CN113633411A

CN113633411A - Dental impression tray for department of stomatology

Info

Publication number: CN113633411A
Application number: CN202110925699.2A
Authority: CN
Inventors: 占燕; 江伟环
Original assignee: Sizhou Yichi Shenzhen Co ltd
Current assignee: Sizhou Yichi Shenzhen Co ltd
Priority date: 2021-08-12
Filing date: 2021-08-12
Publication date: 2021-11-12
Anticipated expiration: 2041-08-12
Also published as: CN113633411B

Abstract

The invention relates to the technical field of oral tools and discloses a dental impression tray for department of stomatology, which comprises a handle and a tray main body arranged at one end of the handle, wherein the tray main body comprises a middle groove and two side grooves respectively arranged at two sides of the middle groove; the middle groove and the two side grooves are spliced to form a U-shaped groove; one side of the middle groove is fixedly connected with one side groove through an elastic connecting part; and an adjusting device for adjusting the connection angle of the middle groove and the two side grooves is arranged on one side of the tray main body. The invention has the effect of improving the application range of the tray main body.

Description

Dental impression tray for department of stomatology

Technical Field

The invention relates to the technical field of oral tools, in particular to a dental impression tray for department of stomatology.

Background

In oral surgery, the straightening and restoration of teeth is the most common operation at present, and with the improvement of living standard of people, people pay more and more attention to the health of teeth, and the oral impression tray is a special oral surgery room appliance which is commonly used in the straightening and restoration of teeth and is used for obtaining a tooth model of a patient.

Generally, a groove matched with the dental arch shape is arranged on the oral cavity impression tray, when a tooth model is taken, the tray is used for containing impression materials such as diatom ooze and the like, then the oral cavity impression tray is put into an oral cavity, and the impression materials are pressed on a tooth row by force, so that the tooth impression model can be obtained.

In view of the above-mentioned related technologies, the inventor of the present application finds that at least the following technical problems exist in the process of implementing the technical solution of the invention in the embodiment of the present application: most of the traditional oral impression trays are in a horseshoe shape, but some patients have deformed teeth, so that the teeth cannot be completely printed on the oral impression trays.

Disclosure of Invention

The embodiment of the application provides a department of stomatology dental impression tray, has solved the unable problem that is suitable for partial patient's tooth deformity of oral cavity impression tray among the prior art, has realized improving the application scope of dental impression tray.

The embodiment of the application provides a dental impression tray for department of stomatology, which comprises a handle and a tray main body arranged at one end of the handle, wherein the tray main body comprises a middle groove and two side grooves respectively arranged at two sides of the middle groove; the middle groove and the two side grooves are spliced to form a U-shaped groove; one side of the middle groove is fixedly connected with one side groove through an elastic connecting part; and an adjusting device for adjusting the connection angle of the middle groove and the two side grooves is arranged on one side of the tray main body.

Further, the elastic connecting part is a corrugated connecting groove; the connecting groove is made of rubber; the cross section of the connecting groove is the same as that of the middle groove.

Further, the adjusting device comprises an adjusting strip arranged on the handle; the length direction of the adjusting strip is perpendicular to the length direction of the handle; the adjusting strip is provided with an adjusting groove extending along the length direction of the adjusting strip; adjusting rods are hinged to one sides of the two side grooves; the two adjusting rods are respectively positioned at two sides of the handle; one end of the adjusting rod, which is far away from the side groove, penetrates through the adjusting groove; and a first positioning mechanism for fixing the position of the adjusting rod is arranged on the adjusting strip.

Further, a first thread section is arranged on the adjusting rod; the first positioning mechanism comprises a sliding seat arranged on the adjusting rod and a first locking nut in threaded connection with the first threaded section; the sliding seat is connected in the adjusting groove in a sliding manner; the first locking nuts are arranged in two numbers, and the two first locking nuts respectively abut against two sides of the sliding seat.

Further, the adjusting bar comprises a first movable rod and a second movable rod, the ends of the first movable rod and the second movable rod are hinged with each other; the handle penetrates through a hinged point of the first movable rod and the second movable rod and is connected with the side wall of the middle groove; and a second positioning mechanism used for fixing the first movable rod and the second movable rod is arranged on the handle.

