Root-cutting tooth extractor and dental surgical instrument

Abstract

The utility model discloses a root-cutting tooth extraction device and a dental surgical instrument, the root-cutting tooth extraction device comprises a shell, one end in the shell is rotatably provided with a driving wheel, the driving wheel comprises a plurality of latches arranged circumferentially, the other end of the shell is internally and elastically provided with a locking block in a sliding manner, and the locking block corresponds to the driving wheel in position and is in one-way sliding connection with the latches; the file needle is detachably arranged on the axis of the driving wheel. The driving wheel is arranged at one end in the shell, the driving wheel is connected with the file needle, the locking block which slides elastically is arranged at the other end of the shell, the locking block slides towards the clamping teeth arranged on the outer side of the driving wheel in a one-way mode, when the file needle and the broken teeth are used for drilling, the driving wheel is locked by the locking block when the shell is rotated in the preset direction, and the file needle drills holes. When the shell is reversely rotated, the driving wheel and the locking block rotate relatively, the position of the shell can be repeatedly adjusted in a limited space, the file needle is drilled into the broken root, assistance of additional medical instruments is not needed, and the requirement for the operation space is lowered.

Description

Technical Field

[0001] The utility model relates to the technical field of oral medical instruments, in particular to a root-cutting tooth extractor and a dental surgical instrument. Background Art

[0002] Tooth extraction is a commonly used treatment technique in dentistry. When performing tooth extraction in the oral cavity, the problem of root breakage is an important issue faced by tooth extraction technology. The broken root part of the tooth is adjacent to important anatomical structures such as the inferior alveolar nerve canal and the maxillary sinus, which increases the difficulty of root extraction. At the same time, in clinical medicine, cases in which tooth roots accidentally fall into the maxillary sinus, sublingual space, and inferior alveolar nerve canal during tooth extraction still occur from time to time, causing great pain to patients. Therefore, when extracting this type of tooth root, there is a risk of the tooth root falling into an important anatomical space.

[0003] In the prior art, when extracting a tooth with broken roots, it is necessary to use tools such as dental files and files to fix the tooth roots before extraction. Since the opening range of the human mouth is limited, the range of movement of medical equipment controlled by medical staff is limited, resulting in a very laborious process of extracting broken roots. It requires the use of multiple medical instruments to cooperate in the operation, which increases the patient's pain and the operation time.

[0004] Therefore, the prior art still needs to be improved and developed. Utility Model Content

[0005] In order to solve the problem in the prior art that medical staff need to use dental files, files and other medical instruments to fix the tooth roots before extracting teeth with broken roots, and the process is limited by the opening range of the patient's mouth and the left and right corners of the mouth, the operating range of the medical instruments is limited, resulting in the process of root extraction being time-consuming and laborious, increasing the patient's pain and the operation time, the utility model provides a root extraction device and dental surgical instruments.

[0006] The utility model is realized by the following technical solutions:

[0007] A root-cutting tooth extractor, wherein the root-cutting tooth extractor comprises:

[0008] A housing, wherein a driving wheel is rotatably disposed at one end of the housing, the driving wheel comprising a plurality of latch teeth arranged circumferentially, and a locking block is elastically slidably disposed at the other end of the housing, the locking block corresponds to the position of the driving wheel and is unidirectionally slidably connected with the latch teeth;

[0009] A file needle is detachably arranged on the axis of the driving wheel.

[0010] The root removal tooth extractor, wherein a plurality of the latch teeth are arranged in a circumferential array on the outside of the driving wheel, the latch teeth include a first engaging surface located on one side and a first guiding surface located on the other side, and the first guiding surface is arranged along a predetermined arc;

[0011] A second engaging surface and a second guiding surface are provided on one end of the locking block corresponding to the driving wheel, wherein the second engaging surface corresponds to the first engaging surface, and the second guiding surface corresponds to the first guiding surface.

[0012] The root removal tooth extractor, wherein the housing comprises a drive housing and a handle;

[0013] A sliding cavity is provided inside the handle, and the locking block is elastically slidably arranged in the sliding cavity;

[0014] The driving wheel is positioned and rotatably arranged in the driving housing, and the sliding cavity is intersected with the interior of the driving housing;

[0015] The drive housing and the handle are integrally formed.

