Expansion type implant

Abstract

The utility model provides an expansion type implant which comprises an implant and an expansion column clamped in the implant, the expansion column is positioned in an expansion part of the implant, a balance sleeve and an ejector rod are sequentially mounted above the implant, a torque wrench is mounted outside the ejector rod, a screw rod of the ejector rod penetrates through the balance sleeve and then is in contact with the expansion column, and the expansion column is in contact with the expansion column. The torque wrench is used for driving the expansion column to move towards the lower part of the implant through the screw until the limiting surface of the ejector rod is attached to the upper part of the balance sleeve, and the expansion part of the implant is bent outwards. According to the expansion type implant disclosed by the utility model, the surgical operation is simpler and more convenient, the initial stability can be improved by the unique structural design, the occlusion stress is dispersed after the middle stage, the synostosis recovery of a patient is accelerated, and the repair requirements of most patients are met.

Description

TECHNICAL FIELD

[0001] The utility model belongs to oral cavity machinery field, especially a kind of expansion implant. BACKGROUND

[0002] Oral implant has been mature in clinical application, its appearance structure is diversified, from appearance thread structure to columnar, conical, from thread edge structure to spiral edge, straight edge, from function, it is similar, there is no special clinical application function, all belong to conventional application implant, existing implant is mostly conical or cylindrical, implant conical has better stability in initial implantation, when long-term load, stress is too large, implant cylindrical has poor stability in initial period, cause patient recovery is relatively slow, therefore, there is an urgent need for a new implant to solve the above problems. SUMMARY

[0003] Therefore, the utility model aims at providing an expansion implant to solve the problems of poor stability of implant or large long-term load stress, slow patient recovery.

[0004] To achieve the above object, the technical scheme of the utility model is as follows:

[0005] An expansion implant includes an implant and an expansion column connected inside the implant, the expansion column is located in the expansion site of the implant, a balance sleeve and an ejection rod are sequentially installed above the implant, a torque wrench is installed outside the ejection rod, the screw rod of the ejection rod contacts the expansion column after passing through the balance sleeve, the torque wrench is used to drive the expansion column to move to the lower part of the implant through the screw rod until the limiting surface of the ejection rod is attached to the upper part of the balance sleeve, and the expansion site of the implant is bent outward.

[0006] Further, the implant is provided with a balance sleeve connecting portion, a screw hole and an expansion column placement portion sequentially communicated from top to bottom inside the implant, the screw hole and the expansion column placement portion are both used to install the expansion column, the balance sleeve connecting portion is used to connect the balance sleeve, the expansion column placement portion forms an expansion site outside, and the interface between the expansion site and the expansion column placement portion is a bevel and forms an inverted conical structure.

[0007] Further, the shape of the outer surface of the implant matches the shape of the alveolus.

[0008] Further, the cross section of the expansion column is T-shaped structure, including upper end and lower end of integral structure, the upper end is connected with the screw hole of the implant, and the lower end is located in the expansion column placement portion.

[0009] Further, the lower end is cross-shaped.

[0010] Furthermore, the balancing sleeve includes an integral upper, middle and lower part, the lower part and the balancing sleeve connecting part are both regular hexagons and the two are mutually limiting and matched, and the outer part of the middle part is a connecting body of a cylinder and a frustum.

[0011] Furthermore, the outer surface of the upper part is provided with a wavy pattern.

[0012] Furthermore, the ejector rod is an integral structure with a screw at the front end that contacts the upper end of the expansion column, a limiting surface in the middle for limiting the position, and an ejector rod connecting part at the rear for connecting a torque wrench.

[0013] Compared with existing technologies, the expandable implant described in this utility model has the following advantages:

[0014] (1) The expandable implant described in this utility model makes the surgical operation simpler. Its unique structural design can improve the stability in the early stage, disperse the occlusal force in the middle stage, accelerate the recovery of bone integration, and meet the repair needs of most patients.

