Centrix Inc.

Other

John J Discko, Jr

William B Dragan

A tray having wells or depressions therein for holding a medicament or material and an applicator for applying the medicament or material. The applicator well has one open end from which a portion of the applicator extends. A cover seals the medicament or material well and the applicator well and a portion of the applicator. In one embodiment, the cover is a thin sheet or film that adheres or is heat sealed to substantially the entire surface of the tray. The portion of the applicator extending beyond the applicator well is used to facilitate the removal of the cover whereby the extended portion of the applicator acts as a lever to pry the cover form the body of the tray. Additionally, packaging material required to form the tray can be substantially lessened in those cases where the applicator that is relatively large in comparison with the amount of material to be packaged. Therefore, a larger applicator that is easy to use is associated with the material without unnecessary packaging. The dispenser or package permits small quantities of material to be easily dispensed for a single use or a single patient dose. Retaining means are provided for securing the applicator by friction fit within the applicator well. In another embodiment, a hinged cover is used in combination with a tray having multiple material wells which may be jointed or separately opened and closed.

Single patient dose medicament dispenser with applicator

Package having a material well and applicator

This disclosure relates to an anhydrous dental etchant composition that includes a mixture of phosphoric acid or an equivalent and anhydrous glycerin having a final acid concentration in the range of 10% to 40%, and having a trace of a color indicator therein; and a unit package and dispenser for the anhydrous dental etch that includes an applicator and a predetermined amount of anhydrous etchant which is self contained for single patient application and which can be readily disposed of after use.

Dental etch and package therefor

This invention is directed to a micro aspirator for use in performing microsurgery for the removal of blood, debris and fluids from around the micro surgical site. The micro aspirator includes an elongated flexible tube which is preferably transparent, which is adapted to be connected to a negative pressure source and an aspirating tip formed as a plastic hub having a connected needle or cannula with a gauge ranging between 10 to 30 connected to the end of the flexible tube. The plastic hub may be either detachably or fixedly secured to the end of the flexible tube, with the needle or cannula being formed of a readily bendable material that can be easily bent by the operator or surgeon to any desired angle.

Micro aspirator

A manual dental extruder or syringe gun having a front end with rigid side walls and an opening therein adapted to receive a dental cartridge, capsule, ampule or tip having a flange. The body portion of the cartridge has a diameter less than that of the lateral width of the opening in the rigid side walls so that the dental cartridge can easily be dropped therein. At one end of the cartridge opening is a flange retainer. After dropping the dental cartridge in the front end, the cartridge is slid forward into the flange retainer. A portion of the rigid side walls extend over the flange when the dental cartridge is in position to be extruded. The rigid side walls improve the durability and strength of the dental extruder and prevents the dental cartridge from being pushed through the end of the extruder due to the large longitudinal forces required to extrude viscous dental materials.

Dental cartridge extruder with rigid drop-in front end

Needle tube dental syringe tip

Dental syringe gun

Combined dental syringe tip and a sealing cap

A disposable capsule for dispensing a dental material and a method of making the capsule wherein the capsule includes a reservoir portion containing a predetermined amount of material to be dispensed, and which reservoir is connected in communication with a discharge tip. Connected to the end of the tip and projecting therethrough is a needle cannula through which the material is ejected. A displaceable piston may be provided when material is desired to be sealed within the reservoir portion, and which forces the material through the cannula when displaced within the reservoir portion. The method of forming such capsule includes the step of flaring one end of the cannula radially outwardly and inserting the cannula with the flared end trailing into the reservoir and through the discharge tip. A force is then applied to the cannula to force the flared end to be imbedded into the material of the capsule adjacent the end of the discharge tip. The method insures the cannula connection within the tip end so as to permit the cannula to be rotatably mounted relative to the tip while maintaining a seal between the tip and the cannula.

Syringe and disposable capsule and method of forming capsule with cannula

A disposable barrel dental impression syringe having a rotatable malleable needle cannula. A disposable barrel is fitted with a malleable needle cannula that is seated to permit easy rotation thereof. A handle is threaded onto the open end of the barrel. A plunger is fitted through the handle and barrel forming a syringe for the extrusion of dental impression material. The needle cannula is positioned within the discharge end of the barrel in such a way to permit easy rotation, yet prevent pushing or pulling the needle cannula through the discharge end of the barrel. This permits exact positioning of the needle cannula for placement of dental impression material. Additionally, only the barrel portion of the syringe being disposable, the precision and feel of a high quality impression syringe is maintained.

Disposable barrel dental impression material syringe

A dental syringe and disposable capsule for use therewith wherein the disposable capsule includes a body portion formed with a laterally extending collar having a groove therein connected to one end and having a discharge nozzle connected at the other end of the capsule body portion. A displaceable plug seals the material within the cartridge. The syringe includes a plastic barrel having a bore extending therethrough for receiving a reciprocating plunger slidably supported therein. Connected to the barrel adjacent one end is a handle extending normal thereto with a lever pivotally connected relative thereto for engaging the end of the plunger for effecting the displacement of the plunger when the lever is actuated. Connected to the front end of the plastic barrel is a cartridge holder formed as a metal part having a rear portion and a forwardly extending seat portion. The rear portion is embedded into the material of the plastic barrel with the seat portion extending forwardly of the front end of the barrel. The seat portion is defined by an inturned flange spaced forwardly of the front end of the barrel which is notched to define a U-shaped opening. The upper end of the opening is provided with a width sized to the diameter of the groove formed in the collar of the capsule whereby the cartridge is removably retained within the cartridge seat in a simple and expedient manner by placing the collar groove in the notch defined by the inturned flange of the cartridge seat.

Dental syringe and cartridge therefor

A dental cartridge for dispensing a dental material having a body portion made of a material transparent to at least a portion of the visible light spectrum and opaque to the actinic light of the dental material contained therein. Also, a dental cartridge having a body portion formed from a toroidal segment and a coaxial nozzle attached thereto. The dental cartridges are used in a dental syringe for application of the dental material to a patient. Several embodiments provide various discharge end configurations, including hemispherical, conical frustum, and flat. Additionally, dosing indicia are placed on the body portion of the dental cartridge, permitting the dentist to fill the dental cartridge with a predetermined volume of dental material. A specially configured piston having an appendage thereon is used in combination with the dental cartridge for extruding substantially all of the costly dental material therein.

Bulk dental cartridge

Dental syringe tip

A dental tray for counting, storing, shipping and dispensing cartridges that includes a plurality of integrally formed wells for securely holding and sealing a dental cartridge which are placed horizontally within the wells in a manner whereby the discharge nozzle of the cartridge is positioned so that it abuts a portion of the well for sealing it from contamination and which the tray may be formed of opaque or color material which will block curing rays when light activated material is placed within the dental cartridges. Each cartridge is individually retained within its respective well by a snap or friction fit. A sliding or rotating cover is provided which is spaced slightly above the cartridges so as to prevent unintentional dislodgement of the cartridge from its well or seat. Identifying indicia relating to the color or shade of material contained within the cartridges therein can be readily applied to the tray and/or cartridge and which trays can be readily incorporated into a rack system and organized for the convenience of the dentist.

Growing community of inventors

Hamden, CT, United States of America

John J Discko, Jr