[0016] The root removal tooth extractor, wherein a spring is provided on the end of the locking block away from the driving wheel, and the spring is slidably sleeved in the sliding cavity;

[0017] An adjusting rod is arranged on one end of the handle away from the driving shell, one end of the spring is connected to the locking block, and the other end of the spring is connected to the adjusting rod.

[0018] The root-cutting tooth extractor, wherein one end of the adjusting rod is threadably rotatably disposed in the sliding cavity, and the adjusting rod is used to adjust the pre-compression strength of the spring.

[0019] The root removal tooth extractor, wherein a mounting rod is provided on one side of the driving wheel along the axial direction of the driving wheel, the mounting rod passes through the shell and protrudes out of the outer side of the shell;

[0020] The root-cutting tooth extractor also includes a connecting piece, one end of which is detachably connected to the file, and the other end of which is detachably connected to the end of the mounting rod.

[0021] The root-cutting tooth extractor, wherein the connecting member comprises a first clamping hole arranged at one end, and the cross-sectional shape of the first clamping hole is a regular polygon;

[0022] A connecting portion is provided at the end of the mounting rod, the cross-sectional shape of the connecting portion is adapted to the first clamping hole, and the connecting portion is detachably sleeved in the first clamping hole.

[0023] The root removal tooth extractor, wherein the connecting member comprises a second clamping hole arranged in the middle, and the cross-sectional shape of the second clamping hole is circular;

[0024] The connecting piece includes a third clamping hole arranged at the other end, and the cross-sectional shape of the third clamping hole is a regular polygon;

[0025] A top plate and a clamping block are provided at one end of the file, wherein the top plate is fitted with the second clamping hole; and the clamping block is fitted with the third clamping hole.

[0026] The root removal tooth extractor, wherein the center points of the first clamping hole, the second clamping hole and the third clamping hole are located on the same straight line, and the first clamping hole, the second clamping hole and the third clamping hole are arranged through;

[0027] The diameter of the third clamping hole is smaller than the diameter of the second clamping hole, and the diameter of the second clamping hole is smaller than the diameter of the first clamping hole.

[0028] A dental surgical instrument, wherein the dental surgical instrument comprises the root cutting and tooth extraction device described in any one of the above.

[0029] The beneficial effects of the utility model are as follows: a driving wheel is arranged at one end inside the shell, the driving wheel is connected to the file, and an elastic sliding locking block is arranged at the other end. The locking block slides unidirectionally on the locking teeth arranged on the outer side of the driving wheel. When the file and the broken teeth are used for drilling, the driving wheel is locked by the locking block when the shell is rotated in a predetermined direction, and the file drills a hole. When the shell is rotated in the opposite direction, the driving wheel and the locking block rotate relative to each other. The position of the shell can be repeatedly adjusted in a limited space, and the file can be drilled into the broken root. No additional medical equipment is required, and the requirement for operating space is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a three-dimensional structural diagram of the root cutting and tooth extraction device of the utility model;

[0031] Figure 2 It is a structural sectional view of the root cutting tooth extractor of the utility model;

[0032] Figure 3 It is a schematic diagram of the structure of the driving wheel in the root cutting tooth extractor of the utility model;

[0033] Figure 4 It is a three-dimensional structural schematic diagram of the file in the root cutting and tooth extraction device of the utility model;

[0034] Figure 5 It is a structural sectional view of a connecting piece in the root cutting tooth extractor of the utility model.

[0035] exist Figures 1 to 5In: 100, shell; 110, drive shell; 120, handle; 121, slide cavity; 200, drive wheel; 210, latch tooth; 211, first engaging surface; 212, first guide surface; 220, mounting rod; 221, connecting part; 300, locking block; 301, second engaging surface; 302, second guide surface; 310, spring; 320, adjusting rod; 400, file needle; 410, top plate; 420, latch block; 500, connecting piece; 510, first latch hole; 520, second latch hole; 530, third latch hole. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and effect of the utility model clearer and more specific, the utility model is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0037] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0038] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0039] In the prior art, when extracting a tooth with broken roots, it is necessary to use tools such as dental files and files to fix the tooth roots before extraction. Since the opening range of the human mouth is limited, the range of movement of medical equipment controlled by medical staff is limited, resulting in a very laborious process of extracting broken roots. It requires the use of multiple medical instruments to cooperate in the operation, which increases the patient's pain and the operation time.

