JP3123214B2 - Container and filling device for kneading calcium phosphate cement - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container and a filling device for kneading calcium phosphate cement used for medical and dental purposes.

[0002]

2. Description of the Related Art Calcium phosphate cement is useful in the medical and dental fields because of its excellent biocompatibility after hardening. Conventionally, a method of kneading the cement powder material and the liquid material with a spatula or the like on glass, a method of kneading with a mortar and a pestle, and the like have been used.

However, in the former, there are problems that the operation is complicated and it is not suitable for a large amount of kneading, and in the latter, when a plastic mortar is used, the wall surface is cut off by a cement powder material during kneading, There is a problem that impurities are mixed. Therefore, it is conceivable to use a mortar made of an agate made of a hard material, but such a mortar made of an agate uses a high cost and is inferior in operability. It is also conceivable to knead with a bone cement kneader conventionally used for kneading bone cement, but in this kneader it is necessary to make the viscosity of the cement paste relatively low, in other words For example, it is necessary to reduce the powder-liquid ratio during kneading, and there is a problem that a high-strength hardened calcium phosphate cement cannot be obtained.

On the other hand, as a method of filling a kneaded cement paste, a method of simply pouring the paste into a material to be filled has conventionally been used. However, in this method, there are problems such as a long curing time and a high strength cured cement cannot be obtained. Therefore, a method using a filling cartridge has been proposed, but this method requires a step of filling the filling cartridge with the paste. In this step, the paste must be filled in the cartridge in an open system, and there is a problem that foreign matter is mixed in the paste and a problem that the operation at this time is complicated.

[0005]

An object of the present invention is to provide a can be kneaded powder material calcium phosphate cement and a hardening liquid by vibration, phosphorylation Cie um cement container body itself without transferring to another container An object of the present invention is to provide a calcium phosphate cement kneading container that can be used in a filling device.

Another object of the present invention is a filling apparatus in which the kneading container is diverted, wherein the kneaded material obtained in the kneading container can be easily mixed with no impurities. It is an object of the present invention to provide a calcium phosphate cement filling device which can be directly filled into a desired position.

[0007]

According to the present invention, there is provided a container for kneading a powdery material of calcium phosphate cement and a hardening liquid by vibration, comprising: a container main body; and a container provided at one end of the container main body. A first opening for discharging a calcium phosphate cement powder material and a curing liquid, a first cover member detachably sealed to the first opening, and the powder material provided at the other end of the container body Bei example a second opening for receiving a pushing member for pushing the kneaded with a curing liquid, and a second cover member for removably sealing the opening of the second and,
A first cover member and a second cover member are mounted on the container body.
The shape of the inner peripheral surface of both ends of the container when worn has a curvature
That it (hereinafter referred to as kneading container) calcium phosphate cement kneading container capable diverted to a filling device according to claim is provided.

Further, according to the present invention, a container body containing a kneaded material kneaded by vibrating a powder material of calcium phosphate cement and a hardening liquid, and the kneaded material provided at one end of the container body is discharged. Opening, a second opening for accommodating an extruding member provided at the other end of the container body for pushing out the kneaded material through the first opening, and the second opening. Extrusion means for extruding the kneaded material through the first opening, the first opening is removed after vibration kneading a first cover member for sealing the opening, and the second opening is sealed for the opening. A calcium phosphate cement filling device (hereinafter referred to as a filling device), characterized in that the kneading container is used, in which the second cover member to be removed after vibration kneading is used .

The powder material of the calcium phosphate cement is not particularly limited as long as it is generally used as a calcium phosphate cement for medical and dental purposes. Cement containing α-type tricalcium phosphate, quaternary calcium phosphate or the like as a main component, specifically, Is α-type tribasic calcium phosphate or quaternary calcium phosphate alone and a mixture thereof, α-type tribasic calcium phosphate and a mixture of dibasic calcium phosphate and / or monobasic calcium phosphate, quaternary calcium phosphate and dibasic calcium phosphate and / or monobasic calcium phosphate And the like.

