Abstract: A dispensing device for a dental material comprises a cartridge having an outlet nozzle which forms a passageway for the dental material. The dispensing device further comprises a closure which is placeable on the outlet nozzle for sealing the cartridge. The closure comprises a pin for extending into the passageway, and is further adapted to seal with an outer surface of the outlet nozzle. The dispensing device is further adapted such that the pin is displaceable from the passageway by dental material dispensed from the cartridge, wherein the displacement causes the closure to release from the outlet nozzle. The invention may provide for relatively easy operation of the dental dispensing device.

Abstract: A container (10) for mixing and dispensing material comprising a body (12) having a main chamber (17), a dispensing nozzle (26), a liquid receptacle (14) and a plunger (18). The liquid receptacle (14) has a side wall (37) and a front wall portion (36) which is caused to break away from the side wall under pressure being applied by a plunger (18) so that the plunger and front wall portion can traverse the entire length of the body (12). This enables a charge of material in the main chamber (17) to be dispensed through a frangible wall or membrane (22) into the nozzle (26). The container 10 has a compression zone with a stepped region (50) for providing limited resistance to movement of the plunger and broken away end wall for use with low viscosity material for reducing the risk of uncontrolled extrusion of low viscosity material.

Abstract: A capsule for receiving and delivering high-viscosity dental materials has a housing which defines an interior chamber. The housing and the interior chamber have a first section, a transition area, and an exit nozzle. The interior chamber of the transition area tapers continuously towards its second end. The interior chamber of the transition area is defined by the outer surfaces of an oblique truncated cone with an opening angle of approximately 55°.

Abstract: A sulcus impression tip for injecting dental impression material for making dental impressions. The tip includes a body having a gripping portion and a discharge tip having a bore there through which permits a friction fit with the outside diameter of needle cannula. The needle cannula extends approximately 2 millimeters past a distal end of the discharge tip. The body further defines an angle for holding the gripping portion to permit the discharge tip and needle cannula to be positioned for easy access in the oral cavity by the dentist. The discharge tip is sized and shaped to separate the gum from the tooth in the selected region so that the needle cannula is positioned to permit exact positioning for placement of the dental impression material along the sulcus.

Abstract: A syringe for dispensing a multi-component material. The syringe can include a cartridge having a first end and a second end, and respective compartments for components of the multi-component material; a static mixer connected to the first end of the cartridge, the mixer having a dispensing outlet; and a plunger assembly that is movable into the syringe cartridge at the second end to dispense material from the first end. A connection between the static mixer and the first end of the syringe cartridge includes a flow-directing mechanism having a venting position in which the cartridge compartments are cut off from the static mixer and are in communication independently with respective venting outlets, and a dispensing position in which the cartridge compartments are in communication with the static mixer and are cut off from the venting outlets.

Abstract: A container 10 for mixing and dispensing of material having a liquid receptacle 14 and a plunger 18. The receptacle 14 has a front portion 36 and the plunger 18 has a forwardly projecting sharp protrusion 42 having a shaft 72 which terminates in a sharp outer end 78, 82. Upon the plunger 18 being depressed the sharp protrusion 42 pierces a front portion 36 of the liquid receptacle 14 and liquid in the receptacle 14 is pushed hydraulically through the front portion 36 into a main chamber 17. Thus the liquid contacts material in the main chamber 17 to form a mixture. The plunger 18 can continue to be depressed so as to break the front portion 36 of the liquid receptacle 14 away and then push the material in the main chamber 17 towards a dispensing nozzle 26. The main chamber 17 has a frangible membrane 22 at a distal end 13 thereof which is hydraulically broken by pressure applied from the material in the main chamber 17 so that the material can be dispensed from the container 10.