Further, a second thread section is arranged on the handle; the second positioning mechanism comprises two second locking nuts which are in threaded connection with the second thread section; and the two second locking nuts are respectively and tightly abutted against two sides of a hinge point of the first movable rod and the second movable rod.

Furthermore, a first measuring mechanism is arranged at one end, far away from the side groove, of the adjusting rod; the first measuring mechanism is used for measuring the adjusting scale of the tray main body in the horizontal direction.

Furthermore, the first measuring mechanism comprises a fixed column rotatably connected to one end, far away from the side groove, of the adjusting rod, a sliding rod slidably arranged on the fixed column, a limiting block arranged at one end, far away from the handle, of the sliding rod, and an arc-shaped clamping plate arranged at one end, close to the handle, of the sliding rod; the length direction of the sliding rod is perpendicular to the length direction of the handle; a connecting spring is sleeved on the sliding rod and positioned between the fixed column and the limiting block; a scale column is arranged at one end of the handle, which is far away from the middle groove; and the two arc-shaped clamping plates are respectively clamped at two sides of the scale column.

Further, the sliding seat is made of rubber; the sliding seat comprises a sliding block connected in the adjusting groove in a sliding manner and positioning plates arranged on two sides of the sliding block; the cross-sectional area of the positioning plate is larger than that of the sliding block; the positioning plate is in sliding fit with the side wall of the adjusting strip.

Further, the height of the inner side wall of the tray main body is lower than that of the outer side wall of the tray main body.

The technical scheme provided in the embodiment of the application at least has the following technical effects or advantages:

1. due to the adoption of the structure of the middle groove and the side grooves, the tray main body can be deformed through the adjusting device, so that the shape of the tray main body can be adjusted, the application range of the tray main body is wider, the problem that the shape fixing application range of the tray main body in the prior art is small is effectively solved, and the application range of the tray main body is further widened.

2. Due to the adoption of the structure of the adjusting device, the relative position of the adjusting rod on the adjusting strip is moved, the shape of the tray main body is adjusted, the tray main body can be adapted to deformed teeth, the adjusting rod is fixed by the first positioning mechanism, the structure of the tray main body is fixed, impression is conveniently carried out on the teeth, the problem that the structure of the tray main body in the prior art is not easy to adjust is effectively solved, and the effect of conveniently adjusting the shape of the tray main body is achieved.

3. Owing to adopted the mechanism of first positioning mechanism, so can adjust the position of pole after, through screwing up two first lock nuts, make two first lock nuts screw up respectively in the both sides of adjusting the strip, press from both sides tightly the slide, make the relative position of adjusting the pole and adjusting the strip can not change, under the pulling of adjusting the pole to the side groove, make the contained angle between side groove and the middle groove change, can be adapted to the die of different teeth, effectively solved among the prior art and be not convenient for carry out the problem of locking after adjusting to side groove and middle groove, and then realized the effect of the side groove and the middle groove after the locking of being convenient for is adjusted.

4. Due to the adoption of the structure of the adjusting strip, the included angle between the first movable rod and the second movable rod can be adjusted, the angle between the side groove and the middle groove on the vertical plane can be adjusted, the adjusting range of the tray main body can be improved, the application range of the tray main body is further expanded, the middle part of the adjusting strip is positioned through the second positioning mechanism, the adjusting strip can keep the current state, the shape of the tray main body can be determined, the problem that the application range of the tray main body in the prior art is small is effectively solved, and the effect of further improving the application range of the tray main body is realized.

5. Owing to adopted first measuring mechanism's structure, so can learn the scale of adjusting through first measuring mechanism when the structure of adjusting the tray main part for the structural accuracy of adjusting is higher, when readjusting the regulation pole, the arc splint on the fixed column can press from both sides tightly on corresponding position, and then shows the number of graduations adjusted, has effectively solved too coarse problem when mediating to the tray main part among the prior art, and then has realized improving the effect of adjusting the accuracy of tray main part.

Drawings

Fig. 1 is a schematic structural view of the whole in the embodiment of the present application;

FIG. 2 is a schematic structural diagram of a tray body according to an embodiment of the present disclosure;

FIG. 3 is a schematic view of the overall structure of the present application with the protective cover hidden;

FIG. 4 is a schematic structural diagram of an adjusting device in an embodiment of the present application;

FIG. 5 is an enlarged schematic view at A in FIG. 4;

fig. 6 is a schematic structural diagram of a first positioning mechanism in an embodiment of the present application.