The hardening solution is not particularly limited as long as it is generally used as a hardening solution for medical and dental cements. Specific examples include water; polyacrylic acid, citric acid,
Aqueous solution in which an organic acid such as malic acid or a mixture thereof is dissolved; sodium chloride, sodium chondroitin sulfate,
An aqueous solution in which a water-soluble salt such as sodium succinate, sodium lactate, or a mixture thereof is dissolved is preferred.

The powder-liquid ratio when the powdered calcium phosphate cement and the hardening liquid are poured into the kneading container is such that if the hardening liquid is too small, it cannot be kneaded sufficiently, and the desired kneaded product cannot be obtained. Since it is difficult to obtain, it is preferable to set the weight ratio to 3.6 or less, particularly 3.0 or less. Further, the injection amount into the kneading container may be an amount capable of sufficiently performing the vibrating kneading treatment. In particular, the total volume in the kneading container: the total volume of the calcium phosphate cement powder material and the curing liquid is The volume ratio is preferably in the range of 1: 0.9 to 0.1.

The shape of the kneading container of the present invention is such that a cylindrical hollow body and an inner peripheral surface are formed in the vibration kneading process of the calcium phosphate cement powder and the hardening liquid in order to make the mixing uniform. It is desirable to have a capsule-shaped shape or the like consisting of both ends having a curvature. The materials of the kneading container and the filling device are not particularly limited, and specifically, resins such as polypropylene, methylpentene resin, polycarbonate, and fluororesin; autoclaves made of metal such as stainless steel; Preference is given to sterilization-resistant materials.

The vibration applied to the kneading container in the vibration kneading process can be applied manually or by a machine. In order to apply uniform vibration in a short time, for example, an "Amalgam mixer D type" ( It is more preferable to use mechanical vibration using a vibrator such as trade name, manufactured by Shofu Co., Ltd.).
For example, in the case of using a kneading container having an ellipsoidal shape, the vibration may be a method in which the major axis direction of the container is horizontal and simple horizontal vibration is performed in the horizontal direction. Is more preferable. The frequency varies depending on the powder-liquid ratio, but is preferably about 3000 times / minute for mechanical vibration and 300 times / minute or less for manual simple transverse vibration.
In order to further enhance the kneading effect, a weight such as a pestle may be inserted and vibrated. The curing speed can be adjusted by adjusting the ambient temperature around the capsule container, and is preferably from 10 to 50 ° C. in order to provide uniform kneading. Further, the kneading time becomes shorter as kneading at a high temperature, but is preferably 5 to 30 seconds, particularly preferably 10 to 20 seconds in mechanical vibration.

On the other hand, the shape of the tip portion of the extruding member used in the filling device of the present invention is not particularly limited as long as it does not produce a dead space at the contact portion between the extruding member and the container body when extruding the kneaded material. However, specifically, it is preferably a curved shape.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the mixing container and the filling device of the present invention will be described with reference to the drawings, but the present invention is not limited to these.

FIG. 1 is an exploded cross-sectional view of a kneading container 10, which shows a container body 11 for accommodating a powder material and a hardening liquid of calcium phosphate cement, and the powder material provided at the upper end of the container body 11. And a first cover member 12 for sealing the first opening 11a for discharging the hardening liquid, and an extruding member used when discharging the kneaded product of the powder material and the hardening liquid from the first opening 11a. (Not shown), a second opening 11b provided at the lower end of the container body 11
And a second cover member 13 for hermetically sealing.

The first opening 11 in the container body 11
The first cover member 12 is provided with a thread 12a for screwing to the thread 11c and sealing the first opening 11a. . On the other hand, the second opening 1 in the container body 11
A thread 11d is provided on an inner peripheral surface of the thread 1b, and the second cover member 13 is screwed to the thread 11d, and a thread 13a for sealing the second opening 11b.
Is provided.

