CN103027757A - Micro electric field stimulation healing device for minitype dental implant - Google Patents

Abstract

The invention discloses a micro-electric field stimulation healing device for a miniature dental implant. The device has a lower surface matching the top surface of the dental implant and a protruding contact part. A metal retaining bolt passes through a circular opening on the healing device. The hole is fastened in the dental implant, and the dental resin is filled on the retaining bolt, so that the retaining bolt is isolated from the oral environment and integrated with the rest of the healing device; the insulating protective layer isolates the electronic components from the oral environment, The device also includes: a micro-voltage constant-voltage circuit module or a micro-current constant-current circuit module; the negative electrode is arranged on the lower surface of the joint between the healing device and the dental implant, and outside the screw rod of the fixing bolt above the lower surface of the healing device On the surface; the anode electrode is arranged on the protruding contact part, and the cathode electrode and the anode electrode are respectively connected with the insulating protection layer. The healing device is small in size, can be conveniently installed on the dental implant, has good fixation, can be used for a long time, and can significantly shorten the healing period of the dental implant.

Description

Miniature Dental Implant Microelectric Field Stimulation Healing Device

technical field

The invention relates to a dental implant healing device, in particular to a micro electric field stimulating healing device for a miniature dental implant.

Background technique

In the 1960s, Professor Brannemark, a Swedish scholar, discovered that titanium metal and the surface microstructure of bone tissue can be closely combined to form "osseointegration". The interface theory of osseointegration laid the foundation of modern dental implantology. The osseointegration interface is the basis to ensure that the bone tissue around the implant can maintain stability and bear functional load for a long time.

Successful healing and stabilization of the interface between the mucosa and implant are also key factors for implant success. Dental implants penetrate the mucosal tissue to expose the oral cavity, and a good connective tissue seal needs to be established to provide a barrier for the implant to prevent oral bacteria and their toxins from entering the internal environment. The mucosal tissue around implants is similar to the gingival tissue around natural teeth, but this layer of relatively avascular soft tissue has weaker defense mechanisms than the gingiva of natural teeth.

Implant restoration is a hotspot in oral clinical and oral medicine research at present, and improving the healing level of gingival tissue and bone tissue is the task we are facing. Bone marrow mesenchymal stem cells migrate to the implant-bone interface and deposit bone. The migration of epidermal and periodontal tissue stem cells to the implant-gingiva interface and the formation of a bond between the implant and the gingival epithelium is the key to the success of the implant.

The method of direct current stimulation has been widely used in promoting fracture healing, trauma treatment, and nerve growth.

The treatment instruments related to bone healing described in existing patents, such as those disclosed in Chinese patent applications CN201120200642.8, CN90100934.2, and CN200610061732.7, apply direct current stimulation to promote fracture healing. However, these instruments all stimulate the bone through electric current to promote its wound healing. At present, there is no instrument that uses current and voltage stimulation to promote the healing of dental implants, and these instruments either have a bulky computer host or have a capacitor pole. The board is inconvenient to carry and has limitations.

To date, there have been no reports of the application of electrical stimulation to promote healing of tiny dental implants in the oral cavity.

Contents of the invention

In order to solve the above-mentioned problems, the inventors have carried out intensive research, and found that electrical stimulation of dental implants through constant micro-current or micro-voltage can effectively promote the healing of the implants and shorten the healing time. The upper surface of the dental implant is in contact with the cathode. At the same time, the metal retaining bolt in contact with the cathode fixes the cathode on the dental implant. The protruding part is provided with an anode that is in contact with other parts of the oral cavity, such as soft tissue. Through the cathode and the anode provide electrical stimulation to the dental implant and other parts of the oral cavity respectively. The retaining bolt is sealed by dental resin and insulated from other parts of the oral cavity by an insulating protective layer. The resulting device can not only realize the rapid healing of the dental implant, but also the device The volume is small, the installation and disassembly on the dental implant are convenient, the use is convenient, and the cleaning is easy, thereby completing the present invention.

