CN112190351B

CN112190351B - Fixing device for tooth extraction

Info

Publication number: CN112190351B
Application number: CN202010979030.7A
Authority: CN
Inventors: 张雪峰; 黄海云; 张静; 徐庆鸿
Original assignee: Sichuan University
Current assignee: Sichuan University
Priority date: 2020-09-17
Filing date: 2020-09-17
Publication date: 2021-06-04
Anticipated expiration: 2040-09-17
Also published as: CN112190351A

Abstract

The invention relates to a fixing device for tooth extraction, the fixing device is fixed in the tooth; the fixing device comprises an operation part, a screw part and a straight handle part. A hand tool is used to apply force to the fixation device in order to fix the fixation device and/or to extract the tooth together with the fixation device. By using the fixing device, the teeth can be easily extracted while not injuring the patient as much as possible.

Description

Fixing device for tooth extraction

Technical Field

The present invention relates to a fixture for tooth extraction, which can conveniently extract a tooth while minimizing damage to a patient.

Background

In a conventional dental treatment process, when a tooth extraction is performed, it is common to insert forceps into a periodontal membrane region around a tooth root between a tooth and an alveolar bone to displace the tooth, and grasp the tooth with the forceps and pull it out. However, if inadvertently pushed into the tooth while prying the tooth with forceps, it may damage nerves and damage blood vessels and cause more bleeding, and even more alveolar bone collapse.

Therefore, there is a need to design a fixture that can be easily pulled out of a tooth during a dental treatment without damaging a patient as much as possible.

Disclosure of Invention

The invention is based on the object of providing a fixture for tooth extraction, which can be fixed to a tooth and/or can be extracted together with the fixture by means of a hand tool. Meanwhile, the invention also provides an operation method using the fixing device, so that the teeth can be conveniently pulled out on the premise of not damaging a patient.

In order to achieve the above object, the present invention provides a fixture for tooth extraction, comprising: an operating portion, a threaded portion, and a straight shank portion; the fixture is fixed to the tooth and/or the tooth is extracted together with the fixture using a hand tool.

Further, the diameter of the operating part is larger than that of the threaded part, the diameter of the threaded part is larger than that of the straight shank part, and a concave part matched with the hand tool for use is further arranged on the operating part.

Further, the fixing device is further provided with a connecting part, and the diameter of the connecting part is smaller than the diameters of the threaded part and the operating part.

Further, the threaded portion is located between the operating portion and the straight shank portion.

Further, the straight shank portion is located between the operating portion and the threaded portion.

Further, the fixing device is provided with an axial channel along the axial direction; optionally, a radial channel is further formed along the radial direction of the straight shank portion, and the diameter of the axial channel is greater than or equal to that of the radial channel; optionally, the number of the radial channels is greater than or equal to one; optionally, the radial channels are arranged in a uniform or non-uniform manner along the axial direction of the straight shank; optionally, a chamfer portion matched with the hand tool is further formed at an opening of the axial passage on the operation portion.

Further, the hand tool includes a driving part that applies a driving force to the fixing device, a conveying part that conveys an adhesive to the fixing device, and a housing; wherein the driving part comprises a transmission part connected with the fixing device and a transmission part connected with the power device.

Further, the transmission component comprises a transmission part matched with the concave part and a driven part matched with the transmission component; one end of the transmission component is matched with the driven part through the driving part, and the other end of the transmission component is in transmission connection with the power device.

Further, the conveying component comprises an end part matched with the fixing device and a pipeline part connected with the pumping device; wherein one end of the end part is provided with a conveying part matched with the chamfer part, the adhesive is conveyed to the fixing device by the conveying part, and the other end of the end part is matched with the shell.

Further, the housing is provided with a cavity, and the driving component and part or the whole of the conveying component are positioned in the cavity; one end of the shell is provided with a boss which is matched with the end part, the other end of the shell is provided with an opening, and the fixing device can penetrate through the opening and is matched with the driving part.

Further, the opening is provided with a plurality of protrusions towards the center, the protrusions can enable the fixing device to pass through, and can prevent the fixing device from being separated from the shell, so that the teeth can be pulled out by the protrusions.

Compared with the prior art, the invention has the beneficial effects that:

in the scheme of this application, through setting up fixing device and the hand tool who adapts to it to can conveniently pull out the tooth when not injuring the disease as far as possible. Wherein, conveniently fix it and make things convenient for hand tool to extract the tooth simultaneously through set up screw thread portion on fixing device. Furthermore, the channel is arranged on the fixing device, so that the adhesive can be conveniently injected, the stress of the teeth is strengthened, and the teeth can be conveniently pulled out by a manual tool. Furthermore, the thread part is arranged at the lower part of the straight handle part, and the adhesive is injected from the position of the thread surface at the upper part of the tooth, so that the stress of the tooth is optimized, and the tooth can be conveniently pulled out by a manual tool. Meanwhile, the hand tool matched with the fixing device is simple and convenient to operate, has the functions of fastening the fixing device, injecting the adhesive and extracting the teeth, is compact in structure, and meanwhile, the working efficiency is obviously improved.