The kneading container 10 has a screw thread 11c of the container body 11 and a screw thread 12a of the first cover member 12, which are screwed together, and the calcium phosphate cement powder material is passed through the second opening 11b of the container body 11. And a curing liquid, and then screwing a screw thread 11d of the container body 11 and a screw thread 13a of the second cover member 13 to form a hollow capsule-type kneading container as shown in FIG. It can be set to 10. The capsule-type kneading container 10 can be directly subjected to vibration kneading for kneading the powder material and the curing liquid.

At the time of the injection, the thread 11d of the container body 11 and the thread 13a of the second cover member 13 are screwed together, and the calcium phosphate cement powder is passed through the first opening 11a of the container body 11. After injecting the material and the curing liquid, the screw thread 11c of the container body 11 and the screw thread 12a of the first cover member 12 are screwed together to form a hollow capsule-type kneading mixture as shown in FIG. The container 10 can also be used.

FIG. 3 shows the kneading container 10 shown in FIGS.
FIG. 2 is a cross-sectional view of a calcium phosphate cement filling device 30 in which the container body 11 of FIG. 1 is converted into a filling device, and a kneaded material 31 of a calcium phosphate cement powder material and a hardening liquid is accommodated therein; The container body 11 from which the cover member 12 and the second cover member 13 are removed, an extrusion rod 32 having a pressing portion at a lower end for extruding the kneaded material 31, and a screw thread 11d at the lower end of the container body 11 are screwed. And a mounted tubular body 33.

The pushing rod 32 is inserted from the lower end opening of the cylindrical body 33 so as to be able to reciprocate along the inner peripheral surface of the cylindrical body 33 screwed to the cylindrical body 11 and the pressing force. As a result, the kneaded material 31 is moved to the first opening 11 of the container body 11.
It works to discharge from a. At this time, in order to fill the kneaded material 31, after the kneading container 10 shown in FIGS. 1 and 2 is vibrated, the first cover member 12 is turned downward, and the kneaded material 31 is placed in the first It is moved to the cover member 12 side, then the second cover member 13 is removed, and the cylinder 33 is screwed and attached.
After the push rod 32 is inserted into the cylindrical body 33, the first cover member 12 is removed and filled, so that contamination of impurities can be prevented.

FIG. 4 shows another embodiment of the filling device of the present invention in which the extruding rod 32 and the cylindrical body 33 in the filling device 30 shown in FIG. 3 are changed, and a needle member is attached to the first opening 11a of the container body 11. It is an example. In FIG. 4, reference numeral 40 denotes a filling device. The filling device 40 comprises a container body 11 for accommodating a kneaded material 31 therein, a needle member 41 screwed around the outer periphery of the first opening 11a, and a kneading device. A push rod 42 provided with a rotation support 42a at a lower end pressing portion for pushing out the object 31 and a screw thread 42b provided on an outer peripheral surface thereof is screwed and attached to a screw thread 11d at a lower end of the container body 11, and On the peripheral surface, a cylindrical body 43 having a thread 43a screwed with the thread 42b is provided.

In the filling device 40, an extruding rod 42
Is inserted and screwed along a screw thread 43a provided on the inner peripheral surface of the cylindrical body 43, and while the push rod 42 is rotated by the rotation support tool 42a, the inner peripheral surface of the cylindrical body 43 and the container body 11 is The kneaded material 31 can be discharged from the opening of the needle member 41 by moving the needle member 41 along. At this time, the shape of the needle member 41 can be arbitrarily changed according to the location where the kneaded material 31 is filled.

FIG. 5 shows the kneading container 1 shown in FIGS.
0 is another embodiment of the filling apparatus of the present invention using a container body having an enlarged first opening 11a and using compressed gas as an extruding means. In FIG. 5, reference numeral 50 denotes a filling device. The filling device 50 includes a container main body 51, a needle member 52 screwed to an upper end of the container main body 51, and a container main body 5.
1, a cylindrical body 53 screwed to the lower end of the cylinder body 1, a cylindrical extrusion member 54 having a spherical upper portion for discharging the kneaded material 31 from the opening of the needle member 52, and the container body 51 being compressed air with the extrusion member 54. And a compressed air injection device 55 for reciprocating up and down along the inner peripheral surface of the cylindrical body 53.
The compressed air injection device 55 includes an adapter 55a provided at a lower portion with a nozzle 55b connected to a compressor 55d and a pressure regulator 55c.
Is locked to the lower end portion of the cylindrical body 53, and a connection portion thereof is subjected to packing processing to hold compressed air.