In the figure: 1. a handle; 11. a holding post; 2. a tray main body; 21. a through hole; 22. an intermediate tank; 23. a side groove; 24. connecting grooves; 3. an adjustment device; 31. an adjustment bar; 311. a first movable bar; 312. a second movable bar; 313. an adjustment groove; 314. a hinge sleeve; 315. a hinge ear; 32. adjusting a rod; 4. a first positioning mechanism; 41. a slide base; 411. a slider; 412. positioning a plate; 42. a first lock nut; 5. a second positioning mechanism; 51. a second lock nut; 6. a drive mechanism; 61. a drive screw; 62. a drive block; 7. a first measuring mechanism; 71. fixing a column; 72. a slide bar; 73. a limiting block; 74. an arc-shaped splint; 75. a connecting spring; 76. a scale post; 8. a second measuring mechanism; 81. a dial scale; 82. a pointer; 9. and (6) a protective sleeve.

Detailed Description

The embodiment of the application discloses provides a department of stomatology dental impression tray, can adjust the structure of tray main part 2 through adjusting device 3, changes the shape of being connected of side groove 23 and middle groove 22, and then can be applicable to more types or malformed tooth, is convenient for carry out the impression, has solved the unable problem that is suitable for some patient's tooth malformation of oral impression tray among the prior art, has realized improving the application scope of dental impression tray.

In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.

Referring to fig. 1, fig. 2, a department of stomatology dental impression tray, including handle 1 and tray main part 2, handle 1 is used for handheld, tray main part 2 is connected with handle 1, tray main part 2 is the U-shaped flute profile, and the inside wall height of tray main part 2 is less than the height of tray main part 2 lateral wall, through-hole 21 has been seted up to the tank bottom of tray main part 2, through-hole 21 is provided with a plurality ofly along the tank bottom interval of tray main part 2, the splendid attire has impression materials such as diatom mud, then put tray main part 2 into the oral cavity, press the impression material on the tooth with exerting oneself, a plurality of through-holes 21 design, the impression mud can not overflow and influence the user and normally breathe when can guaranteeing the interlock, be the tooth correction, the special apparatus who uses often in the restoration. During the operation, medical personnel hold operating handle 1, put into the mouth to the patient with the tray main part 2 that adjusts for the patient bites tray main part 2, and the impression material in tray main part 2 can gather patient's dental impression.

Referring to fig. 2, the tray main body 2 includes a middle groove 22, two side grooves 23 and two elastic connection portions, the middle groove 22, the two side grooves 23 and the two elastic connection portions are spliced to form a U-shaped groove, the middle groove 22 is a middle horizontal portion of the U-shaped groove, the side grooves 23 are L-shaped portions of the U-shaped groove, and one side of the middle groove 22 is fixedly connected with one side groove 23 through the elastic connection portion. The elastic connecting part is a corrugated connecting groove 24, the inside of the connecting groove 24 is of a hollow structure, the connecting groove 24 is made of rubber, the deformation degree is larger, the deformation capacity is stronger, the cross section of the connecting groove 24 is the same as that of the middle groove 22, and the middle groove 22 and the side groove 23 can be conveniently connected.

Referring to fig. 3 and 4, the adjusting device 3 is installed on the outer side of the tray body 2 to adjust the connection angle between the middle groove 22 and the two side grooves 23, so that the shape of the tray body 2 can be changed to be suitable for the deformed teeth. The adjusting device 3 comprises an adjusting strip 31, an adjusting rod 32, a first positioning mechanism 4 and a second positioning mechanism 5, the length direction of the handle 1 is perpendicular to the middle groove 22, the adjusting strip 31 is arranged on the outer side of the tray main body 2, and the length direction of the adjusting strip 31 is parallel to the horizontal part of the U-shaped groove of the tray main body 2, namely the length direction of the adjusting strip 31 is perpendicular to the length direction of the handle 1. The adjusting bar 31 comprises a first movable rod 311 and a second movable rod 312, opposite ends of the first movable rod 311 and the second movable rod 312 are hinged with each other, and one end of the handle 1 passes through a hinge point of the first movable rod 311 and the second movable rod 312 and is hinged with an outer side wall of the middle groove 22. The side walls of the first movable rod 311 and the second movable rod 312 are both provided with an adjusting groove 313, and the adjusting groove 313 extends along the length direction of the first movable rod 311 and the second movable rod 312. The two adjusting rods 32 are arranged, the two adjusting rods 32 are respectively located at two sides of the handle 1, one ends of the two adjusting rods 32 are respectively hinged to the outer side walls of the two side grooves 23, the other end of one adjusting rod 32 penetrates through the adjusting groove 313 on the first movable rod 311, and the other end of the other adjusting rod 32 penetrates through the adjusting groove 313 of the second movable rod 312. The first thread section is formed on each of the two adjusting rods 32. The first positioning mechanism 4 is mounted on the adjusting bar 31 and the adjusting rod 32, and is used for fixing the position of the adjusting rod 32. The second positioning mechanism 5 is installed at the position of the adjusting bar 31 and the handle 1, and is used for fixing an included angle between the first movable rod 311 and the second movable rod 312.

