Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
  • A61C9/00—Impression cups, i.e. impression trays; Impression methods
  • A61C9/0026—Syringes or guns for injecting impression material; Mixing impression material for immediate use
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
  • A61C5/00—Filling or capping teeth
  • A61C5/60—Devices specially adapted for pressing or mixing capping or filling materials, e.g. amalgam presses
  • A61C5/62—Applicators, e.g. syringes or guns
  • A61C5/64—Applicators, e.g. syringes or guns for multi-component compositions
• • 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
  • A61M5/31596—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms comprising means for injection of two or more media, e.g. by mixing
• • 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
  • A61M5/347—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub rotatable, e.g. bayonet or screw
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
  • B01F31/44—Mixers with shaking, oscillating, or vibrating mechanisms with stirrers performing an oscillatory, vibratory or shaking movement
  • B01F31/441—Mixers with shaking, oscillating, or vibrating mechanisms with stirrers performing an oscillatory, vibratory or shaking movement performing a rectilinear reciprocating movement
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
  • B01F33/50—Movable or transportable mixing devices or plants
  • B01F33/501—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use
  • B01F33/5011—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use portable during use, e.g. hand-held
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
  • B01F33/50—Movable or transportable mixing devices or plants
  • B01F33/501—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use
  • B01F33/5011—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use portable during use, e.g. hand-held
  • B01F33/50112—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use portable during use, e.g. hand-held of the syringe or cartridge type
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
  • B01F35/71—Feed mechanisms
  • B01F35/713—Feed mechanisms comprising breaking packages or parts thereof, e.g. piercing or opening sealing elements between compartments or cartridges
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
  • B01F35/71—Feed mechanisms
  • B01F35/713—Feed mechanisms comprising breaking packages or parts thereof, e.g. piercing or opening sealing elements between compartments or cartridges
  • B01F35/7137—Piercing, perforating or melting membranes or closures which seal the compartments
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
  • B01F35/71—Feed mechanisms
  • B01F35/716—Feed mechanisms characterised by the relative arrangement of the containers for feeding or mixing the components
  • B01F35/7161—Feed mechanisms characterised by the relative arrangement of the containers for feeding or mixing the components the containers being connected coaxially before contacting the contents
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
  • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
  • B05C17/00593—Hand tools of the syringe type
• • 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
  • A61M5/31596—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms comprising means for injection of two or more media, e.g. by mixing
  • A61M2005/31598—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms comprising means for injection of two or more media, e.g. by mixing having multiple telescopically sliding coaxial pistons encompassing volumes for components to be mixed
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
  • B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
  • B01F35/32—Driving arrangements
  • B01F35/32005—Type of drive
  • B01F35/3202—Hand driven
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
  • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
  • B05C17/00503—Details of the outlet element
  • B05C17/00516—Shape or geometry of the outlet orifice or the outlet element

