JP2010193941A - Dental manual extruder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dental manual extruder easily extruding a dental viscous material if the dental viscous material inside a cartridge is hardened when the temperature is low. <P>SOLUTION: The dental manual extruder 1 is for extruding the dental viscous material, as the content of the cartridge, from the cartridge 2 having a flange 2a in the vicinity of the rear end and a nozzle 2b at the distal end. The dental manual extruder 1 has a cartridge housing part 1d at the distal end part of a barrel 1c through which a plunger 1b to be extruded by a handle 1a penetrates. The cartridge 2 is engaged with the flange 2a to be housed in the cartridge housing part 1d. The dental manual extruder 1 is characterized by a heater 1e disposed around the cartridge housing part 1d. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a dental manual pusher used for extruding a dental viscous material stored in a cartridge.

  In dental treatment, dental viscous materials such as dental filling materials, artificial tooth materials, and crown preparation materials are provided by being filled in cylindrical disposable containers (hereinafter referred to as cartridges). As the cartridge for the dental viscous material, a cartridge including a cylindrical cartridge main body having a nozzle at the front end and a flange in the vicinity of the rear end, and an inner plug slidable inside the cartridge main body is widely used (for example, (See Patent Document 1). Such a cartridge is used by using a dedicated manual pusher (applicator, applier) (see, for example, Patent Documents 2 to 6).

JP 2001-353169 A JP 58-81033 A JP-A-3-324675 JP-A-4-64699 JP 9-506271 gazette JP 2003-506271 A

  Since the dental viscous material is generally a thermoplastic material, it tends to become hard and difficult to be pushed out of the cartridge when the temperature during use becomes low. Hardened dental viscous materials are difficult to extrude, especially for users without arm strength. In addition, the manual pusher adjusts the push-out amount of the dental viscous material by adjusting the subtle push-out amount with the force of the fingers, so the problem is that it is difficult to push out the appropriate amount of the viscous dental material that has become hard was there.

  As a result of intensive studies to solve the above problems, the present inventor has found that the problems can be solved by providing a mechanism for warming the dental viscous material in a dental manual pusher, and the present invention has been completed. did.

  That is, the present invention relates to a dental manual pusher for extruding a dental viscous material as a content from a cartridge having a flange in the vicinity of the rear end and a nozzle at the tip, and a barrel through which a plunger pushed out by a handle portion passes. The dental manual pusher is characterized in that it has a cartridge storage portion that engages and stores the cartridge with the flange at the tip portion of the cartridge, and a heater is provided around the cartridge storage portion.

  The dental manual pusher according to the present invention can easily push out the dental viscous material stored in the cartridge even if the outside air temperature during use is low by providing a heater around the cartridge storage portion. An excellent dental manual pusher. In addition, if the dental manual pusher according to the present invention is used, the viscosity of the dental viscous material can be adjusted to be lowered to a viscosity preferred by the operator.

Plane explanatory drawing which shows one Example of the dental manual extrusion tool which concerns on this invention.

  In the drawings, reference numeral 1 denotes a dental manual pusher according to the present invention, and a flange engaging portion for engaging a flange 2a of a cartridge 2 to be described later with a tip portion of a barrel 1c through which a plunger 1b pushed out by a handle portion 1a passes. A cartridge housing 1d having 1f is provided. A heater 1e is provided around the cartridge storage portion 1d, and the viscous material for dental use in the cartridge is not hardened by heating the cartridge 2 even when the temperature is low. The cartridge storage portion 1d in the present embodiment is open at the top, and the cartridge can be attached and detached from the opening.

  As the heater 1e, a small heater using a resistance wire or a metal oxide element is suitable. If a thermistor is used as the heater 1e, temperature control becomes easy. The control temperature is desirably controlled at approximately 20 to 40 ° C. from the temperature characteristics of the dental viscous material. If the temperature exceeds 40 ° C. for a long time, the dental viscous material may be deteriorated or hardened. The heater 1e may be provided outside the cartridge housing portion 1d as illustrated, or may be incorporated inside or inside the cartridge housing portion. The battery 1m as a power source can be freely arranged depending on the design of the dental manual pusher 1. In the embodiment, it is provided in the front handle 1aa and is connected to the heater 1e by an electric wire 1i. In addition, a lower portion of the front handle 1aa has a connection portion 1g for connecting to a charger (not shown). Further, if a switch for turning on and off the heater 1e and a pilot lamp 1h for notifying the operation thereof are appropriately provided, the operability is improved.

  As the handle portion 1a, a handle structure used in a conventional manual pusher can be used. In the embodiment, it consists of two parts, a front handle 1aa and a rear handle 1bb, which are connected by a hinge 1ac on the upper side in the drawing. In the front handle 1aa, a barrel 1c is fixed or integrally provided, and the rear end of the plunger 1b in the barrel 1c is in contact with the rear handle 1ab via a spring 1k.

  Reference numeral 2 denotes the above-described cartridge, which has a cylindrical shape for containing a dental viscous material. This cartridge 2 has a flange 2a for mounting on a flange engaging portion 1f provided in the cartridge housing portion 1d of the dental manual pusher 1 in the vicinity of the rear end, and has a nozzle 2b at the tip. Although not shown, the cartridge 2 has an inner plug that can slide inside the cartridge 2.

  Conventionally used resin materials can be used for the cartridge 2, for example, polyethylene, polyacetal, polypropylene, polyamide, vinyl chloride resin, nylon, phenol resin, polyurethane, saturated polyester resin, melamine resin, polyvinylidene chloride. , Unsaturated polyester resin, polybutadiene, polystyrene, EVA (ethylene-vinyl acetate copolymer) resin, styrene resin, polymethylpentene, methacrylstyrene, ABS (acrylonitrile, butadiene, styrene) resin, polycarbonate, and the like.

1 Dental Manual Extruder 1a Handle
1aa Front handle
1ab Rear handle
1ac Hinge 1b Plunger 1c Barrel 1d Cartridge 1e Heater 1f Flange engaging part 1g Connection part 1h Pilot lamp 1i Electric wire 1k Spring 1m Battery 2 Cartridge 2a Flange 2b Nozzle

Claims (1)

  In a dental manual pusher for extruding a dental viscous material as a content from a cartridge having a flange in the vicinity of the rear end and having a nozzle at the tip, the plunger pushed out by the handle portion is inserted into the tip portion of the barrel, A dental manual pusher characterized by having a cartridge storage portion for engaging and storing the cartridge with the flange, and a heater provided around the cartridge storage portion.

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