[0040] Based on the above problems in the prior art, the utility model provides a root cutting tooth extractor, such as Figure 1 and Figure 2As shown, the root removal tooth extractor comprises: a shell 100, a driving wheel 200 is rotatably arranged at one end of the shell 100, the driving wheel 200 comprises a plurality of latch teeth 210 arranged circumferentially, a locking block 300 is elastically slidably arranged at the other end of the shell 100, the locking block 300 corresponds to the position of the driving wheel 200, and is unidirectionally slidably connected to the latch teeth 210; and a file 400, the file 400 is detachably arranged on the axis of the driving wheel 200.

[0041] The utility model arranges a driving wheel 200 at one end of a shell body 100, the driving wheel 200 is connected to a file 400, and an elastically sliding locking block 300 is arranged at the other end, the locking block 300 slides unidirectionally on the locking teeth 210 arranged on the outer side of the driving wheel 200, when the file 400 is used to drill with the broken teeth, the driving wheel 200 is locked by the locking block 300 when the shell body 100 is rotated in a predetermined direction, and the file 400 drills a hole, and the driving wheel 200 and the locking block 300 rotate relatively when the shell body 100 is rotated in the reverse direction, the position of the shell body 100 can be repeatedly adjusted in a limited space, and the file 400 can be drilled into the broken root, which does not require the assistance of additional medical equipment and reduces the requirement for the operating space.

[0042] In the above embodiment, if Figure 1 and Figure 2 As shown, the main body of the root removal tooth extractor of the present invention is composed of a shell 100, a driving structure arranged inside the shell 100, and a file 400, wherein the shell 100 is used to wrap and fix the driving structure. Specifically, in this embodiment, the driving structure is a driving wheel 200, and the driving wheel 200 is positioned and rotatably arranged inside one end of the shell 100. A plurality of latch teeth 210 are arranged around the outer circumference of the driving wheel 200. At the other end of the shell 100, a locking block 300 is arranged. The locking block 300 is slidably and elastically arranged. The slider corresponds to the position of the latch teeth 210 of the driving wheel 200 and is unidirectionally slidably connected. It can be engaged with the latch teeth 210 in a predetermined direction, and can be relatively rotated by elastically giving way in another predetermined direction.

[0043] The file needle 400 is detachably disposed at the axis of the driving wheel 200. Figure 1 In the position shown in the figure, when the broken root tooth is actually extracted, the file 400 is used to drill holes in the broken root and form a combination to provide a force-applying structure to extract the broken root. In the prior art, the drilling operation of the file 400 is affected by the degree of opening of the patient's oral cavity and the position of the cheeks on both sides, and the drilling combination process is very inconvenient. In the present utility model, as shown in the figure, the broken root is drilled and formed into a combination to provide a force-applying structure to extract the broken root. Figure 2As shown, by means of the driving wheel 200 and the elastic locking block 300 structure arranged inside the housing 100, the driving wheel 200 and the locking block 300 are locked when the file 400 is in the drilling direction. The medical staff can synchronously control the file 400 to rotate a predetermined angle through the housing 100 to perform drilling. After the file 400 moves to a certain distance and is blocked by the cheek of the patient, the housing 100 is rotated in the opposite direction. At this time, the file 400 and the broken tooth combination file 400 do not rotate, and correspondingly the driving wheel 200 does not rotate. The housing 100 rotates relative to the driving wheel 200, causing the locking block 300 and the driving wheel 200 to rotate. The positional relationship changes. Since the locking block 300 and the driving wheel 200 are set to slide in one direction, the housing 100 can be rotated to the other side under the control of the personnel, so that the locking block 300 is correspondingly engaged with the other locking tooth 210. When the housing 100 is rotated in the opposite direction, the locking block 300 locks the driving wheel 200, driving the driving wheel 200 and the file 400 to rotate synchronously. The reciprocating process can achieve the effect of drilling the file 400 to a predetermined size inside the broken root, so that the broken root is firmly combined with the file 400 or drilled into the bottom of the broken root of the tooth to loosen the broken root, thereby achieving the effect of subsequent root extraction.

[0044] In this embodiment, compared with the prior art, no additional medical equipment is required, and only a smaller operating space is required to realize the operation of drilling holes in the broken roots with the file 400, which can effectively improve the efficiency of the extraction operation, and facilitate the control of the broken roots to prevent the broken roots from falling into the mouth.