Referring to fig. 4 and 5, two first positioning mechanisms 4 are provided, and one positioning mechanism is provided corresponding to one adjustment lever 32. First positioning mechanism 4 includes slide 41, first lock nut 42, slide 41 sliding connection is in adjustment tank 313, and slide 41 is whole to be the rubber material, slide 41 includes slider 411, locating plate 412, slider 411 overlaps locates on adjusting pole 32, and slider 411 sliding connection is in adjustment tank 313, locating plate 412 is provided with two, and two locating plates 412 are fixed in the both sides of slider 411 respectively, the cross sectional area of locating plate 412 is greater than the cross sectional area of slider 411, two locating plate 412 one side in opposite directions respectively with the both sides wall sliding fit of regulation strip 31. The number of the first lock nuts 42 is two, and the two first lock nuts 42 respectively abut against two sides of the sliding base 41. The first lock nut 42 includes a lock sleeve and a lock ring, the lock sleeve is screwed to the first thread section on the adjustment rod 32, the lock ring is fixed on the outer side wall of the lock sleeve, and the lock ring is located on one side of the lock sleeve away from the adjustment bar 31, and the lock sleeve abuts against the positioning plate 412 to clamp the slide 41, so that the relative position of the slide 41 and the adjustment bar 31 is not easy to change.

Referring to fig. 4 and 5, the second positioning mechanism 5 includes two second locking nuts 51, a second thread section is provided on the handle 1, the two second locking nuts 51 are both connected to the second thread section in a threaded manner and are respectively located at two sides of the adjusting bar 31, and the two second locking nuts 51 are respectively abutted against two sides of a hinge point of the first movable rod 311 and the second movable rod 312. The second locking nut 51 comprises a locking sleeve and a locking ring, the locking sleeve is in threaded connection with the second thread section on the handle 1, the locking ring is fixed on the outer side wall of the locking sleeve, the locking ring is located on one side, away from the adjusting strip 31, of the locking sleeve, and the locking sleeve abuts against the side wall of the adjusting strip 31.

Referring to fig. 4, in order to facilitate the adjustment of the relative position of the adjustment lever 32 and the adjustment bar 31, a driving mechanism 6 is installed at both sides of the first movable bar 311 and the second movable bar 312 facing away from each other. The driving mechanism 6 comprises a driving screw 61 and a driving block 62, the length direction of the driving screw 61 is consistent with the length direction of the adjusting bar 31, one end of the driving screw 61 penetrates through the end part of the adjusting bar 31 and is in threaded connection with the corresponding side wall of one sliding seat 41, and the driving block 62 is fixed at the other end of the driving screw 61, so that the driving screw 61 can be conveniently rotated. Through rotating the driving block 62, the driving block 62 drives the driving screw 61 to rotate, and then drives the driving screw 61 to move along the length direction of the adjusting strip 31, so as to drive the sliding seat 41 to move, thereby facilitating the adjustment of the sliding seat 41, changing the distance between the adjusting rod 32 and the center of the adjusting strip 31, and pulling the side groove 23 to move.

