CN112604138B

CN112604138B - Department of stomatology is with device of dosing

Info

Publication number: CN112604138B
Application number: CN202011591195.3A
Authority: CN
Inventors: 不公告发明人
Original assignee: Xiangxi Stomatological Hospital Co ltd
Current assignee: Xiangxi Stomatological Hospital Co Ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2022-09-06
Anticipated expiration: 2040-12-29
Also published as: CN112604138A

Abstract

The invention discloses a drug delivery device for stomatology, which comprises a bottom plate, wherein a main body supporting mechanism is arranged on the upper surface of the bottom plate, a drug delivery mechanism is arranged at one end of the main body supporting mechanism, a quantitative mechanism is arranged in the drug delivery mechanism, and a tooth supporting mechanism is arranged at one end of the drug delivery mechanism, so that the drug delivery device has the following beneficial effects that: support patient's tooth through tooth supporting mechanism, prevent that older or younger patient conditioned reflex of age from making the interlock action, the angle of cylinder has been adjusted through main part supporting mechanism, when carrying out oral treatment to the patient, the position that can adjust the mechanism of dosing makes the mechanism of dosing be close to patient's oral cavity, be convenient for dose at any time, be convenient for a lot of dosing through setting up quantitative mechanism, block the push pedal of dosing through the internal thread rotary drum, and adjust the sliding distance of the push pedal of dosing through the scale on surface, with this control injection amount.

Description

Department of stomatology is with device of dosing

Technical Field

The invention relates to a drug delivery device, in particular to a drug delivery device for department of stomatology, and belongs to the technical field of medical instruments for department of stomatology.

Background

Department of stomatology, one of the medical discipline categories. The major stomatological disorders include: stomatoglossal part skin sample, epiderm submaxillary space infection, jaw face lymphangioma, dentate process development deformity, maxillary sinus malignant tumor, jaw bone amelogenesis cytoma, chronic ethmoid sinusitis, mandibular retropulsion, tetracycline teeth disease, tongue leukoplakia, etc. By techniques, many periodontal diseases are completely cured. The development of tissue bioengineering techniques such as: guided tissue regeneration technology, gene technology, artificial tooth implantation and the like are more exciting hopes for the regeneration of diseased teeth. But the treatment of periodontal disease must be a sequential treatment. The development of a detailed and effective treatment plan, the exquisite medical attention of a physician, and the aggressive fit of a patient during a treatment is critical to the success of the treatment.

When department of stomatology carries out oral treatment or oral surgery to the patient, need carry out continuous administration to the oral cavity inside sometimes, current device of dosing is dosed through the syringe of no syringe needle, and the scale can't be seen when the syringe needle is put into the oral cavity, and the continuous many times ration of being inconvenient for is dosed to do not have tooth supporting mechanism, the less old patient probably conditioned reflex is closed the mouth, and the treatment of being inconvenient for goes on.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a drug delivery device for department of stomatology.

In order to achieve the purpose, the invention adopts the following technical scheme:

the drug delivery device for the department of stomatology comprises a bottom plate, wherein a main body supporting mechanism is arranged on the upper surface of the bottom plate, a drug delivery mechanism is arranged at one end of the main body supporting mechanism, a quantitative mechanism is arranged inside the drug delivery mechanism, and a tooth supporting mechanism is arranged at one end of the drug delivery mechanism;

the main body supporting mechanism comprises a supporting vertical rod, the supporting vertical rod is fixedly connected to the upper surface of the bottom plate, the surface of the side wall of the upper end of the supporting vertical rod is rotatably connected with a first rotating arm, one end, far away from the supporting vertical rod, of the first rotating arm is hinged with a second rotating arm, one end, far away from the first rotating arm, of the second rotating arm is hinged with a third rotating arm, one end, far away from the second rotating arm, of the third rotating arm is hinged with a fourth rotating arm, one end, far away from the third rotating arm, of the fourth rotating arm is rotatably connected with a rotating rod, and the upper surface of the rotating rod is provided with a through hole;

the drug delivery mechanism comprises a cylinder, the cylinder is fixedly inserted into the through hole, a first sliding groove is formed in the center of the bottom end surface of the cylinder, a second sliding groove is formed in the center of the top end surface of the cylinder, an injection tube is connected to the inside of the second sliding groove in a sliding mode, a drug delivery small tube is fixedly communicated with the injection end of the injection tube, a piston column is connected to the inside of the injection tube in a sliding mode, a drug delivery push plate is fixedly connected to one end, away from the drug delivery small tube, of the piston column, a piston is arranged at one end, away from the drug delivery push plate, of the piston column, limiting blocks are fixedly connected to the surfaces of the two sides of the drug delivery small tube, limiting grooves are formed in the two sides of the surface of the inner wall of the first sliding groove, a threaded groove is formed in the surface of one side of the cylinder, and a fixing bolt is connected to the inner threads of the threaded groove;

