CN215875015U

CN215875015U - Gutta-percha fuse heating needle with thermocouple

Info

Publication number: CN215875015U
Application number: CN202121610022.1U
Authority: CN
Inventors: 张磊
Original assignee: Shanwei Baofeng Medical Instrument Co ltd
Current assignee: Shanwei Baofeng Medical Instrument Co ltd
Priority date: 2021-07-15
Filing date: 2021-07-15
Publication date: 2022-02-22
Anticipated expiration: 2031-07-15

Abstract

The utility model relates to a gutta-percha fuse heating needle with a thermocouple, which comprises a heating needle and the thermocouple, wherein the heating needle is connected with the thermocouple in series, and the heating needle is driven by adopting intermittent PWM (pulse-width modulation) waveform. The thermocouple is arranged, two conductors made of different materials form a loop, and electromotive force is generated when temperature difference exists between two ends. The intermittent PWM fluctuation is set, so that the heating needle can work intermittently, specifically, the thermocouple is positioned at the front end of the heating needle and is connected with the heating needle in series, and when the heating needle is electrified, the heating needle can generate a large amount of heat, so that the temperature is raised; when the power is cut off, because the temperature is not completely dissipated, the thermocouple can generate electromotive force, the temperature of the heating needle can be obtained by collecting the electromotive force, and the temperature of the heating needle is detected while heating is realized. The heating needle of the gutta-percha fuse with the thermocouple has the advantages of simultaneous temperature measurement and heating, accurate temperature control, good cutting quality and high efficiency of hot gutta-percha, and the like.

Description

Gutta-percha fuse heating needle with thermocouple

Technical Field

The utility model relates to the technical field of heating needles for oral root canal therapy, in particular to a gutta-percha fuse heating needle with a thermocouple.

Background

At present, be used for oral cavity root canal therapy heating needle, it only plays the effect of generating heat, during the use, need adjust the estimated value in advance, then be used for stretching into the oral cavity and generate heat the cutting off to the hot gutta-percha of oral cavity root canal, realize the treatment to the oral cavity root canal. Adopt this kind of needle that generates heat to cut off hot gutta-percha of oral cavity root canal, it can not accomplish accurate accuse temperature, and then probably causes the needle that generates heat high temperature to cause the damage to the oral cavity root canal, perhaps the needle temperature that generates heat crosses lowly and can't cut off hot gutta-percha, needs the repeated operation, and not only inefficiency increases moreover and receives the fear of doctor, is unfavorable for using widely.

SUMMERY OF THE UTILITY MODEL

The utility model provides a gutta-percha fuse heating needle with a thermocouple, which can simultaneously carry out temperature measurement and heating, realize accurate temperature control and ensure high-quality and high-efficiency completion of thermal gutta-percha cutting.

In order to achieve the above purpose, the following technical solutions are provided.

The utility model provides a take gutta-percha fuse heating needle of thermocouple, includes heating needle and thermocouple, heating needle and thermocouple series connection, the drive of heating needle adopts intermittent type nature PWM waveform drive. The heating needle is connected with the thermocouple in series, and the intermittent PWM waveform drive is adopted to control the temperature of the heating needle, so that the heating needle works in a power-on state to generate heat, and the heating needle heats to cut off hot tooth glue; the needle that generates heat is out of work when intermittent type stage, and through the data of gathering the thermocouple this moment, the cutting of the needle that generates heat can be known to the comparison thermocouple graduation table and glue the temperature, realizes carrying out the temperature measurement to the needle that generates heat at the needle working gap that generates heat, makes the needle that generates heat measure temperature and heat and go on simultaneously, has effectively avoided adjusting the inaccurate problem of valuation in advance among the prior art, can realize accurate accuse temperature, ensures that high-quality, high-efficient completion hot gutta-percha cuts off.

Further, the heating needle includes the core that generates heat, the one end of the core that generates heat is connected with the heating needle positive pole, the other end of the core that generates heat is equipped with the thermocouple, the positive level of thermocouple, the core that generates heat and the heating needle is linear arrangement, and the positive level outside of thermocouple, the core that generates heat and the heating needle is equipped with the heating needle outer wall, the heating needle outer wall is the heating needle negative pole. Wherein, the core that generates heat is heating element, and the needle negative pole that generates heat is used for the circular telegram of the core that generates heat with the needle negative pole that generates heat, the needle that generates heat is anodal all to adopt low resistance conductive metal to make with the needle negative pole that generates heat, makes the needle that generates heat when circular telegram is worked, because the resistance of the core that generates heat is far more than other positions, can know according to joule law, the heat of the needle that generates heat concentrates on the core region that generates heat, conducts again for the core front end portion and the thermocouple that generate heat, and then learns the temperature of the core that generates heat through the thermocouple graduation table at the core working gap that generates heat, realizes that the temperature measurement and the heating of the needle go on in step.