Abstract: A syringe (1) for dosed dispensing of material, in particular of free-flowing and/or pasty dental material, includes a sleeve (10) for accommodating material and a piston (15) which can be inserted into the sleeve (10) and which has a piston member (15?), a frictional engagement element (25) which abuts an inner wall (35) of the sleeve (10), and an elastic element (30) coupling the frictional engagement element (25) and the piston 10 member (15?), wherein the sleeve (10) and the piston (15) inserted into the sleeve define an inner sleeve chamber (70) for accommodating the material, wherein the elastic element (30) can be tensioned, on insertion of the piston (15) and/or of the piston member (15?) into the sleeve (10), by means of a relative lag of the frictional engagement element (25) in relation to the piston member (15?), 15 wherein by relaxing the elastic element (30) it is possible for the piston member (15?) to be expelled at least partially from the sleeve (10) while the frictional engagement element (

Abstract: A motorized syringe for use with two types of dental anesthetic solution-filled cartridges, having a plunger plug in the 1.8 ml cartridge pushed by a push rod by a length required to push a plunger plug in the 1.0 ml cartridge. The syringe includes a cartridge holder for use with 1.0 ml and 1.8 ml cartridges, the push rod having a 1.0 ml position and a 1.8 ml position drawn back from the 1.0 ml position so that push rod movement can end at a common terminal position for both, a sleeve adapted to receive the push rod rear end when pushed back from the common terminal position, and to be not interfered with by the push rod's rear end when it is in the 1.0 ml position, the sleeve being pushed rearward with the push rod's rear end when pushed back to the 1.8 ml position.

Abstract: A needleless injector syringe includes a tubular barrel containing a first chamber for receiving a liquid, a nozzle on a front end of the barrel, a piston which drives a plunger for discharging the liquid through the nozzle, a second chamber in which the piston slides, a third chamber in fluid communication with the second chamber for receiving gas from said second chamber during forward movement of the piston, and for carrying gas to the second chamber to cause the piston to retract, and a breach plug closing a rear end of the barrel for directing gas under pressure alternately against the rear end of the piston and to the third chamber for driving the piston between the discharge position and a retracted position.

Abstract: Provided is an anesthetic solution-filled cartridge-type electric dental syringe, wherein the plunger has been shortened but the plunger can nevertheless be extended to the distance necessary to evacuate the anesthetic solution from the cartridge. The syringe comprises: an extension tube (11) into which a plunger (5) is movably inserted, the extension tube being movably disposed in the through hole (14) of a support block (13) and having racks (15, 15) formed in the side surface thereof that are coordinated with the racks (9) of the plunger; and a means for the plunger to draw the extension tube to engage the racks (15, 15) of the extension tube with a pinion (21) when the plunger reaches the middle of the distance corresponding to the anesthetic solution accommodation length of the cartridge.

Abstract: A material capsule containing a reactive or caustic dental material and a separately attachable delivery tip having a metal cannula. A material capsule for placement in a syringe contains a reactive or caustic dental material for dispensing through a metal cannula. The material capsule is sealed for storing the caustic or reactive dental material, preventing prolonged contact with or proximity to the metal cannula of a delivery tip. Contact with the reactive or caustic dental material only occurs during actual dispensing. Transition portions facilitate dispensing of viscous material. External grips facilitate attachment of the delivery tip. The dispensing and accurate placement of caustic or reactive dental materials is facilitated, making dentistry easier.

Abstract: A rinsing instrument (1) including a vibration part (30) and a spraying part (20) which can be coupled to each other. The spraying part includes a hollow cylindrical body (21) with an input end (23) and a narrow needle (25); an axially displaceable piston (22) arranged in the interior of the body, which at its free side directed away from the spraying mouth is provided with a coupling member (27) for coupling to the vibration part, for instance a threading. The vibration part includes a housing (31) which at an end is provided with a coupling member (32) for coupling to the spraying part, for instance a threading; a vibration generator (34) mounted in the housing, for instance a motor; a battery chamber (39) for receiving a battery (35) providing electrical supply to the vibration generator; a user-controllable switch (36) mounted in the housing for actuating the vibration generator.

Abstract: A device for dispensing a dental composition is provided. The device has a plunger for extruding dental composition from a container, an energy accumulator for advancing the plunger, and an actuator for charging the energy accumulator. The force for actuating the actuator is lower than the force at which the plunger can be advanced. The device preferably provides convenient dispensation of dental compositions.