the quantitative mechanism comprises an annular slot, the annular slot is formed in the upper surface of the column body, an internal thread rotary drum is inserted into the annular slot, a connecting thread is formed in the inner surface of the annular slot, and scales are formed in the outer surface of the internal thread rotary drum;

the tooth supporting mechanism comprises an outer rotating cylinder, a through groove is arranged on the surface of one end of the outer rotating cylinder, a bearing is fixedly connected with the inner surface of the through groove, the inner surface of the outer rotating cylinder is provided with inner surface threads, the inner part of the outer rotating cylinder is inserted with a sleeve, one end of the inner side surface of the sleeve is fixedly connected with two anti-rotation sliding blocks, one end of the column body close to the outer rotating cylinder is provided with two anti-rotation grooves, the outer surface of the sleeve is provided with outer surface threads, the surface of one end of the sleeve, which is far away from the anti-rotation sliding block, is provided with two first hinge grooves, hinge rods are hinged inside the two first hinge grooves, the cylinder is close to two quarter butts of one end side surface fixedly connected with of first spout, two the quarter butt all articulates in the inside in third hinge groove, two the third hinge groove is all seted up in the surperficial center department of bracing piece, two the bracing piece is close to the one end surface of hinge rod and has all seted up second hinge groove.

Preferably, the first chute is communicated with the second chute, and the administration small tube is slidably connected with the first chute.

Preferably, the two limiting blocks are symmetrically arranged, and the two limiting grooves are connected with the corresponding limiting blocks in a sliding mode.

Preferably, the threaded groove is communicated with the second sliding groove, the joint is located at one end, close to the first sliding groove, of the second sliding groove, and the fixing bolt is arranged in contact with the injection tube.

Preferably, the connecting thread is arranged on the inner ring surface of the annular slot.

Preferably, the connecting thread on the inner ring surface of the annular slot is matched with the thread on the inner surface of the internal thread rotary drum, and the internal thread rotary drum is contacted with the administration push plate.

Preferably, the inside of the bearing is rotatably connected with the cylinder, and the sleeve is sleeved on the outer surface of one end, close to the outer rotating cylinder, of the cylinder.

Preferably, the two anti-rotation sliding blocks are symmetrically arranged and are respectively in sliding connection with the corresponding anti-rotation grooves.

Preferably, the inner surface threads of the outer rotary cylinder are matched with the outer surface threads of the outer surface of the sleeve.

Preferably, two first hinge slot symmetry sets up, two the bracing piece symmetry sets up, two the hinge bar all sets up rather than the articulated setting of the second hinge slot that corresponds.

The invention provides a drug delivery device for stomatology, which has the beneficial effects that:

(1) support patient's tooth through tooth supporting mechanism, prevent that older or younger patient's conditioned reflex from making the interlock action, the rotatory outer rotary drum that goes, outer rotary drum promotes the sleeve through internal surface screw and slides, and the hinge bar promotes the bracing piece and rotates along the stub bar, inserts back between the tooth, and the outer rotary drum of antiport, two bracing pieces become parallel to each other again, support patient's tooth.

(2) The angle of cylinder has been adjusted through main part supporting mechanism, when carrying out oral treatment to the patient, can adjust the position of mechanism of dosing and make the mechanism of dosing be close to the patient oral cavity, is convenient for dose at any time.

(3) Be convenient for a lot of dosing through setting up quantitative mechanism and give, block the push pedal of dosing through the internal thread rotary drum to adjust the sliding distance of the push pedal of dosing through the scale on surface, with this control injection amount, the position of internal thread rotary drum is noted to the screw thread through internal thread rotary drum surface, then adjusts the position of internal thread rotary drum according to single dose, makes and gives the distance between push pedal and the internal thread rotary drum, the dosing of being convenient for.