Furthermore, the positive electrode of the heating needle is made of copper wire or silver wire low-resistance conductive metal or metal material capable of forming a thermocouple, so that the positive electrode of the heating needle is only used as a conduction end for conduction, and meanwhile, the heat of the positive electrode of the heating needle is ensured to be low, and the operation safety is ensured.

Furthermore, the insulating layer is arranged outside the heating needle anode, and the insulating layer wraps the heating needle anode inside the insulating layer, so that the safety of the heating needle anode outside the oral cavity during operation is further ensured.

Furthermore, the heating core is a heating wire, and the heating core can be matched with the corresponding heating wire according to the temperature requirement, so that the heat of the heating needle can be ensured to quickly and accurately cut off the hot gutta-percha.

Furthermore, after the power is switched on, the temperature of the heating core is up to 150-250 ℃, and the heating area is 4-6 mm at the front end of the heating core and is used for meeting the requirement of thermal fusion of the gutta-percha.

Furthermore, the heating wire is made of nickel-chromium or nickel-aluminum heat-resistant metal, and is made of low-resistance conductive material, so that the operation safety is ensured while the conductivity is ensured.

Furthermore, the outer wall of the heating needle is made of copper or iron or a metal material capable of forming a thermocouple, and the heating needle is made of a low-resistance conductive material, so that the operation safety is ensured while the conductivity is ensured.

Furthermore, the intermittent PWM waveform is provided with a power-on stage and an acquisition stage, the power-on stage and the acquisition stage are sequentially distributed at intervals, the heating core is driven to work within the time period of the power-on stage to generate heat, when the acquisition stage is driven, data of the thermocouple are acquired within the time period of the acquisition stage, and the temperature of the heating core is displayed through the thermocouple graduation meter. The intermittent PWM waveform driving increases or decreases the voltage at two ends of the heating needle by adjusting the duty ratio, thereby controlling the current flowing through the heating needle to realize intermittent driving.

Furthermore, the time of the acquisition stage is greatly shorter than that of the electrifying stage, so that the influence on the heating efficiency and the accuracy of temperature control due to overlong acquisition time is avoided.

Compared with the prior art, the gutta-percha fuse heating needle with the thermocouple has the following beneficial effects:

the temperature control is accurate, the temperature control device comprises a heating needle and a thermocouple, the thermocouple is connected with the heating needle in series, and the temperature of the heating needle is controlled through intermittent PWM wave driving, so that the temperature measurement and heating of the heating needle are carried out simultaneously, the accurate temperature control can be realized, and the high-quality and high-efficiency cutting-off of the hot gutta-percha is ensured;

secondly, the safety performance is good, the heating area is 4 mm-6 mm at the front end of the heating core, scalding is prevented, and the operation safety is ensured;

thirdly, the efficiency is high, the heating area is 4 mm-6 mm at the front end of the heating core, the heating core rapidly heats up, and the hot gutta-percha cutting efficiency is high.

Drawings

FIG. 1 is a side view of a thermocouple teether fuse heating pin of the present invention;

FIG. 2 is a diagram of the intermittent PWM waveform driving of the heating pin of the thermocouple dental cement fuse of the present invention.

Detailed Description

The heating pin of the thermocouple-equipped teether fuse of the present invention will be described in further detail with reference to the following embodiments and accompanying drawings.