Abstract: Cartridge systems for application of a material have at least one cartridge having cartridge walls, a cartridge head having at least one opening in the cartridge head, and a bracket arranged on the cartridge head. A valve is mounted in rotatable manner in the bracket and has at least one passage through the valve that is connected to an outlet opening of the valve. In a closed position, the valve closes the at least one opening of at least one cartridge in a sealed manner. The at least one passage of the valve is connected to the at least one opening when the valve is located in an open position such that the cartridge content is squeezable out of the at least one cartridge through the outlet opening, and further wherein the valve is configured to be transitioned from a closed position to an open position through a rotation of the valve about an axis of symmetry of the valve.

Abstract: The device includes a shim component constructed for use in the non-surgical treatment of interproximal carious dental lesions. A plunger may be provided for driving substances through a tube-like channel or bore in the shim component, or an electromagnetic energy-transmissive material may fill the channel, in either case for delivering to the site of the lesion a medium that is effective for directly or indirectly killing, or biologically damaging, the carious bacteria.

Abstract: A container (10) for mixing components, the container including a main body (12) defining a main chamber (17), a liquid receptacle (16), and a plunger (18). The main chamber has a distal end (26) which has an end cap (28). The main chamber also includes a central aperture (30) sealed by a frangible membrane (38). In use, the plunger causes liquid in the liquid receptacle to be pushed through an internal wall (22), having a weakened portion (24) therein, into the main chamber to mix the liquid with a powder contained in the main chamber. The liquid and powder are mixed to form a paste that is accessed by an applicator which is used to break the frangible membrane (38). The paste is preferably of the type used in dentistry.

Abstract: A linear cartridge-type motorized dental syringe has a plunger rod aligned with a drive shaft of a motor, the externally threaded plunger rod movable longitudinally, but not rotatably, relative to the casing, a cylindrical body rotated by the shaft, a nut having arm-like nut halves with internal threads engaging external threads on the rod, a locking ring for rotation around an axis of the rod and for longitudinal movement between a rearward position where the ring forces the threads on the nut halves to engage the threads on the rod, and forward where the ring releases engagement of the threads, pusher pins for moving the ring rearward when the cartridge holder is inserted, and a spring for pushing the locking ring back to the forward position, with rotation of the cylinder body resulting in rotative motion of the nut around the rod to move it forward.

Abstract: A dental package and a method of making such dental package for holding flowable dental material. The method comprising the steps of providing a container having an opening and providing first portion of a flowable dental material in the container. Further the method comprises hardening a predetermined second portion of the flowable dental material to form a closure that closes the opening. The invention provides for improved manufacturing and for facilitating the use of the package.

Abstract: This disclosure is directed, inter alia, a method of making a dispensing device for dispensing a substance comprising a step of providing a mold having a mold space for receiving a solidifyable material. The method further comprises steps of providing a valve member having a first portion formed between first and second areas of an outer surface of the valve member; placing the valve member into the mold space such that at the first area is isolated from the mold space and at least part of the second area is within the mold space; displacing the first portion at least partially relative to another portion of the valve member; and solidifying the material in the mold space and thereby fixing the displaced first portion in place. In one embodiment, the method helps minimizing manufacturing costs and maximizing shelf life of a device filled with substance.

Abstract: A decorative cut-out is provided for application to a dental device. The decorative cut-out includes a decorative design that incorporates a structural feature of the dental device to portray an object selected to alleviate an anxiety of a patient.

Abstract: A dispensing container for dental compound, wherein said dispensing container comprises a housing, on the inside of which a slide surface is formed that is intended for engagement with a plunger. The housing encloses an interior and is provided with an outlet channel. A portion of a needle is inserted into the outlet channel. A gap is present between the circumference of the needle and the outlet channel. An adhesive is introduced into the gap. A method also produces a dispensing container of this kind.

