359results about "Amalgam presses/mixers" patented technology

A dental bleach storage, mixing and delivery device and related method are disclosed. The device includes a barrel with at least two chambers. The chambers store components that when mixed can form a dental bleach or whitener. A plunger is provided that can be reciprocated within the barrel to force such components from their chambers. A mixing tip is provided for the end of the barrel. The components may be forced through the mixing tip which thoroughly mixes them together. The resulting bleach or whitener is applied to a patient's teeth where oxygen ions released from the bleach or whitener and will whiten the patient's teeth.

Methods, apparatus, devices and systems for mixing and dispensing multi-component materials. The mixing and dispensing may be performed using a mobile, enclosed dispenser that can be used to supply a mixed multi-component material at the point of use. In some embodiments, the components to be mixed into the multi-component material may be supplied in cartridges.

A process of whitening a tooth provided by the invention includes the steps of providing a delivery device for mechanical dispensing of a predetermined amount of a whitening composition to an applicator tip; dispensing the amount of whitening composition to the applicator tip; applying the amount of whitening composition disposed on the applicator tip to the tooth to be whitened; and allowing the whitening composition to remain in contact with the tooth for a period of time sufficient to whiten the tooth. Optionally, the process further includes the step of exposing the whitening composition to light. A gum or candy for tooth bleaching is detailed along with methods of use. A device adapted to dispense an amount of a dental whitening composition optionally includes a light source for activating the whitener.

The invention is directed to a piston or plunger (1) for a material delivery system (10) and a delivery system (10), such as a cartridge delivery system or syringe for storage and dispensing of a viscous or pasty material, in which the system includes a piston or plunger (1). The piston or plunger (1) is preferably provided for a unit dose dental capsule for the direct placement of a dental material, such as a light-curable tooth filling material, into a desired location.

An application tip (100) for a viscous or pasty composition comprises a body (101) including a proximal end (102) that can be fastened onto a device for dispensing said composition and a distal end (103) that is provided with an outlet orifice (104), an internal duct (110) extending between the proximal and distal ends of said body. The internal duct (110) comprises at least one portion (112) of flat shape opening out at the outlet orifice (104) and including adjacent grooves (113) in at least one of its sides.

Apparatus and methods for mixing and dispensing components. The methods and apparatus of the invention are particularly advantageous to mix the components of radiopaque bone cement and inject the resulting radiopaque bone cement into skeletal structures. The apparatus of the invention comprises: (1) a sealed mixing chamber for mixing components; (2) a dispensing chamber isolated from the sealed mixing chamber; (3) a controllable portal to open a flow path between the sealed mixing chamber and the dispensing chamber so that the dispensing chamber can receive the mixed components after they are mixed; and (4) a drive mechanism associated with the dispensing chamber to force the mixed contents from the dispensing chamber.

A double syringe delivery system is disclosed for holding a pair of syringes in a manner so as to accommodate the simultaneous activation of the plunger of each syringe in order to effect simultaneous delivery of the contents of each syringe. The delivery system includes a delivery mechanism for delivering the contents of both syringes to a site of application. The delivery system further includes a support member that is positioned between the two syringe bodies. The elongated support member has resilient, C-shaped clamps on one end of the support member. The clamps are designed to be removably clamped onto the applicator so that the syringe barrels will be held together in a parallel manner. The elongated support member further comprises finger grips. A plunger connects the two syringe plungers so that they can also be simultaneously activated.

A mixer includes a mixer housing provided with two annular skirts respectively extending downward to form a receiving space for communicating with an interior of the tubular housing, a mixer element having a helix extending into the tubular housing, and a mixer inlet portion with a connection plate having two top openings selectively communicating with the two openings such that components received inside the two tubes are able to be selectively forced into the interior of the tubular housing for dispensing.