Referring to fig. 1 and 2, a non-limiting embodiment of the present invention, a heating pin for a gutta-percha fuse with a thermocouple 20, includes a heating pin 10 and a thermocouple 20, the heating pin 10 is connected in series with the thermocouple 20, and the heating pin 10 is driven by an intermittent PWM waveform 30. According to the principle of the thermocouple 20, two conductors made of different materials form a loop, and electromotive force is generated when there is a temperature difference between the two ends. In the embodiment, due to the fact that the thermocouple 20 is connected in series with the heating needle 10, two poles of the thermocouple 20 and two poles of the heating needle 10 are shared, and the feedback value of the thermocouple 20 cannot be acquired while heating is performed, the temperature control of the heating needle 10 driven by intermittent PWM fluctuation is set, namely, the driving of the heating needle 10 is skillfully processed. The intermittent PWM fluctuation is set, so that the heating needle 10 can work intermittently, specifically, the thermocouple 20 is positioned at the front end of the heating needle 10 and is connected with the heating needle in series, when the heating needle 10 is electrified, a large amount of heat can be generated by the heating needle 10, and therefore the temperature is increased; when the power is cut off, the thermocouple 20 generates electromotive force because the temperature is not completely dissipated, and the temperature of the heating needle 10 can be obtained by collecting the electromotive force, so that the temperature of the heating needle 10 can be detected while heating is realized. According to the heating needle 10, the heating needle 10 and the thermocouple 20 are connected in series, and the intermittent PWM waveform 30 is adopted to drive the heating needle 10 to control the temperature, so that the heating needle 10 works in a power-on state to generate heat, and the heating needle 10 generates heat to cut off hot gutta-percha; heating pin 10 is not worked when intermittent type stage heating pin 10, this moment through gathering thermocouple 20's data, the cutting gluey temperature of heating pin 10 can be known to the 20 graduation table of comparison thermocouple, the realization is carried out the temperature measurement to heating pin 10 at heating pin 10 working gap, make heating pin 10 temperature measurement and heating go on simultaneously, effectively avoided adjusting the inaccurate problem of valuation in advance among the prior art, can realize accurate accuse temperature, ensure the high quality, the high-efficient cutting off of accomplishing hot tooth glue.

Referring to fig. 1, according to a non-limiting embodiment of the present invention, the heating pin 10 includes a heating core 11, one end of the heating core 11 is connected to a positive electrode of the heating pin 10, the other end of the heating core 11 is provided with a thermocouple 20, the heating core 11 and the heating pin positive stage 12 are linearly arranged, outer walls of the heating pin are disposed outside the thermocouple 20, the heating core 11 and the heating pin positive stage 12, and the outer wall of the heating pin is a heating pin negative electrode 13. The heating core 11 is a heating element, the anode of the heating needle 10 and the cathode 13 of the heating needle are used for electrifying the heating core 11, the anode of the heating needle 10 and the cathode 13 of the heating needle are both made of low-resistance conductive metal, so that when the heating needle 10 works in an electrifying mode, as the resistance of the heating core 11 is far larger than that of other parts, according to the joule law, the heat of the heating needle 10 is concentrated in the area of the heating core 11 and then conducted to the front end part of the heating core 11 and the thermocouple 20, the temperature of the heating core 11 is further known through a thermocouple 20 graduation meter at the working gap of the heating core 11, and the synchronous temperature measurement and heating of the heating needle 10 are realized.

Referring to fig. 1, according to a non-limiting embodiment of the present invention, the positive electrode of the heating pin 10 is made of a conductive metal with low resistance, such as a copper wire or a silver wire, or a metal material that can constitute the thermocouple 20, so that the positive electrode of the heating pin 10 is only used as a conducting end for conducting, and at the same time, the heat of the positive electrode of the heating pin 10 is ensured to be low, thereby ensuring the operation safety.

Referring to fig. 1 and 2, according to a non-limiting embodiment of the present invention, an insulating layer 14 is disposed outside the positive electrode of the heating needle 10, and the insulating layer 14 is disposed to wrap the positive electrode of the heating needle 10 inside the insulating layer 14, so as to further ensure the safety of the positive electrode of the heating needle 10 located outside the oral cavity during operation.

Referring to fig. 1 and 2, according to a non-limiting embodiment of the present invention, the heating core 11 is a heating wire, and the heating core 11 can be matched with a corresponding heating wire according to a temperature requirement, so as to ensure that the heat of the heating needle 10 can rapidly and accurately cut off the hot gutta-percha.

Referring to fig. 1 and 2, in a non-limiting embodiment of the present invention, after power is applied, the temperature of the heat generating core 11 is as high as 150 to 250 ℃, which is used for satisfying the thermal fuse of the gutta-percha.

Referring to fig. 1 and 2, in a non-limiting embodiment of the present invention, the heating wire is made of nickel-chromium or nickel-aluminum heat-resistant metal, and is made of low-resistance conductive material, so that the operation safety is ensured while the conductivity is ensured.