Description of the drawings:

FIG. 1 is a schematic view of the overall construction of the tooth extraction system tool of the present invention;

FIG. 2 is a cross-sectional view of the tooth extraction system tool of the present invention taken from an intermediate position;

FIG. 3 is a schematic view of the hand tool of the present invention as viewed from one end of the tooth extraction system tool;

FIG. 4 is a schematic structural view of the housing of the present invention;

FIG. 5 is a schematic view of the structure of a transfer member according to the present invention;

FIG. 6 is a schematic view of the fixing device of the present invention;

FIG. 7 is a cut-away view of the fastening device of the present invention;

FIG. 8 is a schematic structural view of a fixing device according to another embodiment of the present invention;

FIG. 9 is a schematic view of the structure of the tooth openings of the present invention;

FIG. 10 is a schematic view of a hand tool operated fixture according to the present invention;

FIG. 11 is a schematic view of a hand tool operated fixture according to the present invention;

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments.

Thus, the following detailed description of the embodiments of the invention is not intended to limit the scope of the invention as claimed, but is merely representative of some embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the embodiments of the present invention and the features and technical solutions thereof may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", and the like refer to orientations or positional relationships based on those shown in the drawings, or orientations or positional relationships that are conventionally arranged when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and such terms are used for convenience of description and simplification of the description, and do not refer to or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

As shown in fig. 1 to 3, which show a fixture for tooth extraction comprising a hand tool 1 and a fixture 6, fig. 1 to 3 show a head structure of the hand tool only by way of example, wherein no part to be gripped by an operator is shown, which is not to be understood as a limitation of the hand tool. The hand tool comprises a housing 2, a transport part 3, a drive part, a bearing 7, wherein the drive part comprises a transmission part 4 and a transmission part 5.

The specific structure of the hand tool shown in fig. 1-4, wherein the housing 2 is provided with a cavity 25, and the driving member, a part of the conveying member 3 or the whole is arranged in the cavity 25 as a mounting cavity for the above components. A projection 21 is provided at the upper end of the cavity 25, which projection 21 is able to partially support the transport element 3. At the other end opposite said boss 21, an opening 24 is provided, said opening 24 being dimensioned such that the fixture 6 can be passed through the opening 24 and engaged by the driving member, thereby enabling the hand tool to operate the fixture 6. Meanwhile, the opening 24 is provided with a plurality of protrusions 22 toward the center, and the protrusions 22 are engaged with the operating part 61 of the fixture 6, so that the operator can extract the teeth using the hand tool. As shown in fig. 2-4, the housing 2 further has a rod-like member 23 connected to an operating end held by an operator, and the operating end is provided with a power unit (not shown) for supplying power for the desired operation of the hand tool. Further, a pumping device (not shown) is provided at the operating end, which can pump the adhesive for the hand tool as desired.

As shown in fig. 1-2, the driving member comprises a transmission member 4 and a transmission member 5, wherein one end 42 of the transmission member 4 is in transmission connection with the power device so as to transmit the required operating force for the manual tool; the other end of the transmission member 4 is used as a driving part 41 to be matched with a driven part 51 of the transmission member 5, so that the transmission member 5 is driven to rotate, and further, the fixing device is provided with driving force. In this embodiment, the driving part 41 and the driven part 51 are implemented as a bevel gear-like structure. Alternatively, other embodiments for transmitting drive force may also be employed, including but not limited to worm gears, hydraulics, and the like. Referring to fig. 5, the specific structure of the transmission member 5 in the present embodiment is further shown. The transmission member 5 includes a driven portion 51 which is in driving engagement with the driving portion 41, a transmission portion 52 which is in engagement with the recess 68 of the fixing device 6, and an opening 53, and the opening 53 allows the conveyance member 3 to pass therethrough and is in engagement with the chamfered portion 67 of the fixing device 6, thereby allowing the adhesive to be easily conveyed. Several projections 54 are arranged uniformly in the circumferential direction on the inside of the transmission part 52, which projections 54 form a form fit with the recesses 68 of the fixing device 6, so that the driving force can be transmitted. In the present embodiment, the convex portion 54 is configured as a circular arc-shaped protrusion, and correspondingly, the concave portion 68 is configured as a circular arc-shaped concave portion matching with the circular arc-shaped protrusion. However, without being limited to the above embodiments, it is envisioned that other form-fitting means may be used to transmit power, including but not limited to keys, slots, etc.

