Patent Application
20230050550
This application is based on and claims priority under 35 U.S.C. 119 to Korean Patent Application No. 10-2021-0104996, filed on Aug. 10, 2021, in the Korean Intellectual Property Office, the disclosure of which is herein incorporated by reference in its entirety.
The disclosure relates to a painless syringe with an anti-slip structure for perforating the alveolar bone and injecting an anesthetic, and more particularly, to a painless syringe with an anti-slip structure for perforating the alveolar bone and injecting an anesthetic, which may prevent a reduction in rotational force due to resistance caused when perforating the alveolar bone by rotating the needle upon injecting an anesthetic for dental treatment.
In general, local anesthesia means to inject anesthetic directly into a surgical site to anesthetize only the surgical site and is mainly used in dental implant surgery.
Conventionally, the operator directly fills the syringe with the anesthetic and then injects the anesthetic. If the injection rate of the anesthetic is increased, excessive pressure is generated in the affected area and the patient feels pain.
In other words, the pressure and rate of injecting anesthetic may be major factors that may cause pain during local anesthesia. Further, when the operator injects, the injection rate and pressure are not constant and the injection state cannot be numerically identified. Thus, the patient cannot but endure the pain caused during injection.
To address the issues, Korean Patent Application Publication No. 10-2019-0101062 discloses a painless anesthetic injection device capable of minimizing pain by determining an injection amount and injection rate when injecting an anesthetic into an affected area in the accurate location, which includes an ampoule part having one side connected to a connection part of a housing and the other side coupled to a needle part and receiving a solution inside, a plunger disposed inside the housing and applying pressure to the ampoule part to inject the solution through the needle part, a motor to move the plunger, and a controller to transmit a driving control signal to the motor according to an injection mode.
Use of such conventional art allows for a constant injection rate and control of the injection amount, thereby reducing the pain suffered by the patient. However, the conventional art does not address the issue that the operator is required to manually insert the needle up to the position of injection to inject the anesthetic to the inside the alveolar bone.
To address the foregoing issues, the disclosure aims to provide a painless syringe with an anti-slip structure for perforating the alveolar bone and injecting an anesthetic, which renders it possible to directly inject an anesthetic into the root canal by perforating the alveolar bone while rotating the needle upon injecting the anesthetic.
The disclosure also aims to provide a painless syringe with an anti-slip structure for perforating the alveolar bone and injecting an anesthetic, which prevents a slip at the portion, where rotational force is transferred to the needle, due to resistance caused by the gums and alveolar bone.
The disclosure also aims to provide a painless syringe with an anti-slip structure for perforating the alveolar bone and injecting an anesthetic, which may allow an ampoule to be easily inserted and prevent an ampoule from escaping off during perforation or injection by securely fixing the ampoule.
According to an embodiment, a painless syringe with an anti-slip structure for perforating an alveolar bone and injecting an anesthetic comprises an injecting part having a needle for perforating the alveolar bone and injecting the anesthetic, a holder having a first end coupled with the injecting part and a second end open and empty, an ampoule formed to be inserted into the holder and having a first end into which the needle of the injecting part is inserted and a second end having a piston for discharging the anesthetic, a housing formed to receive the holder and having a through hole to expose the first end of the holder to an outside, and a handpiece coupled with the housing, rotating the ampoule, the holder, and the injecting part to perforate the alveolar bone, and pressing the piston to inject the anesthetic.
The holder may include a plurality of protruding ends protruding from an inner surface of the holder toward a central axis thereof to press an outer surface of the ampoule inserted into the holder to fix the ampoule.
The ampoule may include a plurality of insertion grooves formed in an outer surface thereof to allow the protruding ends to be inserted thereinto to prevent the ampoule from slipping on the holder.
The plurality of protruding ends may protrude at a predetermined height from the first end of the housing to the second end of the housing. At the second end of the housing, the plurality of protruding ends may decrease in height to reduce resistance to insertion of the ampoule.
The injecting part may include a support shaped as a cylinder and having a first surface open to allow the first end of the holder to be inserted thereinto and a needle formed, in a center of the support, through the first surface and a second surface of the support to discharge the anesthetic received in the ampoule or to perforate the alveolar bone.
The handpiece may include a first driver and a second driver generating a rotational force by external power, a first driving end coupled with the piston and converting the rotational force into translation motion by the first driver to move back and forth the piston, and a second driving end coupled with the ampoule and rotating the ampoule by the second driver to rotate the holder coupled with the ampoule and the injecting part. According to the embodiments of the disclosure, the painless syringe with an anti-slip structure for perforating the alveolar bone and injecting an anesthetic renders it possible to directly inject an anesthetic into the root canal by perforating the alveolar bone while rotating the needle upon injecting the anesthetic.
According to the embodiments of the disclosure, the painless syringe with an anti-slip structure for perforating the alveolar bone and injecting an anesthetic may prevents a slip at the portion, where rotational force is transferred to the needle, due to resistance caused by the gums and alveolar bone.
