JPH0856962A - Pressing device for dental viscous material - Google Patents

Abstract

PURPOSE: To provide a device capable of simply and easily extruding the dental viscous material packed in a cartridge immediately out of the inside of this cartridge when this device is mounted regardless of the residual amt. thereof. CONSTITUTION: This pressing device has the cartridge 1 which is provided with a projecting part for engagement on the outer periphery near the outlet at its front end and divided pieces 1c having the outside surfaces formed to a convergent taper shape and screwed with internal screw threads 1b on the inside surfaces at its rear end, is internally packed with the dental viscous material M and is fitted with a bottom closing member 2 to the divided piece 1c side and a rotating body 4 which is formed at one end to an opened cylindrical shape composed of the divided pieces, is provided with a projecting part 4b for engagement on the inside surface at the front end and is provided with a taper formed in surface-to-surface contact with the outside surfaces of the divided pieces 1c in a manner as to enable the actuation of the internal screw threads 1b. Further, the pressing device has a screw-like pressing rod 5 which constitutes a projecting part 5a fittable into a recessed part 2a formed in the bottom closing member 2 at the front end inserted into the cylindrical part of this rotating body 4 and has a guiding piece engaging with the inside surface of the cylindrical part of the rotating body 4 at the rear end and a supporting pin 6 which is mounted at the cylindrical part of the rotating body 4 and supports this pressing rod 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dental viscous material which allows a dental viscous material filled in a cylindrical cartridge to be extruded easily and easily immediately after mounting the cartridge regardless of the remaining amount in the cartridge. The present invention relates to a viscous material pressing device.

[0002]

2. Description of the Related Art Conventionally, in the field of dentistry, when dealing with dental viscous materials such as dental filling materials and artificial tooth materials, the dentist has a color tone that suits the purpose of treatment each time (in the case of a denture, the color tone of the original tooth). ), Etc., and based on the selection, the dentist, technician, and hygienist collected the appropriate amount of powder and kneading solution, which are the viscous material for dental use, and kneaded them thoroughly. Such dental viscous materials have come to be provided by being kneaded into a viscous state in advance in various color tones and filled in a cylindrical disposable container (hereinafter, also referred to as a cartridge).

As shown in FIG. 5, this cartridge has a tube 11 which is provided with an outlet 10 which is gradually narrowed at the front end and is provided with a cap 20 and a handle 12 at the rear end. Fill the viscous material and press the push rod 30 inserted into the tube 11 from the rear end to exit.
Although a viscous dental material that can be extruded in a predetermined amount from 10 has been used, it has been difficult to extrude only a necessary amount without waste. That is, if the pressing force applied to the pressing rod 30 is weak, it cannot be extruded by the required amount, and therefore the extrusion amount will be adjusted by the amount of division while further pressing, but in such an operation, it is generally more than the required amount. Most of the materials are taken out, it is complicated to take out the optimum required amount, and much of the material is wasted, and when the filled dental viscous material cannot be used all at once, there is a problem in organizing and storing the cartridge. .

As a means for solving such a drawback, for example, Japanese Patent Publication No. 6-20468 discloses a device for extruding a predetermined amount of viscous material from a cylindrical cartridge. This viscous material extruding device includes a rotary holder provided with means for screwing and fixing the rear end of the cartridge to the rear portion of a cylindrical body for accommodating the cartridge, and is fitted to the rear end of the rotary holder. Closing means in which a cylindrical body composed of a plurality of divided pieces with female threads engraved on the inner wall so as to surround the opening formed at the center of the closing plate that closes the rear opening is erected, and the plurality of divided pieces. An extruding rod having a male thread to be engaged with an internal thread provided on the inner wall of the screw thread and a flat protrusion piece provided at the rear end;
A holder mounted at the rear end of the rotary holder, which has a flat tubular portion for accommodating the flat projection piece provided at the rear end of the push rod, stores the cartridge in the rotary holder. In doing so, the tip of the pushing rod is brought into contact with the sealing piece provided in the rear end opening of the cartridge to push the pushing rod back to the rear part, and at the same time, the plurality of divided pieces provided in the closing means are set in the rear opening of the cartridge. The stick is pushed into the cartridge through the seal piece by the rotation of the holder, and the viscous material filled in the cartridge is pushed out. ing.