A dispensing syringe for dispensing a multi-component dental composition, preferably a two component composition, is provided. The syringe includes a syringe body with multiple elongated barrels for storing the components of the composition; a threaded plunger rod assembly; and a rotatable, threaded connector knob. Preferably, the syringe body has a double-barrel structure and the plunger rod assembly includes two plunger rods that slide within the barrels. The threaded knob has a through-bore with a continuous internal thread for engaging the outer threads of the first and second plunger rods. A dental practitioner manually rotates the knob to displace the first and second plunger rods and discharge the components. The dispensing syringe may further include a dispensing tip containing a static mixing element for mixing the components and dispensing the mixed composition.

A dental tooth whitening material sets to a rubber-like or elastomeric yet fluid consistency. The material includes hydrogen peroxide. A method of whitening teeth employs such a material by placing it into a dental tray or by placing the material directly onto a tooth. Once the material has set to its solid or semi-solid yet fluid consistency, the dental tray, if employed, can be left in place or removed.

This invention is about squeezing gun for two-part medical viscous fluid that squeezes two different kinds of medical viscous fluid simultaneously that are contained in double cartridge where two tubes are combined in one body and when explained in more detail, this invention is to squeeze simultaneously two kinds of medical viscous fluid that are contained in double cartridge while two horizontal scroll bars are moving horizontally as driving power of driving motor is being reduced when push button of squeezing gun which has the shape of pistol is pressed.

The present invention relates to a unit-dose syringe comprising a static mixer for storage, mixing, and application of a multi-component material, preferably dental material. There is provided a unit-dose syringe for a multi-component material comprising a cartridge having a compartment for each component, a static mixer, a mixing tip being integrally connected to the cartridge at the front end of the cartridge, and receiving the static mixer, and a plunger for each compartment of the cartridge, the static mixer comprising closure plugs at is rear end for closing the outlet ends of the compartments. Furthermore, a unit-dose syringe for a multi-component material alternatively comprises a cartridge having a compartment for each component and an integrally formed static mixer, a plunger for each compartment of the cartridge, and a mixing tip connectable to the cartridge and for receiving the static mixer.

A dental apparatus is disclosed. The dental apparatus can comprise a pressure wave generator to be disposed at a treatment region of a tooth. The pressure wave generator can include an opening to deliver a flowable filling material to the treatment region. The apparatus can include a reservoir for supplying the filling material to the pressure wave generator. The pressure wave generator can be configured to generate pressure waves through the treatment region to cause the filling material to substantially fill the treatment region.

A dose package for applying a material with an applicator having a separate material and applicator portion. In one embodiment, a portion of a cover is removable, exposing the material and applicator. In another embodiment, a plurality of material wells are used to mix different materials to be dispensed with an applicator. In another embodiment, a material well is squeezed to dispense the material onto an applicator.

Novel hand-held single or two-component viscous fluid material dispensing gun, particularly though not exclusively useful for dental use and the like, and using in-line longitudinal drive racks and fluid cartridge containers, the racks being driven longitudinally along a barrel by an electric motor that is preferably mounted and controlled in the handle transversely depending below the barrel.

A dental filling material comprising a thermoplastic polymer. The thermoplastic polymer may be biodegradable. A bioactive substance may also be included in the filling material. The thermoplastic polymer acts as a matrix for the bioactive substance. The composition may include other polymeric resins, fillers, plasticizers and other additives typically used in dental materials. The filling material is used for the filing of root canals.

A dental syringe (10) has a needle (11) affixed to a carpule holder (12), which carpule holder (12) is affixed to a power drive unit (13). A harpoon (20) is provided to affix the drive unit to the carpule plunger (32). The harpoon (20) is made of stainless steel or other hard, corrosion resistant, sterilizable, material. Harpoon 20 has a unique barb geometry and hardened, knife-like, edges (21). The syringe (10) may operate to divide the delivery of anesthesia into two phases. According to the method, during the first about 10 seconds of the injection, anesthetic is delivered at an extremely slow rate to maximize patient comfort. The injection rate then automatically increases to the preprogrammed rate associated with the injection type selected.