Abstract: A dental paste dispensing device having a modified dispensing end for atraumatic contact with soft tissue is disclosed. The dispensing device includes a needle having a dispensing end with a terminal edge for dispensing the dental paste to a location in a patient mouth containing soft tissue, wherein the dispensing end includes an atraumatic modification. The modification comprises one of a non-metal coating on an outer surface of the dispensing end, a plastic tip member over the dispensing end, or a decreasing diameter at the terminal edge from a first point on the outer surface to a distal-most point of the outer surface.

Abstract: An improved safety needle cap for disposable needles used on dental syringes, or on syringes of similar design, that may be removed and replaced without risk of a needle stick injury. This is accomplished by fitting a needle cap to the needle hub so that it can slide down over the syringe body and lock in place while in use. The cap will then slide back over the needle and lock in place, covering the needle cannula while not in use. In this way the user's digits are continuously below the needle, decreasing the chance for puncture. The device will use a single cap that will cover both cannulas of a double sided needle, rather than the dual cap system commonly used.

Abstract: The present invention includes an improved dental mixing device with a barrel, a mixing tip, and a plunger. The plunger moves dental material through the barrel where it is mixed using a mixing tip. The mixing tip includes an auto-aligning fitting female element configured to align with an auto-aligning fitting male element of the barrel. This auto-alignment simplifies the attachment between the mixing tip and the barrel, saving the user the time and effort. The mixing tip also includes a seal component with a soft material (or component) to insert into the auto-aligning fitting element which is a hard material (or component) to achieve an ideal seal. The seal component and auto-alignment fitting element can be combined together into one component instead of two components.

Abstract: A medicament dispensing device including a substantially rigid carpule body which has a dispensing end and an actuation end opposite the dispensing end. The carpule body is substantially tubular and thus defines a carpule bore. The device further includes a plunger operatively disposed within the carpule bore having a plunger actuator near the actuation end of the carpule body and a plunger tip opposite the plunger actuator. The plunger tip and an orifice at the dispensing end of the carpule bore define a medicament volume which may be loaded with a medicament selected to achieve specific therapeutic goals. The carpule body may also include a wound depth scale. The depth scale is typically associated with the dispensing end of the carpule body. Similarly, the medicament dispensing device may include a dosage scale. Also disclosed are methods of dispensing medicaments.

Abstract: The present invention is designed to prevent or reduce anxiety in child or adolescent patients undergoing dental or medical procedures through a design to conceal or hide elements of a traditional syringe. The use of an opaque sleeve or exterior surface shaped in a manner other than a tube is used to conceal the interior of the syringe barrel, mask the plunger, and partially obstruct the view of the cannula assembly.

Abstract: A vented piston (1) comprises a plunger (2) having a front side and a rear side, a venting passage (4) extending between the front side and the rear side, and a cap (7) located adjacent the front side. The cap is resiliently-biased by a spring (8) towards an open position in which air can pass through the venting passage from the front to the rear side of the plunger, and is movable from the open position into a closed position in which the cap closes the venting passage. The piston may be used in a storage chamber (10) of a dispensing system whereby air can be removed from the storage chamber by moving the plunger in the direction of a substance (12) stored in the chamber.

Abstract: A hollow syringe barrel for use in syringe mixing systems for mixing a two-component composition. A hollow body of the syringe barrel includes a proximal end, a distal end, and continuous cylindrical wall defining an internal chamber for containing a first component. A rupturable membrane disposed at the distal end caps and seals off a single dispensing orifice. A second syringe barrel can be coupled to the distal end of the hollow syringe barrel to form a syringe-to-syringe mixing system. First and second plungers disposed within the hollow syringe barrel and second syringe barrel, respectively, are used to mix and cycle back and forth first and second components initially contained within the hollow syringe barrel and second syringe barrel. The two components are initially separated by the rupturable membrane, which is irreversibly ruptured by applying sufficient pressure to the first plunger within the hollow syringe barrel prior to mixing.

