CN202843835U

CN202843835U - Expansion-type implant

Info

Publication number: CN202843835U
Application number: CN 201220547590
Authority: CN
Inventors: 时永坤; 公兵丽; 栗兴超; 胡明晓; 张鹏; 谢春波; 陈杰; 马玉
Original assignee: Shinva Medical Instrument Co Ltd
Current assignee: Shinva Medical Instrument Co Ltd
Priority date: 2012-10-24
Filing date: 2012-10-24
Publication date: 2013-04-03
Anticipated expiration: 2022-10-24

Abstract

The utility model provides an expansion-type implant, which relates to the technical field of oral medicine. A plurality of expansion petals (7) capable of expanding around are uniformly distributed around an expansion-type cavity (5), external screws are arranged outside the outer wall of the expansion petals (7), an expansion nail (8) capable of sliding downwards is plugged inside an internal screw channel (6), the expansion nail (8) is composed of an upper part and a lower part, the upper part is a columnar body inside the internal screw channel (6), and the lower part is a conical body clamped inside the expansion cavity (5) and provided with arc bulges on four ridges, the expansion-type cavity (5) is a conical channel uniformly provided with four arc grooves on the inner wall, and the arc bulges of the lower part of the expansion nail (8) are embedded into the arc grooves of the expansion-type cavity (5). The expansion-type implant effectively improves the fixation force of the implant and reduces the looseness of the implant, the application of the expansion-type implant is wide and applicable to various groups, and the implanting is firm.

Description

Expansion type implantation body

Technical field

Expansion type implantation body relates to the stomatology technology field, is specifically related to a kind of expandable implantation body.

Background technology

Since the sixties in last century, professor Branemark proposed the synosteosis theory, oral implant rehabilitation had been widely used in clinical medicine, and implantation body is the core of oral implant rehabilitation.In alveolar bone degree of depth deficiency, bone ridge short of width and osteoporosis situation, especially in the implant operation that relates to the specific positions such as maxillary sinus and nervus mandibularis pipe, common implantation body uses limited, and the then implant retention power deficiency of implementing reluctantly to perform the operation easily causes operation and repairing failure.

Summary of the invention

The technical problems to be solved in the utility model is: overcome the existing product technical deficiency, a kind of retention that improves implantation body is provided, reduce implantation body loosening, be widely used, be applicable to all kinds of crowds, plant firmly expansion type implantation body.

The technical scheme that its technical problem that solves this utility model adopts is: this expansion type implantation body, comprise implantation body's body, implantation body's body is divided into the top, cervical region and bottom, the top has interior hexagonal groove, the lower end, bottom has axial expansion die cavity, interior hexagonal groove is connected with the female thread passage of expansion die cavity by the centre, it is characterized in that: described expansion die cavity peripheral uniform a plurality of can to around the expanding petal that expands and open, the expanding petal outer wall is provided with external screw thread, but be plugged with the expandable nail of down sliding in the female thread passage, expandable nail is comprised of two parts up and down, top is divided into the cylinder in the female thread channel interior, the bottom is divided into four ribs that are stuck in intumescent intracavity section with the bullet of arc convex, the expansion die cavity is the tapered channel that inner wall even distribution has four arc grooves, and the arc convex of part embeds in the arc groove of expansion die cavity under the expandable nail.Expandable nail first by implantation body's body lower shaft to slipping into the expansion die cavity, the upper end column part enters the female thread passage, after implantation body's body is implanted alveolar bone, promote expandable nail integral body with instrument via the female thread passage and slip into the expansion die cavity, the expansion die cavity is opened and drive a plurality of expanding petals lower end to around expand.The expanding petal lower end can make screw thread internally push skeleton to expanding all around increases retention, this expansion type implantation body more is applicable to have the crowd of the symptoms such as alveolar bone degree of depth deficiency, bone ridge short of width and osteoporosis, the unique design of expanding petal outer wall is fully filled intumescent intracavity section, expandable nail is combined closely with the expansion die cavity, plays the self-locking effect.

Described intumescent cavity wall tilts from top to bottom to the inside, and forming tapering is the tapered channel of α, and the size of α is between 1 °-5 °.

Operative tip has the spill sphere on the described expandable nail, and the bottom divides outer wall to tilt laterally from top to bottom, and forming tapering is the bullet of β, and the size of β is between 3 °-8 °.

