JPH0530427Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is a dental application for injecting a dental agar impression material stored inside the oral cavity into a site where an intraoral impression is to be taken during dental treatment. This invention relates to a heating and cooling device for a syringe for agar impression material (hereinafter sometimes simply referred to as 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 agar impression material is solid at room temperature, so it is loaded into a syringe during treatment and first heated to a complete sol state (usually
After that, the second heating temperature (usually around 60℃) is heated to maintain a sol-like state in the area where the intraoral impression is to be taken and does not cause discomfort to the patient.
It is cooled to a temperature close to

The heating and cooling methods include heating the syringe loaded with the agar impression material in boiling water to the first heating temperature and then cooling it naturally or by transferring it to hot water at the second heating temperature; There is a method in which the part is brought into contact with a heated metal body (for example, a metal block having a hole into which a syringe is inserted), heated to a first heating temperature, and then cooled to a second heating temperature.

Among the above heating methods, the former method, which involves heating with boiling water and then cooling, heats the entire syringe uniformly, so the agar impression material has a uniform temperature throughout even when cooled to the second heating temperature. On the other hand, it has the disadvantage that it takes a long time for the growth of fungi in the water and for heating and cooling. Therefore, Mikiakiaki
No. 62-12312 and Japanese Unexamined Patent Publication No. 63-109854 disclose devices for heating and then cooling the cylinder portion of a syringe using a metal heating body such as a metal block.
In those devices, the heating part of the metal heating body that comes into contact with the cylinder part of the syringe is a cylindrical round hole, and as a means of cooling it,
In the case of No. 12312, active cooling means were not adopted to lower the metal heating element to the second heating temperature, and in the case of JP-A-63-109854, the metal heating element was actively cooled with a fan. The syringe in the syringe insertion hole was indirectly cooled by cooling the syringe in the syringe insertion hole.

[The problem that the idea aims to solve]

In the conventional heating and cooling device for dental agar impression material syringes as described above, the heating and cooling part of the metal heating body into which the syringe is inserted is a cylindrical hole, and although it is cooled by a fan, Since the syringe is not directly cooled by a fan but indirectly cooled through a metal heating element, there remains the problem that cooling takes a considerable amount of time. This length of time prolongs the dental treatment time, which is a major problem in situations where shortening the treatment time in dentistry is strongly desired.

Therefore, the present invention has been developed to reduce the cooling time without impairing the temperature uniformity of the dental agar impression material when cooling the syringe for the dental agar impression material from the first heating temperature to the second heating temperature. An object of the present invention is to provide a heating and cooling device for a syringe for agar impression material.

[Means to solve the problem]

As a result of various studies to solve the above-mentioned problems, the inventor of the present invention formed a heated metal block with a long groove deeper than the diameter of the cylinder of the dental agar impression material syringe and almost equal to the length of the cylinder. An electric blower is provided to attach the impression material syringe and supplies cooling air along the long groove, thereby cooling the syringe directly and simultaneously cooling the metal block by cooling the groove wall of the long groove. The present invention was completed by discovering that dental agar impression material can be cooled to a desired temperature quickly and uniformly.

EMBODIMENT OF THE INVENTION Hereinafter, one embodiment of the heating and cooling device for a syringe for dental agar impression material according to the present invention will be described in detail based on the drawings.

FIG. 1 is a longitudinal cross-sectional view of one embodiment of the heating and cooling device for a dental agar impression material syringe according to the present invention;
The figure is a perspective view of one embodiment of the metal block of the heating and cooling device for a dental agar impression material syringe according to the present invention, and FIG. 3 is a schematic diagram showing the relationship between the depth of the long groove of the metal block in FIG. 2 and the syringe. It is an explanatory sectional view.

In the drawing, reference numeral 1 denotes a metal block with good thermal conductivity such as aluminum, and this metal block 1 is provided with a long groove 2 having a groove wall 2a as described below. Cylinder b of a dental agar impression material syringe A, which is composed of a cylindrical cylinder b having an agar impression material injection part a at its tip and a piston c sliding inside the cylinder b, is supported. . In 2, the shape of the groove wall 2a is deeper than the diameter of the cylinder b of the syringe A for dental agar impression material, and the bottom surface has a semicircular cross section with a slightly larger diameter than the diameter of the cylinder b, and the length of the cylinder b is It is a long groove that is almost equal to the length of the groove. Reference numeral 3 denotes a heating element attached to the metal block 1, and this heating element 3 may be detachably provided to the metal block 1, or may be buried. 4 is a temperature detection element attached to the metal block 1; 5 is a control circuit that controls the temperature of the heating element 3 based on the temperature detected by the temperature detection element 4; 6 is a cooling element along the long groove 2; This is an electric blower that supplies cooling air, and as shown in the figure, the air inside the case is exhausted to the outside by the electric blower 6, and cooling air is sucked in from the ventilation hole 9, which will be described later, and is drawn along the long groove 2. Even if cooling air is supplied,
Conversely, the cooling air directly taken in by the electric blower 6 may be supplied to the long grooves 2 and then exhausted to the outside of the case through the ventilation holes 9. Reference numeral 7 designates a container that houses the metal block 1 equipped with a heating element 3 and a temperature detection element 4, a control circuit 5, and an electric blower 6; 8 is a lid for the container 7; Ventilation holes 9 are provided for intake or exhaust. Note that the vent hole 9 may be provided in the container 7, and the vent hole 9 may be provided at a desired position along the long groove 2 to which cooling air is supplied.

