Electric hot melting gutta-percha filling instrument

Abstract

The utility model discloses an electric hot melting gutta-percha filling instrument, which relates to a dental treatment instrument and comprises a main machine shell and a main machine front shell, the main machine front shell is fixed on the main machine shell in a threaded mode and communicated with the main machine shell, a heating cavity is formed in the main machine front shell, and a motor and a pushing assembly are arranged in the main machine shell. One end of the pushing assembly is fixed to a rotating shaft of the motor, the other end of the pushing assembly extends into the heating cavity, the motor rotates to drive the pushing assembly to stretch out and draw back in the heating cavity in a reciprocating mode, and the motor is controlled by a button switch. And the button switch is fixed on the host shell and is electrically connected with the motor. The gutta-percha injection device has the advantages of being more convenient and labor-saving to operate and more accurate in gutta-percha injection amount control.

Description

Technical Field

[0001] The utility model relates to a dental treatment instrument, in particular to an electric hot-melt gutta-percha filling instrument. Background Art

[0002] Root canal filling with hot-melt gutta-percha is an important part of the root canal treatment process. In the early stage of filling, the root canals of the teeth need to be filled with gutta-percha after being enlarged and cleaned. Only partially heated gutta-percha tips can be inserted into the root apex area, and then the tip of the heated tip of the gutta-percha cutter is used to cut and compact the gutta-percha tip so that the root apex is filled with gutta-percha, and then a gutta-percha filling instrument is used to fill the root canal with gutta-percha to prevent the root canal from being infected again.

[0003] The gutta-percha filling instrument can heat the gutta-percha into a molten state. When using the gutta-percha filling instrument, put the gutta-percha into the gutta-percha inlet, and then the push rod pushes the gutta-percha forward to push the gutta-percha out of the injection needle and inject it into the root canal of the tooth through the needle.

[0004] This method is called hot melt gutta-percha filling method. It can adapt to the shape of the root canal and can also fill the side branches. When the gutta-percha is squeezed out, the piston rod is pulled back, the gutta-percha needle is removed, and the gutta-percha is added to the heating chamber of the main unit again. The gutta-percha needle is reinstalled and tightened, and it can be reused.

[0005] During the use of the gutta-percha filling instrument, a solid gutta-percha stick must be loaded first, and then the instrument generates heat to heat it to a molten state, and the gutta-percha is squeezed out by a push rod to fill the root canal. There is usually a metal tube loaded with gutta-percha. Traditional gutta-percha filling instruments mostly use a gun-style manual pull wrench to squeeze out, which is laborious and inconvenient to operate. Utility Model Content

[0006] In order to overcome the deficiencies of the prior art, the utility model provides an electric hot-melt gutta-percha filling instrument.

[0007] The utility model is implemented by the following technical scheme: an electric hot-melt gutta-percha filling instrument, comprising a main body shell and a main body front shell, the main body front shell is threadedly fixed on the main body shell and communicated with the main body shell, a heating chamber is provided in the main body front shell, a motor and a pushing assembly are arranged in the main body shell, one end of the pushing assembly is fixed on the rotating shaft of the motor, and the other end of the pushing assembly extends into the heating chamber, the rotation of the motor drives the pushing assembly to reciprocate and extend in the heating chamber, and the motor is controlled by a button switch, and the button switch is fixed on the main body shell and electrically connected to the motor.

[0008] The pushing assembly includes a serrated screw and a pushing sleeve. A push rod is provided at the end of the pushing sleeve away from the serrated screw. The push rod is inserted into the heating chamber. The motor drives the serrated screw to rotate. A anti-rotation steel ball is provided between the pushing sleeve and the serrated screw. The rotation of the serrated screw drives the push rod to reciprocate in the heating chamber.

[0009] A heating resistor is wound on the outer wall of the heating chamber, and the heating resistor is wound on an end of the heating chamber away from the push rod.