[0045] Based on the above embodiments, in a specific implementation of the present utility model, Figure 2 As shown, when the driving wheel 200 is actually set, a plurality of latch teeth 210 are arranged in a circumferential array on the outer side of the driving wheel 200. Specifically, when the driving wheel 200 is actually set, the latch teeth 210 include a first engaging surface 211 located on one side and a first guide surface 212 located on the other side. Specifically, the first engaging surface 211 is a plane perpendicular to the central axis of the driving shaft, and the first guide surface 212 is arranged along a predetermined arc. Correspondingly, a second engaging surface 301 and a second guiding surface 302 are also provided on the end of the locking block 300 corresponding to the driving wheel 200, wherein the second engaging surface 301 is also a plane, and the second engaging surface 301 corresponds to the first engaging surface 211. When the locking block 300 is located at a predetermined position of the driving wheel 200, it can cooperate with the first engaging surface 211 to form a one-way locking effect; the second guiding surface 302 is adapted to the first guiding surface 212, and can easily slide relative to the first guiding surface 212. Therefore, when the medical staff rotates the shell 100 with another hand, the relative angle between the shell 100 and the driving wheel 200 can be changed through the cooperation of the first guiding surface 212 and the second guiding surface 302, thereby achieving the effect of the engaging of the latching teeth 210 corresponding to different latching tooth 210 positions.

[0046] In another embodiment of the present invention, Figure 2 As shown, for ease of understanding, in this embodiment, the housing 100 is divided into a drive housing 110 and a handle 120. Those skilled in the art should understand that the distinction between the drive housing 110 and the handle 120 is only for the corresponding parts of the structure, and does not limit the actual structure shape, etc. In this embodiment, the drive wheel 200 is arranged inside the drive housing 110, and the handle 120 is located on one side of the drive housing 110. A sliding cavity 121 is arranged inside the handle 120. The locking block 300 is elastically slidably arranged in the sliding cavity 121, and is used to form an elastic engagement with the latch 210 on the drive wheel 200. The drive wheel 200 is positioned and rotatably connected with the drive housing 110, that is, the position of the rotating shaft of the drive wheel 200 is fixed. When the drive wheel 200 and the latch 210 rotate relative to each other, it actually provides a space for the latch 210 to slide in the sliding cavity 121 and is reset through elastic reset.

[0047] In this embodiment, the sliding cavity 121 is intersected with the interior of the driving shell 110. In actual production, the driving shell 110 and the handle 120 can be integrally formed to ensure a stable matching relationship between the driving wheel 200 and the locking block 300 during use.

[0048] Based on the above embodiments, in a specific implementation of the present utility model, Figure 2 As shown, a spring 310 is provided on the side of the locking block 300 facing away from the driving wheel 200. The spring 310 is slidably sleeved inside the sliding cavity 121. The spring 310 is used to provide elastic potential energy for the locking block 300, so that the corresponding end of the locking block 300 and the driving wheel 200 abuts against the latching tooth 210 of the driving wheel 200 to form a one-way latching matching relationship. At the same time, the spring 310 is also used to provide a space for the movement of the locking block 300 to meet the avoidance needs when the locking block 300 and the driving wheel 200 rotate relative to each other.

[0049] In this embodiment, an adjusting rod 320 is further provided on the end of the handle 120 facing away from the drive shell 110. One end of the spring 310 is connected to the locking block 300, and the other end is connected to the adjusting rod 320, thereby fixing the position of the spring 310. In this embodiment, when the position of the adjusting rod 320 and the handle 120 is fixed, the position of one end of the spring 310 is fixed. In this case, the elastic stress of the spring 310 on the locking block 300 is also determined accordingly. The elastic force of the spring 310 on the locking block 300 can be kept stable through the adjusting rod 320.

