CN206491876U - A kind of minimally invasive dental device - Google Patents

Abstract

The utility model discloses a minimally invasive tooth extraction device, which comprises a square tube body, a pullout rod arranged in the square tube body, and root canal nails detachably connected with the pullout rod. A bottom plate is installed on the bottom of the square tube body. The center of the center is rotatably equipped with a first bevel gear, and the first bevel gear is threaded outside the pull rod; one of the side walls of the square pipe body is rotatably equipped with a second bevel gear near the bottom, and The second bevel gear meshes with the first bevel gear; a handle is also installed on the side wall, and the handle is rotated inside with one end fixedly connected to the second bevel gear, and the other end passing through the end of the handle and connected to the knob. Connecting rod. The utility model changes the transmission direction of the shaft by adopting the action of two bevel gears, and rotating the knob can make the pulling rod move upwards in a spiral manner, and pull the root canal screw to drive the tooth root to be pulled out without causing the periodontal tissue around the tooth root to be damaged. The damage to the gums saves time and effort when pulling out the roots, and reduces the pain of the patient.

Description

A minimally invasive tooth extraction device

technical field

The utility model relates to the technical field of medical instruments used in stomatology, in particular to a minimally invasive tooth extraction device.

Background technique

At present, when extracting teeth in oral clinical surgery, the principle of lever mechanics is applied, and the instruments used usually include tooth lifters, chisels, hammers, and tooth extraction forceps. The method is to place the tooth lifter and chisel at the interdental space and the corresponding alveolar ridge, forcefully pry or chisel the tooth loose, and then hold the pliers, or shake or twist to pull the affected tooth out. There are many problems in using the above instruments to extract teeth. First, the extraction operation mainly depends on the dentist’s experience and technology. It needs a long clinical training to master it proficiently. It is difficult for young doctors to master it. Second, if you encounter a broken tooth root, Above-mentioned instrument can't locate on the residual root, often very troublesome, needs to cut gingiva sometimes, brings a lot of misery to patient; The 3rd, no matter adopt tooth lifter, chisel, hammer or tooth extraction forceps etc. all can cause wound when extracting the residual root of anterior tooth The area is relatively large, which brings unnecessary pain to the patient.

Utility model content

The purpose of the utility model is to overcome the deficiencies in the prior art and provide a minimally invasive tooth extraction device.

In order to achieve the above-mentioned purpose, the minimally invasive tooth extraction device proposed by the utility model includes a square tube body, a pull-out rod arranged in the square tube body, and a root canal nail detachably connected with the pull-out rod. A base plate is installed at the bottom, and the center of the base plate is provided with a first installation hole that penetrates up and down, and a first bevel gear is rotatably installed in the first installation hole, and the first bevel gear is arranged along the central axis There is a threaded hole penetrating up and down, and the pulling rod is a screw rod and is threadedly connected with the threaded hole; one of the side walls of the square pipe body is provided with a horizontal second mounting hole near the bottom, and the second mounting hole A second bevel gear is rotatably installed in the hole, and the second bevel gear meshes with the first bevel gear; A handle, a connecting rod is provided for rotation inside the handle, one end of the connecting rod is fixedly connected to the second bevel gear, and the other end passes through the end of the handle and is connected with a knob.

Preferably, a guide plate is provided in the middle of the square pipe body, and a threaded guide hole is provided in the center of the guide plate, and the thread of the pulling rod is threaded in the threaded guide hole.

Preferably, the upper end of the square tube body is further provided with a cover plate.

Preferably, the first bevel gear includes a first bevel gear and a first rotating shaft vertically extending along the positioning end surface of the first bevel gear, and the first rotating shaft is installed on the first installation of the bottom plate In the hole, the positioning end surface of the first bevel gear abuts against the upper surface of the bottom plate, and the threaded hole is provided through the center of the first bevel gear and the first rotating shaft.