The object of the present invention is to provide the following aspects:

(1) A micro-electric field stimulation healing device for a miniature dental implant, characterized in that the device has a lower surface matching the top surface of the dental implant, and a protruding contact part (2), and a metal retaining bolt (1) Through the circular through hole (1a) opened on the healing device, it is fastened in the dental implant, and the dental resin (7) is filled on the retaining bolt, so that the retaining bolt is isolated from the oral environment and connected to the healing The rest of the device is integrated; an insulating protective layer is placed on the outer surface of the healing device to isolate the electronic components from the oral environment;

This healing device consists of:

power supply,

The micro-voltage constant voltage circuit module is used to provide a constant voltage for the electrodes,

The micro current constant current circuit module is used to provide a constant current for the electrode,

The electrodes, including the cathode electrode (6) and the anode electrode (5), are used to derive the current or voltage output by the micro-current constant current circuit or the micro-voltage constant voltage circuit and provide them to dental implants and other parts of the human oral cavity respectively,

Among them, the micro-voltage constant-voltage circuit module and the micro-current constant-current circuit module do not coexist, and one of them exists, that is to say, the micro-electric field stimulation healing device for the micro-dental implant either includes a micro-voltage constant-voltage circuit module or a micro-current constant-current circuit module. circuit module;

The negative electrode (6) is set on the lower surface where the healing device meets the dental implant, and on the outer surface of the screw rod of the retaining bolt (1) above the lower surface of the healing device, and the positive electrode (5) is set on the protruding contact On the upper part, the cathode electrode (6) and the anode electrode (5) are respectively connected with the insulating protective layer (3).

(2) The miniature dental implant microelectric field stimulation healing device according to the above aspect, characterized in that,

The microvoltage constant voltage circuit module includes a power supply module and a constant voltage control module, the power supply module provides stable power for the microvoltage constant voltage circuit module, and the constant voltage control module is used to convert the power provided by the power supply module into a constant voltage output to the electrodes .

(3) The miniature dental implant microelectric field stimulation healing device according to the above aspect, characterized in that,

The microcurrent constant current circuit module includes a power supply module and a constant current control module, the power supply module provides a stable power supply for the microcurrent constant current circuit module, and the constant current control module is used to convert the power provided by the power supply module into a constant current output to the electrode .

(4) The miniature dental implant micro-electric field stimulation healing device according to the above aspect, characterized in that,

The upper surface of the dental resin (7) is at the same height as the upper surface of the rest of the healing device.

(5) The micro-electric field stimulation healing device for the miniature dental implant according to the above aspect, characterized in that,

The insulating protective layer is made of porcelain, resin, plastics or other polymer insulating materials.

(6) The micro-electric field stimulation healing device for the miniature dental implant according to the above aspect, characterized in that,

The protruding contact part has a horizontal protruding part and a longitudinal contact part, the surface is covered with an insulating protective layer, and the inside is a power supply, a micro-voltage constant-voltage circuit module or a micro-current constant-current circuit module,

The lateral protruding part maintains a certain gap with the gums, which is convenient for local cleaning and sanitation.

(7) The micro-electric field stimulation healing device for the miniature dental implant according to the above aspect, characterized in that,

The positive electrode (5) is arranged at the bottom end of the contact part.

(8) The miniature dental implant microelectric field stimulation healing device according to the above aspect, characterized in that,

The positive electrode is in contact with the gums or other soft tissues in the mouth.

(9) The miniature dental implant microelectric field stimulation healing device according to the above aspect, characterized in that,

The negative electrode abuts against the screw rod of the retaining bolt and the dental implant respectively.

(10) The miniature dental implant microelectric field stimulation healing device according to the above aspect, characterized in that,

The micro-voltage constant voltage circuit module provides a voltage below 5V;

The micro current constant current circuit module provides a current of 10-200μA.