Described expanding petal upper end connects implantation body's body outer wall, and the lower end is separated with the intumescent cavity outer wall and can outwards be expanded and opens.

Described expanding petal quantity is 2-10.

Described implantation body bodies top periphery has fine thread, and bottom and expanding petal periphery have coarse-pitch thread, and the coarse-pitch thread of expanding petal outer wall can make implantation body's body easily implant alveolar bone.

Compared with prior art, the beneficial effect that has of this utility model is:

1, thereby expandable nail through extruding enter the intumescent intracavity and expansion die cavity lower end propped up become drive greatly a plurality of expanding petals to around expand and open, utilizing mechanical type to expand increases implantation body bottom and osseous tissue contact surface angulation angle and area, push simultaneously the surrounding bone tissue, Effective Raise the retention of implantation body, reduce implantation body loosening, especially for the good maintenance of the situation of maxillary sinus and nervus mandibularis pipe position alveolar bone degree of depth deficiency, avoid implant operation and plantation repairing failure, solved in the implant prostheses clinical medicine for the problem of above indication, promoted the development of tooth-planting technology and renovation technique;

2, expandable nail top is divided into cylinder, the bottom is divided into four ribs with the bullet of arc convex, the expansion die cavity is the tapered channel that inner wall even distribution has four arc grooves, the arc convex of part embeds in the arc groove of expansion die cavity under the expandable nail, this design can make intumescent intracavity section fully fill, and expandable nail is combined closely with the expansion die cavity, plays the self-locking effect, and can increase the contact area of expanding petal and alveolar bone, maintenance is more firm.

Description of drawings

Fig. 1 is this utility model structure top view.

Fig. 2 is that this utility model is planted the A-A of front Fig. 1 to cutaway view.

Fig. 3 is that this utility model is planted the A-A of rear Fig. 1 to cutaway view.

Fig. 4 is the front view of this utility model expandable nail.

Fig. 5 is the top view of this utility model expandable nail.

Wherein: 1, top 2, cervical region 3, bottom 4, interior hexagonal groove 5, expansion die cavity 6, female thread passage 7, expanding petal 8, expandable nail 9, base station 10, screw.

The specific embodiment

Fig. 1 ~ 2nd, most preferred embodiment of the present utility model is described further below in conjunction with 1 ~ 5 pair of this utility model of accompanying drawing.

Embodiment 1: with reference to accompanying drawing 1 ~ 2: this expansion type implantation body, comprise implantation body's body, and implantation body's body is divided into top 1, cervical region 2 and bottom 3.The top 1 of implantation body's body has interior

hexagonal groove

4,3 lower ends, bottom have axial expansion die cavity 5, the expanding petal 7 that can outwards expand in expansion die cavity 5 peripheral uniform a plurality of lower ends, implantation body's bodies top 1 periphery has fine thread, and bottom 3 and expanding petal 7 peripheries have coarse-pitch thread.Expanding petal 7 quantity are 4, and expanding petal 7 upper ends connect implantation body's body outer wall, and the lower end is separated with expansion die cavity 5 outer walls and can outwards be expanded and opens.Interior hexagonal groove 4 is connected with the female thread passage 6 of expansion die cavity 5 by the centre, places in axial sliding expandable nail 8 in the female thread passage 6.

With reference to accompanying drawing 3 ~ 5: expandable nail 8 is comprised of two parts up and down, top is divided into the cylinder in female thread passage 6 inside, the bottom is divided into four ribs that are stuck in expansion die cavity 5 inside with the bullet of arc convex, expansion die cavity 5 has the tapered channel of four arc grooves for inner wall even distribution, the arc convex of 8 times parts of expandable nail embeds in the arc groove of expansion die cavity 5.Expandable nail 8 first by implantation body's body lower shaft to slipping into expansion die cavity 5, the upper end column part enters female thread passage 6, after implantation body's body is implanted alveolar bone, promote expandable nails 8 integral body with instrument via female thread passage 6 and slip into expansion die cavity 5, expansion die cavity 5 is opened and drive a plurality of expanding petals 7 lower ends to around expand.Expanding petal 7 lower ends can make screw thread internally push skeleton to expanding all around increases retention, and this expansion type implantation body more is applicable to have the crowd of the symptoms such as alveolar bone degree of depth deficiency, bone ridge short of width and osteoporosis.