According to the embodiments of the disclosure, the painless syringe with an anti-slip structure for perforating the alveolar bone and injecting an anesthetic may allow an ampoule to be easily inserted and prevent an ampoule from escaping off during perforation or injection by securely fixing the ampoule.
A more complete appreciation of the disclosure and many of the attendant aspects thereof will be readily obtained as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawings, wherein:
Specific features and advantages of the disclosure are described below in detail with reference to the accompanying drawings. When determined to make the gist of the disclosure unnecessarily unclear, a detailed description of the functions and features of the disclosure are omitted.
The disclosure relates to a painless syringe with an anti-slip structure for perforating the alveolar bone and injecting an anesthetic, and more particularly, to a painless syringe with an anti-slip structure for perforating the alveolar bone and injecting an anesthetic, which may prevent a reduction in rotational force due to resistance caused when perforating the alveolar bone by rotating the needle upon injecting an anesthetic for dental treatment.
Hereinafter, exemplary embodiments of the disclosure are described in detail with reference to the accompanying drawings.
Referring to
The injecting part 100 includes a support 120 and the needle 110. The support 120 is formed in a cylindrical shape and has a first surface open to allow the first end of the holder 300 to be inserted thereto. The needle 110 is formed in the center of the support 120 and passes through the first surface and a second surface of the support 120 to discharge the anesthetic received inside the ampoule 400 or to perforate the alveolar bone.
The handpiece 500 includes a first driver 510, a second driver 520, a first driving end 511, and a second driving end 521. The first driver 510 and the second driver 520 generate rotational force by external power. The first driving end 511 is coupled with the piston 410 and converts the rotational force by the first driver 510 into translational motion to move back and forth the piston 410. The second driving end 521 is coupled with the ampoule and rotate the ampoule by the second driver 520, thereby rotating the holder 300 and the injecting part 100 coupled with the ampoule 400.
The support 120 of the injecting part 100 is detachably attached to the first end of the holder 300 to replace the needle 110 and is screwed to the outer surface of the first end of the holder 300. The needle 110 protrudes to two opposite sides of a center of the support 120, so that a first end of the needle 110 perforates the alveolar bone to inject the anesthetic into the root canal, and a second end of the needle 110 is inserted through the holder 300 to the inside of the ampoule to discharge the anesthetic stored in the ampoule 400.
Since the support 120 and the needle 110 are integrally formed, if the injection is completed or the procedure is finished, the injecting part 100 may be removed and discarded, so that a medical accident may be prevented.
The first and second ends of the needle 110 are formed with sharp tips (or bevels) so that the first end of the needle 110 is inserted, with reduced resistance, into the patient's gums and alveolar bone, and the second end of the needle 110 may pierce the ampoule 400 into the inside of the ampoule 400 by its sharp tip (or bevel).
The first end of the holder 300 is formed to allow the injecting part 100 to be detachably attached thereto, and the second end of the holder 300 is open to allow the ampoule to be inserted thereinto. The injecting part 100 may be fixed to the first end of the holder 300, and the ampoule may be fixed to the second end of the holder 300.
The first end of the holder 300 is provided with a fastening end 310 threated to be coupled with the injecting part 100, and a rotating end 320 is formed on the rear surface of the fastening end 310 to be fixed by the housing 200.
The fastening end 310 is formed to be screwed with the support 120 of the injecting part 100 to be detachably attached to the support 120, and the rotating end 320 is formed to contact the housing 200 to allow the first end of the holder 300 to be fixed to the housing 200.
The rotating end 320 is rotated in contact with the housing 200 when the holder 300 is rotated by the driver of the handpiece 500, and a lubricant (e.g., a lubricating oil) may be applied to the outer surface of the rotating end 320 to reduce friction.
The ampoule 400 may be formed in a shape corresponding to (or identical to) the inner shape of the holder 300 to tightly contact the inner surface of the holder 300, and the first end of the ampoule 400 may be formed of rubber to allow for insertion of the needle 110 of the injecting part 100 coupled to the first end of the holder 300.
The second end of the ampoule 400 is open to receive and store an anesthetic therein and is coupled with the piston 410 and sealed to prevent leakage of the stored anesthetic.
The housing 200 is formed at a first end of the handpiece 500 and is detachably attached to the handpiece 500. The inside of the housing 200 is formed to allow the holder coupled with the injecting part 100 and the ampoule 400 to be attached or detached.
The first end of the housing 200 has a through hole through which the first end of the holder 300 protrudes to the outside of the housing 200. The injecting part 100 coupled to the first end of the holder 300 may be exposed to the outside through the through hole.
The handpiece 500 may be used to control the operation of automatic injection and to receive related devices and may include a controller, a battery, a display, a manipulation unit, a speaker, a charging unit, and a pressure sensor.