The miniature dental implant micro-electric field stimulation healing device provided by the present invention is very small in size, can be conveniently installed on the dental implant, does not cause inconvenience to the patient's oral environment, does not affect the patient's normal life, and can provide electric power for the dental implant for a long time. Stimulates fast healing of dental implants and is easy to clean for long-term use. After the patient's dental implant is healed, the sealed dental resin is removed, and the entire healing device can be removed by removing the retaining bolt, which is very convenient to disassemble.

Description of drawings

Fig. 1 shows a schematic top view of a miniature dental implant micro-electric field stimulation healing device according to a preferred embodiment of the present invention;

Fig. 2 shows the schematic diagram of the sectional structure of the miniature dental implant microelectric field stimulation healing device according to the preferred embodiment of the present invention;

Fig. 3 shows the schematic cross-sectional structure diagram of the miniature dental implant micro-electric field stimulation healing device according to the preferred embodiment of the present invention;

Fig. 4 shows the schematic diagram of the installation structure of the miniature dental implant micro-electric field stimulation healing device according to the preferred embodiment of the present invention;

Fig. 5 shows a schematic structural view of a power supply module of a miniature dental implant micro-electric field stimulation healing device according to a preferred embodiment of the present invention;

Fig. 6 shows a schematic structural view of the constant voltage control module of the miniature dental implant microelectric field stimulation healing device according to a preferred embodiment of the present invention;

Fig. 7 shows a schematic circuit diagram of a micro-current constant-voltage control module of a micro-electric field stimulation healing device for a micro-dental implant according to a preferred embodiment of the present invention.

Explanation of reference numbers:

1-retaining bolt

1a-through hole

2- protruding contact part

3- Insulation protective layer

4- Micro battery

5- Anode

6- Cathode

7- Dental resin

8- Dental Implants

21-DC Converter

22-DC Converter

23-Controller

23a-Analog-to-digital converter

23b-Digital to Analog Converter

24-op amp bank

24a - Operational amplifier

24b-op amp

24c-resistor

Detailed ways

The following describes the present invention in detail, and the features and advantages of the present invention will become more clear and definite along with these descriptions.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or better than other embodiments. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

The inventors have found through research that after the tissue is damaged, a stable endogenous electric field (about 100-200mv) is formed between the damaged tissue and the undamaged tissue, and the electric field lasts for a long time (several days to several weeks). Distributed in the space of a few millimeters around the damaged tissue, the closer the distance to the damaged tissue, the more obvious the electric field; at negative potentials, new bone deposition can always be generated constantly, while at positive potentials, bone resorption often occurs, which reveals that the mobile The significance of the electrical charge of the bit to the bone growth process. In addition, studies on skin stem cells have also shown that under the action of a micro-electric field, epidermal stem cells move toward the cathode of the electric field. Therefore, the inventors believe that applying an external electric field to the dental implant can effectively increase the migration of stem cells, promote the healing of tissues around the implant and the combination with the implant, improve the healing of the implant, and increase the success rate.

The invention discloses a miniature dental implant micro-electric field stimulating healing device that can promote the healing of the dental implant. Using the device facilitates the healing of the dental implant and improves the success rate of clinical implant restoration.

In a preferred embodiment according to the present invention, as shown in Fig. 1-4, provide a kind of miniature dental implant micro-electric field stimulation healing device, this device has the lower surface that coincides with the dental implant top surface, and protruding The contact part 2, the metal retaining bolt 1 passes through the circular through hole 1a opened on the healing device, and is fastened in the dental implant, and the dental resin 7 is filled on the retaining bolt so that the dental resin 7 can heal with the healing device. The rest of the device is integrated;

This healing device consists of:

power supply,

The micro-voltage constant voltage circuit module is used to provide a constant voltage for the electrodes,

The micro current constant current circuit module is used to provide a constant current for the electrode,

The electrodes, including the negative electrode 6 and the positive electrode 5, are used to derive the current or voltage output by the micro-current constant current circuit or the micro-voltage constant voltage circuit and provide them to dental implants and other parts of the human oral cavity respectively,