With reference to fig. 1-2, the delivery member 3 comprises an end portion 31 adapted to the fixing means 6, and a conduit portion 32 connected to the pumping means; wherein one end of the end part 31 has a delivery part 33 which cooperates with the chamfered part 67 of the fixing device 6, the adhesive is delivered to the fixing device 6 by means of the delivery part 33, and the other end of the end part 31 cooperates with a boss 21 provided on the housing 2, so that the delivery part 3 can be supported by the housing 2 and provides a certain stability to the delivery part 3 during operation. In this embodiment, the surface of the end portion 31 that engages with the boss 21 is substantially planar, but is not limited to the above arrangement, and for example, the upper surface of the end portion 31 may be configured as a concave structure that engages with the boss, so as to support the conveying member 3 more stably.

Fig. 6 to 7 show a specific structure of the fixture 6 used for the extraction of teeth. As shown in the drawings, the fixing device 6 includes an operating portion 61, a threaded portion 63, and a straight shank portion 64, wherein the diameter of the operating portion 61 is larger than that of the threaded portion 63, and the diameter of the threaded portion 63 is larger than that of the straight shank portion 64. The fixing device 6 further includes a connecting portion 62, and the diameter of the connecting portion 62 is smaller than the diameters of the screw portion 63 and the operating portion 61. The diameter of the operation part is set to be the largest, so that the operation of an operator can be facilitated, and meanwhile, the larger operation part can provide larger torque for the operation device, so that the fixing device 6 can be conveniently fixed in teeth by a hand tool. Further, the connecting portion 62 provided between the screw portion 63 and the operating portion 61 reserves a part of an operating space, so that it is possible to facilitate the operation by the hand tool. In addition, as shown in fig. 6 to 7, a recessed portion 68 that is form-fitted to the aforementioned projecting portion 54 is also provided on the operating portion 61. Here, the recess 68 is configured as an arc-shaped recess. However, without being limited to the above embodiments, it is envisioned that other form-fitting means may be used to transmit power, including but not limited to keys, slots, etc.

As shown in fig. 6-7, an axial channel 65 is formed along the axial direction of the fixing device 6; optionally, a radial channel 66 is further opened along the radial direction of the straight shank portion 64, and in the present embodiment, the diameter of the axial channel 65 is larger than that of the radial channel 66, but the present invention is not limited thereto, and for example, the diameter of the axial channel 65 may also be equal to that of the radial channel 66. In addition, in the present embodiment, three radial channels are uniformly formed in the straight shank portion 64 along the axial direction, but the present invention is not limited to the above embodiment, and the number of channels formed in the straight shank portion 64 may be selected as needed, as long as the number of channels is greater than or equal to one, and the number of channels may achieve rapid injection of the adhesive, thereby saving time and improving uniformity of injection of the adhesive, and therefore, three channels are preferably provided; meanwhile, the radial channels can also be arranged in a non-uniform mode along the axial direction of the straight shank. In addition, in the embodiment, the plurality of channels are arranged along the radial direction perpendicular to the axial direction of the fixing device 6, so that the structure is relatively simple and the manufacturing is convenient, however, the arrangement is not limited to the above arrangement mode, the radial channels can also be arranged at an acute angle relative to the axial direction of the fixing device 6, and the arrangement can adjust the direction of injecting the adhesive, and is beneficial to the flowability of the adhesive and the like. Further, yet another preferred embodiment of the fixing device according to the present invention is shown in fig. 8. As shown in fig. 8, wherein a straight shank portion 64 is provided between the operating portion 61 and the threaded portion 63, i.e., the threaded portion 63 is provided at a lower portion of the fixing device 6. Since a screw surface is also formed on the upper hole surface of the tooth during the process of screwing the fixture 6 into the tooth. Therefore, when the adhesive is injected, the adhesive is coupled with the thread surface of the upper part, so that compared with the mode that the thread part is arranged on the upper part, the stress of the tooth can be optimized, and the tooth can be conveniently pulled out by a manual tool. Meanwhile, in the present embodiment, the diameter of the connecting portion 62 is the same as that of the straight shank portion 64, which makes the structure relatively simple. However, the diameter of the stem 64 is not limited to the above arrangement, and may be larger than the diameter of the connecting portion 62, and preferably, the diameters of the two are the same.

In addition, referring to Figs. 9-11, the present invention also contemplates a method of operation using the fixture for tooth extraction and in this embodiment the preferred fixture as described above, and it is contemplated that the fixtures of the other embodiments described above may also be used.

The operation method mainly comprises the following steps: step one, as shown in fig. 9, a hole is drilled in the tooth 8 to be extracted from the patient, where a conventional drilling tool may be used. It should be noted that the diameter of the bore hole should be adapted to the diameter of the threaded portion 63 of the fixture 6.