Preferably, the second bevel gear includes a second bevel gear and a second rotating shaft vertically extending along the positioning end face of the second bevel gear, and the second rotating shaft is arranged on the side wall of the square tube In the second installation hole on the top, the positioning end surface of the second bevel gear abuts against the inner wall surface of the side wall, the outer end surface of the second rotating shaft is provided with a special-shaped keyway in the axial direction, and the connecting rod is provided with A connecting end matched with the special-shaped keyway.

Preferably, the square pipe body protrudes outward along the periphery of the second installation hole with a ring-shaped installation part, the outer peripheral surface of the ring-shaped installation part is provided with external threads, and one end of the handle is provided with the The external thread is matched with the internal thread, and the handle is connected to the ring-shaped installation part through threads.

Preferably, the bottom surface of the bottom plate is provided with a fixed strut, and the bottom of the fixed strut is provided with a card slot.

The technical scheme of the utility model changes the transmission direction of the shaft through the action of two bevel gears, and uses the knob at the outer end of the handle to drive the connecting rod inside to drive the second bevel gear to rotate, and then drives the first bevel gear to rotate, so that The pulling rod moves upward in a spiral in the square tube body, and the pulling rod pulls up the root canal nail driven into the residual root of the tooth to drive the root out, without causing damage to the periodontal tissue and gingiva around the root, so that when the root is pulled out It saves time and effort, and reduces the suffering of patients.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the present utility model, and those skilled in the art can also obtain other drawings according to the structures shown in these drawings without creative work.

Fig. 1 is the structural representation of minimally invasive tooth extraction device of the present invention;

Fig. 2 is the three-dimensional schematic diagram of the minimally invasive tooth extraction device of the present invention;

Fig. 3 is a structural schematic diagram of the root canal nail of the present invention;

Fig. 4 is a schematic diagram of the connection structure between the drag hook and the pulling rod of the present invention;

The realization of the purpose of the utility model, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

detailed description

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary, intended to explain the utility model, but can not be construed as a limitation of the utility model, based on the embodiments of the utility model, those of ordinary skill in the art do not make All other embodiments obtained under the premise of creative labor belong to the scope of protection of the utility model.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship indicated by "circumferential", "radial" and so on is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying the referred device or positional relationship. Elements must have certain orientations, be constructed and operate in certain orientations, and thus should not be construed as limitations on the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present utility model, "plurality" means two or more, unless otherwise specifically defined.

In this utility model, unless otherwise specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

In the present invention, unless otherwise clearly specified and limited, a first feature being "on" or "below" a second feature may include direct contact between the first and second features, and may also include the first and second features being in direct contact with each other. The features are not in direct contact but through another feature between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "under" the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

The minimally invasive tooth extraction device according to the embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in Fig. 1 and Fig. 2, the minimally invasive tooth extraction device according to the embodiment of the utility model includes a square tube body 10, a pullout rod 20 arranged in the square tube body 10, and is detachably connected with the lower end of the pullout rod 20 The root canal nail 30 and the parts that drive the pulling rod 20 to move upwards or downwards in a spiral, wherein the lower end of the pulling rod is provided with a pull hook 21, the upper end of the root canal nail 30 is provided with a through hole 31, and the pulling rod 20 The axial connection with the endodontic nail 30 can be realized through the cooperation of the draw hook 21 and the through hole 31 .

Specifically, a bottom plate 11 is installed on the bottom of the square pipe body 10, and the center of the bottom plate 11 is provided with a first mounting hole 111 penetrating up and down, and a first cone is rotatably installed in the first mounting hole 111. bevel gear 40, the first bevel gear 40 is provided with a threaded hole penetrating up and down along the central axis, and the pulling rod 20 is a screw rod and is threadedly connected with the threaded hole; one side of the square pipe body 10 A second horizontal mounting hole 12 is provided at the position of the wall near the bottom, and a second bevel gear 50 is rotatably installed in the second mounting hole 12, and the second bevel gear 50 is connected to the first bevel gear. Shaped gear 40 meshing; The handle 60 that is coaxial with the second mounting hole 12 is also installed on the side wall, and a connecting rod 61 is installed in the handle 60, and one end of the connecting rod 61 is connected to the The second bevel gear 50 is fixedly connected, and the other end passes through the end of the handle 60 and is connected with a knob 62 .