The insulating protective layer 3 is arranged on the outer surface of the healing device, so that the electronic components are isolated from the oral environment;

Among them, the micro-voltage constant-voltage circuit module and the micro-current constant-current circuit module do not coexist, and one of them exists, that is to say, the micro-electric field stimulation healing device for the micro-dental implant either includes a micro-voltage constant-voltage circuit module or a micro-current constant-current circuit module. circuit module;

The negative electrode 6 is arranged on the lower surface of the junction between the healing device and the dental implant, and at the outer surface of the screw of the fixing bolt 1 above the lower surface of the healing device, the positive electrode 5 is arranged on the protruding contact part, and the negative electrode 6 And the anode electrode 5 is connected with the insulating protection layer 3 respectively.

Among them, in order to install and fix the dental implant conveniently, the lower surface of the miniature dental implant provided by the present invention coincides with the upper surface of the dental implant, so that there is no gap between the two after installation, which can prevent foreign matter from invading and causing dental implants. Difficulty healing between implant and surrounding tissue.

In a preferred embodiment according to the present invention, the miniature dental implant microelectric field stimulation healing device includes a barrel-shaped main body part and a protruding contact part 2 , as shown in FIGS. 1 , 2 and 3 . Among them, the main part is used to install and fix the dental implant, and accommodate circuit modules such as micro-voltage constant-voltage circuit modules or micro-current constant-current circuit modules; the protruding contact part is used to contact other parts of the oral cavity such as soft tissues.

In the micro-electric field stimulated healing device according to the present invention, the healing device is fixed to the upper surface of the dental implant through the retaining bolt 1, so that the healing device can be stably fastened to the dental implant during the healing process of the dental implant surface, to avoid displacement of the healing device during treatment.

Metal retaining bolts are used as the retaining bolts, and the metal is not particularly limited, but titanium or titanium alloy retaining bolts are preferably used in order to enhance biocompatibility.

In addition to the role of fixing the healing device, the retaining bolt also plays the role of conducting electricity. Since the retaining bolt is in contact with both the dental implant and the cathode (cathode), the electrical signal output by the cathode can be further introduced into the dental implant. body, especially when the negative electrode is in poor contact with the dental implant, as shown in Figure 4.

In the present invention, the dental resin prevents substances such as saliva in the oral cavity from corroding the retaining bolt.

In a preferred embodiment according to the present invention, the upper surface of the dental resin 7 is at the same height as the upper surface of the rest of the healing device, so as to prevent damage to the patient's oral cavity.

In the micro-electric field stimulation healing device of the present invention, the insulating protective layer 3 can be made of porcelain, resin, plastic or other polymer insulating materials, and is arranged on the surface of the healing device to protect and isolate the circuit module from saliva and soft tissue in the oral cavity. Waiting for interference.

In a preferred embodiment of the microelectric field stimulating healing device according to the present invention, the protruding contact portion has a lateral protruding portion and a longitudinal contact portion, as shown in FIGS. 2 , 3 and 4 . Wherein, the lateral protruding part keeps a certain gap between the anode of the micro-electric field stimulation healing device of the micro-dental implant and the implant.

In particular, the anode electrode 5 is provided at the bottom end of the contact portion, so that the anode electrode 5 can easily contact the soft tissue in the oral cavity or the like.

In the present invention, as a power source, a micro battery such as a button battery or the like is used. The micro battery is small in size, saves space and is easy to use. The micro-battery can be a micro-primary battery or a micro-accumulator. The micro-primary battery can be replaced before each treatment, and the micro-accumulator can be charged after each application. The micro-primary battery is preferred for one-time use and is conducive to hygiene.

There is no particular limitation on the battery type, and common power sources such as silver-zinc batteries and lithium batteries can be used.

In a preferred embodiment of the micro-electric field stimulation healing device according to the present invention, the micro-voltage constant-voltage circuit module provides a voltage below 5V; the micro-current constant-current circuit module provides a current below 500μA. Further preferably, the micro-voltage constant-voltage circuit module provides a voltage of 1-3V; the micro-current constant-current circuit module provides a current of 10-200μA.