Abstract: A therapeutic gum irrigator is provided for subgingival periodontal irrigation with a chemotherapeutic fluid. The irrigator includes a housing surrounding at least a portion of the irrigator, a reservoir connected to the housing to retain the fluid, and a cannula configured for subgingival periodontic insertion in fluid communication with the reservoir. The irrigator further includes a neck connected to the housing and separating the reservoir from the cannula. A pump in fluid communication with the reservoir and the cannula includes a displacing element movable between first and second positions and a biasing element that biases the displacing element to the first position. A lever connected to the housing can mechanically move the displacing element to the second position, expelling a predefined volume of the fluid through the cannula. The biasing element causes the displacing element to return to the first position upon release of the thumb lever by the user.

Abstract: This invention relates to a method for mixing a first injectable liquid pharmaceutical composition and a second injectable composition within an injection device, said injection device including: ·a generally cylindrical shell in which a cartridge is lodged or a generally cylindrical barrel, ·at one first end of the generally cylindrical barrel or the generally cylindrical shell, a plunger, the plunger being mounted on the barrel or shell, ·at a second end opposite the first end of the generally cylindrical barrel or the generally cylindrical shell, is provided a needle assembly support member, on which may be mounted a needle assembly, said needle assembly comprising means to be mounted on the needle support member, and further comprising: -at least one hollow cannula for transportation of liquid from the barrel or cartridge to the body of the patient; -and at least one hub surrounding part of the cannula and attached to cannula; said hub possibly including a hollow part; characterized in that the first inje

Abstract: Provided is a capsule for storing and dispensing dental material. The capsule comprises a cartridge for the dental material, and a nozzle. The nozzle being pivotable with respect to the cartridge between a first position in which the capsule is closed for storage and a second position in which the capsule is opened for dispensing the dental material. One of the nozzle and the cartridge comprises a bearing member and the other one of the nozzle and the cartridge comprises a bearing shell, wherein the bearing member and bearing shell form a pivot. Upon pivoting the nozzle from the first to the second position, the seal between the bearing member and the bearing shell is improved.

Abstract: The invention described herein provides for a simple, economical system and method for reducing environmental release of dental amalgamous mercury from teeth caused by cremation of corpses. The invention controls and reduces the amount of mercury released using a pre-crematorial and non-disfiguring system and method. The system of the invention can include a dental containment and applicator delivery system to apply a curable thermal protectant composition onto the teeth. The composition coating significantly inhibits the extent of thermal destruction of the tooth per se including its amalgam filling content.

Abstract: A syringe for dosed dispensing of material, in particular of free-flowing and/or pasty dental material, includes a sleeve for accommodating material and a piston inserted into the sleeve defining an inner sleeve chamber and which has a piston member, a frictional engagement element which abuts an inner wall of the sleeve, and an elastic element coupling the frictional engagement element and the piston member, wherein the elastic element can be tensioned, on insertion of the piston and/or of the piston member into the sleeve, by means of a relative lag of the frictional engagement element in relation to the piston member, wherein by relaxing the elastic element it is possible for the piston member to be expelled at least partially from the sleeve while the frictional engagement element remains motionless, to increase the volume of the inner sleeve chamber.

Abstract: The present invention relates to an injector for dental implants, comprising: a main body which is formed into an annular tube, the entirety of which is formed so as to have a gentle curvature, and the center of which has a through-hole; and a piston inserted into the through-hole of the main body so as to press the contents in the main body, wherein the piston is made of a flexible material which can be elastically transformed, and a packing is coupled to the leading end of the piston. The main body and the piston of the injector for dental implants according to the present invention have gentle curvatures, and therefore the leading end of the injector can be accurately positioned at a hole formed in the bone of a patient, and the contents in the injector can be easily injected into the hole formed in the bone without leaking to the outside.

Abstract: The device includes a shim component constructed for use in the non-surgical treatment of interproximal carious dental lesions. A plunger may be provided for driving substances through a tube-like channel or bore in the shim component, or an electromagnetic energy-transmissive material may fill the channel, in either case for delivering to the site of the lesion a medium that is effective for directly or indirectly killing, or biologically damaging, the carious bacteria.

Abstract: Disclosed herein are a tissue management impression material and a method of application into the sulcus of a patient, whereby the tissue management impression material is a part of the final dental impression made when manufacturing a dental device, such as a crown.