In this embodiment, as shown in FIG. 3 and FIG. 4 , the lower end of the pulling rod is provided with an annular groove 22 , and the upper end of the pull hook 21 is provided with a collar 211 sleeved in the annular groove 22 , the drag hook is axially connected to the pulling rod 20 through the collar 211 , and can rotate around the axis of the pulling rod 20 .

According to the minimally invasive tooth extraction device of this embodiment, during the minimally invasive tooth extraction process, the root canal nail 30 is first driven into the root canal of the residual root of the tooth, and then the pull hook 21 of the pulling rod 20 is hung on the through hole of the root canal nail 30. In the hole 31, the axial connection between the pulling rod 20 and the root canal screw 30 is realized, and then the lower end of the square tube body 10 is positioned on the patient's tooth through the support, and the knob 62 is rotated to drive the second bevel gear through the connecting rod 61 50 rotation, to drive the first bevel gear 40 to rotate, the first bevel gear 40 drives the puller 20 to move upwards in a spiral through the threaded connection between its threaded hole and the puller 20 when rotating, and utilizes the spiral of the puller 20 to move upward The pulling force pulls the root canal nail 30, and then drives the extraction of the entire residual root of the tooth. The structure is simple, the operation is convenient, the extraction speed is fast, the damage to the patient is small during the extraction, and the recovery speed of the patient after the extraction is accelerated.

Preferably, a guide plate 13 is provided in the middle of the square pipe body 10, and a threaded guide hole is provided in the center of the guide plate 13, and the pull rod 20 is threaded in the threaded guide hole. In this way, the pulling rod 20 can be more vertically stable when it spirally moves up and down in the square tube body 10, the swing of the pulling rod 20 can be reduced, and the tooth root can be pulled out more labor-saving. Wherein, the upper end of described square pipe body 10 is also provided with cover plate 14, like this, has avoided the patient's saliva to flow in the square pipe body 10 in the tooth extraction process, has avoided the first bevel gear 40 and the second bevel gear The impact of saliva between 50 and 50 will lead to a reduction in lifespan, which prevents cross-contamination to a large extent.

Further, the first bevel gear 40 includes a first bevel gear 41 and a first rotating shaft 42 vertically extending along the positioning end surface of the first bevel gear 41, and the first rotating shaft 42 rotates and is arranged on the In the first installation hole 111 of the bottom plate 11, the positioning end surface of the first bevel gear 41 abuts against the upper surface of the bottom plate 11, and the threaded hole is provided through the first bevel gear 41 and the first rotating shaft 42 center of.

Furthermore, the second bevel gear 50 includes a second bevel gear 51 and a second rotating shaft 52 vertically extending along the positioning end surface of the second bevel gear 51, and the second rotating shaft 52 rotates and is arranged on In the second installation hole 12 on the side wall of the square pipe body 10, the positioning end surface of the second bevel gear 51 abuts against the inner wall surface of the side wall, and the outer end surface of the second rotating shaft 52 is axially A special-shaped keyway is provided, and the connecting rod 61 is provided with a connecting end matched with the special-shaped keyway.

According to the structural design and installation position of the first bevel gear 40 and the second bevel gear 50 in this embodiment, the utility model can be installed more quickly and conveniently during production. After the installation is completed, the first bevel gear 40 While intermeshing with the second bevel gear 50, they are mutually axially positioned without requiring other parts, and the structure design is reasonable and the cost is low.

Preferably, the square pipe body 10 protrudes outward along the periphery of the second installation hole 12 with an annular installation portion 15, the outer peripheral surface of the annular installation portion 15 is provided with external threads, and one end of the handle 60 An internal thread matching the external thread is provided, and the handle 60 is threadedly connected to the annular mounting portion 15 . It can facilitate the installation between the handle 60 and the connecting rod 61 in the handle 60, the square tube body and the second bevel gear 50, and at the same time, the transmission of the shaft is changed due to the action of the first bevel gear 40 and the second bevel gear 50 The direction makes the tooth extraction operation more convenient.

