M5/31548—Mechanically operated dose setting member
    • A61M5/3156—Mechanically operated dose setting member using volume steps only adjustable in discrete intervals, i.e. individually distinct intervals

Definitions

  • the invention relates to a new and improved device for ejecting liquid in small measured quantities, being designed primarily for use by dentists to supply the proper amount of acid or other liquid to a predetermined quantity of cement powder for mixing to the proper consistency.
  • the deivce is of a general type in which a cartridge of liquid is placed in a tubular shell which is provided with a plunger for advancing a piston plug in the cartridge to expel the liquid through a tubular needle, the prinicpal object of the invention being to provide a unique and advantageous adjustable stop for controlling the forward movement of the plunger so that any required amount of liquid may be ejected.
  • Fig. 1 is a side elevation showing the cartridge started into the shell.
  • Fig. 2 is a vertical longitudinal sectional view showing the rear end of the cartridge engaged with the spring-pressed abutment and illustrating the front end of said cartridge in readiness for engagement with the fixed cartridge-holding abutment when said cartridge is moved slightly rearward with respect to the shell.
  • Fig. 3 is a longitudinal sectional view similar to Fig. 2 but illustrating the cartridge completely within the shell, the tubular needle inserted through the plug at the front end of said cartridge, and the piston plug partly projected by the plunger.
  • Figs. 4 and 5 are vertical transverse sectional views on lines 44 and 55 of Fig. 1.
  • ing finger pieces 10 are rigidly joined.
  • a coiled compression spring 14 is provided for normally advancing the abutment plug 13 to the limit allowed by the shoulders 11 and 12, said spring being preferably soldered or otherwise secured to said plug 13. The rear end of this spring abuts the plug 9.
  • the shell 6 is provided with a side entrance slot 15 through which a tubular cartridge 16 of liquid may be quickly and easily inserted.
  • the space between the front end of the abutment plug 13 and the rear side of the abutment wall 7, is normally somewhat less than the length of the cartridge 16 as clearly shown in Fig. 2.
  • spring 14 When the cartridge is thus within the shell, spring 14: is under tension and this tension causes firm holding of the cartridge between the 7two relatively movable abutments 13 and
  • the cartridge 16 is of a known type whose front end is closed by a plug 17 of rubber or the like.
  • the rear portion of the cartridge contains a piston plug 18 which is also usually formed from rubber. Friction between the plug 17 and the abutment wall 7 assists in holding the cartridge in the shell.
  • the piston plug 18 may be advanced in the cartridge 16 by means of a plunger 19.
  • This plunger is in the form of a rod passing slidably through openings 20 and 21 in the plugs or collars 9 and 13, the member 9 being preferably provided with a key 22 engaging a longitudinal groove 23 in the plunger rod 19, thereby preventing rotation of the rod with respect to the remainder of the device.
  • the front end of rod 19 is provided with an enlargement 24; to engage and advance the piston plug 18, and the rear end of said rod 19 is provided with a removable knob 25.
  • Slidable along the rear portion of rod 19, is a collar 26 having a key 27 slidable in the groove 23.
  • a member 28 Pivoted upon this collar is a member 28 having a lateral thumb-piece 29 and a forwardly projecting arm 30, the latter having a detent 31 which may be engaged with any of a plurality of sockets 32 in the rod 19.
  • this rod advances the piston plug 18 to discharge the required amount of liquid through a tubular needle 33.
  • This needle is provided with an appropriate finger-piece 3-1 and is not inserted through the plug 17 until its use is required. A ter such use, the needle is withdrawn and the needle formed opening in the plug 17 immediately seals, again hermetically sealing the cartridge 16.
  • I claim 1 In a liquid ejector embodying a barrel, and a plunger rod extending into said barrel; a collar slidable along said rod, shoulders spaced apart along said rod, and a combined thrust-receiving and stop member pivoted to said collar, said member having a thrust-receiving portion projecting laterally from said rod and another portion extending longitudinally of said rod, the latter portion having a detent to engage any of said shoulders.
  • liquid ejector embodying a barrel, and aplunger rod extending into said barrel;
  • a collar slidable upon said rod, shoulders spaced apart along said rod, a thumb-piece projecting laterally from said collar, means mounting said thumb-piece on said collar for movement forwardly and rearwardly with respect to the collar in a direction longitudinally of said rod, and a stop member adapted for engagement with any of said shoulders to hold the collar in desired position upon the plunger rod, said thumb-piece and stop memher being so connected that forward pushing upon said thumb-piece to operate said plunger rod, holds said stop member in operative position.