In the micro-electric field stimulation healing device according to the present invention, there is no special requirement for the micro-voltage constant-voltage circuit module and the micro-current constant-current circuit module, and common constant-voltage circuit modules and constant-current circuit modules can be used.

In one embodiment, the microvoltage constant voltage circuit module includes a power supply module and a constant voltage control module, the power supply module provides a stable power supply for the microvoltage constant voltage circuit module, and the constant voltage control module is used to convert the power provided by the power supply module into a constant voltage output to the electrode.

In one embodiment, the micro-current constant-current circuit module includes a power supply module and a constant-current control module, the power supply module provides a stable power supply for the micro-current constant-current circuit module, and the constant-current control module is used to convert the power provided by the power supply module into a constant current output to the electrode.

Only the constant voltage control module is further described below.

As shown in Figures 5, 6 and 7, in one embodiment, the constant voltage control module includes:

The controller controls the operational amplifier group by receiving the signal output by the operational amplifier group and inputting the signal to the operational amplifier group, so that the operational amplifier group can output a constant voltage circuit,

Bank of operational amplifiers for generating a constant voltage circuit and inputting constant voltage to the electrodes.

Wherein, the DC converter 21 converts the voltage of the micro-battery 4 into a fixed voltage input to the operational amplifier group,

The DC converter 22 converts the voltage of the micro-battery 4 into a fixed voltage and inputs it to the controller.

Wherein, the connection relation of the power supply module is shown in Fig. 5 , the micro battery 4 is connected with the DC converter 21 and the DC converter 22 respectively, and the output terminals of the DC converter 21 and the DC converter 22 are the output terminals of the power supply module.

Wherein, the connection relationship between the power supply module and the constant voltage control module is shown in FIG. 5 , the DC converter 21 is connected to the operational amplifier group 24 , and the DC converter 22 is connected to the controller 23 .

Among them, the operational amplifier group includes:

The operational amplifier 24a converts the signal (Vin) input by the controller into a proportional voltage signal and inputs the voltage signal into the resistor 24c and the operational amplifier 24b,

The operational amplifier 24b receives the signal from the resistor and the operational amplifier 24a, and the output signal is sent to the operational amplifier 24a and the controller to realize constant current output through closed-loop feedback,

Wherein, both the operational amplifier 24 a and the operational amplifier 24 b receive the voltage from the DC converter 21 .

In the constant voltage control module, the controller controls the operational amplifier group by inputting signals to the operational amplifier group and receiving signals from the operational amplifier group, so that the operational amplifier group can output constant voltage electrical signals.

Among them, the controller includes:

The digital-to-analog converter 23b is used to output a control voltage proportional to the set constant voltage value as an input signal (Vin) and send it to the operational amplifier 24a,

The analog-to-digital converter 23a is used to receive the signal from the operational amplifier 24b.

Wherein, the connection relationship between the controller and the operational amplifier group is shown in FIG. 6 , the digital-to-analog converter 23b inputs signals to the operational amplifier 24a, and the operational amplifier 24b inputs signals to the analog-to-digital converter 23a.

Clinical Trials

For 10 clinical patients who received dental implants, the miniature dental implant micro-electric field stimulation healing device provided by the present invention was installed, and the healing period of the dental implant was observed to be 1-2 months, while the micro-electric field of the miniature dental implant was not installed. For patients who stimulate the healing device, the clinical observation period of healing is 3-4 months.

It is thus shown that the micro electric field stimulation healing device for the miniature dental implant provided by the present invention can effectively promote the rapid healing of the dental implant and shorten the healing period.

The present invention has been described in detail above in conjunction with specific implementations and exemplary examples, but these descriptions should not be construed as limiting the present invention. Those skilled in the art understand that without departing from the spirit and scope of the present invention, various equivalent replacements, modifications or improvements can be made to the technical solutions and implementations of the present invention, all of which fall within the scope of the present invention. The protection scope of the present invention shall be determined by the appended claims.