[0015] (2) The expandable implant described in this utility model expands to resemble an inverted cone at the bottom, providing a more stable structure for the implant and effectively dispersing the force on the alveolar bone; by expanding the lower part of the implant, the contact area with the alveolar bone is increased, further increasing bone compression and providing conditions for later osseointegration. Attached Figure Description

[0016] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0017] Figure 1 This is an exploded view of the expandable implant described in an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the expansion column described in an embodiment of the present utility model;

[0019] Figure 3 This is a schematic diagram of the balancing sleeve described in an embodiment of the present utility model;

[0020] Figure 4 This is a schematic diagram of the ejector rod described in an embodiment of the present utility model;

[0021] Figure 5 This is a schematic diagram illustrating the state of the implant and expansion column as described in this embodiment of the utility model. Figure 1 ;

[0022] Figure 6 This is a schematic diagram illustrating the state of the implant and expansion column as described in this embodiment of the utility model. Figure 2 .

[0023] BRIEF DESCRIPTION OF DRAWINGS

[0024] 1-implant; 11-screw hole; 12-expansion site; 13-outer portion; 14-bevel; 15-balancing sleeve connecting portion; 2-expansion column; 21-upper end; 22-lower end; 3-balancing sleeve; 31-upper portion; 32-middle portion; 33-lower portion; 4-ejector rod; 41-screw rod; 42-ejector rod connecting portion; 43-limit surface. DETAILED DESCRIPTION

[0025] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0026] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", etc. are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0027] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0029] An expansion type implant, such as Figures 1 to 6As shown, the implant 1, the expansion column 2, the balance sleeve 3, the ejection rod 4, the implant 1 middle joint expansion column 2, the expansion column 2 is located in the expansion site 12 of the implant 1, the implant 1 above is installed in turn balance sleeve 3 and ejection rod 4, the outside of the ejection rod 4 is installed torque wrench, the screw rod 41 of the ejection rod 4 contacts the expansion column 2 after passing through the balance sleeve 3, the torque wrench is used to drive the expansion column 2 to move to the lower part of the implant 1 through the screw rod 41, until the limiting surface 43 of the ejection rod 4 is attached to the upper part 31 of the balance sleeve 3, at this time the expansion site 12 of the implant 1 is bent outward. Forming bone extrusion effect, at the same time the inverted cone structure makes the implant more stable in the alveolar bone, can effectively disperse the stress of the alveolar bone, is conducive to bone combination, reduces the risk of implant shedding. The expansion type implant similar to the cylindrical implant is extruded outside through the implant lower part in addition to the threaded extrusion of the implant, increases the contact area with the alveolar bone, further increases the bone extrusion, provides conditions for the later bone combination, in addition, the bottom is expanded similar to the inverted cone, provides a more stable structure of the implant, can effectively disperse the stress of the alveolar bone.

[0030] The implant 1 includes an internal thread 11, an expansion site 12, an inclined surface 14, a balance sleeve connecting part 15 and an expansion column placing part 13, the inside of the implant 1 is provided with the balance sleeve connecting part 15, the screw hole 11 and the expansion column placing part 13 which are communicated in sequence from top to bottom, the screw hole 11 and the expansion column placing part 13 are both used for installing the expansion column 2, and the balance sleeve connecting part 15 is used for connecting the balance sleeve 3. The outside of the expansion column placing part 13 forms the expansion site 12, and the junction surface of the expansion site 12 and the expansion column placing part 13 is the inclined surface 14 forming an inverted cone structure.

[0031] In one or more embodiments, the shape of the outer surface of the implant 1 is matched with the shape of the alveolar.

[0032] The expansion column 2 has a T-shaped structure in cross section, including an integral structure of an upper end 21 and a lower end 22, the upper end is jointed with the screw hole 11 of the implant 1, and the lower end 22 is located in the expansion column placing part 13. Preferably, the lower end 22 is cross-shaped.

[0033] The balance sleeve 3 includes an integral structure of an upper part 31, a middle part 32 and a lower part 33, the lower part 33 and the balance sleeve connecting part 15 are both regular hexagons, the two are limitingly matched, used for limitingly fixing the balance sleeve 3 and the implant 1; the upper part 31 is used for limiting the ejection rod 4, and the outside is provided with a wave pattern, facilitating to increase the friction; the outside of the middle part 32 is a connecting body of a cylinder and a circular truncated cone.

[0034] The ejection rod 4 is an integral structure, the front end is provided with a screw rod 41 in contact with the upper end 21 of the expansion column, the middle part is provided with a limiting surface 43 used for limiting, and the rear is provided with an ejection rod connecting part 42 used for connecting the torque wrench.

[0035] The working principle of the expansion type implant is that:

[0036] As Figure 5 and Figure 6 shown, when the implant 1 is implanted into the oral cavity, the balancing sleeve 3 is installed on the implant 1, at this time, the lower part 33 of the balancing sleeve 3 is matched with the balancing sleeve connecting part 15 of the implant 1, and the taper surface of the balancing sleeve connecting part 15 is matched with the outer surface of the circular cone of the middle part 32. The ejection rod 4 is inserted into the balancing sleeve 3, the ejection rod 4 is manually rotated, the screw rod 41 is screwed into the screw hole 11 of the implant, when the screw rod 41 contacts the upper end 21 of the expansion column, the torque wrench is installed on the ejection rod connecting part 42, the force is uniformly rotated, the expansion column 2 is moved by the rotation of the screw rod 41, the lower end 22 of the expansion column extrudes the inclined surface 14 of the expansion body placing part 13, the expansion part 12 is bent outward, and when the limiting surface 43 of the ejection rod plane is matched with the upper part 31 of the balancing sleeve 3, the rotation is stopped, that is, the diameter of the implant is expanded from 4.1mm to 4.7mm, the implant is bent and extruded to the alveolar bone, the bone extrusion effect is generated, the bone combination is promoted, the implant is stabilized, and the stress of the alveolar bone can be effectively dispersed.

[0037] The above only describes the preferred embodiments of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. An expandable implant, characterized by: The application relates to a kind of implant and its inside expansion column, expansion column is located in the expansion site of implant, balance sleeve and ejector rod are installed in sequence above implant, torque wrench is installed outside ejector rod, screw rod of ejector rod contacts expansion column after passing through balance sleeve, torque wrench is used to drive expansion column to move to the lower part of implant by screw rod until the limiting surface of ejector rod is attached to the upper part of balance sleeve, the expansion site of implant is curved outward.

2. An expandable implant according to claim 1, characterized in that: The implant is internally provided with balance sleeve connecting portion, screw hole and expansion column placing portion in sequence from top to bottom, the screw hole and the expansion column placing portion are used for installing the expansion column, the balance sleeve connecting portion is used for connecting the balance sleeve, the expansion column placing portion is externally formed with expansion site, and the interface between the expansion site and the expansion column placing portion is inclined and forms inverted cone structure.

3. An expandable implant according to claim 1, characterized in that: The shape of the outer surface of the implant matches the shape of the alveolus.

4. An expandable implant according to claim 2, characterized in that: The cross section of the expansion column is T-shaped structure, including upper end and lower end of integral structure, the upper end is connected with the screw hole of the implant, and the lower end is located in the expansion column placing portion.

5. An expandable implant according to claim 4, characterized in that: The lower end is cross-shaped.

6. An expandable implant according to claim 2, characterized in that: The balance sleeve includes upper part, middle part and lower part of integral structure, the lower part and the balance sleeve connecting portion are regular hexagons and are limitedly matched, and the outer part of the middle part is the connecting body of cylinder and circular table.

7. An expandable implant according to claim 6, characterized in that: The outer surface of the upper part is provided with wave pattern.

8. The expandable implant according to claim 1, wherein: The ejector rod is of integral structure, the front end is provided with screw rod for contacting the upper end of the expansion column, the middle part is provided with limiting surface for limiting, and the rear end is provided with ejector rod connecting portion for connecting torque wrench.

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