[0050] Further, in a specific embodiment, Figure 2As shown, the production personnel can also set a thread on the end of the above-mentioned adjusting rod 320 located in the handle 120, and correspondingly set an adaptive thread inside the sliding cavity 121 of the handle 120, so that the end of the adjusting rod 320 located in the sliding cavity 121 has a position adjustment function, that is, by rotating the adjusting rod 320, the specific length of the adjusting rod 320 located in the sliding cavity 121 can be changed, thereby playing the effect of adjusting the elastic strength of the spring 310 on the locking block 300. In this embodiment, when the adjusting rod 320 is adjusted toward the outside of the handle 120, the movement range of the spring 310 in the corresponding sliding cavity 121 becomes larger. At this time, a part of the elastic potential energy is released, that is, the pressure of the locking block 300 on the latching teeth 210 on the driving wheel 200 is reduced. In this case, the medical staff can more easily drive the shell 110 and the shell 100 and the driving wheel 200 to rotate relative to each other; when the adjusting rod 320 is adjusted inside the handle 120, the movement range of the spring 310 in the corresponding sliding cavity 121 becomes smaller. At this time, the spring 310 is further compressed, so that the pressure of the locking block 300 on the latching teeth 210 on the driving wheel 200 increases. In this case, the shell 100 is not easy to rotate relative to the driving wheel 200. The medical staff can change the position of the adjusting rod 320 according to the actual use needs and the actual situation of the patient, so as to achieve the effect of targeted adjustment and easy operation.

[0051] In another embodiment of the present invention, Figure 3 As shown, in order to realize the installation of the file 400 on one side of the driving wheel 200, in this embodiment, a mounting rod 220 is further provided on one side of the driving wheel 200 along the direction of the axis of the driving wheel 200. The mounting rod 220 is provided through the housing 100, and the mounting rod 220 protrudes out of the outer side of the housing 100 and is rotatably connected to the corresponding part of the housing 100. Based on the arrangement of the mounting rod 220, as shown in FIG. Figure 1 As shown, in this embodiment, the root tooth extractor also includes a connecting piece 500, which is used to connect the mounting rod 220 and the file 400. Specifically, during actual installation, one end of the connecting piece 500 is detachably connected to the file 400, and the other end is detachably connected to the end of the mounting rod 220. By providing the connecting piece 500, medical staff can not only replace the file 400, but also ensure that the file 400 rotates synchronously with the driving wheel 200 during actual use, so as to achieve the effect of driving the file 400 to rotate and drill a hole in the broken tooth when the medical staff drives the shell 110 and the housing 100.

[0052] Furthermore, if Figure 3 and Figure 5As shown, the connecting piece 500 includes a first clamping hole 510 set at one end, and the first clamping hole 510 is used to connect with the end of the mounting rod 220. In this embodiment, in order to ensure that the file 400 and the driving wheel 200 rotate synchronously, the cross-sectional shape of the first clamping hole 510 should be set to a regular polygon. Correspondingly, a connecting portion 221 is set at the end of the mounting rod 220. The cross-sectional shape of the connecting portion 221 is adapted to the cross-sectional shape of the first clamping hole 510. When installing, the connecting portion 221 is sleeved inside the first clamping hole 510 to form a clamping and fixed style. In actual use, since the moving direction of the shell 100 is left and right swinging, no component force along the axial direction of the mounting rod 220 is generated. At the same time, since the medical staff controls the file 400 to apply force to the internal direction of the root cutting, which is opposite to the disassembly direction of the connecting portion 221 and the first clamping hole 510, the connecting piece 500 can maintain a combined state with the connecting portion 221 on the mounting rod 220 during actual use.

[0053] Furthermore, if Figure 4 and Figure 5 As shown, in order to connect the connecting piece 500 with the file 400, the connecting piece 500 also includes a second clamping hole 520 set in the middle, and the cross-sectional shape of the second clamping hole 520 is circular. In addition, the connecting piece 500 also includes a third clamping hole 530 set at the other end, and the cross-sectional shape of the third clamping hole 530 is a regular polygon; correspondingly, one end of the file 400 is provided with a top plate 410 and a clamping block 420, wherein the top plate 410 is adapted to the second clamping hole 520, and its cross-sectional shape is a circle of corresponding size, and the clamping block 420 is adapted to the third clamping hole 530, and its cross-sectional shape is a regular polygon of corresponding size. During actual installation, the file 400 can penetrate the connecting piece 500 in the direction of its needle tip and move to a predetermined position, so that the clamping block 420 and the third clamping hole 530 form a corresponding fit, and the top plate 410 and the second clamping hole 520 form a corresponding fit, thereby achieving the effect of fixing one end of the file 400 inside the connecting piece 500.