Abstract: A dental syringe including a hollow piston having threads on the inner wall thereof, and an exterior threaded rod disposable within the hollow piston and upon rotation of the rod moving the piston longitudinally for dispensing dental material from the syringe.

Abstract: A capsule for storing and dispensing dental material. The capsule comprises a cartridge for the dental material, and a nozzle. The nozzle being pivotable with respect to the cartridge between a first position in which the capsule is closed for storage and a second position in which the capsule is opened for dispensing the dental material. One of the nozzle and the cartridge comprises a bearing member and the other one of the nozzle and the cartridge comprises a bearing shell, wherein the bearing member and bearing shell form a pivot. Upon pivoting the nozzle from the first to the second position, the seal between the bearing member and the bearing shell is improved.

Abstract: A method of dispensing a hardenable dental composition comprising 1) providing a two-part hardenable dental composition, and 2) extruding the composition through a static mixer in fluid communication with a first reservoir containing the first part and a second reservoir containing the second part, wherein a plunger is positioned in each reservoir for simultaneously forcing both parts into the static mixer, extruding the composition through the static mixer, and dispensing the composition, and wherein an extrusion force is applied to the plunger for extruding the composition through the static mixer without the aid of a mechanical advantage provided by an attached or external device. Also disclosed is a method of bonding a prosthetic device to a dental structure using the dispensing method, a device for dispensing the composition using the dispensing method, a kit comprising the device, and the composition used in the dispensing method.

Abstract: A container (10) for mixing and dispensing material comprises a body (12) having a main chamber (17), a dispensing nozzle (26), a liquid receptacle (16) and a plunger (18). The liquid receptacle (16) has a front portion arranged to break away upon hydraulic pressure being applied by the plunger (18) so that the plunger (18) can traverse the entire length of the body (12). This enables a charge of material in the main chamber (17) to be entirely dispensed through a frangible wall (22) into the nozzle (26). The container (10) has a compression zone with a stepped region (50) to provide limited resistance to movement for use with low viscosity material. This reduces the risk of uncontrolled extrusion of the low viscosity material.

Abstract: A mixing and application capsule for producing a dental preparation is described. The mixing and application capsule can have a capsule body with a mixing space for receiving a mixture component and for mixing the dental preparation from the mixture component and a fluid and with an outlet orifice for expelling the dental preparation, a cavity for receiving the fluid, a piston body that is movable in the capsule body, and delimits the mixing space in the capsule body and has a channel for conveying the fluid from the cavity into the mixing space.

Abstract: A material capsule containing a reactive or caustic dental material and a separately attachable delivery tip having a metal cannula. A material capsule for placement in a syringe contains a reactive or caustic dental material for dispensing through a metal cannula. The material capsule is sealed for storing the caustic or reactive dental material, preventing prolonged contact with or proximity to the metal cannula of a delivery tip. Contact with the reactive or caustic dental material only occurs during actual dispensing. Transition portions facilitate dispensing of viscous material. External grips facilitate attachment of the delivery tip. The dispensing and accurate placement of caustic or reactive dental materials is facilitated, making dentistry easier.

Abstract: The abstract has been amended as follows: A method of dispensing a hardenable dental composition, which can form a temporary bond, comprising 1) providing multi-part hardenable dental composition comprising part (A) in the form of a paste comprising acid-reactive glass particles and a liquid selected from the group consisting of water, a monomer having at least one ethylenically 10 unsaturated group per monomer molecule, and a combination thereof; and part (B) comprising a water soluble polyacid and a liquid selected from the group consisting of water, a monomer having at least one ethylenically unsaturated group per monomer molecule, and a combination thereof; and 2) extruding the composition through a static mixer in fluid communication with a first reservoir containing the part (A) and a second reservoir 20 containing the part (B); wherein a plunger is positioned in each reservoir for simultaneously forcing part (A) and part (B) into the static mixer.