Drawings

FIG. 1 is a front view of a dental delivery device according to the present invention;

FIG. 2 is an external view of a drug delivery mechanism of a drug delivery device for oral use according to the present invention;

FIG. 3 is a cross-sectional view of a dosing mechanism of a dental dosing device according to the present invention;

FIG. 4 is a schematic view of the operation of a drug delivery mechanism of a drug delivery device for oral use according to the present invention;

FIG. 5 is an enlarged view of the portion A of FIG. 3 of a drug delivery device for oral use according to the present invention;

FIG. 6 is an enlarged view of the portion B of FIG. 3 of a drug delivery device for oral administration according to the present invention;

FIG. 7 is a perspective view of an internally threaded drum of a dental delivery device according to the present invention;

FIG. 8 is a side view of the sleeve and anti-rotation block structure of a dental delivery device in accordance with the present invention.

In the figure: the device comprises a bottom plate 1, a main body supporting mechanism 2, a supporting vertical rod 21, a first rotating arm 22, a second rotating arm 23, a third rotating arm 24, a fourth rotating arm 25, a rotating rod 26, a through groove 27, a dosing mechanism 3, a column 31, a first sliding groove 32, a second sliding groove 33, a syringe 34, a piston column 35, a dosing push plate 36, a dosing small tube 37, a limiting groove 38, a limiting block 39, a threaded groove 310, a fixing bolt 311, a dosing mechanism 4, an annular slot 41, an internal threaded rotary cylinder 42, a connecting thread 43, a scale 44, a tooth supporting mechanism 5, an external rotary cylinder 51, a through groove 52, a bearing 53, an internal surface thread 54, a sleeve 55, an anti-rotation groove 56, an anti-rotation sliding block 57, an external surface thread 58, a first hinge groove 59, a hinge rod 510, a second hinge groove 511, a supporting rod 512, a third hinge groove 513 and a short rod 514.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-8, a drug delivery device for stomatology department comprises a bottom plate 1, a main body supporting mechanism 2 is arranged on the upper surface of the bottom plate 1, a drug delivery mechanism 3 is arranged at one end of the main body supporting mechanism 2, a dosing mechanism 4 is arranged inside the drug delivery mechanism 3, and a tooth supporting mechanism 5 is arranged at one end of the drug delivery mechanism 3;

the main body supporting mechanism 2 comprises a supporting vertical rod 21, the supporting vertical rod 21 is fixedly connected to the upper surface of the bottom plate 1, the surface of the side wall of the upper end of the supporting vertical rod 21 is rotatably connected with a first rotating arm 22, one end, far away from the supporting vertical rod 21, of the first rotating arm 22 is hinged with a second rotating arm 23, one end, far away from the first rotating arm 22, of the second rotating arm 23 is hinged with a third rotating arm 24, one end, far away from the second rotating arm 23, of the third rotating arm 24 is hinged with a fourth rotating arm 25, one end, far away from the third rotating arm 24, of the fourth rotating arm 25 is rotatably connected with the upper surface of a rotating rod 26, the rotating rod 26 is provided with a through hole 27, the main body supporting mechanism 2 is supported through a plurality of rotating arms, and when the oral cavity treatment is carried out on a patient, the position of the administration mechanism 3 can be adjusted to enable the administration mechanism 3 to be close to the oral cavity of the patient, and the administration can be convenient at any time;

the drug delivery mechanism 3 comprises a cylinder 31, the cylinder 31 is fixedly inserted into the through hole 27, a first sliding groove 32 is formed in the center of the bottom end surface of the cylinder 31, a second sliding groove 33 is formed in the center of the top end surface of the cylinder 31, an injection tube 34 is slidably connected inside the second sliding groove 33, an injection end of the injection tube 34 is fixedly communicated with a drug delivery tubule 37, a piston column 35 is slidably connected inside the injection tube 34, one end of the piston column 35, far away from the drug delivery tubule 37, is fixedly connected with a drug delivery push plate 36, one end of the piston column 35, far away from the drug delivery push plate 36, is provided with a piston, the surfaces of the two sides of the drug delivery tubule 37 are fixedly connected with a limiting block 39, the two sides of the inner wall surface of the first sliding groove 32 are respectively provided with a limiting groove 38, the surface of one side of the cylinder 31 is provided with a threaded groove 310, the internal thread of the threaded groove 310 is connected with a fixing bolt 311, and the drug delivery mechanism 3 delivers drugs to an affected part in the oral cavity of a patient through the drug delivery tubule 37, firstly, filling a medicament into an injection tube 34, enabling a dosing small tube 37 to face upwards, evacuating air in a cavity, then pushing a dosing push plate 36, enabling the dosing push plate 36 to drive a piston column 35 to slide in the injection tube 34 for dosing, wherein the injection tube 34 and the dosing small tube can slide in a column body 31, facilitating expansion and contraction and dosing on an affected part, fixing the injection tube 34 through a fixing bolt 311 after expansion and contraction, and limiting the expansion and contraction amplitude through arranging a limiting groove 38 and a limiting block 39;