Referring to fig. 4 and 6, a first measuring mechanism 7 is installed at one end of the adjusting rod 32 far from the side groove 23, and the first measuring mechanism 7 is used for measuring an adjusting scale of the tray main body 2 in the horizontal direction. In order to ensure the connection angle between each side groove 23 and the middle groove 22 and improve the accuracy of the first measuring mechanism 7, the first measuring mechanism 7 is mounted on each of the two adjusting rods 32, the first measuring mechanism 7 comprises a fixed column 71, a sliding rod 72, a limiting block 73 and an arc-shaped clamping plate 74, the fixed column 71 is rotatably connected to one end of the adjusting rod 32 far away from the side groove 23, and the length direction of the sliding rod 72 is parallel to the length direction of the adjusting strip 31. One end of the sliding rod 72 penetrates through the position, close to the end, of the fixed column 71, the sliding rod 72 is in sliding fit with the fixed column 71, the cross section of the sliding rod 72 is rectangular, the possibility that the sliding rod 72 and the fixed column 71 rotate can be reduced, and then the sliding rod 72 can be ensured to horizontally slide along the fixed column 71. The limiting block 73 is fixed at one end of the sliding rod 72 far away from the handle 1, and the arc-shaped clamping plate 74 is fixed at one end of the sliding rod 72 close to the handle 1. The handle 1 and the end of the adjusting strip 31 far away from the tray body 2 are fixedly provided with a scale column 76, and the middle part of the scale column 76 is a zero scale. The end of the scale column 76 far away from the handle 1 is fixed with a holding column 11, and an anti-slip rubber sleeve is sleeved on the holding column 11. The position cover that just is located between fixed column 71 and the stopper 73 on the slide bar 72 is equipped with connecting spring 75, connecting spring 75's one end and stopper 73 fixed connection, connecting spring 75's the other end and fixed column 71's lateral wall fixed connection, the inboard of arc splint 74 and the laminating of the lateral wall of scale post 76 under connecting spring 75's effect for arc splint 74 on two fixed columns 71 centre gripping respectively in the both sides of scale post 76. When the distance between the adjusting rod 32 and the handle 1 is larger, the fixing column 71 moves to one side close to the adjusting strip 31, and drives the sliding rod 72 to be close to the adjusting strip 31, so that the arc-shaped clamping plate 74 is clamped on the scale of the scale column 76 close to the adjusting strip 31; when the distance between the adjusting rod 32 and the handle 1 is smaller, the fixing column 71 moves to one side far away from the adjusting strip 31 to drive the sliding rod 72 to be far away from the adjusting strip 31, so that the arc-shaped clamping plate 74 is clamped on the scale of the scale column 76 far away from the adjusting strip 31; when the tray main body 2 is in a U-shaped groove shape, the length direction of the adjusting rod 32 and the length direction of the handle 1 are parallel to each other, and the arc-shaped clamping plate 74 is clamped at the middle part, namely the zero point, of the scale column 76.

Referring to fig. 4 and 5, in order to facilitate the measurement of the angles of the first and second

movable bars

311 and 312, a second measuring mechanism 8 is installed at a hinge point of the first and second

movable bars

311 and 312. One end of the first movable rod 311 is fixedly connected with a U-shaped hinge sleeve 314, one end of the second movable rod 312 is fixedly connected with a hinge lug 315, and the hinge lug 315 is inserted into the hinge sleeve 314 and is rotatably connected with the hinge sleeve 314. The handle 1 passes through the center of the rotary connection between the hinge sleeve 314 and the hinge lug 315. The second measuring mechanism 8 comprises a dial 81 and a pointer 82, the dial 81 is rotatably connected to one side of the hinge sleeve 314, the center of the dial 81 coincides with the hinge center of the hinge sleeve 314 and the hinge lug 315, a round hole is formed in the center of the dial 81, and the second locking nut 51 can penetrate through the round hole to be tightly abutted to the side wall of the adjusting strip 31. Two pointers 82 are provided, and the two pointers 82 are fixed to the same side of the first movable bar 311 and the second movable bar 312, respectively. The pointer 82 includes a pin fixed to one side of the first movable rod 311 or the second movable rod 312, and a needle fixed to an end of the pin away from the side wall of the adjustment strip 31. The tips of the two hands 82 are disposed opposite each other. The dial 81 is located inside the two needles and the needles are fitted to the side of the dial 81 remote from the dial 31. Two zero points are provided on the scale 81, located on both sides of the scale 81 in the radial direction, and when the first movable bar 311 and the second movable bar 312 are located on a straight line, the needle on the first movable bar 311 is directed to one zero point on the scale 81, and the needle on the second movable bar 312 is directed to the other zero point on the scale 81.

Referring to fig. 1, in order to improve the protection to adjusting device 3, fixed mounting has a protective sheath 9 on the lateral wall of tray main part 2, the material of protective sheath 9 is the rubber material, and protective sheath 9 has certain deformability, protective sheath 9 is the platykurtic, and both ends all are open structure, protective sheath 9's one end and two positions that are close to both sides respectively with the lateral wall fixed connection of two side grooves 23, the middle part position of protective sheath 9 one end and the lateral wall laminating of middle groove 22, protective sheath 9's the other end is close to a tip of first screw thread section, and protective sheath 9 cover is located two regulation poles 32 and handle 1 outsides, protective sheath 9 is when mediating tray main part 2 through adjusting device 3, can the adaptability warp.

The working principle of the embodiment of the application is as follows: when the tray main body 2 is in a U shape, the length directions of the two adjusting rods 32 are parallel to the length direction of the handle 1, the elastic connecting part is in a normal state, the two needles on the adjusting strips 31 point to zero points on the dial 81, and the arc-shaped clamping plates 74 on the two fixing columns 71 are clamped at the zero points on the scale columns 76.

When the structure of the tray main body 2 is adjusted, when the angles of the middle groove 22 and the side groove 23 on the horizontal plane need to be adjusted, the driving block 62 is rotated, so that the driving block 62 drives the driving screw 61 to rotate, the end part of the driving screw 61 far away from the driving block 62 moves towards the direction close to the handle 1, the sliding seat 41 is pushed to move towards the direction close to the handle 1 along the adjusting groove 313, and then the adjusting rod 32 is close to the handle 1, because the sliding seat 41 is connected in the adjusting groove 313 in a sliding way, the adjusting rod 32 can only move horizontally, the length direction of the adjusting rod 32 is always consistent with the length direction of the handle 1, because one end of the adjusting rod 32 is hinged with the outer side wall of the side groove 23, the outer side wall of the elastic connecting part is pulled to contract towards one side of the middle groove 22, because the elastic connecting part is corrugated, the inner side wall of the elastic connecting part expands towards the direction far away from the middle groove 22, thereby increasing the included angle of the inner side wall of the tray main body 2. After the included angle between the side groove 23 and the middle groove 22 is determined, the two first locking nuts 42 are tightly pressed against the two side walls of the adjusting strip 31 by tightening the first locking nuts 42. In the process that the adjusting rod 32 approaches the handle 1, the adjusting rod 32 displaces in the direction perpendicular to the adjusting strip 31, so as to drive the sliding rod 72 to move in the direction that the scale column 76 is far away from the handle 1, and under the action of the connecting spring 75, the arc-shaped clamping plate 74 is always clamped on the side wall of the scale column 76 far away from the handle 1.

Through the antiport driving block 62, make the driving block 62 drive the driving screw 61 antiport, make the one end of driving screw 61 to the direction of keeping away from handle 1 remove, and then drive slide 41 and keep away from handle 1, make adjust pole 32 to the direction horizontal migration of keeping away from handle 1, the one end pulling elastic connecting portion's of adjusting pole 32 lateral wall expands to the direction of keeping away from middle groove 22, and make elastic connecting portion's inside wall to the position shrink that is close to middle groove 22, and then make the inboard contained angle of lateral groove 23 and middle groove 22 reduce. After the included angle between the side groove 23 and the middle groove 22 is determined, the two first locking nuts 42 are tightly pressed against the two side walls of the adjusting strip 31 by tightening the first locking nuts 42. When the adjusting rod 32 moves away from the handle 1, the sliding rod 72 on the fixing post 71 is driven to move towards the direction close to the tray main body 2, so that the arc-shaped clamping plate 74 is clamped at the position where the scale post 76 is close to the handle 1.

When the angle of the tray main body 2 on the vertical plane needs to be adjusted, the two second locking nuts 51 are loosened to enable the first movable rod 311 and the second movable rod 312 to rotate relatively, the pointer 82 of the dial 81 is observed as required, the first movable rod 311 and the second movable rod 312 are folded to a required angle, and then the two second locking nuts 51 are locked to enable the two second locking nuts 51 to be tightly abutted against the hinge point of the first movable rod 311 and the second movable rod 312, so that the first movable rod 311 and the second movable rod 312 are locked and fixed.

The above description is only for the preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can substitute or change the technical solution and its concept of the present application within the technical scope disclosed in the present application, and shall be covered by the scope of the present application.