However, in this viscous material extruding device, for example, when 10% of the viscous material filled in a certain cartridge is used, 50% of the viscous material already filled in the cartridge is used. When it becomes necessary to replace the cartridge with another cartridge, the tip of the extrusion rod at the time of this replacement is in contact with the seal piece provided in the rear end opening of the cartridge in which 10% of the filled viscous material is used. Therefore, if an attempt is made to extrude a viscous material filled in another cartridge in which 50% of the viscous material is used as it is, the tip of the extrusion rod is in a state where 50% of the viscous material is used. The cartridge must be moved to a position where it abuts the seal piece provided at the rear end opening of the cartridge. Before, it is necessary to separate the rotary holder and the holder and push out the push rod, and after fixing the cartridge to the rotary holder, rotate the holder a number of times with respect to the rotary holder. It is necessary to let

That is, when the cartridge is replaced, the remaining amount of the viscous material filled in the cartridge detached from the extruding device for the viscous material is smaller than the remaining amount of the viscous material filled in the cartridge to be replaced next. In this case, when the cartridge to be replaced next is housed in the rotary holder, the tip of the push rod can be brought into contact with the seal piece provided at the rear end opening of the cartridge to push the push rod back to the rear portion. , If the remaining amount of the viscous material filled in the cartridge removed from the extruding device for this viscous material is larger than the remaining amount of the viscous material filled in the cartridge to be replaced next, the cartridge to be replaced next is selected. It is possible to bring the tip of the push-out rod into contact with the seal piece provided at the rear end opening of the cartridge when it is housed in the rotary holder. The push rod cannot be pushed back to the rear because it can not be pushed, which is a drawback that it can be very inconvenient to handle, and also a screw is used to fix or remove the cartridge from the rotation holder. Therefore, there is also a drawback that the work is complicated because the rotation holder has to be rotated a plurality of times to fix the cartridge.

[0007]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned drawbacks of the viscous material extruding device and allows the dental viscous material filled in the cylindrical cartridge to be used regardless of the remaining amount in the cartridge. An object of the present invention is to provide a device for pressing a viscous material for dental use, which can be easily and easily taken out immediately after mounting the cartridge and can be mounted with one touch.

[0008]