the quantitative mechanism 4 comprises an annular slot 41, the annular slot 41 is arranged on the upper surface of the column body 31, an internal thread rotary drum 42 is inserted into the annular slot 41, a connecting thread 43 is arranged on the inner surface of the annular slot 41, a scale 44 is arranged on the outer surface of the internal thread rotary drum 42, the quantitative mechanism 4 limits the drug administration push plate 36 by arranging the internal thread rotary drum 42, when multiple continuous drug administrations are carried out, the internal thread rotary drum 42 is rotated after each drug administration, the internal thread rotary drum 42 moves in the annular slot 41 through a thread structure, the drug administration push plate 36 is blocked by the internal thread rotary drum 42, and the sliding distance of the drug administration push plate 36 is adjusted through the scale 44 on the surface, so that the drug injection amount is controlled;

the tooth supporting mechanism 5 comprises an outer rotary drum 51, a through groove 52 is formed on one end surface of the outer rotary drum 51, a bearing 53 is fixedly connected to the inner surface of the through groove 52, an inner surface thread 54 is formed on the inner surface of the outer rotary drum 51, a sleeve 55 is inserted into the outer rotary drum 51, two anti-rotation sliders 57 are fixedly connected to one end of the inner side surface of the sleeve 55, two anti-rotation grooves 56 are formed at one end of the column 31 close to the outer rotary drum 51, an outer surface thread 58 is formed on the outer surface of the sleeve 55, two first hinge grooves 59 are formed on one end surface of the sleeve 55 far away from the anti-rotation sliders 57, hinge rods 510 are hinged inside the two first hinge grooves 59, two short rods 514 are fixedly connected to one end surface of the column 31 close to the first slide groove 32, the two short rods 514 are hinged inside the third hinge grooves 513, the two third hinge grooves 513 are formed at the center of the surface of the support rod 512, and a second hinge groove 511 is formed on one end surface of the two support rods 512 close to the hinge rod 510, since the patient may be younger or older and the administration device may be unintentionally occluded during administration of the drug, which may cause difficulty in administration of the drug, the tooth support mechanism 5 is controlled by the outer rotary cylinder 51 such that the support rod 512 supports the patient's teeth for administration and treatment.

The first chute 32 is communicated with the second chute 33, and the administration small tube 37 is slidably connected with the first chute 32, so that the extension and contraction are facilitated, and the administration position is conveniently adjusted.

Two stopper 39 symmetry sets up, and two spacing grooves 38 all with its stopper 39 sliding connection who corresponds, the flexible scope of restriction tubule 37 of dosing.

The threaded groove 310 is communicated with the second sliding groove 33, the connection position is located at one end, close to the first sliding groove 32, of the second sliding groove 33, the fixing bolt 311 is arranged in contact with the injection tube 34, the injection tube 34 is convenient to clamp, and when the positions of the injection tube 34 and the administration small tube 37 are adjusted, the fixing bolt 311 is used for fixing, and administration is convenient.

The connecting thread 43 is provided on the inner circumferential surface of the annular insertion groove 41 to facilitate the mating with the internally threaded rotary cylinder 42.

The connecting thread 43 on the inner ring surface of the annular slot 41 and the thread on the inner surface of the internal thread rotary drum 42 are matched with each other, the internal thread rotary drum 42 is arranged in contact with the drug administration push plate 36, and when the internal thread rotary drum 42 rotates, the internal thread rotary drum can slide in the annular slot 41, so that the pushing distance of the drug administration push plate 36 is limited.

The inside of the bearing 53 is rotatably connected with the cylinder 31, and the sleeve 55 is sleeved on the outer surface of one end of the cylinder 31 close to the outer rotary drum 51, so that the sleeve 55 can stably slide under the driving of the inner surface threads 54 of the outer rotary drum 51.

The two anti-rotation sliding blocks 57 are symmetrically arranged, and the two anti-rotation sliding blocks 57 are respectively in sliding connection with the corresponding anti-rotation grooves 56 to prevent the sleeve 55 from stably sliding and rotating under the drive of the outer surface threads 58.