[0054] In this embodiment, the cooperation between the second clamping hole 520 and the top plate 410 limits the swing of the file 400 in the horizontal direction. At the same time, after the first clamping hole 510 on the connecting piece 500 is combined with the connecting part 221 at the end of the mounting rod 220, the connecting part 221 forms a limit in the vertical direction for the top plate 410, thereby fixing the file 400 inside the connecting piece 500; on the other hand, the cooperation between the third clamping hole 530 and the clamping block 420 limits the relative rotation of the file 400 and the connecting piece 500. On the basis of the first clamping hole 510 limiting the relative rotation of the mounting rod 220, it is ensured that the file 400 and the driving wheel 200 can rotate synchronously, thereby ensuring the drilling effect of the file 400.

[0055] In the above embodiment, if Figure 5 As shown, when the first clamping hole 510, the second clamping hole 520 and the third clamping hole 530 are specifically set, the center points of their cross sections should be set on the same straight line, and the first clamping hole 510, the second clamping hole 520 and the third clamping hole 530 should be set through to meet the requirements when the file 400 is installed. In addition, it should be ensured that the diameter of the third clamping hole 530 is smaller than the diameter of the second clamping hole 520, and the diameter of the second clamping hole 520 is smaller than the diameter of the first clamping hole 510. Then, when the file 400 is installed, the clamping block 420 on the file 400 can be engaged with the third clamping hole 530, and the top plate 410 can cooperate with the second clamping hole 520 to form a limit. When the third clamping hole 530 is combined with the connecting part 221, the file 400 is locked inside the connecting piece 500.

[0056] Based on the above embodiments, combined with Figure 1 , Figure 2 and Figure 3 The actual use process of the utility model root removal tooth extractor is as follows:

[0057] First, the file 400 is connected to the mounting rod 220 through the connecting piece 500 as described above, and then the tip of the file 400 is brought into contact with the cut root surface of the patient's tooth. Figure 2 Under the structural setting shown, the handle 120 is rotated clockwise to control the file 400 to drill the root of the patient's tooth (in this state, the driving wheel 200 and the locking block 300 are in a locked state). When the handle 120 moves to a certain angle and the movement is restricted, the medical staff rotates the handle 120 counterclockwise. During this process, the first guide surface 212 of the locking tooth 210 and the second guide surface 302 of the locking block 300 slide relative to each other. During the process, the locking block 300 slides and compresses the spring 310 to make way. After rotating to a certain angle, the locking block 300 is reset under the drive of the spring 310, thereby achieving It is locked with another tooth 210 again. After the medical staff moves the required angle, the locking block 300 is locked with the corresponding tooth 210. During this process, since the position of the driving wheel 200 has not changed, the file 400 still stays at the previous drilling position. At this time, the handle 120 is rotated clockwise again to make the file 400 rotate synchronously to continue the next drilling process. The above operation is repeated until the tip of the file 400 drills into the bottom of the broken root of the tooth. The tooth is loosened during the drilling process, and the broken root can be directly extracted by pulling the handle 120.

[0058] Based on the above embodiments, the utility model also provides a dental surgical instrument, which includes the root-cutting tooth extractor described in any one of the above embodiments, wherein the root-cutting tooth extractor includes: a housing, a driving wheel is rotatably arranged at one end in the housing, the driving wheel includes a plurality of circumferentially arranged latches, a locking block is elastically slidably arranged in the other end of the housing, the locking block corresponds to the position of the driving wheel, and is unidirectionally slidably connected with the latches; and a file, the file is detachably arranged on the axis of the driving wheel. The utility model arranges a driving wheel at one end in the housing, the driving wheel is connected to the file, and an elastically slidable locking block is arranged at the other end, the locking block slides unidirectionally on the latches arranged on the outside of the driving wheel. When the file is used to drill with the broken tooth, the driving wheel is locked by the locking block when the housing is rotated in a predetermined direction, the file drills a hole, and the driving wheel and the locking block rotate relative to each other when the housing is rotated in the reverse direction, so that the housing position can be repeatedly adjusted in a limited space, and the file is drilled into the inside of the root-cutting root, which does not require additional medical equipment assistance and reduces the requirements for operating space.