Means for Solving the Problems As a result of intensive research to solve the above-mentioned problems, the present inventor has found that an engaging projection is formed on the outer periphery near the outlet of the front end and is parallel to the axial direction on the opposite rear end. The outer surface is divided by the notch part and the outer surface is formed in a taper shape with a small diameter on the rear end side. A cylindrical cartridge filled with a material, a bottom block member fitted in the divided piece side in the cartridge and having a recess formed on the side opposite to the outlet, and one end of which is provided in parallel with the axial direction. And an engaging convex portion which is formed of a divided piece divided by a notch portion and has an open cylindrical shape, and which is provided on the inner surface of the distal end portion to engage with the engaging convex portion of the distal end portion of the cartridge by overcoming the engaging convex portion. The inside is inserted a specified length from the open end. A rotating body provided with a taper for operatively forming a female screw by making surface contact with the outer surface of the divided piece at the rear end of the cartridge, and a tip inserted into the cylindrical portion of the rotating body and having a tip at the bottom of the cartridge. A shape that forms a convex portion that can be removably fitted with the concave portion of the occluding member, and that engages with the inner surface of the cylindrical portion of the rotating body at the rear end portion on the opposite side to rotate integrally with the rotating body. A screw-shaped pressing rod forming a guide piece having a portion larger than the diameter of a male screw portion formed to be screwed with a female screw at the rear end portion of the cartridge; and a cylindrical portion of the rotating body. If the structure is made up of a support pin that is attached and supports the pressing rod so that it does not droop due to gravity when the rotating body is vertical, the pressing rod is in the most protruding state when the cartridge is removed, and The next cartridge is installed in that state Since it is maintained at, the concave portion of the bottom closing member and the convex portion of the tip of the pressing rod, which are fitted on the side opposite to the outlet in the cartridge to be mounted next, can be fitted immediately to fill the cartridge. The remaining amount of the viscous material for dental use is not a problem at all, and the cartridge can be attached to the rotating body only by inserting the divided pieces of the cartridge into the tapered portion provided in the cylindrical portion of the rotating body. Therefore, the present invention was completed by investigating what can be done with one touch.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A dental viscous material pressing apparatus according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is a sectional view for explaining a cartridge in a dental viscous material pressing device according to the present invention, FIG. 2 is a sectional view for explaining a rotating body in a dental viscous material pressing device according to the present invention, and FIG. FIG. 4 is an explanatory view showing a mounting process of the cartridge and the rotary body in the dental viscous material pressing device according to FIG. 4, and FIG. In the drawing, reference numeral 1 is a cylindrical cartridge having a dental viscous material M filled therein, and an outlet 1d for the dental viscous material M filled inside is provided at the tip of the cartridge. Exit
An engaging convex portion 1a is provided on the outer periphery in the vicinity of 1d, and a rear end portion on the opposite side of the outlet 1d is divided by a notch portion provided in parallel with the axial direction in which an internal thread 1b is screwed. Further, a plurality of divided pieces 1c are provided, and the outer surface of the divided piece 1c is formed in a tapered shape having a small diameter on the rear end side.

Numeral 2 is a bottom closing member fitted on the side of the divided piece 1c in the cylindrical cartridge 1, which prevents the viscous dental material M filled in the cartridge 1 from leaking and also has a dental viscosity. The material serves to press the material M, and the diameter of the outlet 1d side is 1d so that the dental viscous material M does not return in the direction opposite to the outlet 1d after pressing the dental viscous material M so as to push it out from the outlet 1d. The diameter is slightly smaller than the diameter on the opposite side, and a recess 2a is formed on the side opposite to the outlet 1d.

Reference numeral 3 denotes a holder mounted on the outer periphery of the tip of the cylindrical cartridge 1 and provided with knurls or the like on the outer periphery so that the cartridge 1 can be held so as not to rotate. This holder 3 is necessary. According to the cartridge 1
It may be attached to the outer circumference of the front end of the.

Reference numeral 4 denotes an open cylindrical shape composed of divided pieces divided at one end by a cutout portion 4a provided in parallel with the axial direction, and an engaging convex portion 1a at the front end portion of the cartridge 1 is formed on the inner surface of the front end portion. The cartridge 1 is provided with an engaging convex portion 4b for overcoming and engaging with the inside of the cartridge 1 and entering a predetermined length from the opening end (about one half of the total length of the cylindrical portion in the illustrated embodiment). The rotary body is provided with a taper 4c that is in surface contact with the outer surface of the divided piece 1c at the rear end portion and operably forms the female screw 1b.

Reference numeral 5 denotes a screw-shaped pressing rod inserted into the cylindrical portion of the rotating body 4, and the tip of the rod is a convex portion 5a which can be detachably fitted into the concave portion 2a of the bottom closing member 2 of the cartridge 1. And a rear end portion on the opposite side engages with the inner surface of the cylindrical portion of the rotating body 4 and is formed integrally with the rotating body 4 so that the screw-shaped pressing rod 5 rotates. 5b, this guide piece
5b has a portion larger than the diameter of the threaded portion.

Reference numeral 6 denotes a support pin which is attached to the cylindrical portion of the rotating body 4 and supports the pressing rod 5 so that the pressing rod 5 does not droop due to gravity when the rotating body 4 is made vertical. It also has a role of engaging the guide piece 5b of the rod 5 to prevent the pressing rod 5 from coming out of the rotating body 4,
The material is preferably an elastic body such as rubber.