The inner surface threads 54 of the outer barrel 51 are configured to mate with the outer surface threads 58 of the outer surface of the sleeve 55 to facilitate the sliding movement of the sleeve 55 as the outer barrel 51 is rotated.

Two first hinge grooves 59 symmetry sets up, and two bracing pieces 512 symmetry sets up, and two articulated poles 510 all set up rather than the articulated setting in second hinge groove 511 that corresponds, are convenient for drive bracing piece 512 along the rotation of quarter butt 514.

The working principle is as follows: when in use, firstly, a medicament is injected into the injection tube 34, then the rotating rod 26 is rotated, the rotating rod 26 drives the column body 31 to rotate, the end of the column body 31 close to the administration small tube 37 is upwards pushed, the administration push plate 36 is pushed, air in the injection tube 34 and the administration small tube 37 is exhausted, then the teeth of a patient are supported through the teeth support mechanism 5, firstly, the outer rotary cylinder 51 is rotated, the outer rotary cylinder 51 pushes the sleeve 55 to slide through the inner surface threads 54, the anti-rotation sliding blocks 57 on the inner surface of the sleeve 55 prevent the sleeve 55 from rotating, so as to ensure the sleeve 55 to stably slide, the sleeve 55 pushes the hinge rod 510 to rotate the hinge rod 510 to push the support rod 512 to rotate along the short rod 514, the end points of the two support rods 512 are mutually contacted (as shown in figure 4), after the two support rods are inserted between teeth, the outer rotary cylinder 51 is reversely rotated, the sleeve 55 is moved back under the action of the thread structure, the sleeve 55 drives the hinge rod 510 to move back, the hinged bar 510 pulls back the support bars 512 and the two support bars 512 become parallel to each other again, supporting the patient's teeth and preventing the patient from conditioned reflex occlusal movement.

The angle of the cylinder 31 is adjusted by the main body supporting mechanism 2, then the injection tube 34 and the administration small tube 37 are pushed to respectively slide in the second chute 33 and the first chute 32, the administration small tube 37 is aligned with the affected part, the position of the affected part is adjusted, then the fixing bolt 311 is rotated to enable the fixing bolt 311 to clamp the injection tube 34, then the internal thread rotary drum 42 is rotated, the internal thread rotary drum 42 is pushed by the internal thread to move outwards along the annular slot 41, after the internal thread rotary drum 42 contacts with the administration push plate 36, the position of the internal thread rotary drum 42 is recorded by the threads on the surface of the internal thread rotary drum 42, then the internal thread rotary drum 42 is reversely rotated according to the single dose, the internal thread rotary drum 42 is made to slide towards the annular slot 41 again, the distance is generated between the administration push plate 36 and the internal thread rotary drum 42, and the dosing is convenient.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. A drug delivery device for stomatology department comprises a bottom plate (1), and is characterized in that a main body supporting mechanism (2) is arranged on the upper surface of the bottom plate (1);

a dosing mechanism (3) is arranged at one end of the main body supporting mechanism (2), a quantitative mechanism (4) is arranged inside the dosing mechanism (3), and a tooth supporting mechanism (5) is arranged at one end of the dosing mechanism (3);

the main body supporting mechanism (2) comprises a supporting vertical rod (21), the supporting vertical rod (21) is fixedly connected to the upper surface of the bottom plate (1), a first rotating arm (22) is rotatably connected to the surface of the side wall of the upper end of the supporting vertical rod (21), a second rotating arm (23) is hinged to one end, away from the supporting vertical rod (21), of the first rotating arm (22), a third rotating arm (24) is hinged to one end, away from the first rotating arm (22), of the second rotating arm (23), a fourth rotating arm (25) is hinged to one end, away from the second rotating arm (23), of the third rotating arm (24), of the fourth rotating arm (25), a rotating rod (26) is rotatably connected to one end, away from the third rotating arm (24), and a through hole (27) is formed in the upper surface of the rotating rod (26);

the drug delivery mechanism (3) comprises a cylinder (31), the cylinder (31) is fixedly inserted into the through hole (27), a first sliding groove (32) is formed in the center of the surface of the bottom end of the cylinder (31), a second sliding groove (33) is formed in the center of the surface of the top end of the cylinder (31), an injection tube (34) is connected to the inside of the second sliding groove (33) in a sliding manner, a small drug delivery tube (37) is fixedly communicated with the injection end of the injection tube (34), a piston column (35) is connected to the inside of the injection tube (34) in a sliding manner, a drug delivery push plate (36) is fixedly connected to one end, far away from the small drug delivery tube (37), of the piston column (35) is provided with a piston, two side surfaces of the small drug delivery tube (37) are fixedly connected with limiting blocks (39), two side surfaces of the inner wall surface of the first sliding groove (32) are respectively provided with a limiting groove (38), a threaded groove (310) is formed in the surface of one side of the column body (31), and a fixing bolt (311) is connected to the inner portion of the threaded groove (310) in a threaded mode;