[Effect]

When heating and cooling syringe A using the heating and cooling device for a dental agar impression material syringe according to the present invention having the above-described structure, first open the lid 8 and insert the cylinder b of the syringe A into the long groove 2. After fitting and setting through the opening, the lid body 8 is closed, and then the metal block 1 is heated to the first heating temperature by the heating element 3, and the dental agar impression material in the cylinder b is completely sol-formed. After that, the power to the heating element 3 is stopped or the amount of current is weakened, and the electric blower 6 is operated with the syringe A set on the metal block 1 to supply cooling air along the long groove 2. After actively cooling down to the second heating temperature, the amount of current applied to the heating element 3 is controlled so as to maintain the second heating temperature.

At this time, in the heating and cooling device for dental agar impression material syringes according to the present invention, the bottom surface of the long groove 2 has a semicircular cross section with a diameter slightly larger than the diameter of the cylinder b of the syringe A. Since the length is almost equal to the length of cylinder b, almost the entire length of the lower half circumferential surface of cylinder b comes into contact with the bottom surface of the long groove 2, and cylinder b is sufficiently heated and the dental agar impression material inside it is easily heated. It is heated to a first heating temperature at which it becomes a sol. When cooling to the second heating temperature, when the electric blower 6 is driven, the air inside the container 7 is discharged to the outside, and cold air from the outside flows in through the ventilation hole 9 of the lid 8. An air current is generated along the long groove 2, or cold air from the outside taken in from the vent 9 of the container 7 is generated along the long groove 2, and the air is exhausted from the vent 9 of the lid body 8, and the air is exhausted from the cylinder. b is directly cooled, and the groove wall 2a of the long groove 2 is also cooled, which acts like a cooling fin, thereby cooling the metal block 1 and further promoting the cooling of the cylinder b. The groove wall 2a is the cylinder b
Because the surrounding area of the dental agar impression material is cooled, the temperature uniformity of the dental agar impression material is not affected. As a result, the cooling time of the dental agar impression material in the cylinder b is shortened. Note that if the long grooves 2 are too deep, there will be a problem of a reduction in the speed of the cooling air, and if the long grooves 2 are too shallow, there will be a problem that the effectiveness of the groove walls 2a as cooling fins will be reduced. In order to achieve this, the depth of the long groove 2 is preferably about 1.5 to 2.5 times the diameter of the cylinder b.

[Effect of idea]

As described in detail above, the heating and cooling device for a syringe for dental agar impression material according to the present invention is provided with a long groove into which the cylinder of the syringe for dental agar impression material is inserted in the metal block to be heated, and an electric blower. By providing a structure in which cooling air is supplied into the long grooves, the cylinder is directly cooled by the cooling air, and the groove walls in the long grooves act like cooling fins, so the cylinder Cooling is further promoted and the cooling time of the dental agar impression material is shortened. In addition, since no boiling water is used, there are no disadvantages such as the propagation of bacteria, and it is preferable in terms of hygiene, and its practical value is very great.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of one embodiment of the heating and cooling device for a dental agar impression material syringe according to the present invention;
The figure is a perspective view of one embodiment of the metal block of the heating/cooling device for a dental agar impression material syringe according to the present invention, and FIG. 3 is a schematic diagram showing the relationship between the depth of the long groove of the metal block in FIG. 2 and the syringe. It is an explanatory sectional view. 1...Metal block, 2...Long groove, 2a...
Groove wall, 3... heating element, 4... temperature detection element, 5...
...Control circuit, 6...Electric blower, 7...Container, 8
... Lid body, 9 ... Ventilation hole, A ... Syringe for dental agar impression material, a ... Injection part, b ... Cylinder,
c... Piston.

Claims (1)

[Scope of utility model registration request] A case consisting of a container 7 and a lid 8 for the container 7 includes a cylindrical cylinder b having an injection part a of dental agar impression material at its tip, and a piston c sliding inside the cylinder b. A syringe for dental agar impression material that is deeper than the diameter of cylinder b for supporting syringe A for dental agar impression material, and whose bottom surface has a semicircular cross section with a diameter slightly larger than the diameter of cylinder b. A metal block 1 provided with a long groove 2 approximately equal to the length of cylinder b of A.
, a heating element 3 and a temperature detection element 4 mounted on the metal block 1, and an electric blower 6 that supplies cooling air along the long groove 2. Heating and cooling device for syringe for agar impression material.