Abstract: A syringe assembly for dispensing medicine from a cartridge having a diaphragm and a piston opposite the diaphragm. The assembly includes a barrel having a hollow interior, an open proximal end, a closed distal end, and an outlet. The assembly also includes a cartridge receiver slidably receivable in the hollow interior of the barrel. The receiver includes an interior space for receiving the cartridge, an access needle extending into the interior space for puncturing the diaphragm of the cartridge. The access needle directs fluid to the barrel outlet. The cartridge receiver includes a plunger rod movable into the interior space of the cartridge receiver for engaging the piston of the cartridge to selectively force medicine in the cartridge through the access needle.

Abstract: Screw syringe comprising a piston spindle with an external thread, a syringe barrel, comprising a sleeve with a piston end, and a female part with an internal thread. The female part slides in a radial sliding direction onto the piston end. The female part has a flange that creates a form fit with a counter-surface at the piston end so axial displacement of the female part in relation to the syringe barrel in the discharge direction is prevented. The female part has retaining surfaces, which create a form fit with counter-retaining surfaces of the piston end so that an axial displacement of the female part in relation to the syringe barrel counter to the discharge direction is prevented. The retaining surfaces and counter-retaining surfaces create a form fit so that a radial relative movement between the retaining surfaces and the counter-retaining surfaces, directed perpendicularly to the sliding direction, is prevented.

Abstract: A plunger for advancing a substance in a syringe toward a dispensing nozzle. The plunger has a plunger rod and a seal and being formed of a plastic composition. The plastic composition comprises a polymer and a filler which is non-uniformly distributed within the polymer to provide the plunger rod and the seal with different mechanical properties depending on the filler content in the portions of the plastic composition plunger forming the rod and the seal. The invention preferably provides a dental syringe which can be conveniently used, and further helps minimizing costs in the manufacturing of the dental syringe.

Abstract: A high volume carpule system for storing and dispensing a high volume of anesthetic to a patient. A preferred embodiment of the high volume carpule system generally includes a syringe having a modified carpule cavity comprised of an upper ring member and a lower ring member which are linked together by a first side member and a second side member. The side members are oriented in such a manner as to allow a pair of slots through which side portions of a high capacity carpule may extend. A high capacity carpule comprised of a substantially cylindrical shape with an elongated cross-section is disclosed for use with the modified carpule cavity. In an alternate embodiment, a second high capacity carpule design is disclosed for use with conventional, prior art syringes. By using the present invention, a dentist or surgeon may administer a higher volume of anesthetic without having to switch carpules within a syringe.

Abstract: A device for achieving high vacuum stability during phacoemulsification surgery includes a main aspiration line connected to a vacuum source which enables a fluid flow from a phacoemulsification handpiece tip to a drainage reservoir. A first tubing segment is provided in the main aspiration line along with a second tubing segment generally parallel to the first tubing section and a valve disposed in the second tubing segment regulates fluid flow through the second tubing segment in order to limit vacuum surge in the main aspiration line upon clearing of an occlusion in the phacoemulsification handpiece tip.

Abstract: An applicator for a one-handed operation for storing and applying a dental liquid, including a container for the dental liquid and a tubing for guiding the dental liquid from the container to an applicator tip. The container is made of foil, which can be punctured by a mandrel. The dental liquid is expelled through a displacement plunger, whereby puncturing and expelling are effected through actuating a handle and the container is positioned with respect to the mandrel in suitable manner such that the advancing mechanism that is used to expel the dental liquid from the applicator is also used to puncture or slit open the foil with the mandrel, whereby the container is opened through the same force that is used to dispense the dental liquid and one-handed operability of the applicator is attained not only when the dental liquid is dispensed, but also when the container is being opened.

Abstract: A dispensing device comprises a compartment for receiving a dental material, a piston for extruding the material from the compartment and a spindle drive for moving the piston and the compartment relative to one another. The spindle drive comprises a spindle and a link which are adapted for disengageable engagement with one another, wherein the spindle and the link are operable relative to each other between an engaged position in which the link and the spindle are engaged with one another, and a disengaged position in which the spindle and the link are disengaged from one another. The device may be relatively robust and inexpensive to manufacture, and may facilitate preparation of dental materials for use.