the quantitative mechanism (4) comprises an annular slot (41), the annular slot (41) is formed in the upper surface of the column body (31), an internal thread rotating cylinder (42) is inserted into the annular slot (41), a connecting thread (43) is formed in the inner surface of the annular slot (41), and scales (44) are formed in the outer surface of the internal thread rotating cylinder (42);

the tooth supporting mechanism (5) comprises an outer rotating cylinder (51), a through groove (52) is formed in the surface of one end of the outer rotating cylinder (51), a bearing (53) is fixedly connected to the inner surface of the through groove (52), an inner surface thread (54) is formed in the inner surface of the outer rotating cylinder (51), a sleeve (55) is inserted into the outer rotating cylinder (51), two anti-rotation sliding blocks (57) are fixedly connected to one end of the inner side surface of the sleeve (55), two anti-rotation grooves (56) are formed in one end, close to the outer rotating cylinder (51), of the cylinder (31), an outer surface thread (58) is formed in the outer surface of the sleeve (55), two first hinge grooves (59) are formed in the surface of one end, far away from the anti-rotation sliding blocks (57), hinge rods (510) are hinged to the insides of the two first hinge grooves (59), and two short rods (514) are fixedly connected to the surface of one end, close to the first sliding groove (32), of the cylinder (31), the two short rods (514) are hinged inside the third hinge grooves (513), the two third hinge grooves (513) are formed in the centers of the surfaces of the support rods (512), the surfaces of one ends, close to the hinge rods (510), of the two support rods (512) are respectively provided with a second hinge groove (511), the first sliding groove (32) is communicated with the second sliding groove (33), and the small drug delivery pipe (37) is connected with the first sliding groove (32) in a sliding manner; when the device is used, firstly, a medicament is injected into the injection tube (34), then the rotating rod (26) is rotated, the rotating rod (26) drives the cylinder (31) to rotate, one end of the cylinder (31), which is close to the administration tubule (37), is upward, the administration push plate (36) is pushed, air in the injection tube (34) and the administration tubule (37) is exhausted, then the teeth of a patient are supported through the tooth support mechanism (5), the outer rotary cylinder (51) is rotated, the outer rotary cylinder (51) pushes the sleeve (55) to slide through the inner surface threads (54), the anti-rotation sliding block (57) on the inner surface of the sleeve (55) prevents the sleeve (55) from rotating, the sleeve (55) is ensured to stably slide, the sleeve (55) pushes the hinge rod (510) to rotate after sliding towards the direction of the first hinge groove (59), the hinge rod (510) pushes the support rod (512) to rotate along the short rod (514), and the end points of the two support rods (512) are contacted with each other, after the patient's teeth are inserted into the space between the teeth, the outer rotating cylinder (51) is rotated reversely, the sleeve (55) moves back under the action of the thread structure, the sleeve (55) drives the hinged rod (510) to move back, the hinged rod (510) pulls back the supporting rod (512), the two supporting rods (512) are parallel to each other again, the teeth of the patient are supported, and the patient is prevented from making occlusion action under the condition of conditioned reflex.

2. The drug delivery device for the department of stomatology according to claim 1, characterized in that, the two limit blocks (39) are symmetrically arranged, and the two limit grooves (38) are both connected with the corresponding limit blocks (39) in a sliding manner.

3. The drug delivery device for oral cavity department according to claim 1, characterized in that the thread groove (310) is communicated with the second sliding groove (33), the connection position is located at one end of the second sliding groove (33) near the first sliding groove (32), and the fixing bolt (311) is arranged in contact with the injection tube (34).

4. The oral administration device according to claim 1, wherein the connection thread (43) is formed on an inner circumferential surface of the annular insertion groove (41).

5. The device according to claim 1, wherein the coupling thread (43) of the inner circumferential surface of the annular insertion groove (41) and the thread of the inner circumferential surface of the internally threaded drum (42) are arranged to match each other, and the internally threaded drum (42) is arranged to contact the administration push plate (36).