The kneaded material 31 in the kneading container 51 is discharged from the opening of the needle member 52 by pressing the extruding member 54 with compressed air sent from the compressor 55d. At this time, the compressed air from the compressor 55d can change the pressure of the pushing member 54 by changing the pressure with the pressure regulator 55c,
The discharge amount and discharge speed of the kneaded material 31 can be arbitrarily changed.

The filling device shown in FIGS. 3 to 5, which uses a kneading container, can discharge and fill the kneaded material directly to a desired position without refilling the kneaded material in an open system.

[0027]

The kneading container of the present invention can easily and inexpensively knead a calcium phosphate cement powder and a hardening liquid by vibration at a high powder-liquid ratio without causing contamination of impurities. And the kneaded material can be directly supplied to the filling device without being transferred to another container.

The filling device according to the present invention is a filling device in which the kneading container is diverted, wherein the kneaded material obtained in the kneading container is easily mixed with no impurities. This is particularly useful in the step of filling dental calcium phosphate cement since it can be directly filled into the desired position.

[Brief description of the drawings]

FIG. 1 is an exploded sectional view showing an embodiment of the kneading container of the present invention.

FIG. 2 is a sectional view showing an embodiment of the kneading container of the present invention.

FIG. 3 is a cross-sectional view showing one embodiment of a filling device of the present invention in which the kneading container of FIG. 1 is diverted.

FIG. 4 is a sectional view showing another embodiment of the filling device of the present invention in which the kneading container of FIG. 1 is diverted.

FIG. 5 is a sectional view showing another embodiment of the filling device of the present invention.

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-2-102645 (JP, A) JP-A-2-228958 (JP, A) JP-A-50-5510 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) A61C 5/06 B28B 13/02 B28C 5/48

Claims (4)

(57) [Claims] 1. A container for kneading a calcium phosphate cement powder material and a hardening liquid by vibration, comprising: a container body; and the calcium phosphate cement powder material and a hardening liquid provided at one end of the container body. A first opening for discharging, a first cover member detachably sealed in the first opening, and a kneaded product of the powder material and the curing liquid provided at the other end of the container body extrusion and second opening for receiving the member, Bei example a second cover member for removably sealing the opening of the second order, the first cover member to the container body and
Inner circumference of both ends of the container when the second cover member is attached
A container for kneading calcium phosphate cement which can be diverted to a filling device characterized in that the surface has a curvature . 2. A container body containing a kneaded material obtained by vibrating a powdered material of calcium phosphate cement and a hardening liquid, and a first body provided at one end of the container body for discharging the kneaded material. A second opening for accommodating an extruding member for extruding the kneaded material provided at the other end of the container body through the first opening; and the kneaded material through the second opening. Extrusion means for pushing out the first cover, the first opening is removed after vibration kneading a first cover member for sealing the opening, and the second opening is a second cover for sealing the opening. Claim that the member is removed after mixing with vibration
Item 6. A calcium phosphate cement filling device, wherein the mixing container according to Item 1 is used . 3. A cylindrical body having a connection portion which can be detachably attached to the second opening and having a thread on an inner surface, and a thread which is screwed with a thread of the cylinder. On the peripheral surface, and provided with a rod that can reciprocate along the inner peripheral surface of the container body and the thread of the cylinder by rotating along the thread of the cylinder. 3. The calcium phosphate cement filling device according to claim 2. 4. The method according to claim 1, wherein the pushing means includes a pushing member capable of reciprocating along the inner peripheral surface of the container body, and a compressed fluid injecting means for reciprocating the pushing member with a compressed fluid. The calcium phosphate cement filling device according to claim 2, characterized in that: