CN206491875U - A kind of minimally invasive turnkey - Google Patents

Abstract

The utility model discloses a minimally invasive tooth extraction device, which comprises a support frame and a minimally invasive tooth extraction device arranged on the support frame; the support frame includes an annular sleeve and support feet arranged on opposite sides of the bottom of the annular sleeve, The inner wall of the annular sleeve has an annular groove, the square tube body of the minimally invasive tooth extraction device is passed through the annular sleeve, and the middle part of the square tube body extends outward along its outer circumference with a convex ring, the convex ring The outer edge of the ring is snapped into the annular groove, so that the square pipe body and the ring sleeve are axially fixed, and the square pipe body is driven by the protruding ring to rotate around the axis of the annular groove. In the utility model, since the square pipe body can be axially rotatably installed on the support frame, the handle on the square pipe body can rotate around the ring sleeve of the support frame, so as to adapt to the extraction of roots at different positions.

Description

A minimally invasive tooth extractor

technical field

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

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 extractor.

In order to achieve the above object, the minimally invasive tooth extraction device proposed by the utility model includes a support frame and a minimally invasive tooth extraction device arranged on the support frame;

The minimally invasive tooth extraction device comprises a square tube body, a pullout rod arranged in the square tube body, and root canal nails detachably connected to the pullout rod. A bottom plate is installed on the bottom of the square tube body, and the The center is provided with a first installation hole that penetrates up and down. The first bevel gear is rotatably installed in the first installation hole. The first bevel gear is provided with a threaded hole that penetrates up and down along the central axis. 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 a second mounting hole is rotatably installed in the second mounting hole. bevel gear, and the second bevel gear meshes with the first bevel gear; a handle coaxial with the second mounting hole is also installed on the side wall, and a handle is arranged in the handle to rotate A connecting rod, 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;

The support frame includes an annular sleeve and support feet arranged on opposite sides of the bottom of the annular sleeve, the inner wall of the annular sleeve has an annular groove, the square pipe body is passed through the annular sleeve, and the square The middle part of the pipe body extends outward along its outer circumference with a protruding ring, and the outer edge of the protruding ring snaps into the annular groove, so that the square pipe body and the annular sleeve are axially fixed, and the square pipe body passes through the protruding ring. The ring is driven to rotate around the axis of the annular groove.

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, a card slot is provided at the bottom of the supporting foot.

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. Since the square tube body can be axially rotatably installed on the support frame, the handle on the square tube body can rotate around the annular sleeve of the support frame to adapt to the extraction of roots at different positions.

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 three-dimensional schematic diagram of minimally invasive tooth extraction device of the present invention;

Fig. 2 is the sectional structure schematic diagram of minimally invasive tooth extraction device of the present invention;

Fig. 3 is a schematic diagram of the explosion structure of Fig. 1;

Fig. 4 is the structural representation of root canal screw of the present utility model;

Fig. 5 is a schematic diagram of the connection structure between the drag hook and the pulling rod of the utility model.

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 of the utility model embodiment is described in detail below with reference to accompanying drawing.

As shown in Figures 1 to 3, the minimally invasive tooth extraction device according to the embodiment of the present invention includes a support frame 100 and a minimally invasive tooth extraction device arranged on the support frame 100;

The minimally invasive tooth extraction device includes a square tube body 10, a pull-out rod 20 arranged in the square tube body 10, a root canal screw 30 detachably connected to the lower end of the pull-out rod 20, and a drive pull-out rod 20 spirally upward or toward The lower part of the movement, wherein, the lower end of the pulling rod is provided with a pull hook 21, and the upper end of the root canal nail 30 is provided with a through hole 31, and the pulling rod 20 can cooperate with the root canal through the cooperation of the pulling hook 21 and the through hole 31. Nails 30 are connected axially.

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. 4 and FIG. 5 , the lower end of the pulling rod 20 is provided with an annular groove 22 , and the upper end of the pull hook 21 is provided with a collar set in the annular groove 22 211 , the drag hook 21 is axially connected with the pulling rod 20 through the collar 211 , and can rotate around the axis of the pulling rod 20 .