Expansion die cavity 5 inwalls tilt from top to bottom to the inside, and forming tapering is the tapered channel of α, and the size of α is 3 °, operative tip has the spill sphere on the expandable nail 8, the bottom divides outer wall to tilt laterally from top to bottom, and forming tapering is the bullet of β, and the size of β is 6.5 °.

Embodiment 2: expanding petal 7 quantity are 6, and all the other settings are identical with embodiment 1.

Embodiment 3: expanding petal 7 quantity are 8, and all the other settings are identical with embodiment 1.

Embodiment 4: the size of the tapering β of expandable nail 8 is 5.5 °, and all the other settings are identical with embodiment 1.

Embodiment 5: the size of the tapering β of expandable nail 8 is 7.5 °, and all the other settings are identical with embodiment 1.

Operation principle is as follows: with reference to accompanying drawing 2: at first hole at alveolar bone, carry out tapping according to sclerotin situation needs, then utilize instrument to be held in interior hexagonal groove 4, the expansion type implantation body of the expandable nail 8 of packing into is screwed in the hole, with specific purpose tool expandable nail 8 is pressed in the expansion die cavity 5, in the process that expandable nail 8 sinks, deformation occurs in expansion die cavity 5, the arc convex of 8 times parts of expandable nail embeds in the arc groove of expansion die cavity 5 fully simultaneously, expansion die cavity 5 is propped up and the lower end becomes large gradually and drive a plurality of expanding petals 7 opens to expanding all around, implantation body bottom 3 and osseous tissue contact surface angulation angle and area have been increased, compress simultaneously the surrounding bone tissue, Effective Raise the retention of implantation body.This expansion type implantation body utilizes screw 10 to be connected connection with the female thread passage after plantation healing, and base station 9 is fixed on 1 upper end, expansion implant top, and artificial tooth is installed at last.

The above, it only is preferred embodiment of the present utility model, be not to be the restriction of this utility model being made other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solutions of the utility model content that do not break away to any simple modification, equivalent variations and remodeling that above embodiment does, still belongs to the protection domain of technical solutions of the utility model according to technical spirit of the present utility model.

Claims

1. expansion type implantation body, comprise implantation body's body, implantation body's body is divided into top (1), cervical region (2) and bottom (3), top (1) has interior hexagonal groove (4), (3) lower end, bottom has axial expansion die cavity (5), interior hexagonal groove (4) is connected by middle female thread passage (6) with expansion die cavity (5), it is characterized in that: described expansion die cavity (5) peripheral uniform a plurality of can to around the expanding petal (7) that expands and open, expanding petal (7) outer wall is provided with external screw thread, female thread passage (6) but in be plugged with the expandable nail (8) of down sliding, expandable nail (8) is comprised of two parts up and down, top is divided at the inner cylinder of female thread passage (6), the bottom is divided into and is stuck in four inner ribs of expansion die cavity (5) with the bullet of arc convex, expansion die cavity (5) has the tapered channel of four arc grooves for inner wall even distribution, the arc convex of the lower part of expandable nail (8) embeds in the arc groove of expansion die cavity (5).

2. expansion type according to claim 1 implantation body, it is characterized in that: described expansion die cavity (5) inwall tilts from top to bottom to the inside, and forming tapering is the tapered channel of α, and the size of α is between 1 °-5 °.

3. expansion type according to claim 1 implantation body, it is characterized in that: the upper operative tip of described expandable nail (8) has the spill sphere, and the bottom divides outer wall to tilt laterally from top to bottom, and forming tapering is the bullet of β, and the size of β is between 3 °-8 °.

4. expansion type according to claim 1 implantation body, it is characterized in that: described expanding petal (7) upper end connects implantation body's body outer wall, and the lower end is separated with expansion die cavity (5) outer wall also can outwards expand and is opened.

5. according to claim 1 or 4 each described expansion type implantation bodys, it is characterized in that: described expanding petal (7) quantity is 2-10.

6. expansion type according to claim 1 implantation body, it is characterized in that: described implantation body bodies top (1) periphery has fine thread, and bottom (3) and expanding petal (7) periphery have coarse-pitch thread.