[0059] In summary, the utility model provides a root-cutting tooth extractor and a dental surgical instrument, wherein the root-cutting tooth extractor comprises: a housing, a driving wheel is rotatably arranged at one end of the housing, the driving wheel comprises a plurality of circumferentially arranged latching teeth, a locking block is elastically slidably arranged at the other end of the housing, the locking block corresponds to the position of the driving wheel, and is unidirectionally slidably connected with the latching teeth; and a file, the file is detachably arranged on the axis of the driving wheel. The utility model arranges a driving wheel at one end of the housing, the driving wheel is connected to the file, and an elastically slidable locking block is arranged at the other end, the locking block slides unidirectionally on the latching teeth arranged on the outside of the driving wheel. When the file is used to drill with the broken tooth, the driving wheel is locked by the locking block when the housing is rotated in a predetermined direction, the file drills a hole, and the driving wheel and the locking block rotate relative to each other when the housing is rotated in the reverse direction. The housing position can be repeatedly adjusted in a limited space, and the file is drilled into the inside of the root-cutting tooth, which does not require the assistance of additional medical equipment and reduces the requirements for the operating space.

[0060] It should be understood that the application of the present invention is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made according to the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A root-cutting tooth extractor, characterized in that: The root removal tooth extractor comprises: A housing, wherein a driving wheel is rotatably disposed at one end of the housing, the driving wheel comprising a plurality of latch teeth arranged circumferentially, and a locking block is elastically slidably disposed at the other end of the housing, the locking block corresponds to the position of the driving wheel and is unidirectionally slidably connected with the latch teeth; A file needle is detachably arranged on the axis of the driving wheel.

2. The root removal tooth extractor according to claim 1, characterized in that: A plurality of the latch teeth are arranged in a circumferential array on the outer side of the driving wheel, and the latch teeth include a first engaging surface located on one side and a first guiding surface located on the other side, and the first guiding surface is arranged along a predetermined arc; A second engaging surface and a second guiding surface are provided on one end of the locking block corresponding to the driving wheel, wherein the second engaging surface corresponds to the first engaging surface, and the second guiding surface corresponds to the first guiding surface.

3. The root removal tooth extractor according to claim 1, characterized in that: The housing includes a drive housing and a handle; A sliding cavity is provided inside the handle, and the locking block is elastically slidably arranged in the sliding cavity; The driving wheel is positioned and rotatably arranged in the driving housing, and the sliding cavity is intersected with the interior of the driving housing; The drive housing and the handle are integrally formed.

4. The root removal tooth extractor according to claim 3, characterized in that: A spring is arranged on one end of the locking block away from the driving wheel, and the spring is slidably sleeved in the sliding cavity; An adjusting rod is arranged on one end of the handle away from the driving shell, one end of the spring is connected to the locking block, and the other end of the spring is connected to the adjusting rod.

5. The root removal tooth extractor according to claim 4, characterized in that: One end of the adjusting rod is threadably disposed in the sliding cavity, and the adjusting rod is used to adjust the pre-compression strength of the spring.

6. The root removal tooth extractor according to claim 1, characterized in that: A mounting rod is provided on one side of the driving wheel along the axial direction of the driving wheel, and the mounting rod passes through the shell and protrudes out of the outer side of the shell; The root-cutting tooth extractor also includes a connecting piece, one end of which is detachably connected to the file, and the other end of which is detachably connected to the end of the mounting rod.

7. The root removal tooth extractor according to claim 6, characterized in that: The connecting piece comprises a first clamping hole arranged at one end, and the cross-sectional shape of the first clamping hole is a regular polygon; A connecting portion is provided at the end of the mounting rod, the cross-sectional shape of the connecting portion is adapted to the first clamping hole, and the connecting portion is detachably sleeved in the first clamping hole.

8. The root removal tooth extractor according to claim 7, characterized in that: The connecting piece comprises a second clamping hole arranged in the middle, and the cross-sectional shape of the second clamping hole is circular; The connecting piece includes a third clamping hole arranged at the other end, and the cross-sectional shape of the third clamping hole is a regular polygon; A top plate and a clamping block are provided at one end of the file, wherein the top plate is fitted with the second clamping hole; and the clamping block is fitted with the third clamping hole.

9. The root removal tooth extractor according to claim 8, characterized in that: The center points of the first clamping hole, the second clamping hole and the third clamping hole are located on the same straight line, and the first clamping hole, the second clamping hole and the third clamping hole are arranged through; The diameter of the third clamping hole is smaller than the diameter of the second clamping hole, and the diameter of the second clamping hole is smaller than the diameter of the first clamping hole.

10. A dental surgical instrument, characterized in that: The dental surgical instrument comprises the root removal tooth extraction device as described in any one of claims 1-9.

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