Definitions

• the invention overcomes these drawbacks. It relates to an improved syringe of the type, in question with a double compartment, in which the agitation of the mixture is conveniently carried out by not using independent equipment, but maintaining the assembly in a sterile environment and producing a homogeneous mixture.
• This improved syringe of the type comprising:
• a second compartment arranged after the first and containing a second liquid intended to be combined with the first liquid, a means capable of temporarily maintaining the seal between the two liquids of the two compartments, a piston capable of sliding in the two compartments, intended to push the liquid contained in the second into the first compartment,
• An outlet nozzle fixed to the end of the first compartment is characterized in that it also comprises an organ capable of moving in the first compartment in a back-and-forth movement in the longitudinal direction and to assu ⁇ rer Agitation of the liquid contained in the first compartment.
• the agitator member is formed by a rotary longitudinal axis with fins which penetrates into the first compartment - the end of the longitudinal axis of the agitator present.
• a helical thread intended to cooperate with an identical thread cut at the downstream end of the first compartment, so that under the effect of a longitudinal thrust exerted at the end of this longitudinal axis, this sinking into the " premie compartment starts, like a top, to rotate on itself and thus to rotate the fins pla ⁇ ced at its upstream end and located in the first compartment;
• this ring comprises:
• the seal placed on the piston head is in the form of a flexible plastic lip which, when the piston moves:
• the stirring member is constituted by a disc fixed at the end of the longitudinal axis coaxial with the axis of the piston, which has orifices intended, under the effect displacement of the longitudinal axis to stir the liquid contained in the first compartment;
• Figure 1 shows in longitudinal section a set according to the invention.
• Figure 2 also shows a longitudinal section, a detailed view of the downstream end of the first compartment and incorporated agitator.
• Figure 3 shows in longitudinal section a second preferred embodiment of the invention.
• Figures 4 and 5 respectively show a front view of the stirring member and -view in section of the single-acting seal of this embodiment.
• Figure 6 is a section of a third embodiment of the invention. - -
• the syringe illustrated in figs. 1 and 2 essentially consists of - a cylindrical piston (1) with a full body, for example of injected plastic, such as polyethylene, polypropylene or any other similar plastic, comprising upstream a support head (2 ) and downstream a needle (3) carrying seals (4) from molding intended to ensure sealing;
• injected plastic such as polyethylene, polypropylene or any other similar plastic
• a cylindrical hollow body (5) forming a second compartment, also made of molded plastic, of the same kind as the piston (1), intended to receive the second liquid (10), comprising at its upstream end 'atria (6) and a stop and sealing stop (7), and at its downstream end:
• this membrane (8) for temporarily avoid the pas ⁇ sage of the second liquid (10) in the first compartment (11), but capable of breaking under the effect of the thrust exerted by the piston (1) on the liquid (10) - by way of indication, this membrane (8) can be made of a film compatible with a conch, either bonded to the downstream face, or obtained directly during the molding of the second compartment (5) ⁇ . on the other hand, seals (9), identical to (4);
• the tapered cone (15) attached (see Figure 2) at the end of the first compartment (11) has a central opening (20) inside which is formed a helical thread (21).
• the longitudinal axis (16) has, over a length substantially equal to that of the first compartment (11), an external helical thread (22) similar to (21) and intended to cooperate with it.
• the button (19) By pushing the button (19) in the direction indicated by the arrow F_ in Figure 1, the button (19), as in a router, engages the ramp of the
• the fins (17) in the first compartment (11) rotate back and forth and thereby homogenize the mixture of the two liquids contained in this body (11) .
• the upstream end (23) of the axis (16) connected to the fins (17) is hollow over a part slightly longer than the thickness of the added cone (15).
• the separation zone between .this hollow part (23) and the solid part (24 of the longitudinal external threaded axis (16) has a breaking point (25) also obtained during molding.
• the agitator assembly (16-17) is placed in the opening (20) of the first compartment (11).
• the button (19) is then snapped onto the downstream end (18).
• the compartment (11) is then filled with the expected quantity of first liquid (12).
• the second compartment is then introduced (5) closed by the membrane (8) in the first compartment (11), then the second compartment (5) is filled and finally the piston (1) is put in place.
• the assembly is then ready for operation and is placed in a possibly sterile packaging.
• the operator pushes the button (19) in the alternate direction of the arrows F_ and F__, which causes agitation by the fins (17).