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)

Description

April 1932- c. s. KlLE LIQUID EJECTING DEVICE Filed May 28. 1930 naw um Vw 6410mm Patented Apr. 5, 1932 UNITED STAT CLIFFORD S. KILE, OF HUTCHINSON, KANSAS LIQUID EJEGTING DEVICE Application filed. May 28,
The invention relates to a new and improved device for ejecting liquid in small measured quantities, being designed primarily for use by dentists to supply the proper amount of acid or other liquid to a predetermined quantity of cement powder for mixing to the proper consistency.
The deivce is of a general type in which a cartridge of liquid is placed in a tubular shell which is provided with a plunger for advancing a piston plug in the cartridge to expel the liquid through a tubular needle, the prinicpal object of the invention being to provide a unique and advantageous adjustable stop for controlling the forward movement of the plunger so that any required amount of liquid may be ejected.
With the foregoing in view, the invention resides in the novel subject matter hereinafter described and claimed, description being accomplished by reference to the accompanying drawings.
Fig. 1 is a side elevation showing the cartridge started into the shell.
Fig. 2 is a vertical longitudinal sectional view showing the rear end of the cartridge engaged with the spring-pressed abutment and illustrating the front end of said cartridge in readiness for engagement with the fixed cartridge-holding abutment when said cartridge is moved slightly rearward with respect to the shell.
Fig. 3 is a longitudinal sectional view similar to Fig. 2 but illustrating the cartridge completely within the shell, the tubular needle inserted through the plug at the front end of said cartridge, and the piston plug partly projected by the plunger.
Figs. 4 and 5 are vertical transverse sectional views on lines 44 and 55 of Fig. 1.
A construction which has proven to be very advantageous and desirable from all standpoints, is herein disclosed. The descriptive matter will be directed rather specifically to this embodiment of the invention, but atten- 1930. Serial No. 456,708.
ing finger pieces 10 are rigidly joined.
Spaced somewhat in advance of the plug 9, is an annular rearwardly facing shoulder 11 formed in the shell 6, said shoulder normally abutting a similar but forwardly facing shoulder 12 on a cylindrical rear abutment 13 which is slidably mounted in the rear end of the shell. A coiled compression spring 14: is provided for normally advancing the abutment plug 13 to the limit allowed by the shoulders 11 and 12, said spring being preferably soldered or otherwise secured to said plug 13. The rear end of this spring abuts the plug 9.
From a point slightly in advance of the plug 13, entirely to the wall 7 the shell 6 is provided with a side entrance slot 15 through which a tubular cartridge 16 of liquid may be quickly and easily inserted. The space between the front end of the abutment plug 13 and the rear side of the abutment wall 7, is normally somewhat less than the length of the cartridge 16 as clearly shown in Fig. 2. Thus, when the cartridge is partially inserted through the slot 15 and disposed in contact with the plug 13, it is necessary to rearwardly shift said cartridge to some extent, the springpressed abutment 13 moving rearwardly during such shifting. Then, the cartridge may be swung about the abument 13 as a pivot, so that its front end also is within the shell 6. When the cartridge is thus within the shell, spring 14: is under tension and this tension causes firm holding of the cartridge between the 7two relatively movable abutments 13 and The cartridge 16 is of a known type whose front end is closed by a plug 17 of rubber or the like. The rear portion of the cartridge contains a piston plug 18 which is also usually formed from rubber. Friction between the plug 17 and the abutment wall 7 assists in holding the cartridge in the shell.
The piston plug 18 may be advanced in the cartridge 16 by means of a plunger 19. This plunger is in the form of a rod passing slidably through openings 20 and 21 in the plugs or collars 9 and 13, the member 9 being preferably provided with a key 22 engaging a longitudinal groove 23 in the plunger rod 19, thereby preventing rotation of the rod with respect to the remainder of the device. The front end of rod 19 is provided with an enlargement 24; to engage and advance the piston plug 18, and the rear end of said rod 19 is provided with a removable knob 25. Slidable along the rear portion of rod 19, is a collar 26 having a key 27 slidable in the groove 23. Pivoted upon this collar is a member 28 having a lateral thumb-piece 29 and a forwardly projecting arm 30, the latter having a detent 31 which may be engaged with any of a plurality of sockets 32 in the rod 19. By engaging the detent 31 with one or another of the sockets 32, engaging the first and second fingers with the finger pieces 10, engaging the thumb with the thumb piece 29 and by means of the latter forwardly forcing the rod 19, this rod advances the piston plug 18 to discharge the required amount of liquid through a tubular needle 33. This needle is provided with an appropriate finger-piece 3-1 and is not inserted through the plug 17 until its use is required. A ter such use, the needle is withdrawn and the needle formed opening in the plug 17 immediately seals, again hermetically sealing the cartridge 16.
It will be seen from the above that a rather simple and inexpensive, yet an eiiicient and very desirable instrument has been provided. Particular attention is invited to the member 28 and associated features of construction for advancing the plunger rod 19 and limiting such advance, also constitute important features of the invention.
Attention is again invited to the fact that within the scope of the invention as claimed, numerous variations may be made.
I claim 1. In a liquid ejector embodying a barrel, and a plunger rod extending into said barrel; a collar slidable along said rod, shoulders spaced apart along said rod, and a combined thrust-receiving and stop member pivoted to said collar, said member having a thrust-receiving portion projecting laterally from said rod and another portion extending longitudinally of said rod, the latter portion having a detent to engage any of said shoulders.
2. In a. liquid ejector embodying a barrel, and aplunger rod extending into said barrel;
a collar slidable upon said rod, shoulders spaced apart along said rod, a thumb-piece projecting laterally from said collar, means mounting said thumb-piece on said collar for movement forwardly and rearwardly with respect to the collar in a direction longitudinally of said rod, and a stop member adapted for engagement with any of said shoulders to hold the collar in desired position upon the plunger rod, said thumb-piece and stop memher being so connected that forward pushing upon said thumb-piece to operate said plunger rod, holds said stop member in operative position.
In testimony whereof I afliX my signature.
CLIFFORD S. KILE.
US456708A 1930-05-28 1930-05-28 Liquid ejecting device Expired - Lifetime US1852658A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2653603A (en) * 1950-08-03 1953-09-29 Jr George N Hein Injection apparatus
US2671580A (en) * 1951-10-25 1954-03-09 Marlin R Henson Embalmer's cosmetic wax dispensing instrument
US2731176A (en) * 1952-01-04 1956-01-17 Crewe Samuel Extruding applicator for calking compound and the like
US2837824A (en) * 1956-03-19 1958-06-10 Edward B Moller Amalgam carrier and ejector
US2966910A (en) * 1955-07-06 1961-01-03 S & R J Everett & Co Ltd Locking devices
US3076455A (en) * 1958-12-19 1963-02-05 Robert K Mcconnaughey Holder for hypodermic syringe cartridges
EP0493639A1 (en) 1989-06-12 1992-07-08 Jules Dr. Silver Syringe for dispensing measured quantities of a material
US5468232A (en) * 1991-07-26 1995-11-21 Seikagaku Kogyo Kabushiki Kaisha(Seikagaku Corporation) Syringe
US20130018324A1 (en) * 2010-03-02 2013-01-17 Reynolds David L Injection device