Preferably, the bottom surface of the bottom plate 11 is provided with a fixed strut 112 , and the bottom of the fixed strut 112 is provided with a slot 113 . During the tooth extraction process, the fixed support rod 112 is used to be fixed on the teeth on both sides of the root to be extracted, and supports the square tube body 10 to facilitate the tooth extraction operation, and then adjust the position of the extraction rod 20 by rotating the knob 62. The extension length is convenient for connecting the extraction rod 20 to the endodontic screw 30 driven into the root of the tooth, and finally the extraction rod 20 is moved upward by rotating the knob 62 , thereby pulling out the root through the endodontic screw 30 .

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structures, materials or features are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

The above is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. Under the utility model concept of the utility model, the equivalent structural transformation made by using the specification of the utility model and the contents of the accompanying drawings, Or directly/indirectly used in other related technical fields are all included in the patent protection scope of the present utility model.

Claims (7)

1. A minimally invasive tooth extraction device, characterized in that it comprises a square tube body, a pull-out rod located in the square tube body, a root canal nail detachably connected with the pull-out rod, and the bottom of the square tube body is installed There is a bottom plate, the center of the bottom plate is provided with a first installation hole that penetrates up and down, and a first bevel gear is rotatably installed in the first installation hole, and the first bevel gear is provided with an upper and lower shaft along the central axis. through threaded holes, the pulling rod is a screw rod and is threadedly connected with the threaded holes; one of the side walls of the square pipe body is provided with a horizontal second mounting hole near the bottom, and the second mounting hole A second bevel gear is rotatably installed, and the second bevel gear meshes with the first bevel gear; a handle coaxially arranged with the second mounting hole is also installed on the side wall, A connecting rod is provided for rotation inside the handle, one end of the connecting rod is fixedly connected with the second bevel gear, and the other end passes through the end of the handle and is connected with a knob. 2. The minimally invasive tooth extraction device according to claim 1, wherein a guide plate is provided in the middle of the square tube body, and a threaded guide hole is provided at the center of the guide plate, and the thread of the extraction rod is penetrated. in the threaded pilot hole. 3. The minimally invasive tooth extraction device according to claim 2, characterized in that, a cover plate is further provided on the upper end of the square tube body. 4. The minimally invasive tooth extraction device according to claim 1, wherein the first bevel gear comprises a first bevel gear and a first rotating shaft vertically extending along the positioning end face of the first bevel gear, so The first rotating shaft rotates and is arranged in the first installation hole of the bottom plate, the positioning end surface of the first bevel gear abuts against the upper surface of the bottom plate, and the threaded hole is set through the first bevel gear and the center of the first axis of rotation. 5. The minimally invasive tooth extraction device according to claim 1, wherein the second bevel gear comprises a second bevel gear and a second rotating shaft vertically extending along the positioning end face of the second bevel gear, so The second rotating shaft rotates in the second installation hole provided on the side wall of the square pipe body, the positioning end surface of the second bevel gear abuts against the inner wall surface of the side wall, and the outer surface of the second rotating shaft The end face is provided with a special-shaped keyway in the axial direction, and the connecting rod is provided with a connecting end matching the special-shaped keyway. 6. The minimally invasive tooth extraction device according to claim 1, characterized in that, the square tube protrudes outward along the periphery of the second mounting hole with a ring-shaped installation part, and the outer peripheral surface of the ring-shaped installation part is set There is an external thread, and one end of the handle is provided with an internal thread matching the external thread, and the handle is threadedly connected to the ring-shaped installation part. 7. The minimally invasive tooth extraction device according to claim 1, wherein a fixed strut is provided on the bottom surface of the bottom plate, and a slot is provided at the bottom of the fixed strut.