Step two, as shown in fig. 10, the fixture 6 is first installed into the hand tool 1. Specifically, since the same arcuate configuration is adopted by aligning the recess 68 on the operating portion of the fixing device 6 with the projection 54 on the transmission member 5 in the hand tool 1, the fixing device 6 can be smoothly inserted into the transmission member 5, and the driving force is transmitted by this form fit. Next, the fixing device 6 is placed in the hole formed in the tooth 8, and the operator operates the power device at the operation end of the hand tool 1, for example, turns on a start switch of the power device, thereby driving the transmission part 4 to rotate, and further driving the transmission part 5 and the fixing device 6 to rotate, so as to fix the fixing device 6 in the hole of the tooth 8, and the final operation state is as shown in fig. 11.

Step three, as shown in fig. 11, when the fixing device 6 has been screwed in place, at which time the operator operates the pumping device at the operating end of the hand tool 1, e.g. opens the activation switch of the pumping device, whereby adhesive is injected into the axial and radial channels of the fixing device 6 through the conveying means 3 and, as shown in fig. 11, is also conveyed between the fixing device 6 and the gap between the hole. As described above, when the screw part 63 is provided at the lower part of the fixture 6, since the screw surface is already formed at the upper part of the hole, the adhesive is in contact with the groove of the screw surface when the adhesive is injected, and thus it is possible to optimize the force applied to the teeth, so that the fastening force between the fixture and the teeth is stronger. Also, the adhesive can enter the lower space of the hole, also increasing the fastening force between the fixture 6 and the teeth. Any adhesive that is available can be used here as the above adhesive, and when the adhesive is cured, the teeth and the fixture 6 are integrated, and for the limitation of the treatment time, a UV resin is preferably used here. At this time, the UV resin is irradiated with ultraviolet rays to cure the UV resin, thereby integrating the teeth and the fixture 6.

Step four, as shown in fig. 11, the teeth and the fixture 6 are integrated after the adhesive is cured. At this time, the tooth is extracted by the hand tool 1. As described above, since the plurality of projections 22 are further provided toward the center in the opening 24 on the lower side of the housing 2, and the projections 22 have the same arc-like configuration as the recesses 68 and the projections 54, the fixing device 6 is first inserted into the transmission member 5, and the projections 22 do not have a function of preventing the fixing device 6. After the fixing device 6 is inserted into the position, the fixing device 6 can be rotated, and in this case, the fixing device 6 can be manually operated or driven to rotate by a power device. This causes the projections 22 to be displaced from the recesses 68 on the fixture 6 and the projections 22 to engage the underside of the operating portion 61 of the fixture 6, thereby allowing the teeth to be extracted with the hand tool. As shown in fig. 3, four protrusions 22 are provided toward the center at the opening 24 on the lower side of the housing, but the arrangement is not limited to the above, and for example, the number of the protrusions may be increased to improve the force applied to the hand tool. As mentioned above, the use of the above-mentioned projections enables the extraction of the tooth with the hand tool. However, the arrangement is not limited to the above arrangement, and for example, the projections may not be provided, and in this case, the hand tool merely fastens the fixture and injects the adhesive until the adhesive is cured to integrate the teeth and the fixture, and then the teeth are extracted by using another hand tool. Thereby realizing convenient tooth extraction while not damaging patients as much as possible.

The above embodiments are only used for illustrating the invention and not for limiting the technical solutions described in the invention, and although the present invention has been described in detail in the present specification with reference to the above embodiments, the present invention is not limited to the above embodiments, and therefore, any modification or equivalent replacement of the present invention is made; all such modifications and variations are intended to be included herein within the scope of this disclosure and the appended claims.

Claims

1. A fixture for tooth extraction, characterized by: comprises an operating part, a thread part and a straight shank part; fixing the fixture to the tooth and/or extracting the tooth together with the fixture using a hand tool; the fixing device is provided with an axial channel along the axial direction; a radial channel is further formed in the radial direction of the straight handle part, and the diameter of the axial channel is larger than or equal to that of the radial channel; the number of the radial channels is more than or equal to two; the radial channels are arranged in a uniform or non-uniform manner along the axial direction of the straight shank part; and a chamfer part matched with the manual tool is also arranged at the opening of the axial channel on the operating part.

2. The fixture for extraction of teeth as set forth in claim 1, wherein: the diameter of the operating part is larger than that of the threaded part, the diameter of the threaded part is larger than that of the straight shank part, and a concave part matched with the hand tool for use is further arranged on the operating part.

3. The fixture for extraction of teeth as set forth in claim 2, wherein: the fixing device further comprises a connecting part, and the diameter of the connecting part is smaller than the diameters of the threaded part and the operating part.

4. A fixture for tooth extraction as claimed in claim 3, wherein: the threaded portion is located between the operating portion and the straight shank portion.

5. A fixture for tooth extraction as claimed in claim 3, wherein: the straight shank portion is located between the operating portion and the threaded portion.