Claims (10)

1. micro-type dental implantation body electric microfield stimulates device for healing, it is characterized in that, this device has the lower surface that matches with dentistry implant (8) end face, and stretch out contact site (2), metallic maintenance bolt (1) passes the manhole (1a) of offering on this device for healing, is anchored in the dentistry implant filling dentistry resin (7) on the maintenance bolt, so that the isolation of maintenance bolt and oral environment, and be integral with this device for healing remainder; Insulating protective layer is arranged at the outer surface of this device for healing, so that electronic component and oral environment isolation;

This device for healing comprises:

Power supply,

Micro voltage constant voltage circuit module is used to electrode that constant voltage is provided,

Little electric current constant-current circuit module is used to electrode that constant electric current is provided,

Electrode comprises negative electrode (6) and anelectrode (5), and being used for derives and offer respectively other positions in dentistry implant and the human oral cavity with the curtage of little electric current constant-current circuit or the output of micro voltage constant voltage circuit,

Wherein, micro voltage constant voltage circuit module and little electric current constant-current circuit module the two not and deposit, select an existence, in other words, micro-type dental implantation body electric microfield stimulates device for healing or comprises micro voltage constant voltage circuit module or comprise little electric current constant-current circuit module;

Negative electrode (6) is arranged on the lower surface of this device for healing and dentistry implant joint; and the screw rod outer surface of device for healing lower surface top maintenance bolt (1); anelectrode (5) is arranged at and stretches out on the contact site, and negative electrode (6) is connected with insulating protective layer (3) respectively with anelectrode (5).

2. micro-type dental according to claim 1 implantation body electric microfield stimulates device for healing, it is characterized in that,

Described micro voltage constant voltage circuit module comprises supply module and constant voltage control module, and supply module provides stable power supply for micro voltage constant voltage circuit module, and the constant voltage control module is used for converting the power supply that supply module provides to constant voltage and outputs to electrode.

3. micro-type dental according to claim 1 implantation body electric microfield stimulates device for healing, it is characterized in that,

Described little electric current constant-current circuit module comprises supply module and constant-current control module, and supply module provides stable power supply for little electric current constant-current circuit module, and the power supply that constant-current control module is used for supply module is provided converts constant current output to electrode.

4. micro-type dental according to claim 1 implantation body electric microfield stimulates device for healing, it is characterized in that,

Dentistry resin (7) upper surface is identical with the upper level of device for healing remainder.

5. micro-type dental according to claim 1 implantation body electric microfield stimulates device for healing, it is characterized in that,

Insulating protective layer is made by porcelain, resin, plastics or other insulating polymeric materials.

6. micro-type dental according to claim 1 implantation body electric microfield stimulates device for healing, it is characterized in that,

Stretch out contact site (2) and have the part of crossing out and vertical contact portion, surface-coated insulating protective layer, inside is power supply, micro voltage constant voltage circuit module or little electric current constant-current circuit module,

Cross out part and keep certain interval with gingiva, be convenient to local sanitation and hygiene.

7. micro-type dental according to claim 6 implantation body electric microfield stimulates device for healing, it is characterized in that,

Anelectrode (5) is arranged at the bottom of contact site.

According to claim 1 or 7 described micro-type dental implantation body electric microfields stimulate device for healing, it is characterized in that,

Anelectrode contacts with other soft tissues in gingiva or the oral cavity.

According to claim 1 or 7 described micro-type dental implantation body electric microfields stimulate device for healing, it is characterized in that,

Negative electrode respectively with screw rod and the dentistry implant butt of maintenance bolt.

10. micro-type dental according to claim 1 implantation body electric microfield stimulates device for healing, it is characterized in that,

Micro voltage constant voltage circuit module provides the following voltage of 5V;

Little electric current constant-current circuit module provides 10-200 μ A electric current.

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