JPH0530425Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is a syringe for dental agar impression material (hereinafter referred to as , sometimes simply called a syringe).

[Conventional technology]

In recent years, gel-like agar has been widely used as a dental impression material for taking impressions in dental treatment. This dental agar impression material is solid at room temperature, so during treatment, it is loaded into a syringe, first heated to form a sol, and then applied to the area where the intraoral impression is to be taken. Approximately 60℃, which is the temperature that maintains the condition and does not cause discomfort to the patient.
It is cooled down and injected.

The heating and cooling methods include heating the syringe loaded with dental agar impression material in boiling water and then cooling it, and heating and cooling the syringe loaded with dental agar impression material with a metal body equipped with a heating source (for example, when the syringe is heated). There is a method in which the material is heated by contacting it with a metal block (such as a metal block with a hole into which it is inserted) and then cooled.

In this way, dental agar impression material is loaded into a syringe and heated from solid room temperature to a temperature close to 100°C to form a sol, which then maintains its sol form and does not cause discomfort to the patient. The temperature is approx.
It is used after being cooled to 60°C, and when used, the syringe is generally heated to approximately 60°C after passing through the above temperature process using a special heating device that is set in it.
It is now being maintained.

However, the method of contacting a metal body equipped with a heating source has the advantage of being able to automatically heat the body in a short time compared to the method of using boiling water; A structure was adopted in which only the cylinder part came into contact with a metal body equipped with a heating source.

[The problem that the idea attempts to solve]

In this way, syringes for dental agar impression materials undergo a repeated process of being heated to a fairly high temperature and then cooled down to room temperature. Approximately 60℃ to extrude the agar impression material
The syringe is a heating device that is made of metal and is durable and does not easily undergo thermal deformation due to the relatively large compressive force at nearby high temperatures. In most cases, the structure is such that only the cylinder part loaded with the dental agar impression material is in contact with a metal body equipped with a heating source, and the metal piston is set in such a way that only the cylinder part loaded with dental agar impression material is in contact with a metal body equipped with a heating source. The part of the dental agar impression material loaded in the syringe that comes into contact with the metal piston is lower in temperature than the other parts, so when the syringe is removed from the heating device and used, this part acts as a cooling body. There was a problem that gelation started as the temperature decreased further.

The present invention provides a syringe for dental agar impression material that eliminates the adverse effects of a metal piston that acts as a heat radiator because it is drawn outward from the cylinder in which the dental agar impression material is loaded and is in contact with the outside air. That is the issue.

[Means to solve the problem]

As a result of various studies to solve the above problem, the inventor of the present invention found that if a heat insulating member made of rubber or plastic is attached to the tip of the metal piston of the syringe, that is, the tip of the side inserted into the cylinder,
They discovered that it was possible to prevent the heat from the dental agar impression material from being radiated to the metal piston, and completed the present invention.

Hereinafter, the syringe for dental agar impression material according to the present invention will be explained based on the drawings.

Fig. 1 is a cross-sectional view of one embodiment of the syringe for dental agar impression material according to the present invention when dental agar impression material is loaded, and Fig. 2 is an example of the heating means of the syringe for dental agar impression material. FIG. 3 is a cross-sectional view of a conventional dental agar impression material syringe.

In the drawing, 1 is a hollow cylinder into which dental agar impression material A is loaded, and its outer circumferential surface is made of plastic so that it can be held by hand at a high temperature of around 60°C, and its inner circumference is A stainless steel tube 1a is fixed to the surface to strengthen its strength and to prevent scratches from occurring even if it comes into contact with a metal piston 2, which will be described below. 2 is a metal piston that slides inside the cylinder 1 and pushes out the dental agar impression material A; 3 is a heat insulating member made of rubber or plastic that is attached to the tip of the metal piston 2; may be fixedly provided at the tip of the metal piston 2 or may be provided removably. 4 is a head attached to the tip of the cylinder 1 by means such as screwing; 5 is an injection part for the dental agar impression material A provided in the head 4; and 5a is a protection part for the injection part 5 when not in use. The cap 6 is a heating device for the syringe.

[Effect]

When injecting dental agar impression material A into the area where an impression is to be taken using the syringe for dental agar impression material according to the present invention having the above-described structure, first, the gel-like dental material in the rod shape is injected. The agar impression material A is loaded into the cylinder 1, and then the metal piston 2 is inserted into the cylinder 1. Next, as shown in FIG. 2, the part of the metal cylinder 1 loaded with the dental agar impression material A is inserted into the heating device 6 and heated until the dental agar impression material A becomes a sol. After that, the syringe is placed in or taken out from the heating device 6 and cooled to about 60° C., and then the metal piston 2 is slid toward the head 4 to inject the dental agar impression material A from the injection section 5. It is injected onto the area of the patient where the impression is to be taken.

At this time, in the dental agar impression material syringe according to the present invention, the rubber or plastic heat insulating member 3 attached to the tip of the metal piston 2 is connected to the dental agar impression material located at the tip of the metal piston 2. The heat of the dental agar impression material A is transmitted to the metal piston 2 and radiated, thereby preventing the dental agar impression material A in that area from becoming lower in temperature than other areas and hardening.

[Effect of idea]

As detailed above, according to the syringe for dental agar impression material according to the present invention, a rubber or plastic heat insulating member is attached to the tip of the metal piston, so that the tip of the metal piston and other parts The temperature difference between the dental agar impression material and the dental agar impression material is almost eliminated, and the dental agar impression material at the tip of the metal piston is no longer cooled and solidified into a sol, resulting in less waste of the dental agar impression material. It has the effect of smoothing out injection as well as eliminating the need for agar impression material, and is simply an improvement on the conventional dental agar impression material syringe by attaching a rubber or plastic heat insulating member to the tip of the metal piston. Therefore, the production cost is low, and there is an economical advantage, and its practical value is very great.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of one embodiment of the syringe for dental agar impression material according to the present invention when dental agar impression material is loaded, and Fig. 2 is an example of the heating means of the syringe for dental agar impression material. FIG. 3 is a cross-sectional view of a conventional dental agar impression material syringe. 1...Cylinder, 1a...Stainless steel pipe, 2...
...Metal piston, 3...Insulating member made of rubber or plastic, 4...Head, 5...Injection part, 5a...Cap, 6...Heating device, A...
Dental agar impression material.

Claims (1)

[Scope of utility model registration request] A head 4 provided with an injection part 5 for dental agar impression material A, a cylinder 1 to which the head 4 is attached at one end and into which dental agar impression material A is loaded from the other end, and the inside of the cylinder 1. In a dental agar impression material syringe, the metal piston 2 is inserted into the cylinder 1 and pushes the dental agar impression material A into the head 4. A syringe for dental agar impression material, characterized in that a heat insulating member 3 made of rubber or plastic is attached.