Claims

1. A dental impression tray for department of stomatology comprises a handle (1) and a tray main body (2) arranged at one end of the handle (1), and is characterized in that the tray main body (2) comprises a middle groove (22) and two side grooves (23) respectively arranged at two sides of the middle groove (22); the middle groove (22) and the two side grooves (23) are spliced to form a U-shaped groove;

one side of the middle groove (22) is fixedly connected with one side groove (23) through an elastic connecting part;

and an adjusting device (3) for adjusting the connection angle of the middle groove (22) and the two side grooves (23) is arranged on one side of the tray main body (2).

2. An oral dental impression tray according to claim 1, wherein the resilient connecting portion is a corrugated connecting groove (24); the connecting groove (24) is made of rubber; the connecting groove (24) has the same cross section as the intermediate groove (22).

3. An oral dental impression tray according to claim 1, wherein the adjustment means (3) comprises an adjustment strip (31) arranged on the handle (1); the length direction of the adjusting strip (31) is perpendicular to the length direction of the handle (1); the adjusting strip (31) is provided with an adjusting groove (313) extending along the length direction of the adjusting strip (31);

one side of each of the two side grooves (23) is hinged with an adjusting rod (32); the two adjusting rods (32) are respectively positioned at two sides of the handle (1); one end of the adjusting rod (32) far away from the side groove (23) penetrates through the adjusting groove (313);

the adjusting strip (31) is provided with a first positioning mechanism (4) for fixing the position of the adjusting rod (32).

4. An oral dental impression tray according to claim 3, wherein the adjustment lever (32) is provided with a first threaded section; the first positioning mechanism (4) comprises a sliding seat (41) arranged on the adjusting rod (32) and a first locking nut (42) in threaded connection with the first threaded section;

the sliding seat (41) is connected in the adjusting groove (313) in a sliding manner; the number of the first locking nuts (42) is two, and the two first locking nuts (42) are respectively abutted against two sides of the sliding seat (41).

5. A dental impression tray according to claim 3, wherein the adjustment strip (31) comprises a first movable bar (311) and a second movable bar (312) hinged at their ends to each other;

the handle (1) passes through a hinge point of the first movable rod (311) and the second movable rod (312) and is connected with the side wall of the middle groove (22);

and a second positioning mechanism (5) for fixing the first movable rod (311) and the second movable rod (312) is arranged on the handle (1).

6. An oral dental impression tray according to claim 5, wherein the handle (1) is provided with a second threaded section; the second positioning mechanism (5) comprises two second locking nuts (51) which are in threaded connection with the second thread section;

the two second locking nuts (51) are respectively abutted against two sides of a hinge point of the first movable rod (311) and the second movable rod (312).

7. An oral dental impression tray according to claim 3, wherein an end of the adjustment lever (32) remote from the lateral groove (23) is provided with a first measuring mechanism (7); the first measuring mechanism (7) is used for measuring the adjusting scale of the tray main body (2) in the horizontal direction.

8. The dental impression tray of claim 7, wherein the first measuring mechanism (7) comprises a fixed column (71) rotatably connected to one end of the adjusting rod (32) far away from the side groove (23), a sliding rod (72) slidably arranged on the fixed column (71), a limited block (73) arranged at one end of the sliding rod (72) far away from the handle (1), and an arc-shaped clamping plate (74) arranged at one end of the sliding rod (72) near the handle (1);

the length direction of the sliding rod (72) is perpendicular to the length direction of the handle (1); a connecting spring (75) is sleeved on the sliding rod (72) and positioned between the fixed column (71) and the limiting block (73);

a scale column (76) is arranged at one end of the handle (1) far away from the middle groove (22); the two arc-shaped clamping plates (74) are respectively clamped at two sides of the scale column (76).

9. An oral dental impression tray according to claim 4, wherein the slide (41) is of rubber material; the sliding seat (41) comprises a sliding block (411) connected in the adjusting groove (313) in a sliding manner and positioning plates (412) arranged on two sides of the sliding block (411);

the cross-sectional area of the positioning plate (412) is larger than that of the sliding block (411); the positioning plate (412) is in sliding fit with the side wall of the adjusting strip (31).

10. An oral dental impression tray according to claim 1, wherein the height of the inner side wall of the tray body (2) is lower than the height of the outer side wall of the tray body (2).