[0010] A fixing ring is sleeved on the end of the pushing sleeve, and the push rod is inserted into the fixing ring and fixed to the end of the pushing sleeve through the fixing ring.

[0011] A thrust bearing is sleeved on the rotating shaft of the motor, and the end of the sawtooth screw passes through the thrust bearing and is fixedly connected to the rotating shaft of the motor.

[0012] Compared with the prior art, the motor of the utility model drives the serrated screw to rotate, and the serrated screw cannot move forward and backward. When rotating, the serrated spiral drives the push sleeve to move forward and backward. The serrated screw is inserted into the thrust bearing to prevent the serrated screw from being blocked. The steel ball is stuck in the anti-rotation groove of the fixed sleeve to prohibit the push sleeve from rotating. There is also a serrated spiral on the push sleeve, which is adapted to the serrated screw. When the serrated screw rotates, the push sleeve cannot rotate but can only move forward and backward. The fixed ring fixes the push rod on the push sleeve, and the screw rod moves forward and backward with the push sleeve. The heating wire is wrapped around the outside of the heating chamber, and the heating wire heats the heating chamber. The gutta-percha is in the heating chamber and is heated and softened. The push rod moves forward to inject the gutta-percha. The user only needs to press a button switch to inject the gutta-percha. The operation is more convenient and labor-saving, and the amount of gutta-percha injected can be controlled more accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] In the figure: 1. Main machine housing; 2. Main machine front housing; 3. Motor; 4. Thrust bearing; 5. Sawtooth screw; 6. Push sleeve; 7. Push rod; 8. Fixed ring; 9. Heating chamber; 10. Heating resistor; 11. Push button switch; 12. Anti-rotation steel ball. DETAILED DESCRIPTION

[0015] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0016] like Figure 1As shown, an electric hot melt gutta-percha filling instrument comprises a main body shell 1 and a main body front shell 2, the main body front shell 2 is threadedly fixed on the main body shell 1 and communicated with the main body shell 1, a heating chamber 9 is provided in the main body front shell 2, a heating resistor is wound on the outer wall of the heating chamber 9, and the heating resistor is wound at one end of the heating chamber 9 away from the push rod 7. A motor 3 and a push assembly are arranged in the main body shell 1, one end of the push assembly is fixed on the rotating shaft of the motor 3, and the other end of the push assembly extends into the heating chamber 9, the motor 3 rotates to drive the push assembly to reciprocate in the heating chamber 9, and the motor 3 is controlled by a button switch 11, which is fixed on the main body shell 1 and electrically connected to the motor 3. When pushing, the motor 3 is controlled by the button switch 11 as a driving source, and the user only needs to press the button switch 11 to inject the gutta-percha, which is more convenient and labor-saving to operate, and the amount of gutta-percha injection can be controlled more accurately.

[0017] The pushing assembly includes a sawtooth screw 5 and a pushing sleeve 6. A push rod 7 is provided at the end of the pushing sleeve 6 facing away from the sawtooth screw 5. A fixing ring 8 is provided at the end of the pushing sleeve 6. The push rod 7 is inserted into the fixing ring 8 and fixed to the end of the pushing sleeve 6 through the fixing ring 8. The push rod 7 is inserted into the heating chamber 9. The motor 3 drives the sawtooth screw 5 to rotate. A stop steel ball 12 is provided between the pushing sleeve 6 and the sawtooth screw 5. The rotation of the sawtooth screw 5 drives the push rod 7 to reciprocate in the heating chamber 9. The motor 3 drives the sawtooth screw to rotate. The sawtooth screw cannot move forward and backward. When rotating, the sawtooth spiral drives the pushing sleeve 6 to move forward and backward. The steel ball is stuck in the stop groove of the fixing sleeve, prohibiting the pushing sleeve 6 from rotating. There is also a sawtooth spiral on the pushing sleeve 6, which is adapted to the sawtooth screw 5. When the sawtooth screw 5 rotates, the pushing sleeve 6 cannot rotate and can only move forward and backward. The fixing ring 8 fixes the push rod 7 on the pushing sleeve 6, and the screw rod moves back and forth with the pushing sleeve 6. The heating wire is wrapped around the heating chamber 9, and the heating wire heats the heating chamber 9. The gutta-percha in the heating chamber 9 is heated and softened. The push rod 7 moves forward to inject the gutta-percha. The user only needs to press the button switch 11 to inject the gutta-percha. The operation is more convenient and labor-saving, and the amount of gutta-percha injected can be controlled more accurately.