• the operator releases the axis (16) from the body (11), then when the primer (25) has left the opening (20), it then exerts a transverse thrust, which breaks the axis- (16) and thus opens the channel (23).
• the mixture contained in the body (11) is then ready to be injected under the effect of a thrust exerted by the piston (1) -second compartment (5) assembly.
• the syringe essentially consists of:
• a member sliding in the body (30) forming a piston, also made of plastic, essentially consisting of a head (34), a piston pin (35) and a vertical head (36) on which comes stick a single-acting seal (37) and lip seal
• an agitator (40) also made of plastic, but however more rigid than the body (30) or the piston (35), constituted by a thrust head (41) with a solid axis (40), coaxial with the axis (35) of the piston, and an actual stirring member (42) fixed to the end of the solid axis (40) detailed in FIG. 4;
• the position of the piston head (36) and the seal (37) in the body (30) thus defines and delimits ' two compartments respectively (45) for that intended to receive the first liquid (49) and (46 ) for that intended to receive the second liquid (50).
• the ite seal (37) is made, for example, of silicone.
• This seal (see FIG. 5) essentially comprises a flexible lip (38) which can only bend in one direction, to ensure: thus a temporary seal only if this lip (38) touches the internal wall (39).
• the piston moves in the direction indicated by the arrow -EV. ' under the effect of this displacement, the liquid contained in the second compartment (46) will press on the lip (38) (fi) and thus lower this lip, which will allow it to pass into the compartment (49).
• the lip (38) will on the contrary have a tendency to fold back and hang on the wall (39) thus forming a total seal.
• the stirring member (42), placed in the first compartment (45) (see FIGS. 3 and 4) is formed by a vertical flat disc (47), integral with the end of the axis (40).
• This disc (47) " is pierced with several holes (48), for example six holes regularly spaced.
• the axis of these holes is inclined relative to the plane of the disc (47).
• the seals (37-38) and (44) can be made of polytetrafluoroethylene (PTFE) or compatible synthetic rubber.
• the piston (34-35-36-37) and agitator (40-41-42) assembly is put in place. Filling the compartment (46) the desired amount and sets up the ring "stop (43) and the piston seal (44).
• the outlet nozzle (32) By means of the outlet nozzle (32), the compartment (45) is filled with the first liquid, then the plug (33) is screwed or placed. The syringe is thus ready for use.
• FIG. 6 shows a third embodiment of the invention.
• This syringe consists of a body (60) terminated at one end by a nozzle (61) closed by a cap (62) and on the other side by ear flaps
• a first piston (64) slides, one end of which has atria (65) inside this piston and coaxial with it, coulis ⁇ an axis (66) terminated by ear cups (67).
• O-rings (68) ensure the tightness due volume included between the piston (64) and the longitudinal axis (66) . . in a way to. define a chamber (69) forming a second compartment and therefore intended to receive the second liquid
• the end of this chamber (69) is terminated by an O-ring also (70).
• the agitator head (71) is integral with a disc (72) pierced with through holes (73) like the holes (48).
• the first part of the body (60) defines a first compartment (74). As noted, the volume of this first compartment (74) is significantly larger than that of the second compartment (69), which may be useful if the latter is intended simply to contain a catalyst.
• the double-compartment syringe conforming to the invention has many advantages compared with the solutions known to date. We can cite :
• this type of syringe can be successfully used for mixing any product with two components ⁇ requiring homogenization, in particular in a sterile environment.

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• Health & Medical Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Chemical & Material Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Veterinary Medicine (AREA)
• Public Health (AREA)
• General Health & Medical Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• Engineering & Computer Science (AREA)
• Anesthesiology (AREA)
• Hematology (AREA)
• Heart & Thoracic Surgery (AREA)
• Biomedical Technology (AREA)
• Vascular Medicine (AREA)
• Oral & Maxillofacial Surgery (AREA)
• Dentistry (AREA)
• Epidemiology (AREA)
• Mechanical Engineering (AREA)
• Infusion, Injection, And Reservoir Apparatuses (AREA)
• Medical Preparation Storing Or Oral Administration Devices (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=9275237

Family Applications (1)

Country Status (4)

Families Citing this family (14)

Family Cites Families (11)

• 1982
  • 1982-06-18 FR FR8210839A patent/FR2528706A1/fr active Pending
• 1983
  • 1983-06-16 WO PCT/FR1983/000121 patent/WO1984000011A1/fr not_active Application Discontinuation
  • 1983-06-16 EP EP83901928A patent/EP0112352A1/fr not_active Withdrawn
  • 1983-06-17 IT IT21675/83A patent/IT1194280B/it active

Non-Patent Citations (1)

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