Reference numeral 7 denotes a cap for closing the outlet 1d of the cartridge 1 to prevent foreign matter from adhering to the dental viscous material M filled in the cartridge 1 and deterioration of the dental viscous material M by light. Is.

[0016]

The mounting of the cartridge 1 and the rotating body 4 and the pressing operation of the dental viscous material M in the apparatus for pressing a dental viscous material according to the present invention, which comprises the above-mentioned components, will be described below.

Assembling of the dental viscous material pressing apparatus according to the present invention is performed by inserting the rear end of the cartridge 1 into the opening of the rotary member 4 and mounting and engaging the cartridge. At that time, the engaging convex portion 1a provided in the vicinity of the outlet 1d of the cartridge 1 and the engaging convex portion 4b of the rotating body 4 are engaged, and the engaging convex portion 1a and the engaging convex portion 4b are formed. What is engaged is that the divided piece at the tip of the rotating body 4 is provided with the cutout portion 4a for retaining elasticity, so that the divided piece formed by this cutout portion 4a is elastically expanded in diameter and the rotating body 4 is engaged. This is because the engaging convex portion 4b is moved over the engaging convex portion 1a of the cartridge 1.

On the other hand, at the rear end portion of the cartridge 1 opposite to the outlet 1d, the taper portion provided on the outer surface of the plurality of divided pieces 1c is elastic by the notch provided between the divided pieces 1c. Surface contact with a taper 4c formed inside by a predetermined length from the open end of the rotating body 4,
The female screw 1b screwed on the inner surface of the divided piece 1c is screwed into the male screw portion of the pressing rod 5, and the convex portion 5a at the tip of the pressing rod 5 contacts the concave portion 2a of the bottom closing member 2 of the cartridge 1. When the pressing bar 5 is brought into contact with the cartridge 1 and moved to the cartridge 1 side, the pressing bar 5
The convex portion 5a at the tip of the concave portion of the bottom block member 2 of the cartridge 1
Immediately fitted into 2a. This is because in the state where the cartridge 1 is not mounted on the rotating body 4, the convex portion 5a at the tip of the pressing rod 5 is maintained at the position closest to the open end of the rotating body 4 as will be described later. When inserting the rear end of the cartridge 1 into the opening of the rotating body 4,
Always press the pressing rod 5 into the recess 2a of the bottom block 2 of the cartridge 1.
This is because the convex portion 5a at the tip of is maintained in contact with it.

In this state, when the cartridge 1 is not rotated by gripping the holder 3 and the rotating body 4 is rotated clockwise, the guide piece 5b at the rear end of the pressing rod 5 is a cylinder of the rotating body 4. Since it engages with the inner surface of the cylindrical portion and rotates integrally with the rotating body 4, the male screw of the pressing rod 5 screwed to the female screw 1b screwed on the inner surface of the divided piece 1c of the cartridge 1 is Move to the outlet 1d side of the cartridge 1 and press the push rod 5
After the convex portion 5a at the tip of the cartridge is fitted into the concave portion 2a of the bottom closing member 2 in the cartridge 1, the bottom closing member 2 is attached to the cartridge 1
The viscous dental material M in the cartridge 1 is pushed out of the outlet 1d at the tip of the cartridge 1 by the pressing of the bottom closing member 2 in order to move it to the outlet 1d side.

Thus, a desired amount of the viscous dental material M in the cartridge 1 mounted on the rotating body 4 is used,
Next, when replacing the cartridge 1 filled with the dental viscous material M to be used, the cartridge 1 mounted on the rotating body 4 is first removed from the rotating body 4. This operation is performed by gripping the rotating body 4 and the holder 3 of the cartridge 1 mounted on the rotating body 4 respectively.
It is performed by moving the cartridge 1 through the holder 3 in a direction away from the parallel to the axial direction of the rotating body 4, and the elasticity is imparted by the notch 4a provided at the tip of the rotating body 4. The piece is expanded in diameter so that the engaging convex portion 4b of the rotating body 4 moves over the engaging convex portion 1a of the cartridge 1 and is provided on the outer surface of the plurality of divided pieces 1c on the opposite side of the outlet 1d of the cartridge 1. The divided piece is separated from the taper 4c formed inside by inserting a predetermined length from the open end of the rotating body 4 into the divided piece 1c by the elasticity provided by the cutouts provided between the divided pieces 1c. The screwing of the female screw 1b screwed on the inner surface of 1c with the male screw portion of the pressing rod 5 is released. However, the convex portion 5a at the tip of the pressing rod 5 is still in the state of being fitted in the concave portion 2a of the bottom block member 2 of the cartridge 1. In this state, when the cartridge 1 is further moved in the direction away from the rotating body 4 in parallel with the axial direction of the rotating body 4, the protrusion 5a at the tip of the pressing rod 5 fits into the recess 2a of the bottom closing member 2 of the cartridge 1. It moves together with the cartridge 1 because it is fitted, and the guide piece 5b at the rear end of the pressing rod 5
Is brought into contact with the support pin 6 to be prevented from moving and held by the support pin 6, and at the same time, the concave portion 2a of the bottom closing member 2 of the cartridge 1 and the convex portion 5a of the tip of the pressing rod 5 are fitted. Since it comes off, the convex portion 5a at the tip of the pressing rod 5 is maintained in the state of being located closest to the opening end side of the rotating body 4.

In this state, the rear end portion of the cartridge 1 filled with the dental viscous material M to be used next is attached to the rotary member 4.
The cartridge 1 can be inserted into the opening of the cartridge and mounted and engaged therewith, but the cartridge 1 may be a completely new cartridge or a cartridge having a remaining amount different from that of the completely new cartridge. As described above, this is maintained by being supported by the support pin 6 such that the convex portion 5a at the tip of the pressing rod 5 is located closest to the opening end side of the rotating body 4 when the previously used cartridge 1 is removed. Therefore, the rear end of the cartridge 1 is inserted into the opening of the rotary body 4 with the convex portion 5a at the tip of the pressing rod 5 contacting the concave portion 2a of the bottom sealing body 2 of the cartridge 1 to be used next. This is because the projection 5a at the tip of the pressing rod 5 is always fitted into the recess 2a of the bottom sealing body 2 of the cartridge 1 immediately.

The operation of mounting the cartridge 1 on the rotating body 4 is an operation of inserting the rear end of the cartridge 1 into the opening of the rotating body 4 and mounting and engaging it, that is, the bottom closing member 2 of the cartridge 1. With the convex portion 5a at the tip of the pressing rod 5 abutting on the concave portion 2a of the pressing rod 5, the pressing rod 5 is pushed into the cylindrical portion of the rotating body 4 and rotated with the engaging convex portion 1a provided in the vicinity of the outlet 1d of the cartridge 1. The taper portion provided on the outer surface of the plurality of divided pieces 1c on the opposite side of the outlet 1d of the cartridge 1 is engaged with the engaging convex portion 4b of the body 4 by a predetermined length from the open end of the rotating body 4. The female screw 1b screwed on the inner surface of the divided piece 1c by making a surface contact with the taper 4c formed on the inner side and screwed into the male screw portion of the pressing rod 5 and then the rotating body 4 is mounted on the cartridge 1. Rotate them to move the pressing rod 5 to the cartridge 1 side. It is only necessary to fit the convex portion 5a at the tip of the pressing rod 5 into the concave portion 2a of the bottom closing member 2 of the cartridge 1 and to perform a special operation such as rotating the cartridge 1 and fixing it to the rotating body 4. Therefore, the cartridge 1 can be easily mounted.

[0023]

As described in detail above, the dental viscous material pressing device according to the present invention, like the device disclosed in Japanese Examined Patent Publication No. 6-20468, can remove viscous material when a cartridge is replaced. When the remaining amount of the viscous material filled in the cartridge removed from the extrusion device is larger than the remaining amount of the viscous material filled in the cartridge to be replaced next, the cartridge to be replaced next is placed in the rotary holder. Since the tip of the push rod cannot be brought into contact with the seal piece provided at the rear end opening of the cartridge when it is stored, the push rod cannot be pushed back to the rear part, and its handling may be very inconvenient. Not only is there no drawback, but it does not use screws to fix or remove the cartridge to the rotary holder, There is an advantage that work so need only move parallel to the direction is simple.

As a result, since the cartridge can be replaced while the dental viscous material remains in the cartridge, each kind of cartridge can be immediately replaced and used for one rotating body. The treatment time can be shortened at the dentist and the hygienist, and the practitioner can carry out the treatment with peace of mind, and the technician can also reduce the procedure time.

The value of the pressing device for a viscous dental material according to the present invention, which has various advantages as described above, is very great to contribute to the dental field.

[Brief description of drawings]

FIG. 1 is a sectional view for explaining a cartridge in a dental viscous material pressing device according to the present invention.

FIG. 2 is a sectional view for explaining a rotating body in the dental viscous material pressing device according to the present invention.

FIG. 3 is an explanatory view showing a mounting process of the cartridge and the rotary body in the dental viscous material pressing device according to the present invention.

FIG. 4 is a side view showing a rear end portion of the cartridge shown in FIG.

FIG. 5 is an explanatory diagram of a conventional cartridge.

[Explanation of symbols]

 1 Cartridge 1a Engagement convex part 1b Female screw 1c Divided piece 1d Exit 2 Bottom blocker 2a Recessed part 3 Retainer 4 Rotating body 4a Notch part 4b Engagement convex part 4c Taper 5 Press rod 5a Convex part 5b Guide piece 6 Support pin 7 Cap 10 Outlet 11 Tube 12 Handle 20 Cap 30 Push rod

Claims (3)

[Claims] 1. An engaging convex portion (1a) is formed on the outer periphery near the outlet (1d) of the front end portion, and is divided by a notch provided on the opposite rear end portion in parallel with the axial direction, and the outer surface is a rear end portion. It has a plurality of divided pieces (1c) that are tapered with a small diameter on the side and internally threaded with internal threads (1b), and are filled with a dental viscous material (M). Cylindrical Cartridge (1)
And a bottom closing member (2) fitted on the side of the split piece (1c) in the cartridge (1) and having a recess (2a) on the side opposite to the outlet (1d), and one end of which is a shaft The opening has a cylindrical shape composed of divided pieces divided by a notch (4a) provided in parallel with the direction, and the engaging projection (1a) of the tip of the cartridge (1) is formed on the inner surface of the tip. There is provided an engaging convex portion (4b) for overcoming and engaging, and a divided piece (1c) at the rear end of the cartridge (1) is inserted inside by a predetermined length from the opening end.
(4) provided with a taper (4c) that is in surface contact with the outer surface of the female member and operably forms the female screw (1b);
It is inserted in the cylindrical part of (4) and the tip is a cartridge.
A convex portion (5a) which can be detachably fitted into the concave portion (2a) of the bottom closing member (2) of (1), and an inner surface of the tubular portion of the rotating body (4) is formed at the rear end portion on the opposite side It is larger than the diameter of the male screw part that is engaged with the rotating body (4) and rotates integrally with the female screw (1b) at the rear end of the cartridge (1). Screw-shaped pressing rod (5) forming a guide piece (5b) having a portion
And a support pin (6) attached to the cylindrical portion of the rotating body (4) and supporting the pressing rod (5) so that it does not droop due to gravity when the rotating body (4) is vertical. A device for pressing a viscous material for dental use, which is characterized in that 2. The dental viscous material pressing device according to claim 1, wherein a holder (3) having a knurl on its outer periphery is mounted on the outer periphery of the tip of the cartridge (1). 3. The support pin (6) is made of an elastic material.
Or the pressing device for the viscous dental material according to item 2.