[0018] A thrust bearing 4 is sleeved on the rotating shaft of the motor 3, and the end of the sawtooth screw 5 passes through the thrust bearing 4 and is fixedly connected to the rotating shaft of the motor 3. The sawtooth screw is inserted into the thrust bearing 4 to prevent the sawtooth screw from being blocked before and after.

[0019] The motor 3 of the utility model drives the sawtooth screw to rotate, and the sawtooth screw cannot move forward and backward. When rotating, the sawtooth spiral drives the push sleeve 6 to move forward and backward. The sawtooth screw is inserted into the thrust bearing 4 to prevent the sawtooth screw from being blocked. The steel ball is stuck in the anti-rotation groove of the fixed sleeve, prohibiting the push sleeve 6 from rotating. There is also a sawtooth spiral on the push sleeve 6, which is adapted to the sawtooth screw 5. When the sawtooth screw 5 rotates, the push sleeve 6 cannot rotate and can only move forward and backward. The fixed ring 8 fixes the push rod 7 on the push sleeve 6, and the screw moves forward and backward with the push sleeve 6. The heating wire is wrapped around the outside of the heating chamber 9, and the heating wire heats the heating chamber 9. The gutta-percha is in the heating chamber 9 and is heated and softened. The push rod 7 moves forward to inject the gutta-percha. The user only needs to press the button switch 11 to inject the gutta-percha. The operation is more convenient and labor-saving, and the amount of gutta-percha injected can be controlled more accurately.

[0020] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. An electric hot melt gutta-percha filling instrument, comprising a main body shell and a main body front shell, wherein the main body front shell is threadedly fixed to the main body shell and communicated with the main body shell, and a heating chamber is provided in the main body front shell, characterized in that: A motor and a pushing assembly are provided in the main housing, one end of the pushing assembly is fixed on the rotating shaft of the motor, and the other end of the pushing assembly extends into the heating chamber. The rotation of the motor drives the pushing assembly to reciprocate and extend in the heating chamber. The motor is controlled by a button switch, which is fixed on the main housing and electrically connected to the motor.

2. The electric hot melt gutta-percha filling instrument according to claim 1, characterized in that: The pushing assembly includes a serrated screw and a pushing sleeve. A push rod is provided at the end of the pushing sleeve away from the serrated screw. The push rod is inserted into the heating chamber. The motor drives the serrated screw to rotate. A anti-rotation steel ball is provided between the pushing sleeve and the serrated screw. The rotation of the serrated screw drives the push rod to reciprocate in the heating chamber.

3. The electric hot melt gutta-percha filling instrument according to claim 2, characterized in that: A heating resistor is wound on the outer wall of the heating chamber, and the heating resistor is wound on an end of the heating chamber away from the push rod.

4. The electric hot melt gutta-percha filling instrument according to claim 2, characterized in that: A fixing ring is sleeved on the end of the pushing sleeve, and the push rod is inserted into the fixing ring and fixed to the end of the pushing sleeve through the fixing ring.

5. The electric hot melt gutta-percha filling instrument according to claim 2, characterized in that: A thrust bearing is sleeved on the rotating shaft of the motor, and the end of the sawtooth screw passes through the thrust bearing and is fixedly connected to the rotating shaft of the motor.

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