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2653603A (en) * 1950-08-03 1953-09-29 Jr George N Hein Injection apparatus
US2671580A (en) * 1951-10-25 1954-03-09 Marlin R Henson Embalmer's cosmetic wax dispensing instrument
US2731176A (en) * 1952-01-04 1956-01-17 Crewe Samuel Extruding applicator for calking compound and the like
US2966910A (en) * 1955-07-06 1961-01-03 S & R J Everett & Co Ltd Locking devices
US2837824A (en) * 1956-03-19 1958-06-10 Edward B Moller Amalgam carrier and ejector
US3076455A (en) * 1958-12-19 1963-02-05 Robert K Mcconnaughey Holder for hypodermic syringe cartridges
EP0493639A1 (en) 1989-06-12 1992-07-08 Jules Dr. Silver Syringe for dispensing measured quantities of a material
US5468232A (en) * 1991-07-26 1995-11-21 Seikagaku Kogyo Kabushiki Kaisha(Seikagaku Corporation) Syringe
US5688250A (en) * 1991-07-26 1997-11-18 Seikagaku Kogyo Kabushiki Kaisha (Seikagaku Corporation) Syringe
US20130018324A1 (en) * 2010-03-02 2013-01-17 Reynolds David L Injection device
US9452267B2 (en) * 2010-03-02 2016-09-27 Duoject Medical Systems Inc. Injection device

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