Drivers of the handpiece 500 may be divided into a first driver 510 and a second driver 520 which include a first driving end 511 and a second driving end 521, respectively, to perform different operations.
The first driver 510 and the second driver 520 receive power from the battery and generate rotational force.
The first driving end 511 may be formed to be coupled with the piston 410 formed inside the ampoule 400. Upon receiving the rotational force from the first driver 510, the first driving end 511 may convert the rotational force into translational motion and be moved up or down to thereby move the piston 410.
The second driving end 521 is coupled with the second end of the ampoule 400 and, if receiving rotational force from the second driver 520, transfers the rotational force to the ampoule 400 to rotating the ampoule 400, thereby rotating the holder 300 and injecting part 100 coupled with the ampoule 400 and thus allowing the needle 110 of the injecting part 100 to perforate the alveolar bone.
In this case, the second driving end 521 may be coupled to the holder 300, not the ampoule 400, to rotate the holder 300.
The second driving end 521 may be hollow to position the first driving end 521 in the center thereof.
If the second end of the housing 200 is coupled to the handpiece 500, the ampoule 400 positioned inside the housing 200 is positioned coaxial with the first driving end 511 formed inside the handpiece 500 and, if the first driving end 511 is moved by the first driver 510 of the handpiece 500 to be coupled to the rear surface of the piston 410.
It is preferable that the second driving end 521 is also formed so that when the housing 200 is coupled to the handpiece 500, the second driving end 521 is coupled with the ampoule 400 or the holder 300 in substantially the same manner as the first driving end 511.
Referring to
The ampoule 400 has a plurality of insertion grooves 420 formed in the outer surface thereof to allow the protruding ends 330 to be inserted thereinto, preventing the ampoule 400 from slipping on the holder 300 when rotated by the handpiece 500.
The protruding ends 330 protrude from the inner surface of the housing 200 at a predetermined height from the first end of the housing 200 to the second end of the housing 200. At the second end of the housing 200, the protruding ends 330 gradually decrease in height to reduce resistance to insertion of the ampoule 400.
Referring to
In this case, the strength at which the rotational force is transferred varies depending on the coupling state of the parts. For example, if the contact between the holder 300 and the ampoule 400 weakens, a slip may occur, causing the needle 110 to fail to perforate the alveolar bone.
The plurality of protruding ends 330 formed on the inner surface of the holder 300 pressurize the outer surface of the ampoule 400 inserted into the holder 300 to prevent a slip. Further, the insertions grooves 420 are formed in the outer surface of the ampoule 400 in substantially the same positions as the protruding ends 330, and as the protruding ends 330 fit into the insertion grooves 420, a slip may be prevented during rotation.
The plurality of protruding ends 330 are formed at a predetermined height on the inner surface of the holder 300 at predetermined intervals, from the first end to second end of the holder 300. The inserted ampoule 400 may be pressurized by the protruding ends 330.
To allow the ampoule 400 to be more easily inserted into the holder 300, the protruding ends 330 gradually decrease in height around the second end of the holder 300, so that a portion of the ampoule 400 is first inserted.
The insertion grooves 420 are formed in the outer surface of the ampoule 400 from the first end to second end of the ampoule 400. If the ampoule 400 is inserted into the holder 300, the protruding ends 330 pressingly fit and engage into the insertion grooves 420 as do gear, so that the rotational force transferred from the second driving end 521 may be transferred to the holder 300 without loss.
Thus, when the needle 110 perforates the alveolar bone, loss of the rotational force does not occur, mitigating the patient's pain.
As described above, by the painless syringe with an anti-slip structure for perforating the alveolar bone and injecting an anesthetic according to the disclosure, it is possible to directly inject an anesthetic into the root canal by perforating the alveolar bone while rotating the needle upon injecting the anesthetic. It is also possible to prevent a slip at the portion, where rotational force is transferred to the needle, due to resistance caused by the gums and alveolar bone. Further, an ampoule may be easily inserted, and an ampoule may be prevented from escaping off during perforation or injection by securely fixing the ampoule.
Although preferred embodiments of the disclosure have been described above, various changes or modifications may be made thereto by one of ordinary skill in the art without departing from the technical spirit and scope of the claims. Accordingly, the scope of the disclosure should be interpreted by the following claims described to include such various changes.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10-2021-0104996 | Aug 2021 | KR | national |
This invention was made with Korean government support under Project No. S2782714 sponsored by the Ministry of SMEs and Startups (MSS) and managed by Korea Technology and information Promotion Agency for SMEs (TIPA) (under Research Project Title: Technical Development for Commercialization by SMEs (Development of new products subject to purchase conditions); Subject Title: Development of Auto-injection device with wireless charging for intra-osseous anesthetic in Oral; Research period: Oct. 1, 2019 through Sep. 30, 2019) with the primary beneficiary of sponsorship being Dentis Co., Ltd.