Referring to fig. 1 and 2, in a non-limiting embodiment of the present invention, the outer wall of the heating pin is made of copper or iron or a metal material capable of forming a thermocouple 20, and the heating pin is made of a low-resistance conductive material, so that the operation safety is ensured while the electrical conductivity is ensured.

Referring to fig. 1 and 2, in a non-limiting embodiment of the present invention, the intermittent PWM waveform 30 is driven as shown in fig. 2, and the intermittent PWM waveform 30 is provided with a power-on phase and a collection phase, which are sequentially distributed at intervals, where a region a and a region C are the power-on phase, and a region B and a region D are the collection phase, and only one segment of the driving waveform is shown in fig. 2. The during operation, increase or reduce the voltage at heating needle 10 both ends through adjusting the duty cycle to control the electric current of through-flow heater, drive the heater work in the regional corresponding time quantum of circular telegram stage A and C, produce the heat, when driving to the collection stage, when gathering in the regional corresponding time quantum of collection stage B and D, the heater is out of work this moment, because the residual temperature of heater, through gathering thermocouple 20's data, the temperature at this moment of heater can then be known to comparison thermocouple 20 minutes table, and then acquire the temperature that measures heating needle 10. The intermittent PWM waveform 30 drives to increase or decrease the voltage across the heating pin 10 by adjusting the duty ratio, thereby controlling the current flowing through the heating pin 10 to achieve intermittent driving.

Referring to fig. 1 and 2, in a non-limiting embodiment of the present invention, the time of the acquisition phase is substantially shorter than the time of the power-on phase, so as to avoid the acquisition time from being too long, which affects the heating efficiency and the accuracy of temperature control.

In the description of the present invention, it is to be understood that terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, which indicate orientations or positional relationships, are used based on the orientations or positional relationships shown in the drawings only for the convenience of describing the present invention and for the simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The above embodiments are only specific embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications are possible without departing from the inventive concept, and such obvious alternatives fall within the scope of the utility model.

Claims

1. The utility model provides a take gutta-percha fuse heating needle of thermocouple which characterized in that: including heating needle and thermocouple, heating needle and thermocouple series connection, the drive of heating needle adopts intermittent type nature PWM waveform drive, the needle that generates heat is including the core that generates heat, the one end of the core that generates heat is connected with the needle positive pole that generates heat, the other end of the core that generates heat is equipped with the thermocouple, the core that generates heat and the needle positive level that generates heat are linear arrangement, and the thermocouple, the core that generates heat and the needle positive level outside that generates heat are equipped with the needle outer wall that generates heat, the needle outer wall that generates heat is the needle negative pole that generates heat.

2. A tooth paste fuse heating pin with thermocouple according to claim 1, characterized in that, the heating pin positive pole is made of copper wire or silver wire low resistance conductive metal or metal material which can be used to form thermocouple.

3. A tooth paste fuse heating pin with thermocouple according to claim 2, characterized in that the positive electrode of said heating pin is externally provided with an insulating layer.

4. The gutta-percha fuse heating needle with a thermocouple according to any one of claims 1 to 3, wherein said heating core is a heating wire or a heating wire winding.

5. The heating needle of the teether fuse with the thermocouple as claimed in claim 4, wherein the temperature of the heating core is up to 150-250 ℃ after being electrified, and the heating area is 4-6 mm at the front end of the heating core for satisfying the thermal fusing of teether.

6. The gutta-percha fuse heating pin with a thermocouple as in claim 5, wherein said heating wire is made of nichrome or nickel aluminum heat-resistant metal.

7. A tooth paste fuse heating pin with thermocouple according to claim 6, characterized in that, the outer wall of the heating pin is made of copper or iron or metal material which can constitute thermocouple.

8. The heating needle of the gutta-percha fuse with the thermocouple as in claim 7, wherein said intermittent PWM waveform is provided with a power-on phase and a collection phase, said power-on phase and collection phase are sequentially distributed at intervals, said heating core is driven to work in said power-on phase, and generates heat, when said heating core is driven to the collection phase, the data of the thermocouple is collected in said collection phase, and the temperature of the heating core is displayed through a thermocouple graduation meter.

9. The teething fuse heating pin with thermocouple of claim 8, wherein the time of the acquisition phase is substantially less than the time of the power-on phase.