The support frame 100 includes an annular sleeve 101 and support feet 102 arranged on opposite sides of the bottom of the annular sleeve 101. The bottom of the support foot 102 is provided with a slot 1021, and the inner wall of the annular sleeve 101 has an annular recess. Groove 103, the square pipe body 10 is set in the annular sleeve 101, and the middle part of the square pipe body 10 extends outward along its outer circumference with a protruding ring 16, and the outer edge of the protruding ring 16 snaps into the ring In the groove 103 , the square pipe body 10 and the ring sleeve 101 are axially fixed, and the square pipe body 10 is driven by the protruding ring 16 to rotate around the axis of the ring groove 103 . In this way, when the square tube body 10 rotates relative to the support frame, it can drive the handle installed on the square tube body 10 to rotate accordingly, which can facilitate the operation of the medical staff, so that the medical staff can adjust the rotation angle of the handle according to the position of the tooth root to be extracted. , when the tooth roots on the left and right sides of the patient are extracted, the situation that the handle is against the corner of the patient's mouth is avoided, and the pain of the patient's tooth extraction is alleviated.

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 tooth root, and then the two support legs 102 of the support frame are fixed on the two sides of the tooth root to be extracted. On the side teeth, the square tube body 10 is supported, and the hook 21 of the pulling rod 20 is hung in the through hole 31 of the root canal nail 30 to realize the axial connection between the pulling rod 20 and the root canal nail 30. At this time, turn the knob 62, drive the second bevel gear 50 to rotate through the connecting rod 61, and drive the first bevel gear 40 to rotate, and the first bevel gear 40 drives the pull rod through the threaded connection between its threaded hole and the pull rod 20 when rotating 20 moves upward in a spiral along the threaded hole, and the root canal screw 30 is pulled by the spiral upward pulling force of the extraction rod 20, thereby driving the extraction of the entire residual root of the tooth. The structure is simple, the operation is convenient, the extraction speed is fast, and the damage to the patient is small during extraction. , to speed up the recovery speed of patients after tooth extraction.

Specifically, as shown in Fig. 2 and Fig. 3, the annular sleeve 101 is composed of an upper cover 1011 and a lower cover 1012, the annular slot 103 is formed between the upper cover 1011 and the lower cover 1012, and the upper cover 1011 and the lower cover 1012 are respectively placed on the convex ring 16 from the up and down direction of the square tube body 10, and the upper cover 1011 and the lower cover 1012 are fixed by screws, so that the convex ring 16 is stuck between the upper cover 1011 and the lower cover 1012 In the annular groove 103 formed between them.

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.

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, comprises a support frame and a minimally invasive tooth extraction device arranged on the support frame; The minimally invasive tooth extraction device comprises a square tube body, a pullout rod arranged in the square tube body, and root canal nails detachably connected to the pullout rod. A bottom plate is installed on the bottom of the square tube body, and the The center is provided with a first installation hole that penetrates up and down. The first bevel gear is rotatably installed in the first installation hole. The first bevel gear is provided with a threaded hole that penetrates up and down along the central axis. 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 a second mounting hole is rotatably installed in the second mounting hole. bevel gear, and the second bevel gear meshes with the first bevel gear; a handle coaxial with the second mounting hole is also installed on the side wall, and a handle is arranged in the handle to rotate A connecting rod, 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; The support frame includes an annular sleeve and support feet arranged on opposite sides of the bottom of the annular sleeve, the inner wall of the annular sleeve has an annular groove, the square pipe body is passed through the annular sleeve, and the square The middle part of the pipe body extends outward along its outer circumference with a protruding ring, and the outer edge of the protruding ring snaps into the annular groove, so that the square pipe body and the annular sleeve are axially fixed, and the square pipe body passes through the protruding ring. The ring is driven to rotate around the axis of the annular groove. 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 in the center of the guide plate, and the screw 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, the upper end of the square tube body is further provided with a cover plate. 4. The minimally invasive tooth extraction device according to claim 1, wherein the first bevel gear includes 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 pipe body protrudes outward along the peripheral edge 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 the bottom of the support leg is provided with a card slot.