CN1163743A

CN1163743A - Adjustable expansion-fixed artificial tooth root

Info

Publication number: CN1163743A
Application number: CN 96105616
Authority: CN
Inventors: 李大卫; 郑强
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-04-27
Filing date: 1996-04-27
Publication date: 1997-11-05

Abstract

An adjustable artificial tooth root fixed by expansion is composed of external tube and internal axle, which are engaged by spiral thread. Said internal axle has regular top hexaprism extended from external tube and conic bottom disk with same top diameter as that of internal axle. Said external tube has a lower segment with 4 equidistributed longitudinal openings. Turning internal axle, the external tube can be expanded to fix it in bone mechanically with high firmness, greatly shortening the planting period. If it is loosened, turning the internal axle, the problem can be resolved.

Description

A kind of adjustable expansion-fixed artificial tooth root

The invention belongs to a kind of medical supplies, be specifically related to the root of the tooth that a kind of artificial growth tooth is used.

In known technology, the root of the tooth that the artificial growth tooth is used, mostly being with the pure titanium of metal is material, make cylindric or lamellar, plant this class root of the tooth, mainly contain two kinds of shortcomings, one is that crop cycle is long, generally want half a year, just can make itself and human body sclerotin that biological the combination and the combination of mechanical lock knot property taken place; Second shortcoming is, plantation mortality height, reason are that some artificial tooth root is excessive or produce inflammation and can cause forming the space between root of the tooth and the sclerotin gradually to the sclerotin pressure around it, make root of the tooth lose the support and the keying action of sclerotin, thereby make root of the tooth that loosening, sinking take place, come off at last.

Purpose task of the present invention is for overcoming a kind of novel artificial root of the tooth that above two kinds of shortcomings design.

Realize that concrete measure of the present invention is: it still adopts the pure titanium of metal to make, and is made up of outer tube and interior axle two parts, and its outer pipe internal surface is provided with tapping thread, is hexagon for one section by upper port, and the hypomere of outer tube vertically has 3-5 otch with isometric and five equilibrium; Axle is loaded in the outer tube in it, its diameter is identical with outer tube diameter, and the surface is provided with and the intermeshing screw thread of outer tube energy, being provided with it interior upper end is positive six prisms of one, this six prismatical termination is exposed outer tube, the lower end of interior axle is provided with it and is the frustum of a cone chassis of one, and the upper base diameter on chassis is identical with interior shaft diameter.

For further strengthening maintenance and the support function behind this tooth root planting, can add screw thread or groove at the outer surface of outer tube.

Describe embodiment of the invention structure in detail below in conjunction with accompanying drawing:

Fig. 1 is the outer tube structure sketch map of adjustable expansion-fixed artificial tooth root.

Fig. 2 is the interior axle construction sketch map of adjustable expansion-fixed artificial tooth root.

Fig. 3 implants deployed condition sketch map behind the sclerotin for Fig. 1.

Among the figure, 1 is outer tube, interior axle is loaded in the outer tube 1,3 open otch vertical, isometric, five equilibrium for the outer tube hypomere, have four, 4 is the screw thread on the outer tube outer surface, in order to maintenance and the support function behind the enhancing tooth root planting, the inner surface of outer tube is provided with tapping thread, is positive hexagon for one section by upper port; Interior shaft diameter is identical with outer tube diameter, its surface is provided with and the intermeshing screw thread 6 of outer tube energy, 2 is positive six prisms of interior axle upper end, 5 is the frustum of a cone chassis of bottom, they and interior axle are in one, the upper base diameter on chassis is identical with interior shaft diameter, and the termination of six prisms 2 is exposed to outside the outer tube 1.

Using method of the present invention and excellent characteristics thereof are: in packing interior axle into the back implantable bone from the bottom of outer tube, block interior axle upper end with spanner, rotate up, interior axle progressively rises, its chassis is with several otch spallings of outer tube lower end and outwards expansion, with plant the dentale hole wall and closely contact, in snapping in bone, formation mechanical lock knot produces powerful mechanical fixing and holding power, stops root of the tooth to sink and swing, the quick maintenance of root of the tooth, and can fully resist external force, generally, so just shortened the cycle of artificial growth tooth greatly within it having a denture made on the axle after the week; If add screw thread or groove on the outer tube outer wall, can further strengthen the maintenance and the support effect of outer tube.If this root of the tooth is after plantation several years, owing to bone absorption is become flexible, interior axle can be rotated up raising again, spalling outer tube lower end can be continued in its chassis, it is enlarged once more towards periphery closely contacts with sclerotin, form mechanical lock knot once more, produce new maintenance and supporting strength, eliminated artificial tooth's loose compact and sinking in the known technology and the drawback that can not repair.

Claims

1, a kind of adjustable expansion-fixed artificial tooth root adopts the pure titanium of metal to make, the invention is characterized in that it is made up of outer tube and interior axle two parts, the inner surface of its outer tube is provided with tapping thread, is positive hexagon for one section by upper port, and the hypomere of outer tube vertically has 3-5 otch with isometric and five equilibrium; Axle is loaded in the outer tube in it, its diameter is identical with outer tube diameter, and the surface is provided with and the intermeshing screw thread of outer tube energy, being provided with it interior upper end is positive six prisms of one, this six prismatical termination is exposed outer tube, the lower end of interior axle is provided with it and is the frustum of a cone chassis of one, and the upper base diameter on chassis is identical with interior shaft diameter.

2, ask 1 described artificial tooth root according to right, it is characterized in that the outer surface of above-mentioned outer tube is provided with screw thread or groove.